Liebert® CW™ Thermal Management System
System Design Manual - 26-400kW, 50 & 60Hz
TABLE OF CONTENTS
LIEBERT CW MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.0
BLOWER CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.0
CAPACITY AND PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.0
ELECTRICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.0
ELECTRICAL FIELD CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1
Electrical Field Connections—CW026-CW084 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2
Electrical Field Connections—Upflow Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3
Electrical Field Connections—Downflow Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4
Electrical Field Connections, High-Voltage—Upflow Models . . . . . . . . . . . . . . . . . . . . . . . . 23
4.5
Electrical Field Connections—Downflow Models CW146 and CW181 with EC Fans . . . . . 24
4.6
Standard Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.7
4.7.1
Optional Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Optional Low-Voltage Terminal Package Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.0
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1
Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2
Cabinet and Floor Planning Dimensions—CW026-CW084, Downflow with EC Fans. . . . . 28
5.3
Cabinet and Floor Planning Dimensions—Upflow with EC Fans. . . . . . . . . . . . . . . . . . . . . 36
5.4
Cabinet and Floor Planning Dimensions—Downflow with Centrifugal Fans . . . . . . . . . . . 40
5.5
Cabinet and Floor Planning Dimensions—Upflow with Centrifugal Fans. . . . . . . . . . . . . . 42
5.6
Dimensions—Cut-Down Frame, Downflow Models with Centrifugal Fans . . . . . . . . . . . . . 44
5.7
Blower Outlet and Deck Dimensions—Upflow Models CW106-CW114 with
Centrifugal Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.0
PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
6.1
Piping—General Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.2
Piping Connections—Downflow Models with EC Fans or Centrifugal Fans . . . . . . . . . . . . 48
6.3
Primary Piping Connection Locations—Downflow Models with EC Fans . . . . . . . . . . . . . . 50
6.4
Piping Connections—Upflow Models with EC Fans or Centrifugal Fans. . . . . . . . . . . . . . . 56
7.0
ANCILLARY ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.1
Floor Stand Dimensions—Downflow Models with EC Fans . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.2
Floor Stand Dimensions—Downflow Models with Centrifugal Fans . . . . . . . . . . . . . . . . . . 66
7.3
Plenum Dimensions—Upflow with EC Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.4
Plenum Dimensions—Upflow with Centrifugal Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.5
Ducting Dimensions—Upflow with EC Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7.6
Plenum and Ducting Dimensions—Upflow with Centrifugal Fans. . . . . . . . . . . . . . . . . . . . 72
8.0
SEISMIC APPLICATION—OPTIONAL UNIT CONFIGURATION REQUIRED . . . . . . . . . . . . . . . . 73
8.1
Seismic Certification Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.2
Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.3
Requirements for Seismic Anchorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
i
8.3.1
Seismic Anchors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
8.4
8.4.1
8.4.2
Anchor and Load Requirements of Seismic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Seismic Anchorage Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Seismic Connections to Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
9.0
LIEBERT AIR ECONOMIZER™ FIELD CONNECTION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 87
9.1
Customer-Supplied Equipment and Ductwork. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
10.0
GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
1.0
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
2.0
PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
3.0
EXECUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
ii
LIEBERT CW MODEL NUMBER NOMENCLATURE
CW
114
D
C
S
CW = Liebert CW
Floor Mount
Chilled Water
Unit
2
A = 460/3/60
B = 575/3/60
C = 208/3/60
D = 230/3/60
2 = 380/3/60
F = 380/3/50
G = 415/3/50
M = 380-415/3/50
D = Downflow
U = Upflow
Nominal Capacity, kW
106
026
114
038
146
041
181
051
300
060
400
076
084
089
A
C = Chilled Water
S = centrifugal Centrifugal Fan with
Standard Motor
V = centrifugal Centrifugal fan with
Variable Speed Drive
1 = EC Motorized Impeller
H = EC Motorized Impeller with THD
1234
A
XXXXXX
A-Z = Standard
configuration
S = SFA
2 = 2-Way Valve, Standard Pressure
3 = 3-Way Valve, Standard Pressure
1 = 2-Way Valve, High Pressure
T = 3-Way Valve, High Pressure
Not all Combinations of Options are Available on all Units
Balance Valve
• Not available on CW146, CW181, CW300 or CW400 models
Cut Down Frame Height Reduction of Downflow Units
• Not available with EC fans
Disconnect Switch, Locking/Non-Locking
• Not available on 208V units with 20hp motor
Electric Reheat
• Nonionizing reheat with a maximum sheath temperature not exceeding 420°F (215.5°C)
Flow Switch that Activates the Warning System
• Not available with two-way valve
Humidification and Reheat
• Not available on CW300 of CW400
Remote Humidifier Contacts
• Power to operate the remote humidifier does not come from the unit
Steam Generating Canister Humidifier
• Steam Humidifier with upflow units requires a plenum to contain the steam distribution
components. The minimum height for this plenum is 22-3/4 in. (58 cm).
• Not available on EC fan configurations
Steam/Hot Water Reheat Package
• Not available on EC fans units
Turning Vanes
• Not available on upflow units
• Not available on units with EC fans
• Not available on CW146/181
Upflow Models
• Front, rear or bottom return must be specified. (Bottom return is not available on CW106 and
CW114 models)
THD Transformer
• Available only on the Liebert CW106, CW114, CW146, or CW181 units; required for units
requiring a 575V power input
Variable Speed Drive
• Not available on 106 and 114 units with steam generating canister humidifier
• Not available on units with EC fans
• Not available on CW089, CW146, CW181, CW300 or CW400 units
1
Liebert® CW™
Blower Configurations
1.0
BLOWER CONFIGURATIONS
Figure 1
Blower configurations—Downflow, front and rear supply models, EC fans
Return Air
Return Air
Filter
Filter
Front
Front
Coil
Coil
Blower
Supply
Air
Raised
Floor
Blower
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
Supply
Air
Under-Floor Supply, EC Fans
Bottom Supply, EC Fans
Liebert® CW™
Floor Stand
(optional )
2
Blower Configurations
Figure 3
Blower configurations—Downflow, front and rear supply models, centrifugal fans
Return Air
Return Air
Filter
Filter
Front
Front
Coil
Coil
Blower
Raised
Floor
Floor
Stand
(optional)
Supply Air
Turning Vane
(optional )
Blower
Raised
Floor
Floor
Stand
(optional)
Supply Air
Turning Vane
(optional )
Front Supply, centrifugal Fans
Rear Supply, centrifugal Fans
3
Liebert® CW™
Blower Configurations
Figure 4
Blower configurations—Upflow, front return models, centrifugal fans
Supply Air
Supply Air
Front
Blower
Blower
Front
Coil
Coil
Filter
Filter
Return
Air
Return
Air
Top Supply, Front Throw Centrifugal Fans
Figure 5
Top Supply, Rear Throw Centrifugal Fans
Blower configurations—Upflow, rear return models, centrifugal fans
Supply Air
Supply Air
Blower
Front
Front
Coil External Filter Box on
CW106 and CW114
models only
Filter
Coil
Filter
Return
Air
Return
Air
Ductwork
Top Supply, Front Throw, Centrifugal Fans
Liebert® CW™
Blower
Ductwork
Top Supply, Rear Throw, Centrifugal Fans
4
Capacity and Physical Data
2.0
CAPACITY AND PHYSICAL DATA
Table 1
Performance data, CW026-CW400, 50/60Hz, upflow and downflow models with EC fans
026
038
041
051
060
076
084
089 *
106
114
146 *
181 *
300 *
400 *
CAPACITY DATA BTU/H (KW) BASED ON 45°F (7.2°C) ENTERING WATER, 10°F (5.5°C) WATER RISE
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
Total Capacity, kBTUH (kW)
83.2
(24.4)
115.3
(33.8)
152.7
(44.7)
175.3 231.5 240.6
(51.4) (67.80) (70.50)
297.2
(87.1)
347.1
358.4 448.8 522.9
(101.7) (105.0) (131.5) (153.2)
Sensible Capacity, kBTUH (kW)
83.2
(24.4)
113.1
(33.1)
136.6
(40.0)
173.6
(50.9)
205.5 230.3
(60.2) (67.50)
264.7
77.60)
295.5
(86.6)
336.8 393.5 472.5 604.6
911.4 1163.0
(98.7) (115.3) (138.4) (177.1) (267.0) (340.8)
Flow Rate, GPM (l/s)
17.6
(1.1)
24.6
(1.6)
32.3
(2.0)
37.8
(2.4)
49.4
(3.1)
51.6
(3.3)
63.1
(4.0)
72.5
(4.6)
76.6
(4.8)
109.2
(6.9)
151.1
(9.5)
209.9
(13.2)
292.6
(18.5)
Pressure Drop, ft (kPA)
11.8
(35.2)
18.1
(54.2)
16.4
(49.0)
9.3
(28.0)
10.2
(30.5)
10.3
(30.7)
17.9
(53.5)
21.6
(64.5)
20.1
35.8
10.9
(60.1) (106.9) (32.5)
25.2
(75.3)
10.1
(30.2)
23.8
(71.0)
95.5
(6.0)
720.1
(211)
1003.0 1390.0
(293.90) (407.3)
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
105.5
(30.9)
143.0
(41.9)
183.8
(53.9)
219.6
(64.3)
279.5
(81.9)
297.2
(87.1 )
357.6
411.9
438.0 537.3 630.3 850.1 1211.0 1641.0
(104.8) (120.70) (128.3) (157.4) (184.7) (249.1) (354.8) (480.8)
105.5
Sensible Capacity, kBTUH (kW) (30.9)
140.4
(41.1)
166.6
(48.8)
217.3
(63.7)
251.1
(73.6)
285.5
(83.7)
322.7
(94.6)
22.1
(1.4)
30.1
(1.9)
38.5
(2.4)
46.6
(2.9)
59
(3.7)
62.9
(4.0)
75.1
(4.70)
85.4
(5.4)
92.4
(5.8)
113.1
(7.1)
130.6
(8.2)
177
(11.2)
251.3
(15.9)
342.6
(21.6)
18.0
Pressure Drop, ft (kPA) (53.7)
26.7
(79.7)
22.6
(67.5)
13.8
(41.4)
14.1
( 42.2)
14.8
(44.2)
24.6
(73.6)
29.2
(87.1)
28.5
(85.1)
48.9
(146)
15.1
33.7
(45.2) (100.6)
14.1
(42.0)
31.7
(94.8)
515.4
(151)
Total Capacity, kBTUH (kW)
Flow Rate, GPM (l/s)
356.9
414.6 478.6 575.6 728.4 1112.0 1402.0
(104.6) (121.5) (140.2) (168.7) (213.4) (325.8) (410.8)
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
127.2
Total Capacity, kBTUH (kW) (37.3)
169.9
(49.8)
213.9
(62.7)
262.4
(76.9)
325.7 352.1
415.9
(95.4) (103.2) (121.9)
474.1
(138.9)
127.2
Sensible Capacity, kBTUH (kW) (37.3)
167.2
(49.0)
195.7
(57.3)
259.8
(76.1)
295.4
(86.6)
339.4
(99.4)
379.2
(111.1)
416.6
490.9 561.4 676.1 848.8 1307.0 1634.0
(122.1) (143.8) (164.5) (198.1) (248.7) (383.0) (478.8)
26.4
(1.7)
35.5
(2.2)
44.5
(2.8)
55.2
(3.5)
68.2
(4.3)
73.9
(4.7)
86.7
(5.5)
25.1
36.5
29.4
Pressure Drop, ft (kPA) (75.2) (109.1) (87.8)
19.0
(56.8)
18.4
( 55.0)
19.9
(59.4)
32.1
(95.8)
Flow Rate, GPM (l/s)
97.8
(6.2)
107.9
(6.8)
622.5 733.9 974.9 1412.0 1881.0
(182.4) (215.0) (285.6) (413.7) (551.1)
130.1
(8.2)
151.2
(9.5)
201.9
(12.7)
291.4
(18.4)
390.6
(24.6)
37.4
38.0
63.3
19.8
42.9
(111.8) (113.4) (189.2) (59.2) (128.1)
18.5
(55.2)
40.3
(120.5)
CAPACITY DATA BTU/H (KW) BASED ON 50F (10°C) ENTERING WATER, 12°F (6.66°C) WATER RISE
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
46.5
Total Capacity, kBTUH (kW) (13.6)
75.3
(22.1)
102.3
(30.0)
108.3
(31.7)
152.9
(44.8)
156.5
(45.9)
198.7
(58.2)
230.1
(67.4)
238.5
(69.9)
300.4 351.3 478.1
672.7
920.3
(88.0) (102.9) (140.1) (197.1) (269.6)
Sensible Capacity, kBTUH (kW)
46.5
(13.6)
75.3
(22.1)
102.3
(30)
108.3
(31.7)
152.9
(44.8)
156.5
(45.9)
198.7
(58.2)
230.1
(67.4)
238.5
(69.9)
300.4
(88)
Flow Rate, GPM (l/s)
8.6
(0.5)
13.9
(0.9)
18.5
(1.2)
20.4
(1.3)
28.2
(1.8)
29.1
(1.8)
36.3
(2.3)
41.0
(2.6)
43.9
(2.8)
55.0
(3.5)
62.6
(4.0)
85.8
(5.4)
120.1
(7.6)
166.1
(10.5)
Pressure Drop, ft (kPA)
3.0
(9.0)
6.0
(17.9)
5.9
(17.6)
2.9
(8.6)
3.6
(10.7)
3.5
(10.5)
6.4
(19.1)
7.5
(22.4)
7.1
(21.2 )
12.7
(38.0)
3.8
(11.5)
8.8
(26.4)
3.5
(10.6)
8.3
(24.8)
351.3 478.1
672.7
920.3
(102.9) (140.1) (197.1) (269.6)
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
74.5
Total Capacity, kBTUH (kW) (21.8)
104.7
(30.7)
134
(39.3)
158.6
(46.5)
202.3
(59.3)
215.5
(63.1)
260.2
(76.2)
294.9
(86.4)
320.4 389.4 461.0
(93.9) (114.1) (135.1)
607.6
(178)
1170
885.4
(259.4) (342.8)
Sensible Capacity, kBTUH (kW)
74.5
(21.8)
104.7
(30.7)
134
(39.3)
158.6
(46.5)
202.3
(59.3)
215.5
(63.1)
260.2
(76.2)
294.9
( 86.4)
320.4 389.4 461.0
(93.9) (114.1) (135.1)
607.6
(178)
885.4
1170
(259.4) (342.8)
Flow Rate, GPM (l/s)
13.3
(0.8)
18.7
(1.2)
23.8
(1.5)
28.8
(1.8)
36.4
(2.3)
38.9
(2.5)
46.5
(2.9)
51.8
(3.3)
57.6
(3.6)
69.8
(4.4)
80.8
(5.1)
107.3
(6.8)
155.5
(9.8)
207.6
(13.1)
6.7
Pressure Drop, ft (kPA) (20.2)
10.6
(31.7)
9.2
(27.7)
5.5
(16.4)
5.7
(17.1)
6.0
(17.9)
10.0
(30.0)
11.4
(34.2)
11.6
(34.8)
19.7
(58.9)
6.1
(18.3)
13.2
(39.6)
5.7
(17.1)
12.4
(37.2)
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
97.5
132.5
Total Capacity, kBTUH (kW) (28.60)
(38.8)
164.2
(48.1)
203.6
(59.7)
248.7
(72.9)
271.5
(79.5)
318.8
(93.4)
356.5
398.9 474.6 565.4 731.1 1088.0 1412.0
(104.5) (116.9) (139.1) (165.7) (214.2) (318.8) (413.7)
97.5
132.5
(28.60) (38.8)
164.2
(48.1)
203.6
(59.7)
248.7
(72.9)
271.5
(79.5)
318.8
(93.4)
356.5
398.9 474.6 565.4 731.1 1088.0 1407.0
(104.5) (116.9) (139.1) (165.7) (214.2) (318.8) (412.3)
Sensible Capacity, kBTUH (kW)
17.1
(1.1)
23.4
(1.50)
28.8
(1.80)
36.2
(2.3)
44.1
(2.80)
48.2
(3.0)
56.2
(3.6)
62.0
(3.9)
70.6
(4.5)
83.9
(5.3)
98.2
(6.2)
127.9
(8.1)
189.2
(11.9)
247.9
(15.6)
10.8
Pressure Drop, ft (kPA) (32.5)
16.1
(48.2)
13.1
(39.2)
8.4
(25.3)
8.1
(24.3)
8.8
(26.5)
14.2
(42.5)
15.9
(47.5)
17.0
(50.7)
27.6
(82.6)
8.7
(26.2)
18.2
(54.4)
8.2
(24.4)
17.2
(51.4)
Flow Rate, GPM (l/s)
*
Models CW089, CW146, CW181, CW300 and CW400 available only in downflow.
5
Liebert® CW™
Capacity and Physical Data
Table 2
Performance data, CW026-CW114, 50/60Hz, upflow and downflow models with centrifugal fans
026
038
041
051
060
076
084
106
114
Capacity Data BTU/H (kW) Based on 45°F (7.2°C) Entering Water, 10°F (5.5°C) Water Rise
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
77.5
107.1
142.8
236.7
229.5
231.6
290.6
345.0
Total Capacity, kBTUH (kW)
(22.7)
(31.4)
(41.8)
(69.4)
(67.2)
(67.9)
(85.1)
(101.1)
77.5
105.1
128
152.6
203.4
221.4
258
323.4
Sensible Capacity, kBTUH (kW)
(22.7)
(30.8)
(37.50)
(44.7)
(59.6)
(64.9)
(75.6)
(94.8)
17.1
24.0
31.3
51.2
49.9
51.9
63.7
76.1
Flow Rate, GPM (l/s)
(1.1)
(1.5)
(2.0)
(3.2)
(3.2)
(3.3)
(4.0)
(4.8)
11.2
17.3
15.5
16.5
10.4
10.4
18.2
19.9
Pressure Drop, ft (kPA)
(33.4 )
(51.7)
(46.3)
(49.3)
(31)
(31.1)
(54.5)
(59.4)
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
99.2
133.4
172.6
376.1
278.1
288.6
351.7
424.1
Total Capacity, kBTUH (kW)
(29.1)
(39.1)
(50.6)
(110.2)
(81.5)
(84.6)
(103.0)
(124.3)
99.2
131.9
157.0
192.9
249.5
276.9
316.7
400.7
Sensible Capacity, kBTUH (kW)
(29.1)
(38.6)
(46.0)
(56.5)
(73.1)
(81.1)
(92.8)
(117.4)
21.5
29.2
37.2
79.0
59.6
63.3
75.9
91.8
Flow Rate, GPM (l/s)
(1.4)
(1.8)
(2.4)
(5.0)
(3.8)
(4.0)
(4.8)
(5.8)
17.0
25.2
21.3
37.4
14.3
14.9
25.1
28.1
Pressure Drop, ft (kPA)
(51.0)
(75.3)
(63.5)
(111.7)
(42.9)
(44.6)
(75.0)
(84.1)
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
120.4
159.5
201.8
524.1
324.7
343.8
410.6
501.0
Total Capacity, kBTUH (kW)
(35.3)
(46.7)
(59.1)
(153.6)
( 95.1) (100.7) (120.3)
(146.8)
120.4
157.9
185.4
228.8
294.3
331.2
373.8
476.4
Sensible Capacity, kBTUH (kW)
(35.3)
(46.3)
(54.3)
(67.0)
(86.2)
(97.0)
(109.5)
(139.6)
25.7
34.4
43.0
108.5
68.8
74.3
87.6
107.2
Flow Rate, GPM (l/s)
(1.6)
(2.2)
(2.7)
(6.8)
(4.3)
(4.7)
(5.5)
(6.8)
23.9
34.5
27.7
68.2
18.7
20.1
32.7
37.5
Pressure Drop, ft (kPA)
(71.4) (103.0)
(82.7)
(203.7)
(56.0)
(60.1)
(97.6)
(112)
Capacity Data BTU/H (kW) Based on 50F (10°C) Entering Water, 12°F (6.66°C) Water Rise
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
41.0
68.1
94.4
Total Capacity, kBTUH (kW)
(12.0)
(20.0)
(27.7)
42.0
68.1
94.4
Sensible Capacity, kBTUH (kW) (12.0)
(20.0)
(27.7)
8.2
13.5
18.0
Flow Rate, GPM (l/s)
(0.5)
(0.9)
(1.1)
2.7
5.7
5.6
Pressure Drop, ft (kPA)
(8.3)
(17.1)
(16.8)
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
69.1
96.8
125.2
Total Capacity, kBTUH (kW) (20.2)
(28.4)
(36.7)
69.1
96.8
125.2
Sensible Capacity, kBTUH (kW)
(20.2)
(28.4)
(36.7)
12.9
18.3
23.2
Flow Rate, GPM (l/s)
(0.8)
(1.2)
(1.5)
6.4
10.1
8.8
Pressure Drop, ft (kPA)
(19.2)
(30.3)
(26.4)
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
91.5
124.0
154.6
Total Capacity, kBTUH (kW)
(26.8)
(36.3)
(45.3)
91.5
124
154.6
Sensible Capacity, kBTUH (kW)
(26.8)
(36.3)
(45.3)
16.6
22.8
28
Flow Rate, GPM (l/s)
(1.1)
(1.4)
(1.8)
10.3
15.4
12.5
Pressure Drop, ft (kPA)
(30.8)
(46.0)
(37.3)
Model CW089 not available with centrifugal fans
Liebert® CW™
6
427.8
(125.3)
371.4
(108.8)
92.7
(5.9)
33.9
(101.2)
513.0
(150.3)
453.1
(132.8)
109.7
(6.9)
46.2
(138)
595
(174.3)
532.7
(156.1)
126.0
(8.0)
59.7
(178.3)
101.8
(29.8)
150.3
(44.0)
147.0
(43.1)
191.2
(56)
225.8
( 66.2)
281.8
(82.6)
101.8
(29.8)
150.3
(44.0)
147
(43.1)
191.2
(56.0)
225.8
( 66.2)
281.8
(82.6)
20.3
(1.3)
28.5
(1.8)
29.3
(1.8)
36.6
(2.3)
43.7
(2.8)
53.1
(3.4)
2.8
(8.5)
3.6
(10.9)
3.5
(10.6)
6.5
(19.5)
7.0
(20.9)
11.9
(35.7)
152.1
(44.6)
200.1
(58.6)
206.4
(60.5)
253.4
(74.2)
307.2
(90.0)
367.4
(107.6)
152.1
(44.6)
200.1
(58.6)
206.4
(60.5)
253.4
(74.2)
307.2
(90.0)
367.4
(107.6)
28.6
(1.8)
36.7
(2.3)
39.1
(2.5)
47.0
(3.0)
57.2
(3.6)
67.3
(4.2)
5.4
(16.3)
5.8
(17.4)
6.0
(18.1)
10.2
(30.6)
11.5
(34.3)
18.4
(55.1)
196.9
(57.7)
247.1
(72.4)
262.7
(77)
312.6
(91.6)
385.2
(112.9)
449.3
(131.6)
196.9
(57.7)
247.1
(72.4)
262.7
(77.0)
312.6
(91.6)
385.2
(112.9)
449.3
(131.6)
36.1
(2.3)
44.6
(2.8)
48.5
(3.1)
56.8
(3.6)
70.2
(4.4)
80.9
(5.1)
8.4
(25.1)
8.2
( 24.7)
9.0
(26.8)
14.5
(43.3)
16.7
(50.1)
25.8
(77.2)
Capacity and Physical Data
Table 3
Performance data for select Liebert CW Units with EC fans, High Delta T conditions
Liebert CW Model Numbers
Entering
Water
106
114
146
181
300
400
CAPACITY DATA BTU/HR (KW) BASED ON 50°F (10°C) ENTERING WATER, 0.2" ESP WITH ASHRAE 127-2012 STANDARD
Return Air Conditions of 80°F DB, 62.8°F WB, 52.3°F Dew Point (26.6°C DB, 17.1°C WB) 38.1% RH
12°F (6.7°C)
Water Rise
14°F (7.8°C)
Water Rise
16°F (8.9°C)
Water Rise
Total, kBTUH (kW)
326.5 (95.6)
397.5 (116.4)
469.2 (137.4)
613.7 (179.7)
853.5 (249.9)
1098.7 (321.7)
Sensible, kBTUH (kW)
326.5 (95.6)
397.5 (116.4)
469.2 (137.4)
613.7 (179.7)
853.5 (249.9)
1098.7 (321.7)
Flow Rate, GPM (l/s)
58.6 (3.7)
71.1 (4.5)
82.2 (5.2)
108.3 (6.8)
150.2 (9.5)
195.7 (12.3)
Press. Drop, ft (kPa)
12.0 (35.9)
20.4 (61.0)
6.3 (18.8)
13.4 (40.1)
5.3 (15.8)
11.2 (33.5)
Total, kBTUH (kW)
301.6 (88.3)
376.7 (110.3)
439.2 (128.6)
588.8 (172.4)
797.1 (233.4)
1054.6 (308.8)
Sensible, kBTUH (kW)
301.6 (88.3)
376.7 (110.3)
439.2 (128.6)
588.8 (172.4)
797.1 (233.4)
1054.6 (308.8)
Flow Rate, GPM (l/s)
46.6 (2.9)
58.0 (3.7)
66.1 (4.2)
89.3 (5.6)
120.8 (7.6)
161.6 (10.2)
Press. Drop, ft (kPa)
7.8 (23.3)
14.0 (41.8)
4.2 (12.6)
9.4 (28.1)
3.6 (10.8)
7.9 (23.6)
Total, kBTUH (kW)
273.9 (80.2)
353.5 (103.5)
405.0 (118.6)
560.1 (164.0)
733.2 (214.7)
1004.7 (294.2)
Sensible, kBTUH (kW)
273.9 (80.2)
353.5 (103.5)
405.0 (118.6)
560.1 (164.0)
733.2 (214.7)
1004.7 (294.2)
Flow Rate, GPM (l/s)
37.4 (2.4)
47.8 (3.0)
53.6 (3.4)
74.6 (4.7)
97.8 (6.2)
135.1 (8.5)
Press. Drop, ft (kPa)
5.2 (15.5)
9.8 (29.3)
2.9 (8.7)
6.8 (20.3)
2.4 (7.2)
5.7 (17.0)
CAPACITY DATA BTU/HR (KW) BASED ON 50°F (10°C) ENTERING WATER, 0.2" ESP WITH ASHRAE 127-2012 STANDARD
Return Air Conditions of 85°F DB, 64.5°F WB, 52.3°F Dew Point (29.4°C DB, 18.1°C WB) 32.4% RH
12°F (6.7°C)
Water Rise
14°F (7.8°C)
Water Rise
16°F (8.9°C)
Water Rise
Total, kBTUH (kW) 406.4 (119.0)
484.6 (141.9)
575.8 (168.6)
738.4 (216.2)
1048.8 (307.1)
1325.8 (388.2)
Sensible, kBTUH (kW) 406.4 (119.0)
484.6 (141.9)
575.8 (168.6)
738.4 (216.2)
1048.8 (307.1)
1320.0 (386.5)
Flow Rate, GPM (l/s)
71.9 (4.5)
85.6 (5.4)
99.8 (6.3)
129.0 (8.1)
182.7 (11.5)
233.5 (14.7)
Press. Drop, ft (kPa)
17.5 (52.3)
28.6 (85.5)
9.0 (26.9)
18.5 (55.3)
7.6 (22.7)
15.4 (46.0)
Total, kBTUH (kW) 383.9 (112.4)
466.2 (136.5)
548.8 (160.7)
717.2 (210.0)
998.9 (292.5)
1284.8 (376.2)
Sensible, kBTUH (kW) 383.9 (112.4)
466.2 (136.5)
548.8 (160.7)
717.2 (210.0)
998.9 (292.5)
1284.8 (376.2)
Flow Rate, GPM (l/s)
58.3 (3.7)
70.7 (4.5)
81.8 (5.2)
107.6 (6.8)
149.5 (9.4)
194.4 (12.3)
Press. Drop, ft (kPa)
11.9 (35.6)
20.1 (60.1)
6.2 (18.5)
13.2 (39.5)
5.3 (15.8)
11.0 (32.9)
Total, kBTUH (kW) 359.3 (105.2)
446.0 (130.6)
519.4 (152.1)
692.9 (202.9)
944.3 (276.5)
1242.8 (363.9)
Sensible, kBTUH (kW) 359.3 (105.2)
446.0 (130.6)
519.4 (152.1)
692.9 (202.9)
944.3 (276.5)
1242.8 (363.9)
Flow Rate, GPM (l/s)
48.0 (3.0)
59.3 (3.7)
67.9 (4.3)
91.1 (5.7)
124.1 (7.8)
164.9 (10.4)
Press. Drop, ft (kPa)
8.3 (24.8)
14.5 (43.3)
4.4 (13.2)
9.8 (29.3)
3.7 (11.1)
8.1 (24.2)
CAPACITY DATA BTU/HR (KW) BASED ON 50°F (10°C) ENTERING WATER, 0.2" ESP WITH ASHRAE 127-2012 STANDARD
Return Air Conditions of 90°F DB, 66.1°F WB, 52.3°F Dew Point (32.2°C DB, 18.9°C WB) 27.6% RH
12°F (6.7°C)
Water Rise
14°F (7.8°C)
Water Rise
16°F (8.9°C)
Water Rise
Total, kBTUH (kW) 484.3 (141.8)
569.0 (166.6)
678.6 (198.7)
861.6 (252.3)
1237.7 (362.4)
1547.1 (453.0)
Sensible, kBTUH (kW) 484.3 (141.8)
569.0 (166.6)
678.6 (198.7)
858.6 (251.4)
1237.7 (362.4)
1535.1 (449.5)
Flow Rate, GPM (l/s)
84.8 (5.4)
99.6 (6.3)
116.9 (7.4)
149.5 (9.4)
214.1 (13.5)
270.2 (17.0)
Press. Drop,- ft (kPa)
23.8 (71.1)
37.9 (113.3)
12.0 (35.9)
24.2 (72.3)
10.2 (30.5)
20.1 (60.1)
Total, kBTUH (kW) 463.1 (135.6)
552.2 (161.7)
654.0 (191.5)
840.5 (246.1)
1192.9 (349.3)
1506.1 (441.0)
Sensible, kBTUH (kW) 463.1 (135.6)
552.2 (161.7)
654.0 (191.5)
840.5 (246.1)
1192.9 (349.3)
1506.1 (441.0)
Flow Rate, GPM (l/s)
69.6 (4.4)
83.0 (5.2)
96.7 (6.1)
125.1 (7.9)
177.1 (11.2)
225.8 (14.2)
Press. Drop,- ft (kPa)
16.5 (49.3)
27.0 (80.7)
8.5 (25.4)
17.4 (52.0)
7.2 (21.5)
14.5 (43.3)
Total, kBTUH (kW) 440.6 (129.0)
533.8 (156.3)
627.4 (183.7)
819.3 (239.9)
1142.7 (334.6)
1469.9 (430.4)
Sensible, kBTUH (kW) 440.6 (129.0)
533.8 (156.3)
627.4 (183.7)
819.3 (239.9)
1142.7 (334.6)
1469.9 (430.4)
Flow Rate, GPM (l/s)
58.1 (3.7)
70.3 (4.4)
81.3 (5.1)
106.9 (6.7)
148.8 (9.4)
193.1 (12.2)
Press. Drop, ft (kPa)
11.7 (35.0)
19.8 (59.2)
6.1 (18.2)
13.0 (38.9)
5.2 (15.5)
10.8 (32.3)
7
Liebert® CW™
Capacity and Physical Data
Table 4
Motor size required to deliver rated airflow, models with centrifugal fans
External Static
Pressure
0.2"
0.4"
0.6"
0.8"
1.0"
1.2"
1.4"
5
5
5
Model
Rated Airflow
CFM (l/s)
026
5050 (2383)
3
038
5850 (2761)
5
5
5
—
—
—
041
5750 (2714)
5
—
—
—
—
—
—
051
9150 (4318)
7.5
7.5
—
—
—
—
—
060
8900 (4200)
7.5
7.5
—
—
—
—
—
076
12100 (5711)
10
15
15
15
15
—
—
084
11650 (5498)
10
15
15
15
15
—
—
106
17100 (8070)
15
15
15
15
15
—
—
114
16500 (7787)
15
15
15
15
—
—
—
*
Motor Size, hp
5
5
5
Delivered airflow is less than rated airflow
Table 5
Maximum airflow with maximum motor size at listed static pressure, models with centrifugal
fans
External Static
Pressure
0.2"
0.4"
0.6"
0.8"
1.0"
1.2"
1.4"
Model
Rated
Airflow
CFM (l/s)
026
5050
(2383)
5050
(2383)
5050
(2383)
5050
(2383)
5050
(2383)
5050
(2383)
5050
(2383)
5050
(2383)
038
5850
(2761)
5850
(2761)
5850
(2761)
5850
(2761)
5750
(2714)
5600
(2643)
5450
(2572)
5350
(2525)
041
5750
(2714)
5750
(2714)
5750
(2714)
5600
(2643)
5450
(2572)
5350
(2525)
—
—
051
9150
(4318)
9150
(4318)
9150
(4318)
9100
(4295)
8900
(4200)
8700
(4106)
8550
(4035)
8350
(3941)
060
8900
(4200)
8900
(4200)
8900
(4200)
8750
(4130)
8550
(4035)
8400
(3964)
8200
(3870)
8050
(3799)
076
12100
(5711)
12100
(5711)
12100
(5711)
12100
(5711)
12100
(5711)
12100
(5711)
11600
(5475)
11000
(5191)
084
11650
(5498)
11650
(5498)
11650
(5498)
11650
(5498)
11650
(5498)
11650
(5498)
11400
(5380)
NA
106
17100
(8070)
17100
(8070)
17100
(8070)
17100
(8070)
17100
(8070)
17100
(8070)
16400
(7740)
16100
(7598)
114
16500
(7787)
16500
(7787)
16500
(7787)
16500
(7787)
16500
(7787)
16100
—
—
Liebert® CW™
Airflow, CFM (l/s)
8
Capacity and Physical Data
Table 6
Physical data, Liebert CW026 - CW089, 50 and 60Hz models
Model Sizes
026
038
041
051
060
076
084
089
FAN SECTION
Some options or combinations of options may result in reduced airflow. Consult your Emerson representative for
recommendations.
Fan Data - EC Fans - Available in Upflow and Downflow Orientations (CW089 available in downflow only)
Nominal Air Volume, CFM (CMH)
5,250
(8,925)
6,050
(10,285)
5,950
(10,115)
9,200
(15,640)
9,200
(15,640)
12,400
(21,080)
11,900
(20,230)
12,100
(20,570)
Fan Motor, Maximum hp (kW),
Downflow, each
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
3.6 (2.7)
3.6 (2.7)
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
Fan Motor, Max hp (kW),
Upflow, each
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
Standard Ext Static Pressure,
inches of water (PA)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
1
1
1
2
2
2
2
2
Number of Fans
Fan Data - Variable Pitch, Two-Belt Drive Package - Available in Upflow and Downflow Configurations
Nominal Air Volume,
CFM (CMH)
5,050
(8,580)
Fan Motor, Maximum hp (kW),
each
3.0 (2.2)
Standard Ext Static Pressure,
inches of water (PA)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
1
1
1
2
2
2
2
2
Number of Fans
5,850
(9,940)
5,750
(9,770)
9,150
15,550
5.0 (3.7)
8,900
(15,120)
12,100
(20,560)
7.5 (5.6)
11,650
(19,790)
N/A
10.0 (7.5)
CHILLED WATER COIL
Face Area, ft2 (m2)
11.7 (1.1)
Number of Rows
Face Velocity, EC Fans, FPM
(m/s)
18.5 (1.7)
36.3
(3.4)
25.0 (2.3)
3
4
6
4
6
4
6
6
450
(2.28)
519
(2.63)
510
(2.59)
503
(2.55)
503
(2.55)
496
(2.51)
476
(2.41)
333
(1.69)
Chilled Water Valves (Standard valves, Maximum design water pressure 150 PSI[1034.3 kPA]. Higher pressure available as
an option. Consult your Emerson representative for information).
Valve Actuator, Sensors, and
Body
Valve CV
Modulating Valve Actuator with Proportional Sensors and either
2-Way or 3-Way Valve Body
11.6
11.6
28.9
28.9
46.2
46.2
46.2
46.2
1
1-1/4
1-1/2
1-1/2
2
2
2
2
Valve Size, oin.
2-Way Valve (Opt) Close-off
Pressure, PSI (kPA)
86 (593)
70 (483)
45 (310)
45 (310)
REHEAT SECTION
Electric Reheat - Three Stage, Fin/Tube
Capacity, BTU/HR (kW)
Steam Reheat: 218°F (103.3°C)
Steam, 75°F (23.9°C) EAT
Capacity, BTU/HR (kW)
Hot Water Reheat @ 180°F
(82.2°C) EWT & 75°F (23.8°C)
EAT
34,130
(10)
51,195 (15)
68,260
(20)
83,325
(25)
102,390 (30)
Std MTR - Modulating 2-way, 150 PSI (1034.3 kPa) max operating pressure.
Not applicable to units with EC fans.
Unit CFM reduced by 300 with standard motor (142 l/s)
85,800
(25.1)
85,800
(25.1)
85,800
(25.1)
93,400
(27.4)
144,500
(42.4)
163,200
(47.8)
163,200
(47.8)
N/A
Std MTR - Modulating 2-way, 150 PSI (1034.3 kPa) max operating pressure. Not
applicable to units with EC fans.
Unit CFM reduced by 300 with standard motor (142 l/s)
Capacity, BTU/HR (kW)
47,000
(13.7)
49,500
(14.5)
49,500
(14.5)
89,900
(26.3)
89,900
(26.3)
125,200
(36.7)
125,200
(36.7)
N/A
Flow Rate, GPM (l/s)
5 (0.31)
5 (0.31)
5 (0.31)
8 (0.50)
8 (0.50)
8 (0.50)
8 (0.50)
N/A
Pressure Drop, PSI (kPA)
3.5 (24.1)
1.6 (11.0)
9
1.6 (11.0)
Liebert® CW™
Capacity and Physical Data
Table 6
Physical data, Liebert CW026 - CW089, 50 and 60Hz models (continued)
Model Sizes
026
038
041
051
060
076
084
089
HUMIDIFIER SECTION
Infrared Humidifier Note (50Hz Models are 22.1 lb/h (10.0 kg/h); 9.6 kW)
Capacity, lb/hr (kg/h)
11 (5.0)
11 (5.0)
11 (5.0)
17.4 (7.9)
4.8
4.8
4.8
6.4
kW
17.4 (7.9) 22.1 (10) 22.1 (10) 22.1 (10)
6.4
9.6
9.6
9.6
Steam Generating Humidifier, Not applicable to units with EC fans. (Water Conductivity between 200-500 micromhos is
required for ideal operation)
Capacity, lb/hr (kg/h)
11 (5.0)
kW
3.6
3.6
22 (10.0)
3.6
7.2
7.2
N/A
7.2
7.2
7.2
10 (68.9)
N/A
Steam Grid Humidifier - All Models (Standard Selection, 5 PSIG (34.5 kPa), Steam 14 lb/hr. [6.4 kg/h])
Supply Steam Pressure, PSIG
(kPa)
—
2 (13.8)
4 (27.6)
5 (34.5)
6 (41.4)
8 (55.2)
Capacity, lb/hr (kg/h), w/ 5/32"
orificie
—
8 (3.6)
12 (5.4)
14 (6.4)
16 (7.3)
19 (8.6)
21 (9.5)
FILTER SECTION
Disposable Type - Nominal Size and Quantities, MERV8 and MERV11 (option)
Downflow Models
Nominal Size, in
18 x 24
18 x 24
18 x 24
18 x 24
18 x 24
18 x 24
18 x 24
24 x 31
4
4
4
6
6
8
8
5
24 x 24
24 x 24
24 x 24
24 x 24
24 x 24
24 x 24
24 x 24
N/A
2
2
2
3
3
4
4
N/A
18 x 24
18 x 24
18 x 24
18 x 24
18 x 24
18 x 24
18 x 24
N/A
4
4
4
6
6
8
8
N/A
Quanity
Upflow Models (Front Return)
Nominal Size, in
Quanity
Upflow Models (Bottom & Rear Return)
Nominal Size, in
Quanity
CONNECTION SIZES
1-1/8
1-3/8
1-5/8
1-5/8
2-1/8
2-1/8
2-1/8
2-5/8
Infrared Humidifier, OD Copper
Chilled Water, OD Copper
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
1-1/4
Steam Reheat, MPT, FC Blower
only
1/2
1/2
1/2
1/2
3/4
3/4
3/4
N/A
Hot Water Reheat, OD Copper,
FC Blower only
5/8
5/8
5/8
7/8
7/8
7/8
7/8
N/A
Steam Humidifier, MPT, FC
Blower only
1/2
1/2
1/2
1/2
1/2
1/2
1/2
N/A
Liebert® CW™
10
Capacity and Physical Data
Table 7
Physical data—Liebert CW106 - CW400, 50 & 60Hz models
Model Sizes
106
114
146
181
300
400
FAN SECTION
Some options or combinations of options may result in reduced airflow. Consult your Emerson representative for
recommendations.
Fan Data - EC Fans - CW106 & CW114 are available in Upflow and Downflow Orientations. CW146 to CW400 are available in
Downflow only.
Nominal Air Volume, CFM (CMH)
17,300
(29,410)
17,300
(29,410)
21,000
(35,700)
24,000
(40,800)
40,500
(68,850)
45,700
(77690)
Fan Motor, Maximum hp (kW), Downflow,
each
4.2 (3.4)
4.2 (3.4)
4.2 (3.4)
5.4 (4.4)
4.2 (3.4)
5.4 (4.4)
Fan Motor, Maximum hp (kW), Upflow, each
4.2 (3.4)
4.2 (3.4)
—
—
—
—
Standard Ext Static Pressure, inches of
water (PA)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
0.2 (50)
3
3
3
3
6
6
Number of Fans
Fan Data - Variable Pitch, Two-Belt Drive Package - CW106 & CW114 are available in Upflow and Downflow Orientations.
CW146 to CW400 are available in with EC Fans only.
Nominal Air Volume, CFM (CMH)
17,100
(29,050)
16,500
(28,030)
—
—
—
—
Fan Motor, Maximum hp (kW), each
3.0 (2.2)
5.0 (3.7)
—
—
—
—
Standard Ext Static Pressure, inches of
water (PA)
0.2 (50)
0.2 (50)
—
—
—
—
3
3
—
—
—
—
56.3 (5.3)
56.3 (5.3)
4
6
4
6
373 (1.89)
427 (2.16)
359 (1.82)
406 (2.06)
Number of Fans
CHILLED WATER COIL
Face Area, ft2 (m2)
Number of Rows
36.3 (3.4)
4
Face Velocity, EC Fans, FPM (m/s)
6
476 (1.34)
112.6 (10.6)
Chilled Water Valves (Standard valves, Maximum design water pressure 150 PSI [1034.3 kPA]. Higher pressure available as
an option. Consult your Emerson representative for information).
Modulating Valve Actuator with Proportional Sensors and
either 2-Way or 3-Way Valve Body
Valve Actuator, Sensors, & Body
Valve CV
Valve Size, in.
46.2
2
2
2-Way Valve (Opt) Close-off Pressure, PSI
(kPA)
45
(310)
46.2
qty 2
46.2
qty 2
46.2
qty 4
46.2
qty 4
2
2
2
2
200
(1,378)
200
(1,378)
200
(1,378)
REHEAT SECTION
Electric Reheat - Three-Stage, Fin Tube
Capacity, BTU/HR (kW)
Steam Reheat: 218°F (103.3°C) Steam,
75°F (23.9) EAT
Capacity, BTU/HR (kW)
Hot Water Reheat @ 180°F (82.2°C) EWT
75°F (23.8°C) EAT
Capacity, BTU/HR (kW)
Flow Rate, GPM (l/s)
Pressure Drop, PSI (kPA)
102,390 (30)
102,390 (30)
—
—
Standard MTR - Modulating 2-way, 150 PSI (1034.3 kPa) maximum operating
pressure. Not applicable to units with EC fans.
Unit CFM reduced by 300 with standard motor (142 l/s)
84,100
(24.6)
85,800
(25.1)
—
—
—
—
Std MTR - Modulating 2-way, 150 PSI (1034.3 kPa) maximum operating
pressure.
Not applicable to units with EC fans.
Unit CFM reduced by 300 with standard motor (142 l/s)
133,700 (39.2)
—
—
—
—
8 (0.50)
—
—
—
—
1.6 (11.0)
—
—
—
—
11
Liebert® CW™
Capacity and Physical Data
Table 7
Physical data—Liebert CW106 - CW400, 50 & 60Hz models (continued)
Model Sizes
106
114
146
181
300
400
22.1 (10)
22.1 (10)
—
—
9.6
9.6
—
—
HUMIDIFIER SECTION
Infrared Humidifier Note (50Hz Models are 22.1 lb/h (10.0 kg/h); 9.6 kW)
Capacity, lb/hr (kg/h)
kW
22.1 (10)
9.6
9.6
Steam Generating Humidifier (Water Conductivity between 200-500 micromhos is required for ideal operation) - Not
applicable to units with EC fans.
Capacity, lb/hr (kg/h)
kW
22 (10.0)
22 (10.0)
—
—
—
—
9.6
9.6
—
—
—
—
FILTER SECTION
Disposable Type - Nominal Size and Quantities, MERV8 and MERV11 (option)
Downflow Models
Nominal Size, in
Quanity
18 x 24
18 x 24
18 x 24
21.5 x 24
29.5 x 28.5
29.5 x 28.5
4
4
6
10
12
12
24 x 24
24 x 24
N/A
N/A
N/A
N/A
2
2
N/A
N/A
N/A
N/A
18 x 24
18 x 24
N/A
N/A
N/A
N/A
4
4
N/A
N/A
N/A
N/A
Upflow Models (Front Return)
Nominal Size, in
Quanity
Upflow Models (Bottom & Rear Return)
Nominal Size, in
Quanity
CONNECTION SIZES
Chilled Water, OD Copper
Infrared Humidifier, OD Copper
Condensate Drain, FPT
2-1/8"
2-5/8"
3-1/8"
3-1/8"
3-1/8"
(qty 2)
3-1/8"
(qty 2)
1/4"
1/4"
1/4"
1/4"
N/A
N/A
1-1/4"
1-1/4"
1-1/4"
1-1/4"
1-1/4"
1-1/4"
Steam Reheat, MPT
3/4"
3/4"
N/A
N/A
N/A
N/A
Hot Water Reheat, OD Copper
7/8"
7/8"
N/A
N/A
N/A
N/A
Steam Humidifier, MPT
1/2"
1/2"
N/A
N/A
N/A
N/A
Liebert® CW™
12
Electrical Specifications
3.0
ELECTRICAL SPECIFICATIONS
Table 8
Electrical data, Liebert CW with EC fans, 60Hz
Reheat/Humidifier
FLA
50.3
46.5 24.7 23.0 20.6 22.5 20.3 11.0 9.8 10.6 37.0
35.4 18.6 17.2 13.2 9.2
4.9
4.0
3.2
WSA
62.9
58.1 30.9 28.8 25.8 28.1 25.4 13.8 12.3 13.3 46.3
44.3 23.3 21.5 16.5 11.5 11.5 6.1
5.0
4.0
OPD
70
FLA
64.1
WSA
80.1
OPD
90
CW051
Downflow
CW051
Upflow
CW060
Downflow
CW060
Upflow
CW181
Downflow
CW300 *
Downflow
CW400 *
Downflow
4.0
3.2
74.3 39.5 36.9 32.1 28.1 25.4 13.8 12.3 13.3 63.5
60.4 31.9 29.6 22.9 11.5 11.5 6.1
15
45
70
45
70
20
35
20
30
15
25
5.0
4.0
20
20
15
15
15
9.2
59.4 31.6 29.5 25.7 22.5 20.3 11.0 9.8 10.6 50.8
48.3 25.5 23.7 18.3 9.2
4.9
4.0
3.2
60.4 31.9 29.6 22.9 11.5 11.5 6.1
5.0
4.0
OPD
90
15
15
15
FLA
98.7
—
80
40
40
35
30
30
15
15
15
70
70
35
30
25
20
20
91.3 47.4 45.3
—
43.2 38.8 20.0 19.1
—
72.1
69.1 35.2 32.4
—
16.6 16.6 7.8
6.2
WSA 123.4 114.1 59.3 56.6
—
54.0 48.5 25.0 23.9
—
90.1
86.4 44.0 40.5
—
18.7 18.7 8.8
7.0
—
OPD
—
—
100
15
15
—
70.9 37.2 34.2 26.5 18.4 18.4 9.8
8.0
6.4
88.6 46.5 42.8 33.1 20.7 20.7 11.0 9.0
7.2
FLA
125
125
60
60
60
45
30
25
100.5 93.1 49.4 47.1 40.0 45.0 40.6 22.0 20.9 19.9 73.9
WSA 125.6 116.4 61.8 58.9 50.0 56.3 50.8 27.5 26.1 24.9 92.4
OPD
100
15
15
15
82.1 42.1 38.9
—
16.6 16.6 7.8
6.2
—
WSA 140.8 130.4 67.9 64.8
—
54.0 48.5 25.0 23.9
—
107.5 102.6 52.6 48.6
—
18.7 18.7 8.8
7.0
—
OPD
—
15
15
—
83.9 44.1 40.7 31.5 18.4 18.4 9.8
8.0
6.4
WSA 143.0 132.6 70.4 67.0 56.3 56.3 50.8 27.5 26.1 24.9 109.8 104.9 55.1 50.9 39.4 20.7 20.7 11.0 9.0
7.2
OPD
50
60
50
45
25
30
30
25
—
110
114.4 106.1 56.3 53.6 45.0 45.0 40.6 22.0 20.9 19.9 87.8
150
150
80
70
60
50
50
25
30
25
110
90
110
60
50
—
25
25
15
6.4
WSA 155.1 149.0 78.9 73.4 60.1 56.3 50.8 27.5 24.5 22.5 121.9 121.3 63.6 58.9 45.6 20.7 20.7 11.0 9.0
7.2
80
70
50
50
25
20
25
125
15
15
97.0 50.9 47.1 36.5 18.4 18.4 9.8
8.0
6.4
WSA 155.1 149.0 78.9 73.4 60.1 56.3 50.8 27.5 24.5 22.5 121.9 121.3 63.6 58.9 45.6 20.7 20.7 11.0 9.0
7.2
OPD
175
150
80
FLA
—
—
—
WSA
—
—
—
OPD
—
—
—
80
50
50
25
58.7 48.1
—
—
—
73.4 60.1
—
—
—
—
—
—
80
70
70
20
125
125
70
19.6 18.0
—
—
—
24.5 22.5
—
—
—
—
—
—
20
25
70
25
60
60
50
25
25
25
15
15
15
47.1 36.5
—
—
—
8.0
6.4
58.9 45.6
—
—
—
9.0
7.2
—
—
—
15
15
60
50
25
25
15
124.1 119.2 63.1 58.7 48.1 45.0 40.6 22.0 19.6 18.0 97.5
125
25
25
8.0
80
40
25
97.0 50.9 47.1 36.5 18.4 18.4 9.8
150
60
35
15
175
60
45
15
124.1 119.2 63.1 58.7 48.1 45.0 40.6 22.0 19.6 18.0 97.5
110
50
20
86.0
70
60
20
—
70
60
—
25
150
70
45
43.2 38.8 20.0 19.1
150
125
45
—
FLA
150
90
112.6 104.3 54.3 51.8
FLA
50
133.3 128.4 68.0 62.7 51.3 54.2 49.8 26.9 23.6 21.2 106.7 106.2 55.8 51.1 39.7 27.6 27.6 14.7 12.0 9.6
WSA 166.6 160.5 85.0 78.4 64.1 67.8 62.3 33.6 29.5 26.5 133.4 132.8 69.8 63.9 49.6 29.9 29.9 15.9 13.0 10.4
FLA
CW146
Downflow
4.9
15
15
74.3 39.5 36.9 32.1 28.1 25.4 13.8 12.3 13.3 63.5
OPD
CW114
9.2
15
15
64.1
FLA
CW106
48.3 25.5 23.7 18.3 9.2
30
15
80.1
FLA
CW089
Downflow
15
59.4 31.6 29.5 25.7 22.5 20.3 11.0 9.8 10.6 50.8
30
30
FLA
OPD
CW084
15
35
30
9.2
15
40
30
380 460 575 208 230 380 460 575
20
40
30
230
20
80
35
208
WSA
FLA
CW076
60
380 460 575 208 230 380 460 575
No Reheat/No Humidifier
CW026
CW041
230
Reheat/No Humidifier
Volts
CW038
208
No Reheat/Humidifier
Models
175
175
90
80
70
70
70
35
30
30
150
150
70
70
50
35
35
20
15
15
133.3 128.4 68.0 62.7 51.3 54.2 49.8 26.9 23.6 21.2 106.7 106.2 55.8 51.1 39.7 27.6 27.6 14.7 12.0 9.6
WSA 166.6 160.5 85.0 78.4 64.1 67.8 62.3 33.6 29.5 26.5 133.4 132.8 69.8 63.9 49.6 29.9 29.9 15.9 13.0 10.4
OPD
175
175
90
70
70
35
150
150
70
35
35
20
FLA
—
—
—
61.8 50.7
80
—
—
—
22.7 20.6
—
—
—
50.2 39.1
—
—
—
11.1 9.0
WSA
—
—
—
77.3 63.4
—
—
—
28.4 25.8
—
—
—
62.8 48.9
—
—
—
12.0 9.8
OPD
—
—
—
—
—
—
—
—
—
—
—
—
FLA
—
—
—
66.3 54.3
—
—
—
27.2 24.2
—
—
—
54.7 42.7
—
—
—
15.6 12.6
WSA
—
—
—
82.9 67.9
—
—
—
34.0 30.3
—
—
—
68.4 53.4
—
—
—
16.9 13.7
OPD
—
—
—
90
70
—
—
—
35
35
—
—
—
70
60
—
—
—
20
15
FLA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WSA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OPD
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
FLA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
80
70
70
30
30
30
30
70
70
50
50
15
15
15
15
WSA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OPD
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Contact your Emerson representative for electrical data.
13
Liebert® CW™
Electrical Specifications
Table 9
Electrical data—Centrifugal fans, 60Hz systems
Chilled Water Models - 60Hz
Reheat Options
Electric
None
Electric
None
Humidifier Options
Infrared or Steam
Generating
Infrared or Steam
Generating
Steam or None
Steam or None
Models / Motor
HP
CW026
CW026
2.0 HP
Volts
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
575
FLA
48.6
44.1
22.4
20.1
20.8
17.9
9.2
10.1
35.3
33.0
16.6
12.7
7.5
6.8
3.4
2.7
WSA
60.8
55.1
28.0
25.1
26.0
22.4
11.5
12.6
44.1
41.3
20.8
15.9
9.4
8.5
4.3
3.4
MFCB
60
50
25
30
30
25
15
15
40
40
20
15
15
15
15
15
51.7
46.9
23.8
21.3
23.9
20.7
10.6
11.3
38.4
35.8
18.0
13.9
10.6
9.6
4.8
3.9
64.6
58.6
29.8
26.6
29.9
25.9
13.3
14.1
48.0
44.8
22.5
17.4
13.3
12.0
6.0
4.9
FLA
3.0 HP WSA
MFCB
CW038
CW038
CW041
CW041
CW051
60
50
25
30
35
30
15
15
50
45
20
15
20
20
15
15
FLA
65.5
59.8
30.3
26.4
23.9
20.7
10.6
11.3
52.2
48.7
24.5
19.0
10.6
9.6
4.8
3.9
WSA
81.9
74.8
37.9
33.0
29.9
25.9
13.3
14.1
65.3
60.9
30.6
23.8
13.3
12.0
6.0
4.9
MFCB
90
80
40
35
35
30
15
15
60
70
35
20
20
20
15
15
71.6
65.4
33.1
28.6
30.0
26.3
13.4
13.5
58.3
54.3
27.3
21.2
16.7
15.2
7.6
6.1
5.0 HP WSA 89.5
MFCB 90
81.8
41.4
35.8
37.5
32.9
16.8
16.9
72.9
67.9
34.1
26.5
20.9
19.0
9.5
7.6
80
40
35
50
45
20
20
70
70
35
25
35
30
15
15
FLA
65.5
59.8
30.3
26.4
23.9
20.7
10.6
11.3
52.2
48.7
24.5
19.0
10.6
9.6
4.8
3.9
WSA
81.9
74.8
37.9
33.0
29.9
25.9
13.3
14.1
65.3
60.9
30.6
23.8
13.3
12.0
6.0
4.9
3.0 HP
FLA
3.0 HP
MFCB
90
80
40
35
35
30
15
15
60
70
35
20
20
20
15
15
71.6
65.4
33.1
28.6
30.0
26.3
13.4
13.5
58.3
54.3
27.3
21.2
16.7
15.2
7.6
6.1
5.0 HP WSA 89.5
MFCB 90
81.8
41.4
35.8
37.5
32.9
16.8
16.9
72.9
67.9
34.1
26.5
20.9
19.0
9.5
7.6
80
40
35
50
45
20
20
70
70
35
25
35
30
15
15
FLA
98.8
89.9
46.7
39.7
43.3
37.4
20.5
19.6
72.2
67.7
33.8
26.2
16.7
15.2
7.6
6.1
WSA
123.5 112.4 58.4
FLA
5.0 HP
49.6
54.1
46.8
25.6
24.5
90.3
84.6
42.3
32.8
20.9
19.0
9.5
7.6
60
50
60
50
30
25
90
80
40
30
35
30
15
15
50.1
42.6
50.8
44.2
23.9
22.5
79.7
74.5
37.2
29.1
24.2
22.0
11.0
9.0
132.9 120.9 62.6
53.3
63.5
55.3
29.9
28.1
99.6
93.1
46.5
36.4
30.3
27.5
13.8
11.3
MFCB 125
FLA
7.5 HP WSA
106.3 96.7
MFCB 125
CW060
5.0 HP
50
80
70
35
30
100
100
50
40
50
45
20
20
FLA
112.7 102.9 53.2
44.7
43.3
37.4
20.5
19.6
86.1
80.7
40.3
31.2
16.7
15.2
7.6
6.1
WSA
140.9 128.6 66.5
55.9
54.1
46.8
25.6
24.5 107.6 100.9 50.4
39.0
20.9
19.0
9.5
7.6
60
60
50
30
25
110
110
50
40
35
30
15
15
120.2 109.7 56.6
47.6
50.8
44.2
23.9
22.5
93.6
87.5
43.7
34.1
24.2
22.0
11.0
9.0
150.3 137.1 70.8
59.5
63.5
55.3
29.9
28.1 117.0 109.4 54.6
42.6
30.3
27.5
13.8
11.3
60
80
70
35
45
50
45
20
20
MFCB 150
FLA
7.5 HP WSA
MFCB 150
CW076
CW076
CW084
CW084
CW106
CW106
7.5 HP
10.0 HP
7.5 HP
10.0 HP
10.0 HP
15.0 HP
Liebert® CW™
110
110
125
125
60
70
80
30
110
110
50
FLA
129.9 122.8 61.7
50.7
50.8
44.2
22.6
20.6 103.3 100.6 50.1
39.1
24.2
22.0
11.0
9.0
WSA
162.4 153.5 77.1
63.4
63.5
55.3
28.3
25.8 129.1 125.8 62.6
48.9
30.3
27.5
13.8
11.3
MFCB 175
60
80
70
35
50
50
45
20
20
FLA
136.5 128.8 64.7
52.7
57.4
50.2
25.6
22.6 109.9 106.6 53.1
41.1
30.8
28.0
14.0
11.0
WSA
170.6 161.0 80.9
65.9
71.8
62.8
32.0
28.3 137.4 133.3 66.4
51.4
38.5
35.0
17.5
13.8
60
90
80
40
50
60
60
30
20
MFCB 175
150
150
80
80
30
35
125
125
125
125
60
70
FLA
129.9 122.8 61.7
50.7
50.8
44.2
22.6
20.6 103.3 100.6 50.1
39.1
24.2
22.0
11.0
9.0
WSA
162.4 153.5 77.1
63.4
63.5
55.3
28.3
25.8 129.1 125.8 62.6
48.9
30.3
27.5
13.8
11.3
60
80
70
35
50
50
45
20
20
MFCB 175
150
80
30
125
125
60
FLA
136.5 128.8 64.7
52.7
57.4
50.2
25.6
22.6 109.9 106.6 53.1
41.1
30.8
28.0
14.0
11.0
WSA
170.6 161.0 80.9
65.9
71.8
62.8
32.0
28.3 137.4 133.3 66.4
51.4
38.5
35.0
17.5
13.8
60
90
80
40
50
60
60
30
20
MFCB 175
150
80
35
125
125
70
FLA
136.5 128.8 64.7
52.7
57.4
50.2
25.6
22.6 109.9 106.6 53.1
41.1
30.8
28.0
14.0
11.0
WSA
170.6 161.0 80.9
65.9
71.8
62.8
32.0
28.3 137.4 133.3 66.4
51.4
38.5
35.0
17.5
13.8
60
90
80
40
50
60
60
30
20
MFCB 175
150
80
35
125
125
70
FLA
151.9 142.8 71.7
58.7
72.8
64.2
32.6
28.6 125.3 120.6 60.1
47.1
46.2
42.0
21.0
17.0
WSA
189.9 178.5 89.6
73.4
91.0
80.3
40.8
35.8 156.6 150.8 75.1
58.9
57.8
52.5
26.3
21.3
70
125
110
50
60
100
90
45
35
MFCB 200
175
90
14
45
175
150
80
Electrical Specifications
Table 9
Electrical data—Centrifugal fans, 60Hz systems (continued)
Chilled Water Models - 60Hz
Reheat Options
Electric
None
Electric
None
Humidifier Options
Infrared or Steam
Generating
Infrared or Steam
Generating
Steam or None
Steam or None
Models / Motor
HP
CW106
Volts
FLA
20.0 HP WSA
208
460
575
208
230
460
575
460
575
208
230
460
575
165.1 154.8 77.7
63.7
86.0
76.2
38.6
33.6 138.5 132.6 66.1
52.1
59.4
54.0
27.0
22.0
206.4 193.5 97.1
79.6 107.5 95.3
48.3
42.0 173.1 165.8 82.6
65.1
74.3
67.5
33.8
27.5
70
125
110
60
45
(Upflow only) MFCB 225
CW114
CW114
CW114
200
110
90
150
125
70
60
208
200
230
200
90
FLA
136.5 128.8 64.7
52.7
57.4
50.2
25.6
22.6 109.9 106.6 53.1
41.1
30.8
28.0
14.0
11.0
WSA
170.6 161.0 80.9
65.9
71.8
62.8
32.0
28.3 137.4 133.3 66.4
51.4
38.5
35.0
17.5
13.8
60
90
80
40
50
60
60
30
20
151.9 142.8 71.7
58.7
72.8
64.2
32.6
28.6 125.3 120.6 60.1
47.1
46.2
42.0
21.0
17.0
15.0 HP WSA 189.9 178.5 89.6
MFCB 200 175
90
73.4
91.0
80.3
40.8
35.8 156.6 150.8 75.1
58.9
57.8
52.5
26.3
21.3
10.0 HP
MFCB 175
FLA
FLA
20.0 HP WSA
150
80
35
125
110
50
60
100
90
45
35
86.0
76.2
38.6
33.6 138.5 132.6 66.1
52.1
59.4
54.0
27.0
22.0
206.4 193.5 97.1
79.6 107.5 95.3
48.3
42.0 173.1 165.8 82.6
65.1
74.3
67.5
33.8
27.5
70
125
110
60
45
90
150
125
70
60
200
150
70
70
110
175
125
63.7
200
45
125
165.1 154.8 77.7
(Upflow only) MFCB 225
Table 10
230
200
80
90
Indoor evaporator fan motor electrical requirements—60Hz systems
208
230
460
575
Hp
FLA
LRA
FLA
LRA
FLA
LRA
FLA
LRA
2.0
7.5
46.9
6.8
40.8
3.4
20.4
2.7
16.2
3.0
10.6
66.0
9.6
58.0
4.8
26.8
3.9
23.4
5.0
16.7
105.0
15.2
91.0
7.6
45.6
6.1
36.6
7.5
24.2
152.0
22.0
132.0
11.0
66.0
9.0
54.0
10.0
30.8
193.0
28.0
168.0
14.0
84.0
11.0
66.0
15.0
46.2
290.0
42.0
252.0
21.0
126.0
17.0
102.0
20.0
59.4
321.0
54.0
290.0
27.0
145.0
22.0
116.0
1. Refer to General Data Section for standard fan motor size on units.
2. FLA = FulL Load Amps (does not reflect typical operating amps)
WSA = Wire Sizing Amps (Minimum supply circuit ampacity)
MFCB = Maximum Fuse or Circuit Breaker Size
3. Amperage requirements are based on the rated max FLA current of each component in the unit. The rated max FLA current of the unit
is not the sum total of all components, but is the total of the components which operate during maximum electrical load conditions.
4. The values in the chart are for power of the unit only.
5. Units are 3 phase, 60 cycle.
6. For units with other variations not listed above, consult your Emerson representative for electrical requirements.
7. SCCR - Short Circuit Current Rating 65,000 rms (less than 480V), 25,000 rms (575V).
15
Liebert® CW™
Electrical Specifications
Table 11
Electrical data—EC fan models, 50Hz
Electric Reheat
Options
Humidifier Options
Models
CW026
CW038
CW041
Electric
Reheat
No Electric
Reheat
Infrared Humidifier
Electric
Reheat
No Electric
Reheat
No
Infrared Humidifier
Volts
400
400
400
400
FLA
25.7
11.3
19.3
4.9
WSA
32.1
14.1
24.1
6.1
OPD
35
15
25
15
FLA
33.0
11.3
26.6
4.9
WSA
41.3
14.1
33.3
6.1
OPD
45
15
35
15
FLA
33.0
11.3
26.6
4.9
WSA
41.3
14.1
33.3
6.1
OPD
45
15
35
15
CW051
Downflow
FLA
49.5
20.6
36.7
7.8
WSA
61.9
25.8
45.9
8.8
OPD
70
30
50
15
CW051
Upflow
FLA
51.5
22.6
38.7
9.8
WSA
64.4
28.3
48.4
11.0
OPD
70
25
50
15
CW060
Downflow
FLA
56.7
20.6
43.9
7.8
WSA
70.9
25.8
54.9
8.8
OPD
80
30
60
15
CW060
Upflow
FLA
58.7
22.6
45.9
9.8
WSA
73.4
28.3
57.4
11.0
OPD
80
25
60
15
FLA
65.9
22.6
53.1
9.8
CW076
WSA
82.4
28.3
66.4
11.0
OPD
90
25
70
15
CW084
FLA
65.9
22.6
53.1
9.8
WSA
82.4
28.3
66.4
11.0
OPD
90
25
70
15
CW089
Downflow
FLA
65.9
22.6
53.1
9.8
WSA
82.4
28.3
66.4
11.0
OPD
90
25
70
15
FLA
70.8
27.5
58.0
14.7
CW106
WSA
88.5
34.4
72.5
15.9
OPD
90
35
80
20
CW114
FLA
70.8
27.5
58.0
14.7
WSA
88.5
34.4
72.5
15.9
OPD
90
35
80
20
CW146
Downflow
FLA
68.7
25.4
55.9
12.6
WSA
85.9
31.8
69.9
13.7
OPD
90
35
70
15
CW181
Downflow
FLA
74.7
31.4
61.9
18.6
WSA
93.4
39.3
77.4
20.2
OPD
100
40
80
25
Liebert® CW™
16
Electrical Specifications
Table 12
Electrical data—Centrifugal fans, 50Hz systems
Reheat Options
Electric
None
Electric
None
Humidifier Options
IR/SGH
IR/SGH
Steam or None
Steam or None
Models
CW026
CW038
CW041
CW051
CW060
CW076
CW084
CW106
CW114
Motor hp Volts
200
230
380-415 200 230 380-415
200
230
380-415 200 230 380-415
2.0
FLA
46.7
43.4
24.3
19.8 17.2
9.9
33.9
32.3
17.9
7.0
6.1
3.5
3.0
FLA
49.8
46.1
25.9
22.9 19.9
11.5
37.0
35.0
19.5
10.1 8.8
5.1
3.0
FLA
62.9
59.0
33.2
22.9 19.9
11.5
50.1
47.9
26.8
10.1 8.8
5.1
5.0
FLA
68.6
63.9
36.0
28.6 24.8
14.3
55.8
52.8
29.6
15.8 13.7
7.9
3.0
FLA
62.9
59.0
33.2
22.9 19.9
11.5
50.1
47.9
26.8
10.1 8.8
5.1
5.0
FLA
68.6
63.9
36.0
28.6 24.8
14.3
55.8
52.8
29.6
15.8 13.7
7.9
5.0
FLA
94.6
88.4
49.6
41.2 35.9
20.7
69.2
66.2
36.8
15.8 13.7
7.9
7.5
FLA
103.9
96.5
54.2
50.5 44.0
25.3
78.5
74.3
41.4
25.1 21.8
12.5
5.0
FLA
107.9 101.4
56.8
41.2 35.9
20.7
82.5
79.2
44.0
15.8 13.7
7.9
7.5
FLA
117.2 109.5
61.4
50.5 44.0
25.3
91.8
87.3
48.6
25.1 21.8
12.5
7.5
FLA
126.6 122.6
68.6
50.5 44.0
25.3
101.2 100.4
55.8
25.1 21.8
12.5
10.0
FLA
131.7 128.4
71.2
55.6 49.8
27.9
106.3 106.2
58.4
30.2 27.6
15.1
7.5
FLA
126.6 122.6
68.6
50.5 44.0
25.3
101.2 100.4
55.8
25.1 21.8
12.5
10.0
FLA
131.7 128.4
71.2
55.6 49.8
27.9
106.3 106.2
58.4
30.2 27.6
15.1
10.0
FLA
131.7 128.4
71.2
55.6 49.8
27.9
106.3 106.2
58.4
30.2 27.6
15.1
15.0
FLA
147.1 142.4
78.9
71.0 63.8
35.6
121.7 120.2
66.1
45.6 41.6
22.8
20.0
FLA
161.5 152.8
86.1
85.4 74.2
42.8
136.1 130.6
73.3
60.0 52.0
30.0
10.0
FLA
131.7 128.4
71.2
55.6 49.8
27.9
106.3 106.2
58.4
30.2 27.6
15.1
15.0
FLA
147.1 142.4
78.9
71.0 63.8
35.6
121.7 120.2
66.1
45.6 41.6
22.8
20.0
FLA
161.5 152.8
86.1
85.4 74.2
42.8
136.1 130.6
73.3
60.0 52.0
30.0
1. FLA = Full Load Amps (does not reflect typical operating amps)
2. Amperage requirements are based on the rated max FLA current of each component in the unit. The rated max FLA current of the unit is
not the sum total of all components, but is the total of the components which operate during maximum electrical load conditions.
3. The values in the table are for power demand of the unit only.
4. Units are 3-phase, 50-cycle.
5. Consult your Emerson representative for electrical requirements of units with variations not listed above.
6. SCCR—Short Circuit Current Rating 65,000 rms (less than 480V), 25,000 rms (575V)
Table 13
Indoor evaporator fan motor electrical requirements
Hp
Volts
200
230
380-415
2.0
FLA
7.0
6.1
3.5
3.0
FLA
10.1
8.8
5.1
5.0
FLA
15.8
13.7
7.9
7.5
FLA
25.1
21.8
12.5
10.0
FLA
30.2
27.6
15.1
15.0
FLA
46.2
42.0
24.2
20.0
FLA
NA
NA
30.0
1. Refer to General Data Section for standard fan motor size on units.
2. FLA = Full Load Amps
17
Liebert® CW™
Electrical Field Connections
4.0
ELECTRICAL FIELD CONNECTIONS
4.1
Electrical Field Connections—CW026-CW084
Figure 6
Electrical field connections, downflow models CW026D through CW084D only
Field-supplied disconnect switch when factory-installed unit disconnect is not provided.
Select per national and local codes.
Factory-installed unit disconnect switch (optional)
Monitoring Panel
Three-phase connection (50Hz)
Electrical service connection
terminals when factory disconnect
switch is NOT supplied.
Earth ground connection (60HZ).
Connection terminal for field-supplied
earth grounding wire.
Three -phase electric service not by
Liebert.
Three-phase connection.
Electric service connection terminals
when factory disconnect switch is supplied.
Earth ground bar (on 50Hz only)
Connection terminals with factory ground
from each high voltage component for
field-supplied earth grounding wire.
Main fuseblock and fuses not present
when fused disconnect installed
or on 50Hz units.
2 3
Three-Phase Connection (60Hz)
Electric service connection point when
factory disconnect is NOT supplied.
Factory-installed disconnect
switch (optional ). May be fused
disconnect with internal fuses.
Liebert IntelliSlot Housings
optional Monitoring and Communication
cards inserted here.
Special alarm connections. Field-supplied
24V. Class 2 wire for special alarms.
Three-phase electric service not
by Liebert.
Unit to Unit Communication Connections
C and D ports, CAT5E Ethernet connections.
Electric conduit knockouts on bottom of
electric box. Knockouts sizes 1-3/8"
(35mm) or 1-3/4" (45mm) or 2-1/2"(64mm).
C
D
Electrical handy box factoryinstalled with cover.
Common alarm connection
Field-supplied 24V. Class 2 wiring to
common alarm pigtails 75 + 76
which are factory-connected to
common alarm relay (R3).
Remote unit shutdown
Replace existing jumper between
Terminals 37 + 38 with normally
closed switch having a minimum 50VA
rating. Use field-supplied 24V Class 2 wire.
Three phase connection.
Electric service connection
terminals when factory-fused
disconnect switch is supplied.
Fused Disconnect View
Smoke detector alarm connections. Field-supplied 24V. Class 2 wire to remote alarm circuits.
Factory-wired terminals from optional smoke detector are #91-comm., #92-NO, and #93-NC.
Note: Refer to specification sheet for full load amp and wire size amp ratings.
Liebert® CW™
18
DPN001670
Rev. 2
Electrical Field Connections
Figure 7
Low-voltage electrical field connections, upflow models CW026U through CW084U
Field-supplied disconnect switch when factory-installed unit disconnect is not provided.
Select pernational and local codes.
Factory-installed unit disconnect switch (optional).
Monitoring Panel
Three-phase connection (50Hz)
Electrical service connection
terminals when factory disconnect
switch is NOT supplied.
Earth ground connection (60Hz)
Connection terminal for field-supplied
earth grounding wire.
Three-phase electric
service not by
Emerson.
Main fuseblock and fuses not present when
fused disconnect installed or on 50Hz units.
2 3
Earth ground bar (on 50Hz only)
Connection terminals with factory ground
from each high voltage component for
field-supplied earth grounding wire.
Three-phase connection. Electric
service connection terminals when
factory disconnect switch is supplied.
Three-phase connection (60Hz)
Electric service connection terminals
when factory disconnect switch
is NOT supplied.
Factory-installed disconnect
switch (optional ). May be fused
disconnect with internal fuses.
Three-phase electric service not
by Emerson.
Electric conduit knockouts on bottom of
electric box. Knockouts sizes 1-3/8"
(35mm) or 1-3/4" (45mm) or 2-1/2"(64mm).
Three-phase connection.
Electric service connection
terminals when factory-fused
disconnect switch is supplied.
Note: Refer to specification sheet for full amp and wire size amp ratings.
DPN001672
Rev. 1
19
Fused Disconnect View
Liebert® CW™
Electrical Field Connections
4.2
Electrical Field Connections—Upflow Models
Figure 8
Low-voltage electrical field connections, upflow models except CW106U and CW114U
Unit to Unit Communication
Connections.
C & D ports, CAT5E Ethernet connections.
Underside of Unit Top
Liebert IntelliSlot Housings.
Optional Monitoring and
Communication cards inserted here.
Back of Unit
37
38
24
50
Factory Wiring
91
92
93
57
55
56
Remote unit shutdown
Replace existing jumper between
Terminals 37 and 38 with normally
closed switch having a minimum
50VA rating. Use field-supplied 24V
Class 2 wire.
Smoke detector alarm connections
Field-supplied 24V. Class 2 wire to
remote alarm circuits. Factory-wired
terminals from optional smoke detector
are #91-comm., #92-NO, and #93-NC.
Special alarm connections
Field-supplied 24V, Class 2
wire for special alarms.
Back of Electric Box
DPN001673
Rev. 1
Note: Refer to specification sheet for full
load amp and wire size amp ratings.
Liebert® CW™
20
Electrical Field Connections
Figure 9
Low-voltage electrical field connections, upflow models CW106U and CW114U
Monitoring panel
Disconnect Switch
Knockout for low voltage
wiring connections in
top frame member.
Knockout size 7/8" (22mm)
Remote unit shutdown
Replace existing jumper between
Terminals 37 and 38 with normal
closed switch having a minimum
50VA rating. Use field-supplied
24V Class 1 wire.
Special alarm connections
Field-supplied 24V. Class 1 wire
for special alarms.
Common alarm connection
Field-supplied 24V. Class 1 wiring to
common alarm pigtails 75 and 76,
which are factory-connected to
common alarm relay (R3).
Liebert IntelliSlot Housings
Optional Monitoring and
Communication cards inserted here.
C
Smoke dectector alarm connections
Field-supplied 24V, Class 1 wire to
remote alarm circuits. Factory-wired
terminals from optional smoke detector
are #91-comm., #92-NO, and #93-NC.
Unit to Unit Communication
Connections
C & D ports, CAT5E Ethernet
connections
21
Note: Refer to specification sheet
for full load amp and wire size
amp ratings.
D
DPN001675
Rev. 2
Liebert® CW™
Electrical Field Connections
4.3
Electrical Field Connections—Downflow Models
Figure 10 Electrical field connections downflow models CW089D, CW106D and CW114D
Monitoring Panel
Field-supplied disconnect switch when factoryinstalled unit disconnect is not provided.
Select per national and local codes.
Three-phase electric service
not by Emerson
Factory-installed unit disconnect
switch (optional).
Three-phase connection (50Hz).
Electric service connection
terminals when factory disconnect
switch is NOT supplied.
Three-phase connection.
Electric service connection
terminals when factory
disconnect switch is supplied.
Disconnect switch (optional). Factory installed.
Main fuseblock and fuses not present when fused
disconnect installed or on 50Hz units.
Earth ground connection (60 HZ).
Connection terminal for field-supplied
earth grounding wire.
Common alarm connection. Field-supplied 24V, Class
1 wiring to common alarm terminals 75 + 76 which are
factory connected to common alarm relay (R3).
Three-phase connection (60Hz).
Electric service connection
terminals when factory disconnect
switch is NOT supplied.
May be fused
disconnect with
internal fuses.
Earth ground bar (optional).
Connection terminals with factory
ground from each high voltage
component for field-supplied
earth grounding wire.
Liebert IntelliSlot
Housings
Optional Monitoring and
communication cards
inserted here.
Three-phase electric service
Not provided by Emerson.
C
Three-phase connection
Electric service connection
terminals when factory fused
disconnect switch is supplied.
Fuse Disconnect View
Electric conduit knockouts
Bottom of electric box.
Knockout sizes 1 3/8"(35mm)
or 1 3/4" (45mm) or 2 1/2" (64mm).
Refer to specification sheet for full load amp and wire size amp ratings.
Liebert® CW™
22
Smoke detector alarm connections
Field-supplied 24V, Class 1 wire to remote
alarm circuits. Factory wired terminals from
optional smoke detector are #91-comm.,
#92-NO and #93-NC.
Customer alarm connections
Field-supplied 24V, Class 1 wire for customer
alarm Terminals 24, 50, 51, 55, 56.
Remote unit shutdown
Replace existing jumper between
tTswitch having a minimum 50VA rating.
Use field-supplied, 24V Class 1 wire.
D
Unit to Unit
Communication Connections.
C & D ports, CAT5E Ethernet.
Temperature and
Humidity Sensor
Liebert IntelliSlot Power
Supply Bloard
DPN001671
Rev. 4
Electrical Field Connections
4.4
Electrical Field Connections, High-Voltage—Upflow Models
Figure 11
High-voltage electrical field connections upflow models CW089U, CW106U and CW114U
Three-phase electric
service not by Emerson
Field-supplied disconnect switch when factory-installed unit disconnect is not
provided. Select per national and local codes.
Factory-installed unit disconnect switch (optional).
Monitoring Panel
Electrical conduit knockouts
in top of electrical box.
Knockout sizes 1-3/8" (35mm),
1-3/4" (45mm) or 2-1/2" (64mm)
Three-phase electric
service not by Emerson
Three-phase connection (50Hz).
Electrical service connection
terminals when factory disconnect
switch is NOT supplied.
2 3
Earth ground connection (60HZ).
Connection terminal for field-supplied
earth grounding wire.
Three-phase connection. Electric
service connection terminals when
factory disconnect switch is supplied.
Earth ground bar (on 50Hz only).
Connection terminals with factory ground
from each high voltage component for
field-supplied earth grounding wire.
Main fuseblock and fuses not present when
fused disconnect installed or on 50Hz units.
Factory-installed disconnect
switch (optional ). May be fused
disconnect with internal fuses
Three-phase connection (60Hz).
Electric service connection terminals when
factory disconnect switch is NOT supplied.
Note: Refer to specification sheet for full load
amp and wire size amp ratings.
DPN001674
Rev. 1
Three phase connection.
Electric service connection
terminals when factory fused
disconnect switch is supplied.
Fused Disconnect View
23
Liebert® CW™
Electrical Field Connections
4.5
Electrical Field Connections—Downflow Models CW146 and CW181 with EC Fans
Figure 12 Electrical field connections, downflow models CW146 and CW181 with EC fans
Fan Transformer Fuses
(B) Voltage Only
Main Fan
Fuses
Control Fuses
Cover Plate /
Reversing Starter
Location
Power
Block
4
Ground
Lug
Humidifier
Fuses
Condensate
Pump Fuses
T6 Transformer
Reheat
Fuses
Liebert IntelliSlot
Power Supply
Filter Clog
Switch
Liebert
IntelliSlot
Housing
EM1 Relay
High
Temp
Strat
10
Large Liebert
iCOM
I/O Board
Power Block
T1 Transformer
Humidifier
Contactor
8
A
B
Disconnect
C
R3 Relay
Backup
Reheat
Contactor
Reheat
Contactors
Ground
Current
Detector
Main Fuses
3
1
CPAR Relay
4
Liebert
iCOM
Smoke Detector
Fuse Board
Power Supply
Remote Humidifier
Relay
Liebert Liqui-tect
Shutdown Relay
50Hz
Field High-Voltage
Entrance
Terminals for
Field Low-Voltage
Wiring Connections
D
Main Fan
Contactor
2
Note: Typical orientation of components shown. Component location varies by option and unit.
15
12
11
19
A
106 107 110 111 91 92 93 80 81 82 83
B
C
5
16
13
24 50 51 55 56 11 12
7
58 59 84 85 94 95 96 97 75 76
14
6
17
18
88 89 37C3 8C37B 38B 37 38
D
DPN001699
Pg. 3, Rev. 4
See 4.6 - Standard Electrical Connections, 4.7 - Optional
Electrical Connections and 4.7.1 - Optional Low-Voltage
Terminal Package Connections
Figure 13 Electrical field connections, downflow model CW146 and CW181 with EC fans, dual-fused
disconnect switches
Fan Transformer Fuses
(B) Voltage Only
Cover Plate /
Reversing Starter
Location
Condensate
Pump Fuses
Power
Block
Humidifier
Fuses
Control
Fuses
Main Fan
Fuses
T6 Transformer
Filter Clog
Switch
EM1 Relay
Reheat
Fuses
Ground
Lug
10
High
Temp
Stat
Ground
Lug
Fused
Disconnect
R3 Relay
Reheat
Contactors
Fused
Disconnect
Field High Voltage
Entrance
Backup
Reheat
Contactor
Main Fan
Contactor
CPAR Relay
Ground
Current
Detector
Remote
Humidifier Relay
Liebert
Liqui-tect Shutdown
Relay
9
See 4.6 - Standard Electrical Connections, 4.7 - Optional
Electrical Connections and 4.7.1 - Optional Low-Voltage
Terminal Package Connections
Liebert® CW™
24
Liebert
IntelliSlot
Housings
Large Liebert
ICOM
I/O Board
Power Block
T1 Transformer
Humidifier
Contactor
Liebert IntelliSlot
Power Supply
Terminals for
Field Low Voltage
Wiring Connections
Liebert ICOM
Smoke
Fuse Board
Detector
Power Supply
DPN001699
Pg. 4, Rev. 4
Electrical Field Connections
4.6
Standard Electrical Connections
1. Primary high-voltage entrance—2.5" (64mm); 1.75" (44mm); 1.375" (35mm) diameter
concentric knockouts located in bottom of box
2. Primary low-voltage entrance—Quantity (3) 1.125" (28mm) diameter knockouts located in
bottom of box
3. Three-phase electrical service—Terminals are on main fuse block (disregard if unit has
optional disconnect switch). Three-phase service not by Liebert.
4. Earth ground—Terminal for field-supplied earth grounding wire.
5. Remote unit shutdown—Replace existing jumper between Terminals 37 & 38 with field
supplied normally closed switch having a minimum 75VA, 24VAC rating. Use field-supplied
Class 1 wiring.
6. Customer alarm inputs—Terminals for field-supplied, normally open contacts, having a
minimum 75VA, 24VAC rating, between Terminals 24 & 50, 51, 55, 56. Use field-supplied Class 1
wiring. Terminal availability varies by unit options.
7. Common alarm—On any alarm, normally open dry contact is closed across Terminals 75 & 76
for remote indication. 1 amp, 24VAC maximum load. Use field-supplied Class 1 wiring.
4.7
Optional Electrical Connections
8. Unit factory-installed disconnect switch, Fuse Block and Main Fuses—Two types of
disconnect switches are available: Locking and Non-Locking. The non-locking type 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 type is identical, except that access to the high-voltage electric
panel compartment can be obtained only with the switch in the Off position.
The molded case switch disconnect models contain separate main fuses. Units with fused
disconnect have main fuses within the disconnect.
9. Secondary disconnect switch and earth ground—Fuses are included in the 65KAIC SCCR
fused disconnect switch models.
10. Three-phase electrical service—Terminals are on top of disconnect switch. Three-phase
service not by Emerson.
11. Smoke sensor alarm—Factory-wired dry contacts from smoke sensor are 91-common, 92-NO,
and 93-NC. Supervised contacts, 80 & 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.
12. Reheat and humidifier lockout—Remote 24VAC required at Terminals 82 & 83 for lockout of
reheat and humidifier.
13. Condensate alarm (with condensate pump option)—On pump high water indication,
normally open dry contact is closed across Terminals 88 & 89 for remote indication. 1A, 24VAC
maximum load. Use field-supplied Class 1 wiring.
14. Remote humidifier—On any call for humidification, normally open dry contact is closed across
Terminals 11 & 12 to signal field-supplied remote humidifier. 1A, 24VAC maximum load. Use
field-supplied Class 1 wiring.
15. Reversing Starter Power Supply Notification—Normally open contact Terminals 106 and
107 will close when Power Supply 1 is engaged; 110 and 111 will close when Power Supply 2 is
engaged.
25
Liebert® CW™
Electrical Field Connections
4.7.1
Optional Low-Voltage Terminal Package Connections
16. Remote unit shutdown—Two additional contact pairs available for unit shutdown (labeled as
37B & 38B, 37C & 38C). Replace jumpers with field-supplied normally closed switch having a
minimum 75VA, 24VAC rating. Use field-supplied Class 1 wiring.
17. Common alarm—On any alarm, two additional normally open dry contacts are closed across
Terminals 94 & 95 and 96 & 97 for remote indication. 1A, 24VAC maximum load. Use
field-supplied Class 1 wiring.
18. Main fan auxiliary switch—On closure of main fan contactor, normally open dry contact is
closed across Terminals 84 & 85 for remote indication. 1A, 24VAC max load. Use field-supplied
Class 1 wiring.
19. Liebert Liqui-tect® shutdown and dry contact - On Liebert Liqui-tect activation, normally
open dry contact is closed across Terminals 58 & 59 for remote indication (Liebert Liqui-tect
sensor ordered separately). 1A, 24VAC max load. Use field-supplied Class 1 wiring.
Important Note About Input Power Supplies
The electronically commutated (EC) motors included in the CW181 unit are suitable for connection to
power supplies with 300V or less line-to-ground potential only.
Acceptable Power Supplies for 380V and 480V Nominal Units
• 380v wye with solidly grounded neutral and 220V line to ground
• 480v wye with solidly grounded neutral and 277V line to ground
Acceptable Power Supplies for 575V Nominal Units
• 575V wye with solidly grounded neutral and 332V line to ground (A step-down transformer is
provided in the Liebert unit to convert 575V input to 480V output to operate the 480V EC
motors.)
Unacceptable Power Supplies for 380V, 480V and 575V Nominal Units
•
•
•
•
wye with high resistance (or impedance) ground
delta without ground or with floating ground
delta with corner ground and
delta with grounded center tap
Liebert® CW™
26
Dimensions
5.0
DIMENSIONS
5.1
Location Considerations
For a downflow unit, the unit can sit on an accessible, elevated flooring system. It may be necessary to
furnish additional pedestal support below the unit to ensure maximum structural support. A separate
floor stand for the unit may be used as support, independent of the elevated floor and installed prior
to the flooring system.
For downflow and upflow units, provide approximately 34" (864mm) service clearance on the left,
right and in front of the unit whenever possible. The minimum space required for service is
18" (457mm) on the left end, 18" (457mm) on the right end and 24" (610mm) in front of the unit. This
space is necessary to permit routine maintenance, such as replacing filters and adjusting the fan
speed. On downflow chilled water units and upflow CW106 and CW114 models, left- and right-end
minimum clearances are 0" (0 mm), with the exception of rear return.
Avoid installing units in an alcove or at the extreme end of a room that has a high aspect ratio (long
narrow room). Also avoid installing units too close together. This tends to reduce the effectiveness of
the air distribution as compared to units located 30-40 feet (9-12m) apart.
27
Liebert® CW™
Dimensions
5.2
Cabinet and Floor Planning Dimensions—CW026-CW084, Downflow with EC Fans
Figure 14
Cabinet and floor planning dimensions, CW026-CW084, downflow with EC fans
J
Projection of
Display Bezel
3/4" (19mm)
Overall Di
2" (50.8mm)
Overall A
Dimen
sio
mension
C
D
turn
Air Re g
Openin
Projection of
Display Bezel
3/4" (19mm)
n
2"
B
Air Re
turn O
penin(50.8mm)
g
1"
(25.4mm)
1"
(25.4mm)
72"
(1829mm)
J
Overall
Dimensi
on
C
binet
Unit Ca
F
Plenum
Overall
K
rn
Air Retu
Opening
A
Overall
Dimens
ion
Unit An
d Plenu
m
1"
(25.4mm)
Air Re
B
turn O
pening
2"
(50.8mm)
Pre-Filter
Plenum
9"
(228mm)
72"
(1829mm)
1"
(25.4mm)
Un
E
it B
as
e
Shaded areas indicate
a recommended clearance
of 36" (914mm) for component
access and filter removal.
F ase
B
it
Un
Unit Dimensions
1"
(25.4mm)
F
9"
(228mm)
3"
(76.2mm)
G
Models With Pre-Filters
F
9"
Reheat Or Humidifier
(228mm)
Piping Opening
1"
(Optional Steam &
(25.4mm)
Hot Water Only)
1" (25.4mm)
H
Air Discharge
Opening
L
Air Discharge
Opening
20"
(508mm)
M
1"
(25.4mm)
20"
(508mm)
1"
(25.4mm)
Standard Piping
& Electrical Opening
E
Standard Piping
& Electrical Opening
E
Fl
Floor Cutout Dimensions
Forward Curved
(FC) Fan Units
oo
31"
Fl (787.4mm)
oo
rL
ev
el
18"
(457mm)
rL
ev
Floor Cutout Dimensions
Electronically Commutated
(EC) Fan Units
el
DPN001659
Rev. 1
Net Weight
lb (kg)
Dimensions, inches (mm)
Model
A
B
C
D
E
F
G
H
J
K
L
EC Only
M
EC Only
FC
EC
CW026
50
(1270)
46
(1168)
35
(889)
32
(813)
48
(1219)
33
(883)
8
(203)
37
(940)
35-5/8
(905)
31
(787)
28
(711)
2-7/8
(73)
760
(345)
800
(363)
CW038
50
(1270)
46
(1168)
35
(889)
32
(813)
48
(1219)
33
(883)
8
(203)
37
(940)
35-5/8
(905)
31
(787)
28
(711)
2-7/8
(73)
795
(361)
840
(381)
CW041
50
(1270)
46
(1168)
35
(889)
32
(813)
48
(1219)
33
(883)
8
(203)
37
(940)
35-5/8
(905)
31
(787)
28
(711)
2-7/8
(73)
855
(388)
900
(408)
CW051
74
(1880)
70
(1778)
35
(889)
32
(813)
72
(1829)
33
(883)
8
(203)
61
(1549)
35-5/8
(905)
31
(787)
51-1/4
(1302)
2-7/8
(73)
1090
(494)
1220
(553)
CW060
74
(1880)
70
(1778)
35
(889)
32
(813)
72
(1829)
33
(883)
8
(203)
61
(1549)
35-5/8
(905)
31
(787)
51-1/4
(1302)
2-7/8
(73)
1115
(524)
1250
(567)
CW076
99
(2515)
95
(2413)
35
(889)
32
(813)
97
(2464)
33
(883)
15-1/4
(387)
78-3/4
(2000)
35-5/8
(905)
31
(787)
60-3/4
(1543)
8-7/8
(225)
1320
(599)
1440
(653)
CW084
99
(2515)
95
(2413)
35
(889)
32
(813)
97
(2464)
33
(883)
15-1/4
(387)
78-3/4
(2000)
35-5/8
(905)
31
(787)
60-3/4
(1543)
8-7/8
(225)
1420
(644)
1540
(690)
Source: DPN001659, Rev. 1
Liebert® CW™
28
Dimensions
Figure 15
Cabinet and floor planning dimensions, CW026, CW038 and CW041, downflow with EC fans, front
discharge
46" (1168mm)
Opening
31"
(787mm)
Opening
Customer Piping and Wiring Connections
35"
(889mm)
Return Air
Opening
33"
(838mm)
Standard bottom connections require unit to
be placed on a floor stand at least
9" (229mm) high.
If unit is to be placed directly on the
floor, an additional SFA is required to
relocate customer connections
3/4"
(19mm)
Bezel
TOP VIEW
50" (1270mm)
36"
(914mm)
72"
(1829mm)
36"
(914mm)
16"
(408mm)
29-3/4"
(754mm)
Air Discharge
Opening
FRONT VIEW
3"
(76mm)
Striated area indicates the
recommended minimum
clearance for component
access
310807
Pg. 1, Rev. 0
2"
(51mm)
48" (1219mm)
29
Liebert® CW™
Dimensions
Figure 16
Cabinet and floor planning dimensions, CW051, CW060, CW076 and CW084, downflow with EC
fans, front discharge
C Opening
31"
(787mm)
Opening
35"
(889mm)
33"
(838mm)
Return Air
Opening
3/4"
(19mm)
Bezel
TOP VIEW
36"
(914mm)
B
72"
(1829mm)
16"
(408mm)
F
Air Discharge
Opening
E
Air Discharge
Opening
FRONT VIEW
36"
(914mm)
Striated area indicates the
recommended minimum
clearance for component
access
16"
(408mm)
3-1/8"
(79mm)
G
D
A
310807
Pg. 2, Rev. 0
Customer Piping and Wiring Connections
Standard bottom connections require unit to
be placed on a floor stand at least
9" (229mm) high.
If unit is to be placed directly on the
floor, an additional SFA is required to
relocate customer connections
Dimensions inches (mm)
Model
A
B
C
D
E
F
G
CW051
72 (1829)
74 (1880)
70 (1778)
2.0 (51)
25.0 (636)
25.3 (643)
30.1 (764)
CW060
72 (1829)
74 (1880)
70 (1778)
2.0 (51)
25.0 (636)
25.3 (643)
30.1 (764)
CW076
97 (2464)
99 (2515)
95 (2413)
8.0 (203)
28.6 (727)
28.8 (730)
41.9 (1064)
CW084
97 (2464)
99 (2515)
95 (2413)
8.0 (203)
28.6 (727)
28.8 (730)
41.9 (1064)
Liebert® CW™
30
Dimensions
Figure 17 Cabinet and floor planning dimensions, CW089 - CW114, downflow with EC fans
118" (2997mm)
Opening
35"
33" (889mm)
(838mm)
30-3/4"
(781mm)
Opening
Notes:
Filters are accessible
from front of unit only.
Electrical connections
can be made from the
bottom of unit.
TOP VIEW
3/4"
(19mm)
Bezels
122" (3099mm)
36"
(914mm)
24"
(610mm)
76"
(1930mm)
Striated area indicates the
recommended minimum
clearance to be provided Shaded area indicates the
for component access.
required minimum clearance
below the unit to lower the
fans. Fans may also remain in
DPN001614 unit if desired.
120" (3048mm)
1-1/2"
(38mm)
Rev. 1
FRONT VIEW
31
Liebert® CW™
Dimensions
Figure 18 Cabinet and floor planning dimensions, CW089 - CW114, downflow with EC fans, front and rear
discharge
118" (2997mm)
Opening
30-3/4"
(781mm)
Opening
35"
(889mm)
Return Air
Opening
3/4"
(19mm)
Bezel
33"
(838mm)
TOP VIEW
122" (3099mm)
Filters are accessible only from front of unit.
Customer Piping and Wiring Connections
76"
(1930mm)
15-7/8"
(403mm)
15-7/8"
(403mm)
15-7/8"
(403mm)
29-7/8"
(757mm)
Air Discharge
Opening
30-1/8"
(765mm)
Air Discharge
Opening
FRONT VIEW
35"
(889mm)
28-7/8"
(732mm)
Air Discharge
Opening
1-1/2"
(37mm)
120" (3048mm)
67-7/8"
(1725mm)
Standard bottom connections require unit to
be placed on a floor stand at least
9" (229mm) high.
If unit is to be placed directly on the
floor, an additional SFA is required to
relocate customer connections
3-1/8"
(80mm)
1-3/4"
(45mm)
36"
(914mm)
3-1/8"
(80mm)
1-3/4"
(45mm)
Liebert® CW™
15-7/8"
(403mm)
30-1/8"
(765mm)
Air Discharge
Opening
15-7/8"
(403mm)
29-7/8"
(757mm)
Air Discharge
Opening
15-7/8"
(403mm)
28-7/8"
(732mm)
Air Discharge
Opening
35"
REAR VIEW
(889mm)
67-7/8" (1725mm)
Striated area indicates the
recommended minimum
clearance for component
access
310807
Pg. 3, Rev. 0
32
Dimensions
Figure 19 Cabinet and floor planning dimensions, CW146 and 181, downflow with EC fans, filter plenum
117-11/16"
(2989mm Opening
Filter Plenum is shipped
separately.
Refer to DPN001693 for electrical
and plumbing requirements
42"
(1067mm)
Opening
3/4"
(20mm)
Bezels
45"
(1143mm)
Plenum
18" (457mm)
Filter Plenum
94"
(2388mm)
Total Height
76"
(1930mm)
Base Unit
45"
(1143mm)
47"
(1194mm)
120" (3044mm)
1"
25mm
Typical
122" (3099mm)
Filters are removed
through the front
of the plenum
1-1/2"
(38mm)
Filter Plenum
(shipped separately)
CW146 or CW181
base unit
48"
(1219mm)
Striated area indicates
the recommended
minimum clearance
for component access.
24"
(610mm) DPN001707
Rev. 2
33
Liebert® CW™
Dimensions
Figure 20 Cabinet and floor planning dimensions, CW146 - CW181, downflow with EC fans, front
discharge
15" (381mm)
Piping
Connections
117-3/4" (2989mm)
Opening
9-5/8"
(244mm)
42"
(1067mm)
Opening
Detail A
TOP VIEW
45"
(1143mm)
3/4" (19mm)
Bezel
18" (457mm)
Filter Plenum
94"
(2386mm)
Total Height
76"
(1930mm)
Base Unit
A
29-1/2"
(749mm)
Air Discharge
Opening
3-1/8"
(78mm)
4-5/8" (117mm)
1-1/2"
(38mm)
LEFT END
45" (1143mm)
37" (940mm)
18-7/8"
(478mm)
18-7/8"
(478mm)
27-5/8"
(700mm)
Air Discharge
Opening
30-3/4"
(779mm)
Air Discharge
Opening
36-3/8"
(924mm)
FRONT VIEW
120" (3048mm)
1"
(25mm)
18-7/8"
(478mm)
68-1/4"
(1734mm)
3-1/4"
(83mm)
1-1/2"
(38mm)
122" (3099mm)
Filter Plenum
(shipped separately
Filters are removed
through the front
of the plenum
18-7/8"
(478mm)
3-1/4"
(83mm)
48"
(1219mm)
1-1/2"
(38mm)
18-7/8"
(478mm)
30-3/4"
(779mm)
Air Discharge
Opening
27-5/8"
(700mm)
Air Discharge
Opening
36-3/8"
(924mm)
18-7/8"
(478mm)
29-1/2"
(749mm)
Air Discharge
Opening
REAR VIEW
68-1/4"
(1734mm)
Customer Piping and Wiring Connections
310807
Pg. 4, Rev. 0
Liebert® CW™
Striated area indicates the
recommended minimum
clearance for component
access
Standard bottom connections require unit to be placed
on a floor stand at least 9" (229mm) high.
If unit is to be placed on the floor, an opening is provided
in front left end panel for piping and high voltage wire routings.
Customer must drill holes in right end panel to route
low-voltage connections to standard location
(must be routed separate from any high voltage wires).
CW146 or
CW181
Base Unit
34
Dimensions
Figure 21 Cabinet and floor planning dimensions, CW300 and CW400, downflow with EC fans
118" (2997mm)
Opening
87"
(2210mm)
Opening
3/4"
(19mm)
Bezels
18" (457mm)
1"
(25mm)
91" (2311mm)
94"
(2388mm)
76"
(1930mm)
45" (1143mm)
92" (2337mm)
120" (3048mm)
1"
(25mm)
122" (3099mm)
1-1/2"
(38mm)
Filter Plenum
(shipped
separately)
Filters are removed
by removing front
panel of the plenum
Refer to DPN001693 for the electrical
and plumbing requirements
2 Cabinets
36"
(914mm)
48"
(1219mm)
24" (610mm)
Striated area indicates
the recommended
minimum clearance
for component access.
DPN002432
Rev. 0
Shaded area indicates the minimum
required area below the unit to be
unobstructed for the skirted floor stand
and fan service clearance.
35
Liebert® CW™
Dimensions
5.3
Cabinet and Floor Planning Dimensions—Upflow with EC Fans
Figure 22 Cabinet and floor planning dimensions, CW026-CW084, upflow, front return with EC fans
Note: Duct flanges on plenum
top for supply air ducting when
solid panel plenum is used.
35"
(889mm
Overall
Projection of
Display Bezel
3/4" (19mm)
B
Overall
A
Plenum
1"
(25mm)
72"
(1829mm)
Unit
Return Air Grille
Supplied on
Units with Front Return
Shaded areas indicate
a recommended
clearance of 36" (914mm)
for component access
and filter removal.
EC Fan
Terminal Box
1"
(25mm)
C
Base
33"
(838mm)
Base
75-1/4"
(1911mm)
72"
(1829mm)
FRONT AIR RETURN MODEL SHOWN
DPN002386
Pg. 1, Rev. 1
Left Side Detail View Without
Plenum or EC Fans
Dimensions, In. (mm)
Model
B
CW026, CW038, CW041
CW051, CW060
CW076, CW08
Liebert® CW™
Plenum Height
C
Supply Air
50 (1270)
48 (1219)
Grille Discharge
22.75 (578)
74 (1880)
72 (1829)
Top Discharge
22.75 (578), 30 (762), 36 (914
99 (2515)
97 (2464)
Source: DPN002386, Pg. 1, Rev. 1
36
Dimension A
Dimensions
Figure 23 Cabinet and floor planning dimensions, CW026-CW084, upflow, rear return with EC fans
1"
(25mm)
Return
Air Opening
A
Rear Air
Return Model
B
33"
22" (838mm)
(559mm)
D
C
1-1/8"
(29mm)
E
F
5-1/2"
(140mm)
Floor Cutout Dimensions
Bottom Air Return Model
DPN002386
Pg. 2, Rev. 1
Return Air
Opening
Dimensions Inches (Mm)
Net Weight, lb. (kg)
Model
A
B
C
D
E
F
Unit Only
Unit W/ Plenum & Fans
CW026
44 (1118)
18 (457)
5 (127)
3 (76)
46 (1168)
48 (1219)
518 (235)
750 (340)
CW038
44 (1118)
18 (457)
5 (127)
3 (76)
46 (1168)
48 (1219)
542 (246)
774 (351)
CW041
44 (1118)
18 (457)
5 (127)
3 (76)
46 (1168)
48 (1219)
589 (267)
821 (372)
CW051
68 (1727)
20 (508)
4 (102)
3 (76)
70 (1778)
72 (1829)
755 (342)
1118 (507)
CW060
68 (1727)
20 (508)
4 (102)
3 (76)
70 (1778)
72 (1829)
827 (375)
1190 (540)
CW076
86 (2184)
18 (457)
5 (127)
6 1/2 (165)
95 (2413)
97 (2464)
1141 (518)
1566 (710)
CW084
86 (2184)
18 (457)
5 (127)
6 1/2 (165)
95 (2413)
97 (2464)
1239 (562)
1664 (755)
Source: DPN002386, Pg. 2, Rev. 1
37
Liebert® CW™
Dimensions
Figure 24 Cabinet and floor planning dimensions, CW106, CW114, upflow with EC fans, front return
Note: Duct flanges on plenum
top for supply air ducting when
solid panel plenum is used.
35"
(889mm)
Overall
Projection of
Display Bezel
3/4" (19mm)
122"
(3099mm)
Overall
A
Plenum
1"
(25mm)
76"
(1930mm)
Unit
Return Air Grille
Supplied on
Units With Front Air Return
Shaded areas
indicate a recommended
clearance of 36" (914mm)
for component
access and filter removal
EC Fan Terminal Box
120"
(3048mm)
Base
33"
(838mm)
Base
79-1/4"
(2013mm)
76"
(1930mm)
Front Air Return Model Shown
Left Side Detail View Without
Plenum or EC Fans
DPN002387
Pg. 1, Rev. 1
Plenum Height
Supply Air
Dimension A
Grille Discharge
22.75 (578)
Top Discharge
22.75 (578), 30 (762), 36 (914
Source: DPN002387, Pg. 1, Rev. 1
Liebert® CW™
1"
(25mm)
38
Dimensions
Figure 25 Cabinet and floor planning dimensions, CW106, CW114, upflow with EC fans, rear return
24-1/4"
(616mm)
117-1/2"
(2984mm)
Return Air Filter Opening
2-1/4"
(57mm)
22"
(559mm)
Shaded area indicates a recommended
clearance of 25" (635mm) for rear return
filter removal on one end of the unit
Table 14
DPN002387
Pg. 2, Rev. 1
Net weight, CW106 - CW114 upflow, rear return models with EC fans
Model
Unit Only
Unit, Plenum
and Fans
CW106
1240 (562)
1827 (829)
CW114
1375 (624)
1962 (890)
39
Liebert® CW™
Dimensions
5.4
Cabinet and Floor Planning Dimensions—Downflow with Centrifugal Fans
Figure 26
Cabinet and floor planning dimensions, CW026-CW084, downflow with centrifugal fans
J
Projection of
Display Bezel
3/4" (19mm)
Overall Di
2" (50.8mm)
Overall A
Dimen
sio
mension
C
D
turn
Air Re g
Openin
Projection of
Display Bezel
3/4" (19mm)
n
2"
B
Air Re
turn O
penin(50.8mm)
g
1"
(25.4mm)
1"
(25.4mm)
72"
(1829mm)
J
Overall
Dimensi
on
C
binet
Unit Ca
F
Plenum
Overall
K
rn
Air Retu
Opening
A
Overall
Dimens
ion
Unit An
d Plenu
m
1"
(25.4mm)
Air Re
B
turn O
pening
2"
(50.8mm)
Pre-Filter
Plenum
9"
(228mm)
72"
(1829mm)
1"
(25.4mm)
Un
E
it B
as
e
Shaded areas indicate
a recommended clearance
of 36" (914mm) for component
access and filter removal.
F ase
B
it
Un
Unit Dimensions
1"
(25.4mm)
F
9"
(228mm)
3"
(76.2mm)
G
Models With Pre-Filters
F
9"
Reheat Or Humidifier
(228mm)
Piping Opening
1"
(Optional Steam &
(25.4mm)
Hot Water Only)
1" (25.4mm)
H
Air Discharge
Opening
L
Air Discharge
Opening
20"
(508mm)
M
1"
(25.4mm)
20"
(508mm)
1"
(25.4mm)
Standard Piping
& Electrical Opening
E
Standard Piping
& Electrical Opening
E
Fl
Floor Cutout Dimensions
Forward Curved
(FC) Fan Units
oo
31"
Fl (787.4mm)
oo
rL
ev
el
18"
(457mm)
rL
ev
Floor Cutout Dimensions
Electronically Commutated
(EC) Fan Units
el
DPN001659
Rev. 1
Net Weight
lb (kg)
Dimensions, inches (mm)
Model
A
B
C
D
E
F
G
H
J
K
L
EC Only
M
EC Only
FC
EC
CW026
50
(1270)
46
(1168)
35
(889)
32
(813)
48
(1219)
33
(883)
8
(203)
37
(940)
35-5/8
(905)
31
(787)
28
(711)
2-7/8
(73)
760
(345)
800
(363)
CW038
50
(1270)
46
(1168)
35
(889)
32
(813)
48
(1219)
33
(883)
8
(203)
37
(940)
35-5/8
(905)
31
(787)
28
(711)
2-7/8
(73)
795
(361)
840
(381)
CW041
50
(1270)
46
(1168)
35
(889)
32
(813)
48
(1219)
33
(883)
8
(203)
37
(940)
35-5/8
(905)
31
(787)
28
(711)
2-7/8
(73)
855
(388)
900
(408)
CW051
74
(1880)
70
(1778)
35
(889)
32
(813)
72
(1829)
33
(883)
8
(203)
61
(1549)
35-5/8
(905)
31
(787)
51-1/4
(1302)
2-7/8
(73)
1090
(494)
1220
(553)
CW060
74
(1880)
70
(1778)
35
(889)
32
(813)
72
(1829)
33
(883)
8
(203)
61
(1549)
35-5/8
(905)
31
(787)
51-1/4
(1302)
2-7/8
(73)
1115
(524)
1250
(567)
CW076
99
(2515)
95
(2413)
35
(889)
32
(813)
97
(2464)
33
(883)
15-1/4
(387)
78-3/4
(2000)
35-5/8
(905)
31
(787)
60-3/4
(1543)
8-7/8
(225)
1320
(599)
1440
(653)
CW084
99
(2515)
95
(2413)
35
(889)
32
(813)
97
(2464)
33
(883)
15-1/4
(387)
78-3/4
(2000)
35-5/8
(905)
31
(787)
60-3/4
(1543)
8-7/8
(225)
1420
(644)
1540
(690)
Source: DPN001659, Rev. 1
Liebert® CW™
40
Dimensions
Figure 27 Cabinet and floor planning dimensions, CW106 - CW114, downflow with centrifugal fans
G
Projection of
Display Bezel
3/4" (19mm)
Overall D
imension
A
Overa
ll D
C
imesio
n
D
n
Air Retur
Opening
2" (50.8mm)
Air Re
B
turn O
penin
g
2"
(50.8mm)
G
Projection of
Display Bezel
3/4" (19mm)
76"
(1930mm)
Overall
Dimen
A
sion
Overa
ll
Unit a Dimesion
nd Ple
num
C
Unit Cab
inet
I
1"
(25.4mm)
Plenum
Overall
2"
(51mm)
n
Air Retur
Opening
H
Air Re
B
turn O
penin
g
2"
(50.8mm)
Pre-Filter
Plenum
Un
Shaded area indicates
a recommended clearance
of 36" (914mm)
for component access and
filter removal.
1"
(25.4mm)
E
it B
as
9"
(228mm)
e
F
Un
it
Ba
se
76"
(1930mm)
Unit Dimensional Data
F
20"
(508mm)
Air Discharge
Opening
C
1"
(25.4mm)
77"
(1955.8mm)
Standard Piping
Opening
Models with Pre-Filters
26"
(660.4mm)
28"
(711mm)
E
10"
(254mm)
1"
(25.4mm)
24"
(609.6mm)
*Electrical
Opening
6"
(152.4mm)
1"
(25.4mm)
See Figure 39 for standard
piping, electrical and air
discharge openings for
models with pre-filters.
16 1/4"
(412.75mm)
Floor Cutout Dimensions
*Note: “Electrical Opening” is also used for drain connection of
optional steam generating canister humidifier.
*This drawing pertains to CW106 and CW114 with forward-curved blowers only.
DPN001660
Rev. 0
Dimensions inches (mm)
Model
A
B
C
D
E
F
G
H
I
Net Weight
lb. (kg)
CW106
122
(3099)
118
(2997)
35
(889)
31
(787)
120
(3048)
33
(838)
35-5/8
(905)
30
(762)
34
(864)
1785
(810)
CW114
122
(3099)
118
(2997)
35
(889)
31
(787)
120
(3048)
33
(838)
35- 5/8
(905)
30
(762)
34
(864)
1925
(873)
Source: DPN001660, Rev. 0
41
Liebert® CW™
Dimensions
5.5
Cabinet and Floor Planning Dimensions—Upflow with Centrifugal Fans
Figure 28 Cabinet and floor planning dimensions, CW026-CW084, upflow with centrifugal fans
35-5/8"
)
(905mm
Overall Di
Projection of
Display Bezel
3/4" (19mm)
mension
35"
)
(889mm
Overa
A
ll Dime
nsion
L
Duct Flanges on two blowers
H
1"
(25.4mm)
K
J
J
M
Front of Unit
Duct Flanges on 1 blower
72"
(1829mm)
H
K
J
Front of Unit
1" (25.4mm) Flang
for Plenum Connection
Note: Flanges
provided on
Blower(s)
outlet for
supply air
ducting.
Air grille may
be supplied on
units with front
or rear return air.
Un B
Shaded area indicates
it B
as
a recommended clearance
e
of 36" (914mm) for component
access and filter removal. Refer to
the user manual for
recommended minumum
clearance.
Unit
33" m)
8m 22"
8
( 3
(559mm)
" )
3 3 mm
38 se 1"
a
it B (25.4mm)
Un
(8
1"
(25.4mm)
Dimensional Data
5-1/2"
(139.7mm)
1-1/8"
(28.6mm)
D pen
O
Air Return Opening
Ai
G
e
rR
tu
Air Return
Opening
B
C
F
Fl
oo
CW026
1
CW038
1
CW041
1
CW051
2
CW060
2
CW076
2
CW084
2
ev
el
A return air grille
may be ordered in
place of the duct
flange. See specification
sheet for option supplied.
DPN001661
Rev. 1
Dimensions, inches (mm)
A
B
C
D
E
F
G
H
J
K
L
50
(1270)
50
(1270)
50
(1270)
74
(1880)
74
(1880)
99
(2515)
99
(2515)
48
(1219)
48
(1219)
48
(1219)
72
(1829)
72
(1829)
97
(2464)
97
(2464)
46
(1168)
46
(1168)
46
(1168)
70
(1778)
70
(1778)
95
(2413)
95
(2413)
44
(1118)
44
(1118)
44
(1118)
68
(1727)
68
(1727)
86
(2184)
86
(2184)
3
(76)
3
(76)
3
(76)
3
(76)
3
(76)
6-1/2
(165)
6-1/2
(165)
5
(127)
5
(127)
5
(127)
4
(102)
4
(102)
5
(127)
5
(127)
18
(457)
18
(457)
18
(457)
20
(508)
20
(508)
18
(457)
18
(457)
15-7/8
(403)
15-7/8
(403)
15-7/8
(403)
15-7/8
(403)
15-7/8
(403)
15-7/8
(403)
15-7/8
(403)
18-5/8
(473)
18-5/8
(473)
18-5/8
(473)
14-5/8
(371)
14-5/8
(371)
18-5/8
(473)
18-5/8
(473)
2-3/16
(55)
2-3/16
(55)
2-3/16
(55)
2-3/16
(55)
2-3/16
(55)
3-1/4
(82)
3-1/4
(82)
17-3/8
(454)
17-3/8
(454)
17-3/8
(454)
20-3/8
(517)
20-3/8
(517)
20-5/8
(524)
20-5/8
(524)
Source: DPN001661, Rev. 1
Liebert® CW™
rn
Models with Rear Return
rL
Models with Bottom Return
No. of
Fans
g
E
Floor Cutout Dimensions
Model
in
42
M
—
—
—
11-1/4
(286)
11-1/4
(286)
12-5/8
(321)
12-5/8
(321)
Net Weight,
lb (kg)
760
(345)
795
(361)
855
(388)
1090
(494)
1155
(524)
1320
(599)
1420
(644)
Dimensions
Figure 29 Cabinet and floor planning dimensions, CW106-CW114, upflow with centrifugal fans
122" Overall
(3099mm)
Duct Flanges on 3 Blowers
35" Overall
(889mm)
Projection of Display
Bezel 3/4" (19mm)
122" Overall
(3099mm)
32"
(813mm)
Plenum
Flange
2" (51mm)
A
B
35"
(889mm)
Ref.
D
118"
(2997mm)
Plenum Flange
E
C
C
C
E
Front of Unit
Blower Duct Flange Location
2"
(51mm)
76"
(1930mm)
Top of Unit
Blower Deck
F
76"
(1930mm) Ref.
Front or Rear Air Supply
1" (25mm) flange
for decorative
plenum alignment
Flanges provided
on blower outlets
for supply air ducting.
Air grille
supplied on
units with front
return air only
Shaded areas indicate
a recommended clearance
of 36" (914mm) for component
access and filter removal.
120" Base
(3048mm)
1"
(25mm)
33" Base
(838mm)
Unit Dimensions
Filter Access
(Both Ends)
24-1/4" (616mm)
Shaded area indicates
a recommended clearance
of 25" (635mm) for rear
return filter removal
on one end of the unit.
Air Return
Opening
117-1/2"
(2985mm)
2-1/4"
(57mm)
22" (559mm)
4" (102mm)
Duct Connections
DPN001662
Rev. 2
Models With Rear Return
Model
Fans
15 x 15
CW106
CW114
Dimensions, In. (mm)
Supply
Motor
hp
A
B
C
Top Front
10-15
27-1/2 (699)
3-1/2 (89)
18 -11/16 (475)
16-3/16 (411) 10 (254) 4-1/2 (114)
Top Rear
10-15
27-1/2 (699)
12-5/16
(313)
18 -11/16 (475)
16-3/16 (411) 10 (254) 4-1/2 (114)
Top Front
10-1
30 (762)
3-1/2 (89)
14-3/4 (375)
16-3/16 (411) 10 (254) 4-1/2 (114)
20
30 (762)
3-1/2 (89)
14-3/4 (375)
16-3/16 (411) 10 (254) 4-1/2 (114)
10-20
30 (762)
12-5/16 (313)
14-3/4 (375)
16-3/16 (411) 10 (254) 4-1/2 (114)
15 x 11
Top Rear
D
E
F
Source: DPN001662, Rev. 2
43
Liebert® CW™
Dimensions
5.6
Dimensions—Cut-Down Frame, Downflow Models with Centrifugal Fans
Figure 30 Dimensions, cut-down frame, downflow models, centrifugal fans
Drawing views are simplified to show overall dimensions.
Electric Box
C
Frame Separation
Point
6"
(152mm)
Cooling Coil
D
B
Blower
Blower
A
33"
(838mm)
Chilled Water Valve
DPN001664
Rev.0
Note: Cut-down frame disassembly instructions are provided with each unit.
* This drawing is not applicable to units with EC fans.
Dimensions, in. (mm)
Model
A
B
C
D
CW026, CW038, CW041
48 (1219)
44-1/2 (1130)
27-1/2 (699)
56-7/16 (1434)
CW051, CW060
72 (1829)
44-1/2 (1130)
27-1/2 (699)
56-7/16(1434)
CW076, CW084
97 (2464)
44-1/2 (1130)
27-1/2 (699)
56-7/16 (1434)
CW106, CW114
120 (3048)
45 (1143)
31 (787)
60-3/8 (1534)
Not applicable to units with EC fans
Source: DPN001664, Rev. 0
Liebert® CW™
44
Dimensions
5.7
Blower Outlet and Deck Dimensions—Upflow Models CW106-CW114 with
Centrifugal Fans
Figure 31 Blower outlet and deck dimensions, CW106 and CW114 upflow models with centrifugal fans
Top of Unit
122" (3099mm) Ref
Blower Deck
Duct Flanges on Three Blowers
A
F
B
D
76"
(1930mm)
Ref
35"
(889mm)
Ref
C
E
C
E
C
Front or Rear Air Supply
Front of Unit
Blower Duct Flange Location
DPN001663
Rev. 1
NET WEIGHT lb (kg)
CW106 = 1785 (810)
CW114 = 1925 (873)
Dimensions, in. (mm)
Model Blower
15x15
CW106
CW114
Supply
Motor hp
A
B
Top Front
10-15
27-1/2 (699)
3-1/2 (89)
Top Rear
10-15
27-1/2 (699) 12-5/16 (313) 18-11/16 (475) 16-3/16 (411) 10 (254) 4-1/2 (114)
Top Front
10-15
30 (762)
3-1/2 (89)
14-3/4 (375)
16-3/16 (411) 10 (254) 4-1/2 (114)
10-20
30 (762)
3-1/2 (89)
14-3/4 (375)
16-3/16 (411) 10 (254) 4-1/2 (114)
10-20
30 (762)
12-5/16 (313)
14-3/4 (375)
16-3/16 (411) 10 (254) 4-1/2 (114)
15 x 11
Top Rear
C
D
E
F
18-11/16 (475) 16-3/16 (411) 10 (254) 4-1/2 (114)
Source: DPN001663, Rev. 1
45
Liebert® CW™
Piping
6.0
PIPING
6.1
Piping—General Arrangement
Figure 32 General arrangement, downflow models
Air Flow
Bleed
Valve
Valve
Actuator
Chilled
Water
Return
AB
A
B
Chilled
Water
Supply
Ball
Valve
(Optional)
Chilled
Water
Coil
3-Way
Chilled
Water
Valve
* Shutoff
Valve
Air Flow
Flow
Switch
(Optional)
3-Way Valve
Bleed
Valve
* Hose Bibs
Chilled
Water
Return
Valve
Actuator
Chilled
Water
Supply
2-Way
Chilled
Water
Valve
* Shutoff
Valve
Ball
Valve
(Optional)
2-Way Valve
Factory Piping
Field Piping
* Hose Bibs
Liebert® CW™
Chilled
Water
Coil
46
*Components are not supplied by Emerson, but
are recommended for proper circuit operation
and maintenance
DPN001657
Rev. 1
Piping
Figure 33 General arrangement, upflow models
Air Flow
Bleed
Valve
Chilled
Water
Supply
Valve
Actuator
Chilled
Water
Return
Chilled
Water
Coil
A
AB
* Shutoff
Valves
B
Flow
Switch
(Optional)
3-Way
Chilled
Water
Valve
Ball Valve
(Optional )
3-Way Valve
Air Flow
* Hose Bibs
Chilled
Water
Supply
Chilled
Water
Return
Bleed
Valve
Valve
Actuator
2-Way
Chilled
Water
Valve
Chilled
Water
Coil
2-Way Valve
* Shutoff
Valves
* Components are not supplied by Emerson, but
are recommended for proper circuit operation
and maintenance
Factory Piping
Ball Valve
(Optional)
Field Piping
DPN001658
Rev. 0
* Hose Bibs
47
Liebert® CW™
Piping
6.2
Piping Connections—Downflow Models with EC Fans or Centrifugal Fans
Figure 34 Piping connections, downflow models with EC fans or centrifugal fans
Monitoring
Panel
Note: Install all piping
per local codes.
C - Steam Reheat Supply Line
Condensate Drain. Field pitch a min. of
1/8” (3mm) per ft. (305mm). 3/4” NPT for
units without factory installed condensate
pump. Do not install an external trap.
1/2” OD CU for units with factory installed
condensate pump.
D - Hot Water Reheat Supply Line .
E - Steam Reheat Return Line
(Field install factory supplied
steam trap with vacuum breaker)
1/4” OD CU Humidifier Supply Line (Steam Gen./Infrared)
B - Chilled Water Return Line
- Chilled Water Supply Line on unites with High Pressure
2-Way Valve Only.
A - Chilled Water Supply Line.
- Chilled Water Return Line on units with High Pressure
2-Way Valve Only.
F - Hot Water Reheat Return Line
1/2” NPT Male Steam Humidifier Supply Line
1/2” NPT Male Steam Humidifier Return Line
Optional Reheat Schematics
Supply
Return
Y-Strainer
Actuator
Steam Humidifier
Supply
Steam Trap
Return
Y-Strainer
Hot Water Reheat Coil
Optional Hot Water Reheat (2-Way Valve)
Optional Steam Humidifier
Actuator
Actuator
Return
Supply
Y-Strainer
Return
Supply
Steam Trap
Steam Reheat Coil
Y-Strainer
Hot Water Reheat Coil
Optional Steam Reheat
Optional Hot Water Reheat (3-Way Valve)
DPN001666
Rev. 0
Piping Connection Sizes, inches
Model Numbers
A, OD Cu
B, OD Cu
C, NPT Male
D, OD Cu
E, NPT Male
F, OD Cu
CW026
1-1/8
1-1/8
1/2
5/8
1/2
5/8
CW038
1-3/8
1-3/8
1/2
5/8
1/2
5/8
CW041
1-5/8
1-5/8
1/2
5/8
1/2
5/8
CW051
1-5/8
1-5/8
1/2
7/8
1/2
7/8
CW060
2-1/8
2-1/8
3/4
7/8
3/4
7/8
CW076
2-1/8
2-1/8
3/4
7/8
3/4
7/8
CW084
2-1/8
2-1/8
3/4
7/8
3/4
7/8
Source: DPN001666, Rev. 0
Liebert® CW™
48
Piping
Figure 35 Piping connections, downflow models, 120" frame with EC fans or centrifugal fans
Monitoring
Panel
Note: Install all piping
per local codes.
3/4” NPT Steam Generating Canister Humidifier Drain. Field-pitch a
min. of 1/8” (3mm) per ft. (305mm). Do not install an external trap.
B - Chilled Water Return Line
three-way only
1/4” OD CU Humidifier Water Supply Line
Condensate Drain. Field-pitch a min. of
1/8” (3mm) per ft. (305mm). 1-1/8“ NPT for
units without factory-installed condensate
pump. Do not install an external trap.
1/2” OD CU for units with factory-installed
condensate pump.
A - Chilled Water Supply Line.
- Chilled Water Return Line
on units with high pressure
two-way valve only
B - Chilled Water Return Line
- Chilled Water Supply Line
on unites with high pressure
two-way valve only.
1/2” NPT Male Steam Humidifier Return Line
1/2” NPT Male Steam Humidifier Supply Line
C - D - Steam/Hot Water Reheat Supply Line
E - F - Steam/Hot Water Reheat Return Line
Optional Reheat Schematics
Supply
Return
Y-Strainer
Actuator
Steam Humidifier
Steam Trap
Return
Supply
Y-Strainer
Hot Water Reheat Coil
Optional Hot Water Reheat (2-Way Valve)
Optional Steam Humidifier
Actuator
Actuator
Return
Supply
Y-Strainer
Return
Supply
Steam Reheat Coil
Steam Trap
Y-Strainer
Optional Steam Reheat
Hot Water Reheat Coil
Optional Hot Water Reheat (3-Way Valve)
DPN001667
Rev. 0
*This drawing pertains to CW106 and CW114 with forward curved blowers only.
Piping Connection Sizes, in.
Model
Numbers
A, OD Cu
B, OD Cu
C, NPT Male
D, OD Cu
E, NPT Male
F, OD Cu
CW106
2-1/8
2-1/8
3/4
7/8
3/4
7/8
CW114
2-5/8
2-5/8
3/4
7/8
3/4
7/8
49
Liebert® CW™
Piping
6.3
Primary Piping Connection Locations—Downflow Models with EC Fans
Figure 36 Primary piping connections, downflow models CW026, CW038 and CW041 with EC fans
A
A
FRONT VIEW
All dimensions from right rear corner
of unit with panels assembled
NOTE: Drawing not to scale.
Tolerance on all piping
locating dimensions
±1/2" (13mm).
X
Section A-A
0
Y
31" (787mm)
Air Discharge
Area
28-1/16" (714mm)
Air Discharge
Area
35"
(889mm)
CD
LV
CWP
B
HV
HUM
FRONT OF UNIT
DPN002036
Rev. 1
50" (1270mm)
Field pitch Condensate Drain line a minimum of 1/8" (3.2mm) 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.
Point
CD
HUM
CWP
Description
X, in (mm)
Y, in (mm)
35-1/16 (891)
29 5/16 (745)
Humidifier Supply Line
34-9/16 (878)
31-3/8 (797)
1/4" (6mm) Cu Sweat
Chilled Water Piping Slot (Center)
43-7/16 (1104)
31-5/8 (803)
9" x 2-1/2" (229 x 64mm)
—
—
CW026: 1-1/8" (29mm)
—
—
CW038: 1-3/8" (32mm)
Condensate Drain*
w/Optional Condensate Pump**
Supply & Return Piping Diameter
Connection Size / Opening
3/4" (19mm) FPT
1/2 (13) Cu Sweat
—
—
CW041: 1-5/8" (41mm)
HV
High-Volt Electrical Connection
37-7/16 (951)
31-5/8 (803)
2-1/2" (64mm
LV
Low-Volt Electrical Connection
35-7/16 (900)
31-5/8 (803)
7/8" (22mm)
B
Blower Outlet Opening
4 (101)
33 (838)
28-1/16" x 31" (714 x 787mm)
** Optional Condensate Pump to be field-installed under unit.
Source: DPN002036, Rev. 1
Liebert® CW™
50
Piping
Figure 37 Primary piping connections, downflow models CW051 and CW060 with EC fans
A
A
FRONT VIEW
NOTE: Drawing not to scale.
Tolerance on all piping
locating dimensions
±1/2" (13mm).
All dimensions from right rear corner
of unit with panels assembled
X
Section A-A
0
Y
31" (787mm)
Air Discharge
Area
24-1/4" (615mm)
Air Discharge
Area
35"
(889mm)
24-1/2" (623mm)
Air Discharge
Area
CD
CWP
HV
B
LV
HUM
FRONT OF UNIT
DPN002035
Rev. 1
74" (1880mm)
Field pitch Condensate Drain line a minimum of 1/8" (3.2mm) 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.
Point
CD
HUM
CWP
Description
X, in (mm)
Y, in (mm)
61 (1550)
27-3/4 (705)
Humidifier Supply Line
58-3/8 (1484)
31-7/16 (799)
1/4" (6mm) Cu Sweat
Chilled Water Piping Slot (Center)
66-1/2 (1690)
31-1/4 (794)
11" x 3" (279 x 76mm)
—
—
CW051: 1-5/8" (41mm)
—
—
CW060: 2-1/8" (54mm)
Condensate Drain*
w/Optional Condensate Pump**
Supply & Return Piping Diameter
Connection Size / Opening
3/4" (19mm) FPT
1/2 (13) Cu Sweat
HV
High-Volt Electrical Connection
59-1/2 (1512)
29-3/4 (756)
3" (76mm
LV
Low-Volt Electrical Connection
59-1/2 (1512)
32 (813)
7/8" (22mm)
B
Blower Outlet Opening
4 (101)
33 (838)
51" x 31" (1295 x 787mm)
** Optional Condensate Pump to be field-installed under unit.
Source: DPN002035, Rev. 1
51
Liebert® CW™
Piping
Figure 38 Primary piping connections, downflow models CW076 and CW081 with EC fans
NOTE: Drawing not to scale.
Tolerance on all piping
locating dimensions
±1/2" (13mm).
A
A
All dimensions from right rear corner
of unit with panels assembled
X
0
FRONT VIEW
Section A-A
Y
28" (711mm)
Air Discharge
Area
31" (787mm)
Air Discharge
Area
HV
CWP
35"
(889mm)
HUM
LV
CD
B
DPN002034
Rev. 1
99" (2514mm)
FRONT OF UNIT
Field pitch Condensate Drain line a minimum of 1/8" (3.2mm) 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.
Point
CD
HUM
CWP
Description
X, in (mm)
Y, in (mm)
76-3/8 (1940)
30-7/8 (784)
Humidifier Supply Line
73-7/16 (1865)
31-7/16 (799)
1/4" (6mm) Cu Sweat
Chilled Water Piping Slot (Center)
91-3/8 (2321)
31-3/8 (797)
101-5/16" x 2-5/16" (277x 74mm)
Supply & Return Piping Diameter
—
—
2-1/8" (54mm)
Condensate Drain*
w/Optional Condensate Pump
Connection Size / Opening
3/4" (19mm) FPT
1/2 (13) Cu Sweat
HV
High-Volt Electrical Connection
83-7/8 (2130)
30-7/8 (784)
3" (76mm
LV
Low-Volt Electrical Connection
81-3/8 (2067)
31-7/16 (799)
7/8" (22mm)
B
Blower Outlet Opening
9-13/16 (249)
33 (838)
60-13/16" x 31" (1544 x 787mm)
Source: DPN002034, Rev. 1
Liebert® CW™
52
Piping
Figure 39 Primary piping connections, downflow models CW089, CW106 and CW114 with EC fans
Note: Drawing not to scale
All dimensions from
rear corner of unit
includes panels.
A
A
Tolerance on
all piping dimensions
is ± 1/2” (13mm).
Front View
X
Section A-A
O
Y
CWR 3
CWR 3
28 1/6”
(712mm)
Typical
Air Discharge
Area
31”
(787mm)
Typical
Air Discharge
Area
CWS 2
CD
HUM
35”
(889mm)
LV1
LV2
E1
E2
B
Front of Unit
CWR 2
122”
(3099mm)
* Field-pitch condensate drain line a minimum of 1/8” (3.2mm) 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.
DPN001628
Rev. 5
Point
CD
Description
Condensate Drain *
X, In. (mm)
Y, In. (mm)
Connection Size / Opening
103-1/2 (2629)
28 (711)
1-1/4" FPT
W/ Optional Pump
103-1/2 (2629)
28 (711)
1/2" Cu Sweat
HUM
Humidifier Supply Line
107-1/2 (2731)
29 (737)
1/4" Cu Sweat
CWS 2
2-Way Chilled Water Supply
118-1/2 (3010)
31 (787)
CW106: 2-1/8"; CW089, CW114: 2-5/8"
CWS 3
3-Way Chilled Water Supply
115-1/2 (2934)
31 (787)
CW106: 2-1/8"; CW089, CW114: 2-5/8"
CWR 2
2-Way Chilled Water Return
112-1/2 (2858)
31 (787)
CW106: 2-1/8"; CW089, CW114: 2-5/8"
CWR 3
3-Way Chilled Water Return
115-1/2 (2934)
22 (559)
CW106: 2-1/8"; CW089, CW114: 2-5/8"
E1
Electrical Conn. (High-Volt)
35 (889)
31 (787)
2"
E2
Electrical Conn. (High-Volt)
34 (864)
29 (737)
2"
LV1
Electrical Conn. (Low-Volt)
35-1/2 (902)
26-1/2 (673)
1-3/8"
LV2
Electrical Conn. (Low-Volt)
33-1/2 (851)
26-1/2 (673)
1-3/8"
B
Blower Outlet
4 (102)
33 (838)
94" x 31" (2388 x 787mm)
Source: DPN001628, Rev. 5
53
Liebert® CW™
Piping
Figure 40 Primary piping connections, downflow models CW146 and CW181 with EC fans
Note: Drawing not to scale.
Tolerance on
all piping dimensions
is ± 1/2" (13mm).
A
A
Front View
All dimensions from
rear corner of unit
including panels
X
Section A-A
O
Y
41"
(1041mm) TYP
Air Discharge
Area
CWR
29-3/8"
(746mm) TYP
Air Discharge
Area
47"
(1194mm)
CD
CWS
LV1
LV2
LV3
HUM
B
E1 E2
122" (3099mm)
DPN001693
Rev. 2
Front 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.
Point
X, In. (mm)
Y, In. (mm)
Connection Size / Opening
Condensate Drain *
110 (2794)
28 (889)
1-1/4" FPT
W/ Optional Pump
110 (2794)
35 (889)
1/2" Cu Sweat
Humidifier Supply Line
101 (2565)
43 (1092)
1/4" Cu Sweat
2-Way Chilled Water Supply
117 (2972)
37 (940)
3-1/8"
3-Way Chilled Water Supply
117 (2972)
37 (940)
3-1/8"
2-Way Chilled Water Return
117 (2972)
30 (762)
3-1/8"
3-Way Chilled Water Return
117 (2972)
30 (762)
3-1/8"
E1
Electrical Conn. (High-Volt)
113 (2870)
43 (1092)
2"
E2
Electrical Conn. (High-Volt)
110 (2794)
43 (1092)
2"
LV1
Electrical Conn. (Low-Volt)
2-1/2 (64)
36-1/2 (914)
7/8"
LV2
Electrical Conn. (Low-Volt)
2-1/2 (64)
37-1/2 (953)
7/8"
LV3
Electrical Conn. (Low-Volt)
B
Blower Outlet
CD
HUM
CWS
CWR
Description
2-1/2 (64)
39 (991)
7/8"
4-1/2 (1142)
44 (1118)
93" x 41" (2362 x 1041mm)
Source: DPN001693, Rev. 2
Liebert® CW™
54
Piping
Figure 41 Primary piping connections, downflow models, CW300 and CW400 with EC fans
A
NOTE
Drawing not to scale.
Tolerance on all piping dimensions
is ± 1/2" (13mm).
A
FRONT VIEW
SECTION A-A
CWR2
CD2
92"
(2337mm)
CWS2
C
41"
(1041mm)
Typ
Air Discharge
Area
CWR1
CD1
46"
(1168mm)
29-3/8" (746mm)
Typ Air Discharge
Area
LV1
LV2
LV3
Y
CWS1
E1
E2
B
X
O
122" (3099mm)
DPN002434
All dimensions from
FRONT OF UNIT
Rev. 0
front corner of unit
including panels
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.
Point
CD 1
CD 2
CWS1
CWS2
CWR1
CWR2
E1
E2
LV1
LV2
LV3
B
C
Description
Condensate Drain *
W/ Optional Pump
Condensate Drain *
W/ Optional Pump
2-Way Chilled Water Supply
3-Way Chilled Water Supply
2-Way Chilled Water Supply
3-Way Chilled Water Supply
2-way Chilled Water Return
3-way Chilled Water Return
2-way Chilled Water Return
3-way Chilled Water Return
Electrical Conn. (High-Volt)
Electrical Conn. (High-Volt)
Electrical Conn. (Low-Volt)
Electrical Conn. (Low-Volt)
Electrical Conn. (Low-Volt)
Front Blower Outlet
Rear Blower Outlet
X, In. (mm)
Y
Connection Size / Opening
12 (305)
12 (305)
12 (305)
12 (305)
5 (127)
5 (127)
5 (127)
5 (127)
5 (127)
5 (127)
5 (127)
5 (127)
9 (229)
12 (305)
119-1/2 (3035)
119-1/2 (3035)
119-1/2 (3035)
24-1/2 (622)
24-1/2 (622)
12 (305)
12 (305)
57 (1449)
57 (1449)
10 (254)
10 (254)
55 (1397)
55 (1397)
17 (432)
17 (432)
62 (1575)
62 (1575)
4 (102)
4 (102)
11 (279)
9-1/2 (241)
8 (203)
3 (76)
48 (1219)
1-1/4" FPT
1/2" CU SWEAT
1-1/4" FPT
1/2" CU SWEAT
3-1/8"
3-1/8"
3-1/8"
3-1/8"
3-1/8"
3-1/8"
3-1/8"
3-1/8"
2"
2"
7/8"
7/8"
7/8"
93" X 41" (2362 x 1041mm)
93" X 41" (2362 x 1041mm)
Source: DPN002434, Rev. 1
55
Liebert® CW™
Piping
6.4
Piping Connections—Upflow Models with EC Fans or Centrifugal Fans
Figure 42 Piping—Upflow models, CW026-CW084, EC or centrifugal fans
Unit Field Piping Locations
Plenum Field Piping Locations
Piping stubbed out inside unit end compartment for field
connection through 2-5/8" x 10-3/4" (66 x 273mm)
opening as shown. Piping may also exit through bottom
or top of end compartment by field-cutting an opening in
a suitable location (except bottom return air units).
For separate steam or hot water plenum in UPFLOW (UH)
units, piping may exit through bottom, top or sides by fieldcutting an opening in a suitable location.
A - Chilled Water Supply Line.
1" (25mm) rear panel
(Line is stubbed down, fieldinstall elbow for side
connection).
1-1/32" (26mm)
Plenum left
end panel
B - Chilled Water Return Line.
2-5/8" (66mm)
(Line is stubbed down, fieldinstall elbow for side
connection).
1/4" OD Cu Humidifier Water
Supply Line.
1/2" NPT Female Steam Humidifier
Supply Line.
Condensate Drain. Field-pitch a min. of
1/8" (3mm) per ft. (305mm). 3/4" NPT
for units without factory-installed
condensate pump. Do not install an
external trap.
1/2" OD CU for units with factoryinstalled condensate pump.
10-3/4"
(273mm)
7-1/2"
(191mm)
1/2" NPT Female Steam Humidifier
Return Line.
C - Steam Reheat Supply Line.
F - Hot Water Reheat Return
Line.
E - Steam Reheat Return Line
(Field-install factory supplied
steam trap with vacuum
breaker).
Piping outlet location on units
w/rear return option.
Unit left
end panel
Note: Install all piping
per local codes
Optional Plenum Reheat Schematics
D - Hot Water Reheat
Supply Line
Return
Supply
Y-Strainer
Actuator
Steam Humidifier
Supply
Steam Trap
Return
Y-Strainer
Hot Water Reheat Coil
Optional Hot Water Reheat (Two-Way Valve)
Optional Steam Humidifier
Actuator
Actuator
Return
Supply
Y-Strainer
Return
Supply
Steam Trap
Steam Reheat Coil
Optional Steam Reheat
Y-Strainer
Hot Water Reheat Coil
Optional Hot Water Reheat (Three-Way Valve)
Factory-Provided Piping Connection Sizes, inches
Models
A, OD Cu
B, OD Cu
C, NPT Female
D, OD Cu
E,
F, OD Cu
CW026
1-1/8
1-1/8
1/2
5/8
1/2
5/8
CW038
1-3/8
1-3/8
1/2
5/8
1/2
5/8
CW041
1-5/8
1-5/8
1/2
5/8
1/2
5/8
CW051
1-5/8
1-5/8
3/4
7/8
3/4
7/8
CW060
2-1/8
2-1/8
3/4
7/8
3/4
7/8
CW076
2-1/8
2-1/8
3/4
7/8
3/4
7/8
CW084
2-1/8
2-1/8
3/4
7/8
3/4
7/8
Source: DPN001668, Rev. 0
Liebert® CW™
56
DPN001668
Rev. 0
Piping
Figure 43 Piping, upflow models CW106 and CW114, EC or centrifugal fans
Piping stubbed out inside unit end
compartment for field-connection
through 13" x 6-1/2" (330 x 165mm)
opening as shown. Piping also may
exit through bottom of end
compartment by field-cutting
an opening.
A - Chilled Water Supply Line.
2-5/8" O.D. Cu on three-way
front return units only.
1/4" OD Cu Humidifier Water
Supply Line.
Condensate Drain
Field-pitch a min. of 1/8" (3mm) per ft. (305mm).
1-1/4" NPT for units without a factory-installed
condensate pump.
1/2" OD Cu for units with factory-installed
condensate pump. Do not install an external trap.
1" (25mm) rear panel
A - Chilled Water Supply Line
2-5/8" O.D. Cu on three-way
front return units only.
B - Chilled Water Return Line
2-5/8" O.D. Cu
7-1/2" (191mm)
3" (76mm)
Note: Install all piping
per local codes.
Unit left
end panel
DPN001669
Rev. 0
13"
(330mm)
57
Liebert® CW™
Ancillary Items
7.0
ANCILLARY ITEMS
7.1
Floor Stand Dimensions—Downflow Models with EC Fans
Figure 44 Floor stand dimensions, CW026, CW038 and CW041, downflow with EC fans
1" (25mm)
3/4"
(19mm)
14" (356mm)
Piping Access Area
31-1/2"
(800mm)
3/4"
(19mm)
3/4"
(19mm)
46-1/2" (1181mm)
SUPPORT FEET CENTERS
48" (1219mm)
See Note 4
33" (838mm)
3/4"
(19mm)
Typ.
7/8"
(23mm)
Typ.
A*
3" (76mm)
Typ.
49-1/2" (1257mm)
NOTE:
1) This floor stand should be used when EC fans are intended
to be lowered under a raised floor. The standard Liebert CW
floor stand can be used “if” the fans are to remain in their
original raised position.
2) All paneled sides of unit overhang floorstand 1" (25mm).
3) The floor stand used with EC units is not symmetrical and
its orientation to the Liebert CW is critical for lowering the EC fans.
Unless the floor stand is installed in the correct position, the
blowers will not lower into the floor stand.
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 “A”.
Liebert® CW™
58
34-1/2" (876mm)
OVERALL DEPTH
Height in ( mm )
A*
24 (610)
30 (762)
36 (914)
42 (1067)
48 (1219)
DPN002029
Rev. 0
Ancillary Items
Figure 45 Floor stand and floor planning dimensions, CW051 and CW060, downflow with EC fans
1" (25mm)
3/4"
(19mm)
15-3/4" (400mm)
Piping Access Area
31-1/2"
(800mm)
3/4"
(19mm)
3/4"
(19mm)
70-1/2" (1791mm)
SUPPORT FEET CENTERS
72" (1829mm)
7/8"
(23mm)
Typ.
See Note 4
3" (76mm)
Typ.
73-1/2" (1867mm)
NOTE:
1. This floor stand should be used when EC fans are intended
to be lowered under a raised floor. The standard Liebert CW
floor stand can be used if the fans are to remain in their
original raised position.
2) All paneled sides of unit overhang floor stand 1" (25mm).
3) The floor stand used with EC units is not symmetrical
and its orientation to the Liebert CW is critical for lowering
the EC fans. Unless the floor stand is installed in the correct
position, the blowers will not lower into the floor stand.
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 u 1-1/2” (38mm) adjustment
from nominal height “A”.
59
3/4"
(19mm)
Typ.
33" (838mm)
A*
34-1/2" (877mm)
OVERALL DEPTH
Height in ( mm )
A*
24 (610)
30 (762)
36 (914)
42 (1067)
48 (1219)
DPN002028
Rev. 0
Liebert® CW™
Ancillary Items
Figure 46 Floor stand dimensions, CW076 and CW084, downflow with EC fans
3/4"
(19mm)
1" (25mm)
25"
(635mm)
Piping Access Area
32"
(813mm)
Center Feet
31-1/2"
(800mm)
3/4"
(19mm)
47-3/4" (1213mm)
95-1/2" (2426mm)
SUPPORT FEET CENTERS
97" (2464mm)
3/4"
(19mm)
7/8"
(23mm)
Typ.
See Note 4
3" (76mm)
Typ.
98-1/2" (2502mm)
NOTE:
1) This floor stand should be used when EC fans are intended
to be lowered under a raised floor. The standard Liebert CW
floor stand can be used if the fans are to remain in their
original, raised position.
2) All paneled sides of unit overhang floorstand 1" (25mm).
3) The floor stand used with EC units is not symmetrical and
its orientation to the Liebert CW is critical for lowering the
EC fans. Unless the floor stand is installed in the correct
position, the blowers will not lower into the floor stand.
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 “A”.
Liebert® CW™
60
1"
(25mm)
Typ.
33" (838mm)
A*
Height in ( mm )
A*
24 (610)
30 (762)
36 (914)
42 (1067)
48 (1219)
35" (889mm)
OVERALL DEPTH
DPN002027
Rev. 0
Ancillary Items
Figure 47 Floor stand dimensions, CW89, CW106 and CW114 downflow with EC fans
1"
(25mm)
3/4"
(19mm)
20-1/4"
(514mm)
Piping Access
Area
31-1/2"
(800mm)
32" (813mm)
Center Feet
59-1/4" (1505mm)
118-1/2" (3010mm)
3/4"
(19mm)
Support Feet Centers
120" (3048mm)
3/4"
(19mm)
Typical
7/8"
(22mm)
Typical
See Note 4
3" (76mm)
Typical
1"
(25mm)
Typical
33" (838mm)
121-1/2" (3086mm)
Overall Width
NOTE:
1. This floor stand should be used when EC fans are intended to be lowered into
the floor stand. The standard Liebert CW floor stand can be used if the fans are to
remain in their original raised position.
2. All paneled sides of unit overhang floorstand 1” (25mm).
3. The floor stand used with EC units is not symmetrical and its orientation to the
Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in
the correct position, the blowers will not lower into the floor stand.
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 “A”.
61
A*
35" (889mm)
Overall Depth
Height,
Dimension A *
DPN001629
in (mm)
Rev. 4
24 (610)
30 (762)
36 (914)
42 (1067)
48 (1219)
Liebert® CW™
Ancillary Items
Figure 48 Floor stand and floor planning dimensions, CW089, CW106 and CW114, downflow with EC fans
1"
(25mm)
3/4"
(19mm)
20-1/4"
(514mm)
Piping Access
Area
31-1/2"
(800mm)
32" (813mm)
Center Feet
59-1/4" (1505mm)
118-1/2" (3010mm)
3/4"
(19mm)
Support Feet Centers
120" (3048mm)
3/4"
(19mm)
Typical
7/8"
(22mm)
Typical
See Note 4
3" (76mm)
Typical
1"
(25mm)
Typical
121-1/2" (3086mm)
Overall Width
NOTE:
1. This floor stand should be used when EC fans are intended to be lowered into
the floor stand. The standard Liebert CW floor stand can be used if the fans are to
remain in their original raised position.
2. All paneled sides of unit overhang floorstand 1” (25mm).
3. The floor stand used with EC units is not symmetrical and its orientation to the
Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in
the correct position, the blowers will not lower into the floor stand.
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 “A”.
Liebert® CW™
33" (838mm)
62
A*
35" (889mm)
Overall Depth
Height,
Dimension A *
DPN001629
in (mm)
Rev. 4
24 (610)
30 (762)
36 (914)
42 (1067)
48 (1219)
Ancillary Items
Figure 49 Floor stand dimensions, CW132 and CW163, downflow with EC fans
1"
(25mm)
3/4"
(19mm)
20-1/4"
(514mm)
Piping Access
Area
37"
(940mm)
Center Feet
36-1/2"
(927mm)
59-1/4" (1505mm)
3/4"
(19mm)
118-1/2" (3010mm)
Supporting Feet Centers
3/4"
(19mm)
Typical
120" (3048mm)
See Note 4
1"
(25mm)
Typical
7/8"
(23mm)
Typical
38" (965mm)
3" 76mm
A*
121-1/2" (3086mm)
Overall Width
Notes:
1.This floor stand should be used when EC fans are intended to be lowered into
the floor stand. The standard Liebert CW floor stand can be used if the fans are to
remain in their original raised position.
2. All paneled sides of unit overhang floorstand 1” (25mm).
3. The floor stand used with EC units is not symmetrical and its orientation to the
Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in
the correct position, the blowers will not lower into the floor stand.
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 “A”.
63
40" (1016mm)
Overall Depth
DPN002731
Rev. 0
Liebert® CW™
Ancillary Items
Figure 50 Floor stand and floor planning dimensions, CW146 and CW181, downflow with EC fans
1"
(25mm)
3/4"
(19mm)
20-1/4"
(514mm)
Piping access
area
44"
(1118mm)
Center Feet
43-1/2"
(1105mm)
59-1/4" (1505mm)
3/4"
(19mm)
118-1/2" (3010mm)
Supporting Feet Centers
120" (3048mm)
3/4"
(19mm)
Typ.
See Note 4
1"
(25mm)
Typ
7/8"
(23mm)
Typ.
45"
(1143mm)
3" (76mm)
121-1/2" (3086mm)
Overall Width
A*
NOTE:
1. This floor stand should be used when EC fans are intended to be lowered into
the floor stand. The standard Liebert CW floor stand can be used if the fans are to
remain in their original raised position.
2. All paneled sides of unit overhang floor stand 1" (25mm).
3. The floor stand used with EC units is not symmetrical, and its orientation to the
Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in
the correct position, the blowers will not lower into the floor stand.
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 “A”.
Liebert® CW™
64
47" (1194mm)
Overall Depth
Height in ( mm )
DPN001696
A*
Rev. 3
24 (610)
30 (762)
36 (914)
42 (1067)
48 (1219)
Ancillary Items
Figure 51 Floor stand dimensions, CW300 and CW400, downflow with EC fans
Notes
1) This floor stand should be used when EC fans
are to be lowered into the floor stand.
2) All paneled sides of unit overhang floor stand 1” (25mm).
3) The floor stand used with EC units is not symmetrical and its orientation to the Liebert CW
is critical for lowering the EC fans. Unless the floor stand is installed in the correct position,
the blowers will not lower into the floor stand.
4) Jack and jack support are shipped loose and are ntended 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 36" (914mm).
5) Hatched area for piping access.
20-1/4"
(514mm)
1" (25mm)
Height in ( mm )
A*
24 (610)
30 (762)
36 (914)
43"
42 (1067)
(1092mm)
48 (1219)
See Note 4
42-1/4"
(1073mm)
Center Of
Feet
4"
(102mm)
See Note 5
42-1/4"
(1073mm)
Center Of
Feet
43"
(1092mm)
1"
(25mm)
4"
(102mm)
Detail A
90" (2287mm)
3/4"
(19mm)
59-1/4" (1505mm)
118-1/2" (3010mm)
1"
(25mm)
120" (3048mm)
3/4"
(19mm)
1"
(25mm)
A*
46"
(1169mm)
A
3" (76mm) Typ.
122" (3099mm)
Overall Depth
92" (2338mm)
Overall Depth
7/8"
(23mm)
DPN002433
Rev. 0
65
Liebert® CW™
Ancillary Items
7.2
Floor Stand Dimensions—Downflow Models with Centrifugal Fans
Figure 52 Floor stand dimensions, CW026-CW084 downflow with centrifugal fans
1"
(25.4mm)
33"
(838mm)
3
8"
(76.2mm)
(203mm)
Standard
Piping and
Electrical
Entrance
Location
Optional Steam/Hot Water
Reheat or Humidifier Piping
Entrance Location
A + 2" (50.8mm) =
Overall Width of Unit Air Discharge
Opening
E
2"
(50.8mm)
D
1"
(25.4mm)
B
Length of
Vane = D - 1/8" (3mm)
Leg Support Supplied
on 18, 21 & 24" (457, 533 and
610mm) High Models
16-1/4"
(413mm)
A
J
C
H ±1-1/2" (38mm) *
Optional Turning Vane
Field-Installed in
Fan Discharge Opening
For Rear or Front Air
Discharge
62" (1574.8mm)
* Leveling feet are provided
with ± 1-1/2" (38mm)
adjustment from nominal height H.
56-3/4" (1441.5mm)
DPN001676
Rev. 0
Cross-bracing location for 72" frames only
Dimensions, in. (mm)
Model
CW026, CW038,
CW041
Height in. (mm)
Overall
Width of Unit
A
B
C
D
E
H* Nominal
J
50 (1270)
48
(1219)
0
0
36
(914)
8
(203)
9 (229)
6-1/2 (165)
12 (305)
9 (229)
12 (305)
CW051, CW060
74 (1880)
72
(1829)
0
0
60
(1524)
8
(203)
15 (381)
18 (458)
15 (381)
CW076, CW084
99 (2515)
97
(2464)
48-1/2
(1232)
48-1/2
(1232)
77-3/4
(1975)
15-1/4
(362)
21 (553)
18 (458)
24 (610)
21 (553)
Source: DPN001676, Rev. 0
Liebert® CW™
66
Ancillary Items
Figure 53 Floor stand dimensions, CW106 and CW114 downflow with centrifugal fans only
D
K
Air Discharge A + 2" (50.8mm) =
Opening
Overall width of unit
1"
(25.4mm)
E
Standard
piping and
electrical
entrance
location
G
1"
(25.4mm)
B
Length of
Vane = E - 1/8" (3mm)
F
A
J
C
H + 1 1/2" (38mm)*
Leg support supplied on 18, 21, and 24"
high models
Electrical Opening
* Leveling feet are provided with ± 1 1/2" (38mm) adjustment from nominal height H.
* This drawing pertains to CW106 and CW114 with forward-curved blowers only.
Optional turning vane
field installed in
fan discharge opening
for rear or front air
discharge
Dimensions, in. (mm)
DPN001677
Rev. 0
Height in. (mm)
Model
Overall
Unit Width
A
B
C
D
E
F
G
K
CW106,
CW114
122
(3099)
120
(3048)
60
(1524)
60
(1524)
33
(838)
100-3/4
(2559)
16-1/4
(413)
8-1/4
(210)
11
(279)
Source: DPN001677, Rev. 0
67
H*
Nominal
J
9 (229)
6-1/2 (165)
12 (305)
9 (229)
15 (381)
12 (305)
18 (458)
15 (381)
21 (553)
18 (458)
24 (610)
21 (553)
Liebert® CW™
Ancillary Items
7.3
Plenum Dimensions—Upflow with EC Fans
Figure 54 Plenum dimensions, CW026-CW084, upflow with EC fans
D
C
Note: Top duct flanges on plenum
top for supply air ducting when
solid panel plenum is used.
1"
(25mm)
2" (51mm)
1"
(25mm)
2"
(51mm)
20"
(508mm)
G
Both top duct opening
and grilles are shown.
See specification sheet
for specific application
E
A
B
F
1" (25mm)
)
1mm
D
C
5
2" (
2"
(50.8mm)
1" (25mm)
DPN002385
Rev. 1
Dimensions, in. (mm)
Plenum
Height
in. (mm)
A
B
C
D
E
F
Grille Free
Area, ft2 (m2)
CW026, CW038,
CW041
50 (1270)
34 (864)
46 (1168)
32 (813)
46 (1168)
2 (51)
4.29 (.40)
22-3/4 (578)
CW051, CW060
74 (1880)
34 (864)
70 (1778)
32 (813)
62 (1575)
6 (152)
5.85 (.54)
30 (762)
CW076, CW084
99 (2515)
34 (864)
95 (2413)
32 (813)
70 (1778)
14-1/2 (368)
6.83 (.63)
36 (914)
Model
Source: DPN002385, Rev. 1
Liebert® CW™
68
G
Ancillary Items
Figure 55 Plenum dimensions, CW106-CW114, upflow with EC fans
Note: Top duct flanges on plenum
top for supply air ducting when
solid panel plenum is used.
1" (25mm)
D
C
1.5"
(38mm)
20" (508mm)
J
1" (25mm)
G
B
Both top duct opening
and grilles shown. See
specification sheet
for specific application
H
I
E
F
E
A
1" (25mm)
D
C
m)
2"
(50.8mm)
0.8m
2" (5
1" (25mm)
DPN002384
Rev. 0
Plenum Dimensional Data In (mm)
Model
A
B
C
D
E
F
G
H
I
Grille Free
Area ft2 (m2)
CW106
CW11
122
(3099)
34
864)
118
(2997)
32
(813)
44
(1118)
3
76)
2
(51)
5
(127)
18
(457)
10.14
(.94)
Source: DPN002384, Rev. 0
69
Plenum Height Data
In (mm)
Supply Air
J
Grille and Top
Discharge
22.75
(578)
Top Discharge
Only
30
(762)
Top Discharge
Only
36
(914)
Liebert® CW™
Ancillary Items
7.4
Plenum Dimensions—Upflow with Centrifugal Fans
Figure 56 Plenum dimensions, CW106 and CW114, upflow with centrifugal fans
NOTE: Flanges
provided on blower(s)
outlet for supply air ducting
when solid panel plenum
is used.
7mm)
9
118" (29
1"
(25mm)
32"
(813mm)
L
18" (457mm)
K
1"
(25mm)
34"
(864mm)
Plenum Height
L
K
1" (25mm)
20" (508mm)
22-3/4" (578mm) 2-3/8" (60mm)
34-3/4" (883mm) 2-3/8" (60mm)
)
4" (102mm
3-1/2"
(89")
44"
)
(1118mm 122"
44"
)
(1118mm
)
m
m
9
9
0
(3
7"
(178mm)
16"
(406mm)
32"
(813mm)
97mm)
Both top duct openings and
front grille are shown. See
specification sheet for
specific application.
1" (25mm)
118" (29
2" (50mm)
2" (50mm)
1" (25mm)
Flange is standard on all units
except downflow models
where it must be specified
if required.
DPN001679
Rev. 1
Liebert® CW™
70
Ancillary Items
7.5
Ducting Dimensions—Upflow with EC Fans
Figure 57 Typical ducting arrangment, CW106 - CW114, upflow with EC fans
Typical ducting shown
may run either direction
Ducting attached
to provided plenum
flanges only
DPN002390
Rev. 0
71
Liebert® CW™
Ancillary Items
7.6
Plenum and Ducting Dimensions—Upflow with Centrifugal Fans
Figure 58 Duct connection and plenum dimensions, CW026 - CW084, upflow with centrifugal fans
NOTE: Flanges
provided on blower(s)
outlet for supply air ducting
when solid panel plenum
is used.
1" (25mm)
D
C
J
1"
(25mm)
2"
(50mm)
18" (457mm)
H
1"
(25mm)
Both top duct openings and
front grille are shown. See
specification sheet for
specific application.
E
B
A
F
2"
(50mm)
1"
(25mm)
D
C
2"
(50mm)
1"
(25mm)
Flange is standard on all units
except downflow models
where it must be specified
if required.
DPN001678
Rev. 1
Model
A
B
C
D
E
F
Grille Free
Area
ft2 (m2)
CW026
CW038
CW041
50
(1270)
34
(864)
46
(1168)
32
(813)
44
(1118)
3
(76)
CW051
CW060
74
(1880)
34
(864)
70
(1778)
32
(813)
60
(1524)
CW076
CW084
99
(2515)
34
(864)
95
(2413)
32
(813)
70
(1778)
Plenum Dimensional Data, in. (mm)
H
J
4.29
(.40)
20 (508)
1 (25)
7
(178)
5.85
(.54)
22-3/4 (578)
2-3/8 (60)
14 1/2
(368)
6.83
(.63)
34-3/4 (883)
2-3/8 (60)
Source: DPN001678, Rev. 1
Liebert® CW™
Plenum Height
in. (mm)
72
Seismic Application—Optional Unit Configuration Required
8.0
SEISMIC APPLICATION—OPTIONAL UNIT CONFIGURATION REQUIRED
The International Code Council’s, International Building Code (IBC) has become the primary code
document for the design and installation of building systems.
Emerson Network Power has conducted analytical modeling and dynamic shake table testing of the
Liebert CW product to provide an option for those systems requiring seismic certification of
compliance. This certification goes beyond the equipments ability to withstand the seismic forces: the
IBC system approach includes the equipment, equipment anchorage and the connections to the
equipment (power, water supply and return and ducting0. In critical applications, the equipment
must be capable of performing its primary function after a seismic event within the limit of
certification.
8.1
Seismic Certification Criteria
The Liebert CW certification is based on a maximum mapped spectral response acceleration, Ss, of
3.0g adjusted by the soil site coefficient to Soil Site Class D as the default when the site soil properties
or final equipment installation location is not known. The certification maximum spectral response
coefficient Sds value of 2.0g including Soil Class and Seismic Use group corrections. Soil Classes A, B,
C, D, E, and Seismic Design Categories A, B, C, D, E, and F are all covered under this certification,
limited by the Sds value stated above. A seismic importance factor, Ip, of 1.5 applies to this
certification to include essential facility requirements and life safety applications for post-event
functionality.
A seismic importance factor, Ip, of 1.5 applies to this certification to include essential facility
requirements and life-safety applications for the Liebert CW system’s functionality after a seismic
event.
Shake-table testing conducted in accordance with ICC-ES AC-156 enveloped a required response
spectrum (RRS) defined by a maximum flexible region acceleration (AFLEX) of 3.2g and a zero period
acceleration (ARIG) of 2.4g.
Table 15
8.2
Comparison of certification criteria, 2000-2006
IBC 2009
IBC 2006
IBC 2003
IBC 2000
Sds <=2.0
Sds <=2.0
Sds <=2.0
Sds <=2.0
Ip <=1.5
Ip <=1.5
Ip <=1.5
Ip <=1.5
ap/Rp <=0.5
ap/Rp <=1.25
ap/Rp <=1.0
ap/Rp <=1.0
z/h <=1.0
z/h <=1.0
z/h <=1.0
z/h <=1.0
Site Requirements
All floor and housekeeping pads must be approved by the structural engineer of record to resist the
added seismic loads from components being anchored as specified in 8.4 - Anchor and Load
Requirements of Seismic Installation. When anchoring the Liebert CW to a floor, rebar
interference must be considered.
The minimum housekeeping pad thickness must be the thickness required by the qualification report
for the selected post-installed anchor or 1.5 times the depth the anchor is embedded, whichever is
greater.
NOTE
Structural engineer of record is defined as: The registered design professional responsible for
the design of the designated seismic systems on the building construction documents.
73
Liebert® CW™
Seismic Application—Optional Unit Configuration Required
8.3
Requirements for Seismic Anchorage
8.3.1
Seismic Anchors
Mounting requirement details such as brand, type, embedment depth, edge spacing, anchor spacing,
concrete strength, wall bracing and special inspection must be outlined and approved by the project
structural engineer of record.
8.4
Anchor and Load Requirements of Seismic Installation
All floor and housekeeping pads must be approved by the structural engineer of record to resist the
added seismic loads from components being anchored as defined in this section. Data is presented by
system configuration. The maximum system loads are given for each loading location or floor stand foot.
The maximum load at the anchor is provided for proper sizing of the anchors (not provided by Emerson).
8.4.1
Seismic Anchorage Surface
Structural floors and housekeeping pads must also be seismically designed and approved by the
project structural engineer of record to withstand the seismic anchor loads as defined on the
installation drawings. The installing contractor is responsible for the proper installation of all
anchors and mounting hardware, observing the mounting requirement details outlined by the
engineer of record. Contact the manufacturer’s representative if a detailed Seismic Installation
Calculation Package is required.
NOTE
The floor stand used with EC units is not symmetrical, and its orientation to the Liebert CW is
critical to lowering the EC fans. Unless the floor stand is installed in the correct position, the
blowers will not lower into the floor stand.
NOTE
Load interactions must be considered when selecting anchors.
Table 16
Downflow Liebert CW models on floor stand with 36" plenum, CW026-CW081
Model #
CW026-CW041DCS
CW051-CW060DCS
CW076-CW084DCS
CW089-CW114DCS
CW026-CW041DC1
CW051 CW060DC1
CW076-CW084DC1
CW089-CW114DC1
CW146-CW181DC1**
Maximum
Load per Anchor
Maximum
Load per Location
Tension
Shear
Tension
Shear
Anchors
per
Location
4
580.3
162.9
1218.2
326.2
2
1205
4
815.6
168.4
1710.9
337.1
2
24
1578
4
663.5
217.3
1460.6
434.6
2
48
1629
4
935.3
223.9
2054.8
447.8
2
24
1936
6
547.5
180.9
1200.9
361.9
2
48
2005
6
774.5
186.9
1695.6
374
2
24
2590
6
722.7
241.7
1611
483.4
2
48
2668
6
1009.7
248.6
2245.6
497.1
2
24
1108.1
4
554.8
155.1
1164.6
310.5
2
48
1149.8
4
778.6
160.5
1633.4
321.4
2
24
1538.4
44
648.2
211.8
1426.8
423.5
2
48
1588.6
4
913
218.4
2005.6
436.7
2
24
1881.1
6
533.1
175.6
1169.5
351.4
2
48
1950.3
6
753.5
181.7
1649.7
363.5
2
24
2589.5
6
722.7
241.7
1611
483.4
2
48
2667.6
6
1009.7
248.6
2245.6
497.1
2
24
3136.5
6
943
284.7
2017.7
569.6
2
48
3237
6
1233.8
294.5
2636.9
589.2
2
Floor
Stand
Height
Operating
Mass *
Restraint
Locations
24
1163
48
* Operating mass includes the operating water volume, floor stand and plenum
** 18" filter plenum only
Liebert® CW™
74
Seismic Application—Optional Unit Configuration Required
Table 17
Upflow Liebert CW models on floor stand with 36" plenum, CW026-CW114
Model Number
CW026-CW041UCS
CW051-CW060UCS
CW076-CW084UCS
CW089-CW114UCS
*
Maximum Load
per Anchor
Maximum Load
per Location
Floor
Stand
Height
Operating
Mass *
Restraint
Locations
Tension
Shear
Tension
Shear
Anchors
per
Location
24
1163.1
4
633.4
160.2
1329.8
320.6
2
48
1204.8
4
868.7
165.6
1822.6
331.6
2
24
1578.4
4
748.4
226.4
1646
452.6
2
48
1628.6
4
1020.2
233
2240.2
465.8
2
24
1936.1
6
613.1
184.6
1343.8
369.3
2
48
2005.3
6
840.1
190.6
1838.4
381.5
2
24
2589.5
6
816.4
250.6
1818.1
501.2
2
48
2667.6
6
1103.4
257.4
2452.7
514.9
2
Operating mass includes the operating water volume, floor stand and plenum.
Table 18
Downflow Liebert CW models on floor stand without plenum, CW026-CW081
Model Number
CW026-CW041DCS
CW051-CW060DCS
CW076-CW084DCS
CW089-CW114DCS
CW026-CW041DC1
CW051CW060DC1
CW076-CW084DC1
CW089-CW114DC1
CW146-CW181DC1**
Maximum Load
per Anchor
Maximum Load
per Location
Operating
Mass *
Restraint
Locations
Tension
Shear
Tension
Shear
Anchors
per Location
1008
4
427.9
142.5
898.7
285.4
2
1049
4
630.9
148
1323.8
296.3
2
1358
4
482
187.2
1062.6
374.3
2
1408
4
715.1
193.8
1572.1
387.5
2
1676
6
399.9
159.2
878.4
318.6
2
1745
6
595.5
165.3
1304.8
330.7
2
2255
6
539
211.5
1203.2
423
2
2333
6
788
218.3
1753.9
436.7
2
953
4
402.4
134.7
845.1
269.7
2
994
4
593.9
140.1
1246.2
280.6
2
1318
4
466.7
181.6
1028.8
363.2
2
1368
4
692.7
188.2
1523
376.4
2
1621
6
385.6
153.9
847
308
2
1690
6
574.6
160
1258.9
320.2
2
2255
6
539
211.5
1203.2
423
2
2333
6
788
218.3
1753.9
436.7
2
3136
6
943
284.7
2017.7
569.6
2
3237
6
1233.8
294.5
2636.9
589.2
2
* Operating mass includes the operating water volume, floor stand and plenum.
** 18" filter plenum only.
75
Liebert® CW™
Seismic Application—Optional Unit Configuration Required
Table 19
Upflow Liebert CW models on floor stand without plenum, CW026-CW114
Model Number
CW026-CW041UCS
CW051-CW060UCS
CW076-CW084UCS
CW089-CW114UCS
*
Maximum Load
per Location
Operating
Mass*
Restraint
Locations
Tension
Shear
Tension
Shear
Anchors
per Location
1008
4
481.1
139.8
1010.3
279.8
2
1049
4
684.1
145.2
1435.4
290.8
2
1358
4
566.9
193.8
1248
387.5
2
1408
4
799.9
200.4
1757.5
400.7
2
1676
6
465.5
159.7
1021.3
319.5
2
1745
6
661.2
165.7
1447.6
331.7
2
2255
6
632.7
220.4
1410.3
440.7
2
2333
6
881.8
227.2
1961
454.4
2
Operating mass includes the operating water volume, floor stand and plenum.
Table 20
*
Maximum Load
per Anchor
Upflow Liebert CW models direct mount to concrete without plenum, CW026-CW114
Model Number
Operating
Mass *
Restraint
Locations
CW026-CW041UCS
909
CW051-CW060UCS
1241
Maximum Load per Anchor
Tension
Shear
Anchors
per Location
6
664.5
192.5
1
6
919.3
258.6
1
CW076-CW084UCS
1519
6
1074.2
303.9
1
CW089-CW114UCS
2065
6
1094.7
398
1
Operating mass includes the operating water volume, floor stand and plenum.
Table 21
Upflow Liebert CW models direct mount to concrete with 36" plenum, CW026-CW114
Model Number
CW026-CW041UCS
Operating
Mass *
Restraint
Locations
1065
Maximum Load per Anchor
Tension
Shear
Anchors
per Location
6
929.8
226
1
CW051-CW060UCS
1461
6
1280.9
305.5
1
CW076-CW084UCS
1780
6
1498
355.9
1
CW089-CW114UCS
2400
6
1491.5
458.6
1
*
Operating mass includes the operating water volume, floor stand and plenum.
8.4.2
Seismic Connections to Unit
Electrical wiring, conduit, and/or other connections to the equipment is the responsibility of others.
Data and recommendations are supplied here and in the unit installation supplement for seismic
installation.
Liebert® CW™
76
Seismic Application—Optional Unit Configuration Required
Figure 59 Field-welding of anchor bracket—Seismic anchorage rigid floor stand, upflow models
CW026-CW114
FIELD WELDING OF ANCHOR BRACKET
TYPICAL 4 PLACES
1/8" (3mm)
1.8" (46mm)
Minimum
Typical Both Sides
ANSI B18.22.1
Type A, Series with
plain washer required at
each anchor location
1/8" (3mm)
2.6"
(67mm)
* Minimum
Hole Depth * Minimum
Embedment
* Specified by engineer of record
FLOOR ANCHORING DIMENSIONS
A
.9" (24mm)
2.3"
(59mm)
B
2.3"
(59mm)
DPN001803
Pg. 2, Rev. 3
FRONT
Dimensional Data in. (mm)
Upflow Model Number
A
B
Anchor
Size, in.
CW026, CW038, CW041
50 (1270)
29 (737)
1/2
CW051, CW060
74 (1880)
29 (737)
1/2
CW076, CW084
99 (2515)
29 (737)
1/2
CW106, CW114
122 (3099)
29 (737)
1/2
3.3" (83mm)
Anchor Location
Typical 6 Places
Anchor bolt sized per Hilti Kwik Bolt TZ carbon and stainless in concrete, ICC ESR-1917.
Alternates are subject to review by Emerson or engineer of record.
Source: DPN001803, Pg. 2, Rev. 3
77
Liebert® CW™
Seismic Application—Optional Unit Configuration Required
Figure 60 Anchor detail—Seismic anchorage rigid floor stand, downflow models CW026-181
ANCHOR DETAIL
Typical 6 Places
Minimum Edge Distance
2.5"
(65mm)
ANSI B18.22.1
Type A, Series w plain
washer required at
each anchor location
*Minimum Hole
Depth * Minimum
Embedment
* Minimum
Pad
Thickness
* Specified by engineer of record
FLOOR ANCHORING DIMENSIONS
A
A/2
FIELD-WELDING OF UNIT TO FLOORSTAND
Unit must be welded to floor stand to maintain certification
C
C
C
C
B
D
2" (44mm)
DPN001803
Pg. 3, Rev. 3
4" (89mm)
Dimensions in. (mm)
Model Number
Anchor
Size
A
B
C
D
CW026, CW038, CW041
1/2
46.5 (1181)
42.3 (1073)
3.0 (76)
4.0 (102)
CW051, CW060
1/2
70.5 (1791)
42.3 (1073)
3.0 (76)
4.0 (102)
CW076, CW084
1/2
95.5 (2426)
42.3 (1073)
4.0 (102)
6.0 (152)
CW089, CW106, CW114
1/2
118.5 (3010)
42.3 (1073)
4.0 (102)
6.0 (152)
CW146, CW181
1/2
118.5 (3010)
54.3 (1378)
6.0 (152)
8.0 (203)
Anchor bolt sized per Hilti Kwik Bolt TZ carbon and stainless in concrete, ICC ESR-1917.
Alternates are subject to review by Emerson or engineer of record.
Source: DPN001803, Pg. 3, Rev. 3
Liebert® CW™
78
D
1/8" (3mm)
Seismic Application—Optional Unit Configuration Required
Figure 61 Seismic certification as tested connection detail, upflow models CW026, CW114 and CW181
Floor Stand-Supported Liebert CW Anchorage
A
A
A
4 Places
A
B
2 Places
FRONT
B
Plan View of Unit Attachment
G
1/8"
Total 'C' - 7/8" Grade 7 Threaded Rods with
1/8" Thick Neoprene Pad
DETAIL G
Floor-Mounted Liebert CW Anchorage (CW114UCS)
6"
(152mm)
6 Places
FRONT
DETAIL F
Plan View of Attachment Angles
1/8"
Fastened to the Shake Table
Using 1/2" A325 Bolts
DPN001803
Pg. 11, Rev. 3
F
Weld Length, In. (mm)
Model #
A
B
Qty Supports
C
Floorstand
Height,
In (mm)
CS026DCS
3 (76.2)
4 (101.6)
4
12 (305)
CW114DC1
4 (101.6)
8 (203.2)
6
36 (914.4)
CW181DC1
6 (152.4)
6 (152.4)
6
36 (914.4)
Source: DPN001803, Pg. 11, Rev. 3
79
Liebert® CW™
Seismic Application—Optional Unit Configuration Required
Figure 62 IBC-certified seismic floor stand data, downflow with centrifugal fans
33"
(838mm)
A
H*
4.6" *
(117mm)
Optional Turning Vane
FOOT DETAIL
* Foot provides ±1.5" (38mm)
adjustment from nominal height H
DPN001803
Pg. 6, Rev. 3
Model
Overall Unit
Width
A
Height
H Nominal,
In. (mm)
CW026, CW038, CW041
50 (1270)
48 (1219)
12 (305)
CW051, CW060
74 (1880)
72 (1829)
15 (381)
CW076, CW084
99 (2515)
97 (2464)
18 (457)
CW106, CW114
120 (3048)
118 (2997)
21 (533)
24 (610)
Source: DPN001803, Pg. 6, Rev. 3
30 (762)
36 (914)
48 (1219)
Liebert® CW™
80
Seismic Application—Optional Unit Configuration Required
Figure 63 IBC-certified seismic floor stand data, downflow models CW026-181with EC fans
B
A
H*
4.6" *
(117mm)
FOOT DETAIL
* Foot provides ±1.5" (38mm)
adjustment from nominal height H
JACK
DPN001803
Pg. 7, Rev. 3
Model
Overall Unit
Width
A
B
Height
H Nominal,
In. (mm)
CW026, CW038, CW041
50 (1270)
48 (1219)
33 (838.2)
24 (610)
CW051, CW060
74 (1880)
72 (1829)
33 (838.2)
30 (762)
CW076, CW084
99 (2515)
97 (2464)
33 (838.2)
36 (914)
CW89, CW106, CW114
120 (3048)
118 (2997)
33 (838.2)
42 (1067)
CW146, CW181
120 (3048)
118 (2997)
45 (1143.0)
48 (1219)
Source: DPN001803, Pg. 7, Rev. 3
81
Liebert® CW™
Seismic Application—Optional Unit Configuration Required
Figure 64 Upflow plenum seismic mounting data, upflow models CW026-CW114
Note: Flanges provided
on blower(s) oulet for
supply air ducting when
solid panel plenum is used.
Intermediate support
panel(s) provided on
IBC-certified
top duct collar plenums only
(CW051 and higher)
Both top duct opening and
front grille are shown. See
specification sheet for
specific application.
Plenum Hold-Down Clip Detail
(Front Panel Removed For Clarity)
1/4" self-drilling
screws through
clip into unit top
#8 self-drilling
screws through
clip, unit duct
collar and plenum
panel flange
All clips and fasteners are required to maintain IBC certification of conformity
Plenum Hold-Down Clip Dimensions
A
B
B
B
D
DPN001803
Pg. 4, Rev. 3
C
Clips Required
Approximate Location, In. (mm)
Model Number
End
Front/Rear
Total
A
B
C
D
CW026, CW038, CW041
2
2
8
7.4 (188)
31.2 (792)
6.5 (165)
19.0 (483)
CW051, CW060
2
3
10
7.4 (188)
27.6 (701)
6.5 (165)
19.0 (483)
CW076, CW084
2
4
12
7.4 (188)
27.6 (701)
6.5 (165)
19.0 (483)
CW106, CW114
2
4
12
7.4 (188)
34.4 (874)
6.5 (165)
19.0 (483)
All clips and fasteners are required to maintain IBC certification of conformity.
Source: DPN001803, Pg. 4, Rev. 3
Liebert® CW™
82
Seismic Application—Optional Unit Configuration Required
Figure 65 Downflow plenum seismic mounting data models CW026-CW114
NOTE: Flanges provided
on blower(s) oulet for
supply air ducting when
solid panel plenum is used.
Both top duct opening and
front grille are shown. See
specification sheet for
specific application
Intermediate support
panel(s) provided on
ibc certified top duct
collar plenums only
(CW051 and larger)
PLENUM HOLD-DOWN CLIP DETAIL
(Front Panel Removed for Clarity)
Rear Clips
Front Clips
End Clips
1/4" Self-Drilling
Screws Through
#8 Self-Drilling
Clip nto Unit Top
Screws Through
(Typical Front/Rear)
Clip, Unit Duct
Collar and Plenum
All clips and fasteners are required
Panel Flange
to maintain IBC certification of conformity
(Typical All Locations
PLENUM HOLD-DOWN CLIP DIMENSIONS
A
B
B
B
D
DPN001803
Pg. 5, Rev. 3
C
Clips Required
Approximate Location, In. (mm)
Model Number
End
Front/Rear
Total
A
B
C
D
CW026, CW038, CW041
2
2
8
7.4 (188)
31.2 (792)
6.5 (165)
19.0 (483)
CW051, CW060
2
3
10
7.4 (188)
27.6 (701)
6.5 (165)
19.0 (483)
CW076, CW084
2
4
12
7.4 (188)
27.6 (701)
6.5 (165)
19.0 (483)
CW089, CW106, CW114
2
4
12
7.4 (188)
34.4 (874)
6.5 (165)
19.0 (483)
All clips and fasteners are required to maintain IBC certification of conformity.
Source: DPN001803, Pg. 5, Rev. 3
83
Liebert® CW™
Seismic Application—Optional Unit Configuration Required
Figure 66 Seismic duct connection considerations
Seismic
Compensation
Seismic
Compensation
Downflow Ducting Example for Seismic Applications
Seismic
Compensation
Seismic
Compensation
Upflow Ducting Example for Seismic Applications
All ducted units, either rigidly mounted or mounted on vibration isolators, shall be attached to the ducting
system using flexible duct designed for seismic movement. Flexible loops shall be capable of movement in
the ±X, ±Y, and ±Z planes and must completely isolate the equipment from the duct work. Refer to Liebert
installation instructions for ducting requirements. Follow manufacturer’s installation instructions for proper
seismic application of flexible ducts.
DPN001803
Pg. 10, Rev. 3
Liebert® CW™
84
Seismic Application—Optional Unit Configuration Required
Figure 67 Seismic electrical wiring considerations
Field-supplied disconnect switch
when factory-installed unit
disconnect switch is not provided.
Seismic Compensation
Three-phase electrical and low voltage
connections not by Emerson (CW106U & CW114U ONLY).
Factory-installed unit disconnect switch (optional).
Monitoring Panel
Seismic
compensation
UPFLOW MODELS
Three-phase electrical and low-voltage
connections not by Emerson)
DOWNFLOW MODELS
Field-supplied disconnect switch
when factory-installed unit
disconnect switch is not provided.
Factory-installed unit disconnect switch (optional).
Monitoring Panel
Three-phase electrical and low-voltage
connections not by Emerson)
Seismic
Compensation
Flexible conduit and conductors must be provided to allow movement of the unit in three dimensions
during a seismic event. The flexible conduit must have at least one bend between the rigid connection at
the unit cabinet and the connection to rigid conduit or foundation.
Monitoring panel and disconnect are switched on CW106U, CW114U, CW089D, CW106D and CW114D.
85
DPN001803
Pg. 8, Rev. 3
Liebert® CW™
Seismic Application—Optional Unit Configuration Required
Figure 68 Seismic piping considerations
Unit
Anchor Piping
to Unit
Prefabricated Seismic
Compensation Piping
Unit
FLOOR MOUNT
Prefabricated Seismic
Compensation
Piping
Secure pipes
to Floor Stand
Anchor Piping
Anchor to
Foundation
Upflow with floor stand: anchor
to floor stand
Upflow rigid mount: anchor to unit
Downflow: anchor to floor stand
To Unit
Seismic Compensation Device
FLEXIBLE LOOP EXAMPLE
Liebert® CW™
FLOOR STAND MOUNT
Flexible Loops:
All units, either rigidly mounted or mounted on vibration
isolators, shall be attached to the piping system using
flexible loops designed for seismic movement. Flexible
loops shall be capable of movement in the ±X, ±Y, and ±Z planes
and must completely isolate the equipment from the piping.
The loops shall be suitable for an operating pressure and
temperature of the system, refer to Liebert installation
instructions. This includes 1/4" copper humidifier supply,
condensate drainage, and chilled water supply and return.
Follow manufacturer’s installation instructions for proper
seismic application of flexible loops.
DPN001803
Pg. 9, Rev. 3
86
Liebert Air Economizer™ Field Connection Data
9.0
LIEBERT AIR ECONOMIZER™ FIELD CONNECTION DATA
The Liebert Air Economizer is an option for Liebert CW chilled water downflow units, Liebert DS™
downflow units and Liebert Challenger 3000™ downflow units. The Liebert Air Economizer uses cool
outdoor air in mild climates to condition indoor spaces. It is functional only on cooling units with
Liebert iCOM® controls that have been factory-wired and configured to accommodate the Liebert Air
Economizer.
The Liebert Air Economizer is supplied with electrical wiring for connection to the cooling unit,
outdoor air sensors, return air sensors and a temperature-and-humidity-sensing unit (se Figures 72
through 76).
Special firmware is loaded into the primary cooling unit at the factory to permit the primary cooling
unit to control the Liebert Air Economizer.
NOTE
When upgrading the firmware for the primary cooling unit, either a Liebert DS downflow unit
or Liebert CW downflow unit, ensure that the new firmware includes the Liebert Air
Economizer controls. If in doubt, contact your Emerson representative.
9.1
Customer-Supplied Equipment and Ductwork
Installation and operation requires outside-air entry ductwork with louvers, screening and filtration
to prevent intrusion of precipitation, particulates, vermin and unauthorized entry (see Figure 69).
Proper installation also requires a customer-provided powered relief-air discharge to rid the structure
of the outside air drawn in for cooling. The relief-air discharge must be equivalent to the airflow of the
total of all cooling systems equipped with the Liebert Air Economizer.
A flange is provided to attach the Liebert Air Economizer to the outdoor air duct (see Figures 70
and 71).
See the Liebert Air Economizer manual, SL-18845 on the Liebert Web site, www.liebert.com, for more
details.
87
Liebert® CW™
Liebert Air Economizer™ Field Connection Data
Figure 69 Liebert Air Economizer ducting data
Outdoor Relief Opening
(by others)
ROOM RETURN
Return Air Sensors
(field-install
above damper)
RELIEF AIR
Plenum
Outdoor Air Sensors
(field-install inside duct)
Filter
(by others)
OUTSIDE
AIR ENTRY
Liebert
Unit
(Front)
Outdoor Opening
(by others)
Supply Air Limit Thermistor
(field-install under floor)
Outside Air Duct
(by others)
DPN001333
Rev. 0
Liebert® CW™
88
Liebert Air Economizer™ Field Connection Data
Figure 70 Dimensions—Liebert Air Economizer and Liebert CW models CW106D/114D
Typical unit shown.
Refer to dimensions and layout for your unit.
Room Return
Air Damper
TOP VIEW
118" 2996mm Duct Flange
34"
(864mm)
122" (3099mm)
2" (51mm)
1" (25mm)
Duct Collar
112" (2845mm)
30-1/16"
(764mm)
1" (25mm)
Plenum
36"
(914mm)
22"
(559mm)
Outside Air
Damper
1"
(25mm)
76"
(1930mm)
83"
(2108mm)
BACK VIEW
Liebert
CW
SIDE VIEW
Access Panel
for 2" Pre-Filters
12"
(305mm)
FRONT VIEW
(Reference only)
89
DPN001332
Rev. 0
Liebert® CW™
Liebert Air Economizer™ Field Connection Data
Figure 71 Dimensions—Liebert Air Economizer and Liebert CW models CW026D-CW084D
Room Return
Air Damper
TOP VIEW
Duct Flange: A
B
2"
(51mm)
1" (25mm)
C
1" (25mm)
Duct Collar
34"
(864mm)
30-1/16"
(764mm)
Plenum
36"
(914mm)
22" (559mm)
1" (25mm)
Access Panel
for 2" Pre-Filter
Outside Air
Damper
79"
(2007mm)
72"
(1828mm)
SIDE VIEW
BACK VIEW
DPN001411
Rev. 0
FRONT VIEW
(Reference only)
Table 22
Dimensions—Liebert Air Economizer and Liebert CW models CW026D-CW084D
Dimensions, inches (mm)
Liebert CW Model
A
B
C
CW026D, CW038D, CW041D
46 (1168)
50 (1270)
40 (1016)
CS051D, CW060D
70 (1778)
74 (1880)
64 (1626)
CW076D, CW084D
95 (2413)
99 (2515)
89 (2261)
Source: DPN001411, Rev. 0
Liebert® CW™
Liebert CW
90
Liebert Air Economizer™ Field Connection Data
Figure 72 Liebert Air Economizer temperature and humidity sensor wiring
Secure Ring Terminal
(for sensor cable shield)
into back of electric box
(earth ground.)
Connect P67 on the
Control Board to P66
on the Return
Air T/H Sensor using
cable provided.
Both sensors and
cables are shipped
in boxes inside Economizer
C
Return Air
T/H Sensor
Outdoor Air
T/H Sensor
(identified with
outdoor label)
B
D
voltage
ible low n.
s
s
o
p
Both
show
rtments
compa hich applies
w
Identify
Detail D
Front View
Mount Outdoor
Air Sensor inside
of outdoor air
plenum
Connect P67 on the
Return Air T/H Sensor
to P66 on the Outside
Air T/H Sensor using
cable provided.
Mount Return
Air T/H Sensor indoors,
above unit return.
Connect P66 on the
Outdoor Air T/H Sensor
to P67 on the Return
Air T/H Sensor using
cable provided.
Route cable through
customer created hole
in plenum, then seal.
Secure Ring Terminal
(for sensor cable shield)
into metal duct
(earth ground.)
Detail C
Return Air
T/H Sensor
Detail B
Outdoor Air
T/H Sensor
Connect P66 on the
Return Air T/H Sensor
to P67 on the Control
Board using cable provided
DPN001449
Pg. 4, Rev. 2
91
Liebert® CW™
Liebert Air Economizer™ Field Connection Data
Figure 73 Liebert Air Economizer supply limit thermistor wiring and restricted airflow switch adjustment
Return Air
T/HSensor
120” Frame, chilled water
restricted air flow
switch location
CW026-CW084
Restricted Air Flow
Switch Location
P13
Factory
Connected
E
B
P13
Factory
Connected
Uncoil and
extend cable
through holes
provided in bottom
of unit.
voltage
ible low n.
s
s
o
p
Both
show
rtments
compa hich applies
w
Identify
Front View
Uncoil and extend
cable through holes
provided in bottom
of unit.
Secure Supply Air
Thermistor in air flow
(CW026-CW084 unit
location)
Restricted Air Flow
Switch Alarm
Setpoint Knob
Secure supply air thermistor
in air flow (120” frame, chilled
water location.)
Adjustment Instructions:
1. Unit must be running.
2. Turn adjustment knob clockwise
until you hear it trip.
(Unit will also alarm.)
3. Turn back counterclockwise:
- 1/2 turn for standard units
- 1 turn for units with VFD
- or to desired setpoint
Liebert® CW™
Detail E
Restricted Air
Flow Switch
92
DPN001449
Pg. 5, Rev. 2
Liebert Air Economizer™ Field Connection Data
Figure 74 Liebert Air Economizer damper wiring, CW026 - CW084 models
Return Air
T/H Sensor
Outdoor Air
Damper
Return Air
Damper
Outdoor Air
T/H Sensor
(Identified with
Outdoor Label)
Field-Supplied
Outdoor Air Duct
2” Pre-Filters
A
Route cables
through holes
in top of electic
box and into
bottom of
Liebert Air
Economizer.
Liebert
Control Board
Location
Front View
Return Air
Damper Motor
Connection
(Top Motor)
Provide strain relief using
cable tie anchors as shown.
Confirm ties are tightened
to secure cable.
Cable Ties / Anchors
Outdoor Air
Damper Motor
Connection
(Bottom Motor)
Route cable through
loose cable tie on bottom
plate of Liebert Air Economizer.
Tighten to provide strain relief.
Detail A
93
DPN001449
Pg. 3, Rev. 2
Liebert® CW™
Liebert Air Economizer™ Field Connection Data
Figure 75 Liebert Air Economizer damper wiring, CW106 / CW114 Models
Return Air
Damper
Return Air
T/H Sensor
Outdoor Air
Damper
Outdoor Air
T/H Sensor
(identified with
outdoor label)
Field-Supplied
Outdoor Air Duct
A
Route Cables
through holes
in top of electic
box and into
bottom of
Economizer.
120" Frame, Chilled Water
Control Board Location
Front View
Return Air
Damper Motor
Connection
(Top Motor)
Provide strain relief using
cable tie anchors as shown.
Confirm ties are tightened
to secure cable.
Cable Ties / Anchors
Outdoor Air
Damper Motor
Connection
(Bottom Motor)
Route Cable through
loose cable tie on bottom
plate of Economizer.
Tighten to provide
strain relief.
DPN001449
Pg. 1, Rev. 2
Detail A
Liebert® CW™
94
Liebert Air Economizer™ Field Connection Data
Figure 76 Liebert Air Economizer deactivation switch terminals
Return Air
Damper
F
24
Low-voltage customer
connection area, 120”
frame chilled water shown
alternate location in smaller
chilled water units is opposite
end of electic box.
51
Outdoor Air
Damper
Alternate location
on Liebert DS,
Terminals located
inside electric box.
Rear View
Air Economizer
Deactivation Switch
Terminals 24 and 51.
Factory-installed jumper
51
Customer to remove jumper
and connect normally closed
contact to Terminals 24 and 51.
24
Open contact to deactivate
Air Economizer functionality
Main unit will contiue to
run without Air Economizer
feature.
DPN001449
Pg. 6, Rev. 2
Detail F
95
Liebert® CW™
Guide Specifications
10.0 GUIDE SPECIFICATIONS
1.0
GENERAL
1.1
Summary
These specifications describe requirements for a precision environmental control system. The system
shall be designed to maintain temperature conditions in the rooms containing electronic equipment.
The manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation
requirements of the room.
1.2
Design Requirements
The precision cooling system shall be a Liebert, self-contained, factory-assembled unit with downflow
air delivery. The system shall have a total cooling capacity of ____ BTU/H, (kW) with a sensible
cooling capacity of ____ BTU/H (kW) based on an entering air temperature of ____ °F (°C) dry bulb
and ____ °F (°C) wet bulb. The unit is to be supplied with 380V, 3 ph 60Hz electrical service and
65,000A rms Short Circuit Current Rating.
1.3
Submittals
Submittals shall be provided with 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 constructed of heliarc welded tubular steel. It shall be painted using the
autophoretic coating process for maximum corrosion protection. The exterior panels shall be insulated
with a minimum 1 in. (25.4mm), 1.5 lb. (0.68 kg) density fiber insulation. The main front panel shall
have captive quarter-turn fasteners. The main unit color shall be _________. The accent color shall be
_________. The exterior panels shall be powder coated.
2.2
Centrifugal Fans (Choose This or the EC Fans)
The fans shall be the centrifugal type, double-width, double-inlet and shall be factory-balanced as a
completed assembly. The shaft shall be heavy duty steel with self-aligning ball bearings with a
minimum lifespan of 100,000 hours. The fan motor shall be ____hp at 1750 rpm at 60Hz (1450 rpm at
50Hz) and mounted on an adjustable slide base. The drive package shall be two-belt, variable speed,
sized for 200% of the fan motor horsepower. The fans shall be located to draw air over the A-frame coil
to ensure even air distribution and maximum coil performance.
Liebert® CW™
96
Guide Specifications
2.2
Electronically Commutated (EC) Fan (Choose This or centrifugal Fans)
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. Fans
shall be capable of being lowered into the raised floor, with minimum floor height of 24" (610mm).
2.3
• CW026 -CW041: The fan motor shall be 4.15 hp for downflow and upflow orientations with a
maximum operating speed of 1510 rpm.
• CW051 and CW060: The fan motors shall be 3.62 hp for downflow orientation and 4.15 hp for
upflow orientations with a maximum operating speed of 2150 rpm in either orientation.
• CW076 -CW114: The fan motors shall be 4.15 hp for downflow and upflow orientations with a
maximum operating speed of 1510 rpm.
• CW146: The fan motors shall be 4.15 hp for downflow orientations with a maximum operating
speed of 1210 rpm.
• CW181: The fan motors shall be 5.36 hp for downflow orientation with a maximum operating
speed of 1380 rpm.
• CW300: The fan motors shall be 4.15 hp for downflow orientation with a maximum operating
speed of 1200 rpm.
• CW400: The fan motors shall be 5.36 hp for downflow orientation with a maximum operating
speed of 1370 rpm.
Liebert iCOM® Microprocessor Control with Small Graphic Display
The Liebert iCOM unit control shall be factory-set for Intelligent Control, which uses “fuzzy logic” and
“expert systems” methods. Proportional and Tunable PID shall also be user selectable options.
Internal unit component control shall include:
• System Auto Restart—The auto restart feature shall automatically restart the system after a
power failure. Time delay is programmable.
• Sequential Load Activation—On initial startup or restart after power failure, each operational
load shall be sequenced with a minimum of one second delay to minimize total inrush current.
• Hot Water Flush Cycles—Hot water reheat coils and Econ-O-Coils shall be flushed periodically to
prevent a buildup of contaminants.
• Predictive Humidity Control—Shall calculate the moisture content in the room and shall prevent
unnecessary humidification and dehumidification cycles by responding to changes in the dew
point.
• The Liebert iCOM control shall be compatible with Liebert remote monitoring and control
devices. Options shall be available for BMS interface via Modbus, Jbus, BACNet, Profibus and
SNMP.
The Liebert iCOM control processor shall be microprocessor-based with a 128x64 dot matrix graphic
front monitor display and control keys for user inputs mounted in an ergonomic, aesthetically
pleasing housing. The display and housing shall be viewable while the unit panels are open or closed.
The controls shall be menu driven. The display shall be organized into three main sections: User
Menus, Service Menus and Advanced Menus. 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 % 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 within the service
menus. 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. A password shall be required to access the advanced
menus, which include the factory settings and password menus.
97
Liebert® CW™
Guide Specifications
The User Menus Shall be Defined As:
• Active Alarms: Unit memory shall hold the 200 most recent alarms with time and date stamp
for each alarm.
• Event Log: Unit memory shall hold the 400 most recent events with ID number, time and date
stamp for each event.
• Graphic Data View: Eight graphic records shall be available: return air temperature, return air
humidity, supply air temperature, outdoor temperature and four custom graphs.
• Unit View: Status Overview: Simple or Graphical “Unit View” summary displays shall include
temperature and humidity values, active functions (and percent of operation) and any alarms of
the host unit.
• Total Run Hours: Menu shall display cumulative component operating hours for major
components including fan motor, humidifier and reheat.
• Various Sensors: Menu shall allow setup and display of optional custom sensors. The control
shall include four customer accessible analog inputs for sensors provided by others. 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, if desired. 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.
• Display Setup: Customer shall select the desired grouping of display languages at the time of
the order from the following choices:
• Group 1: English, French, Italian, Spanish, German
• Group 2: English, Russian, Greek
• Group 3: English, Japanese, Chinese, Arabic
• Service Contacts: Menu shall allow display of local service contact name and phone number.
The Service Menus Shall be Defined As:
• Setpoints: Menu shall allow setpoints within the following ranges:
• Temperature Setpoint 65-85ºF (18-29ºC)*
• Temperature Sensitivity +1-10ºF (0.6-5.6ºC)
• Humidity Setpoint 20-80% RH*
• Humidity Sensitivity 1-30% RH
• High Temperature Alarm 35-90ºF (2-32ºC)
• Low Temperature Alarm 35-90ºF (2-32ºC)
• High Humidity Alarm 15-85% RH
• Low Humidity Alarm 15-85% RH
* The microprocessor may be set within these ranges, however, the unit may not be able to control
to extreme combinations of temperature and humidity.
• Standby Settings/Lead-Lag: Menu shall allow planned rotation or emergency rotation of
operating and standby units.
• Timers/Sleep Mode: Menu shall allow various customer settings for turning on/off unit.
• Alarm Setup: Menu shall allow customer settings for alarm notification (audible/local/remote).
The following alarms shall be available:
• High Temperature
• Low Temperature
• High Humidity
• Low Humidity
• Main Fan Overload (Optional)
• Humidifier Problem
• Change Filter
• Fan Failure
• Unit Off
• Audible Alarm: The audible alarm shall annunciate any alarm that is enabled by the operator.
• Common Alarm: A programmable common alarm shall be provided to interface user selected
alarms with a remote alarm device.
Liebert® CW™
98
Guide Specifications
• Remote Monitoring: All alarms shall be communicated to the Liebert monitoring system with
the following information: Date and time of occurrence, unit number and present temperature
and humidity.
• Sensor Calibration: Menu shall allow unit sensors to be calibrated with external sensors.
• Maintenance/Wellness Settings: Menu shall allow reporting of potential component problems
before they occur.
• Options Setup: Menu shall provide operation settings for the installed components.
• System/Network Setup: Menu shall allow Unit-to-Unit (U2U) communication and setup for
teamwork modes of operation (up to 32 units).
• Teamwork Modes of Operation: Saves energy by preventing operation of multiple units in
opposing modes.
• Auxiliary Boards: Menu shall allow setup of optional expansion boards.
• 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.
The Advanced Menus Shall be Defined as Follows:
2.3
• Factory Settings: Configuration settings shall be factory-set based on the pre-defined
component operation.
• Change Passwords: Menu shall allow new passwords to be set or changed.
Liebert iCOM® Microprocessor Control With Large Graphic Display (Optional)
The Liebert iCOM unit control with large graphic display shall include all of the features as the
Liebert iCOM with small graphic display, except that it includes a larger graphical display and shall
include the additional features of:
• System View
• Spare Parts List
• Unit Diary
The Liebert iCOM control processor shall be microprocessor based with a 320x240 dot matrix graphic
front monitor display panel and control keys for user inputs mounted in an ergonomic, aesthetically
pleasing housing.
System View - Status Overview: “System View” shall display a summary of operation for the total
number of operating units within a Unit-to-Unit (U2U) configuration.
Spare Parts List: Menu shall include a list of critical spare parts, their quantity and part numbers.
Unit Diary: Menu shall include a free field area within the unit memory where unit history may be
stored for reference.
2.4
Liebert iCOM Wall-Mount Large Graphic Display—Optional
The Liebert iCOM Large Graphic Display Kit shall include an ergonomic, aesthetically pleasing
housing, a 320x240 dot matrix graphic display and a 120V power supply. The Wall-Mount Large
Graphic Display shall be used to allow remote location of a “System View” display and all features of
the Large Graphic User, Service and Advanced menus for use with Liebert iCOM controlled products
connected for Unit-to-Unit (U2U) communications.
2.5
Chilled Water Control Valve
The water circuit shall include a 3-way (2-way) modulating valve. The Liebert iCOM shall position
the valve in response to room conditions. Cooling capacity shall be controlled by bypassing chilled
water around the coil.
2.6
High Pressure Chilled Water Control Valve—Optional
The chilled water circuit shall include a 3-way (2-way) high pressure modulating valve. The valve
shall be designed for up to 400 PSI (2758 kPa) water pressure. CW146 and CW181 models shall be
rated for 400psi, as standard.
99
Liebert® CW™
Guide Specifications
2.7
A-FRAME CHILLED WATER COIL
• The cooling coil shall be of A-frame design with a minimum of ____ sq. ft. (sq.m.) face area, ____
rows deep.
• The water circuit shall be designed to distribute water into the entire coil face area. The coil shall
be supplied with ____ °F (°C) entering water temperature, with a ____ °F (°C) temperature rise.
• The coil shall require ____ GPM (l/s) of chilled water and the pressure drop shall not exceed
____ PSI (kPa). The coil shall be constructed of copper tubes and aluminum fins and shall have a
maximum face velocity of ____ ft. per minute (m/s) at ____ CFM (CMH).
• The entire coil assembly shall be mounted in a stainless steel condensate drain pan.
• The coil shall be controlled by a (3-way) (2-way) modulating control valve. The standard valve
shall be factory-installed and commissioned before shipment.
• The coil end sheets shall be constructed of galvanized G90 steel.
• For models CW106 and CW114, the coil shall be removable from the front or either side of the
unit.
2.8
Optional Components
The computer room environmental control system shall be equipped with the following optional
components.
2.8.1
2.8.1.1
Humidification Options
Infrared Humidifier
• System shall use infrared quartz lamps over stainless steel humidifier pan.
• An automatic water supply system shall continuously maintain water level and an automatic
flush system shall be used to minimize mineral precipitation.
• System shall include a flow control valve permitting operation at water pressure between 15 and
150 PSIG (103 and 1034 kPa).
2.8.1.2
Steam Generating Canister Humidifier
• System shall be housed in a steel enclosure and include replaceable canister with integral fill cup,
fill and drain valves, and high water indicator.
• System shall automatically fill and drain and maintain required water level based on a
conductivity of 200-500 micro-ohms as required for optimum operation.
This option is available as standard on units with centrifugal blowers only. Consult your Emerson
representative for use with EC fans.
2.8.1.3
Steam Grid Humidification
• An “Armstrong” steam separator type with internal drying chamber and steam jacketed stainless
steel distribution manifold shall be provided.
• Complete system shall include pre-piped solenoid control valve, inverted bucket steam trap and
cleanable Y-strainer.
This option is available as standard on units with centrifugal fans only. Consult your Emerson
representative for use with EC fans.
2.8.2
2.8.2.1
Reheat Options
Electric Reheat
• An electric low watt density reheat element of rugged stainless steel finned tubular construction
shall be provide three stages of nonionizing reheat with maximum sheath temperatures below
420 °F (215.5 °C).
2.8.2.2
Hot Water Reheat
• A hot water Reheat system shall be factory piped with a two-way modulating control valve
• and cleanable Y-strainer.
• The reheat coil is of copper tube and aluminum fin construction.
This option is available as standard on units with centrifugal fans only. Consult your Emerson
representative for use with EC fans.
Liebert® CW™
100
Guide Specifications
2.8.2.3
Steam Reheat
• A steam reheat system shall be factory piped with a two-way modulating control valve and
cleanable Y-strainer.
• A float and thermostatic (F&T) steam trap shall be factory supplied for field installation.
• Reheat coil shall be of copper tube and aluminum fin construction.
This option is available as standard on units with centrifugal fans only. Consult your Emerson
representative for use with EC fans.
2.8.3
Disconnect Switch (Choose One of the Options Below)
• The unit shall be supplied without a unit-mounted disconnect switch.
• The unit shall be supplied with a non-locking manual disconnect switch mounted in the
high-voltage section of the electrical panel. The switch shall be accessible with the door closed.
• The unit shall be supplied with a locking manual disconnect switch mounted in the high-voltage
section of the electrical panel. The switch shall be accessible with the door closed.
• The unit shall be supplied with dual-locking manual disconnect switches with an automatic,
reversing starter mounted in the high-voltage section of the electrical panel. The switches shall be
accessible with the door closed.
• The unit shall be supplied with dual, non-locking manual disconnect switches with an automatic,
reversing starter mounted in the high-voltage section of the electrical panel. The switches shall be
accessible with the door closed.
2.8.4
Condensate Pump, Dual Float
The pump shall have capacity of 6 GPM (23 l/m) at 20 ft. head (58 kPa). (Consult your Emerson
representative for 200V or 230V, 50Hz applications). The pump is complete with integral dual float
switch, pump, motor assembly and reservoir. The secondary float shall send a signal to the local
alarm and shut down the unit upon a high water condition. The unit is shipped loose for field
installation on Chilled Water units that are upflow with bottom return. The unit is also shipped loose
for under floor field installation on CW026-CW060 units with EC fans.
2.8.5
Floor Stand
The floor stand shall be constructed of a heliarc-welded tubular steel frame. The floor stand shall
have adjustable legs with vibration isolation pads. The floor stand shall be a minimum of 24 inches
(610mm) high for units with EC fans to facilitate ease of lowering fan into operating position below
the raised floor.
2.8.6
Liebert SiteScan® Site Monitoring System
Provide a Liebert SiteScan monitor system with the Liebert CW. The Liebert SiteScan shall have the
capability to monitor and change (at the user direction) the temperature setpoints and sensitivities of
each unit. The printer shall provide the user with chronological alarm information. It shall also be
capable of being programmed to print out environmental conditions or operating modes at each unit.
3.0
EXECUTION
3.1
Installation of Precision Air Conditioning Units
3.1.1
General
The user shall install precision air conditioning units in accordance with manufacturer’s installation
instructions. Install units plumb and level, firmly anchored in locations indicated and maintain
manufacturer's recommended clearances.
3.1.2
Electrical Wiring
The user shall install and connect electrical devices furnished by manufacturer but not specified to be
factory-mounted. Furnish copy of manufacturer's electrical connection diagram submittal to electrical
contractor.
101
Liebert® CW™
Guide Specifications
3.1.3
Piping Connections
The user shall 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.
3.1.4
Field Quality Control
The user shall install startup Precision Cooling units in accordance with manufacturer’s startup
instructions. Test controls and demonstrate compliance with requirements.
Liebert® CW™
102
Ensuring The High Availability
Of Mission-Critical Data And Applications.
Emerson Network Power, a business of Emerson (NYSE:EMR),
is the global leader in enabling Business-Critical Continuity™
from grid to chip for telecommunication networks, data centers,
health care and industrial facilities. Emerson Network Power
provides innovative solutions and expertise in areas including
AC and DC power and precision cooling systems, embedded
computing and power, integrated racks and enclosures,
power switching and controls, infrastructure management,
and connectivity. All solutions are supported globally by local
Emerson Network Power service technicians. Liebert AC power,
precision cooling and monitoring products and services
from Emerson Network Power deliver Efficiency Without
Compromise™ by helping customers optimize their data center
infrastructure to reduce costs and deliver high availability.
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
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
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.
© 2010 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.
SL-18056_REV6_11-13
Emerson Network Power.
The global leader in enabling Business-Critical Continuity™
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