Liebert® DS™ Thermal Management Unit
System Design Manual - 28-105kW (8-30 Tons), Downflow/Upflow, 60Hz
Floor Mounted, Air-Cooled, Water/Glycol-Cooled, GLYCOOL™ Economizer Coil, Dual-Cool DX with
Secondary Chilled Water Coil
TABLE OF CONTENTS
LIEBERT DS MODEL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.0
LIEBERT DS CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.1
Cooling Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2
Blower Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3
Component Location Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.0
LIEBERT DS AIR-COOLED SYSTEM DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.0
LIEBERT DS WATER-COOLED SYSTEM DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.0
LIEBERT DS GLYCOL-COOLED SYSTEM DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.0
LIEBERT DS GLYCOOL™ SYSTEM DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.0
ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1
Air-cooled Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2
Water/Glycol-Cooled Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.0
WEIGHTS AND DIMENSIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1
Downflow Model Dimensions and Primary Connections—Water/Glycol/GLYCOOL™
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.2
Downflow Models with Front and/or Rear Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.3
Disassembly Dimensions—Downflow Air-Cooled Systems . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.4
Disassembly Dimensions—Downflow, Water/Glycol/GLYCOOL™ Systems . . . . . . . . . . . . 52
7.5
Upflow Model Dimensions and Primary Connections—Air-Cooled Systems with EC
Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.6
Upflow Model Dimensions and Primary Connections—Water/Glycol/GLYCOOL™
Cooled Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.7
Upflow Model Dimensions and Primary Connections—Air-Cooled Systems with
Forward-Curved Blowers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7.8
Upflow Model Dimensions and Primary Connections—Water/Glycol/GLYCOOL™
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.0
BLOWER OUTLET AND DECK DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
8.1
Disassembly Dimensions—Upflow Air-Cooled Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
8.2
Disassembly Dimensions—Upflow, Water/Glycol/GLYCOOL™ Systems . . . . . . . . . . . . . . . 96
9.0
ANCILLARY ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9.1
Floor Stands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9.2
Plenums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
9.3
Rear Return Filter Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
10.0
PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
10.1
Piping Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
10.1.1 Typical System Configurations—Liebert MC™ Condensers . . . . . . . . . . . . . . . . . . . . . . . . . 109
10.1.2 Typical System Configurations—Fin/Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
11.0
ELECTRICAL FIELD CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
11.1
Standard Electrical Field Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
11.2
Optional Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
i
11.3
Optional Low-Voltage Terminal Package Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
12.0
HEAT REJECTION—LIEBERT MC™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
12.1
Liebert MC Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
12.2
Liebert MC™Dry Weight and Additional Weight of Options . . . . . . . . . . . . . . . . . . . . . . . . 124
12.3
Sound Power Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
12.4
Electrical Data—Liebert MC™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
12.5
Liebert MC™ Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
12.6
Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
12.7
Electrical Field Connections—Liebert MC™. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
13.0
HEAT REJECTION—LIEBERT FIN/TUBE CONDENSERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
13.1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
13.2
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
13.2.1 Electrical Data—Fin/Tube Condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
13.2.2 Electrical Field Connections—Liebert Fin/Tube Condensers . . . . . . . . . . . . . . . . . . . . . . . . 137
13.3
Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
14.0
HEAT REJECTION—LIEBERT PIGGYBACK CONDENSERS, AIR-COOLED. . . . . . . . . . . . . . . 142
14.1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
14.2
Electrical Field Connections—Liebert Piggyback Condensers . . . . . . . . . . . . . . . . . . . . . . 145
14.3
Connection Locations—Liebert Piggyback Condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
15.0
HEAT REJECTION—LIEBERT FIN/TUBE DRYCOOLERS AND PUMPS . . . . . . . . . . . . . . . . . . 147
15.1
Drycooler Selection—Prop Fan Drycoolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
15.2
Liebert Drycooler Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
15.3
Dimensional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
15.4
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
15.3.1 Dimensions—Prop Fan Drycoolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
15.4.1 Electrical Data—Prop Fan Drycoolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
15.5
Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
16.0
HEAT REJECTION—PIGGYBACK DRYCOOLERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
16.1
Drycooler Selection—Indoor Piggyback Drycoolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
16.2
Electrical Data—Piggyback Drycoolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
16.3
Dimensions—Indoor Piggyback Drycoolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
16.4
Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
17.0
PUMP PACKAGES AND EXPANSION TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
APPENDIX A - U.S. DEPARTMENT OF ENERGY (DOE) PERFORMANCE DATA . . . . . . . . . . . . . . . . 164
APPENDIX B - GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
ii
Liebert DS Model Number
LIEBERT DS MODEL NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
D
S
0
3
5
A
U
A
0
E
I
*
*
*
*
Air Distribution
DS = Downflow Standard
VS = Upflow Standard
Factory
Configuration
Number
Nominal kW
028, 035, 042, 053, 070, 077, 105
(8, 10, 12, 15, 20, 22, 30 tons)
Humidification
0 - None
I - Infrared
S - Steam Generating
Canister
Cooling Type
A = Air-Cooled
D = Dual-Cool, Air-Cooled
H = Dual-Cool, Water-Cooled
K = GLYCOOL (Liebert Economizer Coil)
W = Water/Glycol
Compressor
D - Digital Scroll, R-407C
S - Scroll, R-407C
U - Semi-Hermetic with Four-Step, R-407C
V- Semi-Hermetic with Four-Step, R407C
(DS105 water/glycol/GLYCOOL only)
Reheat Type
0 - None
E - 3-Stage Electric
S - SCR
Voltage
A - 460/3/60
B - 575/3/60
C - 208/3/60
D - 230/3/60
2 - 380/3/60
Fan Type
0 = Forward-Curved
Blowers
1 = Electronically
Commutated (EC)
Fans
Not all combinations of options are available on all units.
Digital Scroll Compressors
• Not available on 077 and 105
• Not compatible with SCR reheat because digital scroll provides variable capacity control
Scroll Compressors
• Not available on 077 and 105 water/glycol/GLYCOOL models after 12/31/15
EC Fans, Direct-Drive
• Liebert Econ-O-Coil™ not available on 028, 035, 042 models with 208/230V
Steam Generating Canister Humidifier
• Not available on upflow (VS) configurations
• Not available on EC fan configurations
575 Volt Option Limitations
• Digital scroll compressors available only on 053, 070 models
GLYCOOL Liebert Economizer Models
• 105 model requires semi-hermetic compressors only, so as to prevent potential coil freezing
Turning Vanes
• Not available on floor stands 6" (152.4mm) tall
• Not available or required on units with EC fans
High Pressure Water Regulating Valve
• Not available on 042 models with semi-hermetic and scroll compressors
1
Liebert® DS™
Liebert DS Configurations
1.0
LIEBERT DS CONFIGURATIONS
1.1
Cooling Configurations
NOTE
All field-installed piping must comply with applicable local, state and federal codes.
AIR-COOLED
Air-cooled unit piping is spun closed from the
actory and contains a nitrogen holding charge.
ach installation requires field-supplied
efrigerant and piping to a condenser.
GLYCOL-COOLED
Glycol-cooled units are factory-charged and
tested. Field-supplied and field-installed piping is
required from the unit to the drycooler and pump
package.
GLYCOOL-INTEGRATED FLUID ECONOMIZER
YCOOL units are factory-charged and tested. Field-supplied
d field-installed piping is required from the unit to the
ycooler and pump package. An additional Liebert Economizer
l is included for use when fluid temperatures are sufficiently
w (below room temperature). Economizer cooling is provided
circulating cold glycol through this second coil, reducing or
minating compressor operation.
WATER-COOLED
Water-cooled units are factory-charged and
tested. Field-supplied and field-installed
water piping is required from the unit to the
cooling tower.
DUAL-COOL
This system has all of the features of a compressorized
system, but adds a second cooling coil that is connected
to a source of chilled water. Cooling is provided by
circulating chilled water, when available, through this
second coil and reducing compressor operation.
Liebert® DS™
2
Liebert DS Configurations
1.2
Blower Configurations
Figure 1
Blower configurations—Downflow, front and rear supply models, EC fans
Return Air
Return Air
Filter
Filter
Front
Front
Coil
Coil
Supply
Air
Blower
Blower
Raised
Floor
Raised
Floor
Rear Supply, EC Fans
Applicable to installations
without raised floors
Front Supply, EC Fans
Applicable to installations
without raised floors
Figure 2
Supply
Air
Blower configurations—Downflow, bottom supply and under-floor supply models, EC fans
Return Air
Return Air
Filter
Filter
Front
Front
Coil
Coil
Blower
Blower
Raised
Floor
Raised
Floor
Supply Air
Floor
Stand
(optional)
Supply
Air
Floor Stand
(optional )
Supply
Air
Under-Floor Supply, EC Fans
(requires 24" minimum height)
Bottom Supply, EC Fans
3
Liebert® DS™
Liebert DS Configurations
Figure 3
Blower configurations—Upflow models, EC fans in plenum
Supply
Air
Supply
Air
Supply
Air
Supply
Air
EC Fan
Front
Coil
EC Fan
Front
Coil
Filter
Filter
Return Air
Return
Air
Ductwork
Upflow, Front Return, EC Fan in Plenum
Figure 4
Upflow, Rear Return, Ducted, EC Fan in Plenum
Blower configurations—Upflow, front return models, forward-curved blowers
Supply Air
Supply Air
Front
Blower
Front
Coil
Coil
Filter
Filter
Return
Air
Return
Air
Top Supply, Front Throw Forward-Curved Blowers
Liebert® DS™
Blower
Top Supply, Rear Throw Forward-Curved Blowers
4
Liebert DS Configurations
Figure 5
Blower configurations—Upflow, rear return models, forward-curved blowers
Supply Air
Front
Supply Air
Blower
Front
Coil
Blower
Coil
Filter
Filter
Return
Air
Return
Air
Ductwork
Top Supply, Front Throw, Forward-Curved Blowers
Ductwork
Top Supply, Rear Throw, Forward-Curved Blowers
5
Liebert® DS™
Liebert DS Configurations
1.3
Component Location Drawings
Figure 6
Downflow model component locations
1
2
17
16
15
3
14
4
13
5
12
11
10
9
8
7
6
1. Condenser Cleanout Plugs,
fluid-cooled units only
2. Filters
3. Liebert iCOM
4. Smoke Sensor, optional
5. Fan Pulley
6. Motor
7. Motor Sheave and Belts
8. Blower
9. Condensate Pump, optional
Liebert® DS™
18
10. Infrared Humidifier, optional
11. Econ-O-Coil Valve, GLYCOOL/Dual Cooling
12. Evaporator Coil
13. Condenser Drain Plugs, fluid-cooled units only
14. Compressor Section
15. Electric Box
16. Disconnect, optional
17. Variable Frequency Drive (optional on
digital scroll units only)
18. EC Fans, optional
6
18
DPN000958
Rev. 4
Liebert DS Configurations
Figure 7
Upflow model component locations
18
1
2
17
4
5
16
6
15
7
8
14
13
9
12
1. Condenser Cleanout Plugs
(fluid-cooled units only)
2. Blower
3. Filters - not shown for clarity
4. Fan Pulley
5. Motor Sheave and Belts
6. Liebert iCom Control Display
7. Motor
8. Evaporator Coil
9. Variable Frequency Drive (optional on
digital scroll units only)
10
11
10. Smoke Sensor (optional)
11. Infrared Humidifier (optional)
12. Condensate Pump (optional)
13. Econ-O-Coil Valve (GLYCOOL/Dual Cooling)
14. Condenser Drain Plugs ( fluid-cooled units only)
15. Electric Box
16. Compressor Section
17. Disconnect (optional)
18. EC Fans (optional)
DPN001222
Rev. 2
7
Liebert® DS™
Liebert DS Air-Cooled System Data
2.0
Table 1
LIEBERT DS AIR-COOLED SYSTEM DATA
Application data—Air-cooled, EC fan, under-floor discharge
Model Size
028
035
042
053
1
070
077
105
APPLICATION DATA with EC Fans
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Semi Hermetic Compressors (4 Step Cooling) with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
Sensible kBTUH (kW)
116.4
(34.1)
143.6
(42.1)
163.6
(47.9)
210.6
(61.7)
247.1
(72.4)
270.3
(79.2)
352.5
(103.3)
116
(34)
141.2
(41.4)
160.9
(47.9)
210.2
(61.6)
245.9
(72)
269.2
(78.9)
337.5
(98.9)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
110.5
(32.4)
136.8
(40.1)
156.1
(45.7)
198.9
(58.3)
234.8
(68.8)
257.1
(75.3)
338.2
(99.1)
Sensible kBTUH (kW)
105.9
(31)
128.1
(37.5)
146.2
(45.7)
193.9
(56.8)
226.6
(66.4)
248.8
(72.9)
307.2
(90)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
105.3
(30.9)
130.8
(38.3)
149.5
(43.8)
189
(55.4)
223.9
(65.6)
245.8
(72)
325
(95.2)
Sensible kBTUH (kW)
93.9
(27.5)
113.8
(33.3)
129.9
(43.8)
173.3
(50.8)
201.3
(59)
221.5
(64.9)
80
(273.1)
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
Scroll or Digital Scroll Compressors with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
120.8
(35.4)
137.1
(40.2)
155.3
(45.5)
216.8
(63.5)
258.6
(75.8)
277.6 (81.3)
353.7 (103.6)
Sensible kBTUH (kW)
120
(35.2)
136.4
(40)
154.7
(45.3)
215.7
(63.2)
255.6
(74.9)
275.1 (80.6)
338.3 (99.1)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
113.9
(33.4)
130.4
(38.2)
148.1
(43.4)
206.5
(60.5)
248
(72.7)
265.8 (77.9)
340.2 (99.7)
Sensible kBTUH (kW)
108.7
(31.8)
124.6
(36.5)
141.9
(41.6)
199.1
(58.3)
235
(68.9)
253 (74.1)
308.2 (90.3)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
107.8
(31.6)
124.7
(36.5)
141.9
(41.6)
197.4
(57.8)
69.9
(238.4)
255.5 (74.9)
327.8 (96)
Sensible kBTUH (kW)
96.1
(28.2)
110.8
(32.5)
126.3
(37)
177.6
(52)
209.4
(61.4)
224.9 (65.9)
274.3 (80.4)
6200
8,000
9,600
(10533.9) (13,592) (16,310)
11,000
(18,689)
13,700
(23,276)
3.75 (2.8) 3.75 (2.8) 3.4 (2.5) 5.4 (4.0)
7.9 (5.9)
10.5 (7.8)
2
3
FAN SECTION - Downflow Models - EC Models Under Floor
3
Standard Air Volume - f /m (m3/h)
0.2" external static
Standard Fan Motor hp (kW)
Number of Fans
1.
2.
3.
4.
4,400
(7,476)
3.75 (2.8)
1
5,200
(8,835)
1
1
2
2
Refer to Appendix A for U.S. Department of Energy Performance Data.
Application data is rated and factory-certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only.
Liebert® DS™
8
Liebert DS Air-Cooled System Data
Application data—Air-cooled with forward-curved blowers 1
Table 2
028
Model Size
035
042
053
070
077
105
APPLICATION DATA with Forward-Curved Blowers
Net APPLICATION DATA BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Semi Hermetic Compressors (4 Step Cooling) with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
137.6
(40.3)
140.0
(41.0)
157.6
(46.2)
205.3
(60.2)
240.6
(70.5)
262.6
(76.9)
345.6
(101.3)
Sensible kBTUH (kW)
129.6
(38.0)
137.6
(40.3)
155.3
(45.5)
203.8
(59.7)
237.9
(69.7)
259.9
(76.2)
329.6
(96.6)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
131.8
(38.6)
133.3
(39.1)
150
(43.9)
195.1
(57.2)
229.3
(67.2)
250.6
(73.4)
331.5
(97.1)
Sensible kBTUH (kW)
117.2
(34.3)
124.6
(36.5)
140.5
(41.2)
187.1
(54.8)
217.7
(63.8)
238.2
(69.8)
299.4
(87.7)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
126.5
(37.1)
127.2
(37.3)
143.3
(42)
185.6
(54.4)
218.9
(64.1)
239.7
(70.2)
318.4
(93.3)
Sensible kBTUH (kW)
104.2
(30.5)
110.3
(32.3)
124.2
(36.4)
166.2
(48.7)
192.9
(56.5)
210.9
(61.8)
265.4
(77.8)
Net APPLICATION DATA BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
Scroll or Digital Scroll Compressors with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
116.4
(34.1)
135.5
(39.7)
149.2
(43.7)
212.1
(62.1)
252.6
(74.0)
270.1 (79.1)
346.9 (101.6)
Sensible kBTUH (kW)
136.9
(40.1)
116.0
(34.0)
148.9
(43.6)
209.3
(61.3)
246.6
(72.3)
265.6 (77.8)
330.4 (96.8)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
110.5
(32.4)
130.8
(38.3)
141.9
(41.6)
202.5
(59.3)
243
(71.2)
259 (75.9)
333.5 (97.7)
Sensible kBTUH (kW)
105.9
(31.0)
123.2
(36.1)
136.1
(39.9)
191.6
(56.1)
225
(65.9)
242.6 (71.1)
300.4 (88.0)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
105.3
(30.9)
125.4
(36.7)
135.7
(39.8)
194.2
(56.9)
233.9
(68.5)
249.3 (73)
321.1 (94.1)
Sensible kBTUH (kW)
93.9
(27.5)
109.4
(32.1)
120.6
(35.3)
170.4
(49.9)
200.1
(58.6)
215.2 (63.1)
266.6 (78.1)
FAN SECTION - Downflow Models - Fixed Pitch, Two Belts
3
Standard Air Volume - f /m (m3/h)
0.2" external static
4,400
(7,476)
5,200
(8,835)
6,300
(10,704)
7,500
(12,743)
9,000
(15,291)
10,400
(17,670)
13,700
(23,276)
Standard Fan Motor hp (kW)
2 (1.5)
3 (2.2)
5 (3.7)
3 (2.2)
5 (3.7)
7.5 (5.6)
10 (7.5)
Optional Fan Motor hp (kW)
3 (2.2)
5 (3.7)
7.5 (5.6)
5 (3.7)
7.5 (5.6)
10 (7.5)
15 (11.2)
1
1
1
2
2
2
3
Number of Fans
1.
2.
3.
4.
Refer to Appendix A for U.S. Department of Energy Performance Data.
Application data is rated and factory-certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only.
9
Liebert® DS™
Liebert DS Air-Cooled System Data
Table 3
Physical data—Air-cooled systems
Model Size
028
035
042
053
070
077
105
EVAPORATOR COIL- A-Frame - Copper Tube/Aluminum Fin
Face Area, sq. ft. (m2) 17.1 (1.6)
Rows of Coil
3
17.1 (1.6)
17.1 (1.6)
24.7 (2.3)
24.7 (2.3)
24.7 (2.3)
32.3 (3.0)
3
3
3
3
3
3
85.3 (25.0)
102.4
(30.0)
REHEAT SECTION
Electric Reheat - Three-Stage, Stainless Steel Fin Tubular; capacity does not include fan motor heat
Capacity - kBTUH (kW) - Standard
51.2 (15.0) 51.2 (15.0) 51.2 (15.0) 85.3 (25.0) 85.3 (25.0)
Selection
Capacity, kBTUH (kW) - Optional
34.1 (10.0) 34.1 (10.0) 34.1 (10.0) 51.2 (15.0) 51.2 (15.0)
Selection
Electric Reheat - SCR Control, Stainless Steel Fin Tubular (optional selection)
Capacity, kBTUH (kW)
51.2
(15.0)
51.2
(15.0)
51.2
(15.0)
85.3
(25.0)
85.3
(25.0)
51.2 (15.0) 68.3 (20.0)
85.3
(25.0)
102.4
(30.0)
HUMIDIFIER SECTION
Infrared Humidifier (Steam canister humidifiers available on downflow models)
Capacity, lb./hr. (kg/h) 11.0 (5.0)
11.0 (5.0)
11.0 (5.0)
22.0 (10.0) 22.0 (10.0)
22.0 (10.0) 22.0 (10.0)
FILTER SECTION
Disposable Type - Nominal Sizes and Quantities, Standard MERV 8 or Optional MERV 11 (Filter types cannot be mixed, must
be all MERV 8 or all MERV 11.)
Downflow Models
Quantity
3
3
3
4
4
2 @ 25x20 2 @ 25x20 2 @ 25x20
Nominal Size, inches
4 @ 25x20 4 @ 25x20
1 @ 25x16 1 @ 25x16 1 @ 25x16
4
4
4 @ 25x20 4 @ 25x20
Upflow Models
(Front and Rear return) Filters located in separate filter box on rear return; located on lower unit panel on front return
Quantity
4
4
4
6
6
6
Nominal Size, inches
25x20
25x20
25x20
25x20
25x20
25x20
PIPING CONNECTION SIZES - Air-cooled Liebert DS Indoor Unit (Not External Line Sizes)
8
25x20
Liquid Line, O.D. Cu (2/unit)
1/2
1/2
1/2
5/8
5/8
5/8
5/8
Hot Gas Line, O.D. Cu (2/unit)
5/8
5/8
5/8
7/8
7/8
7/8
1-1/8
Infrared Humidifier, O.D. Cu
1/4
1/4
1/4
1/4
1/4
1/4
1/4
Condensate Drain, FPT
3/4
3/4
3/4
3/4
3/4
3/4
3/4
Condensate Drain w/Optional
1/2
1/2
1/2
1/2
1/2
1/2
Condensate Pump, OD
OUTDOOR AIR-COOLED CONDENSER, STANDARD 95°F AMBIENT SELECTION
See Tables 23 and 33 for other selections
1/2
Model (R-407C refrigerant) MCM056_8 MCM056_8 MCM056_8 MCM056_8 MCM080_8 MCM080_8 MCL110_8
Number of Fans
2
2
2
2
2
2
2
DUAL-COOL UNITS DATA, Water (0% Glycol), Net Application Data kBTUH (kW)
CAUTION: CuNi coil option must be specified when Econ-O-Coil is applied to open water tower.
75°F DB, 61.1 WB (23.9°C DB, 16.2°C WB) 45% RH, 45°F EWT, 55°F LWT Based on Forward-Curved Blowers
Total Capacity, kBTUH (kW)
89.2
(26.2)
101.6
(29.8)
109.8
(32.2)
170.4
(49.9)
188.8
(55.3)
196.8
(57.7)
258.8
(75.8)
Sensible Capacity, kBTUH (kW)
85 (24.9)
98.2 (28.8) 107.8 (31.6) 157.1 (46) 176.4 (51.7) 185.4 (54.3) 249.1 (73)
Flow Rate GPM (I/m) @ 10°F Rise
19 (71.9)
22.4 (84.8) 25.5 (96.5)
Pressure Drop, ft. (kPa), valve, coil 6.1 (18.23) 8.3 (24.81)
36.4 (138)
41.7 (158)
10.50
(31.39)
10.40
(31.09)
13.3 (39.8)
46 (174)
59.4 (225)
15.9 (47.6) 15.9 (47.5)
Airflow, f3/m (m3/h)
4400
(7475)
5500
6600
(9344)
(11213)
Fluid Volumes
8000
(13592)
9600
(16310)
11000
(18689)
13,700
(23,256)
Econ-O-Coil Fluid Volume, gal (l)
5 (19.0)
5 (19.0)
8 (30.4)
8 (30.4)
8 (30.4)
10 (38.0)
5 (19.0)
Application data is rated per ASHRAE 127-2012 with a 5% tolerance
Liebert® DS™
10
Liebert DS Water-Cooled System Data
3.0
LIEBERT DS WATER-COOLED SYSTEM DATA
Table 4
Application data—Water-cooled, EC fans
Model Size
28
1
35
42
053
070
077
105U
105V
APPLICATION DATA WITH EC FANS
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Semi Hermetic Compressors (Four-Step Cooling) with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
143.8
(42.1)
132
(38.7)
171
50.1)
220
(65.1)
268.3
(78.6)
297.1
(87.1)
382.3
(112.1)
356.1
(104.3)
Sensible kBTUH (kW)
135
(39.6)
108.2
(31.7)
166.9
(48.9)
212.9
(63.4)
258.2
(75.7)
285.4
(83.6)
354.6
(103.9)
345.8
(101.3)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
138.1
(40.5)
135.4
(39.7)
163.4
(47.9)
212.1
(62.2)
256.9
(75.3)
284.7
(83.4)
367.7
(107.8)
339.7
(99.5)
Sensible kBTUH (kW)
122.4
(35.9)
117.3
(34.4)
151.4
(44.4)
197.7
(58)
68.9
(235)
76
(259.5)
94.3
(321.9)
93.2
(318.2)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
Sensible kBTUH (kW)
38.9
(132.7)
41.4
(141.4)
45.9
(156.7)
59.4
(202.6)
245.8
(72)
273
(80)
352.9
(103.4)
327.8
(96.0)
109.3
(32)
131.9
(38.7)
134.7
(39.5)
176.4
(51.7)
209
(61.2)
230.8
(67.6)
285.7
(83.7)
283.7
(83.1)
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
(not available after 12/31/15)
Scroll or Digital Scroll Compressors with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
120
(35.2)
143.3
(42)
162.1
(47.5)
224.1
(66.3)
275.6
(80.8)
301.9
(88.5)
379.9
(111.3)
—
Sensible kBTUH (kW)
119.9
(35.1)
142.1
(41.6)
161
(47.2)
215.6
(64.3)
262.6
(77)
288.3
(84.5)
353.4
(103.6)
—
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
116.1
(34)
136.7
(40.1)
154.8
(45.4)
216.1
(63.3)
264.6
(77.5)
290.2
(85)
365.9
(107.2)
—
Sensible kBTUH (kW)
111
(32.5)
129.4
(37.9)
147
(43.1)
200.1
(58.6)
238.9
(70)
262.3
(76.9)
321.1
(94.1)
—
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
111.8
(32.8)
131
(38.4)
148.4
(43.5)
206.5
(60.5)
253.5
(74.3)
279.1
(81.8)
352.2
(103.2)
—
Sensible kBTUH (kW)
99.2
(29.1)
115.2
(33.8)
130.9
(38.4)
178.3
(52.2)
212.7
(62.3)
233.6
(68.5)
285.9
(83.8)
—
FAN SECTION - Downflow Models - EC Fans Under Floor
Standard Air Volume f3/m (m3/h) 4,400
0.2" External Static (7,476)
Standard Fan Motor, Nominal kW (hp)
(Total for All Fans)
Number of Fans
1.
2.
3.
4.
5.
5,200
(8,835)
6200
(10534)
8,000
(13,592)
9,600
(16,310)
11,000
(18,689)
13700
(23276)
13700
(23276)
3.75
(2.8)
3.75
(2.8)
3.75
(2.8)
3.4
(2.5)
5.4
(4.0)
7.9
(5.9)
10.5
(7.8)
10.5
(7.8)
1
1
1
2
2
2
3
3
Refer to Appendix A for U.S. Department of Energy Performance Data.
Canister humidifier not available with EC fans.
Application data is rated and factory certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only
11
Liebert® DS™
Liebert DS Water-Cooled System Data
Table 5
Application data—Water-cooled units with forward-curved blowers
Model Size
28
35
42
053
070
1
077
105U
105V
APPLICATION DATA WITH FORWARD-CURVED BLOWERS
Net Application Data, BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Semi-Hermetic Compressors (Four-Step Cooling) with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
141.6
(41.5)
144.7
(42.4)
165.2
(48.4)
211.9
(62.1)
262.5
(76.9)
289.9
(85.0)
376.4
(110.3)
348.9
(102.2)
Sensible kBTUH (kW)
132.8
(38.9)
141.9
(41.6)
161.7
(47.4)
194.6
(57)
248.4
(72.8)
274.4
(80.4)
348.7
(102.2)
338.8
(99.3)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
135.9
(39.8)
137.9
(40.4)
157.4
(46.1)
205.2
(59.7)
251.6
(73.7)
278.1
(81.5)
361.8
(106)
332.8
(97.5)
Sensible kBTUH (kW)
120.2
(35.2)
128.3
(37.6)
146.1
(42.8)
180.6
(51.9)
225.5
(66.1)
248.8
(72.9)
315.9
(92.6)
311.7
(91.3)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
130.5
(38.3)
131.9
(38.6)
150.7
(44.2)
196.9
(57.2)
240.8
(70.6)
266.7
(78.2)
346.9
(101.7)
321.1
(94.1)
Sensible kBTUH (kW)
107.1
(31.4)
113.8
(33.3)
129.3
(37.9)
162.1
(46.4)
200.3
(58.7)
220.8
(64.7)
279.8
(82)
277.9
(81.4)
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
(not available after 12/31/15)
Scroll or Digital Scroll Compressors with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
117.8
(34.5)
139.7
(40.9)
156.3
(45.8)
219.6
(64.9)
269.6
(79.0)
295.1
(86.5)
374
(109.6)
—
Sensible kBTUH (kW)
117.7
(34.5)
138.5
(40.6)
155.5
(45.6)
207.9
(62.0)
252.5
(74.0)
277.3
(81.3)
347.5
(101.8)
—
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
113.9
(33.4)
133.2
(39.0)
148.8
(43.6)
212.1
(62.2)
259.1
(75.9)
283.6
(83.1)
360
(105.5)
—
Sensible kBTUH (kW)
108.8
(31.9)
125.8
(36.9)
141.6
(41.5)
192.6
(56.4)
229.3
(67.2)
251.5
(73.7)
315.2
(92.4)
—
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45% RH
Total kBTUH (kW)
109.6
(32.1)
127.5
(37.4)
142.3
(41.7)
202.9
(59.5)
248.5
(72.8)
272.9
(80)
346.3
(101.5)
—
Sensible kBTUH (kW)
97
(28.4)
111.7
(32.7)
125.5
(36.8)
171.5
(50.3)
203.9
(59.8)
223.7
(65.5)
280
(82.1)
—
FAN SECTION - Downflow Models - Fixed Pitch, Two Belts
3
3
Standard Air Volume f /m (m /h) 4,400
0.2" External Static (7,476)
6200
(10534)
7,500
(12,743)
9,000
(15,291)
10,400
(17,670)
13,700
(23,276)
13,700
(23,276)
Standard Fan Motor, hp (kW)
2 (1.5)
3 (2.2)
5 (3.7)
3 (2.2)
5 (3.7)
7.5 (5.6)
10 (7.5)
10 (7.5)
Optional Fan Motor, hp (kW)
3 (2.2)
5 (3.7)
7.5 (5.6)
5 (3.7)
7.5 (5.6)
10 (7.5)
15 (11.2)
15 (11.2)
1
1
1
2
2
2
3
3
Number of Fans
1.
2.
3.
4.
5,200
(8,835)
Refer to Appendix A for U.S. Department of Energy Performance Data.
Application data is rated and factory certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only.
Liebert® DS™
12
Liebert DS Water-Cooled System Data
Table 6
Physical data—Water-cooled units
Model Size
028
035
042
053
070
077
105U
105V
EVAPORATOR COIL- A-Frame - Copper Tube/Aluminum Fin
Face Area, sq. ft. (sq. m) 17.1 (1.6)
17.1 (1.6)
17.1 (1.6)
24.7 (2.3)
24.7 (2.3)
24.7 (2.3)
32.3 (3.0)
32.3 (3.0)
Rows of Coil
3
3
3
3
3
3
3
85.3
(25.0)
102.4
(30.0)
102.4
(30.0)
20.0 (68.3)
20.0 (68.3)
102.4
(30.0)
102.4
(30.0)
22.0 (10.0)
22.0 (10.0)
3
REHEAT SECTION
Electric Reheat - Three-stage, Stainless Steel Fin Tubular, capacity does not include fan motor heat
Capacity, kBTUH (kW), Standard Selection
51.2
(15.0)
51.2
(15.0)
51.2
(15.0)
Capacity, kBTUH (kW), Optional Selection 34.1 (10.0) 34.1 (10.0) 34.1 (10.0)
85.3
(25.0)
85.3
(25.0)
15.0 (51.2) 15.0 (51.2) 15.0 (51.2)
Electric Reheat - SCR Control, Stainless Steel Fin Tubular (optional selection)
Capacity, kBTUH (kW)
51.2
(15.0)
51.2
(15.0)
51.2
(15.0)
85.3
(25.0)
85.3
(25.0)
85.3
(25.0)
HUMIDIFIER SECTION
Infrared Humidifier
Capacity, lb./hr. (kg/h) 11.0 (5.0)
11.0 (5.0)
11.0 (5.0)
22.0 (10.0) 22.0 (10.0) 22.0 (10.0)
FILTER SECTION
Disposable Type - Nominal Sizes and Quantities, Standard MERV 8 or Optional MERV 11 (Filter types cannot be mixed, must be all MERV 8 or all
MERV 11.)
Downflow Models
Quantity
3
3
3
Nominal Size, inches 2 @ 25x20 2 @ 25x20 2 @ 25x20
1 @ 25x16 1 @ 25x16 1 @ 25x16
Nominal Size, inches
25x20
25x20
25x20
4
4
4
4 @ 25x20 4 @ 25x20 4 @ 25x20
25x20
25x20
4
4
4 @ 25x20
4 @ 25x20
25x20
25x20
25x20
Upflow Models (Front and Rear Return)—Filters located in separate filter box on rear return, located on lower unit panel on front return
Quantity
4
4
4
6
6
6
8
8
WATER COOLED SYSTEM
Semi-Hermetic Compressors, based on 75°F/45% room conditions with EC Fans
Condenser Flow Requirements - Maximum design water pressure 150psi (1034kPa), 350psi (2413kPa) available as option
167.7
(49.2)
172.3
(50.5)
204.3
(59.9)
255
(74.7)
316.5
(92.7)
360.4
(105.6)
475.5
(139.3)
475.5
(139.3)
28
(105.90)
29 (109.7)
34 (128.7)
43 (162.7)
53 (200.6)
60 (227.1)
79 (299.0)
79 (299.0)
Pressure Drop, ft. of water (kPa), with valve 8.9 (26.70) 9.5 (28.4)
12.8 (38.3)
11.2 (33.5) 16.6 (49.6) 20.9 (62.5)
31.3 (93.6)
31.3 (93.6)
THR, kBTUH (kW)
83°F (28.3°C) EWT, GPM (l/m)
Standard Scroll Compressors Only
(not available after 12/31/15)
WATER COOLED SYSTEM - Digital Scroll Compressors, based on 75°F/45% room conditions
Condenser Flow Requirements - Maximum design water pressure 150psi (1034kPa), 350psi (2413kPa) available as option; with EC Fans
THR, kBTUH (kW)
141.8
(41.6)
83°F (28.3°C) EWT, GPM (l/m) 24 (90.85)
Pressure Drop, ft. of water (kPa), valve 19.7 (6.6)
169.8
(49.8)
194.5
(57)
258.5
(75.8)
325.3
(95.3)
365.6
(107.2)
459.6
(134.7)
—
55.5
(210.1)
236.6
(62.5)
295.3
(78)
—
91.4 (30.6)
—
28.5
(107.9)
32.5 (123)
44 (166)
27.5 (9.2)
35.3 (11.8)
35 (11.7)
54.1 (18.1) 67.5 (22.6)
PIPING CONNECTION SIZES -Water-Cooled Liebert DS Indoor Unit
Water Supply, O.D. Cu 1-5/8" (41) 1-5/8" (41) 2-1/8" (54)
2-1/8" (54) 2-1/8" (54) 2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
Water Return, O.D. Cu
2-1/8" (54) 2-1/8" (54) 2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
1-5/8
1-5/8" (41) 2-1/8" (54)
Infrared Humidifier, O.D. Cu
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
Condensate Drain, FPT
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
Condensate Drain w/Optional Condensate
Pump, OD
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
Hot Water Reheat, O.D. Cu
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
DUAL-COOL UNITS APPLICATION DATA, Water (0% Glycol), Net Application Data kBTUH (kW)
CAUTION: CuNi coil option must be specified when Econ-O-Coil is applied to open water tower.
75°F DB, 62.57 WB (23.9°C DB, 16.9°C WB) 45% RH, 45°F EWT, 55°F LWT; with EC Fans
Total Capacity, kBTUH (kW)
89.2
(26.2)
101.6
(29.8)
109.8
(32.2)
170.4
(49.9)
198.1
(58)
196.8
(57.7)
280.1
(82.1)
280.1
(82.1)
Sensible Capacity, kBTUH (kW)
85
(24.9)
98.2
(28.8)
107.8
(31.6)
157.1
(46)
181.4
(53.2)
185.4
(54.3)
63.7
(4)
63.7
(4)
Flow Rate, GPM (I/m) @ 10°F Rise
19
(1.2)
22.4
(1.4)
25.5
(1.6)
36.4
(2.3)
47.2
(3.0)
46.1
(2.9)
54.9
(3.5)
54.9
(3.5)
10.50
(31.39)
10.40
(31.09)
17.2
(51.41)
15.9 (47.6)
18 (53.80)
18 (53.80)
Pressure Drop, ft. (kPa), valve, coil 6.1 (18.23) 8.3 (24.81)
FLUID VOLUMES
Econ-O-Coil Fluid Volume, gal (l)
5 (19.0)
5 (19.0)
5 (19.0)
8 (30.4)
8 (30.4)
8 (30.4)
10 (38.0)
10 (38.0)
Unit Volume, Without Econ-O-Coil, gal, (l)
4 (15.2)
4 (15.2)
4 (15.2)
7 (26.6)
7 (26.6)
7 (26.6)
8 (30.4)
8 (30.4)
13
Liebert® DS™
Liebert DS Glycol-Cooled System Data
4.0
LIEBERT DS GLYCOL-COOLED SYSTEM DATA
Table 7
Application data—Glycol-cooled units with EC fans
Model Size
028
035
042
1
053
070
077
105U
105V
APPLICATION DATA with EC Fans
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor, Semi-Hermetic Compressors
(Four-Step Cooling) with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
125.3
(36.7)
130.4
(38.2)
149.9
(43.9)
194.8
(57.1)
238.9
(70)
265.7
(77.9)
346.3
(101.5)
330.9
(97.0)
Sensible kBTUH (kW)
124.4
(36.4)
130.4
(38.2)
149.9
(43.9)
193.5
(56.7)
237.7
(69.7)
263.8
(77.3)
333.4
(97.7)
329.8
(96.6)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
119.1
(34.9)
122.3
(35.8)
141
(41.3)
185.1
(54.2)
226.8
(66.5)
252.9
(74.1)
331.4
(97.1)
306.1
(89.7)
Sensible kBTUH (kW)
112.9
(33.1)
120.9
(35.4)
138.8
(40.7)
177.6
(52.1)
218.1
(63.9)
242.2
(71.0)
304
(89.1)
301.4
(88.3)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
113.6
(33.3)
115.8
(33.9)
133.8
(39.2)
176
(51.6)
215.9
(63.3)
241.5
(70.8)
317.1
(92.9)
288.5
(84.5)
Sensible kBTUH (kW)
100.3
(29.4)
107.6
(31.5)
123.6
(36.2)
158.4
(46.4)
194.5
(57.0)
215.7
(63.2)
269.6
(79.0)
267.4
(78.4)
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
(not available after 12/31/15)
Scroll or Digital Scroll Compressors with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
108.7
(31.9)
128
(37.5)
145.2
(42.5)
203.6
(59.7)
244.5
(71.6)
272.6
(79.9)
344.6
(101.0)
—
Sensible kBTUH (kW)
108.7
(31.9)
128
(37.5)
145.2
(42.5)
203
(59.5)
242.2
(71.0)
269.2
(78.9)
332.3
(97.4)
—
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
103
(30.2)
120.6
(35.3)
136.8
(40.1)
193.4
(56.7)
233.1
(68.3)
260.5
(76.3)
330.7
(96.9)
—
Sensible kBTUH (kW)
102.6
(30.1)
119.6
(35.1)
135.9
(39.8)
187
(54.8)
221.1
(65.1)
246.6
(72.3)
303.6
(89.0)
—
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45% RH
Total kBTUH (kW)
97.6
(28.6)
114.7
(33.6)
130.2
(38.2)
184.1
(54.0)
223.2
(65.4)
249.8
(73.2)
317.6
(93.1)
—
Sensible kBTUH (kW)
92
(27.0)
107.1
(31.4)
121.8
(35.7)
167.2
(49.0)
198.4
(58.1)
219.7
(64.4)
270
(79.1)
—
11,000
(18,689)
13.700
(23,276)
13.700
(23,276)
FAN SECTION - Downflow Models - EC Fans Under Floor
3
Standard Air Volume f /m (m3/h) 4,400
5,200
6200
8,000
9,600
0.2" External Static (7,476) (8,835) (10534) (13,592) (16,310)
Standard Fan Motor, Nominal hp (kW)
(total for all fans)
Number of fans
1.
2.
3.
4.
5.
3.75
(2.8)
3.75
(2.8)
3.75
(2.8)
3.4
(2.5)
5.4
(4.0)
7.9
(5.9)
10.5
(7.8)
10.5
(7.8)
1
1
1
2
2
2
3
3
Refer to Appendix A for U.S. Department of Energy Performance Data.
Application data is rated and factory certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only.
40% ethylene glycol
Liebert® DS™
14
Liebert DS Glycol-Cooled System Data
Table 8
Application data—Glycol-cooled units with forward-curved blowers 1
Model Size
028
035
042
053
070
077
105U
105V
APPLICATION DATA WITH FORWARD-CURVED BLOWERS
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor, Semi-Hermetic Compressors
Semi-Hermetic Compressors (4Step Cooling) with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
123.1
(36.1)
126.8
(37.2)
144.4
(42.3)
194.8
(57.1)
233.2
(68.3)
258.8
(75.9)
340.4
(99.8)
324.4
(95.1)
Sensible kBTUH (kW)
122.2
(35.8)
126.8
(37.2)
144.4
(42.3)
193.5
(56.7)
229.9
(67.4)
254.9
(74.7)
327.4
(96.0)
323.1
(94.7)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
116.9
(34.2)
118.8
(34.8)
135.3
(39.6)
185.1
(54.2)
221.8
(65)
246.6
(72.3)
325.5
(95.4)
300.0
(87.9)
Sensible kBTUH (kW)
110.7
(32.4)
117.3
(34.4)
133.4
(39.1)
177.6
(52.1)
209.7
(61.5)
232.5
(68.1)
298
(87.3)
295.3
(86.5)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45% RH
Total kBTUH (kW)
111.4
(32.7)
112.3
(32.9)
128
(37.5)
176
(51.6)
211.5
(62)
235.6
(69.1)
311.2)
(91.2
282.6
(82.8)
Sensible kBTUH (kW)
98.1)
(28.7)
104.1
(30.5)
118.3
(34.7)
158.4
(46.4)
186.4
(54.6)
206.2
(60.4)
263.7
(77.3)
262.2
(76.8)
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
(not available after 12/31/15)
Scroll or Digital Scroll Compressors with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
106.5
(31.2)
124.5
(36.5)
139.4
(40.8)
199.3
(58.4)
239
(70.1)
265.7
(77.9)
338.7
(99.3)
—
Sensible kBTUH (kW)
106.5
(31.2)
124.5
(36.5)
139.4
(40.8)
197.1
(57.8)
234.3
(68.7)
259.8
(76.1)
326.3
(95.6)
—
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
100.8
(29.6)
117
(34.3)
130.8
(38.3)
189.8
(55.6)
228.3
(66.9)
254.3
(74.5)
324.8
(95.2)
—
Sensible kBTUH (kW)
100.4
(29.4)
116.1
(34)
130.2
(38.1)
180.5
(52.9)
213.5
(62.6)
236.7
(69.4)
297.7
(87.2)
—
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45% RH
Total kBTUH (kW)
Sensible kBTUH (kW)
95.4
(28)
111.2
(32.6)
124
(36.4)
181.1
(53.1)
218.8
(64.1)
244
(71.5)
311.6
(91.3)
—
89.8
(26.3)
103.5
(30.3)
116.3
(34.1)
161
(47.2)
190.1
(55.7)
210.1
(61.6)
264
(77.4)
—
FAN SECTION - Downflow Models - Fixed Pitch, Two Belts
3
Standard Air Volume f /m (m3/h) 4,400
0.2" External Static (7,476)
6,300
(10,704)
7,500
(12,743)
9,000
(15,291)
10,400
(17,670)
13,700
(23,276)
13,700
(23,276)
Standard Fan Motor hp (kW)
2 (1.5)
3 (2.2)
5 (3.7)
3 (2.2)
5 (3.7)
7.5 (5.6)
10 (7.5)
10 (7.5)
Optional Fan Motor hp (kW)
3 (2.2)
5 (3.7)
7.5 (5.6)
5 (3.7)
7.5 (5.6)
10 (7.5)
15 (11.2)
15 (11.2)
1
1
1
2
2
2
3
3
Number of Fans
1.
2.
3.
4.
5.
5,200
(8,835)
Refer to Appendix A for U.S. Department of Energy Performance Data.
Application data is rated and factory certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only.
40% ethylene glycol
15
Liebert® DS™
Liebert DS Glycol-Cooled System Data
Table 9
Physical data—Glycol-cooled units
Model Size
028
035
042
053
070
077
105U
105V
EVAPORATOR COIL - A-Frame - Copper Tube/Aluminum Fin
Face Area, sq. ft. (sq. m)
Rows of Coil
17.1 (1.6)
17.1 (1.6)
3
3
17.1 (1.6)
24.7 (2.3)
24.7 (2.3)
24.7 (2.3)
32.3 (3.0)
32.3 (3.0)
3
3
3
3
3
3
REHEAT SECTION
Electric Reheat - Three-Stage, Stainless Steel Fin Tubular, Capacity Does Not Include Fan Motor Heat
Capacity, kBTUH (kW),
Standard Selection 51.2 (15.0)
51.2 (15.0)
51.2 (15.0)
85.3 (25.0)
85.3 (25.0)
85.3 (25.0)
102.4 (30.0)
102.4) (30.0
Capacity, kBTUH (kW), 34.1 (10.0)
Optional Selection
34.1 (10.0)
34.1 (10.0)
51.2 (15.0)
51.2 (15.0)
51.2 (15.0)
20.0 (68.3)
20.0 (68.3)
85.3 (25.0)
85.3 (25.0)
30.0 (102.4)
30.0 (102.4)
22.0 (10.0)
22.0 (10.0)
22.0 (10.0)
22.0 (10.0)
Electric Reheat - SCR Control, Stainless Steel Fin Tubular (Optional Selection)
Capacity, kBTUH (kW) 51.2 (15.0)
51.2 (15.0)
51.2 (15.0)
85.3 (25.0)
HUMIDIFIER SECTION
Infrared Humidifier
Capacity, lb/hr (kg/h)
11.0 (5.0)
11.0 (5.0)
11.0 (5.0)
22.0 (10.0)
FILTER SECTION - Disposable Type - Nominal Sizes and Quantities, Standard MERV 8 or Optional MERV 11
(Filter types cannot be mixed, must be all MERV 8 or all MERV 11)
Downflow Models
Quantity
3
Nominal Size, inches 2 @ 25x20
1 @ 25x16
3
3
4
4
4
4
4
2 @ 25x20
1 @ 25x16
2 @ 25x20
1 @ 25x16
4 @ 25x20
4 @ 25x20
4 @ 25x20
4 @ 25x20
4 @ 25x20
Upflow Models (Front and Rear Return)
Filters located in separate filter box on rear return, located on lower unit panel on front return
Quantity
Nominal Size, inches
4
4
4
6
6
6
8
8
25x20
25x20
25x20
25x20
25x20
25x20
25x20
25x20
OUTDOOR DRYCOOLERS - STANDARD 95°F AMBIENT SELECTION; SEE Table 49 FOR OTHER SELECTIONS
Model Number
Number of Fans
D-174
D-174
D-225
D-260
D-310
D-350
D-466
D-466
2
2
2
3
3
3
4
4
CONDENSER FLOW REQUIREMENTS—with 40% Ethylene Glycol
GLYCOL-COOLED SYSTEM -Semi-Hermetic Compressors, based on 75°F/45% room conditions with EC fans
THR, kBTUH (kW) 154.9 (45.4) 159.1 (46.6)
189 (55.4)
238.3 (69.8) 297.7 (87.2) 341.8 (100.2) 456.9 (133.9) 456.9 (133.9)
104°F (40°C) EGT, GPM
(l/m)
32
(121.1)
33.5
(135)
39
(148)
49
(185)
62
(234.7)
70
(265)
96
(363)
96
(363)
Pressure Drop, ft. of water
(kPa),
12.9
(38.5)
14
(41.9)
18.6
(55.7)
16
(47.7)
25
(74.7)
31.3
(93.6)
50.6
(151.3)
50.6
(151.3)
GLYCOL-COOLED SYSTEM - Digital Scroll Compressors, based on 75°F/45% room
conditions with EC Fans
THR, kBTUH (kW) 134.5 (39.4) 162.4 (47.6) 186.8 (54.7)
104°F (40°C) EGT, GPM
(l/m)
28 (106)
Pressure Drop, ft. of water 10.0 (29.8)
(kPa)
248 (72.7)
Standard Scroll Compressors
with EC Fans
(not available after 12/31/15)
311.1 (91.2) 353.7 (103.7) 440.1 (129)
—
33.5 (127)
39 (148)
52 (163.5)
64 (242)
73.5 (278)
91.5 (264.9)
—
14.0 (41.9)
18.6 (55.6)
17.9 (53.5)
26.6 (79.5)
34.4 (102.8)
46.2 (138.1)
—
PIPING CONNECTION SIZES - Glycol-Cooled Liebert DS Indoor Unit
Glycol Supply, O.D. Cu 1-5/8" (41)
1-5/8" (41)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
Glycol Return, O.D. Cu 1-5/8" (41)
1-5/8" (41)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
Infrared Humidifier, O.D. Cu
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
Condensate Drain, FPT
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
Condensate Drain w/Optional
Condensate Pump, OD
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
Hot Water Reheat, O.D. Cu
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
Liebert® DS™
16
Liebert DS GLYCOOL™ System Data
5.0
LIEBERT DS GLYCOOL
Table 10
™
SYSTEM DATA
Application data—GLYCOOL units with EC fans 1
Model Size
028
035
042
053
070
077
105U
105V
APPLICATION DATA with EC Fans
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor, Semi-Hermetic Compressors
(Four-Step Cooling) with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
124.6
(36.5)
129.3
(37.9)
148.4
(43.5)
197.9
(58.0)
236.3
(69.3)
263.7
(77.3)
342.6
(100.4)
327.4
(95.9)
Sensible kBTUH (kW)
123.7
(36.3)
129.3
(37.9)
148.4
(43.5)
197.8
(58.0)
235.1
(68.9)
259.7
(76.1)
328.7
(96.3)
325.1
(95.2)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
118.4
(34.7)
121.2
(35.5)
139.5
(40.9)
187.4
(54.9)
224.2
(65.7)
251.5
(73.7)
327.8
(96.1)
302.7
(88.7)
Sensible kBTUH (kW)
112.3
(32.9)
119.8
(35.1)
137.2
(40.2)
182.3
(53.4)
215.5
(63.2)
237.2
(69.5)
299.1
(87.7)
296.8
(87)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45.1% RH
Total kBTUH (kW)
112.9
(33.1)
114.7
(33.6)
132.3
(38.8)
177.7
(52.1)
213.3
(62.5)
240.5
(70.5)
313.7
(91.9)
285.3
(83.6)
Sensible kBTUH (kW)
99.6
(29.2)
106.6
(31.2)
122
(35.8)
163
(47.8)
192
(56.3)
210.9
(61.8)
265.1
(77.7)
263.5
(77.2)
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
(not available after 12/31/15)
Scroll or Digital Scroll compressors with EC Fans
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
108
(31.7)
127.1
(37.2)
143.5
(42.1)
201.6
(59.1)
241.9
(70.9)
263.7
(77.3)
340.9
(99.9)
—
Sensible kBTUH (kW)
108
(31.7)
127.1
(37.2)
143.5
(42.1)
201.1
(58.9)
239.6
(70.2)
257.9
(75.6)
327.6
(96.0)
—
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
102.4
(30)
119.6
(35.1)
135.1
(39.6)
191.4
(56.1)
230.6
(67.6)
252.3
(73.9)
327.1
(95.9)
—
Sensible kBTUH (kW)
102
(29.9)
118.6
(34.8)
134.1
(39.3)
185.1
(54.2)
219.5
(64.3)
234.8
(68.8)
298.8
(91.2)
—
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45% RH
Total kBTUH (kW)
96.9
(28.4)
113.7
(33.3)
128.5
(37.6)
182.3
(53.4)
220.7
(64.7)
242
(70.9)
314.1
(92.0)
—
Sensible kBTUH (kW)
91.4
(26.8)
106.1
(31.1)
120.1
(35.2)
165.5
(48.5)
195.8
(57.4)
208.3
(61.0)
265.4
(77.8)
—
FAN SECTION - Downflow Models - EC Fans Under Floor
3
Standard Air Volume f /m (m3/h) 4,400
0.2" External Static (7,476)
Standard Fan Motor, Nominal hp (kW)
(total for all fans)
Number of fans
1.
2.
3.
4.
5.
5,200
(8,835)
6200
(10,534)
8,000
(13,592)
9,600
(16,310)
10,400 13,500
(17670) (22937)
13,500
(22937)
3.75
(2.8)
3.75
(2.8)
3.75
(2.8)
3.4
(2.5)
5.4
(4.0)
7.9
(5.9)
10.5
(7.8)
10.5
(7.8)
1
1
1
2
2
2
3
3
Refer to Appendix A for U.S. Department of Energy Performance Data.
Application data is rated and factory certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only.
40% ethylene glycol
17
Liebert® DS™
Liebert DS GLYCOOL™ System Data
Table 11
Application data—GLYCOOL™ units with forward-curved blowers 1
Model Size
028
035
042
053
070
077
105U
105V
APPLICATION DATA WITH FORWARD-CURVED BLOWERS
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor, Semi-Hermetic Compressors
Semi-Hermetic Compressors (Four-Step Cooling) with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
122.4
(35.9)
125.7
(36.8)
142.8
(41.9)
193.2
(56.6)
230.8
(67.6)
255.7
(74.9)
336.5
(98.6)
319.1
(93.5)
Sensible kBTUH (kW)
121.5
(35.6)
125.7
(36.8)
142.8
(41.9)
191.9
(56.2)
227.5
(66.7)
251.7
(73.8)
322.6
(94.6)
316.8
(92.8)
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
116.2
(34.1)
117.7
(34.5)
133.7
(39.2)
183.4
(53.8)
219.4
(64.3)
243.5
(71.4)
321.7
(94.3)
295.2
(86.5)
Sensible kBTUH (kW)
110
(32.3)
116.3
(34.1)
131.9
(38.6)
176
(51.6)
207.3
(60.8)
229.2
(67.2)
293
(89.5)
289.5
(84.8)
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45% RH
Total kBTUH (kW)
110.7
(32.5)
111.1
(32.6)
126.5
(37.1)
174.4
(51.1)
209
(61.3)
232.4
(68.1)
307.6
(90.1)
278.2
(81.5)
Sensible kBTUH (kW)
97.4
(28.5)
103
(30.2)
116.7
(34.2)
156.8
(45.9)
184
(53.9)
202.8
(59.4)
258.9
(75.9)
256.9
(75.3)
Net Application Data BTUH (kW), Standard Air Volume and Evaporator Fan Motor
Scroll Compressors Only
(not available after 12/31/15)
Scroll or Digital Scroll Compressors with Forward-Curved Blowers
85°F DB, 64.5°F WB, 52.3°F DP (29.4°C DB, 18.1°C WB) 32.4% RH
Total kBTUH (kW)
105.8
(31)
123.5
(36.2)
137.8
(40.4)
197.4
(57.9)
236.6
(69.3)
262
(76.8)
334.8
(98.1)
—
Sensible kBTUH (kW)
105.8
(31)
123.5
(36.2)
137.8
(40.4)
195.3
(57.2)
231.8
(67.9)
256.2
(75.1)
321.5
(94.2)
—
80°F DB, 62.9°F WB, 52.3°F DP (26.7°C DB, 17.1°C WB) 38.2% RH
Total kBTUH (kW)
100.2
(29.4)
116.1
(34)
129.3
(37.9)
187.9
(55.1)
225.9
(66.2)
250.6
(73.4)
321
(94.1)
—
Sensible kBTUH (kW)
99.8
(29.2)
115.1
(33.7)
128.6
(37.7)
178.8
(52.4)
211.1
(61.9)
233.1
(68.3)
292.7
(89.4)
—
75°F DB, 61.1°F WB, 52.3°F DP (23.9°C DB, 16.2°C WB) 45% RH
Total kBTUH (kW)
94.7
(27.8)
110.2
(32.3)
122.5
(35.9)
179.1
(52.5)
216.4
(63.4)
240.3
(70.4)
307.9
(90.3)
—
Sensible kBTUH (kW)
89.1
(26.1)
102.5
(30)
114.7
(33.6)
159.2
(46.7)
187.6
(55)
206.6
(60.5)
259.3
(76)
—
13,700
(23,276)
13,700
(23,276)
FAN SECTION - Downflow Models - Fixed Pitch, Two Belts
3
Standard Air Volume f /m (m3/h) 4,400
0.2" External Static (7,476)
6,300
(10,704)
7,500
(12,743)
9,000
(15,291)
10,400
(17,670)
Standard Fan Motor hp (kW)
2 (1.5)
3 (2.2)
5 (3.7)
3 (2.2)
5 (3.7)
7.5 (5.6)
10 (7.5)
10 (7.5)
Optional Fan Motor hp (kW)
3 (2.2)
5 (3.7)
7.5 (5.6)
5 (3.7)
7.5 (5.6)
10 (7.5)
15 (11.2)
15 (11.2)
1
1
1
2
2
2
3
3
Number of Fans
1.
2.
3.
4.
5.
5,200
(8,835)
Refer to Appendix A for U.S. Department of Energy Performance Data.
Application data is rated and factory certified per ASHRAE 127-2012 with a 5% tolerance.
Some options or combinations of options may result in reduced air flow—Contact factory for recommendations.
Digital scroll compressors not available on 077 or 105 models; units available with semi-hermetic and standard scroll compressors only.
40% ethylene glycol
Liebert® DS™
18
Liebert DS GLYCOOL™ System Data
Table 12
Physical data—GLYCOOL™ units
Model Size
028
035
042
053
070
077
105U
105V
EVAPORATOR COIL - A-Frame - Copper Tube/Aluminum Fin
Face Area, sq. ft. (sq. m)
Rows of Coil
17.1 (1.6)
17.1 (1.6)
17.1 (1.6)
24.7 (2.3)
24.7 (2.3)
24.7 (2.3)
32.3 (3.0)
32.3 (3.0)
3
3
3
3
3
3
3
3
REHEAT SECTION
Electric Reheat - Three-Stage, Stainless Steel Fin Tubular, Capacity Does Not Include Fan Motor Heat
Capacity, kBTUH (kW), Standard
51.2 (15.0)
Selection
51.2 (15.0)
51.2 (15.0)
85.3 (25.0)
85.3 (25.0)
85.3 (25.0)
102.4 (30.0)
102.4 (30.0)
Capacity, kBTUH (kW), Optional
34.1 (10.0)
Selection
34.1 (10.0)
34.1 (10.0)
51.2 (15.0)
51.2 (15.0)
51.2 (15.0)
68.3 (20.0)
68.3 (20.0)
85.3 (25.0)
85.3 (25.0)
102.4 (30.0)
102.4 (30.0)
22.0 (10.0)
22.0 (10.0)
22.0 (10.0)
22.0 (10.0)
Electric Reheat - SCR Control, Stainless Steel Fin Tubular (Optional Selection)
Capacity, kBTUH (kW) 51.2 (15.0)
51.2 (15.0)
51.2 (15.0)
85.3 (25.0)
HUMIDIFIER SECTION
Infrared Humidifier
Capacity, lb/hr (kg/h)
11.0 (5.0)
11.0 (5.0)
11.0 (5.0)
22.0 (10.0)
FILTER SECTION - Disposable Type - Nominal Sizes and Quantities, Standard MERV 8 or Optional MERV 11
(filter types cannot be mixed, must be all MERV 8 or all MERV 11)
Downflow Models
Quantity
3
2 @ 25x20
Nominal Size, inches 1 @ 25x16
3
3
4
4
4
4
4
2 @ 25x20
1 @ 25x16
2 @ 25x20
1 @ 25x16
4 @ 25x20
4 @ 25x20
4 @ 25x20
4 @ 25x20
4 @ 25x20
Upflow Models (Front & Rear Return) Filters located in separate filter box on rear return, located on lower unit panel on front return
Quantity
Nominal Size, inches
4
4
4
6
6
6
8
8
25x20
25x20
25x20
25x20
25x20
25x20
25x20
25x20
OUTDOOR DRYCOOLERS - Standard 95°F Ambient Selection; See Table 49 for other selections
Model Number
Number of Fans
D-174
D-174
D-225
D-260
D-310
D-350
D-466
D-466
2
2
2
3
3
3
4
4
CONDENSER FLOW REQUIREMENTS—40% Ethylene Glycol
GLYCOOL SYSTEM - Semi-Hermetic Compressors, Based on 75°F/45% Room Conditions with EC Fans
THR, kBTUH (kW) 154.9 (45.4)
104°F (40°C) EGT, GPM (l/m)
32 (121)
159 (46.6)
33 (125)
189.2 (55.5) 240.8 (70.6) 297.7 (87.2) 339.3 (99.4) 455.9 (133.6) 455.9 (133.6)
40 (151)
49 (185)
62 (235)
71 (269)
95 (360)
95 (360)
Pressure Drop, ft. of water (kPa), 12.9 (38.50) 13.6 (40.60) 19.6 (58.59) 16.0 (47.83) 25.0 (74.73) 32.2 (96.25) 49.6 (148.30) 49.6 (148.30)
GLYCOOL SYSTEM - Digital Scroll Compressors, Based on 75°F/45% Room Conditions with EC
Fans
THR, kBTUH (kW) 134.5 (39.4) 162.4 (47.6) 186.8 (54.7)
104°F (40°C) EGT, GPM (l/m)
28 (98.4)
33.5 (127)
39 (148)
248 (72.7)
51 (193)
Scroll Compressors Only
(not available after 12/31/15)
311.1 (91.2) 351.1 (102.9) 439.1 (128.7)
64 (242)
72 (273)
89 (337)
—
—
Pressure Drop, ft. of water (kPa) 10.0 (29.89) 14.0 (41.85) 18.6 (55.60) 17.2 (51.41) 26.6 (79.51) 33.1 (98.84) 43.8 (130.92)
—
PIPING CONNECTION SIZES - Glycol-Cooled Liebert DS Indoor Unit
Glycol Supply, O.D. Cu 1-5/8" (41)
1-5/8" (41)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
Glycol Return, O.D. Cu 1-5/8" (41)
1-5/8" (41)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
2-1/8" (54)
Infrared Humidifier, O.D. Cu
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
Condensate Drain, FPT
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
Condensate Drain w/Optional
Condensate Pump, OD
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
Hot Water Reheat, O.D. Cu
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
ECON-O-COIL APPLICATION DATA (GLYCOOL Units), 40% Ethylene Glycol, Net Application Data, kBTUH (kW)
75°F DB, 62.57°FWB (23.9°C, 16.9°C) 45% RH, 45°F EGT Room Conditions with EC Fans
Total capacity kBTUH (kW) 82.8 (24.3)
93.9 (27.5) 103.9 (30.4) 156.8 (45.9) 182.3 (53.4) 182.3 (57.2)
243.3 (71.3)
243.3 (71.3)
Sensible Capacity 82.4 (24.1)
93.9 (27.5) 103.9 (30.4) 152.6 (44.7) 176.9 (51.8) 176.9 (55.3)
238.2 (69.8)
238.2 (69.8)
89 (337)
89 (337)
Flow rate, GPM (l/m)
28 (106)
33.5 (127)
39 (148)
51 (193)
64 (242)
72 (273)
Pressure Drop, ft. of water (kPa) 18.4 (55.0) 25.7 (76.82) 33.8 (101.03) 38.9 (116.27) 59.1 (176.65) 73.5 (219.70) 75.2 (224.78) 75.2 (224.78)
FLUID VOLUMES
Unit Volume Without Econ-O-Coil,
gal (l)
4 (15.2)
4 (15.2)
4 (15.2)
7 (26.6)
7 (26.6)
7 (26.6)
8 (30.4)
8 (30.4)
Unit Volume w/Econ-O-Coil, gal (l)
9 (34.2)
9 (34.2)
9 (34.2)
14 (53.2)
14 (53.2)
14 (53.2)
17 (64.6)
17 (64.6)
19
Liebert® DS™
Electrical Data
6.0
ELECTRICAL DATA
6.1
Air-cooled Electrical Data
Table 13
Electrical data—Air-cooled systems with EC fans
Reheat
Options
Electric
Standard, kW
None
Electric
Standard kW
None
Electric,
Downsized kW
Electric,
Downsized kW
Humidifier
Options
Infrared
Infrared
None
None
Humidifier
No Humidifier
230 460 575 208
230 460 575 208
Model
#
Volts 208
FLA
DS028 WSA
230 460 575
208
67.3
64.8 32.1 25.5 56.3
54.1 26.9 24.2 67.3
64.8 32.1 25
43
82
78.9 39.2 31.9 60.6
58.4 29.1 25.9
78.9 39.2 30.5
47.3
49.8
DS035 WSA 86.3
83.2 40.8 31.9 68.3
66.1
83.2 40.8 31.1
55
55
70
70
FLA
78.2
DS042 WSA 95.7
OPD
78.1
92.5
46
36
85.2
83
110
50
45
110
110
32 27.1 86.3
40
30
75.9 37.7 33
90
78.2
41.2 35.8 95.7
30
60
60
30
25
70
49.8 23.7 17.8 63.1
26.2 19.7
35
25
70
69
67
80
80
75.7 37.5 29.4
64.8
64.8 31.9 25.6 78.1
92.5
46
36
71.9
71.9 35.4 28.4 85.2
83
110
50
40
110
40
30
75.9 37.7 33
41.2 35.8
26.9 20.4
35
69
67
32.7 24.8
80
80
64.8
64.8
31.9 25.6
78.4
76.4
37.8 29.6
35
25
100
89.6
DS053 WSA 145.3 140.4 69.4 53.9 117.2 112.8 56.5 45 145.3 140.4 69.4 52.8
90.6
90.62 44.9 33.4 117.2 112.8 56.5 45 110.52 107.4 53.1 40.3
50
150
150
70
50
110
110
60
45
125
125
70
50
125
FLA 129.2 125.3 59.9 46.4 127.8 123.4 58 46.4 129.2 125.3 59.9 45.7 101.2 101.2 46.4 34.8 127.8 123.4 58 46.4 101.4
125
45
25
100
70
50
70
55.3
92.1
125
110
32.7 27.1
70
56.9
45
125
35
30
100
50
45
35
60.9 29.5 25.2
82.6 40.8 30.4 109.2 104.8 52.4 42
70
110
45
30
100
150
45
90
40
82.6
150
50
80
FLA 119.9 116 57.1 43.5 109.2 104.8 52.4 42 119.9 116 57.1 43.5
OPD
110
75.9 37.7 33
80
25.6 19.9
31.1 24.1
68.2 33.4 25.5
80
30
51.9
62.8
60.9 29.5 25.2 70.7
80
35
53.5
64.8
68.2 33.4 25.5 63.1
30
70
460 575
54.1 26.9 24.2
80
45
70
230
62.8 31.1 25.9
70.7
90
30
208
21.1 16.8 56.3
FLA
90
40
43
230 460 575
47.3 23.3 18.5 64.8
OPD
OPD
80
82
230 460 575 208
35
44.1 33.5
60
45
101.2 46.9 35.7
DS070 WSA 156.9 152 72.9 55.5 138.2 133.8 62.8 50 156.9 152.0 72.9 55.5 111.6 111.6 51.2 38.4 138.2 133.8 62.8 50 122.15 119.02 56.6 43
OPD
175
175
80
60
175
175
80
FLA 139.2 134.8 61.4 50 139.2 134.8 61
60
80
60
150
50 134.9 131 61.4 47.5 112.6 112.6 49.4 38.4 139.2 134.8 61
175
175
80
60
150
150
70
50
175
175
50
112.6
150
70
50
112.6 49.4 38.4
DS077 WSA 164 159.2 74.8 57.8 151. 146.6 66.2 54 164.0 159.2 74.8 57.8 124.37 124.4 54.6 42.4 151 146.6 66.2 54 129.27 126.15 58.5 45.3
OPD
175
175
80
70
175
175
80
70
175
175
80
60
150
150
70
50
175
175
80
70
150
150
70
50
FLA 171.5 167.1 83.7 69.1 171.5 167.1 83.7 69.1 164 163.5 79.8 62.6 144.9 144.9 72.1 57.5 171.5 167.1 83.7 69.1 144.9
144.9 72.1 57.5
DS105 WSA 198.8 198.2 97.4 76.4 186.5 182.1 91.6 75.4 198.8 198.2 97.4 76.4 159.9 159.9 80 63.8 186.5 182.1 91.6 75.4 169.3
165.5 81.3 63.9
OPD
1.
2.
3.
4.
5.
6.
225
225 110 100
225
225
110 100 225
225 110 90
Reduced reheat for 028, 035, and 042 models is 10kW.
Reduced reheat for 053, 070, and 077 models is 15kW.
Consult local representative for SCR reheat values.
Reduced reheat for 105 kW models is 20kW.
SCCR - Short Circuit Current Rating 65,000 amps rms symmetrical maximum.
Steam canister humidifiers not available on models with EC fans.
Liebert® DS™
20
200
200 110 80
225
225
110 100
200
200
110 80
Electrical Data
Table 14
Electrical data—Air-cooled systems with forward-curved blowers
Reheat Options
Electric, Std. kW
None
Electric, Std. kW
None
Humidifier Options
Infrared or Steam
Generating Canister
Infrared or Steam
Generating Canister
None
None
Model
028
028
035
035
042
042
Motor
hp Volts
2.0
3.0
3.0
5.0
5.0
7.5
208
230
460
208
230
460
070
5.0
5.0
230
460
575
208
230
460 575
66.4
63.2
31.8 25.2 55.4
52.5
26.6 23.9 66.4
63.2
31.8 24.7 42.1
41.4 20.8 16.5
81.1
77.3
38.9 31.5 59.7
56.8
28.8 25.6 81.1
77.3
38.9 30.2 46.4
45.7
23
18.2
OPD
80
80
60
30
25
40
30
70
70
35
30
80
80
40
30
60
FLA
69.5
66.0
33.2 26.4 58.5
55.3
28.0 25.1 69.5
66.0
33.2 25.9 45.2
44.2 22.2 17.7
WSA
84.2
80.1
40.3
33
62.8
59.6
30.2 26.8 84.2
80.1
40.3 31.4 49.5
48.5 24.4 19.4
OPD
90
80
40
30
80
70
FLA
72.9
69.4
34.5 26.4 65.3
62.1
30.6 26.1 72.9
69.4
34.5 26.4 52.0
51.0 24.8 18.7
WSA
88.5
84.4
41.9 33.0 70.5
67.3
33.1 28.0 88.5
84.4
41.9 32.0 57.2
56.2 27.3 20.6
OPD
90
90
FLA
79.0
75.0
37.3 28.6 71.4
67.7
33.4 28.3 79.0
75.0
37.3 28.6 58.1
56.6 27.6 20.9
WSA
94.6
90.0
44.7 35.8 76.6
72.9
35.9 30.2 94.6
90.0
44.7 34.2 63.3
61.8 30.1 22.8
OPD
100
100
FLA
86.5
82.7
41.6 36.1 86.4
WSA
104
99.3
49.9 39.1 93.5
OPD
110
110
FLA
94.0
89.5
45
45
50
35
35
50
90
90
125
110
40
90
35
90
80
90
40
45
35
70
70
35
25
89.8
45.1 38.9 104.0 99.3
49.9 39.1 80.2
78.7 39.3 31.5
45.0 39.0 93.9
89.5
41
101.4
96
50
40
78.4 39.2 31.6
48.5 41.8 111.5 106.1 53.3 42.0 87.7
85.5 42.7 34.4
110
41
74.8
73.8 37.6 27.9
WSA 137.5 131.6 66.2 50.8 109.4 104.0 53.3 42.5 137.5 131.6 66.2 50.3 82.8
81.8 41.7 30.9
70
110
100
44.8 35.4 80.6
110
125
125
89.3
100
30
45
150
50
45.0 39.0 94.0
45
40
25
71.6 35.8 28.7
50
80
30
41.4 32.5 73.1
110
80
60
82.5
110
35
60
41.6 36.1 86.5
50
45
30
82.7
50
35
90
100
110
45
30
100
110
60
35
80
WSA 111.5 106.1 53.3 42.0 101.0 96.6
OPD
053
208
FLA
FLA 112.1 107.2 53.9
3.0
575
WSA
OPD
053
575
50
125
60
50
125
110
60
49.2 39.5 112.1 107.2 53.9
125
60
50
150
125
70
50
110
110
50
50
45
40
FLA 118.2 112.8 56.7 43.2 107.5 101.6 52.0 41.7 118.2 112.8 56.7 43.2 80.9
79.4 40.4 30.1
WSA 143.6 137.2 69.0 53.5 115.5 109.6 56.1 44.7 143.6 137.2 69.0 52.5 88.9
87.4 44.5 33.1
OPD
110
110
60
45
FLA 127.5 122.1 59.5 46.1 126.1 120.2 57.6 46.1 127.5 122.1 59.5 45.4 99.5
98
46
34.5
150
150
70
50
125
125
70
50
150
150
70
50
WSA 155.2 148.8 72.5 55.2 136.5 130.6 62.4 49.7 155.2 148.8 72.5 55.2 109.9 108.4 50.8 38.1
OPD
175
150
80
60
175
150
80
60
175
150
80
60
150
125
70
50
FLA 135.0 128.9 62.9 49.0 133.6 127.0 61.0 49.0 135.0 128.9 62.9 48.3 107.0 104.8 49.4 37.4
070
077
7.5
7.5
WSA 162.7 155.6 75.9 58.1 144.0 137.4 65.8 52.6 162.7 155.6 75.9 58.1 117.4 115.2 54.2 41.0
OPD
175
FLA
145
175
80
60
175
175
80
60
175
175
80
60
150
150
70
50
138.4 64.4 52.6 145.0 138.4 64.0 52.6 140.7 134.6 64.4 50.1 118.4 116.2 52.4 41.0
WSA 169.8 162.8 77.8 60.4 156.8 150.2 69.2 56.6 169.8 162.8 77.8 60.4 130.2 128.0 57.6 45.0
OPD
200
175
90
70
200
175
80
70
175
175
90
70
175
175
70
60
FLA 151.6 144.4 67.4 54.6 151.6 144.4 67.0 54.6 147.3 140.6 67.4 52.1 125.0 122.2 55.4 43.0
077
10.0
WSA 176.4 168.8 80.8 62.4 163.4 156.2 72.2 58.6 176.4 168.8 80.8 62.4 136.8 134.0 60.6 47.0
OPD
200
200
90
70
200
200
90
70
200
175
90
70
175
FLA 177.4 170.2 88.4 72.6 177.4 170.2 88.4 72.6 169.9 166.6 84.5 66.1 150.8
105
10.0
175
148
80
60
76.8 61.0
WSA 204.7 201.3 102.1 79.9 204.7 201.3 102.1 79.9 204.7 201.3 102.1 79.9 165.8 163.0 84.7 67.3
OPD
250
225
125
100
250
225
125
100
225
225
110
90
225
200
110
90
FLA 192.3 184.2 95.4 78.6 192.3 184.2 95.4 78.6 185.3 180.6 91.5 72.1 166.2 162.0 83.8 67.0
105
15.0
WSA 220.1 215.3 109.1 85.9 220.1 215.3 109.1 85.9 220.1 215.3 109.1 85.9 181.2 177.0 91.7 73.3
OPD
1.
2.
3.
4.
5.
250
250
125
100
250
250
125
100
250
250
125
100
225
225
110
90
Reduced reheat for 028, 035, and 042 models is 10kW.
Reduced reheat for 053, 070, and 077 models is 15kW.
Consult local representative for SCR reheat values.
Reduced reheat for 105 kW models is 20kW.
SCCR - Short Circuit Current Rating 65,000 amps rms symmetrical maximum.
21
Liebert® DS™
Electrical Data
Table 14
Electrical data—Air-cooled systems with forward-curved blowers (continued)
Reheat Options
Electric, Downsized kW
Humidifier Options
Model
Motor, hp
028
028
035
035
042
042
053
053
070
070
077
077
105
105
1.
2.
3.
4.
5.
2.0
3.0
3.0
5.0
5.0
7.5
3.0
5.0
5.0
7.5
7.5
10.0
10.0
15.0
Infrared or Steam Generating Canister
208
230
460
575
208
230
460
575
FLA
55.4
52.5
26.6
23.9
52.6
50.3
25.3
19.6
WSA
63.9
61.2
30.8
25.6
63.9
61.2
30.8
23.8
OPD
70
70
35
30
70
70
35
25
FLA
58.5
55.3
28
25.1
55.7
53.1
26.7
20.8
WSA
67.0
64.0
32.2
26.8
67.0
64.0
32.2
25.0
OPD
80
70
35
30
70
70
35
25
FLA
65.3
62.1
30.6
26.1
59.1
56.5
28.0
21.3
WSA
71.2
68.2
33.8
28.0
71.2
68.2
33.8
25.7
OPD
90
80
40
35
80
80
40
30
FLA
71.4
67.7
33.4
28.3
65.2
62.1
30.8
23.5
WSA
77.3
73.8
36.6
30.2
77.3
73.8
36.6
27.9
OPD
90
90
45
35
90
80
40
30
FLA
86.4
82.7
41.6
36.1
73.1
71.6
35.8
28.7
WSA
93.5
89.8
45.1
38.9
86.7
83.2
41.7
32.7
OPD
110
110
50
50
100
100
50
40
FLA
93.9
89.5
45.0
39.0
80.6
78.4
39.2
31.6
WSA
101.0
96.6
48.5
41.8
94.2
90.0
45.1
35.6
OPD
125
110
60
50
110
110
50
45
FLA
101.4
96.0
49.2
39.5
84.3
80.8
40.9
31
WSA
109.4
104.0
53.3
42.5
102.7
98.6
49.9
37.8
OPD
125
125
60
50
110
110
60
45
FLA
107.5
101.6
52.0
41.7
90.4
86.4
43.7
33.2
WSA
115.5
109.6
56.1
44.7
108.8
104.2
52.7
40.0
OPD
125
125
70
50
125
125
60
45
FLA
126.1
120.2
57.6
46.1
99.7
98
46.5
35.4
WSA
136.5
130.6
62.4
49.7
120.5
115.8
56.2
42.7
OPD
175
150
80
60
150
125
70
50
FLA
133.6
127.0
61.0
49.0
107.2
104.8
49.9
38.3
WSA
144.0
137.4
65.8
52.6
128.0
122.6
59.6
45.6
OPD
175
175
80
60
150
150
70
50
FLA
145
138.4
64.0
52.6
118.4
116.2
52.4
41.0
WSA
156.8
150.2
69.2
56.6
135.1
129.8
61.5
47.9
OPD
200
175
80
70
175
175
70
60
FLA
151.6
144.4
67.0
54.6
125.0
122.2
55.4
43.0
WSA
163.4
156.2
72.2
58.6
141.7
135.8
64.5
49.9
OPD
200
200
90
70
175
175
80
60
FLA
177.4
170.2
88.4
72.6
150.8
148
76.8
61.0
WSA
192.4
185.2
96.3
78.9
175.2
168.6
86.0
67.4
OPD
250
225
125
100
225
200
110
90
FLA
192.8
184.2
95.4
78.6
166.2
162.0
83.8
67.0
WSA
207.8
199.2
103.3
84.9
190.6
182.6
93.0
73.4
OPD
250
250
125
100
225
225
110
90
Reduced reheat for 028, 035, and 042 models is 10kW.
Reduced reheat for 053, 070, and 077 models is 15kW.
Consult local representative for SCR reheat values.
Reduced reheat for 105 kW models is 20kW.
SCCR - Short Circuit Current Rating 65,000 amps rms symmetrical maximum.
Liebert® DS™
None
Volts
22
Electrical Data
6.2
Water/Glycol-Cooled Electrical Data
Table 15
Electrical data—Water/glycol-cooled systems with EC fans
Reheat
Options
Humidifier
Options
Model# Volts 208
FLA
028
82
OPD
80
Infrared
Infrared
230
230 460 575 208
None
78.9 39.2 31.9 60.6 58.4 29.1 25.9
80
230
460 575 208
40
30
70
70
35
30
82
80
None
Humidifier
230 460 575 208
None
230 460 575 208
60
55
55
OPD
40
70
70
90
45
78.2 75.9 37.7
30
80
80
33
78.1 75.9 37.7 33
WSA 95.7 92.5
46
36
85.2
83
OPD
50
45
110
110
110
110
30
90
90
30
25
70
70
35
30
45
45
30
26.2 19.7
35
25
69
67
80
80
32.7 27.1
40
30
78.2 75.7 37.5 29.4 64.8 64.8 31.9 25.6 78.1 75.9 37.7 33
41.2 35.8 95.7 92.5
50
110
460 575
62.8 31.1 24.1
60
32 27.1 86.3 83.2 40.8 31.1
90
230
51.9 25.6 19.9
30
43
Electric,
Downsized kW
21.1 16.8 56.3 54.1 26.9 24.2 53.5
40
43
Electric,
Downsized kW
78.9 39.2 30.5 47.3 47.3 23.3 18.5 64.8 62.8 31.1 25.9 64.8
80
25
None
70
70.7 68.2 33.4 25.5 63.1 60.9 29.5 25.2 70.7 68.2 33.4 25.5 49.8 49.8 23.7 17.8 63.1 60.9 29.5 25.2 56.9
FLA 119.9 116
053
460 575 208
Electric
Standard kW
WSA 86.3 83.2 40.8 31.9 68.3 66.1
FLA
042
None
67.3 64.8 32.1 25.5 56.3 54.1 26.9 24.2 67.3 64.8 32.1
WSA
FLA
035
Electric
Standard, kW
110
57.1 43.5 109.2 104.8 52.4 42 119.9 116
46
36
71.9 71.9 35.4 28.4 85.2
83
50
40
100
110
100
45
70
35
25
55.3 26.9 20.4
69
67
80
80
32.7 24.8
35
25
64.8
64.8 31.9 25.6
41.2 35.8 78.4
76.4 37.8 29.6
45
100
100
57.1 43.5 82.6 82.6 40.8 30.4 109.2 104.8 52.4 42
92.1
89.6 44.1 33.5
35
110
50
45
35
WSA 145.3 140.4 69.4 53.9 117.2 112.8 56.5 45 145.3 140.4 69.4 52.8 90.6 90.62 44.9 33.4 117.2 112.8 56.5 45 110.5 107.4 53.1 40.3
OPD
150
150
70
50
125
125
70
50
150
150
70
50
110
110
60
45
125
125
70
50
125
125
60
45
FLA 129.2 125.3 59.9 46.4 127.8 123.4 58 46.4 129.2 125.3 59.9 45.7 101.2 101.2 46.4 34.8 127.8 123.4 58 46.4 101.4 101.2 46.9 35.7
070
WSA 156.9 152
OPD
175
175
72.9 55.5 138.2 133.8 62.8 50 156.9 152.0 72.9 55.5 111.6 111.6 51.2 38.4 138.2 133.8 62.8 50 122.2 119.02 56.6 43
80
FLA 139.2 134.8 61.4
077
60
175
175
80
50 139.2 134.8 61
60
175
175
50 134.9 131
80
60
150
150
70
50
175
175
80
61.4 47.5 112.6 112.6 49.4 38.4 139.2 134.8 61
60
150
150
70
50
50 112.6 112.6 49.4 38.4
WSA 164 159.2 74.8 57.8 151. 146.6 66.2 54 164.0 159.2 74.8 57.8 124.4 124.4 54.6 42.4 151 146.6 66.2 54 129.3 126.15 58.5 45.3
OPD
175
175
80
70
175
175
80
70
175
175
80
60
150
1*0
70
50
175
175
80
70
150
150
70
50
FLA 171.5 167.1 83.7 69.1 171.5 167.1 83.7 69.1 164 163.5 79.8 62.6 144.9 144.9 72.1 57.5 171.5 167.1 83.7 69.1 144.9 144.9 72.1 57.5
105U
105V
1.
2.
3.
4.
5.
6.
WSA 198.8 198.2 97.4 76.4 186.5 182.1 91.6 75.4 198.8 198.2 97.4 76.4 159.9 159.9 80 63.8 186.5 182.1 91.6 75.4 169.3 165.5 81.3 63.9
OPD
225
FLA
164 163.5 82.5 64.7 158.6 154.2 75.7 62.2 164 163.5 82.5 64.7 132
225
110 100 225
225 110 100 225
225
110
90
200
200 110 80
WSA 198.8 198.2 100.1 78.5 173.6 169.2 83.6 68.5 198.8 198.2 100.1 78.5 147
147
OPD
200 100 80
225
225
110
90
225
225 110 90
225
225
110
90
200
225
225 110 100 200
200
110 80
132 64.1 50.6 158.6 154.2 75.7 62.2 140.4 137.4 69.6 54.7
72 56.9 173.6 169.2 84 68.5 169.3 165.5
225
225 110 90
200
200
84
66
100 80
Reduced reheat for 028, 035, and 042 models is 10kW.
Reduced reheat for 053, 070, and 077 models is 15kW.
Consult local representative for SCR reheat values.
Reduced reheat for 105 kW models is 20kW.
SCCR - Short Circuit Current Rating 65,000 amps rms symmetrical maximum.
Steam canister humidifiers not available on models with EC fans.
23
Liebert® DS™
Electrical Data
Table 16
Electrical data—Water/glycol-cooled systems with forward-curved blowers
Reheat Options
Electric, Std. kW
None
Humidifier
Options
Infrared or Steam
Generating Canister
Infrared or Steam
Generating Canister
Model Motor hp Volts
028
028
035
035
042
042
2.0
3.0
3.0
5.0
5.0
7.5
575
208
230
460
575
208
230
460
575
208
230
460
FLA
66.4
63.2
31.8
25.2
55.4
52.5
26.6
23.9
66.4
63.2
31.8
24.7
42.1
41.4
20.8 16.5
WSA
81.1
77.3
38.9
31.5
59.7
56.8
28.8
25.6
81.1
77.3
38.9
30.2
46.4
45.7
23
18.2
OPD
80
80
40
30
70
70
35
30
80
80
40
30
60
60
30
25
FLA
69.5
66.0
33.2
26.4
58.5
55.3
28.0
25.1
69.5
66.0
33.2
25.9
45.2
44.2
22.2 17.7
WSA
84.2
80.1
40.3
33
62.8
59.6
30.2
26.8
84.2
80.1
40.3
31.4
49.5
48.5
24.4 19.4
OPD
90
80
40
30
80
70
35
30
90
80
40
30
60
60
FLA
72.9
69.4
34.5
26.4
65.3
62.1
30.6
26.1
72.9
69.4
34.5
26.4
52.0
51.0
24.8 18.7
WSA
88.5
84.4
41.9
33.0
70.5
67.3
33.1
28.0
88.5
84.4
41.9
32.0
57.2
56.2
27.3 20.6
OPD
90
90
45
35
90
80
40
35
90
90
45
35
70
70
FLA
79.0
75.0
37.3
28.6
71.4
67.7
33.4
28.3
79.0
75.0
37.3
28.6
58.1
56.6
27.6 20.9
WSA
94.6
90.0
44.7
35.8
76.6
72.9
35.9
30.2
94.6
90.0
44.7
34.2
63.3
61.8
30.1 22.8
OPD
100
100
45
35
90
90
45
35
100
100
45
35
80
80
FLA
86.5
82.7
41.6
36.1
86.4
82.7
41.6
36.1
86.5
82.5
41.4
32.5
73.1
71.6
35.8 28.7
WSA
104
99.3
49.9
39.1
93.5
89.8
45.1
38.9 104.0
99.3
49.9
39.1
80.2
78.7
39.3 31.5
OPD
110
110
50
50
110
110
50
50
110
110
50
45
100
100
FLA
94.0
89.5
45.0
39.0
93.9
89.5
45.0
39.0
94.0
89.3
44.8
35.4
80.6
78.4
39.2 31.6
WSA 111.5 106.1
53.3
42.0 101.0
41.8 111.5 106.1
53.3
42.0
87.7
85.5
42.7 34.4
60
45
110
110
077
7.5
48.5
60
112.1 107.2
53.9
41
101.4
96
49.2
39.5 112.1 107.2
53.9
41
74.8
73.8
37.6 27.9
WSA 137.5 131.6
66.2
53.3
42.5 137.5 131.6
66.2
50.3
82.8
81.8
41.7 30.9
70
50
110
110
1.
2.
3.
4.
5.
50
125
50
40
WSA 143.6 137.2
69.0
53.5 115.5 109.6
56.1
44.7 143.6 137.2
69.0
52.5
88.9
87.4
44.5 33.1
70
50
110
110
60
45
99.5
98
46
34.5
150
150
70
50
125
125
70
50
150
150
127.5 122.1
59.5
46.1 126.1 120.2
57.6
46.1 127.5 122.1
59.5
45.4
WSA 155.2 148.8
72.5
55.2 136.5 130.6
62.4
49.7 155.2 148.8
72.5
55.2 109.9 108.4 50.8 38.1
175
150
80
60
175
150
80
60
175
150
80
60
150
125
70
50
135.0 128.9
62.9
49.0 133.6 127.0
61.0
49.0 135.0 128.9
62.9
48.3 107.0 104.8 49.4 37.4
WSA 162.7 155.6
75.9
58.1 144.0 137.4
65.8
52.6 162.7 155.6
75.9
58.1 117.4 115.2 54.2 41.0
OPD
175
175
80
FLA
145
138.4
64.4
52.6 145.0 138.4
64.0
52.6 140.7 134.6
64.4
50.1 118.4 116.2 52.4 41.0
WSA 169.8 162.8
77.8
60.4 156.8 150.2
69.2
56.6 169.8 162.8
77.8
60.4 130.2 128.0 57.6 45.0
200
175
90
60
70
175
200
175
175
80
80
60
70
175
175
175
175
80
90
60
70
150
175
150
175
70
70
50
60
151.6 144.4
67.4
54.6 151.6 144.4
67.0
54.6 147.3 140.6
67.4
52.1 125.0 122.2 55.4 43.0
WSA 176.4 168.8
80.8
62.4 163.4 156.2
72.2
58.6 176.4 168.8
80.8
62.4 136.8 134.0 60.6 47.0
200
200
177.4 170.2
90
88.4
70
200
200
72.6 177.4 170.2
90
88.4
70
200
175
72.6 169.9 166.6
90
84.5
70
175
66.1 150.8
175
148
80
60
76.8 61.0
WSA 204.7 201.3 102.1 79.9 204.7 201.3 102.1 79.9 204.7 201.3 102.1 79.9 165.8 163.0 84.7 67.3
250
225
192.3 184.2
125
100
95.4
78.6 192.3 184.2
250
225
125
100
95.4
78.6 185.3 180.6
225
225
110
91.5
90
225
200
110
90
72.1 166.2 162.0 83.8 67.0
WSA 220.1 215.3 109.1 85.9 220.1 215.3 109.1 85.9 220.1 215.3 109.1 85.9 181.2 177.0 91.7 73.3
250
250
125
100
125
100
84.5
66.1 164.5 157.3
77.7
63.6 169.9 166.6
WSA 204.7 201.3 102.1 79.9 179.9 172.3
85.6
169.9 166.6
225
225
185.3 180.6
110
91.5
90
250
225
250
225
110
72.1 179.9 171.3
84.7
WSA 220.1 215.3 109.1 85.9 194.9 186.3
92.6
24
250
250
125
100
225
225
110
90
66.1 137.9 135.1 66.1 52
69.9 204.7 201.3 102.1 79.9 152.9 150.1 74 58.3
90
225
225
84.5
90
200
200 100 80
72.1 153.3 149.1 73.1 58
79.5 220.1 215.3 109.1 85.9 168.3 164.1 81 64.3
100 250
250
125 100 225
200 110 80
69.6 185.3 180.6
OPD 250
250
125 100 250
225
110
Reduced reheat for 028, 035, and 042 models is 10kW.
Reduced reheat for 053, 070, and 077 models is 15kW.
Consult local representative for SCR reheat values.
Reduced reheat for 105 kW models is 20kW.
SCCR - Short Circuit Current Rating 65,000 amps rms symmetrical maximum.
Liebert® DS™
150
40.4 30.1
FLA
15.0
60
79.4
OPD
105V
125
80.9
FLA
10.0
125
45
43.2
OPD
105V
50
50
56.7
FLA
15.0
50.8 109.4 104.0
110
41.7 118.2 112.8
OPD
105U
70
125
52.0
FLA
10.0
125
50
43.2 107.5 101.6
OPD
105U
150
110
56.7
FLA
10.0
125
118.2 112.8
OPD
077
40
110
FLA
7.5
50
30
96.6
OPD
070
40
25
125
FLA
5.0
35
25
50
OPD
070
30
575
60
FLA
5.0
None
460
OPD
053
None
230
FLA
3.0
None
208
OPD
053
Electric, Std. kW
110
91.5
Electrical Data
Table 16
Electrical data—Water/glycol-cooled systems with forward-curved blowers (continued)
Reheat Options
Humidifier Options
Model
Motor, hp
Volts
FLA
028
2.0
WSA
OPD
FLA
028
3.0
WSA
OPD
FLA
035
3.0
WSA
OPD
FLA
035
5.0
WSA
OPD
FLA
042
5.0
WSA
OPD
FLA
042
7.5
WSA
OPD
FLA
053
3.0
WSA
OPD
FLA
053
5.0
WSA
OPD
FLA
070
5.0
WSA
OPD
FLA
070
7.5
WSA
OPD
FLA
077
7.5
WSA
OPD
FLA
077
10.0
WSA
OPD
FLA
105U
10.0
WSA
OPD
FLA
105U
15.0
WSA
OPD
FLA
105V
10.0
WSA
OPD
FLA
105V
15.0
WSA
OPD
1.
2.
3.
4.
5.
Electric, Downsized kW
Infrared or Steam Generating Canister
208
230
460
575
208
55.4
52.5
26.6
23.9
52.6
63.9
61.2
30.8
25.6
63.9
70
70
35
30
70
58.5
55.3
28
25.1
55.7
67.0
64.0
32.2
26.8
67.0
80
70
35
30
70
65.3
62.1
30.6
26.1
59.1
71.2
68.2
33.8
28.0
71.2
90
80
40
35
80
71.4
67.7
33.4
28.3
65.2
77.3
73.8
36.6
30.2
77.3
90
90
45
35
90
86.4
82.7
41.6
36.1
73.1
93.5
89.8
45.1
38.9
86.7
110
110
50
50
100
93.9
89.5
45.0
39.0
80.6
101.0
96.6
48.5
41.8
94.2
125
110
60
50
110
101.4
96.0
49.2
39.5
84.3
109.4
104.0
53.3
42.5
102.7
125
125
60
50
110
107.5
101.6
52.0
41.7
90.4
115.5
109.6
56.1
44.7
108.8
125
125
70
50
125
126.1
120.2
57.6
46.1
99.7
136.5
130.6
62.4
49.7
120.5
175
150
80
60
150
133.6
127.0
61.0
49.0
107.2
144.0
137.4
65.8
52.6
128.0
175
175
80
60
150
145
138.4
64.0
52.6
118.4
156.8
150.2
69.2
56.6
135.1
200
175
80
70
175
151.6
144.4
67.0
54.6
125.0
163.4
156.2
72.2
58.6
141.7
200
200
90
70
175
177.4
170.2
88.4
72.6
150.8
192.4
185.2
96.3
78.9
175.2
250
225
125
100
225
192.8
184.2
95.4
78.6
166.2
207.8
199.2
103.3
84.9
190.6
250
250
125
100
225
164.5
157.3
77.7
63.6
146.3
179.5
172.3
86
69.9
175.2
225
225
110
90
200
179.9
171.3
84.7
69.6
161.7
194.9
186.3
93
75.9
190.6
250
225
110
100
225
None
230
50.3
61.2
70
53.1
64.0
70
56.5
68.2
80
62.1
73.8
80
71.6
83.2
100
78.4
90.0
110
80.8
98.6
110
86.4
104.2
125
98
115.8
125
104.8
122.6
150
116.2
129.8
175
122.2
135.8
175
148
168.6
200
162.0
182.6
225
140.5
168.6
200
154.5
182.6
225
460
25.3
30.8
35
26.7
32.2
35
28.0
33.8
40
30.8
36.6
40
35.8
41.7
50
39.2
45.1
50
40.9
49.9
60
43.7
52.7
60
46.5
56.2
70
49.9
59.6
70
52.4
61.5
70
55.4
64.5
80
76.8
86.0
110
83.8
93.0
110
71.6
86
110
78.6
93
110
575
19.6
23.8
25
20.8
25.0
25
21.3
25.7
30
23.5
27.9
30
28.7
32.7
40
31.6
35.6
45
31
37.8
45
33.2
40.0
45
35.4
42.7
50
38.3
45.6
50
41.0
47.9
60
43.0
49.9
60
61.0
67.4
90
67.0
73.4
90
56.1
67.4
80
62.1
73.4
90
Reduced reheat for 028, 035, and 042 models is 10kW.
Reduced reheat for 053, 070, and 077 models is 15kW.
Consult local representative for SCR reheat values.
Reduced reheat for 105 kW models is 20kW.
SCCR - Short Circuit Current Rating 65,000 amps rms symmetrical maximum.
25
Liebert® DS™
Weights and Dimensions
7.0
WEIGHTS AND DIMENSIONS
Table 17
Liebert DS shipping and unit weights—approximate
Downflow
Model #
Compressor
Type
Scroll or
Digital Scroll
DS028-042
Semi-Hermetic
Scroll or
Digital Scroll
DS053
Semi-Hermetic
Scroll or
Digital Scroll
DS070
Semi-Hermetic
Scroll or
Digital Scroll
DS077
Semi-Hermetic
Scroll or
Digital Scroll
DS105
Semi-Hermetic
Liebert® DS™
Upflow
Cooling Type
EC Fan Unit
Weight lb (kg)
EC Fan Unit
Weight lb (kg)
Forward-Curved
Unit Weight, lb (kg)
Air Cooled
1470 (668)
1370 (621)
1520 (689)
Dual Cool
1620 (736)
1520 (689)
1670 (758)
Water/Glycol
1780 (809)
1680 (762)
1830 (830)
GLYCOOL/ Dual Cool
1930 (877)
1830 (830)
1980 (898)
Air Cooled
1780 (809)
1680 (762)
1830 (830)
Dual Cool
1930 (877)
1830 (830)
1980 (898)
Water/Glycol
1930 (877)
1830 (830)
1980 (898)
GLYCOOL/ Dual Cool
2080 (945)
1980 (898)
2130 (966)
Air Cooled
1920 (871)
1900 (862)
2070 (939)
Dual Cool
2100 (953)
2080 (943)
2250 (1021)
Water/Glycol
2220 (1010)
2200 (998)
2370 (1075)
GLYCOOL/ Dual Cool
2400 (1091)
2380 (1080)
2550 (1157)
Air Cooled
2350 (1069)
2180 (989)
2350 (1069)
Dual Cool
2530 (1150)
2360 (1070)
2530 (1150)
Water/Glycol
2650 (1205)
2480 (1125)
2650 (1205)
GLYCOOL/ Dual Cool
2830 (1287)
2660 (1207)
2830 (1287)
Air Cooled
1970 (894)
1900 (862)
2070 (939)
Dual Cool
2150 (975)
2080 (943)
2250 (1021)
Water/Glycol
2270 (1032)
2200 (998)
2370 (1075)
GLYCOOL/ Dual Cool
2450 (1114)
2380 (1080)
2550 (1157)
Air Cooled
2400 (1091)
2330 (1057)
2500 (1134)
Dual Cool
2580 (1173)
2510 (1139)
2680 (1216)
Water/Glycol
2700 (1228)
2630 (1193)
2800 (1270)
GLYCOOL/ Dual Cool
2880 (1310)
2810 (1275)
2980 (1352)
Air Cooled
2020 (916)
1900 (862)
2070 (939)
Dual Cool
2200 (998)
2080 (943)
2250 (1021)
Water/Glycol
2320 (1055)
2200 (998)
2370 (1075)
GLYCOOL/ Dual Cool
2500 (1137)
2380 (1080)
2550 (1157)
Air Cooled
2450 (1114)
2330 (1057)
2500 (1134)
Dual Cool
2630 (1196)
2510 (1139)
2680 (1216)
Water/Glycol
2750 (1250)
2630 (1193)
2800 (1270)
GLYCOOL/ Dual Cool
2930 (1332)
2810 (1275)
2980 (1352)
Air Cooled
2660 (1207)
2640 (1197)
2880 (1306)
Dual Cool
3015 (1368)
2970 (1347)
3210 (1456)
Water/Glycol
3030 (1374)
3010 (1365)
3250 (1474)
GLYCOOL/ Dual Cool
3385 (1535)
3340 (1515)
3580 (1624)
Air Cooled
2780 (1261)
2760 (1252)
3000 (1361)
Dual Cool
3135 (1422)
3090 (1402)
3330 (1510)
Water/Glycol
3150 (1429)
3130 (1420)
3370 (1529)
GLYCOOL/ Dual Cool
3505 (1590)
3460 (1569)
3700 (1678)
26
Weights and Dimensions
Figure 8
Cabinet and floor planning dimensions—Downflow, air-cooled, 28-42kW (8-12 tons), scroll or
digital scroll compressors with EC fans
Secondary Refrigerant
Piping Entrance
56-7/8" (1445mm)
Opening
33"
(838mm)
35"
(889mm)
Filters are accessible
through top of unit only.
Downflow electrical
connections can be made
from top or bottom of unit.
24-3/8"
(619mm)
Opening
AIR INLET OPENING
1-3/4" (44mm)
Handle
5/16"
Bezel
(8mm)
Secondary Entrance
High-Voltage Connection(s)
TOP VIEW
Secondary Entrance
Low-Voltage Connection(s)
Minimum required
for filter replacement
73" (1854mm)
5"
(127mm)
76"
(1930mm)
34" (864mm)
2"
(51mm)
Shaded area indicates a
recommended minimum
clearance from floor to top
of unit and plenum for
component access.
72" (1829mm)
DPN003131
Rev. 1
FRONT VIEW
27
Liebert® DS™
Weights and Dimensions
Figure 9
Primary connection locations—Downflow, air-cooled, 28-42kW (8-12 tons), EC fans, scroll or
digital scroll compressor models
NOTES:
A
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ±1/2" (13mm).
A
FRONT VIEW
SECTION A-A
All dimensions from
rear corner of unit
including panels
X
O
Y
R
4" (102mm)
L1 L2 G1 G2
11.19"
(284mm)
35"
(889mm)
BLOWER
OUTLET
ECS
LV1
LV2
LV3
HUM
CD
B
E1 E2 ECR
4.5"
(114mm)
73" (1854mm)
FRONT OF UNIT
Point
R
L1
L2
G1
G2
CD
HUM
ECS
ECR
HS
HR
E1
E2
LV1
LV2
LV3
B
Description
Refrigerant Access
Liquid Line System 1
Liquid Line System 2
Hot Gas Discharge 1
Hot Gas Discharge 2
Condensate Drain 1
(Infrared Humidifier or No Humidifier)
Condensate Drain 1
(Steam Generating Humidifier)
w/Optional Pump
Humidifier Supply Line
Econ-O-Coil Supply
Econ-O-Coil Return
Hot Water Reheat Supply
Hot Water Reheat Return
Electrical Connection (High-Voltage)
Electrical Connection (High-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
Blower Outlet
DPN003239
Rev. 0
X
Y
Connection Size / Opening
59-5/16 (1507)
69-15/16 (1776)
67-5/8 (1718)
65-1/2 (1664)
62-7/16 (1586)
14-3/4 (375)
16-13/16 (411)
16-13/16 (411)
16-13/16 (411)
16-13/16 (411)
11-3/16 x 4 (284 x 102)
1/2" Cu Sweat
1/2" Cu Sweat
5/8" Cu Sweat
5/8" Cu Sweat
46 (1168)
29-1/2 (749)
3/4" FPT
46 (1168)
29-1/2 (749)
1-1/4" FPT
46 (1168)
53-1/2 (1359)
54-7/8 (1394)
49-3/8 (1254)
55-1/2 (1410)
52-7/16 (1332)
2-1/4 (57)
2-1/4 (57)
2-1/4 (57)
4-1/2 (114)
29-1/2 (749)
1/2" Cu Sweat
29 (737)
1/4" Cu Sweat
22-9/16 (573)
1-5/8" Cu Sweat
30-3/4 (781)
1-5/8" Cu Sweat
Consult Factory
Consult Factory
31-1/4 (794)
2-1/2"
31-1/4 (794)
2-1/2"
27 (686)
7/8"
29 (737)
7/8"
31 (787)
7/8"
33 (838)
31 x 31 (787 x 787)
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Source: DPN003239, Rev. 0
Liebert® DS™
28
Weights and Dimensions
Figure 10
Cabinet and floor planning dimensions—Downflow, air-cooled, 28-42kW (8-12 tons),
semi-hermetic compressors with EC fans
Secondary Refrigerant
Piping Entrance
33"
(838mm)
35"
(889mm)
56-7/8"
Opening
(1445mm)
AIR INLET OPENING
1-3/4"
(44mm) Handle
24-3/8"
(619mm)
Opening
Filters are accessible
through top of unit only.
Downflow electrical
connections can be made
from top or bottom of unit.
5/16"
(8mm) Bezel
Secondary Entrance
High-Voltage Connection(s)
TOP VIEW
Secondary Entrance
Low-Voltage Connections
Minimum required
for filter replacement
86" (2184mm)
5"
(127mm)
76"
(1930mm)
34"
(864mm)
2"
(51mm)
Shaded area indicates a
recommended minimum
clearance from floor
to top of unit and plenum
for component access.
85" (2159mm)
DPN003130
Rev. 1
FRONT VIEW
29
Liebert® DS™
Weights and Dimensions
Figure 11
Primary connection locations—Downflow, air-cooled, 28-42kW (8-12 tons), EC fans,
semi-hermetic compressor models
NOTES:
A
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ±1/2" (13mm).
All dimensions from
rear corner of unit
including panels
A
FRONT VIEW
O
X
Y
R
L1 L2 G1 G2
35"
(889mm)
BLOWER
OUTLET
4" (102mm)
16-7/16"
(418mm)
ECS
LV1
HUM
LV2
CD
E1 E2 ECR
B
SECTION A-A
FRONT OF UNIT
86"
(2184mm)
LV3
4.5"
(114mm)
DPN003598
Rev. 0
Point
R
L1
L2
G1
G2
CD
HUM
ECS 2
ECR 2
E1
E2
LV1
LV2
LV3
B
Description
Refrigerant Access
Liquid Line System 1
Liquid Line System 2
Hot Gas Discharge 1
Hot Gas Discharge 2
Condensate Drain 1
(Infrared Humidifier or No Humidifier)
Condensate Drain 1
(Steam Generating Humidifier)
w/Optional Pump
Humidifier Supply Line
Econ-O-Coil Supply
Econ-O-Coil Return
Electrical Connection (High-Voltage)
Electrical Connection (High-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
Blower Outlet
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
63 (1600)
79-3/16 (2011)
76-1/2 (1943)
73-7/8 (1876)
70-1/8 (1780)
13-13/16 (351)
16-3/4 (425)
16-3/4 (425)
16-3/4 (425)
16-3/4 (425)
16-7/16 x 4 (418 x 102)
1/2 Cu Sweat
1/2 Cu Sweat
5/8 Cu Sweat
5/8 Cu Sweat
46 (1168)
29-1/2 (749)
3/4 FPT
46 (1168)
29-1/2 (749)
1-1/4 FPT
46 (1168)
53-1/2 (1359)
54-7/8 (1394)
49-3/8 (1254)
55-1/2 (1410)
52-7/16 (1332)
2-1/4 (57)
2-1/4 (57)
2-1/4 (57)
4-1/2 (114)
29-1/2 (749)
29 (737)
22-9/16 (573)
30-3/4 (781)
31-1/4 (794)
31-1/4 (794)
27 (686)
29 (737)
31 (787)
33 (838)
1/2 Cu Sweat
1/4 Cu Sweat
1-5/8 Cu Sweat
1-5/8 Cu Sweat
2-1/2
2-1/2
7/8
7/8
7/8
31 x 31 (787 x 787)
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cooling systems only (four-pipe system).
3. Source: DPN003598, Rev. 0
Liebert® DS™
30
Weights and Dimensions
Figure 12
Cabinet and floor planning dimensions—Downflow, air-cooled, 53-77kW (15-22 tons), scroll or
digital scroll compressors with EC fans
Digital scroll compressors
not available on 077 models.
Second Refrigerant
Piping Entrance
80" (2032mm)
Opening
33"
(838mm)
35"
(889mm)
Secondary Entrance
High-Voltage Connection(s)
Filters are accessible
through top of unit only.
24-5/8"
(625mm)
Opening
AIR INLET OPENING
1-3/4"
(44mm) Handle
TOP VIEW
Downflow electrical
connections can be made
from top or bottom of unit.
5/16"
(8mm)
Minimum required
Bezel
for filter replacement
Secondary Entrance
Low-Voltage Connections
5"
(127mm)
98" (2489mm)
76"
(1930mm)
34"
(864mm)
2"
(51mm)
Shaded area indicates a
recommended minimum
clearance from floor to top
DPN003138
of unit and plenum
for component access. Rev. 2
97" (2464mm)
FRONT VIEW
31
Liebert® DS™
Weights and Dimensions
Figure 13
Primary connection locations—Downflow, air-cooled, 53-77kW (15-22 tons), scroll or digital
scroll compressors, EC fans
Digital scroll compressors not
available on 077 models.
NOTE: Drawing not to scale.
Tolerance on
A
all piping dimensions
is ± 1/2" (13mm).
A
FRONT VIEW
SECTION A-A
All dimensions from
rear corner of unit
including panels
X
O
Y
R
4" (102mm)
L1 L2
BLOWER
OUTLET
G1 G2
35"
(889mm)
12-3/16"
(310mm)
ECS ECR
CD
E1 E2
B1
LV1
LV2
LV3
HUM
98" (2489mm)
DPN002182
Rev. 3
FRONT OF UNIT
Point
R
Description
Refrigerant Access
X in. (mm)
Y in. (mm)
Connection Size / Opening in. (mm)
81-3/4 (2076)
14-3/4 (374)
12-3/16x4 (310x102)
53kW (15 tons)/ 70 & 77kW (20 & 22 tons)
L1
Liquid Line System 1
94-11/16 (2405)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
L2
Liquid Line System 2
91-7/8 (2334)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
G1
Hot Gas Discharge 1
88-3/4 (2254)
16-3/8 (416)
7/8 / 1-1/8 Cu Sweat
G2
Hot Gas Discharge 2
85-9/16 (2173)
16-3/8 (416)
7/8 / 1-1/8 Cu Sweat
Condensate Drain
(Infrared Humidifier or No Humidifier)
68-3/8 (1737)
31-3/8 (797)
3/4 FPT
W/ Optional Pump
68-3/8 (1737)
31-3/8 (797)
1/2 Cu Sweat
76-1/2 (1943)
29 (736)
1/4 Cu Sweat
CD 1
HUM
Humidifier Supply Line
2
Econ-O-Coil Supply
78-5/8 (1997)
22-1/4 (565)
2-1/8 Cu Sweat
ECR 2
Econ-O-Coil Return
73-15/16 (1862)
26-9/16 (675)
2-1/8 Cu Sweat
ECS
E1
Electrical Conn. (High-Voltage)
78-1/2 (1994)
31-1/8 (790)
2-1/2
E2
Electrical Conn. (High-Voltage)
75-3/8 (1915)
31-1/8 (790)
2-1/2
LV1
Electrical Conn. (Low-Voltage)
2 (51)
29 (737)
7/8
LV2
Electrical Conn. (Low-Voltage)
2 (51)
30-7/8 (784)
7/8
LV3
Electrical Conn. (Low-Voltage)
2 (51)
32 (813)
7/8
B1
Blower Outlet
4-1/2 (114)
33 (838)
58-3/8x30 (1483x762)
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only (four-pipe system).
3. Digital scroll compressors not available on 077 models.
4. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
5. Source: DPN002182, Rev. 3
Liebert® DS™
32
Weights and Dimensions
Figure 14
Cabinet and floor planning dimensions—Downflow, air-cooled, 53-77kW (15-22 tons),
semi-hermetic compressors with EC fans
Second Refrigerant
Piping Entrance
80" (2032mm)
Opening
33"
(838mm)
35"
(889mm)
Secondary Entrance
High-Voltage Connection(s)
24-5/8"
(625mm)
Opening
AIR INLET OPENING
1-3/4"
(44mm) Handle
TOP VIEW
Filters are accessible
through top of unit only.
Downflow electrical
connections can be made
from top or bottom of unit.
5/16"
(8mm)
Bezel
Secondary Entrance
Low-Voltage Connections
Minimum required
for filter replacement
109" (2769mm)
5"
(125mm)
76"
(1930mm)
Shaded area indicates a
recommended minimum
clearance be provided for
component access.
108" (2743mm)
2"
(51mm)
FRONT VIEW
33
34"
(864mm)
DPN003137
Rev. 2
Liebert® DS™
Weights and Dimensions
Figure 15
Primary connection locations—Downflow, air-cooled 53-77kW (15-22 tons), semi-hermetic
compressors with EC fans
All dimensions from
rear corner of unit
including panels
NOTE
A
Drawing not to scale.
Tolerance on all piping
dimensions is ± 1/2" (13mm).
A
FRONT VIEW
X
O
SECTION A-A
Y
R
L1 L2
4" (102mm)
G1 G2
35"
(889mm)
BLOWER
OUTLET
16-7/16"
(418mm)
ECS ECR
CD
E1
B1
LV1
LV2
LV3
HUM
109" (2769mm)
DPN002179
Rev. 1
FRONT OF UNIT
Point
R
Description
Refrigerant Access
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
82-3/4 (2102)
13-7/8 (352)
16-7/16 x 4 (4181x102)
53kW (15 tons) /70 & 77kw (20 & 22 tons)
L1
Liquid Line System 1
97 (2464)
16-7/8 (428)
1/2 / 5/8 Cu Sweat
L2
Liquid Line System 2
93-5/16 (2370)
16-7/8 (428)
1/2 / 5/8 Cu Sweat
G1
Hot Gas Discharge 1
90-5/8 (2302)
16-5/8 (422)
7/8 / 1-1/8 Cu Sweat
G2
Hot Gas Discharge 2
88 (2235)
16-5/8 (422)
7/8 / 1-1/8 Cu Sweat
Condensate Drain
(Infrared Humidifier or No Humidifier)
68-3/8 (1737)
31-3/8 (797)
3/4 FPT
W/ Optional Pump
68-3/8 (1737)
31-3/8 (797)
1/2 Cu Sweat
Humidifier Supply Line
76-1/2 (1943)
29 (736)
1/4 Cu Sweat
CD 1
HUM
2
Econ-O-Coil Supply
78-5/8 (1997)
22-1/4 (565)
2-1/8 Cu Sweat
ECR 2
Econ-O-Coil Return
73-15/16 (1862)
26-9/16 (675)
2-1/8 Cu Sweat
ECS
E1
Electrical Conn. (High-Voltage)
78-1/2 (1994)
31-1/8 (790)
2-1/2
E2
Electrical Conn. (High-Voltage)
75-3/8 (1915)
31-1/8 (790)
2-1/2
LV1
Electrical Conn. (Low-Voltage)
2 (51)
29 (737)
7/8
LV2
Electrical Conn. (Low-Voltage)
2 (51)
30-7/8 (784)
7/8
LV3
Electrical Conn. (Low-Voltage)
2 (51)
32 (813)
7/8
B1
Blower Outlet
4-1/2 (114)
33 (838)
58-3/8 x 30 (1483x762)
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only (four-pipe system).
3. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
4. Source: DPN002179, Rev. 1
Liebert® DS™
34
Weights and Dimensions
Figure 16
Cabinet and floor planning dimensions—Downflow, air-cooled, 105kW (30 tons), standard
scroll and semi-hermetic compressors with EC fans
Secondary Refrigerant
Piping Entrance
33"
(838mm)
35"
(889mm)
Secondary Entrance
High-Voltage Connection(s)
102-13/16"
(2611mm) Opening
AIR INLET OPENING
TOP VIEW
1-3/4"
(44mm) Handle
Digital scroll compressors
not available on 105 models.
24-3/8"
(619mm)
Opening
5/16"
(8mm)
Bezels
Secondary Entrance
Low-Voltage Connections
Minimum required
for filter replacement
132" (3353mm)
5"
(127mm)
76"
(1930mm)
34" (864mm)
Shaded area indicates the
minimum clearance
required from floor to
top of unit and plenum for
component access.
131" (3327mm)
FRONT VIEW
Filters are accessible through top of unit only.
Downflow electrical connections can be made
from top or bottom of unit.
35
DPN0003145
Rev. 2
Liebert® DS™
Weights and Dimensions
Figure 17
Primary connection locations—Downflow, air-cooled, 105kW (30 tons), standard scroll and
semi-hermetic compressors with EC fans
Digital scroll compressors not
available on 105 models.
NOTE
A
Drawing not to scale.
Tolerance on all piping
dimensions is ± 1/2" (13mm).
A All dimensions from
rear corner of unit
including panels
FRONT OF UNIT
SECTION A-A
X
O
Y
G1 G2 R
4" (102mm)
L1 L2
16-7/16"
(418mm)
35"
(889mm)
BLOWER
OUTLET
ECS ECR
CD
E1
E2
B1
LV1
LV2
LV3
HUM
132" (3353mm)
DPN002154
Rev. 1
FRONT VIEW
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
109 (2769)
15-3/4 (400)
16-7/16 x 4 (418 x 102)
Liquid Line System 1
121-3/4 (3092)
16-3/4 (425)
5/8 Cu Sweat
Liquid Line System 2
118-1/8 (3000)
16-3/4 (425)
5/8 Cu Sweat
G1
Hot Gas Discharge 1
118-1/4 (3004)
14-1/4 (362)
1-1/8 Cu Sweat
G2
Hot Gas Discharge 2
115-5/8 (2937)
14-1/4 (362)
1-1/8 Cu Sweat
CD 1
Condensate Drain
(Infrared Humidifier or No Humidifier)
87-3/8 (2220)
31 (787)
3/4 FPT
W/ Optional Pump
83-13/16 (2129)
30 (762)
1/2 Cu Sweat
HUM
Humidifier Supply Line
85-5/16 (2167)
32-1/2 (825)
1/4 Cu Sweat
ECS 2
Econ-O-Coil Supply
101-7/8 (2588)
29 (737)
2-5/8 Cu Sweat
ECR 2
Econ-O-Coil Return
94-9/16 (2402)
29 (737)
2-5/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
98-1/8 (2492)
31 (788)
2-1/2
E2
Electrical Connection (High-Voltage)
91 (2311)
31 (788)
2-1/2
LV1
Electrical Connection (Low-Voltage)
2 (51)
29 (737)
7/8
LV2
Electrical Connection (Low-Voltage)
2 (51)
30-7/8 (784)
7/8
LV3
Electrical Connection (Low-Voltage)
2 (51)
32 (813)
7/8
B1
Blower Outlet
4-1/2 (114)
33 (838)
77-3/8 x 30 (1965 x 762)
Point
Description
R
Refrigerant Access
L1
L2
1. Field-pitch condensate drain line a minimum of 1/8" (3.2mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only (four-pipe system)
3. Digital scroll compressors not available on DS105
4. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
5. Source: DPN002154, Rev. 1
Liebert® DS™
36
Weights and Dimensions
7.1
Downflow Model Dimensions and Primary Connections—
Water/Glycol/GLYCOOL™ Systems
Figure 18
Cabinet and floor planning dimensions—Downflow, water/glycol/GLYCOOL, 28-42kW
(8-12 tons), all compressors with EC fans
Condenser
Cleanout
Access
56-7/8" (1445mm)
Opening
35"
(889mm)
AIR INLET OPENING
33"
(838mm)
1-3/4"
(44mm) Handle
24-3/8"
(619mm)
Opening
5/16
(8mm)
Bezel
Secondary Condenser Fluid
Piping Entrance
TOP VIEW
Secondary Entrance
High-Voltage Connection(s)
Secondary Entrance
Low-Voltage Connections
Filters are accessible
through top of unit only.
Downflow electrical
connections can be made
from top or bottom of unit.
86" (2184mm)
Required for
condenser cleanout
24"
(610mm)
Minimum required
for filter replacement
15"
(381mm)
76"
(1930mm)
2"
(51mm)
Shaded area indicates a
recommended minimum
clearance from floor to top
of unit and plenum for
component access.
85" (2159mm)
FRONT VIEW
37
34"
(864mm)
DPN003135
Rev. 2
Liebert® DS™
Weights and Dimensions
Figure 19
Primary connection locations—Downflow, water/glycol/GLYCOOL™, 28-42kW, EC fans, all
compressor models
NOTE
1. Drawing not to scale.
2. Tolerance on all
piping dimensions
is ±1/2" (13mm).
A
All dimensions from
rear corner of unit
including panels
A
FRONT VIEW
X
SECTION A-A
O
Y
8"
(203mm)
35"
(889mm)
BLOWER
OUTLET
ECS
3-1/2"
(89mm)
HUM
CD
E1 E2 ECR
B
LV1
LV2
LV3
4-1/2"
(114mm)
86" (2184mm)
FRONT
Description
Point
X
in. (mm)
DPN003530
Rev. 0
Connection Size / Opening
in. (mm)
Y
in. (mm)
28-35kW (8-10 tons) / 42kW (12 tons)
W
Water/Glycol/GLYCOOL Access
79-15/16 (2030)
9-1/16 (230)
3-1/2 x 8 (89 x 203)
WS
Water/Glycol/GLYCOOL Supply
82-15/16 (2107)
10-15/16 (278)
1-5/8 / 2-1/8 Cu Sweat
WR
Water/Glycol/GLYCOOL Return
82-15/16 (2107)
14-1/16 (357)
1-5/8 / 2-1/8 Cu Sweat
ECS
Econ-O-Coil Supply
2
54-7/8 (1394)
22-9/16 (573)
1-5/8 / 2-1/8 Cu Sweat
Econ-O-Coil Return
2
49-13/16 (1265)
28-1/2 (724)
1-5/8 / 2-1/8 Cu Sweat
46 (1168)
29-1/2 (749)
3/4 FPT
Condensate Drain
(Steam Generating Humidifier)
46 (1168)
29-1/2 (749)
1-1/4 FPT
W/ Optional Pump
46 (1168)
29-1/2 (749)
1/2 Cu Sweat
53-1/2 (1359)
29 (737)
ECR
Condensate Drain 1
(Infrared Humidifier Or No Humidifier)
CD
1
HUM
Humidifier Supply Line
HS
Hot Water Reheat Supply
1/4 Cu Sweat
Consult Factory
HR
Hot Water Reheat Return
E1
Electrical Connection (High-Voltage)
55-1/2 (1410)
31-1/4 (794)
Consult Factory
2-1/2
E2
Electrical Connection (High-Voltage)
52-7/16 (1332)
31-1/4 (794)
2-1/2
LV1
Electrical Connection (Low-Voltage)
2-1/4 (57)
27 (686)
7/8
LV2
Electrical Connection (Low-Voltage)
2-1/4 (57)
29 (737)
7/8
LV3
Electrical Connection (Low-Voltage)
2-1/4 (57)
31 (787)
7/8
B
Blower Outlet
4-1/2 (114)
33 (838)
31 x 31 (787 x 787)
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only (four-pipe systems).
3. Source: DPN003530, Rev. 0
Liebert® DS™
38
Weights and Dimensions
Figure 20
Cabinet and floor planning dimensions—Downflow, water/glycol/GLYCOOL™, 53-77kW (15-22
tons), all compressors with EC fans
Digital scroll compressors
not available on 077 models.
Condenser Cleanout Access
80" (2032mm)
Opening
33"
(838mm)
24-5/8"
(625mm)
Opening
AIR INLET OPENING
35"
(889mm
1-3/4"
Secondary Condenser
(44mm) Handle
Fluid Piping Entrance
TOP VIEW
Secondary Entrance
High-Voltage Connection(s)
Secondary Entrance
Low-Voltage Connections
Filters are accessible
through top of unit only.
Downflow electrical
connections can be made
from top or bottom of unit.
5/16"
(8mm)
Bezel
24"
(610mm)
109"
(2769mm)
Required for
condenser cleanout
Minimum
required
for filter
replacement
5"
(127mm)
76"
(1930mm)
2"
(51mm)
34"
Shaded area indicates a
(864mm)
recommended minimum
clearance from floor to top
DPN003142
of unit and plenum
Rev. 2
for component access.
108" (2743mm)
FRONT VIEW
39
Liebert® DS™
Weights and Dimensions
Primary connection locations—Downflow, water/glycol/GLYCOOL™, 53-77kW, all compressors
with EC fans
Figure 21
Digital scroll compressors
not available on 077 models.
NOTE: Drawing not to scale.
Tolerance on
all piping dimensions
A
is ± 1/2" (13mm).
A
FRONT VIEW
SECTION A-A
All dimensions from
rear corner of unit
including panels
X
O
3-1/2"
(89mm)
Y
W
WS
WR
8"
(203mm)
35"
(889mm)
ECS ECR
CD
B1
LV1
LV2
LV3
E1 E2 HUM
109" (2769mm)
DPN002183
Rev. 1
FRONT OF UNIT
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
Water/Glycol/GLYCOOL Access
103 (2616)
9 (229)
3-1/2 x 8 (89 x 203)
WS
Water/Glycol/GLYCOOL Supply
104-3/4 (2661)
11 (279)
2-1/8 Cu Sweat
WR
Water/Glycol/GLYCOOL Return
104-3/4 (2661)
15 (381)
2-1/8 Cu Sweat
CD
Condensate Drain
(Infrared Humidifier or No Humidifier)*
69-1/4 (1759)
30 (762)
3/4 FPT
W/ Optional Pump
69-1/4 (1759)
30 (762)
1/2 Cu Sweat
HUM
Humidifier Supply Line
76-1/2 (1943)
29 (736)
1/4 Cu Sweat
ECS 3
Econ-O-Coil Supply
78-5/8 (1997)
22-1/4 (565)
2-1/8 Cu Sweat
ECR 3
Econ-O-Coil Return
73-15/16 (1862)
26-9/16 (675)
2-1/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
78-1/2 (1994)
31-1/8 (790)
2-1/2
E2
Electrical Connection (High-Voltage)
75-3/8 (1915)
31-1/8 (790)
2-1/2
LV1
Electrical Connection (Low-Voltage)
2 (51)
28-1/2 (724)
7/8
LV2
Electrical Connection (Low-Voltage)
2 (51)
30-1/4 (768)
7/8
LV3
Electrical Connection (Low-Voltage)
2 (51)
32 (813)
7/8
B1
Blower Outlet
4-1/28 (114)
133 (838)
58-3/8 x 30 (1483 x 762)
Point
Description
W
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Digital scroll compressors not available on DS077.
3. Supplied on dual-cool systems only (four-pipe system).
4. Source: DPN002183, Rev. 0
Liebert® DS™
40
Weights and Dimensions
Figure 22
Cabinet and floor planning dimensions—Downflow, water/glycol/GLYCOOL™, 105kW (30
tons), all compressors with EC fans
Digital scroll compressors not
available on 105 models.
Condenser Cleanout Access
102-13/16"
(2611mm) Opening
33"
(838mm)
AIR INLET OPENING
35"
(889mm)
Filters are accessible
through top of unit only.
Downflow electrical
24-3/8"
connections can be made
(619mm)
from top or bottom of unit.
Opening
5/16"
(8mm Bezel
Secondary Condenser
Fluid Entrance
Secondary Entrance
High-Voltage Connection(s)
1-3/4"
(44mm) Handle
Secondary Entrance
Low-Voltage Connections
TOP VIEW
24"
(610mm)
132" (3353mm)
Required for
condenser
cleanout
Minimum required
for filter replacement
5"
(127mm)
76"
(1930mm)
34" (864mm)
Shaded area indicates a
recommended minimum
clearance from floor
to top of unit and plenum
for component access.
131" (3327mm)
FRONT VIEW
41
DPN003146
Rev. 2
Liebert® DS™
Weights and Dimensions
Primary connection locations—Downflow, water/glycol/GLYCOOL™ 105kW (30 tons), EC fans,
semi-hermetic or standard scroll compressors
Figure 23
Digital scroll compressors
not available on 105 models
NOTES
Drawing not to scale.
Tolerance on
all piping dimensions
is ± 1/2" (13mm).
All dimensions from
A
A Rear corner of unit
FRONT VIEW
Including panels
X
SECTION A-A
O
W
WS
WR
8"
(203mm)
Y
35"
(889mm)
BLOWER
OUTLET
3-1/2"
(89mm)
ECS ECR
CD
E1
E2
B1
LV1
LV2
LV3
HUM
132" (3353mm)
FRONT OF UNIT
Point
Description
DPN002153
Rev. 1
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
W
Water/Glycol/GLYCOOL Access
125-15/16 (3199)
9 (229)
3-1/2 x 8 (89x203)
WS
Water/Glycol/GLYCOOL Supply
127-7/8 (3248)
10-1/16 (256)
2-1/8 Cu Sweat
WR
Water/Glycol/GLYCOOL Return
127-7/8 (3248)
13-1/4 (337)
2-1/8 Cu Sweat
CD
Condensate Drain
(Infrared Humidifier or No Humidifier) 1
87-3/8 (2220)
31 (787)
3/4 FPT
W/ Optional Pump
83-13/16 (2129)
30 (762)
1/2 Cu Sweat
HUM
Humidifier Supply Line
85-5/16 (2167)
32-1/2 (825)
1/4 Cu Sweat
ECS 2
Econ-O-Coil Supply
101-7/8 (2588)
29 (737)
2-5/8 Cu Sweat
ECR 2
Econ-O-Coil Return
94-9/16 (2402)
29 (737)
2-5/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
98-1/8 (2492)
31 (788)
2-1/2
E2
Electrical Connection (High-Voltage)
91 (2311)
31 (788)
2-1/2
LV1
Electrical Connection (Low-Voltage)
2 (51)
29 (737)
7/8
LV2
Electrical Connection (Low-Voltage)
2 (51)
30-7/8 (784)
7/8
LV3
Electrical Connection (Low-Voltage)
2 (51)
32 (813)
7/8
B1
Blower Outlet
4-1/2 (114)
33 (838)
77-3/8 x 30 (1965x762)
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only (four-pipe system).
3. Digital scroll compressors not available on 105 models.
4. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
5. Source: DPN002153, Rev. 1
Liebert® DS™
42
Weights and Dimensions
7.2
Downflow Models with Front and/or Rear Discharge
Figure 24
Cabinet and floor planning dimensions—Downflow, 28-42kW (8-12 tons), front and/or rear
discharge models with EC fans
Secondary Refrigerant
Piping Entrance
24" (610mm)
56-7/8" (1445mm)
Opening
33"
(838mm)
35"
(889mm)
Secondary Entrance
High-Voltage Connection(s)
Minimum required
for filter replacement.
Required for Condenser
cleanout on Water/Glycol
or GLYCOOL/Dual cool
AIR INLET OPENING
5"
(127mm)
24-3/8"
(619mm)
Opening
1-3/4"
(44mm) Handle
5/16"
(8mm) Bezels
Secondary Entrance
Low-Voltage Connections
TOP VIEW
A
Shaded area indicates a
recommended minimum
clearance from floor to top
of unit and plenum
for component access.
34"
(864mm)
76"
(1930mm)
33-1/2"
(851mm)
19"
(483mm) Air Outlet
Opening
2"
(51mm)
3-1/4"
(81mm)
B
3"
(76mm)
3"
(77mm)
33-3/8"
(848mm)
19"
(483mm)
Air Outlet
FRONT VIEW
Filters are accessible only through top of unit.
Customer Piping and Wiring Connections
1. For primary connection locations see standard submittals.
A floor stand at least 9" high is recommended if primary
connections locations are to be used.
2. Contact the factory to relocate connection locations.
43
Opening
3-1/4"
(81mm)
DPN003180
Rev. 1
Liebert® DS™
Weights and Dimensions
Figure 25
Cabinet and floor planning dimensions—Downflow, 53-77kW (15-22 tons), front and/or rear
discharge models with EC fans
Secondary Refrigerant
Piping Entrance
35"
(889mm)
24" (610mm)
80" (2032mm)
Opening
1-34"
(44mm) Handle
5/16"
(619mm) Bezel
Secondary Entrance
Low-Voltage Connections
TOP VIEW
Secondary Entrance
High-Voltage Connection(s)
Minimum required
for filter replacement.
5"
(127mm)
25-5/8"
(619mm)
Opening
AIR INLET OPENING
33"
(838mm)
Required for Condenser
cleanout on Water/Glycol or
GLYCOOL/Dual Cool.
Shaded area indicates
a recommended minimum
clearance from floor to top
of unit and plenum for
component access.
A
34"
(864mm)
76"
(1930mm)
15-1/8"
(384mm)
29-1/4"
(743mm)
Air Outlet
Opening
2"
(51mm)
FRONT VIEW
15-1/8"
(384mm)
29-5/8"
(752mm)
B
Customer Piping and Wiring Connections
1. For primary connection locations see standard submittals.
A floor stand at least 9" high is recommended if primary
connections locations are to be used.
2. Contact the factory to relocate connection locations.
15-1/8"
(384mm)
29-5/8"
(752mm)
Air Outlet
Opening
3-1/4"
(83mm)
Filters are accessible through top of unit only.
Liebert® DS™
3-1/8"
(79mm)
Air Outlet
Opening
3"
(76mm)
DPN003181
Rev. 1
44
3-1/4"
(83mm)
15-1/8"
(384mm)
29-1/4"
(743mm)
Air Outlet
Opening
REAR VIEW
Weights and Dimensions
Figure 26
Cabinet and floor planning dimensions—Downflow, air-cooled, 105kW (30 tons), front
discharge models with EC fans
Secondary Refrigerant
Piping Entrance
102-7/8" (2611mm)
Opening
33"
(838mm)
24-3/8"
(619mm)
Opening
AIR INLET OPENING
35"
(889mm)
Secondary Entrance
High-Voltage Connection(s)
1-34"
(44mm)
Handle
5/16"
(619mm)
Secondary Entrance
Bezel
Low-Voltage Connections
TOP VIEW
Required for Condenser cleanout
on Water/Glycol or GLYCOOL/Dual Cool.
132" (3353mm)
24"
(610mm)
Minimum required
for filter replacement.
5"
(127mm)
76"
(1930mm)
16-1/8"
(410mm)
16-1/8"
(410mm)
25-5/8"
(649mm)
Air Outlet
Opening
24-7/8"
(649mm)
Air Outlet
Opening
131" (3326mm)
16-1/8"
(410mm)
28-1/4"
(718mm)
Air Outlet
Opening
30-7/8"
(783mm)
57-1/2"
(1459mm)
FRONT VIEW
Filters are accessible through top of unit only.
Downflow electrical connections can be made
from top or bottom of unit.
Customer Piping and Wiring Connections
1. For primary connection locations see standard submittals.
A floor stand at least 9" high is recommended if primary
connections locations are to be used.
2. Contact the factory to relocate connection locations.
45
3/4"
(19mm)
34"
Shaded area indicates a
(864mm)
recommended minimum
clearance from floor to top of unit
and plenum for component access.
DPN003182
Rev. 1
Liebert® DS™
Weights and Dimensions
7.3
Disassembly Dimensions—Downflow Air-Cooled Systems
Figure 27
Disassembly dimensions—Downflow, air-cooled, 28-42kW (8-12 tons), scroll or digital scroll
compressors with EC fans
Filter & Electric
Box Assembly
39"
(991mm)
76"
(1930mm)
Assembled
Height
Blower & Coil
Assembly
Compressor Assembly
76"
(1930mm)
59-7/16"
(1509mm)
37"
(940mm)
33"
(838mm)
13"
(330mm)
59" (1499mm)
72" (1829mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
Dry Weight, Approximate, lb. (kg)
Air-Cooled
Dual-Cool
Compressor Assembly
490 (223)
490 (223)
Filter and Electric Box Assembly
210 (96)
210 (96)
Blower and Coil Assembly
770 (350)
920 (418)
Component
Source: DPN000802, Rev. 2
Liebert® DS™
46
DPN003133
Rev. 1
Weights and Dimensions
Figure 28
Disassembly dimensions—Downflow, air-cooled, 28-42kW (8-12 tons), semi-hermetic
compressors with EC fans
Filter & Electric
Box Assembly
39"
(991mm)
76"
(1930mm)
Assembled
Height
Blower & Coil
Assembly
Compressor Assembly
76"
(1930mm)
59-7/16"
(1509mm)
37"
(940mm)
33"
(838mm)
26"
(660mm)
59" (1499mm)
85" (2159mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003132
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Air-Cooled
Dual-Cooled
Compressor Assembly
800 (364)
800 (364)
Filter and Electric Box Assembly
210 (96)
210 (96)
Blower and Coil Assembly
770 (350)
920 (418)
Component
Source: DPN003132, Rev. 1
47
Liebert® DS™
Weights and Dimensions
Figure 29
Disassembly dimensions—Downflow, air-cooled, 53-77kW (15-22 tons), scroll or digital scroll 1
compressors
Digital scroll compressors
not available on 077 models.
Filter & Electric Box Assembly
39"
(991mm)
76"
(1930mm)
Assembled
Height
Compressor Assembly
Blower & Coil Assembly
76"
(1930mm)
59-7/16"
(1509mm)
37"
(940mm)
33"
(838mm)
DS053-DS077 =
15" (381mm)
82" (2083mm)
Assembled Length
DS053-DS077 = 97" (2464mm)
Drawing views are simplified with panels removed to show over all dimensions.
See disassembly and handling instructions in installation manual.
DPN003140
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Air-Cooled
Dual-Cool
Compressor Assembly
540 (246)
540 (246)
Filter and Electric Box Assembly
250 (114)
250 (114)
Blower and Coil Assembly
1230 (560)
1410 (641)
Component
1. Digital scroll compressors not available on 077 models.
2. Source: DPN003140, Rev. 1
Liebert® DS™
48
Weights and Dimensions
Figure 30
Disassembly dimensions—Downflow, air-cooled, 53-77kW (15-22 tons), semi-hermetic
compressors
Filter & Electric
Box Assembly
39"
(991mm)
76"
(1930mm)
Assembled
Height
Compressor Assembly
Blower & Coil
Assembly
76"
(1930mm)
59-3/8"
(1507mm)
37"
(940mm)
33"
(838mm)
26"
(660mm)
82" (2083mm)
108" (2743mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003139
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Component
Air-Cooled
Dual-Cool
Compressor Assembly
970 (441)
970 (441)
Filter and Electric Box Assembly
250 (114)
250 (114)
Blower and Coil Assembly
1230 (560)
1410 (641)
Source: DPN003139, Rev. 1
49
Liebert® DS™
Weights and Dimensions
Figure 31
Disassembly dimensions—Downflow, air-cooled, 105kW (30 tons), standard scroll
compressors
Digital scroll compressors
not available on 105 models.
Filter & Electric Box Assembly
39"
(991mm)
41-11/16"
(1059mm)
Compressor Assembly
76"
(1930mm)
Assembled Height
Blower & Coil
Assembly
76"
(1930mm)
59-7/16"
(1510mm)
37"
(940mm)
33"
(838mm)
105" (2667mm)
26"
(660mm)
131" (3327mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003148
Rev. 2
Dry Weight, Approximate Including Panels, lb (kg)
EC Fans
Air-Cooled
Dual-Cool
Compressor Assembly
830 (377)
830 (377)
Filter and Electric Box Assembly
270 (123)
270 (123)
Blower and Coil Assembly
1560 (708)
1915 (870)
Component
1. Digital scroll compressors not available on 105 models.
2. Source: DPN003148, Rev. 2
Liebert® DS™
50
Weights and Dimensions
Figure 32
Disassembly dimensions—Downflow, air-cooled, 105kW (30 tons), semi-hermetic
compressors
Filter and Electric Box Assembly
39"
(991mm)
41-11/16"
(1059mm)
Compressor
Assembly
76"
(1930mm)
Assembled
Height
Blower and Coil Assembly
76"
(1930mm)
59 7/16"
(1510mm)
37"
(940mm)
33"
(838mm)
26"
(660mm)
105" (2667mm)
DPN003147
Rev. 1
131" (3327mm)
Assembled Length
Dry Weight, Approximate, Including Panels, lb (kg)
EC Fans
Component
Compressor Assembly
Air-Cooled
Dual-Cool
950 (432)
950 (432)
Filter and Electric Box Assembly
270 (123)
270 (123)
Blower and Coil Assembly
1560 (708)
1915 (870)
Source: DPN003147, Rev. 1
51
Liebert® DS™
Weights and Dimensions
7.4
Disassembly Dimensions—Downflow, Water/Glycol/GLYCOOL™ Systems
Figure 33
Disassembly dimensions—Downflow, water/glycol/GLYCOOL, 28-42kW (8-12 tons), all
compressors
Filter & Electric
Box Assembly
39"
(991mm)
Compressor Assembly
76"
(1930mm)
Assembled
Height
Blower & Coil
Assembly
76"
(1930mm)
59-7/16"
(1509mm)
37"
(940mm)
33"
(838mm)
26"
(660mm)
59" (1499mm)
85" (2159mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003136
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Semi-Hermetic Compressor
Scroll or Digital Scroll Compressor
Water/Glycol
GLYCOOL/Dual-Cool
Water/Glycol
GLYCOOL/Dual-Cool
Compressor Assembly
950 (432)
950 (432)
800 (364)
800 (364)
Filter and Electric Box Assembly
210 (96)
210 (96)
210 (96)
210 (96)
Blower and Coil Assembly
770 (350)
920 (418)
770 (350)
920 (418)
Component
Source: DPN003136, Rev. 1
Liebert® DS™
52
Weights and Dimensions
Figure 34
Disassembly dimensions—Downflow, water/glycol/GLYCOOL™, 53-77kW (15-22 tons), all
compressors
Digital scroll compressors
not available on 077 models.
Filter & Electric Box Assembly
39"
(991mm)
76"
(1930mm)
Assembled
Height
Compressor Assembly
Blower & Coil
Assembly
76"
(1930mm)
59-7/16"
(1509mm)
37"
(940mm)
26"
(660mm)
33"
(838mm)
82" (2083mm)
108" (2743mm)
Assembled Length
DPN003143
Rev. 1
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
Dry Weight, Approximate, Including Panels, lb (kg)
Semi-Hermetic Compressor
Component
Compressor Assembly
Water/Glycol GLYCOOL/Dual-Cool
1270 (578)
1270 (578)
Scroll or Digital Scroll Compressor 1
Water/Glycol
GLYCOOL/Dual-Cool
840 (382)
840 (382)
Filter and Electric Box Assembly
250 (114)
250 (114)
250 (114)
250 (114)
Blower and Coil Assembly
1230 (560)
1410 (641)
1230 (560)
1410 (641)
1. Digital scroll compressors not available on 077 models.
2. Source: DPN003143, Rev. 1
53
Liebert® DS™
Weights and Dimensions
Figure 35
Disassembly dimensions—Downflow, water/glycol/GLYCOOL™ 105kW (30 tons),
semi-hermetic or standard scroll compressors
Digital scroll compressors
not available on 105 models
Filter & Electric Box Assembly
39"
(991mm)
41-11/16"
(1059mm)
Compressor Assembly
76" (1930mm)
Assembled
Height
Blower & Coil
Assembly
76"
(1930mm)
59-7/16"
(1510mm)
37"
(940mm)
33"
(838mm)
26"
(660mm)
105" (2667mm)
131" Assembled Length
(3327mm)
DPN003150
Rev. 1
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
Dry Weight, Approximate, Including Panels, lb (kg)
Semi-Hermetic Compressor
Standard Scroll Compressor 1
Water/Glycol
GLYCOOL/Dual-Cool
Water/Glycol
GLYCOOL/Dual-Cool
Compressor Assembly
1320 (600)
1320 (600)
1200 (545)
1200 (545)
Filter and Electric Box Assembly
270 (123)
270 (123)
270 (123)
270 (123)
Blower and Coil Assembly
1560 (708)
1915 (870)
1560 (708)
1915 (870)
Component
1. Digital scroll compressors not available on 105 models.
2. Source: DPN003150, Rev. 2
Liebert® DS™
54
Weights and Dimensions
7.5
Upflow Model Dimensions and Primary Connections—Air-Cooled Systems with
EC Fans
Figure 36
Cabinet and floor planning dimensions—Upflow, air-cooled, 28-42kW (8-12 tons), scroll or
digital scroll compressors with EC fans
Alternate refrigerant
piping entrance
33"
(838mm)
34-3/4"
(883mm)
5/16"
(8mm)
Bezel
High-Voltage
Connection(s)
3-1/24"
(90mm)
1-3/4"
(44mm)
Handle
TOP VIEW
Space required for EC fan
plenum (shipped separately)
dependent on height of plenum
ordered.
Low-Voltage
Connection(s)
73-1/16" 1856mm)
75"
(1924mm)
36"
(914mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
1-3/4"
(44mm)
72" (1829mm)
FRONT VIEW
Notes:
1. Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
2. EC fan plenum is not shown. EC fans and plenum are shipped separately. DPN003495
Rev. 0
See DPN002747 for unit dimensions with EC fans plenum mounted
55
Liebert® DS™
Weights and Dimensions
Figure 37
Primary connection locations—Upflow, air-cooled, 28-42kW (8-12 tons), scroll or digital scroll
compressors with EC fans
All dimensions from
rear corner of unit
X
including panels
10-1/8"
(257mm)
4-1/8" (105mm)
NOTES
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
3. Field-routed alternatives for refrigerant
gas and liquid line connection points.
4. See submittal page DPN002747
for plenum dimensional data.
3. R1
R2
35"
(889mm)
ECR
ECS
HUM
CPD
O
4.
L1 L2 G1 G2
4"
(102mm)
Y
11-13/16"
(300mm)
3.
E1
LV2
E2
LV1
LV3
73" (1854mm)
Front of Unit
TOP VIEW OF UNIT
6"
(152mm)
17-3/16"
(437mm)
R3
17-1/16"
(434mm)
3.
L1 L2 G1 G2
CGD*
14-1/4"
(362mm)
15-7/8"
(403mm)
3-7/8"
(98mm)
CGD*
Factory Location
DPN002740
Rev. 0
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
LEFT SIDE SECTION VIEW OF UNIT
Description
Point
R1
3
Refrigerant Access (Top)
R2
3
Refrigerant Access (Bottom)
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
60-5/8 (1539)
2-13/16 (71)
10-1/8 x 4-1/8 (257 x 105)
63 (1600)
13-13/16 (351)
16-7/16 x 4 (418 x 102)
L1
Liquid Line System 1
79-3/16 (2011)
16-3/4 (425)
1/2 Cu Sweat
L2
Liquid Line System 2
76-1/2 (1943)
16-3/4 (425)
1/2 Cu Sweat
G1
Hot Gas Discharge 1
73-7/8 (1876)
16-5/8 (422)
5/8 Cu Sweat
G2
Hot Gas Discharge 2
70-1/8 (1780)
16-5/8 (422)
5/8 Cu Sweat
R3
Refrigerant Access (Side)
—
—
6 x 17-3/16 (152 x 437)
CGD 1
Condensate Gravity Drain
—
—
3/4 FPT
CPD
Condensate Pump Discharge (Optional)
56-1/4 (1429)
11-1/8 (283)
1/2 Cu Sweat
HUM
Humidifier Supply Line
56-1/4 (1429)
9-1/8 (233)
1/4 Cu Sweat
56 (1423)
7-5/16 (186)
1-5/8 Cu Sweat
3
ECS 2
2
Econ-O-Coil Supply
56 (1423)
4-1/2 (114)
1-5/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
52-3/8 (1331)
29-15/16 (760)
2-1/2
E2
Electrical Connection (High-Voltage)
47-3/8 (1204)
29-15/16 (760)
2-1/2
LV1
Electrical Connection (Low-Voltage)
8-1/8 (207)
29-9/16 (751)
7/8
LV2
Electrical Connection (Low-Voltage)
8-1/8 (207)
31 (787)
7/8
LV3
Electrical Connection (Low-Voltage)
8-1/8 (207)
32-7/16 (824)
7/8
ECR
Econ-O-Coil Return
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap.
Do not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must
comply with all local codes.
2. Supplied on dual cool systems only.
3. Source: DPN002740, Rev. 0
Liebert® DS™
56
Weights and Dimensions
Figure 38
Cabinet and floor planning dimensions—Upflow, air-cooled, 28-42kW (8-12 tons),
semi-hermetic compressor models with EC fans
Alternate refrigerant
piping entrance
33"
(838mm)
34-3/4"
(883mm)
5/16"
(8mm)
Bezel
High-Voltage
Connection(s)
3-1/4"
(83mm)
1-9/16" TOP VIEW
(40mm)
Handle
Space required for EC fan
plenum (shipped separately)
dependent on height of plenum
ordered.
Low-Voltage
Connection(s)
86-1/16" (2186mm)
76"
(1930mm)
Shaded area indicates a
required minimum clearance
from floor to top of unit and
plenum for component access.
84-15/16" (2158mm)
2"
(50mm)
FRONT VIEW
Notes:
1. Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
2. EC fan plenum is not shown. EC fans and plenum are shipped separately.
See DPN002747 for unit dimensions with EC fans plenum mounted
57
36"
(914mm)
DPN003494
Rev. 0
Liebert® DS™
Weights and Dimensions
Figure 39
Primary connection locations—Upflow air-cooled, 28-42kW, semi-hermetic compressor
models with EC fans
All dimensions from
rear corner of unit
including panels
X
22-1/2"
(572mm)
R1
15-3/16"
(386mm)
35"
NOTES:
(889mm)
1. Drawing not to scale.
2. Tolerance on all piping dimensions
4"
is ± 1/2" (13mm).
(102mm)
3. Field-routed alternatives for refrigerant
3.
gas and liquid line connection points.
3.
R2
O
ECR
ECS
HUM
CPD
4.
L1 L2 G1 G2
16-7/16"
(418mm)
Y
E1
4. See submittal page DPN002747
for plenum dimensional data.
LV1
LV2 LV3
E2
86" (2184mm)
TOP VIEW OF UNIT
6"
(152mm)
R3
20-1/16"
(509mm)
3.
17-3/16"
(437mm)
Front of Unit
G1 G2
L1 L2
CGD*
14-1/4"
(362mm)
3-7/8"
(98mm)
CGD*
Factory Location
FRONT SECTION VIEW OF UNIT
15-7/8"
(403mm)
(Left Front Panel Not Shown)
LEFT SIDE SECTION VIEW OF UNIT
Description
Point
R1
R2
3
Refrigerant Access (Top)
3
Refrigerant Access (Bottom)
X
in. (mm)
DPN002739
Rev. 0
Y
in. (mm)
Connection Size / Opening
in. (mm)
60-11/16 (1542)
1-7/8 (48)
22-1/2 x 15-3/16 (572 x 386)
63 (1600)
13-13/16 (351)
16-7/16 x 4 (102 x 418)
L1
Liquid Line System 1
79-3/16 (2011)
16-3/4 (425)
1/2 Cu Sweat
L2
Liquid Line System 2
76-1/2 (1943)
16-3/4 (425)
1/2 Cu Sweat
G1
Hot Gas Discharge 1
73-7/8 (1876)
16-3/4 (425)
5/8 Cu Sweat
G2
Hot Gas Discharge 2
70-1/8 (1780)
16-3/4 (425)
5/8 Cu Sweat
R3
Refrigerant Access (Side)
—
—
6 x 17-3/16 (152 x 437)
3
CGD 1
Condensate Gravity Drain
—
—
3/4 FPT
CPD
Condensate Pump Discharge (Opt)
56-1/4 (1429)
11-1/8 (283)
1/2 Cu Sweat
HUM
Humidifier Supply Line
56-1/4 (1429)
9-1/8 (233)
1/4 Cu Sweat
ECS 2
Econ-O-coil Supply
56 (1423)
7-5/16 (186)
1-5/8 Cu Sweat
ECR**
Econ-O-coil Return
56 (1423)
4-1/2 (114)
1-5/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
52-3/8 (1331)
29-15/16 (760)
2-1/2
E2
Electrical Connection (High-Voltage)
47-3/8 (1204)
29-15/16 (760)
2-1/2
LV1
Electrical Connection (Low-Voltage)
8-1/8 (207)
29-9/16 (751)
7/8
LV2
Electrical Connection (Low-Voltage)
8-1/8 (207)
31 (787)
7/8
LV3
Electrical Conn. (Low Volt)
8-1/8 (207)
32-7/16 (824)
7/8
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only.
3. Source: DPN002739, Rev. 0
Liebert® DS™
58
Weights and Dimensions
Figure 40
Cabinet and floor planning dimensions—Upflow, air-cooled, 53-77kW (15-22 tons), scroll or
digital scroll compressor models with EC fans
Digital scroll compressors not
available on 077 models.
Alternate Refrigerant
Piping Entrance
33"
(838mm)
5/16"
(8mm)
Bezel
34-3/4"
(883mm)
High-Voltage
Connection(s)
3-1/4"
(83mm)
1-3/4"
(44mm)
Handle
Space required for EC fan
plenum (shipped separately)
dependent on height of plenum
ordered.
TOP VIEW
Low-Voltage
Connection(s)
98" (2489mm)
76"
(1930mm)
36"
(914mm)
Shaded area indicates a
required minimum clearance
from floor to top of unit and
plenum for component access.
96-15/16" (2462mm)
2"
(50mm)
FRONT VIEW
Notes:
1. Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
2. EC fan plenum is not shown. EC fans and plenum are shipped separately.
See DPN002748 for unit dimensions with EC fans plenum mounted
59
DPN003498
Rev. 0
Liebert® DS™
Weights and Dimensions
Figure 41
Primary connection locations—Upflow, air cooled, 53-77kW (15-22 tons) with EC fans, scroll or
digital scroll compressor models with EC fans
Digital scroll compressors
not available on 105 models.
NOTES
1. Drawing not to scale.
2. Tolerance on all piping
dimensions is ±1/2" (13mm).
All dimensions from
rear corner of unit
including panels
12"
(305mm)
4" (102mm)
R2
3. Field-routed alternatives for
refrigerant gas and liquid
line connections.
4. See submittal page DPN002748 for
plenums dimensions.
3.
12-13/16"
(325mm)
O
ECR
ECS
HUM
CPD
3. R1
4
L1 L2G1G2
4"
(102mm)
35"
(889mm)
X
LV1
LV2
LV3
E1
E2
Y
98" (2489mm)
TOP VIEW OF UNIT
Front of Unit
6" (152mm)
R3
17-3/16"
(437mm)
3.
CGD*
17-1/16"
(433mm)
L1 L2G1G2
14-1/4"
(362mm)
15-7/8"
(403mm)
3-7/8"
(98mm)
Factory Location
CGD*
FRONT SECTION VIEW OF UNIT
LEFT SIDE SECTION VIEW OF UNIT
DPN002743
Rev. 0
(Left Front Panel Not Shown)
* Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed
condensate trap. Do not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system
materials. The drain line must comply with all local codes.
** Supplied on dual cool systems only
Description
Point
R1 3
R2 3
Refrigerant Access (Top)
Refrigerant Access (Bottom)
L1
L2
G1
G2
R3 3
CGD 1
CPD
HUM
ECS 1
ECR 1
E1
E2
LV1
LV2
LV3
Liquid Line System 1
Liquid Line System 2
Hot Gas Discharge 1
Hot Gas Discharge 2
Refrigerant Access (Side)
Condensate Gravity Drain
Condensate Pump Discharge (Optional)
Humidifier Supply Line
Econ-O-Coil Supply
Econ-O-Coil Return
Electrical Connection (High-Voltage)
Electrical Connection (High-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
X
in. (mm)
83-5/8 (2124)
82-3/4 (2102)
94-11/16 (2405)
91-7/8 (2334)
88-3/4 (2254)
85-9/16 (2173)
—
—
79-5/16 (2015)
79-5-16 (2015)
78-5/8 (1998)
78-5/8 (1998)
78-1/8 (1984)
74-3/8 (1889)
2-5/8 (66)
2-5/8 (66)
2-5/8 (66)
Y
in. (mm)
Connection Size / Opening
in. (mm)
2 (51)
12 x 4 (305 x 102)
14-3/4 (374)
12-3/16 x 4 (310 x 102)
53kW (15 Tons) / 70 and 77kW (20 and 22 Tons)
16-3/4 (425)
16-3/4 (425)
16-3/8 (416)
16-3/8 (416)
—
—
11-7/8 (302)
9-7/8 (251)
7-7/8 (200)
4-5/8 (117)
30 (762)
30 (762)
28-9/16 (726)
30 (762)
31-7/16 (799)
1/2 / 5/8 Cu Sweat
1/2 / 5/8 Cu Sweat
7/8 / 1-1/8 Cu Sweat
7/8 / 1-1/8 Cu Sweat
6 x 17-3/16 (152 x 437)
3/4 FPT
1/2 Cu Sweat
1/4 Cu Sweat
2-1/8 Cu Sweat
2-1/8 Cu Sweat
2-1/2
2-1/2
7/8
7/8
7/8
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cooling systems only
3. Source: DPN002743, Rev. 0
Liebert® DS™
60
Weights and Dimensions
Figure 42
Cabinet and floor planning dimensions—Upflow, air-cooled 53-77kW (15-22 tons),
semi-hermetic compressor models with EC fans
Alternate Refrigerant
Piping Entrance
33"
(838mm)
34-3/4"
(883mm)
5/16"
(8mm)
Bezel
High-Voltage
Connection(s)
3-1/4"
(83mm)
1-3/4"
(44mm)
Handle
TOP VIEW
Low-Voltage
Connection(s)
109" (2769mm)
Space required for EC fan
plenum (shipped separately)
dependent on height of plenum
ordered.
76"
(1930mm)
36"
(914mm)
108" (2743mm)
2"
(50mm)
FRONT VIEW
Notes:
1. Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
2. EC fan plenum is not shown. EC fans and plenum are shipped separately.
See DPN002748 for unit dimensions with EC fans plenum mounted
61
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
DPN003497
Rev. 0
Liebert® DS™
Weights and Dimensions
Figure 43
Primary connection locations—Upflow, air-cooled, 53-77kW, semi-hermetic compressor
models with EC fans
All dimensions from
rear corner of unit
including panels
22-1/2"
(572mm)
NOTES:
1. Drawing not to scale.
15-3/16"
2. Tolerance on all piping dimensions
35"
(386mm)
is ± 1/2" (13mm).
(889mm)
3. Field-routed alternatives for
4"
refrigerant gas and liquid
(102mm) 3.
line connections.
X
O
R1 ECR
3.
R2
ECS
HUM
CPD
4.
L1 L2 G1 G2
16-7/16"
(418mm)
4. See submittal page DPN002748
for plenum dimension.
Y
E1 E2
LV1
LV2
LV3
109" 2760mm)
6"
(152mm)
Front of Unit
TOP VIEW OF UNIT
R3
17-3/16"
(437mm)
3.
CGD*
14-1/4"
(362mm)
3-7/8"
(98mm)
20-1/16"
(509mm)
15-7/8"
(403mm)
LEFT SIDE SECTION VIEW OF UNIT
G1 G2
LV1 LV2
CGD*
FACTORYLOCATION
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
Description
Point
R1
3
Refrigerant Access (Top)
R2
3
Refrigerant Access (Bottom)
DPN002742
Rev. 0
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
83-3/4 (2127)
1-7/8 (48)
22-1/2 x 15-3/16 (572 x 386)
86 (2184)
13-7/8 (352)
16-7/16 x 4 (418 x 102)
53kW (15 Tons) / 70 and 77kW (20 and 22 Tons)
L1
Liquid Line System 1
97 (2464)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
L2
Liquid Line System 2
93-5/16 (2370)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
G1
Hot Gas Discharge 1
90-5/8 (2302)
16-5/8 (422)
7/8 / 1-1/8 Cu Sweat
G2
Hot Gas Discharge 2
88 (2235)
16-5/8 (422)
7/8 / 1-1/8 Cu Sweat
R3
Refrigerant Access (Side)
—
—
6 x 17-3/16 (152 x 437)
CGD 1
Condensate Gravity Drain
—
—
3/4 FPT
CPD
Condensate Pump Discharge (Optional)
79-5/16 (2015)
11-7/8 (302)
1/2 Cu Sweat
HUM
Humidifier Supply Line
79-5/16 (2015)
9-7/8 (251)
1/4 Cu Sweat
Econ-O-Coil Supply
78-5/8 (1998)
7-7/8 (200)
2-1/8 Cu Sweat
3
ECS
2
ECR
2
Econ-O-Coil Return
78-5/8 (1998)
4-5/8 (117)
2-1/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
78-1/8 (1984)
30 (762)
2-1/2
E2
Electrical Connection (High-Voltage)
74-3/8 (1889)
30 (762)
2-1/2
LV1
Electrical Connection (Low-Voltage)
2-5/8 (66)
28-9/16 (726)
7/8
LV2
Electrical Connection (Low-Voltage)
2-5/8 (66)
30 (762)
7/8
LV3
Electrical Connection (Low-Voltage)
2-5/8 (66)
31-7/16 (799)
7/8
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only.
3. Source: DPN002742, Rev. 0
Liebert® DS™
62
Weights and Dimensions
Figure 44
Cabinet and floor planning dimensions—Upflow, air-cooled, 105kW (30 tons), all compressor
models with EC fans
Digital scroll compressors
not available on 105 models.
Alternate Refrigerant
Piping Entrance
33"
(838mm)
34-3/4"
(882mm)
High-Voltage
Connection(s)
3-3/16"
(81mm)
Typical
Space required for EC fan plenum
(shipped separately) dependent on
height of plenum ordered.
1-3/4"
(44mm)
Handle
TOP VIEW
Low-Voltage
Connection(s)
5/16"
(8mm)
Bezel
132-1/16" (3354mm)
76"
(1931mm)
2"
(51mm)
Shaded area indicates a
recommended minimum
clearance from floor to
ceiling for component access.
130-15/16" (3325mm)
FRONT VIEW
Note:
1. Front air return unit shown. For rear return unit, in addition to front
service area shown, also include 25" (635mm) on one side of unit
for access to rear return filter box. See DPN001196.
2. EC fans plenum is not shown. EC fans and plenum are shipped
separately. See DPN002749 for unit dimensions with EC fans
plenum mounted
63
36"
(914mm)
DPN003500
Rev. 0
Liebert® DS™
Weights and Dimensions
Figure 45
Primary connection locations—Upflow, air-cooled 105kW (30 tons), all compressor models
with EC fans
Digital scroll compressors
not available on 105 models.
All dimensions from
rear corner of unit
including panels
22-1/2"
(572mm)
R1
15-3/16"
(386mm)
NOTES
35"
1. Drawing not to scale.
(889mm)
2. Tolerance on all piping
dimensions is ±1/2" (13mm).
4"
(102mm)
3. Field-routed alternatives for
refrigerant gas and liquid
line connections.
4. See submittal page DPN002749 for
plenums dimensions.
3. R2
X
O
ECR
ECS
HUM
CPD
4.
L1L2 G1G2
16-7/16"
(418mm)
E1
3.
LV1
LV2
E2
LV3
LV3
Y
132" (3353mm)
Front of Unit
TOP VIEW OF UNIT
6" (152mm)
R3
17-3/16"
(437mm)
3.
3-7/8"
(98mm)
14-1/4"
(362mm)
15-7/8"
(403mm)
CGD*
20-1/16"
(509mm)
G1G2
L1L2
CGD*
Factory Location
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
LEFT SIDE SECTION VIEW OF UNIT
Description
Point
DPN002745
Rev. 0
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
R1
3
Refrigerant Access (Top)
106-7/8 (2715)
1-7/8 (48)
22-1/2 x 15-3/16 (572mm x 386mm)
R2
3
Refrigerant Access (Bottom)
109-1/8 (2772)
13-7/8 (352)
16-7/16 x 4 (418mm x 102mm)
L1
Liquid Line System 1
121-3/4 (3092)
16-3/4 (425)
5/8 Cu Sweat
L2
Liquid Line System 2
118-1/8 (3000)
16-3/4 (425)
5/8 Cu Sweat
G1
Hot Gas Discharge 1
118-1/4 (3004)
14-1/4 (362)
1-1/8 Cu Sweat
G2
Hot Gas Discharge 2
115-5/8 (2937)
14-1/4 (362)
1-1/8 Cu Sweat
—
—
6 x 17-3/16 (152 x 437mm)
R3
Refrigerant Access (Side)
3
1
CGD
CPD
HUM
ECS
2
ECR
2
—
—
3/4 FPT
Condensate Pump Discharge (Optional)
Condensate Gravity Drain
102-3/8 (2600)
13-5/8 (346)
1/2 Cu Sweat
Humidifier Supply Line
101-1/8 (2569)
13-1/8 (333)
1/4 Cu Sweat
Econ-O-Coil Supply
101-1/8 (2569)
10-1/4 (260)
2-5/8 Cu Sweat
Econ-O-Coil Return
101-1/8 (2569)
5-1/4 (133)
2-5/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
101-5/8 (2581)
30 (762)
2-1/2
E2
Electrical Connection (High-Voltage)
97-7/8 (2486)
30 (762)
2-1/2
LV1
Electrical Connection (Low-Voltage)
34-1/8 (867)
30-1/4 (769)
7/8
LV2
Electrical Connection (Low-Voltage)
34-1/8 (867)
31-3/4 (807)
7/8
LV3
Electrical Connection (Low-Voltage)
32-5/8 (829)
28-15/16 (734)
7/8
LV4
Electrical Connection (Low-Voltage)
32-5/8 (829)
30-7/16 (772)
7/8
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only.
3. Digital scroll compressors not available on 105 models.
4. Source: DPN002745, Rev. 0
Liebert® DS™
64
Weights and Dimensions
7.6
Upflow Model Dimensions and Primary Connections—Water/Glycol/GLYCOOL™
Cooled Systems
Figure 46
Cabinet and floor planning dimensions—Upflow, water/glycol/GLYCOOL, 28-42kW (8-12 tons),
all compressor models with EC fans
Condenser Cleanout Access
33"
(838mm)
34-3/4"
(883mm)
Alternate Condenser Fluid
Piping Entrance
High-Voltage
Connection(s)
3-1/4"
(83mm)
5/16"
(8mm)
Bezel
1-3/4"
(44mm)
Handle
Space required for EC fan
plenum (shipped separately)
dependent on height of plenum
ordered.
24"
(610mm)
TOP VIEW
Required for
Condenser Cleanout
Low-Voltage
Connection(s)
86-1/16" (2186mm)
76"
(1930mm)
36"
(914mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
2"
(50mm)
84-15/16" (2158mm)
FRONT VIEW
Notes:
1. Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
2. EC fan plenum is not shown. EC fans and plenum are shipped separately.
See DPN002747 for unit dimensions with EC fans plenum mounted
65
DPN003496
Rev. 0
Liebert® DS™
Weights and Dimensions
Primary connection locations—Upflow, water/glycol/GLYCOOL™, 28-42kW, all compressor
models with EC fans
Figure 47
All dimensions from rear corner
of unit including panels
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
3. Field-routed alternatives for
water/glycol connections.
4. See submittal page DPN002747
for plenum dimension.
W1, W2 3.
8"
(203mm)
2-7/8"
35" (73mm)
(889mm)
17-3/16"
(437mm)
Y
3-1/2"
(89mm)
3-7/8"
(98mm)
LV2
E1 E2
86" 2184mm)
3.
O
4
6"
(152mm)
W3
WS
WR
X
ECR
ECS
HUM
CPD
LV1
LV3
Front of Unit
TOP VIEW OF UNIT
CGD*
14-1/4"
(362mm)
15-7/8"
(403mm)
LEFT SIDE SECTION VIEW OF UNIT
CGD*
FRONT SECTION VIEW OF UNIT DPN002741
(Left Front Panel Not Shown)
Rev. 1
Connection Size / Opening
in. (mm)
Description
X
in. (mm)
Y
in. (mm)
28-35kW (8-10 Tons) /
42kW (12 Tons)
Water/Glycol/GLYCOOL Access (Bottom)
79-15/16 (2030)
9 (229)
3-1/2 x 8 (89 x 203)
Point
W1
W2
3
Water/Glycol/GLYCOOL Access (Top)
79-15/16 (2030)
9 (229)
3-1/2 x 8 (89 x 203)
W3
3
Water/Glycol/GLYCOOL Access (Side)
—
—
6 x 17-3/16 (152 x 437)
WS
3
Water/Glycol/GLYCOOL Supply
—
—
1-5/8 / 2-1/8 Cu Sweat
WR
3
—
—
1-5/8 / 2-1/8 Cu Sweat
ECS 2
Econ-O-Coil Supply
Water/Glycol/GLYCOOL Return
56 (1423)
7-5/16 (186)
1-5/8 / 2-1/8 Cu Sweat
ECR
2
Econ-O-Coil Return
56 (1423)
4-1/2 (114)
1-5/8 / 2-1/8 Cu Sweat
CGD
1
Condensate Gravity Drain
—
—
3/4 FPT
CPD
Condensate Pump Discharge (Optional)
56-1/4 (1429)
11-1/8 (282)
1/2 Cu Sweat
HUM
Humidifier Supply Line
56-1/4 (1429)
9-1/8 (232)
1/4 Cu Sweat
E1
Electrical Connection (High-Voltage)
52-3/8 (1331)
29-15/16 (760)
2-1/2
E2
Electrical Connection (High-Voltage)
47-3/8 (1204)
29-15/16 (760)
2-1/2
LV1
Electrical Connection (Low-Voltage)
8-1/8 (207)
29-9/16 (751)
7/8
LV2
Electrical Connection (Low-Voltage)
8-1/8 (207)
31 (787)
7/8
LV3
Electrical Connection (Low-Voltage)
8-1/8 (207)
32-7/16 (824)
7/8
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only (four-pipe system).
3. Source: DPN002741, Rev. 1
Liebert® DS™
66
Weights and Dimensions
Figure 48
Dimensions—Upflow, water/glycol/GLYCOOL™, 53-77kW (15-22 tons), all compressor models
with EC fans
Digital scroll compressors
not available on 077 models.
Condenser Cleanout Access
Space required for EC fan plenum
(shipped separately) dependent on
height of plenum ordered
33"
(838mm)
5/16"
(8mm)
Bezels
35"
(889mm)
Alternate Refrigerant
Piping Entrance
High-Voltage Connection(s)
3-1/4"
(83mm)
1-3/4" TOP
(44mm)
Handle
Required for
condenser cleanout
24"
(610mm)
VIEW
Low-Voltage
Connection(s)
109" (2769mm)
76"
(1930mm)
36"
Shaded area indicates a
(914mm)
recommended minimum
clearance from floor to top
of unit for component access.
2"
(50mm)
108" (2743mm)
FRONT VIEW
NOTES
1. Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
2. EC fans plenum is not shown. EC fans and plenum are shipped separately.
See DPN002748 for unit dimensions with EC fans plenum mounted
67
DPN003499
Rev. 0
Liebert® DS™
Weights and Dimensions
Primary connection locations—Upflow, water/glycol/GLYCOOL™, 53-77kW (15-22 tons), all
compressor models with EC fans
Figure 49
Digital scroll compressors
not available on 077 models.
All dimensions from
rear corner of unit
including panels
8"
(203mm)
O
ECR
ECS
HUM
CPD
W1, W2
NOTES
35"
1. Drawing not to scale.
(889mm)
2. Tolerance on all piping
dimensions
is ±1/2" (13mm).
3-1/2"
3. Field-routed alternatives for
(89mm)
water/glycol connections.
4. See submittal page DPN002748
for plenum dimensions.
X
3.
4.
2-7/8"
(73mm)
Y
E1 E2
LV1
LV2
LV3
109" (2769mm)
Front of Unit
TOP VIEW OF UNIT
6" (152mm)
17-3/16"
(437mm)
3-7/8"
(98mm)
W3
WS
WR
3. CGD*
14-1/4"
(362mm)
15-7/8"
(403mm)
CGD*
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
DPN002744
Rev. 0
LEFT SIDE SECTION VIEW OF UNIT
* Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed
condensate trap. Do not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system
materials. The drain line must comply with all local codes. Supplied on dual cool systems only.
** Supplied on dual cool systems only.
Point
Description
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
3-1/2 x 8 (89 x 203)
W1
3
Water/Glycol/GLYCOOL Access (Bottom)
102-15/16 (2615)
9 (229)
W2
3
Water/Glycol/GLYCOOL Access (Top)
102-15/16 (2615)
9 (229)
3-1/2 x 8 (89 x 203)
W3
3
Water/Glycol/GLYCOOL Access (Side)
—
—
6 X 17-3/16 (152 x 437)
WS
3
Water/Glycol/GLYCOOL Supply
—
—
2-1/8 Cu Sweat
WR
3
Water/Glycol/GLYCOOL Return
—
—
2-1/8 Cu Sweat
1
CGD
CPD
HUM
ECS
2
ECR
2
—
—
3/4 Fpt
Condensate Pump Discharge (Optional)
Condensate Gravity Drain
79-5/16 (2015)
11-7/8 (302)
1/2 Cu Sweat
Humidifier Supply Line
79-5/16 (2015)
9-7/8 (251)
1/4 Cu Sweat
Econ-O-Coil Supply
78-5/8 (1998)
7-7/8 (200)
2-1/8 Cu Sweat
Econ-O-Coil Return
78-5/8 (1998)
4-5/8 (117)
2-1/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
78-1/8 (1984)
30 (762)
2-1/2
E2
Electrical Connection (High-Voltage)
74-3/8 (1889)
30 (762)
2-1/2
LV1
Electrical Connection (Low-Voltage)
2-5/8 (66)
28-9/16 (726)
7/8
LV2
Electrical Connection (Low-Voltage)
2-5/8 (66)
30 (762)
7/8
LV3
Electrical Connection (Low-Voltage)
2-5/8 (66)
31-7/16 (799)
7/8
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only.
3. Digital scroll compressors not available on 077 models.
4. Source: DPN002744, Rev. 0
Liebert® DS™
68
Weights and Dimensions
Figure 50
Cabinet and floor planning dimensions—Upflow, water/glycol/GLYCOOL™,105kW (30 tons), all
compressor models, with EC fans
Digital scroll compressors
not available on 105 models.
Alternate Refrigeration
Piping Entrance
33"
(838mm)
34-3/4"
(883mm)
Alternate Condenser
Fluid Piping Entrance
High-Voltage
Connection(s)
3-3/16"
(81mm)
Typical
5/16"
(8mm)
Bezel
Low-Voltage
Connection(s)
1-3/4" TOP VIEW
(44mm)
Handle
Space required for EC Fan Plenum
(shipped separately) dependent on
height of plenum ordered
24"
(610mm)
Required for
condenser cleanout
132-1/16" (3354mm)
76"
(1931mm)
34"
(864mm)
1-15/16"
(50mm)
130-15/16" (3325mm)
FRONT VIEW
NOTES
1. Front air return unit shown. For rear return unit, in addition to front
service area shown, also include 25" (635mm) on one side of unit
for access to rear return filter box. See DPN001196.
2. EC fans plenum not shown. EC fans and plenum shipped separately.
See DPN002749 for plenum dimensions.
69
Shaded area indicates a
recommended minimum
clearance from floor to top
of unit and plenum for component
access.
DPN003501
Rev. 0
Liebert® DS™
Weights and Dimensions
Primary connection locations—Upflow, water/glycol/GLYCOOL™, 105kW (30 tons), all
compressor models with EC fans
Figure 51
Digital scroll compressors
not available on 105 models.
All dimensions from
rear corner of unit
including panels
8"
(203mm)
W1, W2 3.
35"
(889mm)
NOTES
1. Drawing not to scale.
2. Tolerance on all piping
3-1/2"
dimensions is ±1/2" (13mm).
X
O
ECR
ECS
HUM
CPD
4.
2-7/8"
(73mm)
E1
E2
(89mm)
LV2
3. Field-routed alternatives for
water/glycol connections.
4. See submittal page DPN002746 for
plenums dimensions.
LV1 LV3
Y
LV4
132" (3353mm)
Front of Unit
TOP VIEW OF UNIT
6" (152mm)
W3
WS
WR
3.
CGD*
17-3/16"
(437mm)
14-1/4"
(362mm)
15-7/8"
(403mm)
3-7/8"
(98mm)
CGD*
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
DPN002746
Rev. 0
LEFT SIDE SECTION VIEW OF UNIT
Description
Point
W1
X
In. (mm)
Y
In. (mm)
Connection Size / Opening
In. (mm)
3
Water/Glycol/GLYCOOL Access (Bottom)
126-1/8 (3204)
9 (229)
3-1/2 x 8 (89 x 203)
W2
3
Water/Glycol/GLYCOOL Access (Top)
126-1/8 (3204)
9 (229)
3-1/2 x 8 (89 x 203)
W3
3
Water/Glycol/GLYCOOL Access (Side)
—
—
6 x 17-3/16 (152 x 437)
WS
3
Water/Glycol/GLYCOOL Supply
—
—
2-1/8 Cu Sweat
WR
3
Water/Glycol/GLYCOOL Return
—
—
2-1/8 Cu Sweat
CGD 1
Condensate Gravity Drain
—
—
3/4 FPT
CPD
Condensate Pump Discharge (Opt)
102-3/8 (2600)
13-5/8 (346)
1/2 Cu Sweat
HUM
Humidifier Supply Line
101-1/8 (2569)
13-1/8 (333)
1/4 Cu Sweat
2
Econ-O-Coil Supply
101-1/8 (2569)
10-1/4 (260)
2-5/8 Cu Sweat
ECR 2
Econ-O-Coil Return
101-1/8 (2569)
5-1/4 (133)
2-5/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
101-5/8 (2581)
30 (762)
2-1/2
E2
Electrical Connection (High-Voltage)
97-7/8 (2486)
30 (762)
2-1/2
LV1
Electrical Connection (Low-Voltage)
34-1/8 (867)
30-1/4 (769)
7/8
LV2
Electrical Connection (Low-Voltage)
34-1/8 (867)
31-3/4 (807)
7/8
LV3
Electrical Connection (Low-Voltage)
32-5/8 (829)
28-15/16 (734)
7/8
LV4
Electrical Connection (Low-Voltage)
32-5/8 (829)
30-7/16 (772)
7/8
ECS
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only.
3. Source: DPN002746, Rev. 0
Liebert® DS™
70
Weights and Dimensions
7.7
Upflow Model Dimensions and Primary Connections—Air-Cooled Systems with
Forward-Curved Blowers
Figure 52
Dimensions—Upflow, air-cooled, 28-42kW (8-12 tons), scroll or digital scroll compressor
models with forward-curved blowers
Alternate Refrigerant
Piping Entrance
33"
(838mm)
5/16"
(8mm)
Bezel
35"
(889mm)
Minimum required
for blower replacement
High-Voltage
Connection(s)
1-1/2"
(38mm)
1-3/4"
(44mm) TOP
Handle VIEW
Low-Voltage
Connection(s)
73" (1854mm)
24"
(610mm)
76"
(1930mm)
34"
(864mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
2"
(51mm)
72" (1829mm)
FRONT VIEW
Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
71
DPN003154
Rev. 1
Liebert® DS™
Weights and Dimensions
Figure 53
Primary connection locations—Upflow air-cooled 28-42kW (8-12 tons) scroll compressor
models with foward-curved blowers
All dimensions from rear corner
of unit including panels
X
10-1/8"
(257mm)
1. Drawing not to scale.
4-1/8" (105mm)
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
3. Field-routed alternatives for refrigerant
gas and liquid line connection points.
4" (102mm)
4. Unit with forward-curved blower shown.
See submittal page DPN001120 for
35"
blower outlet and deck dimensions. (889mm)
3.
3.
R1
ECR
ECS
HUM
CPD
O
BLOWER
OUTLET
R2
L1 L2 G1 G2
4.
Y
11-1/8"
(283mm)
LV1
LV2
LV3
E1 E2
73" (1854mm)
R3
17-3/16"
(437mm)
3.
CGD*
3-7/8"
(98mm)
Front
TOP VIEW
6"
(152mm)
17-1/16"
(434mm)
14-1/4"
(362mm)
15-7/8"
(403mm)
L1 L2 G1 G2
CGD*
FRONT SECTION
LEFT SIDE SECTION
Point
Description
R1
3
Refrigerant Access (Top)
R2
3
Refrigerant Access (Bottom)
Factory Location
(Left Front Panel Not Shown)
DPN001119
Rev. 3
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
60-5/8 (1539)
2-13/16 (71)
10-1/8 x 4-1/8 (257 105)
63 (1600)
13-13/16 (351)
16-7/16 x 4 (418 x 102)
L1
Liquid Line System 1
79-3/16 (2011)
16-3/4 (425)
1/2" Cu Sweat
L2
Liquid Line System 2
76-1/2 (1943)
16-3/4 (425)
1/2" Cu Sweat
G1
Hot Gas Discharge 1
73-7/8 (1876)
16-5/8 (422)
5/8" Cu Sweat
G2
Hot Gas Discharge 2
70-1/8 (1780)
16-5/8 (422)
5/8" Cu Sweat
R3
Refrigerant Access (Side)
—
—
6 x 17-3/16 (152 x 437)
CGD*
Condensate Gravity Drain
—
—
3/4" FPT
CPD
Condensate Pump Discharge (Optional)
56-1/4 (1429)
11-1/8 (283)
1/2" Cu Sweat
HUM
Humidifier Supply Line
56-1/4 (1429)
9-1/8 (233)
1/4" Cu Sweat
3
2
ECS *
Econ-O-Coil Supply
56 (1423)
7-5/16 (186)
1-5/8" Cu Sweat
ECR 2*
Econ-O-Coil Return
56 (1423)
4-1/2 (114)
1-5/8" Cu Sweat
E1
Electrical Connection (High-Voltage)
52-3/8 (1330)
30 (762)
2-1/2"
E2
Electrical Connection (High-Voltage)
46-7/8 (1191)
30 (762)
2-1/2"
LV1
Electrical Connection (Low-Voltage)
19-1/2 (495)
29-1/16 (738)
7/8"
LV2
Electrical Connection (Low-Voltage)
19-1/2 (495)
30-1/2 (775)
7/8"
LV3
Electrical Connection (Low-Voltage)
19-1/2 (495)
31-15/16 (811)
7/8"
1. Field pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual cool systems only.
3. Source: DPN001119, Rev. 3
Liebert® DS™
72
Weights and Dimensions
Figure 54
Cabinet and floor planning dimensions—Upflow, air-cooled 28-42kW (8-12 tons) semi-hermetic
compressor models with forward-curved blowers
Alternate Refrigerant
Piping Entrance
33"
(838mm)
5/16"
(8mm)
Bezel
35"
(889mm)
High-Voltage
Connection(s)
1-1/2"
(38mm)
TOP
VIEW
1-3/4"
(44mm)
Handle
Minimum required
for blower replacement
Low-Voltage
Connection(s)
24"
(610mm)
86" (2184mm)
76"
(1930mm)
34"
(864mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
85" (2159mm)
2"
(51mm)
FRONT VIEW
Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
73
DPN003153
Rev. 1
Liebert® DS™
Weights and Dimensions
Figure 55
Primary connection locations—Upflow, air-cooled, 28-42kW (8-12 tons), semi-hermetic
compressor models with forward-curved blowers
All dimensions from
rear corner of unit
including panels X
22-1/2"
(572mm)
NOTES:
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
15-3/16"
3 Field-routed alternatives for refrigerant
35" (386mm)
gas and liquid line connection points.
(889mm)
4 Forwad-curved blower shown. See
4"
submittal page DPN001120 for
(102mm)
blower outlet and deck dimensions.
3
R2
ECR
ECS
HUM
CPD
0
Blower
Outlet
4
L1 L2 G1 G2
16-7/16"
(418mm)
3
Y
E1
LV1
LV2
LV3
E2
86" (2184mm)
TOP VIEW
6"
(152mm)
17-3/16"
(437mm)
R3
G1 G2
3
CGD *
3-7/8"
(98mm)
Point
Front of Unit
14-1/4"
(362mm)
15-7/8"
(403mm)
LEFT SIDE SECTION VIEW
Description
R1
3
Refrigerant Access (Top)
R2
3
Refrigerant Access (Bottom)
20-1/16"
(509mm)
L1 L2
CGD *
Factory Location
FRONT SECTION VIEW
(Left Front Panel Not Shown)
X
in. (mm)
DPN001114
Rev. 3
Y
in. (mm)
Connection Size / Opening
in. (mm)
60-11/16 (1542)
1-7/8 (48)
22-1/2 x 15-3/16 (572 x 386)
63 (1600)
13-13/16 (351)
16-7/16 x 4 (418 x 102)
L1
Liquid Line System 1
79-3/16 (2011)
16-3/4 (425)
1/2" Cu Sweat
L2
Liquid Line System 2
76-1/2 (1943)
16-3/4 (425)
1/2" Cu Sweat
G1
Hot Gas Discharge 1
73-7/8 (1876)
16-3/4 (425)
5/8" Cu Sweat
Hot Gas Discharge 2
70-1/8 (1780)
16-3/4 (425)
5/8" Cu Sweat
—
—
6 x 17-3/16 (152 x 437)
G2
R3
Refrigerant Access (Side)
3
CGD 1
Condensate Gravity Drain
—
—
3/4" FPT
CPD
Condensate Pump Discharge (Opt)
56-1/4 (1429)
11-1/8 (283)
1/2" Cu Sweat
Humidifier Supply Line
56-1/4 (1429)
9-1/8 (233)
1/4" Cu Sweat
HUM
2
Econ-O-Coil Supply
56 (1423)
7-5/16 (186)
1-5/8" Cu Sweat
ECR 2
Econ-O-Coil Return
56 (1423)
4-1/2 (114)
1-5/8" Cu Sweat
E1
Electrical Conn. (High-Voltage)
52-3/8 (1330)
30 (762mm)
2-1/2"
E2
Electrical Conn. (High-Voltage)
46-7/8 (1191)
30 (762mm)
2-1/2"
LV1
Electrical Conn. (Low-Voltage)
19-1/2 (495)
29-1/16 (738)
7/8"
LV2
Electrical Conn. (Low-Voltage)
19-1/2 (495)
30-1/2 (775)
7/8"
LV3
Electrical Conn. (Low-Voltage)
19-1/2 (495)
31-15/16 (811)
7/8"
ECS
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only (four-pipe system).
3. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
4. Source: DPN001114, Rev. 3
Liebert® DS™
74
Weights and Dimensions
Figure 56
Cabinet and floor planning dimensions—Upflow, air-cooled, 53-77kW (15-22 tons), scroll or
digital scroll compressors with forward-curved blowers
Alternate Refrigerant
Piping Entrance
Digital scroll compressors
not available on 077 models.
33"
(838mm)
35"
(889mm)
High-Voltage
Connection(s)
5/16"
(8mm)
Bezel
1-3/4"
(44mm)
Handle
Low-Voltage
Connection(s)
TOP VIEW
1-1/2"
(38mm)
Minimum required
for blower replacement
98" (2489mm)
24"
(610mm)
76"
(1930mm)
34"
(864mm)
2"
(51mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
97" (2464mm)
FRONT VIEW
Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
75
DPN003157
Rev. 1
Liebert® DS™
Weights and Dimensions
Figure 57
Primary connection locations—Upflow, air-cooled, 53-77kW (15-22 tons), scroll compressor
models with forward-curved blowers
Digital scroll compressors not
available on VS 077 models.
NOTES:
12" (305mm)
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
4"
3. Field-routed alternatives for refrigerant
(102mm)
gas and liquid line connection points.
4"
35"
4. Forward-curved blowers shown. See
(102mm)
(889mm)
submittal page DPN001191 for
blower outlet and deck dimensions.
All dimensions from
rear corner of unit
including panels
Blower
Outlet
Blower
Outlet
12-13/16"
(325mm)
6" (152mm)
98" (2489mm)
Front of Unit
TOP VIEW OF UNIT
17-3/16"
(437mm)
CGD *
14-1/4"
(362mm)
3-7/8"
(98mm)
17-1/16"
(433mm)
15-7/8"
(403mm)
LEFT SIDE SECTION VIEW OF UNIT
CGD *
Factory
Location
DPN001213
Rev. 2
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
Refrigerant Access (Top)
83-5/8 (2124)
2 (51)
12 x 4 (305 x 102)
Refrigerant Access (Bottom)
82-3/4 (2102)
14-3/4 (374)
12-3/16 x 4 (310 x 102)
Point
Description
R1
3
R2
3
53kW (15 tons) / 70 & 77kW (20 & 22 tons)
L1
Liquid Line System 1
94-11/16 (2405)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
L2
Liquid Line System 2
91-7/8 (2334)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
G1
Hot Gas Discharge 1
88-3/4 (2254)
16-3/8 (416)
7/8 / 1-1/8 Cu Sweat
G2
Hot Gas Discharge 2
85-9/16 (2173)
16-3/8 (416)
7/8 / 1-1/8 Cu Sweat
R3
Refrigerant Access (Side)
—
—
6 x 17-3/16 (152 x 437)
CGD 1
Condensate Gravity Drain
—
—
3/4 FPT
CPD
Condensate Pump Discharge (Opt)
79-5/16 (2015)
11-7/8 (302)
1/2 Cu Sweat
3
HUM
Humidifier Supply Line
79-5-16 (2015)
9-7/8 (251)
1/4 Cu Sweat
2
Econ-O-Coil Supply
78-5/8 (1998)
7-7/8 (200)
2-1/8 Cu Sweat
ECR 2
Econ-O-Coil Return
78-5/8 (1998)
4-5/8 (117)
2-1/8 Cu Sweat
E1
Electrical Connection (High-Voltage)
75-3/8 (1915)
30 (762)
2-1/2
E2
Electrical Connection (High-Voltage)
69-7/8 (1775)
30 (762)
2-1/2
LV1
Electrical Connection (Low-Voltage)
19-1/2 (495)
29-1/16 (738)
7/8
LV2
Electrical Connection (Low-Voltage)
19-1/2 (495)
30-1/2 (775)
7/8
LV3
Electrical Connection (Low-Voltage)
19-1/2 (495)
31-15/16 (811)
7/8
ECS
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only.
3. Digital scroll compressors not available on 077 models.
4. Piping dimensions shown are connection sizes; field piping sizes may be different depending, on distance. Refer to user manual,
SL-18826.
5. Source: DPN001213, Rev. 2
Liebert® DS™
76
Weights and Dimensions
Figure 58
Cabinet and floor plannning dimensions—Upflow air-cooled 53-77kw (15-22 tons)
semi-hermetic compressor models with forward curved blowers
Alternate Refrigerant
Piping Entrance
33"
(838mm)
5/16"
(8mm)
Bezel
35"
(889mm)
High-Voltage
Connection(s)
1-1/2"
(38mm)
1-3/4"
(44mm)
Handle
TOP
VIEW
Low-Voltage
Connection(s)
Minimum required
for blower replacement
109" (2769mm)
24"
(610mm)
76"
(1930mm)
34"
(864mm)
2"
(51mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
108" (2743mm)
FRONT VIEW
Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
77
DPN003156
Rev. 1
Liebert® DS™
Weights and Dimensions
Figure 59
Primary connection locations—Upflow, air-cooled 53-77kW (15-22 tons), semi-hermetic
compressor models with forward-curved blowers
All dimensions from
rear corner of unit
including panels
22-1/2"
(572mm)
NOTES:
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
15-3/16"
(386mm)
3. Field-routed alternatives for refrigerant 35"
gas and liquid line connection points. (889mm)
4"
4. Forward-curved fans shown. See
(102mm)
submittal page DPN001191 for
blower outlet and deck dimensions.
Blower
Outlet
X
Blower
Outlet
16-7/16"
(418mm)
6"
(152mm)
O
Y
109" (2769mm)
TOP VIEW OF UNIT
Front of Unit
17-3/16"
(437mm)
3-7/8"
(98mm)
14-1/4"
(362mm)
20-1/16"
(509mm)
15-7/8"
(403mm)
CGD *
LEFT SIDE SECTION VIEW OF UNIT
Point
Description
R1
3
Refrigerant Access (Top)
R2
3
Refrigerant Access (Bottom)
Factory Location
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
DPN001212
Rev. 3
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
83-3/4 (2127)
1-7/8 (48)
22-1/2 x 15-3/16 (572 x 386)
86 (2184)
13-7/8 (352)
16-7/16 x4 (418 x102)
53kW (15 tons) / 70 & 77kW (20 & 22 tons)
L1
Liquid Line System 1
97 (2464)
16-3/4 (425)
1/2" / 5/8 Cu Sweat
L2
Liquid Line System 2
93-5/16 (2370)
16-3/4 (425)
1/2" / 5/8" Cu Sweat
G1
Hot Gas Discharge 1
90-5/8 (2302)
16-5/8 (422)
7/8" / 1-1/8" Cu Sweat
G2
Hot Gas Discharge 2
88 (2235)
16-5/8 (422)
7/8" / 1-1/8" Cu Sweat
R3
Refrigerant Access (Side)
—
—
6 x 17-3/16 (152 x 437)
CGD 1
Condensate Gravity Drain
—
—
3/4" FPT
CPD
Condensate Pump Discharge (Opt)
79-5/16 (2015)
11-7/8 (302)
1/2" Cu Sweat
HUM
Humidifier Supply Line
79-5/16 (2015)
9-7/8 (251)
1/4" Cu Sweat
ECS 2
Econ-O-Coil Supply
78-5/8 (1998)
7-7/8 (200)
2-1/8" Cu Sweat
ECR 2
Econ-O-Coil Return
78-5/8 (1998)
4-5/8 (117)
2-1/8" Cu Sweat
E1
Electrical Connection (High-Voltage)
75-3/8 (1915)
30 (762)
2-1/2"
E2
Electrical Connection (High-Voltage)
69-7/8 (1775)
30 (762)
2-1/2"
LV1
Electrical Connection (Low-Voltage)
19-1/2 (495)
29-1/16 (738)
7/8"
LV2
Electrical Connection (Low-Voltage)
19-1/2 (495)
30-1/2 (775)
7/8"
LV3
Electrical Conn. (Low-Voltage)
19-1/2 (495)
31-15/16 (811)
7/8"
3
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only.
3. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
4. Source: DPN001212, Rev. 3
Liebert® DS™
78
Weights and Dimensions
Figure 60
Cabinet and floor planning dimensions—Upflow, air-cooled, 105kW (30 tons), all compressor
models with forward-curved blowers
Digital scroll compressors
not available on 105 models.
Alternate Refrigerant
Piping Entrance
33"
(838mm)
35"
(889mm)
High-Voltage
Connection(s)
1-1/2"
(38mm)
5/16"
(8mm)
Bezel
1-3/4"
(44mm)
TOP VIEW Handle
Low-Voltage
Connection(s)
Minimum required
for blower replacement
132" (3353mm)
24"
(610mm)
76"
(1930mm)
34"
(864mm)
2"
(51mm)
131" (3327mm)
FRONT VIEW
Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
79
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
DPN003159
Rev. 1
Liebert® DS™
Weights and Dimensions
Figure 61
Primary connection locations—Upflow, air-cooled, 105kW (30 tons), semi-hermetic and scroll
compressor models with forward-curved blowers
Digital scroll compressors not
available on 105 models.
All dimensions from
rear corner of unit
including panels
22-1/2"
(572mm)
15-3/16"
(386mm)
R2
35"
(889mm)
ECR
ECS
HUM
CPD
Blower
Outlet
Blower
Outlet
16-7/16"
(418mm)
NOTES:
4"
1. Drawing not to scale.
(102mm)
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
3. Field-routed alternatives for refrigerant
gas and liquid line connection points.
4. Forward-curved fans shown. See submittal
page DPN001192 for blower outlet and
deck dimensions.
5. EC fans are field-installed in plenum.
O
X
Blower
Outlet
LV1 LV3
LV2
E1 E2
Y
LV4
132" (3353mm)
TOP VIEW
Front Of Unit
6"
(152mm)
R3
20-1/16"
(509mm)
17-3/16"
(437mm)
G2
L1 L2G1
CGD*
3-7/8"
(98mm)
14-1/4"
(362mm)
15-7/8"
(403mm)
CGD*
Factory Location
FRONT SECTION VIEW
(Left Front Panel Not Shown)
LEFT SIDE SECTION VIEW
DPN001257
Rev. 1
X, in. (mm)
Y, in. (mm)
Connection Size / Opening
Refrigerant Access (Top)
106-7/8 (2715)
1-7/8 (48)
22-1/2 x 15-3/16 (572 x 386)
Point
Description
R1
3
R2
3
Refrigerant Access (Bottom)
109-1/8 (2772)
13-7/8 (352)
16-7/16 x 4 (418 x 102)
L1
Liquid Line System 1
121-3/4 (3092)
16-3/4 (425)
5/8" Cu Sweat
L2
Liquid Line System 2
118-1/8 (3000)
16-3/4 (425)
5/8" Cu Sweat
G1
Hot Gas Discharge 1
118-1/4 (3004)
14-1/4 (362)
1-1/8" Cu Sweat
G2
Hot Gas Discharge 2
115-5/8 (2937)
14-1/4 (362)
1-1/8" Cu Sweat
R3
Refrigerant Access (Side)
—
—
6 x 17-3/16 (152 x 437)
CGD*
Condensate Gravity Drain
—
—
3/4" FPT
CPD
Condensate Pump Discharge (Opt)
102-3/8 (2600)
13-5/8 (346)
1/2" Cu Sweat
HUM
Humidifier Supply Line
101-1/8 (2569)
13-1/8 (333)
1/4" Cu Sweat
2
Econ-O-Coil Supply
101-1/8 (2569)
10-1/4 (260)
2-5/8" Cu Sweat
ECR 2
Econ-O-Coil Return
101-1/8 (2569)
5-1/4 (133)
2-5/8" Cu Sweat
E1
Electrical Connection (High-Voltage)
98-1/2 (2502)
30 (762)
2-1/2"
E2
Electrical Connection (High-Voltage)
93 (2362)
30 (762)
2-1/2"
LV1
Electrical Connection (Low-Voltage)
41-1/8 (1045)
30-3/8 (772)
7/8"
LV2
Electrical Connection (Low-Voltage)
38-7/8 (987)
30-3/8 (772)
7/8"
LV3
Electrical Connection (Low-Voltage)
35-1/8 (892)
30-3/8 (772)
7/8"
LV4
Electrical Connection (Low-Voltage)
31-5/8 (803)
30-3/8 (772)
7/8"
3
ECS
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only.
3. Digital scroll compressors not available on 105 models.
4. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
5. Source: DPN001257, Rev. 1
Liebert® DS™
80
Weights and Dimensions
7.8
Upflow Model Dimensions and Primary Connections—Water/Glycol/GLYCOOL™
Systems
Figure 62
Cabinet and floor planning dimensions—Upflow, water/glycol/GLYCOOL, 28-42kW (8-12 tons),
all compressor models with forward-curved blowers
Condenser Cleanout Access
33"
(838mm)
5/16"
(8mm)
Bezel Required for
condenser cleanout
Minimum required
for blower replacement
35"
(889mm)
Alternate Condenser Fluid
Piping Entra
High-Voltage
Connection(s)
1-1/2"
(38mm)
1-3/4"
(44mm)
Handle
Low-Voltage
Connection(s)
TOP VIEW
24"
(610mm)
86" (2184mm)
76"
(1930mm)
34"
(864mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
2"
(51mm)
85" (2159mm)
FRONT VIEW
Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
81
DPN003155
Rev. 1
Liebert® DS™
Weights and Dimensions
Primary connection locations—Upflow water/glycol/GLYCOOL™ 28-42kW (8-12 tons) all
compressor models with forward-curved blowers
Figure 63
1. Drawing not to scale.
2. Tolerance on all piping dimensions is ± 1/2" (13mm).
All dimensions from rear corner
of unit including panels
3. Field routed alternatives for water/glycol connections.
X
4. Unit with forward-curved fan
shown.See submittal page
DPN001120 for blower
outlet and deck dimensions.
W1, W2 3
8"
(203mm)
O
Blower
Outlet
ECS
ECR
HUM
CPD
4
35"
(889mm)
Y
2-7/8"
(73mm)
3-1/2"
(89mm)
E2
86" (2184mm)
6"
(152mm)
Front
TOP VIEW OF UNIT
W3
WS
WR
17-3/16"
(437mm)
3-7/8"
(98mm)
E1
LV1
LV2
LV3
3
CGD*
14-1/4"
(362mm)
15-7/8"
(403mm)
LEFT SIDE SECTION VIEW OF UNIT
CGD*
FRONT SECTION VIEW OF UNIT
DPN001179
Rev. 6
(Left Front Panel Not Shown)
Connection Size / Opening
in. (mm)
Description
X
in. (mm)
Y
in. (mm)
28-35kW (8-10 Ton) /
42kW (12 Ton)
Water/Glycol/GLYCOOL Access (Bottom)
Water/Glycol/GLYCOOL Access (Top)
Water/Glycol/GLYCOOL Access (Side)
Water/Glycol/GLYCOOL Supply
Water/Glycol/GLYCOOL Return
79-15/16 (2030)
79-15/16 (2030)
—
—
—
9 (229)
9 (229)
—
—
—
3-1/2 x 8 (89 x 203)
3-1/2 x 8 (89 x 203)
6 x 17-3/16 (152 x 437)
1-5/8" / 2-18" Cu Sweat
1-5/8" / 2-18" Cu Sweat
56 (1423)
56 (1423)
—
56-1/4 (1429)
56-1/4 (1429)
52-3/8 (1330)
46-7/8 (1191)
19-1/2 (495)
19-1/2 (495)
19-1/2 (495)
7-5/16 (186)
4-1/2 (114)
—
11-1/8 (282)
9-1/8 (232)
30 (762)
30 (762)
29-1/16 (738)
30-1/2 (775)
31-15/16 (811)
1-5/8" / 2-18" Cu Sweat
1-5/8" / 2-18" Cu Sweat
3/4" FPT
1/2" Cu Sweat
1/4" Cu Sweat
2-1/2"
2-1/2"
7/8"
7/8"
7/8"
Point
W1 3
W2 3
W3 3
WS 3
WR 3
ECS 2
2
ECR
CGD 1
CPD
HUM
E1
E2
LV1
LV2
LV3
Econ-O-Coil Supply
Econ-O-Coil Return
Condensate Gravity Drain
Condensate Pump Discharge (Opt)
Humidifier Supply Line
Electrical Connection (High-Voltage)
Electrical Connection (High-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
Electrical Connection (Low-Voltage)
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do
not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply
with all local codes.
2. Supplied on dual-cool systems only (four-pipe system).
3. Piping dimensions shown are connection sizes; field piping sizes may be different, depending on distance. Refer to user manual,
SL-18826.
4. Source: DPN001179, Rev. 6
Liebert® DS™
82
Weights and Dimensions
Figure 64
Cabinet and floor planning dimensions—Upflow, water/glycol-cooled, 53-77kW (15-22 tons), all
compressor models with forward-curved blowers
Digital scroll compressors
not available on 077 models.
Condenser Cleanout Access
33"
(838mm)
5/16"
(8mm)
Bezel
35"
(889mm)
Alternate Condenser Fluid
Piping Entra
High-Voltage
Connection(s)
1-1/2"
(38mm)
1-3/4"
(44mm)
Handle
Required for
condenser cleanout
Minimum required
for blower replacement
Low-Voltage
Connection(s)
TOP VIEW
109" (2769mm)
24"
(610mm)
76"
(1930mm)
34"
(864mm)
2"
(51mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
108" (2743mm)
FRONT VIEW
Front air return unit shown. For rear return unit, in addition to front service
area shown, also include 25" (635mm) on one side of unit for access to rear
return filter box. See DPN001196.
83
DPN003158
Rev. 1
Liebert® DS™
Weights and Dimensions
Primary connection locations—Upflow water/glycol/GLYCOOL™ 53-77kW (15-22 tons) all
compressor models with forward-curved blowers
Figure 65
Digital scroll compressors
not available on 077 models.
1. Drawing not to scale.
2. Tolerance on all piping dimensions is ± 1/2" (13mm).
3. Field-routed alternatives for GLYCOOL connections.
4. See submittal page DPN001191 for blower outlet and deck
dimensional data.
ECR
ECS
HUM
CPD
W1, W2
8"
(203mm)
35"
(889mm)
2-7/8"
(73mm)
All dimensions from
rear corner of unit
including panels
3.
BLOWER
OUTLET
BLOWER
OUTLET
4.
4.
O
X
Y
3-1/2"
(89mm)
LV1
LV2
LV3
E1 E2
109" (2769mm)
Front
6"
(152mm)
TOP VIEW
W3
WS
WR
17-3/16"
(437mm)
3.
CGD*
14-1/4"
(362mm)
3-7/8"
(98mm)
15-7/8"
(403mm)
FRONT SECTION VIEW
Left Front Panel Not Shown
CGD*
LEFT SIDE SECTION VIEW
Point
DPN001214
Rev. 2
Description
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
3-1/2 x 8 (89 x 203)
W1
3
Water/Glycol/GLYCOOL Access (Bottom)
102-15/16 (2615)
9 (229)
W2
3
Water/Glycol/GLYCOOL Access (Top)
102-15/16 (2615)
9 (229)
3-1/2 x 8 (89 x 203)
W3
3
Water/Glycol/GLYCOOL Access (Side)
—
—
6 x 17-3/16 (152 x 437)
WS
3
Water/Glycol/GLYCOOL Supply
—
—
2-1/8" Cu Sweat
WR
3
1
Water/Glycol/GLYCOOL Return
—
—
2-1/8" Cu Sweat
CGD
Condensate Gravity Drain
—
—
3/4" FPT
CPD
Condensate Pump Discharge (Opt)
78-5/8 (1998)
11-1/8 (282)
1/2" Cu Sweat
HUM
Humidifier Supply Line
78-5/8 (1998)
9-7/8 (251)
1/4" Cu Sweat
ECS
2
Econ-O-Coil Supply
79-5/16 (2015)
7-7/8 (200)
2-1/8" Cu Sweat
ECR
2
Econ-O-Coil Return
79-5/16 (2015)
4-5/8 (117)
2-1/8" Cu Sweat
E1
Electrical Connection (High-Voltage)
75-3/8 (1915)
30 (762)
2-1/2"
E2
Electrical Connection (High-Voltage)
69-7/8 (1775)
30 (762)
2-1/2"
LV1
Electrical Connection (Low-Voltage)
19-1/2 (495)
29-1/16 (738)
7/8"
LV2
Electrical Connection (Low-Voltage)
19-1/2 (495)
30-1/2 (775)
7/8"
LV3
Electrical Connection (Low-Voltage)
19-1/2 (495)
31-15/16 (811)
7/8"
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate
trap. Do not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain
line must comply with all local codes.
2. Supplied on dual-cool systems only.
3. Source: DPN001214, Rev. 2
Liebert® DS™
84
Weights and Dimensions
Figure 66
Cabinet and floor planning dimensions—Upflow, water/glycol-cooled, 105kW (30 tons), all
compressor models with forward-curved blowers
Alternate Refrigerant
Piping Entrance
Digital scroll compressors
not available on 105 models.
33"
(838mm)
35"
(889mm)
Alternate Condenser Fluid
Piping Entrance
High-Voltage
Connection(s)
1-1/2"
(38mm)
5/16"
(8mm)
Bezel
1-3/4"
(44mm)
TOP VIEW Handle
Low-Voltage
Connection(s)
Required for
condenser cleanout
Minimum required
for blower replacement
132" (3353mm)
24"
(610mm)
76"
(1930mm)
34"
(864mm)
2"
(51mm)
131" (3327mm)
Shaded area indicates a
required minimum clearance from floor
to top of unit and plenum for component
access.
Front air return unit shown. For rear return unit, in addition to front service
DPN003160
area shown, also include 25" (635mm) on one side of unit for access to rear
Rev. 1
return filter box. See DPN001196.
FRONT VIEW
85
Liebert® DS™
Weights and Dimensions
Primary connection locations—Upflow water/glycol/GLYCOOL™ 105kW (30 tons) all
compressor models with forward-curved blowers
Figure 67
All dimensions from
rear corner of unit
including panels
Digital scroll compressors
not available on 105 models.
Blower
Outlet
8"
35"
(203mm)
(889mm)
2-7/8"
NOTES:
(73mm)
1. Drawing not to scale.
3-1/2"
2. Tolerance on all piping dimensions
(89mm)
is ± 1/2" (13mm).
3. Field routed alternatives for water/glycol
connections.
4. Forward-curved blowers shown.
See submittal page DPN001192 for
blower outlet and deck dimensional data.
Blower
Outlet
Blower
Outlet
LV1 LV3
LV2
LV4
132"
(3353mm)
Front Of Unit
TOP VIEW OF UNIT
6"
(152mm)
W3
WS
WR
17-3/16"
(437mm)
CGD*
3-7/8"
(98mm)
CGD*
14-1/4"
(362mm)
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
15-7/8"
(403mm)
DPN001258
Rev. 1
LEFT SIDE SECTION VIEW OF UNIT
Point
Description
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
W1
3
Water/Glycol/GLYCOOL Access (Bottom)
126-1/8 (3204)
9 (229)
3-1/2 x 8 (89 x 203)
W2
3
Water/Glycol/GLYCOOL Access (Top)
126-1/8 (3204)
9 (229)
3-1/2 x 8 (89 x 203)
W3
3
Water/Glycol/GLYCOOL Access (Side)
—
—
6 x 17-3/16 (152 x 437)
WS
3
Water/Glycol/GLYCOOL Supply
—
—
2-1/8" Cu Sweat
WR
3
1
Water/Glycol/GLYCOOL Return
—
—
2-1/8" Cu Sweat
CGD
Condensate Gravity Drain
—
—
3/4" FPT
CPD
Condensate Pump Discharge (Opt)
102-3/8 (2600)
13-5/8 (346)
1/2" Cu Sweat
Humidifier Supply Line
101-1/8 (2569)
13-1/8 (333)
1/4" Cu Sweat
HUM
ECS
2
Econ-O-Coil Supply
101-1/8 (2569)
10-1/4 (260
2-5/8" Cu Sweat
ECR
2
Econ-O-Coil Return
101-1/8 (2569)
5-1/4 (133)
2-5/8" Cu Sweat
E1
Electrical Connection (High-Voltage)
98-1/2 (2502)
30 (762)
2-1/2"
E2
Electrical Connection (High-Voltage)
93 (2362)
30 (762)
2-1/2"
LV1
Electrical Connection (Low-Voltage)
41-1/8 (1045)
30-3/8 (772)
7/8"
LV2
Electrical Connection (Low-Voltage)
38-7/8 (987)
30-3/8 (772)
7/8"
LV3
Electrical Connection (Low-Voltage)
35-1/8 (892)
30-3/8 (772)
7/8"
LV4
Electrical Connection (Low-Voltage)
31-5/8 (803)
30-3/8 (772)
7/8"
1. Field-pitch condensate drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate
trap. Do not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain
line must comply with all local codes.
2. Supplied on dual-cool systems only.
3. Source: DPN001258, Rev. 1
Liebert® DS™
86
Blower Outlet and Deck Dimensions
8.0
BLOWER OUTLET AND DECK DIMENSIONS
Figure 68
Blower outlet and deck dimensions—Upflow, 28-42kW (8-12 tons) with forward-curved blowers
73" (1854mm) or 86" (2184mm) Ref
E
Blower Outlet *
C
A
35"
(889mm)
Ref
B
Blower Outlet Location - Top View
Front of Unit
* Duct flange not provided
Top of Unit
Blower Deck
1-1/2"
(38mm)
D
76"
(1930mm)
Ref
Front or Rear Throw Air Supply
DPN001120
Rev. 3
Dimensional Data in. (mm)
Models
28-42kW
(8-12 Tons)
Blower
15 x 15
15 x 15
Supply
A
B
C
D
E
Front Throw
15-7/8 (404)
Rear Throw
15-7/8 (404)
18-5/8 (472)
2-1/8 (54)
25-5/8 (651)
25 (635)
18-5/8 (472)
11-5/8 (295)
25-5/8 (651)
25 (635)
Front Throw
15-7/8 (404)
14-1/2 (368)
2-1/8 (54)
25-5/8 (651)
25 (635)
Rear Throw
15-7/8 (404)
14-1/2 (368)
11-5/8 (295)
25-5/8 (651)
25 (635)
Source: DPN001120, Rev. 3
87
Liebert® DS™
Blower Outlet and Deck Dimensions
Figure 69
Blower outlet and deck dimensions—Upflow, 53-77kW (15-22 tons) with forward-curved
blowers
98" (2449mm) or 109" (2769mm)
F
E
Blower Outlets *
C
A
A
35"
(889mm)
Ref
B
B
Blower Outlet Location - Top View
Front of Unit
* Duct flanges not provided.
Top of Unit
Blower Deck
D
1-1/2"
(38mm)
76"
(1930mm)
Ref.
Front or Rear Air Throw Supply
DPN001191
Rev. 6
Dimensional Data, in. (mm)
Models
53-77kW
(15-22
tons)
Blower
15 x 15
15 x 11
Supply
A
B
C
Front Throw 15-7/8 (404)
18-5/8 (472)
2-1/8 (54)
Rear Throw 15-7/8 (404)
18-5/8 (472)
Front Throw 15-7/8 (404) 14-11/16 (373)
E
F
25-5/8 (651) 27-3/4 (705)
55-1/2 (1410)
11-5/8 (295) 25-5/8 (651) 27-3/4 (705)
55-1/2 (1410)
2-1/8 (54)
25-5/8 (651) 31-3/8 (797) 58-7/16 (1484)
Rear Throw 15-7/8 (404) 14-11/16 (373) 11-5/8 (295) 25-5/8 (651) 31-3/8 (797) 58-7/16 (1484)
Source: DPN001191, Rev. 6
Liebert® DS™
D
88
Blower Outlet and Deck Dimensions
Figure 70
Blower outlet and deck dimensions—Upflow, 105kW (30 tons), forward-curved blowers
132" (3353mm)
G
Blower Outlets *
F
E
A
A
A
35"
(889mm)
Ref
B
B
B
C
BLOWER OUTLET LOCATION - TOP VIEW
Front of Unit
* Duct flanges not provided
TOP OF UNIT
Blower Deck
1-1/2"
(38mm)
76"
(1930mm)
Ref
DPN001192
Rev. 1
Front or Rear Throw Air Supply
Dimensional Data, in. (mm)
Blower
15 x 11
SUPPLY
A
B
Front Throw 15-7/8 (404) 14-11/16 (373)
C
D
2-1/8 (54)
E
F
G
25-5/8 (651) 30-3/4 (781) 54-1/2 (1384) 78-1/8 (1984)
Rear Throw 15-7/8 (404) 14-11/16 (373) 11-5/8 (295) 25-5/8 (651) 30-3/4 (781) 54-1/2 (1384) 78-1/8 (1984)
Source: DPN001192, Rev. 1
89
Liebert® DS™
Blower Outlet and Deck Dimensions
8.1
Disassembly Dimensions—Upflow Air-Cooled Systems
Figure 71
Disassembly dimensions—Upflow, air-cooled, 28-42kW (8-12 tons), scroll compressor models
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor Assembly
76" (1930mm)
Assembled
Height
Filter & Coil
Assembly
76"
(1930mm)
45-13/16"
(1163mm)
33"
(838mm)
13"
(330mm)
59" (1499mm)
72" (1829mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003162
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Air-Cooled
Dual-Cool
Compressor Assembly
490 (223)
490 (223)
Blower and Electric Box Assembly
Forward-Curved Blowers
510 (231)
510 (231)
EC Fan 1
360 (163)
360 (163)
Filter and Coil Assembly
520 (236)
670 (304)
Component
1. Fan weight not included in this weight. Fan is installed in plenum. See 313221 for plenum weight.
2. Source: DPN003162, Rev. 2
Liebert® DS™
90
Blower Outlet and Deck Dimensions
Figure 72
Disassembly dimensions—Upflow, air-cooled, 28-42kW (8-12 tons), semi-hermetic
compressors
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor Assembly
76"
(1930mm)
Assembled
Height
Filter & Coil
Assembly
76"
(1930mm)
45-13/16"
(1163mm)
33"
(838mm)
26"
(660mm)
85" (2159mm)
Assembled Length
59"
(1499mm)
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003161
Rev. 1
Dry Weight, Approximate, Including Panels, lb. (kg)
Air-Cooled
Dual-Cool
800 (364)
800 (364)
510 (231)
510 (231)
Blower and Electric Box Assembly (EC Fans )
360 (163)
360 (163)
Filter and Coil Assembly
520 (236)
670 (304)
Component
Compressor Assembly
Blower and Electric Box Assembly (Forward-Curved Fans)
1
1. Fan weight not included in this weight. Fan is installed in plenum. See 313221 for plenum weight.
2. Source: DPN003161, Rev. 1
91
Liebert® DS™
Blower Outlet and Deck Dimensions
Figure 73
Disassembly dimensions—Upflow, air-cooled, 53-77kw (15-22 tons), scroll or digital scroll
compressors
Digital scroll compressors not
available on 077 models.
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor Assembly
76"
(1930mm)
Assembled
Height
Filter & Coil
Assembly
76"
(1930mm)
45-13/16"
(1163mm)
33"
(838mm)
15"
(381mm)
82" (2083mm)
97" (2464mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
Model #
Dry Weight, Approximate, Including Panels, lb. (kg)
053, 070, 077
Scroll/Digital Scroll 1
Compressor
Component
Compressor Assembly
Blower and Electric Box Assembly
EC Fans 2
Blower and Electic Box Assembly
(Forward-Curved Blowers)
Filter and Coil Assembly
DPN003166
Rev. 1
Air-Cooled
Dual-Cool
540 (246)
540 (246)
600 (272)
600 (272)
770 (349)
770 (349)
760 (345)
940 (426)
1. Digital scroll compressors not available on 077 models.
2. Fan weight not included in this weight. Fans are installed in plenum. See 313221 for plenum weight.
3. Source: DPN003166, Rev. 1
Liebert® DS™
92
Blower Outlet and Deck Dimensions
Figure 74
Disassembly dimensions—Upflow, air-cooled, 53-77kW (15-22 tons), semi-hermetic
compressor models
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor Assembly
Filter & Coil
Assembly
76" (1930mm)
Assembled Height
76"
(1930mm)
45-13/16"
(1163mm)
33"
(838mm)
26"
(660mm)
82" (2083mm)
108" (2743mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003165
Rev. 2
Dry Weight, Approximate Including Panels, lb. (kg)
Air-Cooled
Dual-Cool
Compressor Assembly
970 (441)
970 (441)
Blower and Electric Box Assembly
(Forward-Curved Blowers)
770 (349)
770 (349)
EC Fans 1
600 (231)
600 (231)
Filter and Coil Assembly
760 (345)
940 (426)
Component
1. Fan weight not included in this weight. Fans are installed in plenum. See 313221 for plenum weight.
2. Source: DPN003165, Rev. 2
93
Liebert® DS™
Blower Outlet and Deck Dimensions
Figure 75
Disassembly dimensions—Upflow, air-cooled, 105kW (30 tons), standard scroll compressors
Digital scroll compressors
not available on 105 models.
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor
Assembly
76"
(1930mm)
Assembled
Height
Filter & Coil Assembly
76"
(1930mm)
45-13/16"
(1164mm)
33"
(838mm)
26"
(660mm)
105" (2667mm)
131" (3327mm
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
Seee disassembly and handling instructions in installation manual.
DPN003169
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Air-Cooled
Dual-Cool
Compressor Assembly
830 (376)
830 (376)
Blower and Electric Box Assembly
(Forward-Curved Blowers)
1080 (490)
1080 (490)
EC Fans 2
840 (381)
840 (381)
Filter and Coil Assembly
970 (440)
1300 (590)
Component
1. Digital scroll compressors not available on 105 models.
2. Fan weight not included in this weight. Fans are installed in plenum. See 313221 for plenum weight.
3. Source: DPN003169, Rev. 1
Liebert® DS™
94
Blower Outlet and Deck Dimensions
Figure 76
Disassembly dimensions—Upflow, air-cooled, 105kW (30 tons), semi-hermetic compressors
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor
Assembly
76"
(1930mm)
Assembled
Height
Filter & Coil
Assembly
76"
(1930mm)
45-13/16"
(1164mm)
33"
(838mm)
26"
(660mm)
105" (2667mm)
131" (3327mm
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003168
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Air-Cooled
Dual-Cool
Compressor Assembly
950 (431)
950 (431)
Blower and Electric Box Assembly
(Forward-Curved Blowers)
1080 (490)
1080 (490)
EC Fans 1
840 (381)
840 (381)
Filter and Coil Assembly
970 (440)
1300 (590)
Component
1. Fan weight not included in this weight. Fans are installed in plenum. See 313221 for plenum weight.
2. Source: DPN001254, Rev. 1
95
Liebert® DS™
Blower Outlet and Deck Dimensions
8.2
Disassembly Dimensions—Upflow, Water/Glycol/GLYCOOL™ Systems
Figure 77
Disassembly dimensions—Upflow, water/glycol/GLYCOOL, 28-42kW (8-12 tons), all
compressors
Digital scroll compressors not
available on 077 models.
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor Assembly
76" (1930mm)
Assembled
Height
Filter & Coil
Assembly
76"
(1930mm)
45-13/16"
(1163mm)
33"
(838mm)
26"
(660mm)
59" (1499mm)
85" (2159mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003163
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Semi-Hermetic Compressor
Scroll/Digital Scroll Compressor 1
Water/Glycol
GLYCOOL/Dual-Cool
Water/Glycol
GLYCOOL/Dual-Cool
Compressor Assembly
950 (432)
950 (432)
800 (364)
800 (364)
Blower and Electric Box Assembly
(Forward-Curved Blower)
510 (231)
510 (231)
510 (231)
510 (231)
Blower and Electric Box Assembly
EC Fans 2
360 (163)
360 (163)
360 (163)
360 (163)
Filter and Coil Assembly
520 (236)
670 (304)
520 (236)
670 (304)
Component
1. Digital scroll compressors not available on 077 models.
2. Fan weight not included in this weight; fans are installed in plenum. See 313221 for plenum weight.
3. Source: DPN003163, Rev. 1
Liebert® DS™
96
Blower Outlet and Deck Dimensions
Figure 78
Disassembly dimensions—Upflow, water/glycol/GLYCOOL™, 53-77kW (15-22 tons), all
compressors
Digital scroll compressors
not available on 077 models.
Blower & Electric
Box Assembly
31-1/4"
(794mm)
Compressor Assembly
76"
(1930mm)
Assembled
Height
Filter & Coil
Assembly
76"
(1930mm)
45-13/16"
(1163mm)
33"
(838mm)
26"
(660mm)
82" (2083mm)
108" (2743mm)
Assembled Length
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
DPN003167
Rev. 1
Dry Weight, Approximate, Including Panels, lb (kg)
Semi-Hermetic Compressor
Scroll or Digital Scroll Compressor 1
Water/Glycol
GLYCOOL/Dual-cool
Water/Glycol
GLYCOOL/Dual-Cool
Compressor Assembly
1270 (578)
1270 (578)
840 (382)
840 (382)
Blower and Electric Box Assembly
Forward-Curved Fans
770 (349)
770 (349)
770 (349)
770 (349)
Blower and Electric Box Assembly
EC Fans 2
600 (272)
600 (272)
600 (272)
600 (272)
Filter and Coil Assembly
760 (345)
940 (426)
760 (345)
940 (426)
Component
1. Digital scroll compressors not available on 077 models
2. Fan weight not included in this weight; fans are installed in plenum. See 313221 for plenum weight.
3. Source: DPN003167, Rev. 2
97
Liebert® DS™
Blower Outlet and Deck Dimensions
Disassembly dimensions—Upflow, water/glycol/GLYCOOL™, 105kW (30 Tons) all compressor
models
Figure 79
Digital scroll compressors
not available on 105 models.
Blower and Electric Box
Assembly
31-1/4"
(794mm)
Compressor Assembly
76" (1930mm)
Assembled Height
Filter and Coil
Assembly
76"
(1930mm)
45-13/16"
(1164mm)
33"
(838mm)
26"
(660mm)
105" (2667mm)
131" (3327mm)
Assembled Length
DPN003170
Rev. 1
Drawing views are simplified with panels removed to show overall dimensions.
See disassembly and handling instructions in installation manual.
Dry Weight, Approximate, Including Panels, lb (kg)
Semi-Hermetic Compressor
Scroll or Digital Scroll Compressor 2
Water/Glycol
GLYCOOL/Dual-cool
Water/Glycol
GLYCOOL/Dual-Cool
Compressor Assembly
1320 (599)
1320 (599)
1200 (544)
1200 (544)
Blower and Electric Box Assembly
Forward-Curved Fans
1080 (490)
1080 (490)
1080 (490)
1080 (490)
Blower and Electric Box Assembly
EC Fans
840 (381)
840 (381)
840 (381)
840 (381)
Filter and Coil Assembly
970 (440)
1300 (590)
970 (440)
1300 (590)
Component
1. Fan weight not included in this weight; fans are installed in plenum. See 313221 for plenum weight.
2. Digital scroll compressors not available on 105 models.
3. Source: DPN003170, Rev. 1
Liebert® DS™
98
Ancillary Items
9.0
ANCILLARY ITEMS
9.1
Floor Stands
Figure 80
Floor stand dimensions, downflow, 28-42kW (8-12 tons) models with EC fans
A + 1-1/2" (38mm) (with feet)
A
B
33"
(838mm)
34-1/2"
876mm
(With Feet)
1"
(35mm)
Typical
Right side of paneled unit is flush with right side of floor stand.
All other paneled sides overhang floor stand 1" (25mm).
* Leveling feet are provided with ± 1-1/2" (38mm) adjustment
from nominal height C.
Gussets supplied on floor stands
12" (305 mm) tall and greater
C*
1
7/8"
(23mm)
8"
(203mm)
3"
(76mm)
1
DPN003240
Rev. 1
Applies to 36", 42" and 48" floor stand.
Dimensions, in. (mm)
A
B
Floor Stand
Height C*
in. (mm)
DS028-042 Air-Cooled Semi-Hermetic and all Water/Glycol/GLYCOOL
Models
85 (2159)
27 (686)
24 (610)
DS028-042 Air-Cooled Scroll and Air-Cooled Digital Scroll Models
72 (1829)
14 (356)
30 (762)
Model
36 (914)
42 (1069)
Source: DPN003240, Rev. 1
48 (1219)
99
Liebert® DS™
Ancillary Items
Figure 81
Floor stand dimensions, downflow, 53-77kW (15-22 tons) models with EC fans
A
B
Piping Access Area
3/4"
(19mm)
32"
(813mm)
Center Feet
31-1/2"
(800mm)
3/4"
(19mm)
32-3/4"
(832mm)
C
Support Feet Centers
See Note 4
24" FLOOR STAND SHOWN
D
3/4"
(19mm)
1"
(25mm)
7/8"
(23mm)
33"
(838mm)
F*
G
3"
(76mm)
E
Notes
1. This floor stand should be used when EC fans are intended to be lowered under
a raised floor. The standard Liebert DS floor stand can be used if the fans are to
remain in their original raised position.
2. Right side of paneled unit is flush with right side of floor stand. All other paneled sides
overhang floor stand 1" (25mm).
3) The floor stand used with EC units is not symmetrical, and its orientation to the
Liebert DSE is critical for lowering the EC fans. The blowers will not lower into the
floor stand unless the floor stand is installed in the correct position.
4. Jack and jack support are shipped loose and are intended to be placed into position
under each fan and utilized to lower or raise that fan as needed.
* Leveling feet are provided with ±1-1/2" (38mm) adjustment from nominal height F.
35" (889mm)
Overall Depth
DPN003173
Rev. 1
Dimension, in. (mm)
Leg
Height
F, in.
(mm)
Height
G, in.
(mm)
A
B
C
D
E
DS053-077, Air-Cooled Semi-Hermetic
and all Water/Glycol/ GLYCOOL Models
108
(2743)
26
(660)
106.5
(2705)
108
(2743)
109.5
(2781)
24 (610)
—
DS053-077, Air-Cooled Scroll and
Air-Cooled Digital Scroll Models
97
(2464)
15
(381)
95.5
(2426)
97
(2464)
98.5
(2502)
30 (762)
—
Liebert DS Model
Source: DPN003173, Rev. 1
Liebert® DS™
100
36 (914)
5
42 (1067)
11
48 (1219)
17
Ancillary Items
Figure 82
Floor stand dimensions—Downflow, 105kW (30 tons) models with EC fans, standard scroll and
semi-hermetic compressors
Digital scroll compressors
not available on 105 models.
25"
(635mm)
34-1/2"
33"
(876mm)
(with feet) (838mm)
Typ. Both Ends
132-1/2" (3366mm)
(with feet)
131" (3327mm)
35" (889mm)
(with feet)
Typ. (2) Places
74" (1880mm)
1"
(25mm Typ.)
5
19-1/4"
(489mm)
See
Note 4
A
Notes
7/8"
(23mm)
3" (76mm)
35"
(889mm)
Overall Depth
1. This floor stand should be used when EC fans are intended to be lowered
under a raised floor. The standard Liebert DS floor stand can be used
if the fans are to remain in their original raised position.
Height - A
in. (mm)
24 (610)
30 (762)
2. Right side of paneled unit is flush with right side of floor stand. All other paneled
sides overhang floor stand 1" (25mm).
36 (914)
3. The floor stand used with EC units is not symmetrical and its orientation to the
Liebert DS is critical for lowering the EC fans. The blowers will not lower into the floor stand
unless the floor stand is installed in the correct position.
42 (1067)
48 (1219)
4. Jack and jack support are shipped loose and are intended to be placed into
position under each fan and utilized to lower or raise that fan as needed.
5. Not applicable to 24' (610mm) x 30" (762) tall floor stands.
*Leveling feet are provided with ± 1-1/2" (38mm) adjustment from nominal height “A.”
101
DPN003174
Rev. 2
Liebert® DS™
Ancillary Items
9.2
Plenums
Figure 83
Plenum dimensions—Upflow VS028-VS042 with EC fans
1 Shaded area indicates a recommended
minimum clearance of 36" (914mm) for
component access from the bottom of the unit
to the top of the plenum.
2
Must have access to remove front grille
or panel to remove EC fans.
m)
32.1"
(815mm)
m
63
.6"
(14
Top duct flanges on plenum
top for supply air ducting when
solid panel plenum is used.
0.88"
(2.2mm)
57
19.7"
(500mm)
Plenum
Height
4.3" (109mm)
0.88"
(2.2mm)
Both top duct opening
and grilles shown. See
specification sheet
for specific application.
m)
0m
.7"
4
(14
1.3"
(33mm)
2
56
m)
5
" (1
"
1.3 m)
m
(33
33.75"
(857mm)
m
05
5
9.2
5
1
Plenum Type
Height
In. (mm)
Grille & Top Discharge
24 (610)
Top Discharge Only
30 (762)
Top Discharge Only
36 (914)
Liebert® DS™
DPN002747
Rev. 1
102
Ancillary Items
Figure 84
1
2
Plenum dimensions—Upflow 53-77kW (15-22 tons) with EC fans
Top duct flanges on plenum
top for supply air ducting when
solid panel plenum is used.
Shaded area indicates a recommended
minimum clearance of 36" (914mm) for
component access from the bottom of the unit
to the top of the plenum.
Must have access to remove front grille
or panel to remove EC fans.
32"
(813mm)
m)
7m
"
81
5
(20
20"
(508mm)
4" (102mm)
1"
(25mm)
Plenum
Height
Both top duct opening
and grilles shown. See
specification sheet
for specific application.
0.88"
(2.2mm)
2
0.88"
(2.2mm)
m)
m
32
0
" (2
80
)
mm
3
08
" (2
82
1"
(25mm)
34"
(864mm)
1
DPN002748
Rev. 3
Plenum Type
Height
In. (mm)
Grille & Top Discharge
24 (610)
Top Discharge Only
30 (762)
Top Discharge Only
36 (914)
103
Liebert® DS™
Ancillary Items
Figure 85
Plenum dimensions—Upflow 105kW (30 tons) with EC fans
1
2
Shaded area indicates a recommended
minimum clearance of 36" (914mm) for
component access from the bottom of the unit
to the top of the plenum.
32"
(813mm)
Top duct flanges on plenum
top for supply air ducting when
solid panel plenum is used.
0.88"
(2.2mm)
Must have access to remove front grille )
or panel to remove EC fans.
mm
41
6
(2
4"
10
20"
(508mm)
Both top duct opening
and grilles shown. See
specification sheet
for specific application.
m)
m
(51 m)
2"
9m
5
" (5
22
Plenum
Height
0.88"
(2.2mm)
4" (102mm)
1"
(25mm)
2
m)
2m
"
80
3
(20
m)
3m
5"
10
34"
(864mm)
7
(26
1"
(25mm)
1
DPN002749
Rev. 1
Plenum Type
Height
In. (mm)
Grille & Top Discharge
24 (610)
Top Discharge Only
30 (762)
Top Discharge Only
36 (914)
Liebert® DS™
104
Ancillary Items
Figure 86
Plenum dimensions—28-105kW (8-30 tons), upflow with forward-curved blowers
FRONT VIEWS - CHECK ONE
REAR VIEWS - CHECK ONE
With Front Grille
With Rear Grille
Panel removable
for condenser clean
out access
(Water/Glycol/GLYCOOL
models only)
Without Grille
34"
(864mm)
Left Side Views Check One:
B
Without Grille
A
Right Side Views Check One:
H
1"
(25mm)
With
Grille
With Grille
76"
(1930mm)
Without
Grille
Without Grille
SIDE VIEW - UNIT WITH PLENUM
FRONT VIEW - UNIT WITH PLENUM
NOTES
1. Typical 53-77kW (15-20 Tons) unit orientation shown with grille plenum.
View varies by unit size and plenum selection.
2. Optional grille plenum kits must include front or rear grille.
DPN003164
3. Non-grille plenums are open on the top and not designed with duct flange.
Rev. 1
4. All plenums are shipped flat and must be field assembled.
Dimensions, in. (mm)
Grille Size, in. (mm) - Nominal
A
in. (mm)
B
in. (mm)
Front/Rear
Grilles
Side Grille
28-42kW (8-12 tons) Air-Cooled Scroll and
Air-Cooled Digital Scroll Models
59-1/4
(1505)
13-3/4
(349)
18 x 55
(457 x 1397)
18 x 20
(457 x 508)
28-42kW (8-12 tons) Semi-Hermetic and
all Water/Glycol/GLYCOOL Models
59-1/4
(1505)
26-3/4
(679)
18 x 55
(457 x 1397)
18 x 20
(457 x 508)
53-77kW (15-22 tons) Air-Cooled Scroll and Air-Cooled
Digital Scroll Models
82-1/4
(2089)
15-3/4
(400)
18 x 78
(457 x 1981)
18 x 20
(457 x 508)
53-77kW (15-22 tons) Semi-Hermetic and
all Water/Glycol/GLYCOOL Models
82-1/4
(2089)
26-3/4
(679)
18 x 78
(457 x 1981)
18 x 20
(457 x 508)
105kW (30 tons)—All Models
105-1/4
(2673)
26-3/4
(679)
(1) 18 x 20
(457 x 508)
(1) 18 x 78
(457 x 1981)
18 x 20
(457 x 508)
Model
Source: DPN003164, Rev. 1
Plenum Configuration
Height H, in. (mm)
20 (508)
Non-grilled
24 (610)
Non-grilled, front discharge or rear discharge
36 (914)
Non-grilled
Source: DPN003164, Rev. 1
105
Liebert® DS™
Ancillary Items
9.3
Rear Return Filter Box
Figure 87
Rear return filter box dimensions—Upflow, air cooled 28-105kW (8-30 tons), all compressors
Digital scroll compressors not
available on 077 or 105 models.
Filter Access
Door
Filter Access
Door
7-15/16"
(202mm)
40"
(1016mm)
38-1/4"
(971mm)
Duct Size
76"
(1930mm)
3-1/2" (89mm)
D Duct Size
A
B
NOTES
1. Filters can be accessed from either side.
2. 25" (635mm) minimum clearance provided on one side for filter access.
3. Filter boxes are shipped flat and must be field assembled.
C
DPN001196
Rev. 1
A
in. (mm)
B
in. (mm)
C
in. (mm)
D
in. (mm)
# Filters
DS28-42kW (8-12 Tons) Air-Cooled Scroll
and Air-Cooled Digital Scroll Models
4-1/4 (108)
50-3/4 (1289)
18 (457)
47-5/8 (1210)
4
DS28-42kW (8-12 Tons) Semi-Hermetic and All
Water/Glycol/GLYCOOL Models
4-1/4 (108)
50-3/4 (1289)
31 (787)
47-5/8 (1210)
4
DS53-77kW (15-22 Tons) Air-Cooled Scroll
and Air-Cooled Digital Scroll Models 1
3-1/4 (83)
75-1/2 (1918)
19-1/4 (489)
72-3/8 (1838)
6
DS53-77kW (15-22 Tons) Semi-Hermetic and
All Water/Glycol/GLYCOOL Models 1
3-1/4 (83)
75-1/2 (1918)
30-1/4 (768)
72-3/8 (1838)
6
DS105kW (30 Tons), All Models 1
2-1/4 (57)
100-1/4 (2546)
29-1/2 (749)
97-1/8 (2467)
8
Model #
1. Digital scroll compressors not available on 077 or 105 models.
2. Source: DPN001196, Rev. 1
Liebert® DS™
106
Piping
10.0 PIPING
Table 18
Recommended refrigerant line sizes - OD copper (inches)
Standard Scroll Models (Non-Digital Scroll)
Model
028
035
042
053
070
077
105
Hot
Hot
Hot
Hot
Hot
Hot
Hot
Equivalent Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid
Length
Line Line Line Line Line Line Line Line Line Line Line Line Line Line
50 ft (15m)
7/8
1/2
7/8
1/2
7/8
1/2
7/8
5/8
1-1/8
7/8
1-1/8
7/8
1-3/8
7/8
100 ft (30m)
7/8
5/8
7/8
5/8
7/8
5/8
1-1/8
7/8
1-1/8
7/8
1-1/8
7/8
1-3/8
7/8
150 ft (45 m)
7/8
5/8
7/8
5/8
7/8
5/8
1-1/8
7/8
1-1/8
7/8
1-1/8
7/8
1-3/8 1-1/8
4-Step Semi-Hermetic and Digital Scroll Models
Model
028
035
042
053
077 2
070
105 2
Hot
Hot
Hot
Hot
Hot
Hot
Hot
Equivalent Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid
Line Line Line Line Line Line Line Line Line Line Line Line Line Line
Length
50 ft (15m)
3/4
100 ft (30m)
1/2
3/4
150 ft (45 m)
5/8
7/8
5/8
3/4
1/2
7/8
7/8
5/8
7/8
5/8
5/8
7/8
1-1/8
5/8
1
5/8
7/8
1
1-1/8
1
1-1/8
7/8
1-1/81
7/8
1-1/8
7/8
1-3/8
7/8
7/8
1
7/8
1-1/8
7/8
1-3/8
7/8
1
7/8
1-1/8
7/8
1-3/8 1-1/8
7/8
1-1/8
1-1/8
1. Downsize vertical riser one trade size (1-1/8" to 7/8")
2. Digital scroll compressors not available on 077 or 105 models.
3. Source: DPN000788, Rev 1
Table 19
Indoor unit approximate refrigerant charge for R-407C
Model
R-407C Charge
per Circuit, lb. (kg)
028, 035, 042
5.5 (2.5)
053, 070, 077
8.0 (3.6)
105
9.5 (4.3)
System Type
Air-Cooled
Table 20
Interconnecting piping refrigerant charge
Line Size,
O.D., in.
R-407C, lb/100 ft. (kg/30m)
Liquid Line
Hot Gas Line
1/2
6.7 (3.0)
—
5/8
10.8 (4.8)
0.8 (0.4)
3/4
16.1 (7.2)
1.2 (0.5)
7/8
22.3 (10.0)
1.7 (0.8)
1-1/8
38.0 (17.0)
2.9 (1.3)
1-3/8
57.9 (25.9)
4.4 (2.0)
Source: DPN003099, Rev. 0
107
Liebert® DS™
Piping
Table 21
Liebert MC Condenser—Refrigerant required, R-407C, approximate
Dual-Circuit, lb/circuit (kg/circuit)
Condenser
Models
Condensers without
Liebert Lee-Temp
Condensers with
Liebert Lee-Temp
Approximate R-407C Refrigerant Needed
MCS056
2.2 (1.0)
21.0 (9.5)
MCM080
3.0 (1.4)
21.8 (9.9)
MCM160
7.5 (3.4)
44.5 (20.2)
MCL110
5.1 (2.3)
26.0 (11.8)
MCL220
12.2 (5.6)
53.8 (24.4)
Source: DPN002411, Rev. 7
Table 22
Liebert Fin/Tube condenser—Refrigerant required, R-407C, approximate
Approximate R-407C Refrigerant Needed
Dual-Circuit lb/circuit (kg/circuit)
Standard
Condenser
Models
FSC or VFD
Lee-Temp
(includes receiver)
CD*/TCDV205
7 (3.2)
54 (24.4)
CD*/TCDV251
10 (4.6)
36 (16.3)
CD*/TCDV308
11 (5.0)
55 (24.9)
CD*/TCDV415
24 (10.9)
102 (46.2)
CD*/TCDV616
26 (11.8)
108 (49.0)
Quiet-Line Condenser Models
DCD*214
N/A
77 (34.9)
DCD*286
N/A
119 (54.0)
DCD*409
N/A
148 (67.2)
DCD*572
N/A
186 (84.4)
Liebert® DS™
108
Piping
10.1
Piping Schematics
™
10.1.1 Typical System Configurations—LIEBERT MC
CONDENSERS
Figure 88 shows a single refrigeration circuit diagram, displaying the indoor air conditioning unit,
the outdoor condenser (with or without Liebert Lee-Temp™) and field-supplied interconnection piping.
Figure 88
Liebert MC piping schematic with and without Liebert Lee-Temp
Check Valve
Relief Valve
Service
Valve Liquid Return
Head Pressure
Control Valve
Liebert Lee-Temp Receiver
Check
Valve
Condenser
Coil
Condenser
Coil
Optional Field-Installed
Fusible Plug
Hot Gas Discharge
Liebert Lee-Temp
Internal
Inverted Trap
Liquid
Sensing
Bulb
Service
Valve
Check
Valve
For rises over 25ft. (7.6m),
trap every 20ft. (6m) or at
evenly divided distances*
Evaporator
Coil
Suction
Field installed relief valve(s) required
for 50Hz EU CE units
Service
External
Valve
Equalizer
Compressor
*Isolation
Valve
Hot Gas Discharge
Expansion Solenoid
Valve
Valve
Sight
Glass
Liquid Line
Filter Drier
Refrigerant Piping
Field Piping
Service/Schrader (Access) Connection No Valve Core
Service/Schrader (Access) Connection With Valve Core
NOTES
Single refrigeration circuit shown for clarity.
Schematic representation shown. Do not use for specific connection locations.
109
*Isolation
Valve
Trap at base
of risers
over 5ft. (1.5m)*
* Components are not supplied by
Liebert but are required for
proper circuit operation and
maintenance
DPN002188
Rev. 3
Liebert® DS™
Piping
10.1.2 Typical System Configurations—Fin/Tube
Figure 90 shows a single refrigeration circuit diagram, displaying the indoor air conditioning unit,
the outdoor condenser (VFD, Fan Speed Control or Liebert Lee-Temp™) and field-supplied
interconnection piping.
Figure 89
Check
Valve
Piping schematic, air-cooled with semi-hermetic compressor with fin/tube condenser
Relief Valve Service
Valve
Liebert Lee-Temp Receiver
Liquid Return
Optional
Subcooling
Coil
Head Pressure
Control Valve
Optional
Sub-Cooling
Coil
Inverted trap on discharge
and liquid lines to extend above
base of coil by a minimum of
7-1/2" (190mm).
CONDENSER
COIL
(FAN SPEED or VFD)
CONDENSER
COIL
(Liebert Lee-Temp)
Optional Field-Installed
Fusible Plug
Hot Gas Discharge
LIEBERT LEE-TEMP
For rises over
25ft. (7.6m),
trap every 20ft. (6m) or
evenly divided*
LIQUID
Service
Valve
Sensing
Bulb
Cylinder
Unloader(s)
EVAPORATOR
COIL
SUCTION
Muffler
Field-installed relief valve(s)
required for 50Hz EU CE units
rated maximum 480 PSIG (33 Bar).
COMPRESSOR Service External
Valve Equalizer
Check Valve
**Muffler
*Isolation
Valve
Hot Gas Discharge
Expansion Solenoid
Valve
Valve
Sight
Glass
Liquid Return
Filter Drier
NOTES: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
Trap at base of risers
over 5ft. (1.5m)*
* Components are not supplied by
Emerson but are required for
proper circuit operation and
maintenance.
Schematic representation shown.
Do not use for specific connection locations.
REFRIGERANT PIPING
FIELD PIPING
Service / Schrader (Access) Connection No Valve Core
Service / Schrader (Access) Connection With Valve Core
Liebert® DS™
*Isolation
Valve
110
** Components supplied by Emerson
and must be field-installed (70kW,
77 kW & 105kW models only).
DPN000797
Rev. 7
Piping
Figure 90
Piping schematic, air-cooled with scroll or digital scroll compressor with fin/tube condenser
Inverted Trap on discharge
and liquid lines to extend above
base of coil by a minimum of
7-1/2" (190mm).
Optional
Subcooling
Coil
CONDENSER
COIL
(Fanspeed or VFD)
Relief
Valve
Check
Valve
Service
Valve
Head Pressure
Liebert Lee-Temp Receiver Control Valve
Optional
Field-Installed
Fusible Plug
Hot Gas Discharge
LIEBERT LEE-TEMP
(Liebert Lee-Temp or VFD condenser
is required with digital scroll)
LIQUID
Sensing
Bulb
28-42kW Digital Solenoid Valve
53-70kW Digital
Solenoid Valve
Optional
Sub-Cooling
Coil
CONDENSER
COIL
(Liebert Lee-Temp)
Hot Gas Discharge
FANSPEED/VFD
(Liebert Lee-Temp or VFD condenser
is required with Digital Scroll)
Liquid Return
For rises over
25ft. (7.6m),
trap every 20ft.
(6m) or evenly
divided*
EVAPORATOR
COIL
SUCTION
Service
Valve
Check
External
Service
Valve
Equalizer
COMPRESSOR Valve
Field-installed relief valve(s) required
for 50Hz EU CE units rated maximum
480 PSIG (33 Bar).
*Isolation
Valve
Hot Gas Discharge
Expansion
Valve
Solenoid Sight
Filter Drier
Valve
Glass
NOTES: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
Schematic representation shown.
Do not use for specific connection locations.
Liquid Return
* Components are not supplied by
Emerson but are required for
proper circuit operation and
maintenance.
REFRIGERANT PIPING
FIELD PIPING
*Isolation
Valve Trap at base of risers
over 5ft. (1.5m)*
DPN000798
Rev. 7
Service / Schrader (Access) Connection No Valve Core
Service / Schrader (Access) Connection With Valve Core
111
Liebert® DS™
Piping
Figure 91
Piping schematic—Water/glycol semi-hermetic compressor models
Optional Dual Pump System Shown
** EXPANSION
TANK
LIEBERT
HEAT REJECTION
CUSTOMER
HEAT REJECTION
* Check Valves
(on Dual Pump
Systems only)
DRYCOOLER
(Glycol)
COOLING TOWER
AND PUMP
SYSTEM
BY OTHERS
GLYCOL
PUMPS
* Pressure
Port
Aquastat
Sensing
Bulbs
* Hose
Bib * Shutoff Valve
* Gate Valves
*** Air Vents
(typical)
* Pressure Port
Flow Switch
Supplied with Dual
Pump Systems
RETURN
* Shutoff Valve
SUPPLY
* Flow-Regulating
Valve
RETURN
LIEBERT DS
(and associated piping)
RETURN
SUPPLY
LIQUID
Sensing Bulb
Cylinder
Unloader(s)
Service
Valve
SUPPLY
Optional
3-Way
Regulating
Valve
EVAPORATOR
COIL
* Shutoff Valve
* Shutoff Valve
* Hose
Bib
SUCTION
* Hose
Bib
Muffler
COMPRESSOR
Service External
Check
Valve Equalizer
Valve
Two-Way
Regulating
Valve
DISCHARGE
Bypass Valve
PARADENSER®
CONDENSER
Expansion Solenoid Sight
Valve
Glass
Valve
Filter Drier
Relief valve(s) supplied
TO SECOND
with 50 Hz EU CE units rated
maximum 480 PSIG (33 Bar). REFRIGERATION
Sensor
CIRCUIT
* Components are not supplied by Emerson
but are required for proper circuit operation and
maintenance
** Field-installed at highest point in system on return
line to pumps
*** Locate at tops of all risers and any intermediate
system high points
FACTORY PIPING
FIELD PIPING
OPTIONAL FACTORY PIPING
Service / Schrader (Access) Connection No Valve Core
Service / Schrader (Access) Connection With Valve Core
NOTES: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
DPN000895
Rev. 5
Schematic representation shown.
Do not use for specific connection locations.
Liebert® DS™
112
Piping
Figure 92
Piping schematic—Water/glycol scroll compressor models
LIEBERT
HEAT REJECTION
CUSTOMER
HEAT REJECTION
** EXPANSION
TANK
GLYCOL
PUMPS
* Check Valves
(on Dual Pump
Systems only)
* Gate Valves
DRYCOOLER
(Glycol)
COOLING TOWER
AND PUMP
SYSTEM
BY OTHERS
Optional Dual Pump System Shown
* Pressure
Port
Aquastat
Sensing
Bulbs
*** Air Vents
(typical)
* Hose
* Shutoff Valve
Bib
* Pressure Port
Flow Switch
Supplied with Dual
Pump Systems
* Shutoff Valve
RETURN
* Flow-Regulating
Valve
SUPPLY
RETURN
LIEBERT DS
(and associated piping)
RETURN
LIQUID
Sensing Bulb
Optional
3-Way
Regulating
Valve
EVAPORATOR
COIL
* Shutoff Valve
* Hose
Bib
SUCTION
SUPPLY
SUPPLY
* Shutoff Valve
* Hose
Bib
Service
Valve
Service
CheckCOMPRESSOR Valve
Valve
External
Equalizer
Two-Way
Regulating
Valve
DISCHARGE
Bypass Valve
PARADENSER®
CONDENSER
Expansion Solenoid Sight
Valve
Valve
Glass
Filter Drier
Relief valve(s) supplied
with 50 Hz EU CE units rated
maximum 480 PSIG (33 Bar).
Sensor
To Second
Refrigeration
Circuit
FACTORY PIPING
FIELD PIPING
OPTIONAL FACTORY PIPING
Service / Schrader (Access) Connection No Valve Core
Service / Schrader (Access) Connection With Valve Core
NOTES: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
* Components are not supplied by
Emerson but are required for
proper circuit operation and maintenance
** Field-installed at highest point in system
on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
DPN000896
Rev. 5
Schematic representation shown.
This schematic does not imply or define elevations and
component location, unless specifically noted.
113
Liebert® DS™
Piping
Figure 93
Piping schematic—Water/glycol with digital scroll compressor models
LIEBERT
HEAT REJECTION
CUSTOMER
HEAT REJECTION
GLYCOL
PUMPS
Check Valves*
(on Dual Pump
Systems only)
DRYCOOLER
(Glycol)
COOLING TOWER
AND PUMP
SYSTEM
BY OTHERS
Optional Dual Pump System shown
EXPANSION
TANK**
Pressure
Port*
Gate Valves*
Aquastat
Sensing
Bulbs
Hose
Bib* Shut-Off Valve*
Air Vents
(typical)***
Pressure Port*
Flow Switch
Supplied with Dual
Pump Systems
LIEBERT DS
(and associated piping)
HOT GAS REHEAT
Optional 3-Way
Motorized Ball
Valve
LIQUID
28-42kW Digital Solenoid Valve Sensing Bulb
53-70kW Digital
Solenoid Valve
Flow-Regulating
Valve*
Shut-Off Valve*
RETURN SUPPLY
RETURN
SUPPLY
RETURN
SUPPLY
Shut-Off Valve*
Hose
Bib*
EVAPORATOR
COIL
Shut-Off Valve*
Hose
Bib*
SUCTION
Hot Gas Reheat
Valve
Service
Valve
Service
Valve
Check
COMPRESSOR
Valve
External
Equalizer
2-Way
Motorized
Ball Valve
Check Valve
DISCHARGE
From
Liebert
iCOM
Control
PARADENSER®
CONDENSER
Expansion Solenoid Sight
Filter Drier
Valve
Valve
Pressure
Glass
Relief valve(s) supplied Transducer
with 50 Hz EU CE units rated
maximum 480 PSIG (33 Bar).
To
Liebert
iCOM
Control
To Second
Refrigeration
Circuit
*
FACTORY PIPING
FIELD PIPING
OPTIONAL FACTORY PIPING
SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
NOTE: Two refrigeration circuits provided. Single refrigeration circuit shown for clarity
Schematic representation shown. This schematic does not imply or define elevations and
component location, unless specifically noted.
Liebert® DS™
114
Components are not supplied by
Emerson, but are required for
proper circuit operation and
maintenance
** Field-installed at highest point in
system on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
DPN001430
Rev. 1
Piping
Piping schematic—GLYCOOL™ semi-hermetic compressor models
Figure 94
LIEBERT
HEAT REJECTION
Optional Dual Pump System shown
EXPANSION
TANK**
GLYCOL
PUMPS
Check Valves*
(on Dual Pump
Systems only)
Pressure
Port*
DRYCOOLER
(Glycol)
Gate Valves*
Aquastat
Sensing
Bulbs
Hose
Bib* Shutoff Valve*
Air Vents
(typical)***
Pressure Port*
Flow Switch
Supplied with Dual
Pump Systems
Flow-Regulating
Valve*
Shutoff Valve*
RETURN
LIEBERT DS
(and associated piping)
SUPPLY
Shutoff Valve*
Sensing Bulb
Cylinder
Unloader(s)
RETURN
ECON-O-COIL
LIQUID
Service
Valve
SUPPLY
EVAPORATOR
COIL
3-Way
Chilled Glycol
Valve
Thermistor
Shutoff Valve*
Hose
Bib*
Hose
Bib*
SUCTION
External
Equalizer
Muffler
COMPRESSOR
Service
Valve
Check Valve
DISCHARGE
Service
Valve
®
PARADENSER
CONDENSER
Expansion Solenoid Sight
Valve
Glass
Valve
Filter
Dryer
Relief valve(s) supplied
with 50Hz EU CE units rated
maximum 480 PSIG (33 Bar).
3-Way
Regulating
Valve
Sensor
To Second
Refrigeration
Circuit
Factory Piping
Field Piping
Service/Schrader (Access) Connection No Valve Core
Service/Schrader (Access) Connections With Valve Core
Notes: Schematic representation shown. This schematic does not imply or define elevations and
component location unless specifically noted.
Two refrigeration circuits provided. Single refrigeration circuit shown for clarity.
115
* Components are not supplied by
Emeron but are required for
proper circuit operation and
maintenance
** Field-installed at highest point in
system on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
DPN000897
Rev. 4
Liebert® DS™
Piping
Piping schematic—GLYCOOL™ with scroll compressor models
Figure 95
EXPANSION
TANK**
LIEBERT
HEAT REJECTION
DRYCOOLER
(Glycol)
Optional Dual Pump System shown
GLYCOL PUMPS
Check Valves*
(on Dual Pump
Systems only)
Pressure
Port*
Aquastat
Sensing
Bulbs
Hose
Bib*
Shutoff Valve*
Gate Valves*
Air Vents
(typical)***
Pressure Port*
Flow Switch
Supplied with Dual
Pump Systems
Flow-Regulating
Valve*
Shutoff Valve*
RETURN
LIEBERT DS UNIT
(and associated piping)
ECON-O-COIL
RETURN
LIQUID
Sensing Bulb
Service
Valve
SUCTION
EVAPORATOR
COIL
3-Way
Chilled Glycol
Valve
Thermistor
SUPPLY
SUPPLY
Shutoff Valve*
Shutoff Valve*
Hose
Bib*
Hose
Bib*
Check
Valve
Service
Valve External
Equalizer
COMPRESSOR
DISCHARGE
Paradenser®
Condenser
Expansion Solenoid Sight
Valve
Valve
Glass
3-Way
Regulating
Valve
Filter Dryer
Relief valve(s) supplied
with 50 Hz EU CE units rated To Second
maximum 480 PSIG (33 Bar). Refrigeration
Circuit
Sensor
FIELD PIPING
FACTORY PIPING
SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
NOTES: Two refrigeration circuits provided. Single refrigeration circuit shown for clarity.
Schematic representation shown. This schematic does not imply or define elevations and
component location, unless specifically noted.
* Components are not supplied
by Liebert but are required for
proper circuit operation and
maintenance
** Field installed at highest point in
system on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
DPN000898
Rev. 4
Liebert® DS™
116
Piping
Figure 96
Piping schematic—GLYCOOL™ with digital scroll compressor models
LIEBERT
HEAT REJECTION
Optional Dual Pump System shown
EXPANSION
TANK**
GLYCOL
PUMPS
Check Valves*
(on Dual Pimp
Systems only)
Gate Valves*
Pressure
Port*
DRYCOOLER
(Glycol)
Aquastat
Sensing
Bulb
Hose
Bib*
Shutoff Valve*
Air Vents
(typical)***
Pressure Port*
Flow Switch
Supplied with Dual
Pump Systems
Flow-Regulating
Valve*
Shutoff Valve*
LIEBERT DS
(and associated piping)
LIQUID
28-42kW Digital Solenoid Valve
53-70kW Digital
Solenoid Valve
ECON-O-COIL
RETURN
SUPPLY
RETURN
SUPPLY
Shutoff Valve*
Sensing Bulb
EVAPORATOR
COIL
3-Way
Chilled Glycol
Valve
Thermistor
Hose
Bib*
Shutoff Valve*
Hose
Bib*
SUCTION
Service
Valve
Check
Valve COMPRESSOR
3-Way
Motorized
Ball Valve
External
Equalizer
DISCHARGE
From
Liebert
iCOM
Control
PARADENSER®
CONDENSER
Expansion Solenoid Sight
Filter Drier
Valve
Valve
Pressure
Glass
Relief valve(s) supplied Transducer
with 50Hz EU CE units rated
maximum 480 PSIG (33 Bar).
To
Liebert
iCOM
Control
To Second
Refrigeration
Circuit
*
FACTORY PIPING
FIELD PIPING
SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
NOTE: Two refrigeration circuits provided. Single refrigeration circuit shown for clarity.
Schematic representation shown. This schematic does not imply or define elevations and
Component location, unless specifically noted.
117
Components are not supplied by
Emerson, but are required for
proper circuit operation and
maintenance
** Field installed at highest point in
system on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
DPN001432
Rev. 1
Liebert® DS™
Piping
Figure 97
Piping schematic—Optional Econ-O-Coil
Return Supply
Return Supply
Thermistor*
Thermistor*
Actuator
Return
Return
Supply
Supply
Econ-O-Coil
Econ-O-Coil
Optional Econ-O-Coil (2-Way Valve)
Factory Piping
Field Piping
Actuator
Optional Econ-O-Coil (3-Way Valve)
*Supplied with 10 feet (3m) extra thermistor wire for installation
on field suppy line.
DPN000805
2
1. Place thermistor in location where flow is always present.
Rev.
2. Thermistor must be located out of the supply air stream.
3. On downflow units the sensor is coiled in the bottom of the
unit on the left side. On upflow units it is coiled on top of unit on the left side.
Liebert® DS™
118
Electrical Field Connections
11.0 ELECTRICAL FIELD CONNECTIONS
Figure 98
Electrical field connections—Upflow and downflow models, single molded case switch
disconnect with main fuses
See 11.1 - Standard Electrical Field Connections, 11.2 Optional Electrical Connections, 11.2 - Optional Electrical
Connections and 11.3 - Optional Low-Voltage Terminal
Package Connections for keys to numbered components.
2
OVERCURRENT PROTECTION DEVICES
15
4
A
B
C
D
Liebert
IntelliSlot
Housing
Alternate
Location
6
P64
CONTACTORS
P67
60Hz
CONTACTORS, RELAYS, &
OVERLOAD PROTECTORS
13
E
1
5
17 18
82 83 88 89
A
24 23
58 59 84 85
6
3
Downflow
Typical orientation of components shown.
DOWNFLOW LOW-VOLTAGE SECTION
Component location varies by option and unit size.
9
16
22
19
NOTICE
75 76 94 95 96 97 91 92 93 80 81 11 12
21
7
B
10
8
20
37C38C 37B 38B 37 38 24 50 51 55 56 70 71 230 72 73
D
A
B
C
D
11
49-3
49-1
SH
C
Risk of broken or shorted low-voltage
wiring. Field-installed low-voltage wiring
must be routed with loop as shown
to allow electric box to swing.
UPFLOW
3
12
E
DPN000807
Pg. 3, Rev. 13
E
Item 12 Installation Conditions
Point of Hinged Low-Voltage
1. Follow all local installation codes.
Electric Box
2. Do not run CAN cables in same conduit, raceway, or
LIEBERT DS UPFLOW LOW-VOLT SECTION
chase as high voltage wires (120-600V).
3. Separate high volt wires from CAN wires by 12 inches.
4. For runs greater than 350ft(107m), contact Liebert factory.
119
Liebert® DS™
Electrical Field Connections
Figure 99
Electrical field connections—Upflow and downflow models, dual-fused disconnect switches
See 11.1 - Standard Electrical Field Connections, 11.2 Optional Electrical Connections, 11.2 - Optional Electrical
Connections and 11.3 - Optional Low-Voltage Terminal
Package Connections for keys to numbered components.
2
OVERCURRENT PROTECTION DEVICES
15
14
60Hz
6
A
B
C
D
4
Liebert
IntelliSlot
Housing
Alternate
Alternate
Location
Location
15
P64
CONTACTORS
PRIMARY
P67
SECONDARY
13
CONTACTORS, RELAYS and
OVERLOAD PROTECTORS
E
6
1
17 18
82 83 88 89
Typical orientation of components shown.
Component location varies by option and unit size.
22
9
16
58 59 84 85
7
37C 38C 37B38B 37 38 24 50 51 55 56 70 71 230 72 73
D
NOTICE
Risk of broken or shorted low-voltage
wiring. Field-installed low-voltage wiring
must be routed with loop as shown
to allow electric box to swing.
20
10
8
A
B
C
D
11
49-3
49-1
SH
C
DOWNFLOW LOW VOLTAGE SECTION
UPFLOW
3
B
21
3
19
75 76 94 95 96 97 91 92 93 80 81 11 12
A
24 23
DOWNFLOW
12
E
E
Item 12 Installation Conditions
1. Follow all local installation codes.
2. Do not run CAN cables in same conduit, raceway or
chase as high-voltage wires (120-600V).
3. Separate high-voltage wires from CAN wires by 12” (305mm)
4. Contact factory for runs greater than 350ft. (107m).
Liebert® DS™
120
Point of Hinged Low-Voltage
Electric Box
DS UPFLOW LOW-VOLTAGE SECTION
DPN000807
Pg. 4, Rev. 13
Electrical Field Connections
11.1
Standard Electrical Field Connections
Source: DPN000807, Rev. 13
1. Primary high-voltage entrance—2.50" (64mm); 1.75" (44mm); 1.375" (35mm) diameter
concentric knockouts in bottom of box.
2. Secondary high-voltage entrance—2.50" (64mm); 1.75" (44mm); 1.375" (35mm) diameter
concentric knockouts in top of box.
3. Primary low-voltage entrance—Three knockouts, each 1.375" (35mm) diameter in bottom of
unit.
4. Secondary low-voltage entrance—Three knockouts, each 1.375" (35mm) diameter in top of
box.
5. Three-phase electrical service—Terminals are on main fuse block (disregard if unit has
optional disconnect switch). Three-phase service not by Emerson.
6. Earth ground—Terminal for field-supplied earth grounding wire. Earth grounding required for
Liebert units.
7. Remote unit shutdown—Replace existing jumper between Terminals 37 and 38 with
field-supplied normally closed switch having a minimum 75VA, 24VAC rating. Use field-supplied
Class 1 wiring.
8. Customer alarm inputs—Terminals for field-supplied, normally open contacts, having a
minimum 75VA, 24VAC rating, between Terminals 24 and 50, 51, 55, 56. Use field-supplied Class
1 wiring. Terminal availability varies by unit options.
9. Common alarm—On any alarm, normally open dry contact is closed across Terminals 75 and 76
for remote indication. 1A, 24VAC maximum load. Use field-supplied Class 1 wiring.
10. Heat rejection interlock—On any call for compressor operation, normally open dry contact is
closed across Terminals 70 and 71 (Circuit 1), 230 (Circuit 2) to heat rejection equipment. 1A,
24VAC maximum load. Use field-supplied Class 1 wiring. When Liebert DS is paired with a
Liebert MC™ series condenser, remove jumper between Terminal 71 and Terminal 230. Three
wires must connect Terminals 70, 71 and 230 of the indoor unit to Terminals 70, 71 and 230 of the
Liebert MC.
CANbus Electrical Connections
11. CANbus Connector– Terminal block with Terminals 49-1 (CAN-H) and 49-3 (CAN-L) + SH
(shield connection). The terminals are used to connect the CANbus communication cable
(provided by others) from the indoor unit to the Liebert MC - Premium Model and optional Liebert
PRE™.
12. CANbus Cable—CANbus cable provided by others to connect to the outdoor condenser and
optional Liebert PRE. No special considerations are required when the total external cable
connection between the indoor unit and outdoor unit(s) is less than 450 ft. (137m). A CANbus
isolator is required for total external cable connections greater than 450 ft. (137m) but less than
800 ft. (243m). Cable must meet the following specifications:
• Conductors 22-18AWG stranded tinned copper
• Twisted pair (minimum 4 twists per foot)
• Braided shield or foil shield with drain wire
• Low Capacitance (15pF/FT or less)
• UL approved temperature rated to 75°C
• UL approved-voltage rated to 300V
• UV-resistant and moisture-resistant if not run in conduit
• Plenum-rated NEC type CMP, if required by national or local codes
Examples: Belden 89207 (plenum-rated), or Alpha Wire 6454 Category 5, 5e, or higher
121
Liebert® DS™
Electrical Field Connections
11.2
Optional Electrical Connections
Source: DPN000807, Rev. 13
13. Unit factory-installed disconnect switch, fuse block and main fuses—Two types of
disconnect switches are available: Non-Locking and Locking. The Non-Locking switch consists of
a non-automatic molded case switch operational from the outside of the unit. Access to the
high-voltage electric panel compartment can be obtained with the switch in either the On or Off
position. The Locking switch is identical except access to the high-voltage electric panel
compartment can be obtained only with the switch in the Off position. Units with fused
disconnects are provided with a defeater button that allows access to the electrical panel when
power is On. The molded case switch disconnect models contain separate main fuses. Units with
fused disconnects have main fuses within disconnect. Only fused disconnects are used on dual
disconnect options.
14. Secondary disconnect switch and earth ground
15. Three-phase electrical service—Terminals are on top of disconnect switch. Three-phase
service not by Emerson.
16. Smoke sensor alarm—Factory-wired dry contacts from smoke sensor are 91-common, 92-NO
and 93-NC. Supervised contacts, 80 and 81, open on sensor trouble indication. This smoke sensor
is not intended to function as, or replace, any room smoke detection system that may be required
by local or national codes. 1A, 24VAC maximum load. Use field-supplied Class 1 wiring.
17. Reheat and humidifier lockout—Remote 24VAC required at Terminals 82 and 83 for lockout
of reheat and humidifier.
18. Condensate alarm (with condensate pump option)—On pump high water indication,
normally open dry contact is closed across Terminals 88 and 89 for remote indication. 1A, 24VAC
maximum load. Use field-supplied Class 1 wiring.
19. Remote humidifier—On any call for humidification, normally open dry contact is closed across
Terminals 11 and 12 to signal field-supplied remote humidifier. 1A, 24VAC maximum load. Use
field-supplied Class 1 wiring.
20. Auxiliary cool contact—On any call for Liebert Econ-O-Coil™ operation, normally open dry
contact is closed across Terminals 72 and 73 on dual cool units only. 1A, 24VAC maximum load.
Use field-supplied Class 1 wiring.
11.3
Optional Low-Voltage Terminal Package Connections
21. Remote unit shutdown—Two additional contact pairs available for unit shutdown (labeled as
37B and 38B, 37C and 38C). Replace jumpers with field-supplied normally closed switch having a
minimum 75VA, 24VAC rating. Use field-supplied Class 1 wiring.
22. Common alarm—On any alarm, two additional normally open dry contacts are closed across
Terminals 94 and 95 and 96 and 97 for remote indication. 1A, 24VAC maximum load. Use
field-supplied Class 1 wiring.
23. Main fan auxiliary switch—On closure of main fan contactor, normally open dry contact is
closed across Terminals 84 and 85 for remote indication. 1A, 24VAC maximum load. Use
field-supplied Class 1 wiring.
24. Liebert Liqui-tect® shutdown and dry contact—On Liebert Liqui-tect activation, normally
open dry contact is closed across Terminals 58 and 59 for remote indication (Liebert Liqui-tect
sensor ordered separately). 1A, 24VAC maximum load. Use field-supplied Class 1 wiring.
Refer to specification sheet for total unit full load amps, wire size amps and maximum
overcurrent protective device size.
Liebert® DS™
122
Heat Rejection—Liebert MC™
12.0 HEAT REJECTION—LIEBERT MC™
12.1
Liebert MC Selections
Table 23
75°F/45RH return air conditions for traditional rooms
Outdoor Design Ambient Temperature
Model #
95°F (35°C)
100°F (38°C)
105°F (41°C)
110°F (43°C)
115°F (46°C)
120°F (49°C)
DS/VS028A
MCM056_8
MCM056_8
MCM080_8
MCL110_8
MCL110_8
MCL110_8
DS/VS035A
MCM056_8
MCM080_8
MCM080_8
MCL110_8
MCL110_8
MCL110_8
DS/VS042A
MCM056_8
MCM080_8
MCL110_8
MCL110_8
MCL110_8
MCL110_8
DS/VS053A
MCM056_8
MCM080_8
MCL110_8
MCM160_8
MCM160_8
MCL220_8
DS/VS070A
MCM080_8
MCL110_8
MCL110_8
MCM160_8
MCM160_8
MCL220_8
DS/VS077A
MCM080_8
MCL110_8
MCL110_8
MCM160_8
MCM160_8
MCL220_8
DS/VS105A
MCL110_8
MCM160_8
MCM160_8
MCL220_8
MCL220_8
MCL220_8
Table 24
85°F/33RH return air conditions for Hot Aisle/Cold Aisle applications
Outdoor Design Ambient Temperature
Model #
95°F (35°C)
100°F (38°C)
105°F (41°C)
110°F (43°C)
115°F (46°C)
120°F (49°C)
DS/VS028A
MCM056_8
MCM080_8
MCL110_8
MCL110_8
MCL110_8
MCM160_8
DS/VS035A
MCM056_8
MCM080_8
MCL110_8
MCL110_8
MCM160_8
MCM160_8
DS/VS042A
MCM080_8
MCL110_8
MCL110_8
MCM160_8
MCM160_8
MCM160_8
DS/VS053A
MCL110_8
MCL110_8
MCM160_8
MCL220_8
MCL220_8
MCL220_8
DS/VS070A
MCL110_8
MCM160_8
MCM160_8
MCL220_8
MCL220_8
MCL220_8
DS/VS077A
MCL110_8
MCM160_8
MCM160_8
MCL220_8
MCL220_8
MCL220_8
DS/VS105A
MCM160_8
MCL220_8
MCL220_8
MCL220_8
MCL220_8
—
Table 25
™
T75°F/45RH return air conditions Liebert QuietLine for lower sound levels
Outdoor Design Ambient Temperature
Liebert DS
Model #
95°F (35°C)
100°F (38°C)
105°F (41°C)
110°F (43°C)
115°F (46°C)
DS/VS028A
MCM080E8
MCM080E8
MCL110E8
MCL110E8
MCL110E8
DS/VS035A
MCM080E8
MCL110E8
MCL110E8
MCM160E8
MCM160E8
DS/VS042A
MCM080E8
MCL110E8
MCL110E8
MCM160E8
MCM160E8
DS/VS053A
MCL110E8
MCL110E8
MCM160E8
MCL220E8
MCL220E8
DS/VS070A
MCL110E8
MCM160E8
MCL220E8
MCL220E8
MCL220E8
DS/VS077A
MCL110E8
MCM160E8
MCL220E8
MCL220E8
MCL220E8
DS/VS105A
MCM160E8
MCL220E8
Consult Factory
123
Liebert® DS™
Heat Rejection—Liebert MC™
12.2
Liebert MC™Dry Weight and Additional Weight of Options
Total unit weight is the sum of the condenser weight with the selected legs plus the weight of any
option.
Source: DPN003034, Rev. 1
Table 26
Condenser and option net weights—Small condensers
Condenser Model
Refrigeration Circuits
Condenser Dry
Weight, lb (kg)
MCS056
2
18" Leg
270 (122)
36" Leg
419 (190)
48" Leg
451 (205)
60" Leg
482 (219)
Additional Weight for Options, lb (kg)
Liebert Lee-Temp
Coated Coil
575 Transformer
Table 27
110 (50)
8 (4)
63 (29)
Condenser and option net weights—Medium condensers
Condenser Model
MCM080
MCM160
2
2
18" Leg
441 (200)
860 (390)
36" Leg
590 (268)
1066 (484)
48" Leg
622 (282)
1114 (505)
60" Leg
653 (296)
1160 (526)
110 (50)
220 (100)
Coated Coil
10 (5)
20 (9)
575 Transformer
63 (29)
76 (34)
Refrigeration Circuits
Condenser Dry
Weight, lb (kg)
Additional Weight for Options, lb (kg)
Liebert Lee-Temp
Table 28
Condenser and option net weights—Large condensers
Condenser Model
MCL110
MCL220
2
2
18" Leg
602 (273)
1186 (538)
36" Leg
766 (347)
1453 (659)
48" Leg
798 (362)
1501 (681)
60" Leg
829 (376)
1547 (702)
120 (54)
240 (109)
16 (7)
32 (15)
90 (41)
134 (61)
Refrigeration Circuits
Condenser Dry
Weight, lb (kg)
Additional Weight for Options, lb (kg)
Liebert Lee-Temp
Coated Coil
Liebert® DS™
124
Heat Rejection—Liebert MC™
12.3
Sound Power Data
Table 29
Liebert MC™ sound power data
100% Speed - A-Weighted Sound Power, dBA
Frequency - Hz
Liebert MC
Model #
63
125
250
500
1000
2000
4000
8000
Total
MCS056
53
73
69
73
76
74
67
61
81
MCM80
52
70
76
79
81
79
72
65
85
MCM160
55
73
79
82
84
82
75
68
89
MCL110
65
74
78
83
85
83
76
69
89
MCL220
68
77
81
86
88
86
79
72
92
12.4
Electrical Data—Liebert MC™
Table 30
Liebert MC electrical data, three-phase, 60Hz condenser, Premium Version (EC control)
Power Requirements
FLA
WSA
Model #
Number
of Fans
208/230V
460V
575V
208/230V
460V
OPD
575V
208/230V
460V
575V
MCS056
2
6.0
2.8
2.3
6.8
3.3
2.8
15
15
15
MCM080
2
4.6
2.8
2.3
5.5
3.3
2.8
15
15
15
MCM160
4
9.2
5.6
4.7
9.8
6.0
5.0
15
15
15
MCL110
2
11.4
5.6
4.7
12.8
6.3
5.3
15
15
15
MCL220
4
22.8
11.2
9.3
24.2
11.9
9.9
25
15
15
1.
2.
FLA = Full Load Amps; WSA = Wire Size Amps; OPD = Maximum Overcurrent Protection Device.
208V–460V premium models must be connected to Wye 3-phase systems.
125
Liebert® DS™
Heat Rejection—Liebert MC™
12.5
Liebert MC™ Dimensions
Figure 100 Condenser planning dimensions—MCM080, MCL110 with/without Liebert Lee-Temp
575V
Option
575V
Option
G
A*
™
A
H
Top of
Fan Guard
F
Liebert Lee-Temp
Entering Hot Gas
and Leaving
Liquid Piping
C
D
Anchor
Plan
A
Main
Electric
Box
End
Full height leg
supplied for each
Liebert Lee-Temp
Receiver Required
Left Side of Unit
Emerson recommends a clearance of
36" (915mm) on each side for proper
operation and component access.
1/2" x 1"
(13mm x 25mm)
Obround Typical
DETAIL A
Typical of all Legs
MCS056
MCM080
MCL110
FRONT VIEW
(Liebert Lee-Temp Shown)
1-7/8" (48mm)
Typical
7"
(178mm)
Typical
Liebert
Model No.
6-1/2"
(165mm) Ref
6-1/2"
Dual Circuit Only
(165mm) Ref
15-1/4"
15-1/4"
K
(387mm)
(387mm)
Dual Circuit Only
J
Liebert Lee-Temp Only
3-5/8"
(93mm)
Typical
13/16"
(21mm)
Typical
M L K
DPN003437
Rev. 1
A
in. (mm)
A*
(575V Only)
in. (mm)
C
in. (mm)
D
in. (mm)
J
Liebert Lee-Temp
Only
K
in. (mm)
L
in. (mm)
M
in. (mm)
94-7/8
(2411)
105-1/4
(2674)
124-1/8
(3152)
103-1/8
(2619)
113-7/16
(2882)
133-1/8
(3381)
88-3/8
(2245)
96-1/16
(2440)
112-1/8
(2848)
86-3/4
(2203)
94-7/16
(2398)
110-1/2
(2806)
42-1/2
(1079)
46-5/16
(1177)
54-3/8
(1381)
42-1/2
(1080)
46
(1168)
55-1/2
(1410)
40-7/8
(1038)
44-3/8
(1127)
53-7/8
(1368)
35-7/8
(910)
39-5/16
(999)
48-3/4
(1238)
Source: DPN003437, Rev. 1
Liebert Model No.
MCS 056
Dimension G, in. (mm)
Dimension H, in. (mm)
MCM080
Dimension G, in. (mm)
Dimension H, in. (mm)
MCL110
Dimension G, in. (mm)
Dimension H, in. (mm)
F 1 (Leg Height Dimensions) , in. (mm)
18 (457)
31-5/8 (803)
39-5/8 (1006)
18 (457)
31-5/8 (803)
39-5/8 (1006)
36 (914)
49-5/8 (1260)
57-5/8 (1464)
36 (914)
49-5/8 (1260)
57-5/8 (1464)
48 (1219)
61-5/8 (1565)
69-5/8 (1768)
48 (1219)
61-5/8 (1565)
69-5/8 (1768)
60 (1524)
73-5/8 (1870)
81-5/8 (2073)
60 (1524)
73-5/8 (1870)
81-5/8 (2073)
35-7/8 (911)
43-5/8 (1108)
53-7/8 (1368)
61-5/8 (1565)
65-7/8 (1673)
73-5/8 (1870)
77-7/8 (1978)
85-5/8 (2175)
1. Cross-bracing required for legs longer than 18". Number of legs varies per model and options.
2. Source: DPN003437, Rev. 1
Liebert® DS™
126
Heat Rejection—Liebert MC™
Figure 101 Condenser planning dimensions—MCM160, MCL220 with/without Liebert Lee-Temp™
575V
Option
575V
Option
B
Lifting Eyebolts
Typ. (4) Places
F
A*
A
G
H
Top of
Fan Guard
Liebert Lee-Temp
Receiver
Entering Hot Gas
and Leaving
Liquid Piping
C
E
D
54-3/16
(1376mm)
Typical
A
Full height leg
supplied for each
Liebert Lee-Temp
Receiver Required
Anchor
Plan
Main
Electric
Box
End
M L K
6-1/2"
(165mm) Ref
13/16"
(21mm)
Typical
J
Left Side of Unit
3-5/8"
(93mm)
Typical
15-1/4"
(387mm)
K
FRONT VIEW
Emerson recommends a clearance of
36" (915mm) on each side for proper
operation and component access.
7"
(178mm)
Typical
6-1/2"
(165mm) Ref.
Dual Circuit Only
15-1/4"
(387mm)
Liebert Lee-Temp
Only
(Liebert Lee-Temp Shown)
1-7/8"
(48mm)
Typical
1/2" x 1"
(13mm x 25mm)
Obround Typical
DETAIL A
Typical of all Legs
DPN003439
Rev. 1
Liebert
Model No.
A
in. (mm)
A*
(575V Only)
in. (mm)
B
in. (mm)
C
D
E
in. (mm) in. (mm) in. (mm)
J
Liebert Lee-Temp
Receivers Only
MCM160
202-7/16
(5142)
210-5/8
(5350)
113-1/2
(2883)
192-1/4 94-7/16 96-3/16
(4883) (2398) (2444)
46-5/16
(1177)
46
(1168)
44-3/8
(1127)
39-5/16
(999)
MCL220
236-5/16
(6003)
245-5/16
(6231)
129-9/16 224-3/8 110-1/2 112-1/4
(3291)
(5699) (2806) (2851)
54-3/8
(1381)
55-1/2
(1410)
53-7/8
(1368)
48-3/4
(1238)
K
L
M
in. (mm) in. (mm) in. (mm)
Source: DPN003439, Rev. 1
F 1 (Leg Height Dimensions) , in. (mm)
Liebert Model No.
MCM160
18 (457)
36 (914)
48 (1219)
60 (1524)
Dimension G, in. (mm)
31-5/8 (803)
49-5/8 (1260)
61-5/8 (1565)
73-5/8 (1870)
Dimension H, in. (mm)
39-5/8 (1006
57-5/8 (1464)
69-5/8 1768)
81-5/8 (2073)
Dimension G, in. (mm)
35-7/8 (911)
53-7/8 (1368)
65-7/8 (1673)
77-7/8 (1978)
Dimension H, in. (mm)
43-5/8 (1108)
61-5/8 (1565)
73-5/8 (1870)
85-5/8 (2175)
MCL220
1. Cross-bracing required for legs longer than 18". Number of legs varies per model and options.
2. Source: DPN003439, Rev. 1
127
Liebert® DS™
Heat Rejection—Liebert MC™
12.6
Piping Connections
Figure 102 Piping connections—Liebert MC
™
dual-circuit, two-fan and four-fan units
* Cover
Vertical
Inverted traps
are factory provided
inside condenser
Leaving Liquid
Line
Field Piping
Horizontal
Entering Hot
Gas Line
DETAIL A
Circuit #1
Circuit #2
Optional fusible plug service kit to
be brazed into the liquid line(s) in
either the vertical or horizontal
position (where required).
(Vertical position is suggested,
horizontal position is optional.)
For two circuit systems, one
fusible plug kit must be
installed in each circuit.
Table 31
A
DPN002425
Rev. 5
* Shipping cover is not necessary
for proper condenser operation and
may be recycled if field piping
interferes with proper reattachment.
Liebert MC piping connection sizes—Liebert MC dual-circuit, two-fan and four-fan units
Connection Sizes, OD, in
Model #
# of
Fans
Hot Gas Line
Liquid Line
MCS056
2
7/8
5/8
MCM080
2
7/8
5/8
MCL110
2
1-1/8
7/8
MCM160
4
1-1/8
7/8
MCL220
4
1-3/8
1-1/8
Source: DPN002425, Rev. 5
Liebert® DS™
128
Heat Rejection—Liebert MC™
Figure 103 Piping dimensions—Liebert MC™ dual-circuit condensers with Liebert Lee-Temp™
Hot Gas Line
To Condenser
Entering Hot
Gas Line
C View
B View
* Cover
* Shipping cover is not necessary for proper
condenser operation and may be recycled if field
piping interferes with proper reattachment
Position elbow to
direct relief valve
downward
Leaving
Liquid Line
B View
Liquid Line
From Condenser
Fasten hot gas line to cabinet
using flat surface clamps with
isolators (field-supplied)
See Detail A A
Metal Clamp
Hot Gas Line
To Condenser
Isolator
Detail AA
GENERAL ARRANGEMENT
Liebert-supplied piping assembly
will include one or two valve and check
valves, depending on condenser
capacity and refrigerant
Field Piping
Entering Hot
Gas Line
Liquid Line
From Condenser
Leaving
Liquid Line
Position elbow to
direct relief valve
downward
C View
Note:
1. The following materials are supplied by Emerson for each circuit (shipped loose with condenser)
for field installation: insulated Liebert Lee-Temp receiver tank with sight glasses, piping assembly
with head pressure control valve, check valve, rotalock valve and pressure relief valve. All other piping
and electrical wiring to be supplied and installed by others. An additional condenser leg per circuit
to be shipped with the condenser.
2. Consult factory for proper line sizing for runs longer than 150ft. (45.7m) equivalent length.
Table 32
DPN002426
Rev. 6
™
Piping dimensions—Liebert MC dual-circuit condensers with Liebert Lee-Temp
Condenser Connections
ODS, in.
Liebert Lee-Temp Connections
Liquid Line
to Liebert Lee-Temp
Valve ODS, In.
Receiver Out
Rotalock
IDS, in.
Model #
Circuit No.
Hot Gas
Liquid
Hot Gas Tee
IDS, in.
MCS056
2
7/8
5/8
7/8
5/8
5/8
MCM080
2
7/8
5/8
7/8
5/8
5/8
MCL110
2
1-1/8
7/8
1-1/8
7/8
7/8
MCM160
2
1-1/8
7/8
1-1/8
7/8
1-1/8
MCL220
2
1-3/8
1-1/8
1-3/8
1-1/8
1-1/8
Source: DPN002426, Rev. 6
129
Liebert® DS™
Heat Rejection—Liebert MC™
12.7
Electrical Field Connections—Liebert MC™
Figure 104 Electrical field connections—Liebert MC premium efficiency control, with and without Liebert
™
Lee-Temp
Fan 2
Fan 2
Liebert Lee-Temp receiver tank 1 per circuit).
NOTE: Heater pad voltage available for
120V/1ph/60Hz or 230V/1ph/60Hz
150 or 300 watt, varies by condenser.
Fan 1
Fan 1
Electrical connection
box; cover removed
for clarity
Without Liebert
Lee-Temp
Electrical service connection.
With Liebert
Lee-Temp
Pigtails in electric handy box
are factory-wired to Liebert Lee-Temp
heater pads for field-connection
of separate continuous electric
source; wire not by Emerson.
1
+
5A
5B
+
6
7
ALARM RELAY CARD
XX
XX
xxxxxxx
xxxxxxx
xxxxxxxxxxxxxx
xxxxxxx
xxxxxxx
xxxxxxxxxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
5C
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxx
+
4
8
12
13
9
Item appears only with
Liebert Lee-Temp board
Liebert® DS™
11
Left Knockout
3
Right Two
Knockouts
See on page 131 for key to numbered
components
70
71
230
NOTICE!
THIS HOLE FOR FIELD
SUPPLIED EXTRA LOW
VOLTAGE CONTROL WIRING
2
+
xxxxxxx
xxxxxxx
xxxxxxx
xxxxxxx
10
+
DPN002169
Pg. 1, Rev. 7
DPN002374
Pg. 1, Rev. 6
130
Heat Rejection—Liebert MC™
Key Electrical Details; Source: DPN002169, Rev. 7 and DPN002374 Rev. 6
1. Three-phase electrical service—Terminals are on top of disconnect switch for one-fan and
two-fan units. Terminals are on bottom of disconnect switch for three-fan and four-fan units.
Three-phase service not by Emerson. See Note 5.
2. Earth ground—Field lug terminal for earth ground connection. Ground terminal strip for fan
motor ground connection.
3. Primary high-voltage entrance—Two knockouts, each 7/8" (22.2mm) diameter, at the bottom
of the enclosure.
4. SPD field connection terminals—High-voltage surge protection device (SPD) terminals. SPD
is an optional device.
5. CANbus terminal connections—Field terminals for CANbus cable connection.
• 5A is the CANbus connectors
• TB49-1 is the input terminal for CANbus high
• TB49-3 is the input terminal for CANbus low
• TB50-1 is output terminal for CANbus high
• TB50-3 is the output terminal for CANbus low
• Each CANbus cable shield is connected to terminal “SH”, Item 9.
• 5B is the “End of Line” jumper.
• 5C is the CANbus “Device Address DIP Switch.” CANbus cable not by Emerson. See Note 2.
6. Remote unit shutdown—Replace exiting jumper between terminals TB38-1 and TB38-2 with
field-supplied normally closed switch having a minimum 75VA 24VAC rating. Use field-supplied
Class 1 wiring. (This is an optional feature that may be owner specified.)
7. Alarm terminal connections
a. Common Alarm Relay indicates when any type of alarm occurs. TB74-1 is common; TB74-2 is
normally open; and TB74-3 is normally closed. 1 Amp 24VAC is the maximum load. Use
field-supplied Class 1 wiring.
b. Shutdown Alarm Relay indicates when condenser loses power or when a critical alarm has
occurred that shuts down the condenser unit. TB74-4 is common; TB74-5 is normally open;
and TB74-6 is normally closed. 1A 24VAC is the maximum load. Use field-supplied Class 1
wiring.
8. Indoor unit interlock and SPD alarm terminals
a. On any call for compressor operation, normally open contact is closed across Terminals 70 and
71 for Circuit 1, and normally open contact is closed across Terminals 70 and 230 for Circuit 2
from indoor room unit.
b. During SPD alarm, normally open contact is closed across Terminals 12 and13. SPD is an
optional device.
9. CANbus shield terminal—Terminal for field connection of the field-supplied CANbus cables.
Shield of field-supplied CANbus cables must not be connected to ground at the condenser.
10. Primary low-voltage entrance—One knockout, 7/8" (22.2mm) diameter, that is free for
customer low-voltage wiring.
11. SPD entrance—One knockout, 7/8" (22.2mm) diameter, at the bottom of the enclosure.
High-voltage surge protective device (SPD) is optional.
131
Liebert® DS™
Heat Rejection—Liebert MC™
Notes
1. Refer to specification sheet for unit voltage rating, full load amp, and wire size amp ratings.
2. The CANbus wiring is field supplied and must be:
• Conductors 22-18AWG stranded tinned copper
• Twisted pair (minimum 4 twists per foot)
• Braided shield or foil shield with drain wire
• Shield must be wired to ground at indoor unit
• Low Capacitance (15pf/ft or less)
• UL approved temperature rated to 75°C
• UL approved voltage rated to 300V
• UV-resistant and moisture-resistant if not run in conduit
• Examples: Belden part number 89207(plenum rated) or Alpha Wire part number 6454 (UV
resistant outdoor rated) Category 5, 5e or higher. Do not run the CANbus cable in the same
conduit, raceway or chase as high-voltage.
3. Do not run the CANbus cable in the same conduit, raceway or chase as high-voltage.
4. No special considerations are required when the total external cable connection between the
indoor unit and outdoor unit(s) is less than 450ft. (137m). For total external cable connections
greater than 450ft. (137m) but less than 800ft. (243m), a CANbus isolator is required.
5. All wiring must be sized and selected for insulation case per NEC and other local codes.
6. Do not bend cables to less than four times the diameter of the cable.
7. Do not deform cables when securing in bundles or when hanging them.
8. Avoid running the cables by devices that may introduce noise, such as machines, fluorescent
lights and electronics.
9. Avoid stretching cables.
10. Separate high volt wires and other high-voltage sources from CAN wires by 12 inches.
11. The electrically commutated (EC) motors included in the Liebert MC™ Condenser are suitable for
connection to power supplies with a solidly grounded neutral. (Some platforms can accept power
supplies listed under Item b below. Contact the factory for more information.)
a. Acceptable power supplies for 208 to 575V nominal units
• 208V wye with solidly grounded neutral and 120V line to ground;
• 380V wye with solidly grounded neutral and 220V line to ground;
• 480V wye with solidly grounded neutral and 277V line to ground.
• 575V wye with solidly grounded neutral and 332V line to ground. (uses step-down
transformer)
b. Non-acceptable power supplies for 208V to 575V nominal units
• wye with high resistance (or impedance) ground;
• delta without ground or with floating ground;
• delta with corner ground; or
• delta with grounded center tap.
Liebert® DS™
132
Heat Rejection—Liebert Fin/Tube Condensers
13.0 HEAT REJECTION—LIEBERT FIN/TUBE CONDENSERS
Table 33
Liebert DS air-cooled condenser selection, finned-tubular design, R-407C
Ambient Temperature, °F (°C)
Outdoor Condenser
Outdoor Quiet-Line Condenser
Liebert DS
Model
95 (35)
100 (38)
105 (41)
95 (35)
100 (38)
105 (41)
028
TCDV/CD*-205
TCDV/CD*-205
TCDV/CD*-251
TCDV/CD*-214
TCDV/CD*-214
TCDV/CD*-286
035
TCDV/CD*-205
TCDV/CD*-205
TCDV/CD*-251
TCDV/CD*-214
TCDV/CD*-214
TCDV/CD*-286
042
TCDV/CD*-205
TCDV/CD*-251
TCDV/CD*-308
TCDV/CD*-286
TCDV/CD*-286
TCDV/CD*-409
053
TCDV/CD*-251
TCDV/CD*-308
TCDV/CD*-415
TCDV/CD*-286
TCDV/CD*-409
TCDV/CD*-409
070
TCDV/CD*-308
TCDV/CD*-415
TCDV/CD*-415
TCDV/CD*-409
TCDV/CD*-572
TCDV/CD*-572
077
TCDV/CD*-308
TCDV/CD*-415
TCDV/CD*-616
TCDV/CD*-409
TCDV/CD*-572
TCDV/CD*-572
105
TCDV/CD*-415
TCDV/CD*-616
TCDV/CD*-616
TCDV/CD*-572
N/A
N/A
Table 34
Fin/tube condenser physical data and R-407C refrigerant required per condenser circuit
Connection Size,
OD, In.
Table 35
Model #
Liquid
Net Weight
lb (kg)
FSC or VFD
Liebert Lee-Temp™
(includes receiver)
1-1/8
1-1/8
1-3/8
1-3/8
1-5/8
7/8
7/8
1-1/8
1-1/8
1-1/8
495 (225)
500 (227)
670 (304)
840 (381)
1380 (626)
7 (3.2)
10 (4.6)
11 (5.0)
24 (10.9)
26 (11.8)
54 (24.4)
36 (16.3)
55 (24.9)
102 (46.2)
108 (49.0)
1-1/8
1-1/8
1-5/8
2-1/8
7/8
7/8
1-1/8
1-1/8
840 (381)
1105 (501)
1380 (626)
2430 (1102)
N/A
N/A
N/A
N/A
77 (34.9)
119 (54.0)
148 (67.2)
186 (84.4)
Number
of Fans
Number
of Circuits
Hot Gas
2
3
3
4
6
2
2
2
2
2
3
4
6
8
2
2
2
2
Model #
Standard Models
TCDV/CD*205
TCDV/CD*251
TCDV/CD*308
TCDV/CD*415
TCDV/CD*616
Quiet-Line Models
TCDV/DCD*214
TCDV/DCD*286
TCDV/DCD*409
TCDV/DCD*572
Dual-Circuit
lb/circuit (kg/circuit)
DS fin/tube condenser cfm and sound data
Number
of Fans
Horsepower
CFM
Sound Power
LwA
Sound Pressure
dBA 3
Standard Models
205
2
3/4
10300
91.0
75.5
251
3
3/4
17950
94.0
77.3
308
3
3/4
16650
93.8
77.3
415
4
3/4
20650
94.4
78.5
616
6
3/4
33300
96.8
80.3
1/4
6400
74.8
61.3
Quiet-Line Models
214
3
286
4
1/4
8275
76.2
62.5
409
6
1/4
13750
78.4
64.3
572
8
1/4
17050
79.9
65.5
133
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Condensers
13.1
Dimensions
Figure 105 Fin/tube condenser dimensions, 2-fan model
43-9/16"
(1106mm)
Emerson recommends a
clearance of 36" (915mm) on
each side for proper operation
and component access.
91-1/2"
(2324mm)
37-7/8"
(962mm)
18"
(457mm)
84"
(2134mm)
43-3/16"
(1097mm)
Figure 106 Fin/tube condenser dimensions, 3-fan and 4-fan models
43-9/16"
(1106mm)
Emerson recommends a clearance of 36" (915mm)
on each side for proper operation and component
access.
131-1/2"
(3340mm)
37-7/8"
(962mm)
43-9/16"
(1106mm)
171-1/2"
(4356mm)
18"
(457mm)
124"
(3150mm)
70"
(1778mm)
37-7/8"
(962mm)
Eyebolts
for Lifting
43-3/16"
(1097mm)
18"
(457mm)
Note:
Overall height to the top of fan guard
43-1/8" (1095mm)
164"
(4166mm)
43-3/16"
(1097mm)
Liebert® DS™
134
Heat Rejection—Liebert Fin/Tube Condensers
Figure 107 Fin/tube condenser dimensions, 6-fan and 8-fan models
131-1/2"
(3340mm)
87-1/8"
(2213mm)
Emerson recommends a clearance of 36" (915mm) on
each side for proper operation and component access.
87-1/8"
(2213mm)
171-1/2"
(4356mm)
37-7/8"
(962mm)
37-7/8"
(962mm)
59"
(1499mm)
18"
(457mm)
86-3/4"
(2203mm)
18"
(457mm)
124"
(3150mm)
Overalll height to the top
of the fan guard is 43-1/8” (1095mm).
70" (1778mm)
1-1/2" (38mm)
diameter hole for
rigging (typ.4)
164"
(4166mm)
86-3/4"
(2203mm)
135
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Condensers
13.2
Electrical Data
13.2.1 Electrical Data—Fin/Tube Condensers
Table 36
Fin/tube condenser data, 60Hz
Model #
Input
Voltage
ph
205
251, 308
415
616
2 Fans
3 Fans
4 Fans
6 Fans
FLA
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
8.3
9.5
15
11.8
13.0
15
15.3
16.5
20
23.6
24.8
30
4.2
4.8
15
5.9
6.5
15
7.6
8.2
15
11.8
12.4
15
3.3
3.8
15
4.7
5.2
15
6.1
6.6
15
9.4
9.9
15
7.2
8.1
15
10.7
11.6
15
14.2
15.1
20
N/A
N/A
N/A
3.5
4.0
15
5.2
5.7
15
6.9
7.4
15
N/A
N/A
N/A
Fan Speed Controlled
208/230
460
3
575
VFD Controlled
208/230
460
3
Lee-Temp Controlled/Fan-Cycling
208/230
460
3
575
7.0
7.9
15
10.5
11.4
15
14.0
14.9
20
21.0
21.9
25
3.4
3.8
15
5.1
5.5
15
6.8
7.2
15
10.2
10.6
15
2.8
3.2
15
4.2
4.6
15
5.6
6.0
15
8.4
8.8
15
FLA = Full Load Amps; WSA = Wire Size Amps; OPD = Maximum Overcurrent Protection Device
Table 37
Model #
Input
Voltage
™
Fin/tube condenser data, Liebert Quiet-Line
ph
ph
208/230
460
3
575
(Liebert Lee-Temp
286
409
572
3 Fans
4 Fans
6 Fans
8 Fans
FLA
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
5.4
5.9
15
7.2
7.7
15
10.8
11.3
15
14.4
14.9
20
2.7
2.9
15
3.6
3.8
15
5.4
5.6
15
7.2
7.4
15
2.1
2.3
15
2.8
3.0
15
4.2
4.4
15
5.6
5.8
15
Liebert Lee-Temp receiver electrical data, fin/tube condensers
Rated Voltage - Single Phase
Watts/Receiver
120
150
200/208/230
300
150
300
Full Load Amps
1.25
2.5
0.7
1.4
Wire Size Amps
1.56
3.1
0.9
1.8
15
15
15
15
Maximum Overcurrent
Protection Device, Amps
The Liebert Lee-Temp receiver requires a separate power feed for heaters. The
condenser is not designed to supply power to the receiver.
Liebert® DS™
controlled/fan-cycling), 60Hz
214
FLA = Full Load Amps; WSA = Wire Size Amps; OPD = Maximum Overcurrent Protection Device
Table 38
™
136
Heat Rejection—Liebert Fin/Tube Condensers
13.2.2 Electrical Field Connections—Liebert Fin/Tube Condensers
Figure 108 Electrical field connections for Fan Speed Control fin/tube condensers
Electric service connection
and fuse block
Factory-wired to 24V
control circuit.
Heat Rjection
Connection 70, 71
Field-supplied
Class 2 wiring to
interlock condenser 24V
controls to Liebert indoor
unit (70, 71). Refer to the
condenser and indoor unit
electrical schematics for
termination. 7/8 in (22.2mm)
diameter hole provided in
bottom of electric box.
Electric Service Connection
terminals when factory
disconnect is NOT supplied
70
Electric Service Connection
terminals when factory
disconnect is supplied.
71
Factory-installed disconnect
switch (optional).
Factory-wired to components on
electric panel.
Electric Service Entrance.
A 7/8 in. (22.2mm) diameter hole in
a 1-1/18 in. (28.6mm) knockout
provided in bottom of electric box.
Earth Ground Bar (optional on 50Hz only).
Connection terminals with factory
ground from each high-voltage
component for field-supplied
earth grounding wire.
Earth ground connection (60Hz)
Connection terminal for fieldsupplied earth grounding wire
when factory disconnect is NOT
supplied.
Earth ground connection (60Hz)
Connection terminal for fieldsupplied earth grounding wire
when factory disconnect is supplied.
Refer to specification sheet for full load
amp and wire size amp ratings.
137
Electric Service, not by Emerson.
Single phase for condenser
models CSF, CDF with single
fan motor. Three phase for
all other condenser models.
DPN000666
Rev. 1
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Condensers
Figure 109 Electrical field connections for VFD control fin/tube condensers
Factory-wired to 24V
control circuit.
Heat Rjection
Connection 70, 71
Field-supplied
Class 1 wiring to
interlock condenser 24V
controls to Liebert indoor
unit (70, 71). Reference the
condenser and indoor unit
electrical schematics for
termination. 7/8" (22.2mm)
diameter hole provided in
bottom of electric box.
Factory installed fuse block on
60Hz units. Circuit breaker supplied
in lieu of fuse block on 50Hz units.
Electric Service Connection
terminals with factory
supplied disconnect.
70
71
11
12
13
14
V
F
D
SPD
Special Alarm Connections
Field- supplied 24V Class 1
wiring to remote alarm circuits
Surge Protection Device (SPD)
normally open alarm contact connections (11, 12).
Variable Frequency Drive (VFD)
normally closed alarm contact connections (13, 14).
Reference the indoor unit electric
diagram (RAD1-4) for termination.
Electric Service Entrance.
A 7/8" (22.2mm) diameter hole in
a 1-1/18" (28.6mm) knockout
provided in bottom of electric.
Factory-wired to components
on electric panel.
Earth Ground BAR (optional
on 50Hz only).
Connection terminals with factory
ground from each high-voltage
component for field-supplied
earth grounding wire.
Refer to specification sheet
for full load amp and wire size amp ratings
Earth Ground Connection (60Hz)
Connection terminal for fieldsupplied earth grounding wire
when factory disconnect is supplied.
Liebert® DS™
Factory-installed
disconnect switch
138
Electric service,
not by Emerson
DPN001051
Rev. 2
Heat Rejection—Liebert Fin/Tube Condensers
Figure 110 Electrical field connections for Liebert Lee-Temp™ control fin/tube condensers
Liebert Lee-Temp receiver tank
(1 per circuit).
NOTE: Standard heater pads
are 150 Watts each. (Optional
300 Watts heater pads are
available.) Standard heater
pad voltage is 230V. (120V
heater pad voltage is optional.)
Electric connection box
with cover
Electrical service connection.
Pigtails in electric handy
box are factory-wired to
Liebert Lee-Temp
heater pads for field
connection of separate
continuous electric source,
wiring not by Emerson.
Electric service connection
and fuse block
Factory-wired to 24V
Class 2 control circuit.
Heat Rjection
Connection 70, 71
Field-supplied
Class 2 wiring to
interlock condenser 24V
controls to Liebert indoor
unit (70, 71). Refer to the
condenser and indoor unit
electrical schematics for
termination. 7/8 in (22.2mm)
diameter hole provided in
bottom of electric box.
70
Electric service connection
terminals when factory
disconnect is NOT supplied.
71
Electric service connection
terminals when factory
disconnect is supplied.
Factory-wired to components on
electric panel
Factory-installed disconnect
switch (optional).
Earth ground bar (optional on 50Hz only).
Connection terminals with factory
groubd from each high-voltage
component for field-supplied
earth grounding wire.
Electric Service Entrance.
A 7/8 in. (22.2mm) diameter hole in
a 1-1/18 in. (28.6mm) knockout
provided in bottom of electric box.
Earth ground connection (60Hz)
Connection terminal for fieldsupplied earth grounding wire
when factory disconnect is NOT
supplied.
Earth ground connection (60Hz)
Connection terminal for field-supplied
earth grounding wire when factory
disconnect is supplied
Refer to specification sheet for full
load amp and wire size amp ratings.
139
DPN000683
Rev. 1
Electric Service,
not by Emerson.
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Condensers
13.3
Piping Connections
Figure 111 VFD and Fan Speed Control condenser piping—Fin/tube condensers
Optional fusible plug service kit to
be brazed into the liquid line(s) in
either the vertical or horizontal
position (where required).
(Vertical position is preferable,
horizontal position is optional.)
For two-circuit systems, one
fusible plug kit must to
be installed in each circuit.
Entering Hot
Gas Line
Leaving
Liquid Line
Inverted Traps (field-supplied)
to extend a minimum of
7-1/2" (190mm) above coil base
Metal
Clamp
Vertical
Horizontal
See
Detail
A-A
Fasten liquid and hot gas lines to leg using
flat surface clamps with isolators (field-supplied).
Support field piping separately to avoid coil damage
and loss of charge.
Liebert® DS™
140
Isolator
Detail A-A
DPN001065
Rev. 1
Heat Rejection—Liebert Fin/Tube Condensers
Figure 112 Liebert Lee-Temp™ head pressure control condenser piping—Fin/tube condensers
Metal
Clamp
Isolator
Detail A-A
This view is shown
with header cover
removed.
Discharge Line
from Unit (field-supplied)
Discharge Line
from Unit
(field-supplied)
Position elbow to direct
relief valve downward
Liquid Return
Line to Unit
(field-supplied)
Hot Gas Line
(field-supplied)
Liquid Line
(field-supplied)
Inverted Traps (field-supplied)
to extend at least 7-1/2" (190mm)
above coil base
Fasten liquid and hot gas lines
to leg using flat surface clamps
with isolators (field-supplied).
Support field piping separately
to avoid coil damage and loss
of charge. See Detail A-A.
Liquid return line to
unit (field supplied
Position elbow to direct
relief valve downward
The following materials are supplied by Emerson
for each circuit (shipped loose with condenser)
for field installation: insulated Liebert Lee-Temp
storage tank with two sight glasses, head
pressure control valve, check valve, rotalock
valve and pressure relief valve. All other
piping to be supplied and installed by others.
DPN000669
Rev. 4
141
Liebert® DS™
Heat Rejection—Liebert Piggyback Condensers, Air-Cooled
14.0 HEAT REJECTION—LIEBERT PIGGYBACK CONDENSERS, AIR-COOLED
Table 39
Liebert DS piggyback condenser selection
Air-Cooled Condenser Selection
Condenser
Type
Ambient
Temp. °F (°C)
028
035
042
053
070
077
105
95 (35)
PB-925
PB-925
PB-1100
PB-1350
N/A
N/A
N/A
100 (38)
PB-1100
PB-1100
PB-1350
N/A
N/A
N/A
N/A
105 (41)
PB-1100
PB-1350
N/A
N/A
N/A
N/A
N/A
Piggyback
Table 40
Liebert DS Size
Piggyback condenser physical data, 60Hz
Number
of Circuits
Model
Connection Size, OD, In.
Hot Gas
Condenser Charge Per Circuit
R-407C, lb (kg)
Liquid
PB-350
2
5/8
1/2
18 8.2)
PB-550
2
5/8
1/2
17 (7.8)
PB-675
2
7/8
1/2
25 (11.2)
PB-925
2
7/8
1/2
22 (9.9)
PB-1100
2
1-1/8
5/8
34 (15.5)
PB-1350
2
1-1/8
5/8
34 (15.5)
Table 41
Piggyback condenser airflow, and static pressure data
HP/RPM
Ext. Static Pressure - in. (Pa)
Model
No.
of Fans
CFM / m / hr
0.25 (62.3)
0.50 (125)
0.75 (187)
1.0 (249)
PB-350A
2
7600/12,920
2/580
3/650
3/720
3/790
PB-550A
2
6600/11,200
2/575
3/650
3/725
3/800
PB-675A
2
6900/11,730
2/605
3/680
3/750
3/820
PB-925A
2
12,500/21,250
7.5/760
7.5/810
7.5/870
7.5/920
PB-1100A
2
12,300/20,910
7.5/780
7.5/830
7.5/890
7.5/940
PB-1350A
2
16,500/28,050
10/640
10/695
10/740
15/790
3
Values are without filter box. External Static Pressure = filter pressure drop + other static drops.
Source: DPN000695, Rev. 1
Piggyback condenser electrical data, 60 Hz, 3 phase 1
Table 42
208
hp
230
FLA
460
FLA
LRA
LRA
FLA
2.0
7.5
55
6.8
50
3.0
10.6
71
9.6
64.0
5.0
16.7
102
15.2
92
7.5
24.2
140
22.0
127
10.0
30.8
179
28.0
162.0
14.0
575
LRA
FLA
LRA
3.4
25
2.7
20
4.8
32.0
3.9
25.6
7.6
46
6.1
36.8
11.0
63.5
9.0
50.8
81
11.0
64.8
15.0
46.2
257
42.0
232
21.0
116.0
17.0
93.0
1. See Table 43 for separate power feed needed for Lee-Temp receiver heaters.
2. FLA: Full Load Amps; LRA: Lock Rotor Amps
3. Source: DPN000695, Rev. 1
Table 43
Separate electrical supply requirements for Liebert Lee-Temp™ receivers, 60Hz, 1 ph
Voltage
120
120
208/230
208/230
Watts/Receiver
150
300
150
300
FLA
2.5
5.0
1.4
2.8
WSA
3.1
6.2
1.8
3.6
OPD
15
15
15
15
Only one independent input power supply is needed per piggyback unit; connect to Terminals 90 & 91.
Liebert® DS™
142
Heat Rejection—Liebert Piggyback Condensers, Air-Cooled
14.1
Dimensions
Figure 113 Piggyback condenser planning dimensions
E
K
1-1/8"
(29mm)
H
J
K
Overa
ll Dim
ensio
ns
sions
Dimen
Overall
Optional Fan
Discharge
Disconnect
Switch (optional)
S
H
J
35-1/8"
(892mm)
D
B
R
72"
(1829mm)
R
Fan Discharge
Shaded areas
indicate a recommended
clearance of 34" (864mm)
for component access.
5"
(127mm)
G
Condenser Coil Inlet
And Duct Connection
C
Drain Outlet
Opening
C
Unit Base
10" (254mm)
1"
(25.4mm)
A
Unit Base
UNIT DIMENSIONAL DATA
F
NOTE: A 1" (25.4mm) flange is provided on all units
for duct connection to coil duct opening and
fan air discharge opening.
Floor Level
A
DPN000695
Rev. 1
FLOOR CUTOUT DIMENSIONS
Table 44
Piggyback condenser dimensions, in. (mm)
Model
A
B
C
D
E
F
G
H
J
K
R
S
PB-350A
72
(1829)
74
(1880)
31
(787)
32
(813)
1-1/8
(29)
33
(838)
60
(1524)
8-5/8
(219)
50-3/16
(1275)
16-1/16
(408)
13-3/16
(335)
14-11/16
(373)
PB-550A
72
(1829)
74
(1880)
31
(787)
32
(813)
1-1/8
(29)
33
(838)
60
(1564)
8-5/8
(219)
50-3/16
(1275)
16-1/16
(408)
13-3/16
(335)
14-11/16
(373)
PB-675A
72
(1829)
74
(1880)
31
(787)
32
(813)
1-1/8
(29)
33
(838)
60
(1564)
8-5/8
(219)
50-3/16
(1275)
16-1/16
(408)
13-3/16
(335)
14-11/16
(373)
PB-925A
97
(2464)
99
(2515)
33
(838)
34
(864)
3-1/8
(79)
45-1/2
(1156)
85
(2159)
23-5/16
(592)
50-3/16
(1275)
16-1/16
(408)
23-1/2
(597)
14-11/16
(373)
PB-1100A
97
(2464)
99
(2515)
33
(838)
34
(864)
3-1/8
(79)
45-1/2
(1156)
85
(2159)
23-5/16
(592)
50-3/16
(1275)
16-1/16
(408)
23-1/2
(597)
14-11/16
(373)
PB-1350A
97
(2464)
99
(2515)
33
(838)
34
(864)
3-1/8
(79)
45-1/2
(1156)
85
(2159)
16-5/16
(421)
63-7/8
(1622)
19-1/8
(486)
16-13/16
(427)
11-5/8
(295)
Source: DPN000695, Rev. 1
143
Liebert® DS™
Heat Rejection—Liebert Piggyback Condensers, Air-Cooled
Figure 114 Floor stand dimensions, piggyback condensers with forward-curved blowers
C
B
A
1"
(25.4mm)
* H ± 1-1/2" (38mm)
For height selection
refer to chart.
Center Leg Provided
on 99" Cabinets
See Table 46 for
height selection
Leg Support on Models
18, 21 & 24" High
Table 45
Floor stand dimensions, in. (mm)
A
Model
B
C
PB-350A, PB-550A PB-675A
72 (1829)
36 (914)
31 (787)
PB-925A, PB-1100A PB-1350A
97 (2464)
48-1/2 (1232)
33 (838)
Source: DPN000727, Rev. 0
Table 46
Floor stand height selection, in. (mm)
Nominal
Range (Nominal ±1-1/2 *)
9 (229)
7-1/2 to 10-1/2 (191 to 267)
12 (305)
10-1/2 to 13-1/2 (267 to 343)
15 (381)
13-1/2 to 16-1/2 (343 to 419)
18 (458)
16-1/2 to 19-1/2 (419 to 495)
21 (553)
19-1/2 to 22-1/2 (495 to 572)
24 (610)
22-1/2 to 25-1/2 (572 to 648)
1. Leveling feet are provided with ±1-1/2" (38mm) adjustment from nominal height “H”.
2. Source: DPN000727, Rev. 0
Liebert® DS™
144
DPN000727
Rev. 0
Heat Rejection—Liebert Piggyback Condensers, Air-Cooled
14.2
Electrical Field Connections—Liebert Piggyback Condensers
Figure 115 Electrical field connections for Liebert piggyback condensers
Factory-installed unit
disconnect switch (optional)
Field-supplied disconnect
switch when factory-installed
unit disconnect switch is not provided.
Three phase electric
service not by
Emerson
Three-phase connection. Electric
service connection terminals
when factory disconnect switch
is supplied
Three-phase connection.
Electric service
connection terminals
when factory disconnect
switch is not supplied
Factory-installed disconnect
switch (optional)
Electric conduit knockouts
on bottom of wire raceway
Knockout sizes 1-3/8"
(34.9mm) or 1-3/4" (44.5mm)
or 2 1/2" (63.5mm)
Three-phase electric
service not by Emerson
Factory-wired to
Earth ground connection (60Hz).
components
Connection terminal for field-supplied
on electric panel.
earth grounding wire.
Liebert Lee-Temp electric
Factory-wired to components
service connection to
on electric panel
terminals supplied from
factory-wired Liebert
Control interlock Field-supplied, Class 2 wiring to
Lee-Temp heater pads
Terminals 70 & 71 to interlock condenser 24V
for field connection of separate
controls to Liebert room unit; 7/8 in. (22.2mm)
continuous electrical source,
diameter knockout provided in bottom of box
not supplied by Emerson.
DPN000697
Rev. 0
Refer to specification sheet for full load amp and wire size amp ratings.
71
70
91
90
145
Liebert® DS™
Heat Rejection—Liebert Piggyback Condensers, Air-Cooled
14.3
Connection Locations—Liebert Piggyback Condensers
Figure 116 Piggyback condenser piping and electrical connection locations
See Note 2
See
Note 2
See Note 1
See
Note 1
A
1-13/16"
(46mm)
C
B
C
G
1-13
/16"
(46m
m)
E
See Note 3
E
D
F
D
See Note 2
3" (76mm)
3" (76mm)
1" (25mm)
Panel
1" (25mm)
Panel
3" (76mm)
3" (76mm)
See Note 2
See Note 2
3" (76mm)
See Note 1
3" (76mm)
E See Note 3
See Note 1
E See Note 3
12-5/8"
(321mm)
9-11/16"
(246mm)
12-5/8"
(321mm)
4-1/2" (114mm)
4-1/2"
(114mm)
9-11/16"
(246mm)
7-7/8"
(200mm)
7-7/8"
(200mm)
MODELS PB-350A THRU PB-1100A
MODEL PB-1350A
5-1/2" (140mm) See Note 1
3-1/4" (85mm) See Note 2
Drain Outlet
Location
1-1/4" (32mm) F.P.T.
3"
(76mm)
8"
(203mm)
6"
(152mm)
3"
(76mm)
See Note 3
ALL MODELS
1-1/2"
(38mm)
1. Multiple knockouts of 1-3/8" (35mm), 1-3/4" (45mm) and 2-1/2" (64mm) for main power supply (typical).
2. 7/8" (22.2mm) knockouts for Liebert Lee-Temp power supply (typical).
3. Cover plate for access of liquid line and hot gas line.
Table 47
DPN00696
Rev. 1
Dimensions—Piggyback condensers, in. (mm)
Model
A
B
C
D
E
F
G
PB-350A
—
—
27-1/4 (692)
2-1/2 (64)
6 (152)
10-1/8 (267)
28-3/4 (730)
PB-550A
—
—
27-1/4 (692)
2-1/2 (64)
6 (152)
10-1/8 (267)
28-3/4 (730)
PB-675A
—
—
27-1/4 (692)
2-1/2 (64)
6 (152)
10-1/8 (267)
28-3/4 (730)
PB-925A
—
—
27-1/4 (692)
2-1/2 (64)
6 (152)
10-1/8 (267)
28-3/4 (730)
PB-1100A
—
—
27-1/4 (692)
2-1/2 (64)
6 (152)
10-1/8 (267)
28-3/4 (730)
PB-1350A
11-1/4 (286)
24 (610)
26-1/2 (673)
7 (178)
6 (152)
—
—
Table 48
Piping connection sizes, ODS, in. (mm)
Model
Liquid Line
Hot Gas Line
Drain
PB-350A
2 @ 1/2 (13)
2 @ 5/8 (16)
1-1/4 (32)
PB-550A
2 @ 1/2 (13)
2 @ 5/8 (16)
1-1/4 (32)
PB-675A
2 @ 1/2 (13)
2 @ 7/8 (22)
1-1/4 (32)
PB-925A
2 @ 1/2 (13)
2 @ 7/8 (22)
1-1/4 (32)
PB-1100A
2 @ 5/8 (16)
2 @ 1-1/8 (29)
1-1/4 (32)
PB-1350A
2 @ 5/8 (16)
2 @ 1-1/8 (29)
1-1/4 (32)
™
See Figures 89 and 90 for piggyback condenser piping schematic with Liebert Lee-Temp .
Liebert® DS™
146
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
15.0 HEAT REJECTION—LIEBERT FIN/TUBE DRYCOOLERS AND PUMPS
15.1
Drycooler Selection—Prop Fan Drycoolers
Table 49
Liebert DS drycooler selection
Drycooler Type
Outdoor Drycooler
Outdoor Quiet-Line Drycooler
Liebert DS
Model
95°F (35°C)
100°F (38°C)
105°F (41°C)
95°F (35°C)
100°F (38°C)
105°F (41°C)
028
D-174
D-225-16
D-310-16
D-173-16
D-205-16
D-356-32
035
D-174
D-225-16
D-350-16
D-178-16
D-205-16
D-356-32
042
D-225-16
D-310
D-419
D-205
D-347-32
D-453-32
053
D-260
D-350
D-491-32
DD-248
D-347-32
D-453-32
070
D-310
D-419
D-620-32
D-347-32
D-453-32
D-453-32
077
D-350
D-466
D-650-40
D-347-32
D-453-32
N/A
105
D-466
D-620-32
D-880-52
D-453
N/A
N/A
15.2
Liebert Drycooler Data
Table 50
Model #
-174
-225
Liebert standard drycooler performance data, 60Hz
Number
of Fans
2
-260
-310
3
-350
-419
-466
4
-491
-620
-650
-880
6
8
Internal
Volume,
gal. (L)
Dry Weight
lb. (kg)
CFM, (l/s)
60Hz
Sound Power
LwA
Sound
Pressure
dBA
6.9 (26.2)
540 (245)
13265 (6261)
91.0
75.5
11.1 (42.1)
620 (281)
12177 (5748)
91.1
75.5
10.0 (37.8)
735 (333)
19898 (9392)
94.0
77.3
13.1 (50.0)
795 (361)
18965 (8951)
94.0
77.3
19.4 (73.3)
855 (388
17398 (8212)
94.0
77.3
17.4 (65.9)
1020 (463)
23650 (11163)
94.4
78.5
22.0 (83.3)
1050 (476)
22770 (10747)
94.4
78.5
26.3 (99.6)
1100 (499)
21700 (10242)
94.4
78.5
27.0 (102.2)
1780 (808)
37930 (17901)
96.8
80.3
33.0 (124.9)
1780 (808)
36531 (17241)
96.8
80.3
44.0 (166.5)
2330 (1058)
45500 (21474)
97.4
81.5
Sound Power
LwA
Sound
Pressure
dBA
All drycooler fan motors are 3/4 hp.
Table 51
Model #
-173
-178
-205
-248
-347
-356
-453
Liebert Quiet-Line™ drycooler performance data, 60Hz
Number
of Fans
3
4
6
8
Internal
Volume,
gal. (L)
Dry Weight
lb. (kg)
CFM, l/s
60Hz
13.1 (50.0)
795 (361)
8520 (14477)
74.8
61.3
19.4 (73.3)
855 (388)
7440 (12642)
74.8
61.3
13.1 (50.0)
940 (426)
11680 (19847)
76.2
62.5
17.4 (65.9)
1020 (463)
11360 (19303)
76.2
62.5
27.0 (102.2)
1780 (808)
17040 (8042)
78.4
64.3
39.3 (148.8)
1880 (854)
14880 (7023)
78.4
64.3
35.0 (132.5)
2250 (1022)
22720 (10723)
79.9
65.5
147
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
15.3
Dimensional Information
15.3.1 Dimensions—Prop Fan Drycoolers
Figure 117 Dimensions—2-fan fin/tube drycooler models
43-9/16"
(1106mm)
91-1/2"
(2324mm)
37-7/8"
(962mm)
18"
(457mm)
84"
(2134mm)
43-3/16"
(1097mm)
Emerson recommends a
clearance of 36" (915mm) on
each side for proper operation
and component access.
Figure 118 Dimensions—3- and 4-fan fin/tube drycooler models
43-9/16"
(1106mm)
131-1/2"
(3340mm)
37-7/8"
(962mm)
43-9/16"
(1106mm)
171-1/2"
(4356mm)
18"
(457mm)
124"
(3150mm)
70"
(1778mm)
37-7/8"
(962mm)
Eyebolts
for Lifting
43-3/16"
(1097mm)
18"
(457mm)
Note:
Overall height to the top of fan guard
43-1/8" (1095mm)
164"
(4166mm)
43-3/16"
(1097mm)
Liebert® DS™
148
Emerson recommends a
clearance of 36" (915mm) on
each side for proper operation
and component access.
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
Figure 119 Dimensions—6- and 8-fan fin/tube drycooler models
131-1/2"
(3340mm)
87-1/8"
(2213mm)
87-1/8"
(2213mm)
171-1/2"
(4356mm)
37-7/8"
(962mm)
37-7/8"
(962mm)
59"
(1499mm)
18"
(457mm)
86-3/4"
(2203mm)
18"
(457mm)
124"
(3150mm)
Overalll height to the top
of the fan guard is 43-1/8” (1095mm).
70" (1778mm)
1-1/2" (38mm)
diameter hole for
rigging (typ.4)
86-3/4"
(2203mm)
149
164"
(4166mm)
Emerson recommends a
clearance of 36" (915mm) on
each side for proper
operation and component
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
15.4
Electrical Data
15.4.1 Electrical Data—Prop Fan Drycoolers
Table 52 60Hz electrical values—Prop fan drycoolers without pump controls, standard models
Drycooler Model
Voltage
Phase
208/230
3
460
3
575
Table 53
3
Electrical
Value
174, 225
2 Fans
260, 310, 350
3 Fans
419, 466, 491
4 Fans
620, 650
6 Fan
880
8 Fans
FLA
7.0
10.5
14.0
21.0
28.0
WSA
7.9
11.4
14.9
21.9
28.9
OPD
15
15
20
25
35
FLA
3.4
5.1
6.8
10.2
13.6
WSA
3.8
5.5
7.2
10.6
14.0
OPD
15
15
15
15
20
FLA
2.8
4.2
5.6
8.4
11.2
WSA
3.2
4.6
6.0
8.8
11.6
OPD
15
15
15
15
15
60Hz electrical values—Prop fan drycoolers without pump controls, Liebert Quiet-Line™
models
Drycooler Model
Voltage
Phase
Electrical
Value
173, 178
3 Fans
205, 248
4 Fans
347, 356
6 Fans
453
8 Fans
3
FLA
5.4
7.2
10.8
14.4
3
WSA
5.9
7.7
11.3
14.9
3
OPD
15
15
15
20
3
FLA
2.7
3.6
5.4
7.2
3
WSA
2.9
3.8
5.6
7.4
3
OPD
15
15
15
15
3
FLA
2.1
2.8
4.2
5.6
3
WSA
2.3
3.0
4.4
5.8
3
OPD
15
15
15
15
208/230
460
575
Liebert® DS™
150
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
Table 54
60Hz electrical values—Standard prop fan drycoolers with integral pump controls
Number of Fans
Model #
Pump HP
FLA
2
3
4
6
8
174, 225
260, 310, 350
419, 466, 491
620, 650
880
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
208/230/3/60
0.75
10.5
11.4
15
14.0
14.9
20
17.5
18.4
25
24.5
25.4
30
31.5
32.4
40
1.5
13.6
15.3
20
17.1
18.8
25
20.6
22.3
25
27.6
29.3
35
34.6
36.3
40
2.0
14.5
16.4
20
18.0
19.9
25
21.5
23.4
30
28.5
30.4
35
35.5
37.4
45
3.0
17.6
20.3
30
21.1
23.8
30
24.6
27.3
35
31.6
34.3
40
38.6
41.3
50
5.0
23.7
27.9
40
27.2
31.4
45
30.7
34.9
50
37.7
41.9
50
44.7
48.9
60
7.5
31.2
37.3
60
34.7
40.8
60
38.2
44.3
60
45.2
51.3
70
52.2
58.3
80
10.0
37.8
45.5
70
41.3
49.0
70
44.8
52.5
80
51.8
59.5
90
58.8
66.5
90
15
53.2
64.8
110
56.7
68.3
110
60.2
71.8
110
67.2
78.8
110
74.2
85.8
125
0.75
5.0
5.4
15
6.7
7.1
15
8.4
8.8
15
11.8
12.2
15
15.2
15.6
20
1.5
6.4
7.2
15
8.1
8.9
15
9.8
10.6
15
13.2
14.0
20
16.6
17.4
20
2.0
6.8
7.7
15
8.5
9.4
15
10.2
11.1
15
13.6
14.5
20
17.0
17.9
20
460/3/60
3.0
8.2
9.4
15
9.9
11.1
15
11.6
12.8
15
15.0
16.2
20
18.4
19.6
25
5.0
11.0
12.9
20
12.7
14.6
20
14.4
16.3
20
17.8
19.7
25
21.2
23.1
30
7.5
14.4
17.2
25
16.1
18.9
25
17.8
20.6
30
21.2
24.0
30
24.6
27.4
35
10.0
17.4
20.9
30
19.1
22.6
35
20.8
24.3
35
24.2
27.7
40
27.6
31.1
45
15
24.4
29.7
50
26.1
31.4
50
27.8
33.1
50
31.2
36.5
50
34.6
39.9
60
0.75
4.1
4.5
15
5.5
5.9
15
6.9
7.3
15
9.7
10.1
15
12.5
12.9
15
1.5
5.2
5.8
15
6.6
7.2
15
8.0
8.6
15
10.8
11.4
15
13.6
14.2
20
2.0
5.5
6.2
15
6.9
7.6
15
8.3
9.0
15
11.1
11.8
15
13.9
14.6
20
3.0
6.7
7.7
15
8.1
9.1
15
9.5
10.5
15
12.3
13.3
15
15.1
16.1
20
5.0
8.9
10.4
15
10.3
11.8
15
11.7
13.2
15
14.5
16.0
20
17.3
18.8
20
7.5
11.8
14.1
20
13.2
15.5
20
14.6
16.9
25
17.4
19.7
25
20.2
22.5
30
575/3/60
10.0
13.8
16.6
25
15.2
18.0
25
16.6
19.4
30
19.4
22.2
30
22.2
25.0
35
15
19.8
24.1
40
21.2
25.5
40
22.6
26.9
40
25.4
29.7
45
28.2
32.5
45
151
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
60Hz electrical values—Liebert Quiet-Line™ drycoolers with integral pump controls
Table 55
Number of Fans
Model #
Pump H.P.
FLA
3
4
6
8
173, 178
205, 248
347, 356
453
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
FLA
WSA
OPD
208/230/3/60
0.75
8.9
9.8
15.0
10.7
11.6
15.0
14.3
15.2
20.0
17.9
18.8
25.0
1.5
12.0
13.7
20.0
13.8
15.5
20.0
17.4
19.1
25.0
21.0
22.7
25.0
2.0
12.9
14.8
20.0
14.7
16.6
20.0
18.3
20.2
25.0
21.9
23.8
30.0
3.0
16.0
18.7
25.0
17.8
20.5
30.0
21.4
24.1
30.0
25.0
27.7
35.0
5.0
22.1
26.3
40.0
23.9
28.1
40.0
27.5
31.7
45.0
31.1
35.3
50.0
7.5 *
29.6
35.7
50.0
31.4
37.5
60.0
35.0
41.1
60.0
38.6
44.7
60.0
36.2
43.9
70.0
38.0
45.7
70.0
41.6
49.3
80.0
45.2
52.9
80.0
51.6
63.2
100.0
53.4
65.0
110.0
57.0
68.6
110.0
60.6
72.2
110.0
0.75
4.3
4.7
15.0
5.2
5.6
15.0
7.0
7.4
15.0
8.8
9.2
15.0
1.5
5.7
6.5
15.0
6.6
7.4
15.0
8.4
9.2
15.0
10.2
11.0
15.0
2.0
6.1
7.0
15.0
7.0
7.9
15.0
8.8
9.7
15.0
10.6
11.5
15.0
10.0
15
2
2
460/3/60
3.0
7.5
8.7
15.0
8.4
9.6
15.0
10.2
11.4
15.0
12.0
13.2
15.0
5.0
10.3
12.2
15.0
11.2
13.1
20.0
13.0
14.9
20.0
14.8
16.7
20.0
13.7
16.5
25.0
14.6
17.4
25.0
16.4
19.2
30.0
18.2
21.0
30.0
16.7
20.2
30.0
17.6
21.1
35.0
19.4
22.9
35.0
21.2
24.7
35.0
23.7
29.0
45.0
24.6
29.9
50.0
26.4
31.7
50.0
28.2
33.5
50.0
0.75
3.4
3.7
15.0
4.1
4.4
15.0
5.5
5.8
15.0
6.9
7.2
15.0
1.5
4.5
5.1
15.0
5.2
5.8
15.0
6.6
7.2
15.0
8.0
8.6
15.0
2.0
4.8
5.5
15.0
5.5
6.2
15.0
6.9
7.6
15.0
8.3
9.0
15.0
3.0
6.0
7.0
15.0
6.7
7.7
15.0
8.1
9.1
15.0
9.5
10.5
15.0
5.0
8.2
9.7
15.0
8.9
10.4
15.0
10.3
11.8
15.0
11.7
13.2
15.0
11.1
13.4
20.0
11.8
14.1
20.0
13.2
15.5
20.0
14.6
16.9
25.0
13.1
15.9
25.0
13.8
16.6
25.0
15.2
18.0
25.0
16.6
19.4
30.0
19.1
23.4
40.0
19.8
24.1
40.0
21.2
25.5
40.0
22.6
26.9
40.0
7.5 *
10.0
15
2
2
575/3/60
7.5
2
10.0
2
15 2
1. Values are calculated per UL 1995. Pump FLA values used are based on NEC tables for motor horsepower. OPD values may be
adjusted higher than calculations to compensate for maximum anticipated application temperatures.
2. May require electrical component(s) with higher capacity in the drycooler. Consult factory representatives for assistance before
ordering.
Liebert® DS™
152
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
Figure 120 Electrical field connections for fluid temperature control, direct-drive Drycoolers
Factory-wired to 24V
Class 2 control circuit
Factory-wired to components
on electric panel
Electrical service connection
terminals when factory
disconnect is not supplied.
Fuse block supplied on
DNT drycoolers.
Electric service connection
terminals when factory
disconnect is supplied.
Factory-installed
disconnect switch
(optional).
Unit Alarm Connection
Field-supplied 24V.
Class 2 wiring to
Terminals "24 & 50"
to indicate "Standby Glycol
Pump On". (Supplied
with dual pump controls
only.)
Control interlock
Field-supplied
Class 2 wiring to
interlock drycooler
24V controls to
Liebert room unit
(Not required on
CSU 3000). 7/8"
(22.2mm) diameter
hole provided in
bottom of electric box.
Flow switch connection
(Dual pump controls only)
Field-supplied 24V Class 2
wiring from terminals 74 +
77 to field mounted flow
switch.
Pump fuses & overload
heaters (shipped with
standard pump packages)
are to be field-installed in
pump fuse block(s) and
starter(s).
Earth ground bar (50Hz).
Connection terminals with factory
ground from each high voltage
component for field-supplied
earth grounding wire.
Electric service connection
terminals for power supply to
pumps when pump controls
are factory-supplied. Dual
pump connection shown. 7/8"
(22.2mm) diameter knockouts
provided in bottom
of electric box.
Earth ground connection (60 HZ).
Connection terminal for fieldsupplied earth grounding wire.
Electric service entrance.
A 7/8" (22.2mm) diameter hole
in a 1-1/8" (28.6mm) knockout
provided in bottom of electric
box.
Refer to specification sheet for full load amp and wire size amp ratings.
153
Electric service.
not by Emerson.
(Field-wired to Liebert
CSU 3000.
Interconnecting wiring
not by Emerson).
DPN000276
Rev. 1
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
15.5
Piping Connections
Table 56
Standard drycooler piping connection sizes and internal volume
Drycooler
No. of
Fans
Inlet & Outlet Connection Size
Model #
No. of Internal
Coil Circuits
174
16*
225
16
260
24*
310
16
13.1 (50.0)
1/1
2-1/8
—
350
16
19.4 (73.3)
1/1
2-1/8
—
419
32*
17.4 (65.9)
1/1
2-1/8
—
466
40*
22.0 (83.3)
1/1
2-5/8
—
2
3
4
Internal Volume,
gal. (L)
No. of
Inlets/Outlets
OD Copper, in.
ID Sweat, in.
6.9 (26.2)
1/1
2-1/8
—
11.1 (42.1)
1/1
2-1/8
—
10.0 (37.8)
1/1
2-1/8
—
491
32
26.3 (99.6)
1/1
2-1/8
—
620
32
27.0 (102.2)
2/2
—
2-1/8
650
40
33.0 (124.9)
2/2
—
2-1/8
880
52
44.0 (166.5)
2/2
—
2-1/8
6
8
* = Standard Circuiting
Table 57
™
Liebert Quiet-Line
Drycooler
drycooler piping connection sizes and internal volume
No. of Internal
Coil Circuits
No. of
Fans
173
16, 32*
3
178
16, 32*
205
16
248
32*
347
32
356
32
453
32
Model #
4
6
8
Internal Volume
gal. (L)
Inlet & Outlet Connection Size
OD Copper, in.
ID Sweat, in.
13.1 (50.0)
1/1
2-1/8
—
19.4 (73.3)
1/1
2-1/8
—
13.1 (50.0)
1/1
2-1/8
—
17.4 (65.9)
1/1
2-1/8
—
27.0 (102.2)
2/2
—
2-1/8
39.3 (148.8)
2/2
—
2-1/8
35.0 (132.5)
2/2
—
2-1/8
* = Standard circuiting
Liebert® DS™
No. of
Inlets/Outlets
154
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
Figure 121 Piping—Direct-drive drycoolers
Inlet Connection
(Upper Header)
Outlet Connection
(Lower Header)
DPN000275
Rev. 3
1/2" FPT Connections
EXPANSION TANK
(GLYCOOL CSU 3000
Units Supplied with
Compression Tank)
Figure 122 Piping—6 and 8 fan drycoolers
Inlet
Connections
(4 Inlet, 4 Outlet
Connections Shown)
See table for actual
number provided.
DPN002429
Rev. 0
Outlet Connections
155
Liebert® DS™
Heat Rejection—Liebert Fin/Tube Drycoolers and Pumps
Figure 123 Typical piping arrangement, multiple prop fan drycoolers and multiple indoor units
Expansion Tank
Gal. (L)
FS
Drycooler No. 1 Model
P:
GPM (L/s)
Ft (kPA)
See Note 3
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Total
GPM
(L/s):
Pipe
Diam.:
In. (mm)
P: Ft.
(kPa)
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Drycooler No. 2 Model
P:
GPM (L/s)
Ft (kPA)
LEGEND
Gate Valve
Check Valve
Butterfly Valve
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Relief Valve
Union
Ball Or Flow Control Valve
FS
Flow Switch
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
P:Pressure Drop
Strainer Filter
Notes:
1. Pressure and temperature gauges (or ports for same) are recommended to monitor
component pressure drops and performance.
2. Flow measuring devices, drain and balancing valves to be supplied by others and
located as required.
3. See product literature for installation guidelines and clearance dimensions.
4. Drawing shows dual pump package. Alternate pump packages with more pumps may be
considered, consult supplier
Liebert® DS™
156
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
Cooling Unit #
Model
GPM (L/s)
P Ft (kPa):
DPN000991
Rev. 0
Heat Rejection—Piggyback Drycoolers
16.0 HEAT REJECTION—PIGGYBACK DRYCOOLERS
16.1
Drycooler Selection—Indoor Piggyback Drycoolers
Table 58
Liebert indoor piggyback drycooler/DS matchup data
Drycooler Selections
Liebert DS Model
Drycooler Type
Ambient Temp. °F (°C)
028
035
042
053
070
077
Piggyback
Drycooler
95 (35)
100 (38)
105 (41)
PD-133/150
PD-223
PD-333
PD-150
PD-223
PD-333
PD-223
PD-333
PD-333
PD-290
N/A
N/A
PD-333
N/A
N/A
PD-333
N/A
N/A
Table 59
Indoor piggyback airflow and static pressure data
Horsepower/rpm
Ext. Static Pressure - in. (Pa)
3
Model
No. of Fans
CFM (m /hr)
0.25 (62.3)
0.50 (125)
0.75 (187)
1.0 (249)
PD-133
PD-150
2
6900 (11,730
2/605
3/680
3/750
3/820
PD-223
2
12,500 (21,250
7.5/760
7.5/810
7.5/870
7.5/920
PD-290
2
12,300 (20,910
7.5/780
7.5/830
7.5/890
7.5/940
PD-333
2
16,500 (28,050
10/640
10/695
10/740
15/790
1. Values are without filter box. External Static Pressure = filter pressure drop + other static drops.
2. Source: DPN000695, Rev. 0
16.2
Electrical Data—Piggyback Drycoolers
Table 60
Electrical data, piggyback drycoolers, 60Hz, 3 phase
Drycooler
No Pumps
Model
PD-133
PD-150
PD-223
PD-290
PD-333
Drycooler
Standard Pump Package
Total Unit
Pump Only
Drycooler - Optional
Pump Package
Total Unit
Pump
Only
Total Unit
Voltage
Blower
Motor hp
FLA
WSA
OPD
hp
FLA
FLA
WSA
OPD
hp
FLA
WSA
OPD
208
3
10.6
13.3
20
1.5
6.6
17.2
19.9
30
2
18.1
20.8
30
230
3
9.6
12.0
20
1.5
6.0
15.6
18
25
2
16.4
18.8
25
460
3
4.8
6.0
15
1.5
3.0
7.8
9
15
2
8.2
9.4
15
575
3
3.9
4.9
15
1.5
2.4
6.3
7.3
15
2
6.6
7.6
15
208
3
10.6
13.3
20
2
7.5
18.1
20.8
30
3
21.2
23.9
30
230
3
9.6
12.0
20
2
6.8
16.4
18.8
25
3
19.2
21.6
30
460
3
4.8
6.0
15
2
3.4
8.2
9.4
15
3
9.6
10.8
15
575
3
3.9
4.9
15
2
2.7
6.6
7.6
15
3
7.8
8.8
15
208
7.5
24.2
30.3
50
3
10.6
34.8
40.9
60
5
40.9
47
70
230
7.5
22.0
27.5
45
3
9.6
31.6
37.1
50
5
37.2
42.7
60
460
7.5
11.0
13.8
20
3
4.8
15.8
18.6
25
5
18.6
21.4
30
575
7.5
9.0
11.3
20
3
3.9
12.9
15.2
20
5
15.1
17.4
25
208
7.5
24.2
30.3
50
5
10.6
40.9
47
60
3
34.8
40.9
60
230
7.5
22.0
27.5
45
5
9.6
37.2
42.7
30
3
31.6
37.1
50
460
7.5
11.0
13.8
20
5
4.8
18.6
21.4
25
3
15.8
18.6
25
575
7.5
9.0
11.3
20
5
3.9
15.1
17.4
20
3
12.9
15.2
20
208
10
30.8
38.5
60
5
10.6
47.5
55.2
80
3
41.4
49.1
70
230
10
28.0
35.0
60
5
9.6
43.2
50.2
70
3
37.6
44.6
70
460
10
14.0
17.5
30
5
4.8
21.6
25.1
35
3
18.8
22.3
35
575
10
11.0
13.8
20
5
3.9
17.1
19.9
30
3
14.9
17.7
25
ph = phase; FLA = Full Load Amps; WSA = Wire Size Amp; OPD = Maximum Overcurrent Protection Device
Source: DPN000710, Rev. 0
157
Liebert® DS™
Heat Rejection—Piggyback Drycoolers
16.3
Dimensions—Indoor Piggyback Drycoolers
Figure 124 Dimensions—Indoor piggyback drycoolers
1-1/8"
(29mm)
E
H
K
J
R
D
B
K
Overall
Optional Fan
Discharge
S
sions
Dimen
Over
all Dim
ensio
ns
Disconnect
Switch
H
J
35-1/8"
(892mm)
72"
(1829mm)
R
Fan Discharge
Shaded areas indicate
a recommended
clearance of 34" (864mm)
for component access.
5"
(127mm)
1"
(25.4mm)
G
Condenser Coil Inlet
and Duct Connection
C
Unit Base
10"
(254mm)
Drain Outlet
Opening
C
UNIT DIMENSIONS
FAN DISCHARGE DATA
REAR DISCHARGE
OPTIONAL TOP DISCHARGE
15-7/16"
(392mm)
Floor Level
PUMP PACKAGE SELECTION
SINGLE PUMP PACKAGE
DUAL PUMP PACKAGE
F
A
Rear of
Cabinet
DPN000710
Rev. 2
FLOOR CUTOUT DIMENSIONS
Table 61
A
Unit Base
Dimensions—Indoor piggyback drycoolers, in (mm)
A
B
C
D
E
F
G
H
J
K
R
S
PD-133
72
(1829)
74
(1880)
31
(787)
32
(813)
1-1/8
(29)
33
(838)
60
(1524)
8-5/8
(219)
50-3/16
(1275)
16-1/16
(408)
13-3/16
(335)
14-11/16
(373)
PD-150
72
(1829)
74
(1880)
31
(787)
32
(813)
1-1/8
(29)
33
(838)
60
(1524)
8-5/8
(219)
50-3/16
(1275)
16-1/16
(408)
13-3/16
(335)
14-11/16
(373)
PD-223
97
(2464)
99
(2515)
33
(838)
34
(864)
3-1/8
(79)
46-1/2
(1181)
85
(2159)
23-5/16
(592)
50-3/16
(1275)
16-1/16
(408)
23-1/2
(597)
14-11/16
(373)
PD-290
97
(2464)
99
(2515)
33
(838)
34
(864)
3-1/8
(79)
46-1/2
(1181)
85
(2159)
23-5/16
(592)
50-3/16
(1275)
16-1/16
(408)
23-1/2
(597)
14-11/16
(373)
PD-333
97
(2464)
99
(2515)
33
(838)
34
(864)
3-1/8
(79)
46-1/2
(1181)
85
(2159)
16-5/16
(421)
63-7/8
(1622)
19-1/8
(486)
16-13/16
(427)
11-5/8
(295)
Model
1. A 1" (25.4mm) flange is provided on all units for duct connection to coil duct opening and fan air discharge opening.
2. Source: DPN000710, Rev. 1
Liebert® DS™
158
Heat Rejection—Piggyback Drycoolers
16.4
Piping
Figure 125 Piping—Indoor piggyback drycooler models
See
Note 4
See
Note 4
See
Note 1
See
Note 1
D
See Note 2
E
1-13/16"
(46mm)
A
A
E
C
C
1-13/16"
(46mm)
B
B
See Note 2
3" (76mm)
D
See Note 1
See Note 4
3" (76mm)
1" (25mm)
Panel
3" (76mm)
See Note 1
3" (76mm)
See Note 4
1" (25mm)
Panel
3" (76mm)
3" (76mm)
C See Note 2
C
12-5/8"
(321mm)
12-5/8"
(321mm)
4-1/2"
(114mm)
9-11/16"
(246mm)
See Note 2
4-1/2"
(114mm)
9-11/16"
(246mm)
7-7/8"
(200mm)
7-7/8"
(200mm)
MODELS PD-102 THRU PD-290
MODEL PD-333
5-1/2" (140mm) See Note 1
3-1/4" (85mm)
See Note 4
Drain Outlet
Location
1-1/4" (32mm) F.P.T.
3"
(76mm)
See
Note 2
NOTES
1. Multiple knockouts of 1-3/8" (35mm), 1-3/4" (45mm) and
2-1/2" (64mm) for main power supply (typical).
2. Cover plate for access of glycol piping inlet and outlet.
3. Piggyback drycooler connection sizes for supply and return
glycol lines are the same as room unit supply and return lines.
FE/FH 110G 1-5/8" (41mm); FE/FH116G - 2-1/8" (54mm).
Note applies to PD-133.
4. 7/8" (22.2mm) knockout provided.
Table 62
Model #
Dimensions—Indoor piggyback drycoolers
A
B
C
D
E
6" (1
52m
3" (7
1-1/2
6mm
" (38
m)
8"
(203mm)
)
mm)
ALL MODELS
DPN000711
Rev. 1
Table 63
Pipe connection sizes, ODS
Model # Glycol Supply Glycol Ret.
Drain
PD-133 27-1/4 (692) 2-1/2 (64) 6 (152) 9-1/8 (232) 28-3/4 (730)
PD-133
See Note 3
PD-150 27-1/4 (692) 2-1/2 (64) 6 (152) 9-1/8 (232) 28-3/4 (730)
PD-150
2-1/8 (54)
2-1/8 (54)
1-1/4 (32)
PD-223 27-1/4 (692) 2-1/2 (64) 6 (152) 9-1/8 (232) 28-3/4 (730)
PD-223
2-1/8 (54)
2-1/8 (54)
1-1/4 (32)
PD-290 27-1/4 (692) 2-1/2 (64) 6 (152) 9-1/8 (232) 28-3/4 (730)
PD-290
2-1/8 (54)
2-1/8 (54)
1-1/4 (32)
PD-333
2-1/8 (54)
2-1/8 (54)
1-1/4 (32)
PD-333 26-1/2 (673
6 (152)
7 (178) 11-1/4 (286)
24 (610)
Source: DPN000711, Rev. 1
See Note 3 1-1/4 (32)
Source: DPN000711, Rev. 1
159
Liebert® DS™
Pump Packages and Expansion Tank
17.0 PUMP PACKAGES AND EXPANSION TANK
Figure 126 Single pump package piping connections and dimension
17-1/4"
(438.2mm)
SINGLE PACKAGE 0.75 - 7.5 HP
2
1
3
19"
(482.6mm)
2-7/8"
(72.9mm)
15-7/8"
(403.2mm)
1-3/4"
(44.4mm)
6-3/8"
(161.9mm)
8-3/4"
(222.3mm)
12-1/4"
(311.1mm)
30"
(762mm)
17"
(431.8mm)
PUMP PACKAGE MOUNTING ANGLES
(Angles are inside, bottom
of pump package. View used for
mounting reference.)
1
3" (76.2mm) diameter pump suction
connection knockouts
2
3" (76.2mm) diameter pump discharge
connection knockouts
4
3 7/8" (22.2mm) diameter electrical knockouts
4
4 1/2" (12.7mm) diameter holes for mounting
3/4"
(19mm)
C
DPN000278
Rev. 0
A
B
Table 64
Mounting hole dimensions, in. (mm)
A
B
C
Single (0.75 - 7.5hp)
15-1/4 (387.4)
2-1/2 (63.5)
22-1/2 (571.5)
Dual (0.75 - 5hp)
30-1/4 (768.4)
2-1/2 (63.5)
22-1/2 (571.5)
Dual (7.5hp)
39-5/16 (998.5)
1-3/4 (44.5)
26-7/8 (682.6)
Pump Package
Source: DPN000278, Rev. 0
Liebert® DS™
160
Pump Packages and Expansion Tank
Figure 127 Dual pump package piping connections and dimensions
DUAL PACKAGE 0.75 - 5 HP
See Figure 126 and Table 64 for
mounting angles and dimensions
2
32-1/4"
(819.2mm)
1
2
3
1
3
15-7/8"
(403.2mm)
4-1/8"
(104.8mm)
6-3/8"
(161.9mm) "
2-7/8"
(73mm)
8-3/4" (222.2mm)
19"
(482.6mm)
1-3/4"
(44.4mm)
12-1/4"
(311.1mm)
30"
(762mm)
23-3/4"
(603.2mm)
27-1/4"
(692.1mm)
32"
(812.8mm)
1
3" (76.2mm) diameter pump suction
connection knockouts
2
3" (76.2mm) diameter pump discharge
connection knockouts
3
7/8" (22.2mm) diameter electrical knockouts
5 5" (127mm) diameter pump discharge
connection hole
6 5" (127mm) diameter pump suction
connection hole
32-3/8"
(822.3mm)
DUAL PACKAGE 7.5 HP
3
5
41-1/4"
(1047.8mm)
6
5
6
19-15/16
(506.4mm)
11-7/8
(301.6mm)
15-7/8
(403.2mm)
33-3/16"
(843mm)
16-3/8"
(415.9mm)
29-3/16"
(741.4mm)
6-1/2"
(165.1mm)
41"
(1041.4mm)
161
DPN000328
Rev. 0
Liebert® DS™
Pump Packages and Expansion Tank
Figure 128 Pump package expansion tank
30-1/2"
(774.7mm)
Ø 9"
(228.6mm)
1/2" F.P.T.
Fitting
2-3/4"
(69.9mm)
2-1/2"
(63.5mm)
1"
(25.4mm)
1-1/2"
(38.1mm)
6-13/16"
(173mm)
1/2" F.P.T.
Fitting
17-1/4"
(438.2mm)
7"
(177.8mm)
4"
(101.6mm)
1"
(25.4mm)
Ø 1/2" (12.7mm)
8 Holes
1-1/2"
(38.1mm)
6-1/8"
(155.6mm)
8.8 gal. (33.3 L)
Expansion Tank
3"
(76.2mm)
DPN000329
Rev. 0
Expansion Tank (P/N 1C16717P1)
This tank, included in a standard pump package, has an internal volume of 8.8 gal. (33 l) and a
maximum pressure of 100 psi (690 kPa).
This tank is sized for a typical “open” system with a fluid volume of less than 75 gal. (280l). When
used in a “closed” system, volumes of up to 140 gal. (910l) can be accommodated. The use of a safety
relief valve, field-supplied, is recommended for systems “closed” to atmospheric venting. Other piping
accessories for filling, venting, or adjusting the fluid in the system, are recommended, but not
included.
Table 65
Glycol pump data
Connections
Electric @ 60Hz
Pump
HP
NPT Suction
Connection
Female
Discharge
Connection
ph
208 FLA
230 FLA
460 FLA
575 FLA
3/4
1-1/4"
3/4"
1
7.6
6.9
N/A
N/A
3/4
1-1/4"
3/4"
3
3.5
3.2
1.6
1.3
1-1/2
1-1/4"
3/4"
3
6.6
6.0
3.0
2.4
2
1-1/4"
3/4"
3
7.5
6.8
3.4
2.7
3
1-1/2"
1"
3
10.6
9.6
4.8
3.9
5
1-1/2"
1-1/4"
3
16.7
15.2
7.6
6.1
7-1/2 *
3"
3"
3
24.2
22.0
11.0
9.0
* May require electrical component(s) with higher capacity in the drycooler. Consult factory representative
for assistance before ordering.
• To Calculate Total Pump and Drycooler Full Load Amps (FLA):
Total FLA = Pump FLA + Drycooler FLA
• To Calculate Total Pump and Drycooler Wire Size Amps (WSA):
Total WSA = Largest Motor FLA x 1.25 + Sum of other Motor FLA values
• To Calculate Total Pump and Drycooler Maximum Overcurrent Protective Device (OPD):
Total OPD = Largest Motor FLA x 2.25 + Sum of other Motor FLA values
Select standard fuse size (15A, 20A, 25A, 30A, etc.)
Liebert® DS™
162
Pump Packages and Expansion Tank
Figure 129 Pump curve, 60 Hz
180
Curve
A
B
C
D
E
F
Total Head, Feet/Water
160
140
F
120
E
G
D
100
80
60
HP
3/4 (1-ph)
3/4 (3-ph)
1.5
2
3
5
7.5
G
C
B
A
40
20
0
10
20
30
40
50
60
70
80
120
160
200
250
300
400
Flow Rate, GPM
Capacity data is rated and factory-certified per ASHRAE 127-2007 with a 0% tolerance.
163
Liebert® DS™
U.S. Department of Energy (DOE) Performance Data
APPENDIX A - U.S. DEPARTMENT OF ENERGY (DOE) PERFORMANCE DATA
Table 66
U.S. DOE performance table—Liebert DS upflow and downflow, air-cooled
Basic Model
Number
Airflow
Configuration
DS028AD*0*
DS028AD*1*
Total Cooling Capacity
Sensible Cooling Capacity
Btu/hr
kW
Btu/hr
kW
CFM
SCOP
Downflow
104499
30.63
94171
27.60
4210
2.42
Downflow
106548
31.23
96218
28.20
4199
2.62
DS028AS*0*
Downflow
104158
30.53
93830
27.50
4210
2.6
DS028AS*1*
Downflow
106207
31.13
95877
28.10
4199
2.83
DS028AU*0*
Downflow
124306
36.43
103725
30.40
4210
2.37
DS028AU*1*
Downflow
126697
37.13
106113
31.10
4199
2.54
DS028DD*0*
Downflow
103816
30.43
93489
27.40
4210
2.36
DS028DD*1*
Downflow
105865
31.03
95536
28.00
4199
2.56
DS028DU*0*
Downflow
123623
36.23
103384
30.30
4210
2.32
DS028DU*1*
Downflow
126014
36.93
105431
30.90
4199
2.48
DS035AD*0*
Downflow
119184
34.93
107137
31.40
4976
2.24
DS035AD*1*
Downflow
122940
36.03
110549
32.40
4976
2.5
DS035AS*0*
Downflow
123623
36.23
109184
32.00
4976
2.38
DS035AS*1*
Downflow
127038
37.23
112596
33.00
4976
2.66
DS035AU*0*
Downflow
124989
36.63
109866
32.20
4976
2.33
DS035AU*1*
Downflow
128746
37.73
113620
33.30
4976
2.59
DS035DD*0*
Downflow
118501
34.73
106113
31.10
4976
2.18
DS035DD*1*
Downflow
121916
35.73
109525
32.10
4976
2.42
DS035DU*0*
Downflow
123965
36.33
108843
31.90
4976
2.26
DS035DU*1*
Downflow
127721
37.43
112596
33.00
4976
2.51
DS042AD*1*
Downflow
138649
40.64
125220
36.70
5957
2.32
DS042AS*0*
Downflow
133185
39.03
120102
35.20
6029
2.1
DS042AS*1*
Downflow
139674
40.94
125903
36.90
5957
2.46
DS042AU*1*
Downflow
146504
42.94
129315
37.90
5957
2.35
DS042DD*1*
Downflow
136942
40.14
124538
36.50
6053
2.22
DS042DU*1*
Downflow
145138
42.54
128632
37.70
6053
2.26
DS053AD*0*
Downflow
184069
53.95
166506
48.80
7177
2.49
DS053AD*1*
Downflow
187484
54.95
173671
50.90
7714
2.63
DS053AS*0*
Downflow
190557
55.85
169918
49.80
7177
2.5
DS053AS*1*
Downflow
193972
56.85
177083
51.90
7714
2.63
DS053AU*0*
Downflow
182020
53.35
165482
48.50
7177
2.54
DS053AU*1*
Downflow
185435
54.35
172306
50.50
7714
2.68
DS053DD*0*
Downflow
182361
53.45
164800
48.30
7177
2.41
DS053DD*1*
Downflow
185776
54.45
171965
50.40
7714
2.54
DS053DU*0*
Downflow
180312
52.85
163776
48.00
7177
2.46
DS053DU*1*
Downflow
183727
53.85
170600
50.00
7714
2.59
DS070AD*0*
Downflow
227098
66.56
198237
58.10
8613
2.16
DS070AD*1*
Downflow
231537
67.86
207450
60.80
9277
2.3
DS070AS*0*
Downflow
231879
67.96
200626
58.80
8613
2.18
DS070AS*1*
Downflow
236318
69.26
209497
61.40
9277
2.32
Liebert® DS™
164
U.S. Department of Energy (DOE) Performance Data
Table 66
U.S. DOE performance table—Liebert DS upflow and downflow, air-cooled (continued)
Basic Model
Number
Airflow
Configuration
DS070AU*0*
DS070AU*1*
Total Cooling Capacity
Sensible Cooling Capacity
Btu/hr
kW
Btu/hr
kW
CFM
SCOP
Downflow
216853
63.56
193460
56.70
8613
2.27
Downflow
221634
64.96
202332
59.30
9277
2.43
DS070DD*0*
Downflow
224707
65.86
195849
57.40
8613
2.1
DS070DD*1*
Downflow
228805
67.06
204720
60.00
9277
2.21
DS070DU*0*
Downflow
214462
62.86
190731
55.90
8613
2.18
DS070DU*1*
Downflow
218902
64.16
199943
58.60
9277
2.32
DS077AS*1*
Downflow
252710
74.07
226216
66.30
10644
2.1
DS077AU*1*
Downflow
243490
71.36
221780
65.00
10644
2.15
DS077DU*1*
Downflow
241099
70.66
215638
63.20
10063
2.1
DS105AS*1*
Downflow
328182
96.18
276372
81.00
13111
1.92
DS105AU*1*
Downflow
326474
95.68
283878
83.20
13111
1.9
DS105DU*1*
Downflow
322035
94.38
270572
79.30
13087
1.9
VS028AD*0*
Upflow
105524
30.93
95195
27.90
4210
2.35
VS028AD*1*
Upflow
106548
31.23
96218
28.20
4210
2.45
VS028AS*0*
Upflow
104499
30.63
94854
27.80
4210
2.52
VS028AS*1*
Upflow
105865
31.03
95877
28.10
4210
2.63
VS028AU*0*
Upflow
125672
36.83
105090
30.80
4210
2.31
VS028AU*1*
Upflow
126697
37.13
106113
31.10
4210
2.4
VS028DD*0*
Upflow
104841
30.73
94854
27.80
4210
2.32
VS028DD*1*
Upflow
106207
31.13
95877
28.10
4210
2.42
VS028DU*0*
Upflow
125331
36.73
104748
30.70
4210
2.29
VS028DU*1*
Upflow
126355
37.03
105772
31.00
4210
2.37
VS035AD*0*
Upflow
120550
35.33
108843
31.90
4976
2.21
VS035AD*1*
Upflow
122599
35.93
110890
32.50
4976
2.35
VS035AS*0*
Upflow
127721
37.43
103042
30.20
4976
2.17
VS035AS*1*
Upflow
126697
37.13
112937
33.10
4976
2.49
VS035AU*0*
Upflow
126697
37.13
111914
32.80
4976
2.3
VS035AU*1*
Upflow
128746
37.73
113961
33.40
4976
2.44
VS035DD*0*
Upflow
119867
35.13
110208
32.30
5263
2.16
VS035DD*1*
Upflow
121916
35.73
110208
32.30
4976
2.31
VS035DU*0*
Upflow
126014
36.93
113278
33.20
5263
2.24
VS035DU*1*
Upflow
128063
37.53
113278
33.20
4976
2.4
VS042AD*0*
Upflow
135234
39.63
122491
35.90
5933
2.01
VS042AD*1*
Upflow
138649
40.64
125903
36.90
5933
2.19
VS042AS*0*
Upflow
135917
39.83
122832
36.00
5933
2.13
VS042AS*1*
Upflow
139332
40.84
126244
37.00
5933
2.33
VS042AU*0*
Upflow
143430
42.04
126585
37.10
5933
2.05
VS042AU*1*
Upflow
146845
43.04
129997
38.10
5933
2.23
VS042DD*0*
Upflow
130795
38.33
121808
35.70
6029
1.99
VS042DD*1*
Upflow
137625
40.34
125220
36.70
5933
2.15
VS042DU*0*
Upflow
142747
41.84
125903
36.90
5933
2.01
VS042DU*1*
Upflow
145821
42.74
129315
37.90
5933
2.18
165
Liebert® DS™
U.S. Department of Energy (DOE) Performance Data
Table 66
U.S. DOE performance table—Liebert DS upflow and downflow, air-cooled (continued)
Basic Model
Number
Airflow
Configuration
VS053AD*0*
VS053AD*1*
Total Cooling Capacity
Sensible Cooling Capacity
Btu/hr
kW
Btu/hr
kW
CFM
SCOP
Upflow
186118
54.55
172988
50.70
7656
2.45
Upflow
186801
54.75
173671
50.90
7656
2.47
VS053AS*0*
Upflow
192606
56.45
176400
51.70
7656
2.45
VS053AS*1*
Upflow
193289
56.65
177083
51.90
7656
2.48
VS053AU*0*
Upflow
184410
54.05
171965
50.40
7656
2.49
VS053AU*1*
Upflow
184752
54.15
172647
50.60
7656
2.52
VS053DD*0*
Upflow
184752
54.15
171624
50.30
7656
2.37
VS053DD*1*
Upflow
185776
54.45
171624
50.30
7656
2.47
VS053DU*0*
Upflow
182703
53.55
170600
50.00
7656
2.41
VS053DU*1*
Upflow
184069
53.95
172647
50.60
7656
2.43
VS070AD*0*
Upflow
230513
67.56
207450
60.80
9187
2.16
VS070AD*1*
Upflow
231537
67.86
208473
61.10
9187
2.2
VS070AS*0*
Upflow
235635
69.06
209838
61.50
9187
2.18
VS070AS*1*
Upflow
236660
69.36
210862
61.80
9187
2.21
VS070AU*0*
Upflow
220609
64.66
202332
59.30
9187
2.26
VS070AU*1*
Upflow
221634
64.96
203355
59.60
9187
2.3
VS070DD*0*
Upflow
229147
67.16
205744
60.30
9187
2.11
VS070DD*1*
Upflow
230171
67.46
206767
60.60
9187
2.15
VS070DU*0*
Upflow
219243
64.26
200967
58.90
9187
2.21
VS070DU*1*
Upflow
220268
64.56
201990
59.20
9187
2.25
VS077AS*0*
Upflow
253052
74.17
223486
65.50
9953
1.99
VS077AS*1*
Upflow
254076
74.47
224510
65.80
9953
2.02
VS077AU*0*
Upflow
243490
71.36
219050
64.20
9953
2.05
VS077AU*1*
Upflow
244514
71.66
220210
64.54
9953
2.08
VS077DU*0*
Upflow
241441
70.76
217003
63.60
9953
2
VS077DU*1*
Upflow
243148
71.26
215980
63.30
9570
2.05
VS105AS*0*
Upflow
328865
96.38
277054
81.20
13111
1.84
VS105AS*1*
Upflow
329548
96.58
275007
80.60
12633
1.87
VS105AU*0*
Upflow
326474
95.68
276031
80.90
13111
1.81
VS105AU*1*
Upflow
324425
95.08
273984
80.30
12633
1.84
VS105DU*0*
Upflow
322376
94.48
272278
79.80
13111
1.79
VS105DU*1*
Upflow
325108
95.28
269548
79.00
12250
1.81
Liebert® DS™
166
U.S. Department of Energy (DOE) Performance Data
Table 67
U.S. DOE performance table—Liebert DS upflow and downflow, water-cooled
Basic Model
Number
Airflow
Configuration
DS028WD*0*
DS028WD*1*
Total Cooling Capacity
Sensible Cooling Capacity
Btu/hr
kW
Btu/hr
kW
CFM
SCOP
Downflow
107914
31.63
97583.2
28.60
4210
3
Downflow
111329
32.63
99971.6
29.30
4210
3.29
DS028WS*0*
Downflow
106889.5
31.33
96559.6
28.30
4210
3.25
DS028WS*1*
Downflow
108938.5
31.93
98948
29.00
4210
3.59
DS028WU*0*
Downflow
129087
37.83
107478
31.50
4210
2.89
DS028WU*1*
Downflow
131477.5
38.53
109866.4
32.20
4210
3.14
DS035WD*0*
Downflow
127038
37.23
112596
33.00
4926
2.63
DS035WD*1*
Downflow
130453
38.23
116008
34.00
4926
2.96
DS035WS*0*
Downflow
122940
36.03
110548.8
32.40
4926
2.83
DS035WS*1*
Downflow
126355
37.03
113960.8
33.40
4926
3.22
DS035WU*0*
Downflow
130453
38.23
114302
33.50
4926
2.83
DS035WU*1*
Downflow
134209.5
39.33
118055.2
34.60
4926
3.2
DS042WD*1*
Downflow
147869.5
43.34
132044.4
38.70
5850
2.83
DS042WS*0*
Downflow
140015
41.04
125902.8
36.90
5950
2.52
DS042WS*1*
Downflow
131477.5
38.53
131362
38.50
5850
3.02
DS042WU*0*
Downflow
150943
44.24
129997.2
38.10
6054
2.5
DS042WU*1*
Downflow
155041
45.44
135456.4
39.70
5850
2.84
DS053WD*0*
Downflow
201826.5
59.15
172647.2
50.60
7177
3.19
DS053WD*1*
Downflow
205241.5
60.15
179471.2
52.60
7714
3.38
DS053WS*0*
Downflow
203875.5
59.75
173670.8
50.90
7177
3.19
DS053WS*1*
Downflow
207290.5
60.75
180494.8
52.90
7714
3.38
DS053WU*0*
Downflow
196704
57.65
170258.8
49.90
7177
3.18
DS053WU*1*
Downflow
200460.5
58.75
177082.8
51.90
7714
3.37
DS070WD*0*
Downflow
246904.5
72.36
205402.4
60.20
8613
2.74
DS070WD*1*
Downflow
252027
73.86
214273.6
62.80
9277
2.92
DS070WS*0*
Downflow
250319.5
73.36
207108.4
60.70
8613
2.75
DS070WS*1*
Downflow
255442
74.87
215979.6
63.30
9277
2.94
DS070WU*0*
Downflow
238025.5
69.76
201308
59.00
8613
2.77
DS070WU*1*
Downflow
243148
71.26
209838
61.50
9277
2.96
DS077WS*0*
Downflow
273883
80.27
225192
66.00
10500
2.5
DS077WS*1*
Downflow
263638
77.27
235428
69.00
10644
2.67
DS077WU*0*
Downflow
266711.5
78.17
221780
65.00
10500
2.5
DS077WU*1*
Downflow
270126.5
79.17
232016
68.00
10644
2.65
DS105WS*1*
Downflow
349013
102.29
288314
84.50
12890
2.43
DS105WU*1*
Downflow
353111
103.49
287972.8
84.40
13000
2.4
VS028WD*0*
Upflow
108597
31.83
97242
28.50
4297
2.856
VS028WD*1*
Upflow
109621.5
32.13
98265.6
28.80
4297
2.99
VS028WS*0*
Upflow
106206.5
31.13
96218.4
28.20
4297
3.092
VS028WS*1*
Upflow
107572.5
31.53
97242
28.50
4297
3.24
VS028WU*0*
Upflow
129087
37.83
107478
31.50
4297
2.78
VS028WU*1*
Upflow
130453
38.23
108501.6
31.80
4297
2.89
VS035WD*0*
Upflow
127038
37.23
112937.2
33.10
5078
2.556
167
Liebert® DS™
U.S. Department of Energy (DOE) Performance Data
Table 67
U.S. DOE performance table—Liebert DS upflow and downflow, water-cooled (continued)
Basic Model
Number
Airflow
Configuration
Total Cooling Capacity
Btu/hr
kW
Sensible Cooling Capacity
Btu/hr
kW
CFM
SCOP
VS035WD*1*
Upflow
129087
37.83
114643.2
33.60
5078
2.72
VS035WS*0*
Upflow
122940
36.03
110548.8
32.40
5078
2.85
VS035WS*1*
Upflow
124989
36.63
112596
33.00
5078
2.94
VS035WU*0*
Upflow
130794.5
38.33
114643.2
33.60
5078
2.75
VS035WU*1*
Upflow
132843.5
38.93
116349.2
34.10
5078
2.93
VS042WD*0*
Upflow
142747
41.84
127267.6
37.30
6054
2.386
VS042WD*1*
Upflow
146162
42.84
130679.6
38.30
6054
2.62
VS042WS*0*
Upflow
126696.5
37.13
126585.2
37.10
6054
2.526
VS042WS*1*
Upflow
144796
42.44
129656
38.00
6054
2.78
VS042WU*0*
Upflow
150260
44.04
130679.6
38.30
6054
2.41
VS042WU*1*
Upflow
153675
45.04
134091.6
39.30
6054
2.64
VS053WD*0*
Upflow
202851
59.45
177082.8
51.90
7812
3.07
VS053WD*1*
Upflow
203534
59.65
177424
52.00
7812
3.11
VS053WS*0*
Upflow
204558.5
59.95
177765.2
52.10
7812
3.066
VS053WS*1*
Upflow
205241.5
60.15
178106.4
52.20
7812
3.1
VS053WU*0*
Upflow
197728.5
57.95
174353.2
51.10
7812
3.05
VS053WU*1*
Upflow
198411.5
58.15
174694.4
51.20
7812
3.09
VS070WD*0*
Upflow
249295
73.06
211544
62.00
9374
2.69
VS070WD*1*
Upflow
250319.5
73.36
212226.4
62.20
9374
2.73
VS070WS*0*
Upflow
252368.5
73.96
213250
62.50
9374
2.7
VS070WS*1*
Upflow
253734.5
74.37
213932.4
62.70
9374
2.74
VS070WU*0*
Upflow
240416
70.46
207108.4
60.70
9374
2.71
VS070WU*1*
Upflow
241440.5
70.76
207790.8
60.90
9374
2.76
VS077WS*0*
Upflow
274566
80.47
228945.2
67.10
10156
2.51
VS077WS*1*
Upflow
276273.5
80.97
229968.8
67.40
10156
2.56
VS077WU*0*
Upflow
267394.5
78.37
225533.2
66.10
10156
2.49
VS077WU*1*
Upflow
268760.5
78.77
226215.6
66.30
10156
2.53
VS105WS*0*
Upflow
348330
102.09
286266.8
83.90
12890
2.29
VS105WS*1*
Upflow
349013
102.29
283537.2
83.10
12890
2.32
VS105WU*0*
Upflow
345256.5
101.19
285925.6
83.80
12500
2.29
VS105WU*1*
Upflow
345256.5
101.19
282854.8
82.90
12500
2.29
Liebert® DS™
168
U.S. Department of Energy (DOE) Performance Data
Table 68
U.S. DOE performance table—Liebert DS upflow and downflow, water-cooled with a fluid
economizer
Basic Model
Number
Airflow
Configuration
VS028*U*1*
VS028*U*0*
VS028*D*1*
VS028*D*0*
Total Cooling Capacity
Sensible Cooling Capacity
Btu/hr
kW
Btu/hr
kW
CFM
SCOP
Upflow
130111.5
38.13
108160.4
31.70
4297
2.86
Upflow
128745.5
37.73
107136.8
31.40
4297
2.75
Upflow
109280
32.03
97924.4
28.70
4297
2.94
Upflow
108255.5
31.73
96900.8
28.40
4297
2.82
VS035*U*1*
Upflow
132160.5
38.73
116008
34.00
5078
2.88
VS035*U*0*
Upflow
130111.5
38.13
114302
33.50
5078
2.71
VS035*D*1*
Upflow
129087
37.83
113960.8
33.40
5078
2.67
VS035*D*0*
Upflow
126355
37.03
112254.8
32.90
5078
2.52
VS042*U*1*
Upflow
152650.5
44.74
133068
39.00
6054
2.56
VS042*U*0*
Upflow
149577
43.84
129997.2
38.10
6054
2.37
VS042*D*1*
Upflow
145137.5
42.54
129314.8
37.90
6054
2.54
VS042*D*0*
Upflow
142064
41.64
126585.2
37.10
6054
2.34
VS053*U*1*
Upflow
197728.5
57.95
174012
51.00
7812
3.02
VS053*U*0*
Upflow
195679.5
57.35
172306
50.50
7812
2.91
VS053*D*1*
Upflow
202509.5
59.35
176400.4
51.70
7812
3.05
VS053*D*0*
Upflow
200802
58.85
175035.6
51.30
7812
2.93
VS070*U*1*
Upflow
240074.5
70.36
206426
60.50
9374
2.68
VS070*U*0*
Upflow
238708.5
69.96
205743.6
60.30
9374
2.64
VS070*D*1*
Upflow
248953.5
72.96
210861.6
61.80
9374
2.66
VS070*D*0*
Upflow
247587.5
72.56
210179.2
61.60
9374
2.62
VS077*U*1*
Upflow
266370
78.07
222121.2
65.10
9765
2.49
VS077*U*0*
Upflow
265345.5
77.77
223486
65.50
9765
2.42
VS105*U*1*
Upflow
345256.5
101.19
278419.2
81.60
12500
2.24
DS028*U*1*
Downflow
130794.5
38.33
109184
32.00
4210
3.06
DS028*U*0*
Downflow
128404
37.63
106795.6
31.30
4210
2.82
DS028*D*1*
Downflow
110646
32.43
99289.2
29.10
4210
3.2
DS028*D*0*
Downflow
108255.5
31.73
96900.8
28.40
4210
2.92
DS035*U*1*
Downflow
133185
39.03
117031.6
34.30
4976
3.09
DS035*U*0*
Downflow
129428.5
37.93
113278.4
33.20
4976
2.74
DS035*D*1*
Downflow
129428.5
37.93
115325.6
33.80
4976
2.86
DS035*D*0*
Downflow
126013.5
36.93
111572.4
32.70
4976
2.55
DS042*U*1*
Downflow
153675
45.04
134774
39.50
5957
2.72
DS042*D*1*
Downflow
146162
42.84
131362
38.50
5957
2.7
DS053*U*1*
Downflow
198753
58.25
175376.8
51.40
7714
3.23
DS053*U*0*
Downflow
195338
57.25
168552.8
49.40
7177
3.06
DS053*D*1*
Downflow
203534
59.65
177765.2
52.10
7714
3.25
DS053*D*0*
Downflow
200119
58.65
170941.2
50.10
7177
3.07
DS070*U*1*
Downflow
240416
70.46
207449.6
60.80
9277
2.82
DS070*U*0*
Downflow
235635
69.06
198578.4
58.20
8613
2.65
DS070*D*1*
Downflow
249295
73.06
211544
62.00
9277
2.79
DS070*D*0*
Downflow
244514
71.66
203014
59.50
8613
2.62
DS077*U*1*
Downflow
266711.5
78.17
224850.8
65.90
9998
2.56
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Guide Specifications
APPENDIX B - GUIDE SPECIFICATIONS
1.0
GENERAL
1.1
SUMMARY
These specifications describe requirements for a Mission Critical Cooling system. The system shall be
designed to control temperature and humidity conditions in rooms containing electronic equipment,
with good insulation and vapor barrier. The manufacturer shall design and furnish all equipment to
be fully compatible with heat dissipation requirements of the room.
1.2
DESIGN REQUIREMENTS
The Mission Critical Cooling system shall be a Liebert self-contained, factory-assembled unit with
(upflow) (downflow) air delivery. The system shall have a net total cooling capacity of ____ BTUH
(kW) with a net sensible cooling capacity of ____ BTUH (kW) based on an entering air temperature of
____ °F (°C) dry bulb and ____ °F (°C) wet bulb. The unit shall be supplied with ____ volt ____ ph
____ Hz electrical service. Net capacities shall include losses due to fan motor heat. The system
cooling capacity shall be factory-certified per ASHRAE127-2007.
1.3
SUBMITTALS
Submittals shall be provided after the agreement of the proposal and shall include: Single-Line
Diagrams; Dimensional, Electrical and Capacity Data; Piping and Electrical Connection Drawings.
2.0
PRODUCT
2.1
FRAME
The frame shall be MIG welded, formed sheet metal. It shall be protected against corrosion using the
autophoretic coating process. The frame shall be capable of being separated into three parts in the
field to accommodate rigging through small spaces.
2.1.1
Downflow Configurations
2.1.1.1 Downflow Air Supply with Discharge into Raised Floor
The supply air shall exit from the bottom of the unit directly into the raised floor. The EC fan shall be
mounted on the bottom of the unit. The fan shall be located to draw air through the filters and cooling
coil to ensure even air distribution and maximum coil performance.
2.1.1.1 Downflow Air Supply with Front Air Discharge
The supply air shall exit from the front of the cabinet opening. The EC fan shall be mounted on the
bottom of the unit. The fan shall be located to draw air through the filters and cooling coil to ensure
even air distribution and maximum coil performance.
2.1.1.2 Downflow Air Return
The return air shall enter the unit from the top.
2.1.2
Upflow Supply
2.1.2.1 Upflow Air Supply
The supply air shall exit from the top of the cabinet.
2.1.2.1 Upflow Air Supply, Front Throw
The supply air shall exit from the top of the cabinet with the air flow toward the front of the cabinet.
2.1.2.1 Upflow Air Supply, Rear Throw
The supply air shall exit from the top of the cabinet with the air flow toward the rear of the cabinet.
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Guide Specifications
2.1.2.2 Upflow Air Return, Front
The return air shall be through the front factory-installed grilles. The fan shall be above the coil and
pull air through the filters and cooling coil to ensure even air distribution and maximum coil
performance.
2.1.2.2 Upflow Air Return, Rear
The return air shall be through the rear of the cabinet, utilizing a rear return filter box. The fan shall
be above the coil and pull air through the filters and cooling coil to ensure even air distribution and
maximum coil performance.
2.1.3
Exterior Panels
The exterior panels shall be insulated with a minimum 1 in. (25mm), 1.5 lb. (0.68 kg) density fiber
insulation. The main front panel shall have captive 1/4 turn fasteners. The main unit color shall be
______.
2.1.3.1 Double-Skin Panels—Optional
The exterior panels shall be internally lined with 20 gauge sheet metal, sandwiching the insulation
between the panels, for easy cleaning.
2.2
FILTERS
The filter chamber shall be located within the cabinet, and filters shall be removable from the top of
the unit.
2.2.1
Filters, 4" MERV8 or MERV11
Filters shall be deep pleated 4" filters with an ASHRAE 52.2 MERV8 rating (45% ASHRAE 52.1) or
ASHRAE 52.2 MERV11 rating (60-65% ASHRAE 52.1).
2.2.1
Filters, 2" MERV8 Pre-Filter With 2" Filter MERV11
Filters shall be 2" ASHRAE 52.2 MERV8 (45% ASHRAE 52.1) pre-filter, with 2" ASHRAE 52.2
MERV11 (60-65% ASHRAE 52.1) efficiency filter.
2.2.2
Extra Filter Set
____ extra set(s) of filters shall be provided per system.
2.3
FAN SECTION
2.3.1
Electronically Commutated (EC) Fan
The fans shall be plug/plenum type, single inlet and shall be dynamically balanced. The drive package
shall be direct drive, electronically commutated and variable speed. The fans shall be located to draw
air over the A-frame coil to ensure even air distribution and maximum coil performance. EC fans
shall be available on downflow models, and fans may be lowered into a raised floor with a minimum
height of 24" (610mm). EC fans may operate within the Liebert DS cabinet, instead of under the floor.
EC fans shall be available on upflow models and fans shall operate outside the unit in a factory
provided plenum with a minimum height of 24" (610mm).
• DS028, DS035 and DS042 fan motor(s) shall be nominal 3.7hp (2.8kW) each with a maximum
operating speed of 1230 rpm; quantity, 1. Liebert Econ-O-Coil gets a 5.4hp (4.0kW) fan for 380-480V
(maximum 1370 rpm).
• DS053, DS070 and DS077 fan motors shall be nominal 4.0hp (3.0kW) each with a maximum
operating speed of 1520 rpm; quantity, 2.
• DS105 fan motors shall be nominal 3.4hp (2.5kW) each, with a maximum operating speed of 1700
rpm; quantity, 3. (Power rating for 380-480V is 3.4hp (2.5kW); for 200-240V power is
3.6hp [2.7kW].)
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Guide Specifications
2.3.1 Centrifugal Blower Section
The blower section shall be designed for ___ CFM (CMH) at an external static pressure of ___ in. wg.
(Pa). The fans shall be the centrifugal type, double-width and double-inlet, and shall be dynamically
balanced as a completed assembly. The shaft shall be heavy duty steel with self-aligning,
permanently sealed, pillow block bearings with a minimum L3 life of 200,000 hours. The fans shall
draw air through the V-frame coil to ensure even air distribution and maximum coil performance. A
static regain duct shall be factory-installed on the bottom of the blower.
2.3.1.1 Motor
The fan motor shall be ____ hp (kW) at 1750 rpm @ 60Hz (1450 rpm @50Hz), mounted to an
automatic, spring-tensioning base. The motor shall be removable from the front of the cabinet.
2.3.1.1.1 Premium Efficiency Motor
The fan motor shall be Open Drip-Proof, Premium efficiency and shall meet NEMA Premium
standard. Motor efficiency shall be ____%.
2.3.1.1.1 TEFC Motor-Optional
The motor shall be Totally Enclosed Fan Cooled for protection in harsh environments.
2.3.2
Drive Package
The motor sheave and fan pulley shall be double-width fixed pitch. Two belts, sized for 200% of the
fan motor horsepower shall be provided with the drive package. An auto-tension system shall provide
constant tension on the belts. Belts, shaft, blower bearings, sheave and pulley shall be warranted for
five years (parts only).
2.4
HUMIDIFIER
A humidifier shall be factory-installed inside the unit. Bypass air slots shall be included to enable
moisture to be absorbed into the air stream. The humidifier capacity shall be ____lb./hr (kg/hr). The
humidifier shall be removable from the front of the cabinet.
2.4.1
Infrared Humidifier
The humidifier shall be of the infrared type, consisting of high-intensity quartz lamps mounted above
and out of the water supply. The humidifier pan shall be stainless steel and arranged to be removable
without disconnecting high-voltage electrical connections. The complete humidifier section shall be
pre-piped, ready for field connection to the water supply. The humidifier shall be equipped with an
automatic water supply system and shall have an adjustable water-overfeed to prevent mineral
precipitation. A high-water detector shall shut down the humidifier to prevent overflowing. A factoryprovided air-gap shall prevent backflow of the humidifier supply water.
2.4.1
Steam Generating Canister Humidifier
A canister-type steam canister shall be factory-installed in the cooling unit and shall be controlled by
the microprocessor control system. It shall be complete with disposable canister, all supply and drain
valves, steam distributor and electronic controls. The need to change the canister shall be indicated
on the microprocessor control panel. The humidifier shall be designed to operate with water
conductivity from 200-500 micromhos. An air-gap within the humidifier assembly shall prevent
backflow of the humidifier supply water.
2.5
REHEAT
The environmental control unit shall include a factory-installed reheat to control temperature during
dehumidification.
2.5.1
Three-Stage Electric Reheat
The electric reheat coils shall be low watt density, 304/304 stainless steel fin tubular construction,
protected by thermal safety switches, shall be ____ kW (____ BTUH) controlled in three stages. The
reheat elements shall be removable from the front of the cabinet.
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Guide Specifications
2.5.1
SCR Electric Reheat
The electric reheat coils shall be low watt density, 304/304 stainless steel fin tubular construction,
protected by thermal safety switches, ____ kW (____ BTUH) controlled by multiple pulses to achieve
tight temperature control. The reheat elements shall be removable from the front of the cabinet.
2.5.1
Hot Water Reheat
The hot water reheat coil shall have copper tubes and aluminum fins with a capacity of ____ BTUH
(kW) when supplied with ____ °F (°C) entering water temperature at ____ GPM (l/s) flow rate.
Maximum pressure drop shall be ____ psi (kPa). The hot water reheat control system shall be factory
pre-piped with a two-way modulating control valve and cleanable Y-strainer.
2.6
DUAL REFRIGERATION SYSTEM
Each unit shall include two (2) independent refrigeration circuits and shall include hot gas mufflers
(semi-hermetic compressors units only), liquid line filter dryers, refrigerant sight glass with moisture
indicator, externally equalized expansion valves and liquid line solenoid valves. Compressors shall be
located outside the airstream and shall be removable and serviceable from the front of the unit.
2.6.1
Semi-Hermetic Compressor with Four-Step Unloaders Control
The compressor shall be semi-hermetic with a suction gas cooled motor, vibration isolators, thermal
overloads, oil sight glass, automatic reset high pressure switch with control lockout after three
failures, pump-down low-pressure transducer, suction line strainer, service valves, reversible oil
pumps for forced feed lubrication, a maximum operating speed of 1750 rpm. The system shall include
cylinder unloaders on the semi-hermetic compressors. The unloaders shall be activated by solenoid
valves which are controlled from the microprocessor control. In response to the return air
temperature, the microprocessor control shall activate the unloader solenoids and the liquid line
solenoids such that four stages of refrigeration cooling are obtained. The stages shall be: 1) one
compressor, partially loaded, 2) two compressors partially loaded, 3) one compressor partially loaded,
one compressor fully loaded, 4) two compressors fully loaded. On a call for dehumidification, the
microprocessor control shall ensure that at least one compressor is on full for proper humidity control.
2.6.1
Digital Scroll Compressors
The compressor shall be scroll-type with a variable capacity operation capability. The compressor
solenoid valve shall unload the compressor and allow for variable capacity operation. The compressor
shall be suction gas cooled motor, vibration isolators, thermal overloads, automatic reset highpressure switch with lockout after three failures, rotalock service valves, pump down low pressure
transducer, suction line strainer and a maximum operating speed of 3500 rpm. Consult factory for
575V availability.
2.6.1
Scroll Compressors
The compressor shall be scroll-type. The compressor shall be suction gas cooled motor, vibration
isolators, thermal overloads, automatic reset high pressure switch with lockout after three failures,
rotalock service valves, pump down low pressure transducer, suction line strainer and a maximum
operating speed of 3500 RPM.
2.6.1.1 Crankcase Heaters
The compressors shall include crankcase heaters, powered from the indoor unit electric panel.
2.6.2
Evaporator Coil
The evaporator coil shall be A-frame design with offset orientation and have ____sq. ft. (m2) face area,
three rows deep. It shall be constructed of rifled copper tubes and aluminum fins and shall have a
maximum face velocity of ____ ft. per minute (m/s) at ____ CFM (m3). A stainless steel condensate
drain pan shall be provided.
2.6.2.1 Polymeric Coating—Optional
The coil shall be coated with a high performance polymeric coating process to provide corrosion
resistance within 2 to 12 pH range.
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Guide Specifications
2.6.3
Dual-Cooling Source
The dual-cooling source system shall consist of an air-cooled or water-cooled compressorized system
with the addition of a chilled water coil (Liebert Econ-O-Coil™), a modulating control valve and a
comparative temperature sensor. The system shall be able to function either as a modulating chilled
water system or as a compressorized system, or a combination of both. The primary cooling mode
shall be chilled water. Switchover between the two cooling modes shall be performed automatically by
the microprocessor control. Four (4) pipes shall be included on water/glycol systems: Liebert Econ-OCoil supply, Liebert Econ-O-Coil return, condenser supply and condenser return.
2.6.4
Dual-Cooling Source Control Valve
The water circuit shall include a three-way modulating valve. The microprocessor positions the valve
in response to room conditions. Cooling capacity will be controlled by bypassing chilled water around
the coil. The modulating valve travel for dehumidification shall be proportional.
2.6.5
Cu-Ni Coil —Optional
™
A 70/30 Cu-Ni Liebert Econ-O-Coil shall be provided on dual-cooling units that are connected to a
cooling tower loop or other open water system. This option shall be required on open cooling tower
applications.
2.6.6
Polymeric Coating on Liebert Econ-O-Coil
™
and DX Coil —Optional
The coil shall be coated with a high performance polymeric coating process to provide corrosion
resistance within 2 to 12 pH range.
2.6.7
R-407C Refrigerant
The system shall be designed for use with R-407C refrigerant, which meets the EPA clean air act for
phase-out of HCFC refrigerants.
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Guide Specifications
3.0
CONTROLS
3.1
LIEBERT iCOM® MICROPROCESSOR CONTROL WITH 9-INCH COLOR
TOUCHSCREEN
The Liebert iCOM shall be microprocessor-based with a 9" color touchscreen display and shall be
mounted in an ergonomic, aesthetically pleasing housing. The display and housing shall be viewable
while the front panel is open or closed. The controls shall be menu-driven. The system shall display
user menus for active alarms, event log, graphic data, unit view/status overview (including the
monitoring of room conditions, operational status in percentage of each function, date and time), total
run hours, various sensors, display setup and service contacts. A password shall be required to make
system changes. Service menus shall include setpoints, standby settings (lead/lag), timers/sleep
mode, alarm setup, sensor calibration, maintenance/wellness settings, options setup, system/network
setup, auxiliary boards and diagnostics/service mode.
• Password Protection - The Liebert iCOM shall contain two unique passwords to protect
against unauthorized changes. An auto hide/show feature shall allow the user to see applicable
information based on the login used.
• Unit Backup and Restore - The user shall be able to create safe copies of important control
parameters. The Liebert iCOM shall have the capacity for the user to automatically backup unit
configuration settings to internal memory or USB storage drive. Configuration settings may be
transferred to another unit for a more streamlined unit startup.
• Parameter Download - The Liebert iCOM shall enable the user to download a report that
lists parameter names, factory default settings and user programmed settings in .csv format for
remote reference.
• Parameter Search - The Liebert iCOM shall have search fields for efficient navigation and
parameter lookup.
• Setup Wizards - The Liebert iCOM shall contain step-by-step tutorials or wizards to provide
easy setup of the control.
• Context-Sensitive Help - The Liebert iCOM shall have an onboard help database. The
database shall provide context-sensitive help to assist with setup and navigation of the menus.
• Display Setup - The user shall be able to configure the display information based on the
specific user’s preference. Language, units of measure, screen contrast, home screen layout,
backlight timer and the hide/show of certain readouts shall be configurable through the display.
• Additional Readouts - The display shall enable the user to configure custom widgets on the
main screen. Widget options will include items such as fan speed, call for cooling, call for freecooling, maintenance status, call for hot water reheat, call for electric reheat, call for
dehumidification, call for humidification, airflow, static pressure, fluid flow rate and cooling
capacity.
• Status LED’s - The Liebert iCOM shall show the unit’s operating status using an integral
LED. The LED shall indicate if the unit has an active alarm; if the unit has an active alarm that
has been acknowledged; or if the unit is On, Off or in standby status.
• Event Log - The Liebert iCOM shall automatically store the last 400 unit-only events
(messages, warnings, and alarms).
• Service Contact Information - The Liebert iCOM shall be able to store the local service or
sales contact information.
• Upgradeable - Liebert iCOM upgrades shall be performed through a USB connection.
• Timers/Sleep Mode – The menus shall allow various customer settings for turning the unit
On or Off.
• Menu Layout - The menus shall be divided into two main menus: User and Service. The User
screen shall contain the menus to access parameters required for basic unit control and setup.
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Guide Specifications
The Service screen shall be designed for service personnel and shall provide access to advanced
control setup features and diagnostic information.
• Sensor Calibration - The menus shall allow unit sensors to be calibrated with external
sensors.
• Maintenance/Wellness Settings - The menus shall allow reporting of potential component
problems before they occur.
• Options Setup - The menus shall provide operation settings for the installed components.
• Auxiliary Boards - The menus shall allow setup of optional expansion boards.
• Various Sensors: The menus shall allow setup and display of optional custom sensors. The
control shall include four customer accessible analog inputs for field-supplied sensors. The analog
inputs shall accept a 4 to 20mA signal. The user shall be able to change the input to 0 to 5VDC or
0 to 10VDC. The gains for each analog input shall be programmable from the front display. The
analog inputs shall be able to be monitored from the front display.
• Diagnostics/Service Mode - The Liebert iCOM control shall be provided with self-diagnostics
to aid in troubleshooting. The microcontroller board shall be diagnosed and reported as pass/not
pass. Control inputs shall be indicated as On or Off at the front display. Control outputs shall be
able to be turned On or Off from the front display without using jumpers or a service terminal.
Each control output shall be indicated by an LED on a circuit board.
3.2
ALARMS
All unit alarms shall be annunciated through both audio and visual cues, clearly displayed on the
screen, automatically recorded in the event log and communicated to the customers Building
Management System/Building Automation System. The Liebert iCOM control shall activate an
audible and visual alarm in event of any of the following conditions:
•
•
•
•
•
•
•
•
•
•
•
•
•
High Temperature
Low Temperature
High Humidity
Low Humidity
EC Fan Fault
Change Filters
Loss of Air Flow
Loss of Power
Compressor Overload (Optional)
Humidifier Problem
High Head Pressure
Low Suction Pressure
Custom Alarms
Custom alarm inputs shall be provided to indicate facility-specific events. Custom alarms can be
identified with programmable labels. Frequently used alarm inputs include:
• Leak Under Floor
• Smoke Detected
• Standby Unit On
Each alarm (unit and custom) shall be separately enabled or disabled, selected to activate the
common alarm and programmed for a time delay of 0 to 255 seconds.
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Guide Specifications
3.3
LIEBERT iCOM® CONTROL METHODS AND OPTIONS
The Liebert iCOM shall be factory-set to allow precise monitoring and control of the condition of the
air entering and leaving the unit. This control shall include predictive methods to control air flow and
cooling capacity based control sensors installed. Proportional and Tunable PID shall also be userselectable options.
3.3.1
Controlling Sensor Options
Liebert iCOM shall be flexible in the sense that it shall allow for controlling the capacity and fan from
multiple different sensor selections. The sensor selections shall be:
3.3.1.1 Cooling Capacity
• Supply
• Remote
• Return
3.3.1.2 Fan Speed
• Supply
• Remote
• Return
• Manual (for diagnostic or to receive a signal from the BMS through the Liebert remote
monitoring devices or analog input)
• Static Pressure
3.3.2
Temperature Compensation
The Liebert iCOM shall be able to adjust the capacity output based on supply and return temperature
conditions to meet SLA guidelines while operating to highest efficiency.
3.3.3
Humidity Control
Dew point and relative humidity control methods shall be available (based on user preference) for
humidity control within the conditioned space.
3.4
MULTI-UNIT COORDINATION
Liebert iCOM teamwork shall save energy by preventing multiple units in an area from operating in
opposing modes. Teamwork allows the control to optimize a group of connected cooling units equipped
with Liebert iCOM using the U2U (Unit-to-Unit) network. There shall be three modes of teamwork
operation:
• Teamwork Mode 1: Is best in small rooms with balanced heat loads. The controlling
temperature and humidity sensor readings of all units in operation (fan On) are collected to be
used for an average or worst-case sensor reading (user-selectable). The master unit shall send the
operating requirements to all operating units in the group. The control band (temperature, fan
and humidity) is divided and shared among the units in the group.
• Teamwork Mode 2: The Liebert iCOM calculates the worse-case demand for heating, cooling
humidification and dehumidification. Based on the greatest demand within the group, each unit
operates independently, meaning that the unit may respond to the thermal load and humidity
conditions based on the unit’s controlling sensors.
• Teamwork Mode 3 - Optimized Aisle: May be employed in large and small rooms with
varying heat loads. Optimized Aisle is the most efficient teamwork mode that allows the unit to
match cooling capacity with heat load. In the Optimized Aisle mode, the fans operate in parallel.
Fans can be controlled exclusively by remote temperature or using static pressure with a
secondary remote temperature sensor(s) as an override to ensure that the inlet rack temperature
is being met. Cooling (Compressors or Economizer) is controlled through unit supply air
conditions. Liebert iCOM calculates the average or worst-case sensor reading (user-selectable) for
heating, cooling humidification and dehumidification. Based on the demand within the group,
units will be allowed to operate within that mode until room conditions are satisfied.
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Guide Specifications
3.5
STANDBY LEAD-LAG
The Liebert iCOM® shall allow scheduled rotation to keep equal run time on units and provide
automated emergency rotation of operating and standby units.
3.6
STANDBY UNIT CASCADING
The Liebert iCOM cascade option shall allow the units to turn On and Off based on heat load when
utilizing Optimized Aisle, Teamwork Mode 3 and remote temperature sensors. Cascade mode
dynamically coordinates the fan speed to save energy and to meet the cooling demands. For instance,
with a Liebert iCOM group of six units and only 50% of the heat load, the Liebert iCOM shall operate
only four units at 80% fan speed and leave the other two units in standby. As the heat load increases,
the Liebert iCOM shall automatically respond to the additional load and bring on another unit,
increasing the units in operation to five. As the heat load shifts up or down, the control shall meet the
needs by cascading units On or putting them into standby.
3.7
WIRED SUPPLY SENSOR
Each Liebert iCOM shall have one factory-supplied and connected supply air sensor that may be used
as a controlling sensor or reference. When multiple sensors are applied for control purposes, the user
shall be able to control based on a maximum or average temperature reading.
3.8
VIRTUAL MASTER
As part of the robust architecture of the Liebert iCOM control, it shall allow for a virtual master that
coordinates operation. The Virtual Master function shall provide smooth control operation if the
group’s communication is compromised. When the lead unit, which is in charge of component staging
in teamwork, unit staging and standby rotation, becomes disconnected from the network, the Liebert
iCOM shall automatically assign a virtual master. The virtual master shall assume the same
responsibilities as the master until communication is restored.
3.9
VIRTUAL BACK-DRAFT DAMPER
The Liebert iCOM shall allow the use of a virtual back-draft damper, eliminating the need for a
mechanical damper. This shall allow the fans to spin slower (15% or less) to act as a damper.
3.10
COMPRESSOR SHORT CYCLE CONTROL
To help maximize the life of the compressor(s), there shall be start-to-next start delay for each single
compressor. The control shall monitor the number of compressor starts in an hour. If the compressor
starts more than 10 times in 60 minutes, the local display and remote monitoring shall notify the user
through a Compressor 1 or 2 Short Cycle event.
3.11
SYSTEM AUTO RESTART
The auto restart feature shall automatically restart the system after a power failure. Time delay shall
be programmable. An optional capacitive buffer may be provided for continuous control operation
through a power failure.
3.12
SEQUENTIAL LOAD ACTIVATION
On initial startup or restart after power failure, each operational load shall be sequenced with a
minimum delay of one second to minimize total inrush current.
3.13
LOW-PRESSURE MONITORING
Units shall ship standard with low-pressure transducers for monitoring individual compressor
suction pressure. If the pressure falls due to loss of charge or other mechanical cause, the
corresponding circuit shall shut down to prevent equipment damage. The user shall be notified of the
low-pressure condition through the local display and remote monitoring.
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3.14
WINTER START TIME DELAY—AIR-COOLED MODELS
An adjustable software timer shall be provided to assist with compressor starting during cold
weather. When the compressor starts, the low-pressure input shall be ignored for the period set in the
user-adjustable timer. Once the time period has elapsed after the compressor start, the low-pressure
input should remain in the normal state. If the low-pressure input does not remain in the normal
state when the time delay has elapsed, the circuit shall lock out on low pressure. The low-pressure
alarm shall be announced on the local display and communicated to remote monitoring systems.
3.15
ADVANCED FREEZE PROTECTION
Units shall ship standard with advanced freeze protection enabled. The advanced freeze protection
shall monitor the pressure of each circuit using a transducer. The control shall interact with the fan
and compressor to prevent the unit coil from freezing if circuit suction pressure drops. If a freeze
condition is detected, the user shall be notified through the local display and remote monitoring
systems.
3.16
ADVANCED HIGH-PRESSURE PROTECTION—WATER/GLYCOL-COOLED
MODELS WITH DIGITAL SCROLL COMPRESSORS
When the compressor is initially activated, the system shall be monitored for high pressure. When
high pressure is detected, the control shall alter the compressor operation to reduce the system
discharge pressure, preventing circuit shut down. If the unit is unsuccessful in correcting the problem
through this interaction, an alarm shall occur and the affected compressor shall be immediately
locked off. The control shall re-enable the compressor when the pressure returns to a safe level.
3.17
REFRIGERANT PRESSURE TRANSDUCER FAILURE
The control shall monitor the high-side and low-side refrigerant pressure transducers. If the control
senses the transducer has failed, has been disconnected, has shorted or the reading has gone out of
range, the user shall be notified through an event on the local display and remote monitoring. The
corresponding circuit that the failure has occurred on shall be disabled to prevent unit damage.
3.18
OIL RETURN PROTECTION
The control shall monitor compressor operation and staging to ensure that liquid and hot gas velocity
are maintained for proper oil return to the compressor.
3.19
DIGITAL SCROLL HIGH-TEMPERATURE PROTECTION
The control shall monitor digital scroll temperature during unit operation. A compressor temperature
limit shall be imposed to help prevent damage to the compressor. If the temperature reaches the
maximum temperature limit, the compressor shall be locked out and an alarm shall be annunciated
on the local display and through monitoring. After the initial lockout, the control shall continue to
monitor compressor temperature during the off-cycle and re-enable the circuit once a safe operating
temperature is reached. The control shall store the number of high-temperature trips. The number of
trips shall be accessible through the local display.
3.20
DIGITAL SCROLL SENSOR FAILURE
The control shall monitor the status of the digital scroll sensor(s). If the control senses that the
thermistor is disconnected, shorted or the reading goes out of range, the user shall be notified through
an event on the local display and remote monitoring.
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3.21
COMPRESSOR SEQUENCING
A user-selectable compressor sequencing parameter shall be provided and shall be accessible through
the local display. This sequencing parameter shall present the user with three choices:
• Always use Compressor 1 as the lead compressor.
• Always use Compressor 2 as the lead compressor.
• Auto: The unit shall automatically stage compressors to keep each unit’s run time within 8
hours of the other’s run time.
First priority: If the safety timings are acceptable for only one compressor, then it is the
next to be started/stopped.
Second priority: If both compressors are Off: The compressor with fewer working hours is
the next to start.
Third priority: If both compressors are in operation: the compressor that has been operating
longer since the last start is the next to be stopped.
3.22
COMPRESSOR HIGH- AND LOW-TEMPERATURE LIMIT PROTECTION
The control shall monitor the return air to ensure that the compressor(s) are operated within the
manufacturer’s defined window of operation. If the return air temperature deviates from the
manufacturer’s window of operation, the Liebert iCOM shall automatically adjust to prevent damage
to the cooling unit or reduction in its reliability.
3.23
COMPRESSOR RUN TIME MONITORING
The control shall log these compressor statistics:
•
•
•
•
•
•
•
•
•
•
•
Number of compressor starts
Run hours
Average run time
Starts per day
Starts per day worst
Number of high-pressure alarms
Operating phase in which the high-pressure alarm occurred
Number of low-pressure alarms
Operating phase in which the low-pressure alarm occurred
Number of compressor overloads
Number of high-temperature alarms (scroll compressors)
The user shall have the ability to monitor compressor operating temperature and pressure from the
local display to be used as a diagnostic tool.
3.24
MANUAL COMPRESSOR DISABLEMENT
The user shall have the ability to disable compressor operation using a set of either normally open or
normally closed dry contacts tied directly to the control or through remote monitoring. An additional
enable/disable feature shall be provided to allow the user to permanently disable an individual
compressor circuit for maintenance using the local display.
3.25
MANUAL COMPRESSOR OPERATION
The user shall be able to operate each compressor(s) manually from the local display. The user shall
be able to energize refrigeration components including liquid line solenoid valves, compressor
contactors, electronic expansion valves and adjust capacity for troubleshooting or repair. The control
shall monitor the compressor during manual operation and shall shut the compressor down if needed
to prevent electrical or mechanical damage.
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Guide Specifications
3.26
FLOODED START PROTECTION
The control shall isolate each compressor through a dedicated circuit liquid line solenoid valve and/or
electronic expansion valve. These devices, combined with a spring-closed discharge check valve and
compressor crankcase heater (air-cooled models), shall help ensure refrigerant does not migrate/carry
oil out of the compressor case during the off cycle.
3.27
COMPRESSOR DEHUMIDIFICATION
The control shall permit the user to specify which compressor is used for dehumidification. The
choices shall be 1st compressor, 2nd compressor, 1 or 2, or BOTH.
4.0
MISCELLANEOUS OPTIONS
4.1
NON-LOCKING DISCONNECT SWITCH—OPTIONAL
The manual disconnect switch shall be mounted in the high-voltage section of the electrical panel.
The switch shall be accessible with the door closed.
4.2
LOCKING DISCONNECT SWITCH—OPTIONAL
The manual disconnect switch shall be mounted in the high-voltage section of the electrical panel.
The switch shall be accessible from the outside of the unit with the door closed and shall prevent
access to the high-voltage electrical components until switched to the Off position.
4.3
HIGH TEMPERATURE SENSOR—OPTIONAL
The firestat shall be factory-installed in the unit and shall be factory-set to 125ºF (52ºC). It shall
immediately shut down the environmental control system when activated. The sensor shall be
mounted with the sensing element in the return air.
4.4
SMOKE SENSOR—OPTIONAL
The smoke sensor shall immediately shut down the environmental control system and activate the
alarm system when activated. The smoke sensor shall be mounted in the electrical panel with the
sensing element in the return air compartment. The smoke sensor is not intended to function as or
replace any room smoke detection system that may be required by local or national codes. The smoke
sensor shall include a supervision contact closure.
4.5
CONDENSATE PUMP, DUAL FLOAT—OPTIONAL
The condensate pump shall have a minimum capacity of 145 GPH (548 l/h) at 20 ft. (58 kPa) head. It
shall be complete with integral dual-float switches, pump-and-motor assembly and reservoir. The
secondary float shall send a signal to the local alarm and shall shut down the unit upon high water
condition.
4.6
LOW-VOLTAGE TERMINAL PACKAGE—OPTIONAL
Factory-installed and factory-wired terminals shall be provided for customer connection to lock out
the reheat and humidifier upon contact closure. Two extra normally open common alarm contacts
shall be provided. Two extra remote shutdown terminals shall be provided.
4.7
REMOTE HUMIDIFIER CONTACT—OPTIONAL
A pair of normally open contacts shall be provided for connection to a remote humidifier.
4.8
MAIN FAN OVERLOAD—OPTIONAL
A pair of normally open contacts shall be factory-installed and wired to indicate Main Fan Overload.
4.9
COMPRESSOR OVERLOAD—OPTIONAL
A pair of normally open contacts shall be factory-installed and factory-wired to each compressor to
indicate Compressor Overload.
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4.10
WIRED SUPPLY SENSOR(S)—OPTIONAL
Each Liebert iCOM shall have up to 10 optional supply air sensors connected and used as a
controlling sensors or reference. This shall be in addition to the standard factory-supplied supply air
sensor. When multiple sensors are applied for control purposes, the user shall be able to control based
on a maximum or average temperature reading.
4.11
WIRED REMOTE SENSOR(S)—OPTIONAL
Each Liebert iCOM shall have up to ten 2T sensors (20 sensor readings total) for control or reference.
As part of the U2U network, those sensors shall be shared and used to control the units and provide
greater flexibility, visibility and control using that to respond to changes in the data center. When the
sensors are used for control, the user may set the control to be based off a maximum or average of a
select highest temperature reading.
4.12
STATIC PRESSURE TRANSDUCER(S)—OPTIONAL
®
Each Liebert iCOM shall have up to four factory-installed and factory-programmed static pressure
transducer(s). The transducer(s) may be used for control of fan speed or reference of the supply
plenum pressure. When used for control, the Liebert iCOM shall be capable of:
• Sharing sensor data across multiple units in the U2U network to provide greater flexibility,
visibility and control. Only one transducer shall be required for a group of units however multiple
transducers may be applied per group and aggregated for redundancy.
• Offering the user selections to control fan from either the average or lowest pressure reading
collected in the U2U network.
4.13
AIR FLOW MONITORING—OPTIONAL
The Liebert iCOM shall monitor evaporator fan airflow for monitoring purpose.
4.14
REMOTE MONITORING—OPTIONAL
A factory-installed communication card shall be provided for monitoring and/or control. The
communication card shall be capable of connecting to Building Management System/Building
Automation System using the following protocols:
• BACnet IP—BACnet over Internet Protocol
• BACnet MSTP—BACnet Master-Slave/Token-Passing (MSTP) communications protocol over
a RS-485 serial network (also known as BACnet MSTP RS-485)
• Modbus RTU—Modbus Remote Terminal Unit (RTU) communication protocol over a RS-485
serial network (also known as Modbus RTU RS-485)
• Modbus TCP—Modbus Transmission Control Protocol over Internet Protocol (also known as
Modbus TCP/IP)
• SNMP
• YDN23 - YD-T-1363 specification protocol (also known as YD/T 1363)
The communications card shall be capable of connecting to two of these protocols at once.
4.15
POWER MONITORING—OPTIONAL
The unit shall be equipped with factory-programmed/installed power meters to monitor power
characteristics for either individual components or the total unit. These meters shall allow the user to
monitor meter connection status, input undervoltage, input RMS voltage leg-to-leg and leg-to-ground,
input current for each phase, energy consumption in kilowatt hours and instantaneous power in
watts. In multi-unit applications, a phase loss protection routine shall place a unit into standby mode
in the event.
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Guide Specifications
4.16
OPTIONS-AIR-COOLED SYSTEMS - MC CONDENSER
The indoor evaporator unit shall include refrigerant piping, with a factory holding charge of nitrogen.
The hot-gas and liquid lines shall be spun shut and shall include a factory-installed Schrader valve.
Field-relief of the Schrader valve shall indicate a leak-free system.
4.16.1 Air-Cooled Condenser
Condenser shall consist of microchannel condenser coil(s), propeller fan(s) direct-driven by individual
fan motor(s), electrical controls, housing and mounting legs. The Liebert air-cooled condenser shall
provide positive refrigerant head pressure control to the indoor cooling unit by adjusting heat
rejection capacity. Microchannel coils shall provide superior heat transfer, reduce air-side pressure
drop, increase energy efficiency and significantly reduce the system refrigerant volume required. EC
fans and fan operating techniques shall provide reduced maximum sound levels. Various methods
shall be available to match indoor unit type, maximum outdoor design ambient and maximum sound
requirements.
4.16
OPTIONS-AIR-COOLED SYSTEMS - FIN TUBE CONDENSER
The indoor evaporator unit shall include refrigerant piping, with a factory holding charge of nitrogen.
The hot-gas and liquid lines shall be spun shut and shall include a factory-installed Schrader valve.
Field-relief of the Schrader valve shall indicate a leak-free system.
4.16.1 Air-Cooled Condenser
The Liebert-manufactured outdoor air-cooled condenser shall be the low profile, multiple direct drive,
propeller fan type. The condenser shall balance the heat rejection of the compressor at ____ °F (°C)
ambient. The condenser shall be constructed of aluminum and contain a copper tube, aluminum fin
coil arranged for (horizontal) (vertical) air discharge.
4.16.2 Fan Speed Control
The winter control system for the air-cooled condenser shall be Liebert Fan Speed Control. The
variable speed motor shall operate from 0 to 230 volts single phase, 10 to 1050 RPM. It shall be
designed with ball bearings, permanent lubrication, internal overload protection, 40°C rise at full
speed, 65°C rise at 10 RPM. The control system shall be complete with transducers, thermostats and
electrical control circuit, factory prepackaged in the integral condenser control box. The transducer
shall automatically sense the highest head pressure of either operating compressor and control the
variable speed fan on the air-cooled condenser to properly maintain the head pressure. The Liebert
Fan Speed Control system shall provide positive startup and operation in ambient temperatures as
low as -20°F (-28.9°C). The air-cooled condenser shall have a ____ volt, ____ ph ____ Hz power supply.
4.16.3 Liebert Lee-Temp System
The winter control system for the air-cooled condenser shall be Liebert Lee-Temp. The Liebert LeeTemp system shall allow startup and positive head pressure control with ambient temperatures as
low as -30°F (-34.4°C). The Liebert Lee-Temp package shall include the following components for each
refrigeration circuit: insulated receiver, pressure relief valve, head pressure three-way control valve
and rotalock valve for isolating the refrigerant charge. The Liebert Lee-Temp receiver shall be
factory-insulated and mounted ready for the field-connection to the air-cooled condenser. The Liebert
Lee-Temp heater shall require a separate power supply of ____ volt, single phase.
4.16.4 Quiet-Line Condenser-Optional
Fan motors shall be 12-pole, 570 RPM, equipped with rain shields and permanently sealed ball
bearings. Motors shall include built-in overload protection. Motors shall be rigidly mounted on
die-formed galvanized steel supports. Disconnect switch shall be a standard feature.
4.16.5 Condenser Disconnect Switch-Optional
A disconnect switch shall be factory-mounted and wired to the condenser control panel, accessible
from the exterior (standard on Quiet-Line models).
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Guide Specifications
4.16
OPTIONS-WATER/GLYCOL SYSTEMS
4.16.1 Paradenser™ Condenser
The water-cooled condensers for each circuit shall be cleanable, shell-and-tube, counter flow type. The
heads shall be removable to allow for cleaning of the water tubes. Condensers shall be rated for a
maximum refrigerant pressure of 400 psi at 200°F (2758 kPa at 93.3°C). The condenser shall be
capable of operating with R-22 or R-407C refrigerant. The unit shall require ____ GPM (l/m) of ____ °F
(°C) water and have a maximum pressure drop of ____ psi (kPa).
4.16.2 Water/Glycol Regulating Valve, Two-Way With Bypass
The condenser shall be pre-piped with a two-way regulating valve which is head pressure actuated. A
gate-valve shall bypass the regulating valve.
4.16.2 Water/Glycol Regulating Valve, Three-Way
The condenser shall be pre-piped with a three-way regulating valve which is head pressure actuated.
4.16.3 Pressure Rating, 150 psi (1034 kPa)
The condenser water circuit shall be designed for a pressure of 150 psi (1034 kPa)
4.16.3 Pressure Rating, 350 psi (2413 kPa)
The condenser water circuit shall be designed for a pressure of 350 psi (2413 kPa)
4.16
OPTIONS-GLYCOOL SYSTEMS
4.16.1 GLYCOOL Coil
The GLYCOOL (Liebert Econ-O-Coil™) shall be constructed of copper tubes and aluminum fins. The
coil shall be A-frame or V-frame to minimize air pressure drop and shall be nested with the DX coil.
The Liebert Econ-O-Coil shall be upstream of the DX coil to enable pre-cooling of the air. The Liebert
Econ-O-Coil shall have a net sensible cooling capacity of ____ BTUH (kW) with 45°F (7.2°C) entering
glycol solution temperature. The system shall require ____ GPM (l/s) and the total unit pressure drop
shall not exceed ____ feet of water (kPa), when in the Liebert Econ-O-Coil mode of operation.
4.16.2 GLYCOOL Three-Way Control Valve
The GLYCOOL coil shall be equipped with a fully proportional three-way control valve. This
motorized control valve shall control the amount of flow to the GLYCOOL (Econ-O-Coil) coil to control
room temperature and relative humidity.
4.16.3 High Pressure System, 350 psi (2413 kPa)
The GLYCOOL system shall be designed for a pressure of 350 psi (2413 kPa).
4.16.4
Cu-Ni Econ-O-Coil
A 70/30 Cu-Ni Econ-O-Coil shall be provided for when the Liebert Econ-O-Coil is cooling tower loop or
other open water system. This option shall be required on open cooling tower applications.
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Guide Specifications
4.17 OPTIONS-DRYCOOLER
The drycooler shall be the low profile, slow speed, multiple direct drive, propeller fan type. The
drycooler shall be constructed of aluminum and contain a copper tube aluminum fin coil with an
integral electric control panel and disconnect switch. The drycooler shall be designed for ____ °F (°C)
ambient.
4.17.1 Pump Package
This system shall be provided with a centrifugal pump mounted in a weatherproof and vented
enclosure. The pump shall be rated for ____ GPM (l/m) at ____ ft. of head (kPa) and operate on ____
volt, 3-phase, ____ Hz.
4.17.1 Dual Pump Package
4.18
The dual pump package shall include pumps, enclosure, field-mounted flow switch and a separate,
factory-wired control box (including a lead-lag switch for the pumps). The standby pump shall
automatically start upon failure of the lead pump. Each pump shall be rated for ____ GPM (l/s) at ____
feet of head (kPa).
®
LIEBERT LIQUI-TECT SENSORS
Provide ____ (quantity) solid state water sensors under the raised floor.
4.19
FLOOR STAND
The floor stand shall be constructed of a welded steel frame. The floor stand shall have adjustable legs
with vibration isolation pads. The floor stand shall be ____ inches (mm) high.
4.19.1 Seismic Rated Floor Stand-Optional
The floor stand shall be seismic rated and shall be bolted to the unit frame.
4.19.1 Floor Stand Turning Vane-Optional
A turning vane shall be supplied with the floor stand and shall be designed for the specified floor
stand height.
4.20
RETURN AIR PLENUM FOR DOWNFLOW UNITS
The air plenum shall be constructed of 20 gauge steel, powder coated to match unit color. The plenum
shall be ___" (mm) high. A door shall be included in the front of the plenum to enable front filter
access. Air shall enter the plenum from the top.
4.21
DISCHARGE AIR PLENUM FOR UPFLOW UNITS, WITH DISCHARGE GRILLE(S)
The air plenum shall be constructed of 20 gauge steel, powder coated to match unit color. The plenum
shall be ___" (mm) high. Discharge air grilles shall be painted black and shall be included on the
(front), (rear), (left side) or (right side) of the plenum.
4.22
DISCHARGE AIR PLENUM FOR UPFLOW UNITS, WITHOUT DISCHARGE
GRILLE(S)
The air plenum shall be constructed of 20 gauge steel, powder-coated to match unit color. The plenum
shall be ___" (mm) high. Air shall discharge from the top of the plenum.
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5.0
EXECUTION
5.1
INSTALLATION OF THERMAL MANAGEMENT UNITS
5.1.1
General
Install Thermal Management units in accordance with manufacturer’s installation instructions.
Install units plumb and level, firmly anchored in locations indicated and maintain manufacturer’s
recommended clearances.
5.1.2
Electrical Wiring
Install and connect electrical devices furnished by manufacturer but not specified to be factorymounted. Furnish copy of manufacturer’s electrical connection diagram submittal to electrical
contractor.
5.1.3
Piping Connections
Install and connect devices furnished by manufacturer but not specified to be factory-mounted.
Furnish copy of manufacturer’s piping connection diagram submittal to piping contractor.
5.2
FIELD QUALITY CONTROL
Start Thermal Management units in accordance with manufacturer’s startup instructions. Test
controls and demonstrate compliance with requirements. These specifications shall describe
requirements for a computer room environmental control system. The system shall be designed to
maintain temperature and humidity conditions in the rooms containing electronic equipment.
The manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation
requirements.
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Technical Support / Service
Web Site
www.liebert.com
Monitoring
liebert.monitoring@emerson.com
800-222-5877
Outside North America: +00800 1155 4499
Single-Phase UPS & Server Cabinets
liebert.upstech@emerson.com
800-222-5877
Outside North America: +00800 1155 4499
Three-Phase UPS & Power Systems
800-543-2378
Outside North America: 614-841-6598
Environmental Systems
800-543-2778
Outside the United States: 614-888-0246
Locations
While every precaution has been taken to ensure the accuracy
and completeness of this literature, Liebert Corporation assumes no
responsibility and disclaims all liability for damages resulting from use of
this information or for any errors or omissions.
© 2014 Liebert Corporation
All rights reserved throughout the world. Specifications subject to change
without notice.
® Liebert is a registered trademark of Liebert Corporation.
All names referred to are trademarks
or registered trademarks of their respective owners.
United States
1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229
Europe
Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD) Italy
+39 049 9719 111
Fax: +39 049 5841 257
Asia
29/F, The Orient Square Building
F. Ortigas Jr. Road, Ortigas Center
Pasig City 1605
Philippines
+63 2 687 6615
Fax: +63 2 730 9572
SL-18827_REV0_12-15
Emerson Network Power
Liebert
www.emerson.com
www.EmersonNetworkPower.com