Cooper & Hunter GRS-Cm18/A-M Service Manual
  1. Manuals
  2. Brands
  3. Cooper & Hunter Manuals
  4. Heat Pump
  5. GRS-Cm18/A-M
  6. Service manual

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

Circulating air source water heat pump
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
CIRCULATING AIR SOURCE WATER
HEAT PUMP SERVICE MANUAL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GRS-Cm18/A-M and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Cooper & Hunter GRS-Cm18/A-M

Summary of Contents for Cooper & Hunter GRS-Cm18/A-M

  • Page 1 CIRCULATING AIR SOURCE WATER HEAT PUMP SERVICE MANUAL...

  • Page 2: Table Of Contents

    CONTENTS PRODUCT........................2 1 MODELS LIST..........................2 2 NOMENCLATURE ........................3 3 FUNCTION ..........................3 4 PRODUCT DATA......................... 3 4.1 Product Data at Rated Condition..................3 4.2 Operation Range......................... 5 4.3 Electrical Data........................5 5 PIPING DIAGRAM........................6 UNITS CONTROL ......................8 1 OPERATION FLOWCHART.......................
  • Page 3 C&H COMMERCIAL AIR CONDITIONERS CIRCULATING AIR SOURCE WATER HEATER PRODUCT...

  • Page 4: Product

    CIRCULATING AIR SOURCE WATER HEATER PRODUCT PRODUCT 1 MODELS LIST Model Nominal Power Supply Capacity Appearance (V,Ph,Hz) (kW) Refrigerant Model Name GRS-Cm18/A-M 380~415V, GRS-Cm36/A-M 3Ph,50Hz GRS-Cm65/A-M Note:1Ton =12000Btu/h = 3.517kW...

  • Page 5: Nomenclature

    Multi-modular network can control up to 16 host units; parameters of Intelligent Control each unit can be freely set Daily timer on/off function and complete safety ensure reliable operation. 4 PRODUCT DATA 4.1 Product Data at Rated Condition Models GRS-Cm18/A-M GRS-Cm36/A-M GRS-Cm65/A-M...
  • Page 6 CIRCULATING AIR SOURCE WATER HEATER PRODUCT Nominal Capacity Heating Btu/h 61416 122832 221780 10.2 18.5 Power 14.5 Heating Consumption Water outlet temp default 30-58 adjustable 3Ph, 380~415V,50Hz Power Supply High/Low pressure switch, compressor thermal protection, over Safeties current protection, lose of phase/anti-phase protection, antifreeze protection, water flow switch Type Refrigerant...

  • Page 7: Operation Range

    4.3 Electrical Data Fan Motor Compressor Total Outdoor Rated Model Power Supply each each 10.9 0.30 11.50 8.28 GRS-Cm18/A-M 380~415V 10.9 0.30 23.80 17.18 GRS-Cm36/A-M 50Hz 21.6 0.99 45.18 36.18 GRS-Cm65/A-M Notes: LRA: Locked rotor amps (A) MRC: Maximum running current (A)

  • Page 8: Piping Diagram

    CIRCULATING AIR SOURCE WATER HEATER PRODUCT 5 PIPING DIAGRAM Air source is a kind of low-grade energy which exists widely and can be equally supplied and freely applied. Via heat pump circulation, it can potentially developed into a new kind of energy saving and environment friendly technology with practical value.
  • Page 9 C&H COMMERCIAL AIR CONDITIONERS CIRCULATING AIR SOURCE WATER HEATER CONTROL...

  • Page 10: Units Control

    CIRCULATING AIR SOURCE WATER HEATER CONTROL UNITS CONTROL 1 OPERATION FLOWCHART...

  • Page 11: Main Logic

    CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 2 MAIN LOGIC 1). Control of Compressor Operating condition of compressor I When T ≤T_set-ΔT (5 )-1, the compressor will start running. ≥T_set, the compressor will stop running. When T When T_set-ΔT(5 )-1 T_set, the previous running state will remain. Operating condition of compressor II When T ≤T_set-Δ...

  • Page 12: Wired Remote Controller

    CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 3 WIRED REMOTE CONTROLLER 3.1 Dimension 3.2 Function Operation View...
  • Page 13 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION Constitution of Wired Controller Display electric Power indicator Lock button auxiliary heater Water level display of Sleep button ON/OFF button water tank (reserved) Receive window (reserved) Error display Increase button Water temp. / water temp. setting/ Temp setting Defrosting display...

  • Page 14: Installation

    CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION Setting timer display Auxiliary heat button Save button speed button Unit no. display Ok button (reserved) Selection Selected icon display Exit button single/multi button Lock display Reset button Auto anti-freezing running display Swing button(reserved) 3.3 Installation Screw hole for installation of manual controller Cut off a part of sponge at the back of...

  • Page 15: Control Wiring Design

    CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 4 CONTROL WIRING DESIGN Connection 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 CN15 to interface CN25 of another main board with communication cable (4-core twisted pair).
  • Page 16 C&H COMMERCIAL AIR CONDITIONERS CIRCULATING AIR SOURCE WATER HEATER INSTALLATION...

  • Page 17: Installation

    CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION INSTALLATION 1 UNITS INSTALL 1.1 Installation Positions The unit can be installed on balcony, rooftop, special platform or any other place where is easy for installing the unit and able to stand the weight of the unit. Install the unit in the place with well ventilation and smooth air discharge.

  • Page 18: Dimension Data

    F ix in g m e th o d o f fo u n d a tio n b o lt If there is any question during checking and inspection, please contact local dealer for help. 1.3 Dimension Data Unit: mm GRS-Cm18/A-M GRS-Cm36/A-M...

  • Page 19: Installation Clearance Data

    CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION GRS-Cm65/A-M Models 1850 1460 1260 GRS-Cm36/A-M 1760 1750 1290 GRS-Cm65/A-M 1.4 Installation Clearance Data Unit: mm GRS-Cm18/A-M Installation of single unit...
  • Page 20 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION Air inlet Air outlet Demonstration Distance >500 >1000 >500 >1000 Installation of multiple units...
  • Page 21 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION Demonstration Distance >500 >1000 >500 >1000 >1000 GRS-Cm36/A-M GRS-Cm65/A-M Installation of single unit Installation of multiple units...
  • Page 22 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 1.5 Installation of Water Circulating System 1) Design and construction of water system must accord with relative standard and requirements. 2) The unit adopts target flow switch for cut-off protection. Point of zero flow has been set in factory.

  • Page 23: Installation Of Water Level Switch

    CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 8) Thermometer and water pressure gauge must be installed at water in/out pipe for easy check during operation of unit. Glass thermometer at 0-100 deg ree s and water pressure gauge at 0-1.6MP is recommended. The filter above 20 meshes must be installed at water in place and periodically cleaned to avoid blockage in heat exchanger.
  • Page 24 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION Installation sketch Outline sketch of water level switch Notice for installation: Install water level switch according to installation sketch map. During installation, the user should equip a piece of hollow stainless steel tube according to the above sketch map, whose length depending on height of selected water tank.

  • Page 25: Electric Wiring Work

    It is necessary to install air switch and creepage switch to cut off the power of the whole system. Press testing button of creepage switch once every month to ensure it is available. 2.2 Electric Wiring Design 1 Exterior Wiring Diagram Exterior wiring diagram of circulating air source heat pump water heater Applicable to GRS-Cm18/A-M Main module...
  • Page 26 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION X T 1 M a in b o a rd C N 2 5 M a n u a l c o n tro lle r C o n n e c t w ith C N 2 5 o f C N 1 5 n e x t m o d u le m a in b o a rd C N 1 2...
  • Page 27 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION diagram). It is not necessary for other units. It is optional. Connection of circulating water pump for main module and auxiliary module c o n tro l o f c irc u la tin g w a te r p u m p U n it U n it n U n it...

  • Page 28: Specification Of Power Cord & Air Switch

    The coil voltage is is AC contactor of 2.3 Specification of Power Cord & Air Switch Minimum Sectional Capability of Minimum Sectional Power Supply Area of Power Model Air Switch Area of Earth Wire Supply Wire V Ph Hz GRS-Cm18/A-M 380~415V 3N...
  • Page 29 CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION 50Hz 380~415V 3N GRS-Cm36/A-M 50Hz 380~415V 3N GRS-Cm65/A-M 50Hz Note 1. The power cord must be copper wire. The working temperature should not be higher than the specified value. 2. If the power cord is longer than 15m, please increase its cross section in case of overload. 3.
  • Page 30 AIR COOLED SCROLL CHILLER MAINTENANCE MAINTENANCE...

  • Page 31: Units Maintenance

    AIR COOLED SCROLL CHILLER MAINTENANCE UNITS MAINTENANCE 1 ERROR CODE LIST Code Error name Source Control logic Water pump overload protection is to prevent the water pump from damage due to running under overload state. If overload Water pump Water pump protection is detected for the first time, it can resume running overload overload...
  • Page 32 AIR COOLED SCROLL CHILLER MAINTENANCE Code Error name Source Control logic Failure of wired No.1. If the wired controller can not detect No.1 unit in 1min, controller the error code will be displayed. When No.1 unit is connected rightly, the error code will disappear and the communication will be normal.
  • Page 33 AIR COOLED SCROLL CHILLER MAINTENANCE Code Error name Source Control logic temperature temperature controlling governing valve of water flow. When break circuit sensor sensor or short circuit occurs to outflow water temperature sensor, the malfunction unit will display error code and close all loads. The unit will resume running automatically.

  • Page 34: Flow Chart Of Troubleshooting

    AIR COOLED SCROLL CHILLER MAINTENANCE 2 FLOW CHART OF TROUBLESHOOTING 1 High pressure protection E1:...
  • Page 35 AIR COOLED SCROLL CHILLER MAINTENANCE 2 Low pressure protection E3:...
  • Page 36 AIR COOLED SCROLL CHILLER MAINTENANCE 3 Compressor overload protection E5:...
  • Page 37 AIR COOLED SCROLL CHILLER MAINTENANCE 4 Discharge high temperature protection E4:...
  • Page 38 CIRCULATING AIR SOURCE WATER HEATER MAINTENANCE 5 Water flow switch protection Ec:...
  • Page 39 AIR COOLED SCROLL CHILLER MAINTENANCE 6 Water level switch error L2 7 Communication failure E6...
  • Page 40 AIR COOLED SCROLL CHILLER MAINTENANCE 8 Temperature sensor error (F3, F4, F5, F7, F8, F9,L5) Temperature Sensor Error Check if the plug Check the orientation on temperature sensor is correctly of plug and socket connected to the socket. Replace the Check if the resistance of temperature sensor is correct.

  • Page 41: Wiring Diadram

    AIR COOLED SCROLL CHILLER MAINTENANCE 3 WIRING DIADRAM GRS-Cm18/A-M: All elements in the broken-line box is FOR CUSTOMER WIRING Please refer to the diagram below while wiring those elemnts. Terminal Regenerative water tank water level switch Heating water tank high...
  • Page 42 AIR COOLED SCROLL CHILLER MAINTENANCE All elem ents in the Term inal Regenerative w ater tank broken-line box is water level sw itch FO R CUSTO M ER Heating water tank high W IRIN G Please refer level sw itch to the list on the left Heating water tank low while wiring those...
  • Page 43 AIR COOLED SCROLL CHILLER MAINTENANCE Terminal Regenerative water tank water level switch Heating Water tank high level switch All elements in the Heating Water tank low broken-line box is level switch Contactor & Thermic Relay FOR CUSTOMER of the booster WIRING Please refer Drainage valve to the list on the left...

  • Page 44: Disassembly And Assembly Procedure Of Main Parts

    AIR COOLED SCROLL CHILLER MAINTENANCE 4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS Disassembly and Assembly of Compressor Remark: Make sure there isn’t any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Process Pictorial View Handling Description...
  • Page 45 AIR COOLED SCROLL CHILLER MAINTENANCE Remove the Do not damage the rubber blanket compressor when removing from the compressor. chassis and In case of intake fix the new of moisture, the compressor orifice should be sealed. Place compressor the rubber blanket on which steel bushing is put.
  • Page 46 AIR COOLED SCROLL CHILLER MAINTENANCE Record Record the direction direction 4-way valve 4-way before removing it. valve before Remove the coil. welding it. Do Wrap 4-way not refer to the valve with wet cloth other system. before welding so that it is complete and can be analyzed in the future.
  • Page 47 AIR COOLED SCROLL CHILLER MAINTENANCE Pressurize and Ensure that vacuumize the vacuum deg ree is system. -1.0bar. Recharge name refrigerant. weight charged refrigerant should comply with reqiurement marked nameplate. Removal and Installation of Gas-liquid Separator and Accumulator Remarks: reclaim the refrigerant. Prepare related equipment and tools and ensure the good ventilation of the working environment.
  • Page 48 AIR COOLED SCROLL CHILLER MAINTENANCE Clean Install system and gas-liquid replace the separator gas-liquid accumulator of the separator same model. Fix them with screws. accumulator Connect the pipe of the same to the gas-liquid model. separator accumulator Assemble Connect the pipe and weld the with the soldering gas-liquid...
  • Page 49 AIR COOLED SCROLL CHILLER MAINTENANCE Recover refrigerant. power of the unit. Recover refrigerant. Remove Wrap electronic 4-way valve expansion with wet cloth. valve. Solder off the elctronic expansion valve. Mount a new Mount a new electronic expansion expansion valve of the valve.
  • Page 50 AIR COOLED SCROLL CHILLER MAINTENANCE Disassembly and Assembly of Filter Remark: inspect the refrigerant system and circuitry. After ensure that the electronic expansion valve needs to be replaced, cut off the power and recover the refrigerant. Step Illustration Handling Instruction Recover Cut off the power refrigerant.

  • Page 51: Exploded Views And Part List

    AIR COOLED SCROLL CHILLER MAINTENANCE 5 EXPLODED VIEWS AND PART LIST Part List: GRS-Cm18/A-M...
  • Page 52 AIR COOLED SCROLL CHILLER MAINTENANCE Name of Part Quantity Part Code Front Grill 22265251 Cabinet 1435436 Axial Flow Fan 10335253 Fan Motor 1 150154511 Fan Motor 2 15013711 Double Pipe Condenser 1152224 Motor Support Sub-Assy 1802220 Condenser Assy 1122215 Top Cover 1258728 Gas-liquid Separator Assy 7225479...
  • Page 53 AIR COOLED SCROLL CHILLER MAINTENANCE Chassis Sub-assy 2 1192209 Chassis Sub-assy 1 01192210P Water Pump Support 1802218 Electric Box Sub-Assy 1392271 Front Side Plate Sub-Assy 1308743 Part List GRS-Cm36/A-M...
  • Page 54 AIR COOLED SCROLL CHILLER MAINTENANCE...
  • Page 55 AIR COOLED SCROLL CHILLER MAINTENANCE Name of Part Quantity Part Code Rear Grill 01572101 Centrifugal Fan 10358202 Cabinet Sub-assy 01512101 Fan Motor 1501861502 Motor Support Sub-Assy 01708222 Condenser Assy 2 011221052 Column2 01852102 Current Switch 45028209 Double Pipe Condenser 01152223 Electronic Expansion Valve 07130320 Left Side Plate Sub-Assy...
  • Page 56 AIR COOLED SCROLL CHILLER MAINTENANCE Electric heater(compressor) 76515404 Pressure Protect Switch 4602001521 Relief Valve 07188204 Right Side Plate Sub-Assy 01312110 Water Collecting Tray Sub-Assy 01282102 Condenser Assy 1 011221042 Part List GRS-Cm65/A-M...
  • Page 57 AIR COOLED SCROLL CHILLER MAINTENANCE Name of Part Quantity Part Code Column 01722103 Condenser Assy ` 01122231 Front Grill ` 01238202 Condenser Assy ` 01122232 Water Collecting Tray Sub-Assy ` 01272103 Electric Expansion Valve Sub-Assy ` 07332232 connection Pipe Sub-assy ` 05022384 Accumulator ` 07422206...
  • Page 58 AIR COOLED SCROLL CHILLER MAINTENANCE Column ` 01758214 Front Side Plate ` 01302103 Electric Cabinet Assy ` 01392861 Discharge Tube Sub-Assy ` 0380821302 4-way Valve Sub-Assy ` 04142229 Water Pipe Sub-Assy ` 04362242 connection Pipe Sub-assy ` 05022385 Column ` 01722101 Electric Expansion Valve Sub-Assy ` 07332233 Right Side Plate...

This manual is also suitable for:

Grs-cm36/a-mGrs-cm65/a-m

Table of Contents