sm
Water-to-Water Heat Pump
Product Data Catalog
for R-410A or R-134a Refrigerant
For Modules:
MS010XN-410A, MS015XN-410A, MS020XN-410A, MS030XN-410A, MS050XN-410A, MS070XN-410A
MS010AN-134a, MS015AN-134a, MS020AN-134a, MS030AN-134a, MS050AN-134a, MS070AN-134a
Table of Contents
Product Introduction......................................................................................................................... 3
Chiller Options................................................................................................................................... 5
General Data..................................................................................................................................... 9
Performance Data for R410A Refrigerant.......................................................................................... 10
Performance Data for R134a Refrigerant.......................................................................................... 16
Electrical Data................................................................................................................................. 18
Controller Schematics...................................................................................................................... 20
Sample Piping Schematics................................................................................................................ 21
Mechanical Specifications................................................................................................................ 22
Model Number Nomenclature
Existing
MS
50
New
MS
X
050
1
X
H
N
1
W
1
H
0
R-410A
1
R
0
A
A
-410A
Refrigerant
Condenser6
Evaporator5
AHRI Version - if applicable
Application4
Voltage3
Configuration2
Module Number (1 - single, 2 - multiple)
AHRI Certified (C - certified, N - Not certified)
Compressor Type1
Module Nominal Capacity (10 - 160 tons)
Series
1 B: Bristol, C: Trane Cornerstone, R: Bitzer Screw, S: Trane Scroll, T: Danfoss Turbocor, Z: Copeland scroll (old elec), X: Copeland Scroll (ZP), A: Copeland Scroll (ZR)
2 1- Standard, 2- Total access, 3 - Evap extended headers, 4 - Cond extended headers, 5 - Both extended headers, V - others
3 A - 208/3/60, L - 230/3/60, H - 460/3/60, C - 575/3/60, D - 200/3/50, E - 400/3/50, F - 380/3/60, S - 220/230/1/60, V - other
4 C - Single module temp controller, A-Air Cooled split, D - Cond unit, F - Fluid cooler (high temp),H - Heat recovery, R - Heat pump, W - Water cooled
5 A - Brazed SS, B - Brazed SMO, C- S&T copper, D - S&T cu-Ni, V - Other
6 A - Brazed SS, B - Brazed SMO, C- S&T copper, D - S&T cu-Ni, E - Double wall brazed, V - Other
2
Water-to-Water Heat Pump
PRODUCT INTRODUCTION
Applications for a Multistack Heat Pump
•Laundry Water Heating
•Swimming Pool Heating
•Process Heating and Cooling
•Domestic Hot Water
•Building Heat
•Reheat Coils
•VAV Reheat
Typical Buildings for Heat Pump Applications
•Hotels and Motels
•Resorts
•Recreational Facilities
•Schools
•Hospitals
•Nursing Homes
•Process Cooling and Heating
•Data Centers
•Call Centers
•Campus Cooling and Heating Plants
Benefits
•Reduced CO2 emissions
•Easy retrofit for any mechanical room
•Payback in less than three years typically
•More efficient than a gas boiler
−− Heating COP with R-410A can exceed 5.0
−− Heating COP with R-134a can exceed 3.0
−− Cooling EER with R-410A can exceed 15.0
−− Cooling EER with R-134a can exceed 7.0
•Low load efficiency
•Apply for Leed points
•ASHRAE 15 / B-52 compliant without monitoring or ventilation
equipment.
Easy To Install
•Compact modules fit through standard doorways and into elevators
•Modules interconnect easily and quickly
•All refrigeration systems are factory charged and run tested
•Single point power up to 500 MCA
Programmable Logic Controller (PLC) System
•Manual switch allows redundancy control as each module has a
processor allowing it to run even if master controller fails
•Display at each module
•Remote display option
•Optional BAS Interface
Design Flexibility
•Wide array of module combinations
•Install only the capacity required at the time
•Variable or constant flow options
Simple To Service
•Service can often be performed on a convenient, non-emergency basis
•Most components are standard, off the shelf design
•Able to service one module while system is in operation
Side View
Load Water
Lockable High Voltage Circuit Breaker
Bussbar Duct
Low Voltage Controls
Compressors
Features
•Independent refrigerant circuits
Highly Dependable
•Multiple independent systems for redundancy
•Comprehensive computer monitoring of operations (optional)
•Automatic diagnostic recording of fault conditions
•Rotates lead compressor every 24 hours
Simple To Operate
•Large LCD screen displays information in plain English
•Simple keypad provides control of unit operations
Source/Sink Water
3
Water-to-Water Heat Pump
CHILLER OPTIONS
*Standardized drawing of sample customer installation
Standard Modules (Constant Flow Design)
Dimensions
Standard
32”
Width (A)
49 1/8”
Depth (B)
64”
Height (C)
4
Water-to-Water Heat Pump
CHILLER OPTIONS, Cont’d
*Standardized drawing of sample customer installation
Extended Headers
Dimensions
Variable Flow Design for Load and Source/Sink–
Extended Headers on Load Side and Source/Sink Side
SOURCE/SINK
LOAD
32”
Width (A)
78 1/8”
Depth (B)
64”
Height (C)
5
Water-to-Water Heat Pump
CHILLER OPTIONS, Cont’d
*Standardized drawing of sample customer installation
Variable Flow Design for Load Water
Constant Flow for Source/Sink
Extended Headers on Load Side
SOURCE/SINK
LOAD
Dimensions
Extended Headers (Load)
32”
Width (A)
63 5/8”
Depth (B)
64”
Height (C)
6
Water-to-Water Heat Pump
CHILLER OPTIONS, Cont’d
*Standardized drawing of sample customer installation
Extended Headers (Source/Sink)
Dimensions
Variable Flow Design for Source/Sink Water
Constant Flow for Load Water
Extended Headers on Source/Sink Side
SOURCE/SINK
LOAD
32”
Width (A)
63 5/8”
Depth (B)
64”
Height (C)
7
Water-to-Water Heat Pump
CHILLER OPTIONS, Cont’d
Variable Flow* or Constant Flow for Source/Sink
and/or Load Water Total Access Design
Standardized drawing of sample customer installation
*Required optional actuators.
Width (A)
56”
56”
Depth (B)
67”
67”
Height (C)
Dimensions
34”
67”
32”
56”
MS050X
34”
MS010X, MS015X, MS020X, MS030X
MS070X
8
Water-to-Water Heat Pump
GENERAL DATA
MS010*
Compressor Type
Scroll
General Data Table
MS015*
MS020*
MS030*
Scroll
Dry Weight (lbs. each)
Normal Capacity (tons each)
Quantity
Oil Charge (pints)
Scroll
89
135
5
8.5
2
2
3.5
6.9
Brazed Plate Brazed Plate
Evaporator (Brazed Plate)
Weight (lbs. each)
80
80
Water Storage (gallons each)
1.9
1.9
Circuit Configuration
Dual
Dual
Quantity
1
1
Header System (gallons leaving water)
6
6
Brazed Plate Brazed Plate
Condenser
Weight (lbs. each)
90
90
Water Storage (gal. each)
2.4
2.4
Circuit Configuration
Dual
Dual
Quantity
1
1
Header System (gallons entering water)
6
6
R410A/R134a R410A/R134a
Refrigerant Type
Charge (lbs./circuit)
6.5
6.5
Number of Circuits
2
2
1110
1200
Operating Weight (lbs.)
950
1040
Shipping Weight (lbs.)
135
10
2
6.9
Brazed Plate
80
1.9
Dual
1
6
Brazed Plate
90
2.4
Dual
1
6
R410A/R134a
8
2
1200
1040
Scroll
MS050*
MS070*
MS085*
Scroll
Scroll
Scroll
146
353
390
15
25
32
2
2
2
6.9
14.4
13.3
Brazed Plate Brazed Plate Brazed Plate
105
180
243
2.9
4.8
7.3
Dual
Dual
Dual
1
1
1
6
6
6
Brazed Plate Brazed Plate Brazed Plate
135
220
313
4.1
6.6
10.1
Dual
Dual
Dual
1
1
1
6
6
6
R410A/R134a R410A/R134a R410A/R134a
12
18
24
2
2
2
1625
2000
2200
1450
1730
1900
Call Factory
Brazed Plate
Call Factory
Brazed Plate
Call Factory
R410A/R134a
Call Factory
Call Factory
Call Factory
*Covers both R-410A and R-134a refrigerants.
Multistack Glycol Solution Information
Low Temperature Operation with Glycol
In chilled water systems where water temperatures of less than 40°F and ambient temperatures of 32° F are likely to occur, it is necessary to add a glycol-based heat transfer fluid to
the system. Both Ethylene and Propylene are available and they offer the same basic freeze and corrosion protection although there are performance differences in the solutions.
Note:
1. Ethylene and propylene glycol ratings are outside the scope of AHRI Standard 550/590 Certifications.
2. The effect of glycol in the condenser is negligible as it tends to mirror the properties of water as its temperature increases. No emphasis on derate on condenser capacity with
glycol is necessary in the selection process.
ETHYLENE GLYCOL
Ethylene %
10
20
30
40
50
Freeze Point
°F
°C
26
18
7
-7
-28
-3.3
-7.8
-13.9
-21.7
-33.3
Capacity
Power
Flow
Pressure Drop
0.996
0.986
0.978
0.966
0.955
0.999
0.998
0.996
0.993
0.991
1.035
1.06
1.092
1.131
1.182
1.096
1.219
1.352
1.53
1.751
PROPYLENE GLYCOL
Propylene %
10
20
30
40
50
Freeze Point
°F
°C
26
19
9
-5
-27
-3
-7
-13
-21
-33
Capacity
Power
Flow
Pressure Drop
0.987
0.975
0.962
0.946
0.929
0.992
0.985
0.978
0.971
0.965
1.01
1.028
1.05
1.078
1.116
1.068
1.147
1.248
1.366
1.481
9
Water-to-Water Heat Pump
HEATING PERFORMANCE: R-410A REFRIGERANT
MS010XN
Leaving Source
Water °F
30°F
35°F
40°F
45°F
50°F
55°F
MS015XN
Leaving Source
Water °F
30°F
35°F
40°F
45°F
50°F
55°F
MS020XN
Leaving Source
Water °F
30°F
35°F
40°F
45°F
50°F
55°F
MS030XN
Leaving Source
Water °F
30°F
35°F
40°F
45°F
50°F
55°F
Power
(kW)
11.5
11.3
11.2
11.1
11.0
10.9
Power
(kW)
15.8
15.8
15.8
15.8
15.9
15.9
Power
(kW)
20.8
20.7
20.6
20.6
20.6
20.6
Power
(kW)
29.8
29.9
30.0
30.2
30.4
30.7
110°F
Heat
(MBH)
116.7
126.9
137.7
149.4
161.9
175.6
110°F
Heat
(MBH)
173.4
187.1
202.1
218.5
236.3
255.9
110°F
Heat
(MBH)
229.6
249.6
271.1
294.7
319.7
346.7
110°F
Heat
(MBH)
343.3
371.9
402.9
436.5
472.7
511.8
LEAVING HOT WATER
Heat
COP
3.0
3.3
3.6
3.9
4.3
4.7
Heat
COP
3.2
3.5
3.7
4.0
4.4
4.7
Heat
COP
3.2
3.5
3.8
4.2
4.5
4.9
Heat
COP
3.4
3.6
3.9
4.2
4.6
4.9
120°F
Power Heat
(kW) (MBH)
12.8 112.3
12.7 122.0
12.6 132.4
12.4 143.5
12.3 155.4
12.2 168.3
120°F
Power Heat
(kW) (MBH)
17.7 170.2
17.7 183.1
17.7 197.1
17.7 212.3
17.7 228.9
120°F
Power Heat
(kW) (MBH)
23.8 223.9
23.6 242.0
23.5 262.0
23.4 283.6
23.3 307.3
23.3 332.7
120°F
Power Heat
(kW) (MBH)
33.3 334.4
33.4 360.9
33.5 389.8
33.7 420.9
33.8 454.7
34.1 491.3
Heat
COP
2.6
2.8
3.1
3.4
3.7
4.1
Heat
COP
2.8
3.0
3.3
3.5
3.8
Heat
COP
2.8
3.0
3.3
3.6
3.9
4.2
Heat
COP
2.9
3.2
3.4
3.7
3.9
4.2
125°F
Power Heat
(kW) (MBH)
13.5 110.0
13.4 119.6
13.3 129.7
13.2 140.5
13.0 152.0
12.9 164.5
125°F
Power Heat
(kW) (MBH)
18.8 168.6
18.8 181.1
18.8 194.6
18.8 209.3
18.8 225.2
125°F
Power Heat
(kW) (MBH)
25.5 221.8
25.3 238.7
25.1 257.7
25.0 278.4
24.9 301.0
24.8 325.6
125°F
Power Heat
(kW) (MBH)
35.3 330.0
37.5 350.2
35.5 383.2
35.6 413.3
35.8 445.7
36.0 480.7
Heat
COP
2.4
2.6
2.9
3.1
3.4
3.7
Heat
COP
2.6
2.8
3.0
3.3
3.5
Heat
COP
2.5
2.8
3.0
3.3
3.5
3.8
Heat
COP
2.7
2.9
3.2
3.4
3.7
3.9
130°F
Power Heat
(kW) (MBH)
14.3 107.7
14.2 117.1
14.1 126.9
14.0 137.5
13.8 148.7
13.7 160.8
130°F
Power Heat
(kW) (MBH)
19.9 167.0
19.9 179.1
19.9 192.2
19.9 206.3
19.9 221.7
130°F
Power Heat
(kW) (MBH)
27.3 220.0
27.0 236.0
26.8 253.6
26.6 273.3
26.5 294.9
26.4 318.4
130°F
Power Heat
(kW) (MBH)
37.4 325.9
37.5 350.2
37.6
37.6
37.7 405.4
35.8 436.6
38.0 470.3
Heat
COP
2.2
2.4
2.6
2.9
3.2
3.4
Heat
COP
2.5
2.6
2.8
3.0
3.3
Heat
COP
2.4
2.6
2.8
3.0
3.3
3.5
Heat
COP
2.6
2.7
2.9
3.2
3.4
3.6
135°F
Power Heat
(kW) (MBH)
15.2 105.4
15.1 114.5
15.0 124.2
14.8 134.4
14.7 145.3
14.5 157.0
135°F
Power Heat
(kW) (MBH)
21.2 165.3
21.2 177.0
21.2 189.7
21.1 203.4
21.1 218.2
135°F
Power Heat
(kW) (MBH)
29.3 218.9
28.9 233.5
28.6 250.0
28.4 268.4
28.3 288.9
28.1 311.3
135°F
Power Heat
(kW) (MBH)
39.6 321.8
39.7 345.0
39.8 370.2
39.9 397.7
40.0 427.4
40.2 459.7
Heat
COP
2.0
2.2
2.4
2.7
2.9
3.2
Heat
COP
2.3
2.5
2.6
2.8
3.0
Heat
COP
2.2
2.4
2.6
2.8
3.0
3.2
Heat
COP
2.4
2.5
2.7
2.9
3.1
3.4
For non-published performance ranges, please contact Multistack.
10
Water-to-Water Heat Pump
HEATING PERFORMANCE: R-410A REFRIGERANT
MS050XN
Leaving Source Power
Water °F
(kW)
30°F
46.1
35°F
46.3
40°F
46.6
45°F
46.9
50°F
47.2
55°F
47.5
MS070XN
Leaving Source Power
Water °F
(kW)
30°F
59.7
35°F
60.0
40°F
60.4
45°F
60.8
50°F
61.3
55°F
61.9
MS085XN
Leaving Source Power
Water °F
(kW)
30°F
35°F
40°F
45°F
50°F
55°F
110°F
Heat
(MBH)
558.1
605.5
656.7
712.5
773.4
839.4
110°F
Heat
(MBH)
729.8
792.5
859.9
932.8
1011.5
1096.0
110°F
Heat
(MBH)
LEAVING HOT WATER
Heat
COP
3.6
3.8
4.1
4.5
4.8
5.2
Heat
COP
3.6
3.9
4.2
4.5
4.8
5.2
Heat
COP
120°F
Power Heat
(kW) (MBH)
51.4 544.6
51.7 588.6
52.0 636.4
52.3 688.5
52.6 745.1
52.8 806.4
120°F
Power Heat
(kW) (MBH)
66.8 711.2
67.1 770.2
67.4 833.5
67.8 901.8
68.3 974.9
68.9 1053.2
120°F
Power Heat
(kW) (MBH)
Heat
COP
3.1
3.3
3.6
3.9
4.2
4.5
Heat
COP
3.1
3.4
3.6
3.9
4.2
4.5
Heat
COP
125°F
Power Heat
(kW) (MBH)
54.3 538.3
54.7 580.7
55.0 626.5
55.2 676.7
55.5 731.2
55.8 790.3
125°F
Power Heat
(kW) (MBH)
70.7 702.3
71.0 759.4
71.3 820.7
71.7 886.2
72.2 956.8
72.7 1032.4
125°F
Power Heat
(kW) (MBH)
Heat
COP
2.9
3.1
3.3
3.6
3.9
4.2
Heat
COP
2.9
3.1
3.4
3.6
3.9
4.2
Heat
COP
130°F
Power Heat
(kW) (MBH)
57.4 532.2
57.8 572.8
58.1 617.1
58.4 665.2
58.7 717.6
58.9 774.6
130°F
Power Heat
(kW) (MBH)
74.8 693.3
75.1 748.4
75.4 807.5
75.8 870.8
76.3 938.9
76.8 1011.7
130°F
Power Heat
(kW) (MBH)
Heat
COP
2.7
2.9
3.1
3.3
3.6
3.9
Heat
COP
2.7
2.9
3.1
3.4
3.6
3.9
Heat
COP
135°F
Power Heat
(kW) (MBH)
60.6 526.6
61.0 565.5
61.4 607.8
61.7 653.9
62.0 704.0
62.3 758.7
135°F
Power Heat
(kW) (MBH)
79.4
79.8
80.2
80.6
81.2
737.7
794.5
855.5
921.1
990.6
135°F
Power Heat
(kW) (MBH)
Heat
COP
2.5
2.7
2.9
3.1
3.3
3.6
Heat
COP
2.7
2.9
3.1
3.3
3.6
Heat
COP
y
r
o
t
c
a
Call F
For non-published performance ranges, please contact Multistack.
11
Water-to-Water Heat Pump
COOLING PERFORMANCE: R-410A REFRIGERANT
MS010XN
Leaving Source
Water °F
75°F
80°F
85°F
90°F
95°F
105°F
MS015XN
Leaving Source
Water °F
75°F
80°F
85°F
90°F
95°F
105°F
MS020XN
Leaving Source
Water °F
75°F
80°F
85°F
90°F
95°F
105°F
MS030XN
Leaving Source
Water °F
75°F
80°F
85°F
90°F
95°F
105°F
Power
(kW)
7.0
7.4
7.8
8.3
8.7
9.7
Power
(kW)
10.3
10.8
11.4
12.1
12.7
14.2
Power
(kW)
13.7
14.2
14.8
15.5
16.3
18.3
Power
(kW)
20.4
21.3
22.2
23.3
24.4
27.0
42°F
Cool
(Tons)
11.6
11.3
11.1
10.8
10.5
9.8
42°F
Cool
(Tons)
16.9
16.4
15.9
15.4
15.0
14.1
42°F
Cool
(Tons)
23.0
22.5
22.0
21.4
20.8
22.7
42°F
Cool
(Tons)
33.6
32.9
32.1
31.3
30.5
28.7
LEAVING CHILLED WATER
Cool
(EER)
19.9
18.4
17.0
15.7
14.5
12.2
Power
(kW)
7.0
7.4
7.8
8.2
8.7
9.7
Cool
(EER)
19.7
18.1
16.7
15.4
14.1
11.9
Power
(kW)
10.3
10.9
11.5
12.1
12.8
14.2
Cool
(EER)
20.2
19.1
17.9
16.6
15.3
14.9
Power
(kW)
13.7
14.2
14.8
15.5
16.3
18.2
Cool
(EER)
19.8
18.6
17.4
16.1
15.0
12.7
Power
(kW)
20.5
21.4
22.3
23.4
24.5
27.1
44°F
Cool
(Tons)
12.0
11.8
11.5
11.2
10.9
10.3
44°F
Cool
(Tons)
17.6
17.1
16.6
16.1
15.6
14.7
44°F
Cool
(Tons)
23.8
23.3
22.8
22.2
21.6
20.2
44°F
Cool
(Tons)
34.9
34.1
33.4
32.5
31.7
29.8
Cool
(EER)
20.7
19.2
17.7
16.4
15.1
12.7
Cool
(EER)
20.5
18.8
17.3
16.0
14.7
12.4
Cool
(EER)
20.9
19.7
18.5
17.2
15.9
13.3
Cool
(EER)
20.4
19.2
17.9
16.7
15.5
13.2
46°F
Power Cool
(kW) (Tons)
7.0
12.5
7.4
12.3
7.8
12.0
8.2
11.7
8.6
11.4
9.6
10.7
46°F
Power Cool
(kW) (Tons)
10.3
18.3
10.9
17.7
11.5
17.2
12.1
16.7
12.8
16.2
14.2
15.2
46°F
Power Cool
(kW) (Tons)
13.7
24.6
14.2
24.2
14.8
23.6
15.5
23.0
16.3
22.4
18.3
21.0
46°F
Power Cool
(kW) (Tons)
20.7
36.2
21.5
35.4
22.5
34.6
23.5
33.8
24.7
32.9
27.2
31.0
Cool
(EER)
21.6
20.0
18.5
17.1
15.8
13.3
Cool
(EER)
21.3
19.6
18.0
16.7
15.3
12.9
Cool
(EER)
21.5
20.4
19.1
17.8
16.5
13.8
Cool
(EER)
21.0
19.7
18.5
17.2
16.0
13.7
48°F
Power Cool
(kW) (Tons)
6.9
13
7.3
12.7
7.7
12.4
8.2
12.1
8.6
11.8
9.6
11.1
48°F
Power Cool
(kW) (Tons)
10.3
19.0
10.9
18.5
11.5
17.9
12.1
17.4
12.8
16.9
14.2
15.9
48°F
Power Cool
(kW) (Tons)
13.7
25.5
14.2
25.0
14.8
24.5
15.5
23.9
16.3
23.3
18.3
21.8
48°F
Power Cool
(kW) (Tons)
20.9
37.5
21.7
36.7
22.6
35.9
23.7
35.1
24.8
34.1
27.3
32.2
Cool
(EER)
22.5
20.9
19.3
17.9
16.5
13.9
Cool
(EER)
22.1
20.3
18.7
17.2
15.9
13.4
Cool
(EER)
22.2
21.1
19.8
18.4
17.1
14.3
Cool
(EER)
21.6
20.3
19.0
17.8
16.5
14.1
50°F
Power Cool
(kW) (Tons)
6.9
13.5
7.3
13.2
7.7
12.9
8.1
12.6
8.6
12.3
9.5
11.6
50°F
Power Cool
(kW) (Tons)
10.3
19.8
10.9
19.2
11.5
18.6
12.1
18.1
12.8
17.5
14.2
16.5
50°F
Power Cool
(kW) (Tons)
13.8
26.3
14.3
25.9
14.9
25.3
15.6
24.8
16.4
24.1
18.3
22.7
50°F
Power Cool
(kW) (Tons)
21.1
38.9
21.9
38.1
22.8
37.3
23.8
36.4
24.9
35.4
27.4
33.4
Cool
(EER)
23.4
21.7
20.2
18.7
17.2
14.6
Cool
(EER)
23.0
21.1
19.4
17.9
16.5
13.9
Cool
(EER)
22.9
21.7
20.4
19.1
17.7
14.9
Cool
(EER)
22.1
20.9
19.6
18.3
17.7
14.6
For non-published performance ranges, please contact Multistack.
12
Water-to-Water Heat Pump
COOLING PERFORMANCE: R-410A REFRIGERANT
MS050XN
Leaving Source Power
Water °F
(kW)
75°F
32.6
80°F
34.1
85°F
35.7
90°F
37.5
95°F
39.5
105°F
43.8
MS070XN
Leaving Source Power
Water °F
(kW)
75°F
42.2
80°F
44.1
85°F
46.3
90°F
48.6
95°F
51.1
105°F
53.8
MS085XN
Leaving Source Power
Water °F
(kW)
75°F
80°F
85°F
90°F
95°F
105°F
42°F
Cool
(Tons)
54.6
53.3
51.9
50.5
49.1
46.0
42°F
Cool
(Tons)
71.4
69.7
67.9
66.1
64.3
62.4
42°F
Cool
(Tons)
LEAVING CHILLED WATER
Cool
(EER)
20.1
18.8
17.4
16.1
14.9
12.6
Cool
(EER)
20.3
18.9
17.6
16.3
15.1
13.9
Cool
(EER)
44°F
Power Cool
(kW) (Tons)
32.8
56.8
34.3
55.4
35.9
54.0
37.7
52.5
39.6
51.0
43.9
47.9
44°F
Power Cool
(kW) (Tons)
42.5
74.2
44.4
72.4
46.5
70.6
48.8
68.8
51.3
66.8
54.0
64.9
44°F
Power Cool
(kW) (Tons)
Cool
(EER)
20.8
19.4
18.0
16.7
15.5
13.1
Cool
(EER)
21.0
19.6
18.2
16.9
15.6
14.4
Cool
(EER)
46°F
Power Cool
(kW) (Tons)
33.0
59.0
34.4
57.6
36.1
56.1
37.8
54.6
39.7
53.1
44.1
49.8
46°F
Power Cool
(kW) (Tons)
42.8
77.1
44.7
75.3
46.8
73.4
49.1
71.4
51.5
69.5
54.2
67.4
46°F
Power Cool
(kW) (Tons)
Cool
(EER)
21.5
20.1
18.7
17.3
16.0
13.6
Cool
(EER)
21.6
20.2
18.8
17.5
16.2
14.9
Cool
(EER)
48°F
Power Cool
(kW) (Tons)
33.2
61.3
34.6
59.8
36.2
58.3
38.0
56.7
39.9
55.1
44.2
51.8
48°F
Power Cool
(kW) (Tons)
43.1
80.1
45.0
78.2
47.1
76.2
49.3
74.2
51.8
72.1
54.5
70.0
48°F
Power Cool
(kW) (Tons)
Cool
(EER)
22.2
20.7
19.3
17.9
16.6
14.1
Cool
(EER)
22.3
20.8
19.4
18.1
16.7
15.4
Cool
(EER)
50°F
Power Cool
(kW) (Tons)
33.4
63.7
34.8
62.1
36.4
60.6
38.1
58.9
40.0
57.3
44.3
53.8
50°F
Power Cool
(kW) (Tons)
43.5
83.1
45.3
81.1
47.4
79.1
49.6
77.0
52.0
74.9
54.7
72.7
50°F
Power Cool
(kW) (Tons)
Cool
(EER)
22.9
21.4
20.0
18.6
17.2
14.6
Cool
(EER)
22.9
21.5
20.0
18.6
17.3
15.9
Cool
(EER)
y
r
o
t
c
a
Call F
For non-published performance ranges, please contact Multistack.
13
Water-to-Water Heat Pump
HEATING PERFORMANCE: R134a REFRIGERANT
MS010AN
Leaving Source
Water °F
55°F
53°F
51°F
49°F
47°F
45°F
MS015AN
Leaving Source
Water °F
55°F
53°F
51°F
49°F
47°F
45°F
MS020AN
Leaving Source
Water °F
55°F
53°F
51°F
49°F
47°F
45°F
MS030AN
Leaving Source
Water °F
55°F
53°F
51°F
49°F
47°F
45°F
LEAVING HOT WATER
Power
(kW)
9.8
9.8
9.8
9.8
9.7
9.7
Power
(kW)
15.3
15.3
15.3
15.3
15.3
15.3
Power
(kW)
19.9
19.9
19.9
19.8
19.8
19.7
Power
(kW)
25.1
25.1
25.0
25.0
25.0
25.0
140°F
Heat
(MBH)
108.8
105.2
101.8
98.5
95.3
95.3
140°F
Heat
(MBH)
151.1
147.1
143.1
139.3
135.6
135.6
140°F
Heat
(MBH)
197.2
191.2
185.4
179.8
174.4
169.0
140°F
Heat
(MBH)
269.1
260.7
252.4
244.4
236.5
228.7
Heat
COP
3.2
3.1
3.0
3.0
2.9
2.9
Power
(kW)
11.0
11.0
11.0
11.0
11.0
11.0
Heat
COP
2.9
2.8
2.7
2.7
2.6
2.6
Power
(kW)
17.2
17.2
17.2
17.3
17.3
17.3
Heat
COP
2.9
2.8
2.7
2.7
2.6
2.5
Power
(kW)
22.1
22.0
22.0
22.0
21.9
21.9
Heat
COP
3.1
3.0
3.0
2.9
2.8
2.7
Power
(kW)
28.1
28.1
28.1
28.1
28.1
28.0
150°F
Heat
(MBH)
105.9
102.7
99.5
96.5
93.7
93.7
150°F
Heat
(MBH)
146.2
142.4
138.8
135.2
131.8
131.8
150°F
Heat
(MBH)
191.1
185.5
180.2
175.0
170.0
165.0
150°F
Heat
(MBH)
260.3
252.1
244.1
236.3
228.5
221.0
Heat
COP
2.8
2.7
2.7
2.6
2.5
2.5
Heat
COP
2.5
2.4
2.4
2.3
2.2
2.2
Heat
COP
2.5
2.5
2.4
2.3
2.3
2.2
Heat
COP
2.7
2.6
2.5
2.5
2.4
2.3
155°F
Power Heat
(kW) (MBH)
11.7 104.6
11.7 101.5
11.6
98.5
11.6
95.7
11.7
92.9
11.7
90.4
155°F
Power Heat
(kW) (MBH)
18.3 143.6
18.3 140.0
18.3 136.5
18.4 133.2
18.4 129.9
18.4 129.9
155°F
Power Heat
(kW) (MBH)
23.2 188.1
23.2 182.8
23.2 177.7
23.1 172.7
23.1 172.7
23.0 163.2
155°F
Power Heat
(kW) (MBH)
29.8 255.8
29.8 247.7
29.8 239.8
29.7 232.1
29.7 224.4
28.0 221.0
Heat
COP
2.6
2.6
2.5
2.4
2.3
2.3
Heat
COP
2.3
2.2
2.2
2.1
2.1
2.1
Heat
COP
2.4
2.3
2.2
2.2
2.2
2.1
Heat
COP
2.5
2.4
2.4
2.3
2.2
2.3
160°F
Power Heat
(kW) (MBH)
12.4 103.4
12.4 100.4
12.4
97.6
12.4
94.9
12.4
92.3
Heat
COP
2.5
2.4
2.3
2.2
2.2
160°F
Power Heat
(kW) (MBH)
19.5 141.1
19.5 137.7
19.5 134.3
19.5 131.1
19.6 127.9
Heat
COP
2.1
2.1
2.0
2.0
1.9
160°F
Power Heat
(kW) (MBH)
24.4 185.2
24.4 180.1
24.3 175.3
24.3 170.5
24.2 165.9
Heat
COP
2.2
2.2
2.1
2.1
2.0
160°F
Power Heat
(kW) (MBH)
31.6 251.2
31.6 243.3
31.5 235.5
31.5 227.8
31.5 220.2
Heat
COP
2.3
2.3
2.2
2.1
2.0
175°F
Power Heat
(kW) (MBH)
14.7 100.0
14.7
97.5
14.8
95.2
14.9
93.0
Heat
COP
2.0
1.9
1.9
1.8
175°F
Power Heat
(kW) (MBH)
23.5 133.3
23.5 130.3
23.6 127.3
23.6 124.5
Heat
COP
1.7
1.6
1.6
1.5
175°F
Power Heat
(kW) (MBH)
28.3 177.0
28.2 172.7
28.1 168.5
28.1 164.4
Heat
COP
1.8
1.8
1.8
1.7
175°F
Power Heat
(kW) (MBH)
37.6 237.1
37.5 229.4
37.5 221.9
27.5 214.5
Heat
COP
1.8
1.8
1.7
1.7
For non-published performance ranges, please contact Multistack.
14
Water-to-Water Heat Pump
HEATING PERFORMANCE: R134a REFRIGERANT
MS050AN
Leaving Source Power
Water °F
(kW)
55°F
43.3
53°F
43.2
51°F
43.1
49°F
42.9
47°F
42.8
45°F
42.7
MS070AN
Leaving Source Power
Water °F
(kW)
55°F
55.2
53°F
55.1
51°F
54.9
49°F
54.7
47°F
54.6
45°F
54.4
MS085AN
Leaving Source Power
Water °F
(kW)
55°F
53°F
51°F
49°F
47°F
45°F
140°F
Heat
(MBH)
511.4
494.8
478.9
463.5
448.7
434.5
140°F
Heat
(MBH)
662.2
640.6
619.9
599.8
580.6
562.1
140°F
Heat
(MBH)
LEAVING HOT WATER
Heat
COP
3.5
3.4
3.3
3.2
3.1
3.0
Heat
COP
3.5
3.4
3.3
3.2
3.1
3.0
Heat
COP
150°F
Power Heat
(kW) (MBH)
48.5 502.5
48.4 486.9
48.4 472.3
48.3 458.1
48.3 444.5
48.3 431.5
150°F
Power Heat
(kW) (MBH)
61.9 650.1
61.8 630.1
61.7 610.9
61.6 592.4
61.6 574.7
61.6 557.7
150°F
Power Heat
(kW) (MBH)
Heat
COP
3.0
2.9
2.9
2.8
2.7
2.6
Heat
COP
3.1
3.0
2.9
2.8
2.7
2.7
Heat
COP
155°F
Power Heat
(kW) (MBH)
51.5 499.1
51.5 484.4
51.5 470.2
51.5 456.7
51.5 443.8
51.6 431.6
155°F
Power Heat
(kW) (MBH)
65.7 645.5
65.7 626.3
65.7 607.9
65.7 590.3
65.7 573.6
65.8 557.5
155°F
Power Heat
(kW) (MBH)
Heat
COP
2.9
2.8
2.7
2.6
2.5
2.5
Heat
COP
2.9
2.8
2.7
2.6
2.6
2.5
Heat
COP
160°F
Power Heat
(kW) (MBH)
54.9 496.7
54.9 482.6
54.9 469.2
55.0 456.5
55.1 444.3
Heat
COP
2.7
2.6
2.5
2.4
2.4
160°F
Power Heat
(kW) (MBH)
70.0 642.1
70.0 623.8
70.1 606.5
70.2 589.7
70.3 573.7
Heat
COP
2.7
2.6
2.5
2.5
2.4
160°F
Power Heat
(kW) (MBH)
Heat
COP
175°F
Power Heat
(kW) (MBH)
67.1 496.3
67.4 484.7
67.7 473.4
68.1 463.0
Heat
COP
2.2
2.1
2.0
2.0
175°F
Power Heat
(kW) (MBH)
85.7 640.8
86.0 625.4
86.4 610.7
86.8 597.0
Heat
COP
2.2
2.1
2.1
2.0
175°F
Power Heat
(kW) (MBH)
Heat
COP
y
r
o
t
c
ll Fa
Ca
For non-published performance ranges, please contact Multistack.
15
Water-to-Water Heat Pump
COOLING PERFORMANCE: R134a REFRIGERANT
MS010AN
Leaving Source
Water °F
100°F
105°F
110°F
115°F
120°F
125°F
MS015AN
Leaving Source
Water °F
100°F
105°F
110°F
115°F
120°F
125°F
MS020AN
Leaving Source
Water °F
100°F
105°F
110°F
115°F
120°F
125°F
MS030AN
Leaving Source
Water °F
100°F
105°F
110°F
115°F
120°F
125°F
Power
(kW)
5.6
5.9
6.2
6.5
6.9
7.3
Power
(kW)
9.1
9.6
10.2
10.8
11.4
12.1
Power
(kW)
11.9
12.6
13.3
14.0
14.8
15.7
Power
(kW)
15.1
15.9
16.8
17.7
18.7
19.8
35°F
Cool
(Tons)
5.6
5.4
5.3
5.1
5.0
4.8
35°F
Cool
(Tons)
8.2
7.9
7.7
7.4
7.1
6.8
35°F
Cool
(Tons)
10.0
9.7
9.4
9.0
8.7
8.3
35°F
Cool
(Tons)
14.3
13.8
13.4
12.9
12.4
11.8
LEAVING CHILLED WATER
Cool
(EER)
11.9
11.1
10.2
9.4
8.6
7.9
Cool
(EER)
10.8
9.9
9.0
8.2
7.5
6.8
Cool
(EER)
10.1
9.3
8.5
7.7
7.0
6.4
Cool
(EER)
11.4
10.4
9.6
8.7
7.9
7.2
40°F
Power Cool
(kW) (Tons)
5.7
6.3
6.0
6.1
6.3
5.9
6.6
5.8
7.0
5.6
7.4
5.4
40°F
Power Cool
(kW) (Tons)
9.1
9.0
9.6
8.8
10.2
8.5
10.8
8.2
11.4
7.9
12.1
7.6
40°F
Power Cool
(kW) (Tons)
12.0
11.3
12.7
10.9
13.4
10.5
14.2
10.2
15.0
9.8
15.8
9.4
40°F
Power Cool
(kW) (Tons)
15.2
15.8
16.0
15.4
16.8
14.9
17.8
14.4
18.8
13.9
19.9
13.3
Cool
(EER)
13.2
12.2
11.3
10.4
9.6
8.8
Cool
(EER)
11.9
10.9
10.0
9.1
8.3
7.5
Cool
(EER)
11.2
10.3
9.4
8.6
7.8
7.1
Cool
(EER)
12.5
11.6
10.6
9.7
8.9
8.1
45°F
Power Cool
(kW) (Tons)
5.8
7.0
6.1
6.8
6.4
6.6
6.7
6.5
7.1
6.3
7.5
6.1
45°F
Power Cool
(kW) (Tons)
9.2
10.0
9.7
9.7
10.2
9.4
10.8
9.0
11.4
8.7
12.1
8.4
45°F
Power Cool
(kW) (Tons)
12.2
12.6
12.8
12.2
13.6
11.8
14.3
11.4
15.1
11.0
15.9
10.5
45°F
Power Cool
(kW) (Tons)
15.3
17.5
16.1
17.0
16.9
16.5
17.9
16.0
18.8
15.5
19.9
14.9
Cool
(EER)
14.5
13.5
12.5
11.5
10.6
9.7
Cool
(EER)
13.1
12.0
11.0
10.1
9.2
8.3
Cool
(EER)
12.4
11.4
10.4
9.5
8.7
7.9
Cool
(EER)
13.7
12.7
11.7
10.8
9.9
9.0
50°F
Power Cool
(kW) (Tons)
5.9
7.9
6.2
7.6
6.5
7.4
6.8
7.2
7.2
7.0
7.6
6.8
50°F
Power Cool
(kW) (Tons)
9.2
11.0
9.7
10.7
10.2
10.3
10.8
10.0
11.4
9.6
12.1
9.2
50°F
Power Cool
(kW) (Tons)
12.3
14.0
13.0
13.6
13.7
13.1
14.4
12.7
15.2
12.2
16.0
11.8
50°F
Power Cool
(kW) (Tons)
15.5
19.3
16.2
18.8
17.1
18.3
18.0
17.7
18.9
17.2
20.0
16.6
Cool
(EER)
16.0
14.8
13.7
12.7
11.7
10.7
Cool
(EER)
14.4
13.2
12.1
11.1
10.1
9.2
Cool
(EER)
13.6
12.6
11.5
10.6
9.7
8.8
Cool
(EER)
15.0
13.9
12.9
11.8
10.9
10.0
55°F
Power Cool
(kW) (Tons)
6.0
8.7
6.3
8.5
6.6
8.3
6.9
8.0
7.3
7.8
7.7
7.6
55°F
Power Cool
(kW) (Tons)
9.2
12.1
9.7
11.7
10.2
11.4
10.8
10.3
11.4
10.6
12.1
10.2
55°F
Power Cool
(kW) (Tons)
12.4
15.5
13.0
15.0
13.7
14.6
14.5
14.1
15.3
13.6
16.1
13.1
55°F
Power Cool
(kW) (Tons)
15.7
21.1
16.4
20.6
17.2
20.1
18.1
19.5
19.1
18.9
20.1
18.3
Cool
(EER)
17.6
16.3
15.1
13.9
12.9
11.8
Cool
(EER)
15.8
14.5
13.3
11.4
11.1
10.1
Cool
(EER)
15.0
13.8
12.7
11.7
10.7
9.8
Cool
(EER)
16.2
15.1
14.0
12.9
11.9
10.9
For non-published performance ranges, please contact Multistack.
16
Water-to-Water Heat Pump
COOLING PERFORMANCE: R134a REFRIGERANT
MS050AN
Leaving Source Power
Water °F
(kW)
100°F
27.1
105°F
28.5
110°F
30.0
115°F
31.5
120°F
33.2
125°F
35.0
MS070AN
Leaving Source Power
Water °F
(kW)
100°F
34.5
105°F
36.3
110°F
38.1
115°F
40.1
120°F
42.2
125°F
44.6
MS085AN
Leaving Source Power
Water °F
(kW)
100°F
105°F
110°F
115°F
120°F
125°F
35°F
Cool
(Tons)
25.4
24.7
24.0
23.3
22.6
21.9
35°F
Cool
(Tons)
33.1
32.2
31.3
30.4
29.5
28.6
35°F
Cool
(Tons)
LEAVING CHILLED WATER
Cool
(EER)
11.2
10.4
9.6
8.9
8.2
7.5
Cool
(EER)
11.5
10.6
9.8
9.1
8.4
7.7
Cool
(EER)
40°F
Power Cool
(kW) (Tons)
27.4
28.4
28.9
27.7
30.8
29.1
32.0
26.1
33.6
25.4
35.4
24.6
40°F
Power Cool
(kW) (Tons)
34.9
37.0
36.8
36.1
38.7
35.1
40.7
34.1
42.8
33.0
45.1
32.0
40°F
Power Cool
(kW) (Tons)
Cool
(EER)
12.4
11.5
11.3
9.8
9.1
8.3
Cool
(EER)
12.7
11.8
10.9
10.0
9.3
8.5
Cool
(EER)
45°F
Power Cool
(kW) (Tons)
27.7
31.8
29.2
30.9
30.8
30.1
32.4
29.2
34.0
28.4
35.8
27.5
45°F
Power Cool
(kW) (Tons)
35.2
41.4
37.2
40.3
39.2
39.2
41.2
38.1
43.4
36.9
45.6
35.8
45°F
Power Cool
(kW) (Tons)
Cool
(EER)
13.8
12.7
11.7
10.8
10.0
9.2
Cool
(EER)
14.1
13.0
12.0
11.1
10.2
9.4
Cool
(EER)
50°F
Power Cool
(kW) (Tons)
27.8
35.4
29.4
34.4
31.1
33.5
32.8
32.6
34.5
31.6
36.3
30.7
50°F
Power Cool
(kW) (Tons)
35.5
46.1
37.5
44.9
39.6
43.7
41.7
42.4
43.9
41.2
46.2
40.0
50°F
Power Cool
(kW) (Tons)
Cool
(EER)
15.3
14.0
12.9
11.9
11.0
10.2
Cool
(EER)
15.7
14.4
13.2
12.2
11.3
10.4
Cool
(EER)
55°F
Power Cool
(kW) (Tons)
27.7
39.3
29.6
38.3
31.3
37.2
33.1
36.2
34.8
35.2
36.7
34.1
55°F
Power Cool
(kW) (Tons)
35.3
51.2
37.6
49.9
39.9
48.5
42.1
47.2
44.4
45.8
46.7
44.5
55°F
Power Cool
(kW) (Tons)
Cool
(EER)
17.0
15.5
14.3
13.1
12.1
11.2
Cool
(EER)
17.4
15.9
14.6
13.4
12.4
11.4
Cool
(EER)
y
r
o
t
c
a
Call F
For non-published performance ranges, please contact Multistack.
17
Water-to-Water Heat Pump
ELECTRICAL DATA
External Input/Output Connections
18
Water-to-Water Heat Pump
ELECTRICAL DATA, Cont’d.
System Wire & Fuse Sizing Specifications
(Applicable codes may require different wire sizing)
1. Compressor Rated Load Amps (RLA) and Locked Rotor Amps (LRA)
Data: RLA/LRA
R410A
VOLTAGE
208
230
460
R134a
575
VOLTAGE
208
230
460
575
23.5/128
21/128
10.2/63
8.2/49
MS010XN
22.8/123
20.6/123
10.3/62
8.4/50
MS010AN
MS015XN
36.5/225
33/225
16.5/114
13/80
MS015AN
38.7/225
35/225
17.5/114
14/80
MS020XN
44/239
40/239
20/125
16/80
MS020AN
44/239
40/239
20/125
16/80
MS030XN
68/340
61/340
31/173
25/132
MS030AN
61/300
55/300
27/150
22/109
MS050XN
101/605
91/605
46/272
37/215
MS050AN
100/500
90/500
46/250
37/198
MS070XN
133/599
120/599
60/310
48/239
MS070AN
127/599
114/599
58/310
47/239
MS085XN
MS085XN
Call Factory
Note: RLA and LRA is per compressor. Two compressors per module.
2. Wiring Sizing: Minimum Circuit Ampacity (MCA)
MCA = (1.25 x RLA1*) + RLA2 + RLA3
MCA
50
65
85
100
115
130
150
175
200
230
255
285
300
350
400
460
500
6
3 CONDUCTORS CONDUCTORS
1 CONDUIT
2 CONDUIT
8
6
4
3
2
1
1/0
2/0
3/0
4/0
250 MCM
300 MCM
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1/0
2/0
3/0
4/0
4/0
250 MCM
Call Factory
Note: RLA and LRA is per compressor. Two compressors per module.
3. Fuse Sizing: Maximum Fuse (MF), Type RK5 Fuse
MF= (2.25 x RLA1*) + RLA2 + RLA3
Where the MF does not equal a standard size fuse, the next larger size should be
used.
4. Standard modules short circuit current rating: SCCR=5kA
NOTES:
A.*RLA1 = RLA of the largest compressor in the system. RLA2 & RLA3 = RLA of the
other compressors in the system.
B. The total system Minimum Circuit Ampacity (aMCA) shall not exceed 500A.
C. Wire sizing is based on the Nat. Electr. Code (NEC) rating for 75°C copper wire,
with 3 wires per conduit.
D. Wiring Distance from branch circuit shall not exceed 100ft.
19
Water-to-Water Heat Pump
CONTROLLER SCHEMATICS
Chiller Data
ENT. LOAD WATER TEMP.
LOAD WATER PUMP OPERATION
LVG. LOAD WATER TEMP
SOURCE/SINK WATER PUMP OPERATION
VERIFY LOAD WATER FLOW
FAULT NOTIFICATION
ENT. SOURCE/SINK WATER TEMP
FULL LOAD RELAY
LVG. SOURCE/SINK WATER TEMP
CHILLED WATER CONTROLS
VERIFY SOURCE/SINK WATER FLOW
HOT WATER CONTROLS
BUILDING AUTOMATION
SOLUTIONS
INTEROPERABILITY
PORTALS
CUSTOMER INTERLOCKS
LOAD WATER , OR LOAD LIMIT RESET INPUT
RS485 Serial Card
MASTER CONTROL
Can stage a maximum of 15 modules
PCO Net RS485 Interface Board
(30 compressors)
REMOTE DISPLAY
Module Data
(optional)
MODULE CONTROL PANEL
DATA FROM REFRIGERATION SYSTEM “A”
DATA FROM REFRIGERATION SYSTEM “B”
HP TRANSDUCER
HIGH PRESSURE SWITCH
LP TRANSDUCER
COMP. MOTOR PROTECTION
HP TRANSDUCER
HIGH PRESSURE SWITCH
LP TRANSDUCER
COMP. MOTOR PROTECTION
BACNET™
• MSTP
• ETHERNET
• TCP/IP
MODBUS™ (RTU)
SUCTION TEMPERATURE
SUCTION TEMPERATURE
LVG. LOAD WATER TEMP
LVG. LOAD WATER TEMP
SNMP PROTOCOL
CIRCUIT FAULT CONDITION
CIRCUIT FAULT CONDITION
LONMARK™
LVG. SOURCE/SINK WATER TEMP
LVG. SOURCE/SINK WATER TEMP
HIGH VOLTAGE CONTROL PANEL
CIRCUIT “A” COMPRESSOR CONTACTOR
CIRCUIT “B” COMPRESSOR CONTACTOR
20
PCO Web Ethernet Interface Board
Water-to-Water Heat Pump
PIPING SCHEMATICS
Required Load Water Piping
PRESSURE TAPS
SUPPLIED AND INSTALLED BY MULTISTACK
1/2” SENSOR POCKETS SUPPLIED BY MULTISTACK
STRAINER ISOLATION VALVE
Installation of sensor pocket (weld-a let) is recommended
at 30” from end of chiller, supplied and installed by others.
SUPPLIED AND INSTALLED BY OTHERS
EVAPORATOR WATER PUMP
STANDARD “Y” STRAINER
SUPPLIED AND INSTALLED BY OTHERS
SUPPLIED AND INSTALLED BY OTHERS.
NOTE: SELECT STRAINER BASED ON
WATER QUALITY
SP
FROM BUILDING LOAD
SP
TO BUILDING LOAD
FS
MULTISTACK CHILLER
EVAPORATOR ISOLATION VALVES
SUPPLIED AND INSTALLED BY OTHERS
FLOW SWITCH
SUPPLIED AND INSTALLED BY OTHERS
Required Source/Sink Water Piping
PRESSURE TAPS
SUPPLIED AND INSTALLED BY MULTISTACK
1/2” SENSOR POCKETS SUPPLIED BY MULTISTACK
Installation of sensor pocket (weld-a-let) is recommended
at 30” from end of chiller, supplied and installed by others.
FLOW SWITCH
CONDENSER ISOLATION VALVES
SUPPLIED AND INSTALLED BY
OTHERS
SUPPLIED AND INSTALLED BY OTHERS
FS
SP
TO SOURCE/SINK LOAD
SP
FROM SOURCE/SINK LOAD
MULTISTACK CHILLER
STRAINER ISOLATION VALVE
SUPPLIED AND INSTALLED BY
OTHERS
STANDARD “Y” STRAINER
SUPPLIED AND INSTALLED BY OTHERS.
NOTE: SELECT STRAINER MESH BASED ON
WATER QUALITY
SOURCE/SINK WATER PUMP
SUPPLIED AND INSTALLED BY OTHERS
3-WAY SOURCE/SINK
BY-PASS VALVE
SUPPLIED AND INSTALLED IN
BUILDING BY OTHERS
* May be required if tying into
additional heat rejection equipment
like a ground source, cooling tower
or dry cooler.
21
Water-to-Water Heat Pump
MECHANICAL SPECIFICATIONS
PART 2 PRODUCTS
2.01 Operating Conditions
A. Provide water-to-water heat pump with the capacity as scheduled on drawings
at job site elevation listed in Section 15050.
B. Heat Pump shall be designed to operate using R-410A or R-134a Refrigerant.
C. Heat Pump shall be designed for parallel evaporator water flow.
D.The liquid to be heated and cooled will be water containing corrosion inhibitors.
E. Heat Pump shall be designed to operate using ____ volt, 3 phase, 60Hz
electrical power supply.
2.02 Water-to-Water Packaged Heat Pump
A. Approved manufacturer is MULTISTACK.
B. System Description: Heat Pump shall incorporate Scroll-type compressors and
consist of multiple refrigerant circuits. Each refrigerant circuit shall consist of
an individual compressor, condenser, evaporator circuit, thermal expansion
valve, reversing valve, and control system. Each circuit shall be constructed to
be independent of other circuits from a refrigeration and electrical stand-point.
The multi-circuit heat pump must be able to produce chilled water even in the
event of a failure of one or more refrigerant circuits. Circuits shall not contain
more than 20 lb. of R-410a refrigerant.
C. General
1. Heat Pump Modules shall be ETL listed in accordance with UL Standard
1995, CSA certified per Standard C22.2#236, and bear the ASME UM
stamp on all heat exchangers (not applicable for modules with R-410A
refrigerant).
2. Modules shall ship wired and charged with refrigerant. All modules shall be
factory run tested prior to shipment.
3. Compressors, heat exchangers, piping and controls shall be mounted on a
heavy gauge steel frame. Electrical controls, contactors, and relays for each
module shall be mounted within that module.
D.Water Mains: Each module shall include supply and return mains for both
load and source-sink water. Grooved end connections are provided for
interconnection to six inch standard (6.625” outside diameter) piping with
Victaulic type couplings.
E. Heat Exchangers: Each load and source-sink heat exchanger shall be brazed
plate heat exchangers constructed of 316 stainless steel; designed, tested,
and stamped in accordance with UL code 1995 for 650 psig working pressure
on load and source-sink heat exchangers. Heat exchangers shall be mounted
below the compressor, to eliminate the effect of migration of refrigerant to the
cold evaporator with consequent liquid slugging on start-up.
F. Compressor: Each module shall contain two hermetic scroll compressors
independently circuited and with internal spring isolation mounted to the
module with rubber-in-shear isolators. Each system also includes high discharge
pressure and low suction pressure manual reset safety cut-outs.
G.Central Control System.
1. Scheduling of the various compressors shall be performed by a
microprocessor based control system (Master Controller). A new lead
compressor is selected every 24 hours to assure even distribution of
compressor run time.
22
2. The Master Controller shall monitor and report the following on each
refrigeration system:
a. Discharge Pressure Fault
b. Suction Pressure Fault
c. Compressor Winding Temperature
d. Suction Temperature
e. Load Leaving Water Temp.
f. Source-Sink Leaving Water Temp.
3. The Master Controller shall monitor and report the following system
parameters:
a. Load Water Entering and Leaving Temperature
b. Source-Sink Water Entering and Leaving Temperature
c. Load Water and Source-Sink Water Flow
4. An out of tolerance indication from these controls or sensors shall cause a
“fault” indication at the Master Controller and shutdown of that compressor
with the transfer of load requirements to the next available compressor. In
the case of a System Fault the entire heat pump will be shut down. When
a fault occurs, the Master Controller shall record conditions at the time of
the fault and store the data for recall. This information shall be capable of
being recalled through the keypad of the Master Controller and displayed
on the Master Controller’s semigraphical display. A history of faults shall be
maintained including date and time of day of each fault (up to the last 20
occurrences).
5. Individual monitoring of leaving water temperatures from each
refrigeration system shall be programmed to protect against heat
exchanger freeze-up.
6. The control system shall monitor entering and leaving water temperatures
to determine system load and select the number of compressor circuits
required to operate. Response times and set points shall be adjustable. The
system shall provide for variable time between compressor sequencing and
temperature sensing, so as to fine tune the heat pump to different existing
building conditions.
7. Optionally, the Heat pump shall be capable of interfacing with the Building
Automation System via an Interoperability Web Portal.
8. The heat pump mode (heating or cooling) shall be selected by an external
dry contact interlock to the Master Controller. If no interlock is present, or
in the event of a reversing valve solenoid failure, the system shall revert to
heating mode.
H.Heat pump shall have a single point power connection and external inputs
and outputs to be compatible with the building management system. Inputs/
Outputs include:
1. Remote Start/Stop
2. Cooling Alarm
I. Each inlet water header shall incorporate a built in 30-mesh in-line strainer
system to prevent heat exchanger fouling.
Water-to-Water Heat Pump
MECHANICAL SPECIFICATIONS, cont’d
2.03 SAFETIES, CONTROLS AND OPERATION
A. Heat pump safety controls system shall be provided with the unit
(minimum) as follows:
1. Low refrigerant pressure
2. Loss of flow through the source/sink heat exchanger
3. Loss of flow through the load heat exchanger
4. High refrigerant pressure
5. High compressor motor temperature
6. Low suction gas temperature
7. Low leaving water temperature
B. Failure of heat pump to start or heat pump shutdown due to any of the above
safety cutouts shall be enunciated by display of the appropriate diagnostic
description at the unit control panel. This annunciation will be in plain English.
Alphanumeric codes shall be unacceptable.
C. The heat pump shall be furnished with a Master Controller as an integral portion
of the heat pump control circuitry to provide the following functions:
1. Provide automatic heat pump shutdown during periods when the load level
decreases below the normal operating requirements of the heat pump. Upon an
increase in load, the heat pump shall automatically restart.
2. Provisions for connection to automatically enable the heat pump from a
remote energy management system.
3. The control panel shall provide alphanumeric display showing all system
parameters in the English language with numeric data in English units.
D.Normal Heat Pump Operation
1. When heat pump is enabled, the factory supplied Master Controller
modulates the heat pump capacity from minimum to maximum as required
by building load.
2. The heat pump control system shall respond to Entering Water Temperature
and will have an integral reset based on entering water temperature to
provide for efficient operation at part-load conditions.
3. The operating mode (heating or cooling) shall be determined by a customer
provided dry contact interlock.
E. Power Phase Monitor
1. Provide a Power Phase Monitor on the incoming power supply to the heat
pump. This device shall prevent the heat pump from operating during
periods when the incoming power is unsuitable for proper operation.
2. The Power Phase Monitor shall provide protection against
the following conditions:
a. Low Voltage (Brown-Out)
b. Phase Rotation
c. Loss of Phase
d. Phase Imbalance
PART 3 INSTALLATION
3.01 PIPING SYSTEM FLUSHING PROCEDURE
A. A. Prior to connecting the heat pump to the condenser and chilled water
loop, the piping loops shall be flushed with a detergent and hot water (110130° F) mixture to remove previously accumulated dirt and other organic .
In old piping systems with heavy encrustation of inorganic materials consult
a water treatment specialist for proper passivation and/or removal of these
contaminants.
B. During the flushing 30 mesh (max.) Y-strainers (or acceptable equivalent) shall
be in place in the system piping and examined periodically as necessary to
remove collected residue. The flushing process shall take no less than 6 hours or
until the strainers when examined after each flushing are clean. Old systems with
heavy encrustation shall be flushed for a minimum of 24 hours and may take as
long as 48 hours before the filters run clean. Detergent and acid concentrations
shall be used in strict accordance with the respective chemical manufacturers
instructions. After flushing with the detergent and/or dilute acid concentrations
the system loop shall be purged with clean water for at least one hour to ensure
that all residual cleaning chemicals have been flushed out.
C. Prior to supplying water to the heat pump the Water Treatment Specification
shall be consulted for requirements regarding the water quality during heat
pump operation. The appropriate heat pump manufacturer’s service literature
shall be available to the operator and/or service contractor and consulted for
guidelines concerning preventative maintenance and off-season shutdown
procedures.
3.02 Water Treatment Requirements
A. Supply water for both the chilled water and condenser water
circuits shall be analyzed and treated by a professional water
treatment specialist who is familiar with the operating conditions
and materials of construction specified for the heat pump’s heat
exchangers, headers and associated piping. Cycles of
concentration shall be controlled such that recirculated water
quality for modular heat pumps using 316 stainless steel brazed
plate heat exchangers and carbon steel headers is maintained
within the following parameters:
1. pH Greater than 7 and less than 9
2. Total Dissolved Solids (TDS) Less than 1000 ppm
3. Hardness as CaCO3 30 to 500 ppm
4. Alkalinity as Ca CO3 30 to 500 ppm
5. Chlorides Less than 200 ppm
6. Sulfates Less than 200 ppm
23
Environmentally Friendly Refrigerants
R-410A and R-134a
Refrigerant R-410A and R-134a are widely available, safe, and environmentally friendly refrigerants. R-410A is available in virtually all Multistack systems making hot
water up to 140°F and R-134a is available in machines making hot water up to 180°F. Good environmental choices!
Environmental Focus
In addition to providing products to deliver reliable comfort and low operating cost, Multistack’s products can also reduce your environmental footprint. We are
committed to developing and manufacturing cooling and heating products that can reduce fossil fuel consumption and operate on the refrigerants designed to
protect the environment. Dedicated heat recovery chillers, water-to-water heat pumps and efficiency improvements across our product line are the result of this focus.
Originators…
Multistack invented the modular water chiller. It started with a radically simple idea: chiller modules that could be brought into the equipment room one at a time,
through standard doorways and down elevators, to form a fully integrated chiller system. The idea launched a revolution and transformed Multistack into a leader in
the commercial water-chiller industry.
Innovators…
Multistack perfected the modular chiller and leads the industry in innovative and environmentally friendly modular solutions. Since founding in the late 1980s,
Multistack has engineered, manufactured, and distributed an impressive array of modular air conditioning firsts: the first on-board strainer, the first modular
automatic blow-down device, the first modular chiller for variable flow, the first modular chiller-heater (heat pump), the first modular heat-recovery chiller, the first
modular air-to-water heat pump, the first modular chiller to utilize MagLev™ compressor technology, and the first modular chiller to utilize R-410A.
Never the Imitators…
Multistack sets the standard in the industry for superior customer service, fast and on time shipment, superior product quality, and new product development. Our
pioneering leadership in environmental issues is well documented. If you want the best, be sure to specify the original – Multistack®.
1065 Maple Avenue P.O. Box 510 Sparta, WI 54656
Phone 608-366-2400 • Fax 608-366-2450
www.multistack.com
F1110911