Cooper & Hunter CH-CH8SNM User manual

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MINI CHILLER
Service manual
Mini Chiller
Models:
CH-CH8SNM
CH-CH10SNM
CH-CH12.5SNM
CH-CH15SNM
CH-CH22MNM
CH-CH25MNM
CH-CH35MNM
CH-CH45MNM

CONTENTS
PRODUCT......................................................................................................2
1 MODELS LIST .......................................................................................................... 2
2 NOMENCLATURE..................................................................................................... 3
3 FUNCTION ................................................................................................................ 4
4 PRODUCT DATA....................................................................................................... 5
5 PIPING DIAGRAM..................................................................................................... 7
UNITS CONTROL..........................................................................................9
1 OPERATION FLOWCHART...................................................................................... 9
2 MAIN LOGIC.............................................................................................................11
3 WIRED CONTROLLER .......................................................................................... 13
4 CONTROL WIRING DESIGN .................................................................................. 17
UNITS INSTALLATION ...............................................................................19
1 UNITS INSTALLATION............................................................................................ 19
2 WATER PIPING WORK........................................................................................... 24
3 ELECTRIC WIRING WORK..................................................................................... 24
UNITS MAINTENANCE ..............................................................................30
1 ERROR CODE LIST................................................................................................ 30
2 FLOW CHART OF TROUBLESHOOTING.............................................................. 31
3 DISASSEMBLYAND ASSEMBLY PROCEDURE OF MAIN PARTS....................... 33
4 EXPLODED VIEWS AND PART LIST...................................................................... 45

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Service Manual
PRODUCT
PRODUCT

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Service Manual
PRODUCT
PRODUCT
1 MODELS LIST
1.1 Split Type
Model Nominal
Capacity Power Supply Appearance
Refrigerant Model Name kW (V,Ph,Hz)
R410A
CH-CH8SNM
CH-CH8SNM(I)
7.5
380-415V 3Ph 50Hz
CH-CH8SNM(O)
CH-CH10SNM
CH-CH10SNM(I)
10.0
CH-CH10SNM(O)
CH-CH12.5SNM
CH-CH12.5SNM(I)
12.5
CH-CH12.5SNM(O)
CH-CH15SNM
CH-CH15SNM(I)
14.2
CH-CH15SNM(O)
Note:1Ton =12000Btu/h = 3.517kW

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PRODUCT
1.2 Integral Type
Model Nominal
Capacity Power Supply Appearance
Refrigerant Model Name kW (V,Ph,Hz)
R410A
CH-CH22MNM 21.5
380-415V 3Ph 50Hz
CH-CH25MNM 22.8
CH-CH35MNM 31
CH-CH45MNM 42
Note:1Ton =12000Btu/h = 3.517kW
2 NOMENCLATURE
1.1 Split Type
Description Options
1
Mini chiller
-
2
3 Nominal Cooling Capacity
8:7.5kW=2.13RT
10:10 kW=2.84RT
12.5:12.5kW =3.55RT
15:14.2kW=4.04RT
4 Performance type M=Monoblock
S=Split
5
6
Refrigerant N=R410A
7
Voltage M=380-415V 3Ph 50Hz
NO.
CHCH 10SNM(I)
12345 6 7
-
Cooper&Hunter
Unit type I=Indoor; O=Outdoor
-

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PRODUCT
1.2 Integral Type
CHNCH25M- M
1 2 3 4 5 6
NO. Description Options
1 Cooper&Hunter -
2
3 Nominal Cooling Capacity
22:21.5kW=6.11RT
25:22.8kW=6.48RT
35:31kW=8.82RT
45:42kW=11.94RT
4 Perfomance Type M=Monoblock
S=Split
5 Refrigerant N=R410A
6 Voltage M=380-415V 3Ph 50Hz
3 FUNCTION
Indoor Unit Type Function Description
Split Type
Heating/Cooling
Interface kit for up to 16 indoor units
Memory restart
Two circuits optimized design
Low noise design
Safety and reliability thanks to advance
compressor balance control
Integral Type
Mini chiller -

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Service Manual
PRODUCT
4 PRODUCT DATA
4.1 Product Data at Rated Condition
4.1.1 Split Type
Models CH-CH_SNM
8 10 12.5 15
Nominal Capacity
Cooling
kW 7.5 10 12.5 14.2
Btu/h 25590 34120 42650 48450
RT 2.13 2.84 3.55 4.04
Heating
kW 9 12 13 16.5
Btu/h 30708 40944 44356 56298
RT 2.56 3.41 3.70 4.69
Power Consumption Cooling kW 3.5 4.4 5.7 5.7
Heating kW 3.3 4.4 4.8 5.3
Power Supply 380-415V,3Ph,50Hz
Safeties
high-pressure protection,low-pressure protection,exhaust temp. protection,overload
protection,antifreeze protection
Refrigerant Type R410A
Charge kg 3.10 3.55 4.50 5.00
Compressor Type Constant Speed scroll
NO. 1 1 1 1
Evaporator Heat Exchanger Tube-in-Tube
Water In/Out
Pipe Diameter Inch 1"Female BSP 1"Female BSP 1"Female BSP 1"Female BSP
Condenser
Heat Exchanger Aluminum n-copper tube
Fan Motor Power Input kW 0.092 0.068 0.092 0.092
Fan quantity 12 2 2
Pump
Water Flow L/s 0.38 0.48 0.59 0.72
GPM 5.0 6.3 7.79 9.5
Delivery Lift m18 18 18 18
Power Input kW 0.55 0.55 0.55 0.55
Expansion Vessel Volume L5 5 5 5
Indoor
Unit
Unit /
Packing
Dimension
Width mm 1100/1285 1100/1285 1100/1285 1100/1285
Depth mm 450/682 450/682 450/682 450/682
Height mm 288/385 288/385 288/385 288/385
Net/Gross Weights kg 84/96 84/96 84/96 84/96
Outdoor
Unit
Unit /
Packing
Dimension
Width mm 950/1110 950/1110 950/1110 950/1110
Depth mm 412/450 412/450 412/450 412/450
Height mm 840/985 1250/1385 1250/1385 1250/1385
Net / Gross Weights kg 90/100 112/123 115/129 119/129

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PRODUCT
4.1.2 Integral Type
Models CH-CH_MNM
22 25 35 45
Nominal
Capacity
Cooling
kW 21.5 22.8 31 42
Btu/h 73358 77794 105772 143304
RT 6.11 6.48 8.82 11.94
Heating
kW 25 25 37.5 49
Btu/h 85300 85300 127950 167188
RT 7.11 7.11 10.66 13.93
Power
Consumption
Cooling kW 8.6 8.8 11.9 18.3
Heating kW 8.6 8.9 12.5 17.5
Power Supply 380-415V 3Ph 50Hz
Safeties high-pressure protection,low-pressure protection,exhaust temp. protection,overload
protection,antifreeze protection
Refrigerant Type R410A
Charge kg 3.6×2 4.8×2 6.5×2 7.3×2
Compressor Type Constant Speed scroll
NO. 2 2 2 2
Evaporator
Heat Exchanger Tube-in-Tube Tube-in-Tube Dry Expansion
Evaporator Dry Expansion
Evaporator
Water In/
Out Pipe
Diameter Inch 1"Female BSP 1"Female BSP 1-1/2"Female BSP 1-1/2"Female BSP
Condenser
Heat Exchanger Aluminum n-copper tube
Fan Motor
Power Input kW 0.4 0.4 0.6 0.8
Pump
Water Flow L/s 0.92 1.2 1.4 2.2
GPM 4.06 5.29 6.17 9.7
Delivery Lift m22 24 25 27
Power Input kW 0.75 0.75 1.5 1.5
Expansion Vessel Volume L8 8 8 8
Unit / Packing
Dimension
Width mm 1460/1540 1460/1540 1750/1910 1750/1910
Depth mm 530/710 530/710 800/960 800/960
Height mm 1850/2100 1850/2100 1760/1970 1760/1970
Net/Gross Weights kg 380/387 380/392 680/690 755/765
Notes：
a. Cooling capacity is based on the following conditions：leaving chilled water temp.7℃,outdoor air temp. 35℃.
b. Heating capacity is based on the following conditions：leaving warmed water temp.45℃, outdoor air temp. 7℃.
c. Water ow range for operation must be from 70% to 120% of the rated water ow.
d. The maximum allowable pressure for water pipe is 0.9MPa.

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PRODUCT
4.2 Operation Range
Mode Range of Outdoor Temperature (℃)
Cooling 16~43
Heating -15~28
4.3 Electrical Data
4.3.1 Split Type
Model Rated Power
Supply
Compressor Fan Motor Pump Total
Outdoor
NO. LRA each
(A) MRC each (A) NO. MRC (A) MRC (A) MRC (A) NRC (A)
CH-CH8SNM
380-415V
3Ph 50Hz
1 65 9.1 1 1.5 0.7 9.4 7.0
CH-CH10SNM 1 66 11.6 2 2.0 0.7 13.0 8.5
CH-CH12.5SNM 1 67 13.7 2 2.0 0.7 14.5 10.5
CH-CH15SNM 1 67 13.7 2 2.0 0.7 14.5 10.5
4.3.2 Integral Type
Model Rated Power
Supply
Compressor Fan Motor Pump Total
NO. LRA each
(A)
MRC each
(A)
NO. MRC
(A) MRC (A) MRC (A) MRC (A)
CH-CH22MNM
380-415V
3Ph 50Hz
2 73 11.6 2 5.0 1.5 19.5 14.5
CH-CH25MNM 2 66 13.5 2 5.0 1.5 23.5 18.5
CH-CH35MNM 2 101 16.4 2 7.5 3.0 28.5 24.5
CH-CH45MNM 2 110 22.5 2 7.5 3.0 45.0 31.0
Notes:
a. LRA: Locked rotor amps (A).
b. MRC: Maximum running current (A).
c. NRC: Nominal running current (A).
5 PIPING DIAGRAM

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CONTROL
CONTROL