Cooper & Hunter GRS-Cm18/A-M Service Manual Download Page 41

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AIR COOLED SCROLL CHILLER MAINTENANCE

3 WIRING DIADRAM

GRS-Cm18/A-M:

Specification:

Auxiliary electric heater is optional part for

heat pump unit, once it is used, please
connect the temp. restricter HT with XT2-1
and XT2-2.
2 Remarks: " " means terminals on XT2.1

or XT2.2 patching board.

Regenerrative water tank

Drainage valve

Heating Water tank
low level switch

Heating Water tank
high level switch

Filling water valve

water level switch

Auxiliary

User water
temp. sensor

Auxiliary

All elements in the broken-line box is FOR
CUSTOMER WIRING Please refer to the
diagram below while wiring those elemnts.

Terminal

For

X33

X37

Heating water tank high
level switch

X36

Heating water tank low
level switch

X16

Contactor & Thermic Relay
of the booster

X14

Drainage valve

X18

Filling water valve

X19

Contactor of User’s pump

X17

Contactor & temp.
restricter of Auxiliary

Regenerative water tank

water level switch

GRS-Cm36/A-M:

Summary of Contents for GRS-Cm18/A-M

Page 1: ...CIRCULATINGAIR SOURCE WATER HEAT PUMP SERVICE MANUAL...

Page 2: ...ROL WIRING DESIGN 13 INSTALLATION 15 1 UNITS INSTALL 15 1 1 Installation Positions 15 1 2 Matters need Attention 15 1 3 Dimension Data 16 1 4 Installation Clearance Data 17 1 6 Installation of Water L...

Page 3: ...C H COMMERCIAL AIR CONDITIONERS CIRCULATING AIR SOURCE WATER HEATER 1 PRODUCT...

Page 4: ...ATER HEATER PRODUCT 2 PRODUCT 1 MODELS LIST Model Refrigerant Model Name Nominal Capacity kW Power Supply V Ph Hz Appearance GRS Cm18 A M 18 GRS Cm36 A M 36 R22 GRS Cm65 A M 65 380 415V 3Ph 50Hz Note...

Page 5: ...is safer and more reliable than the conventional water heater Easy Installation and Maintenance The unit can be installed on balcony rooftop yard basement and so on no special machine room needed It c...

Page 6: ...volume m3 h 3 1 6 0 11 2 Water pressure drop KPa 29 35 80 Water system Water in out pipe inch 1 1 1 1 2 2 Height mm 1100 1460 1750 Width mm 410 530 800 Unit Dimension Depth mm 1250 1850 1760 Height mm...

Page 7: ...Motor Compressor Outdoor Total Model Rated Power Supply NO LRA each A MR C each A NO MRC A MRC A NRC A GRS Cm18 A M 1 60 10 9 2 0 30 11 50 8 28 GRS Cm36 A M 2 60 10 9 2 0 30 23 80 17 18 GRS Cm65 A M 3...

Page 8: ...leased to high temperature heat source to generate hot water With the same working principle as heat pump water heater heat pump air conditioner obtains heat from natural environment which will be sup...

Page 9: ...C H COMMERCIAL AIR CONDITIONERS CIRCULATING AIR SOURCE WATER HEATER 7 CONTROL...

Page 10: ...CIRCULATING AIR SOURCE WATER HEATER CONTROL 8 UNITS CONTROL 1 OPERATION FLOWCHART...

Page 11: ...g outdoor fan will operate at low speed if outdoor ambient temperature Tambient229 the outdoor fan will resume running at high speed if outdoor ambient temperature 29 Tambient231 the previous running...

Page 12: ...CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 10 3 WIRED REMOTE CONTROLLER 3 1 Dimension 3 2 Function Operation View...

Page 13: ...ton reserved 3 Receive window reserved 15 Error display 27 Increase button 4 Water temp water temp setting display of inquiry of parameters 16 Defrosting display 28 Temp setting button 5 Time timer er...

Page 14: ...ay 23 Reset button 12 Auto anti freezing running display 24 Swing button reserved 3 3 Installation Screw hole for installation of manual controller Cut off a part of sponge at the back of the under pl...

Page 15: ...of wired controller and main board connect interface CN2 of wired controller to interface CN25 of main board with communication cable 4 core twisted pair Connection of main boards connect interface CN...

Page 16: ...C H COMMERCIAL AIR CONDITIONERS CIRCULATING AIR SOURCE WATER HEATER 14 INSTALLATION...

Page 17: ...em to prevent refrigerant from leakage 2 Strict inspection and test of each unit in factory are preformed to ensure performance and quality The user must be careful during installation and carrying to...

Page 18: ...safety standard Foundation bolt R ubber dam ping pad U nit base H oisting m ethod of unit Fixing m ethod of foundation bolt If there is any question during checking and inspection please contact loca...

Page 19: ...URCE WATER HEATER INSTRALLATION 17 GRS Cm65 A M Models H A B C D GRS Cm36 A M 1850 1460 530 1260 544 GRS Cm65 A M 1760 1750 710 1290 800 1 4 Installation Clearance Data Unit mm GRS Cm18 A M Installati...

Page 20: ...CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 18 Air outlet Air inlet Demonstration L1 L2 L3 L4 Distance 500 1000 500 1000 Installation of multiple units...

Page 21: ...CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 19 Demonstration L1 L2 L3 L4 L5 Distance 500 1000 500 1000 1000 GRS Cm36 A M GRS Cm65 A M Installation of single unit Installation of multiple units...

Page 22: ...of water pipe separately connect the two pieces of attached PPR pipes with water inlet and outlet of the unit and then connect them with external water pipe 5 Water pipe and valve In order to ensure...

Page 23: ...st unit and water tank and diameter of connection pipe of water system should meet the requirements below Diameter of connection pipe Inch Distance between host unit and water tank mm 1 1100 2 4300 Pi...

Page 24: ...her than lower water outlet to avoid racing of water pump during operation of unit High water level switch must be kept 50 100mm lower than top of water tank to avoid outflow of water in tank Weld a n...

Page 25: ...er cord must be fixed reliably to protect the connecting terminal from force The dimension of power cord must meet the requirements in this specification refer to the following table When the power co...

Page 26: ...the above wiring diagram supply water pump must be installed in the circulating insulating unit If the unit is a single system install it on the main module It is optional Auxiliary module Note Auxil...

Page 27: ...Z K M 2isA Cc o n ta c to ro fc irc u la tin gw a te rp u m p Applicable to GRS Cm36 A M GRS Cm65 A M Main module User side tempsensor Connect with CN25of next module mainboard Manual controller Main...

Page 28: ...n module and auxiliary module Note 1 are middle relays The coil voltage is 3 is AC contactor of control of circulating water pump n n XT2 XT2 XT2 Unit Unit Unit n 2 3 Specification of Power Cord Air S...

Page 29: ...ad 3 The capacity of air switch and diameter of power cord is valid without connecting auxiliary electric heater 4 The power cord is BV single core wire 2 to 4 wires used in 40 ambient temperature The...

Page 30: ...AIR COOLED SCROLL CHILLER MAINTENANCE 28 MAINTENANCE...

Page 31: ...nding compressor and the fan will stop If the switch resumes normal after 3min they will resume running automatically If low pressure protection is detected for 2 times in 40min the error code will be...

Page 32: ...loads The unit will resume running automatically F4 Discharge temperature sensor malfunction Discharge temperature sensor Discharge temperature sensor is used to prevent the unit from damage caused b...

Page 33: ...he lower water level switch indicates that the water level is too low it is water level switch malfunction If there is no such error setting the unit will stop abnormally The unit can resume automatic...

Page 34: ...AIR COOLED SCROLL CHILLER MAINTENANCE 32 2 FLOW CHART OF TROUBLESHOOTING 1 High pressure protection E1...

Page 35: ...AIR COOLED SCROLL CHILLER MAINTENANCE 33 2 Low pressure protection E3...

Page 36: ...AIR COOLED SCROLL CHILLER MAINTENANCE 34 3 Compressor overload protection E5...

Page 37: ...AIR COOLED SCROLL CHILLER MAINTENANCE 35 4 Discharge high temperature protection E4...

Page 38: ...CIRCULATING AIR SOURCE WATER HEATER MAINTENANCE 36 5 Water flow switch protection Ec...

Page 39: ...AIR COOLED SCROLL CHILLER MAINTENANCE 37 6 Water level switch error L2 7 Communication failure E6...

Page 40: ...9 L5 Temperature Sensor Error Check if the plug on temperature sensor is correctly connected to the socket Check if the resistance of temperature sensor is correct YES Check the orientation of plug an...

Page 41: ...ating Water tank high level switch Filling water valve water level switch Auxiliary Auxiliary User water temp sensor Auxiliary All elements in the broken line box is FOR CUSTOMER WIRING Please refer t...

Page 42: ...ithXT2 1andXT2 2 2Rem arks m eansterm inalsonXT2 1orXT2 2 patchingboard Auxiliary Auxiliary User w ater tem p sensor Auxiliary All elem entsinthe broken lineboxis FO RCUSTO M ER W IRIN G Pleaserefer...

Page 43: ...temp restricter HT with XT2 1 and XT2 2 2 Remarks means terminals on XT2 1 or XT2 2 patching board User water temp sensor Auxiliary Auxiliary Auxiliary All elements in the broken line box is FOR CUSTO...

Page 44: ...with the screwdriver Draw out the power cord If the compressor includes electric heater remove it Note mark the colour of wire corresponding to the terminal when removing the wire so that mistakes ca...

Page 45: ...and air outlet to pipes connect power cord and inspect if the compressor is running normally Connect the suction and exhaust pipe to the compressor and weld it Nitrogen must be charged when welding Af...

Page 46: ...te and can be analyzed in the future Remove the 4 way valve 2 Clean the system replace the 4 way valve of the same model The piping should be the same as it is before removal The new 4 way valve shoul...

Page 47: ...of Gas liquid Separator and Accumulator Remarks reclaim the refrigerant Prepare related equipment and tools and ensure the good ventilation of the working environment Step Illustration Handling Instr...

Page 48: ...parator and accumulator 3 Assemble and weld the gas liquid separator and accumulator Charge nitrogen during welding Connect the pipe with the soldering gun Notice Charge nitrogen during welding Disass...

Page 49: ...electronic expansion valve Wrap the 4 way valve with wet cloth Solder off the elctronic expansion valve 3 Mount a new electronic expansion valve Mount a new expansion valve of the same type Wrap the...

Page 50: ...ff the power and recover the refrigerant Step Illustration Handling Instruction 1 Recover refrigerant Cut off the power of the unit Recover the refrigerant 2 Remove the filter Wrap the filter with wet...

Page 51: ...AIR COOLED SCROLL CHILLER MAINTENANCE 49 5 EXPLODED VIEWS AND PART LIST GRS Cm18 A M Part List...

Page 52: ...y 1122215 1 9 Top Cover 1258728 1 10 Gas liquid Separator Assy 7225479 1 11 Bidirection Accumulator 7228214 1 12 Expansion Assy 7332215 1 13 connection Pipe Sub assy 10 5222108 1 14 Connection Pipe 5...

Page 53: ...CHILLER MAINTENANCE 51 23 Chassis Sub assy 2 1192209 1 24 Chassis Sub assy 1 01192210P 1 25 Water Pump Support 1802218 1 26 Electric Box Sub Assy 1392271 1 27 Front Side Plate Sub Assy 1308743 1 GRS C...

Page 54: ...AIR COOLED SCROLL CHILLER MAINTENANCE 52...

Page 55: ...ch 45028209 1 9 Double Pipe Condenser 01152223 1 10 Electronic Expansion Valve 07130320 2 11 Left Side Plate Sub Assy 01312223P 1 12 Column sub assy1 01852101 1 13 Chassis Sub assy 01192208P 1 14 Fron...

Page 56: ...lectric heater compressor 76515404 2 24 Pressure Protect Switch 4602001521 2 25 Relief Valve 07188204 1 26 Right Side Plate Sub Assy 01312110 1 27 Water Collecting Tray Sub Assy 01282102 1 28 Condense...

Page 57: ...4 1 8 Accumulator 07422206 2 9 Condenser Bottom Border Subassembly 01768211 1 10 Side Border 01768212 2 11 Dry Evaporator 01028053 1 12 Rear Side Plate 01312125 1 13 Right Side Plate 01308276 1 14 Col...

Page 58: ...Water Pipe Sub Assy 04362242 1 32 connection Pipe Sub assy 05022385 1 33 Column 01722101 1 34 Electric Expansion Valve Sub Assy 07332233 1 35 Right Side Plate 01308274 1 36 Isolation Sheet Subassembly...

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Cooper & Hunter GRS-Cm18/A-M, Service Manual

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