Gree Versati III GRS-CQ4.0PdG/NhH2-E Owner's Manual
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Gree Versati III GRS-CQ4.0PdG/NhH2-E Owner's Manual

Air-to-water heat pump
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Change for life
Owner's Manual
Original Instructions
Air Conditioners
Air-to-water Heat Pump All in one Versati
Models:
GRS-CQ4.0PdG/NhH2-E
GRS-CQ8.0PdG/NhH2-E
GRS-CQ8.0PdG/NhH2-M
GRS-CQ12PdG/NhH2-M
GRS-CQ16PdG/NhH2-M
GRS-CQ14PdG/NhH2-E
GRS-CQ6.0PdG/NhH2-E
GRS-CQ10PdG/NhH2-E
GRS-CQ10PdG/NhH2-M
GRS-CQ14PdG/NhH2-M
GRS-CQ12PdG/NhH2-E
GRS-CQ16PdG/NhH2-E
SPLIT
TYPE

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  • Page 1 SPLIT TYPE Change for life Owner's Manual Original Instructions Air Conditioners Air-to-water Heat Pump All in one Versati Models: GRS-CQ6.0PdG/NhH2-E GRS-CQ4.0PdG/NhH2-E GRS-CQ10PdG/NhH2-E GRS-CQ8.0PdG/NhH2-E GRS-CQ10PdG/NhH2-M GRS-CQ8.0PdG/NhH2-M GRS-CQ12PdG/NhH2-M GRS-CQ14PdG/NhH2-M GRS-CQ16PdG/NhH2-M GRS-CQ12PdG/NhH2-E GRS-CQ14PdG/NhH2-E GRS-CQ16PdG/NhH2-E...
  • Page 2 To Users Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our...

  • Page 3: Table Of Contents

    Contents Safety Notices (Please be sure to abide ) ..............1 1. Diagram of the Operating Principle ................. 8 2. Operating Principle of the Unit ................. 8 3. Nomenclature......................10 4. Installation Example ..................... 11 5. Main Components ....................12 5.1 Indoor unit ........................12 5.2 Outdoor unit ........................13 6.
  • Page 4 18.2 Electric Wiring .......................38 19. Commissioning...................... 46 19.1 Check before startup .....................46 19.2 Test run .........................47 20. Daily Operation and Maintenance ............... 48 20.1 Recovery ........................49 20.2 Decommissioning ......................49 20.3 Safety consideration .....................50 20.4 Notice before Seasonal Use ..................52 20.5 Replacement of the Magnesium Rod ................52 20.6 Requirements on water quality ..................52 20.7 Precautions ........................52 21 External Water Pump and Three-way Valve ............

  • Page 5: Safety Notices (Please Be Sure To Abide )

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Safety Notices (Please be sure to abide ) WARNING: If not abide strictly, it may cause severe damage to the unit or the people. NOTE: If not abide strictly, it may cause slight or medium damage to the unit or the people.
  • Page 6 Air-to-water Heat Pump All in One Versati SPLIT TYPE WARNING Once abnormality Don't operate the unit with Before likeburning smell occurs, wet hand. installation,please see please cut off the power if the voltage of local supply immediately and place accords with then contact with service that on nameplate center.
  • Page 7 Air-to-water Heat Pump All in One Versati SPLIT TYPE Before cleaning please cut The power supply must User can not change off the power supply. adopt special circuit with power cord socket leakage switch and enough without prior consent. capacity. Wiring working must be done by professionals.
  • Page 8 Air-to-water Heat Pump All in One Versati SPLIT TYPE Don't step on the top of the Never block the air inlet and Keep pressurized unit or place anything on it. outlet of unit. spray, gas holder and so on away from the unit above 1m .
  • Page 9 Air-to-water Heat Pump All in One Versati SPLIT TYPE WARNING Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Should repair be necessary, contact your nearest authorized service centre. Any repairs carried out by unqualified personnel may be dangerous.
  • Page 10 Air-to-water Heat Pump All in One Versati SPLIT TYPE To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the fluoride R32, which is specially cleaned.The refrigerant is flammable and inodorous. Furthermore, it can leads to explosion under certain conditions.
  • Page 11 Air-to-water Heat Pump All in One Versati SPLIT TYPE Maximum and Minimum Water Operating Temperatures Maximum Minimum water operating Item water operating temperatures temperatures Cooling 7°C 25°C Heating 20°C 60°C Water heating 40°C 80°C Maximum and Minimum Water Operating Pressures Minimum water operating Maximum water Item...

  • Page 12: Diagram Of The Operating Principle

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 1. Diagram of the Operating Principle Ambient temp . Defrost sensor temp . sensor T -economizer Fin-tube heat 4-way High pressure exchanger valve sensor T-economizer EXV2 T-liquid T-gas pipe pipe High pressure switch EXV1 Discharge...
  • Page 13 Air-to-water Heat Pump All in One Versati SPLIT TYPE user’s requirement. Through the control of valve, the high-temperature water in the system is connected with indoor fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor temperature increases to the required range.

  • Page 14: Nomenclature

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 3. Nomenclature Description Options GREE G-GREE Air to water heat pump Heating Mode S= Static; C=Circulating Function Q=Multi-function; Default=Single-function Nominal Heating Capacity 4.0=4.0kW; 6.0=6.0kW; 8.0=8.0kW;10=10kW; Compressor Style Pd=DC Inverter; Default=On/Off Water tank model...

  • Page 15: Installation Example

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 4. Installation Example CASE 1: Connecting Under-floor Coil and FCU for Heating and Cooling Indoor Outdoor Under-floor coils FCU2 FCU1 Bypass valve Shut-off valve (Field supplied) Notes (a) The two-way valve is very important to prevent dew condensation on the floor while cooling mode; (b) Type of thermostat and specification should be complied with installation of this manual;...

  • Page 16: Main Components

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 5. Main Components 5.1 Indoor unit (1) GRS-CQ4.0PdG/NhH2-E(I),GRS-CQ6.0PdG/NhH2-E(I),GRS-CQ8.0PdG/NhH2-E(I), GRS-CQ10PdG/NhH2- E(I), GRS-CQ8.0PdG/NhH2-M(I), GRS-CQ10PdG/NhH2-M(I), GRS-CQ12PdG/NhH2-M(I), GRS-CQ14PdG/ NhH2-M(I), GRS-CQ16PdG/NhH2-M(I), GRS-CQ12PdG/NhH2-E(I), GRS-CQ14PdG/NhH2-E(I), GRS-CQ16PdG/ NhH2-E(I) External Plate heat exchanger Expansion tank Automatic relief valve 3-way valve Automatic relief valve Flow switch Plate heat exchanger...

  • Page 17: Outdoor Unit

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Optional e-heater Water tank EH See the table below for how to match the optional E-heater and water tank E-heater. Optional E-heater Water tank EH GRS-CQ4.0PdG/NhH2-E(I) 1.5+1.5KW GRS-CQ6.0PdG/NhH2-E(I) GRS-CQ8.0PdG/NhH2-E(I) GRS-CQ10PdG/NhH2-E(I) GRS-CQ8.0PdG/NhH2-M(I) GRS-CQ10PdG/NhH2-M(I) GRS-CQ12PdG/NhH2-M(I) 3+3KW...
  • Page 18 Air-to-water Heat Pump All in One Versati SPLIT TYPE (2) GRS-CQ8.0Pd/NhH2-E(O), GRS-CQ10Pd/NhH2-E(O) External Control Box DC Fan Motor Compressor Internal (3) GRS-CQ8.0Pd/NhH-M(O), GRS-CQ10Pd/NhH-M(O) External Control Box DC Fan Motor Compressor Internal...

  • Page 19: Installation Guideline Of Outdoor Unit

    Air-to-water Heat Pump All in One Versati SPLIT TYPE (4) GRS-CQ12Pd/NhH-M(O) , GRS-CQ14Pd/NhH-M(O), GRS-CQ16Pd/NhH-M(O), GRS-CQ12Pd/NhH-E(O) , GRS- CQ14Pd/NhH-E(O), GRS-CQ16Pd/NhH-E(O) External Internal 6. Installation Guideline of Outdoor Unit 6.1 Instruction to installation (1) Installation of the unit must be in accordance with national and local safety codes. (2) Installation quality will directly affect the normal use of the air conditioner unit.
  • Page 20 Air-to-water Heat Pump All in One Versati SPLIT TYPE 6.2.2 Outline dimension of outdoor unit (1) GRS-CQ4.0Pd/NhH2-E(O), GRS-CQ6.0Pd/NhH2-E(O) (2) GRS-CQ8.0Pd/NhH2-E(O), GRS-CQ10Pd/NhH2-E(O)
  • Page 21 Air-to-water Heat Pump All in One Versati SPLIT TYPE (3) GRS-CQ12Pd/NhH-M(O) , GRS-CQ14Pd/NhH-M(O), GRS-CQ16Pd/NhH-M(O), GRS-CQ12Pd/NhH-E(O) , GRS- CQ14Pd/NhH-E(O), GRS-CQ16Pd/NhH-E(O) (4) GRS-CQ8.0Pd/NhH-M(O), GRS-CQ10Pd/NhH-M(O) Unit: inch Name Remarks GRS-CQ4.0PdG/NhH2-E, GRS-CQ6.0PdG/NhH2-E, GRS-CQ8.0PdG/NhH2-E, Liquid-side Service GRS-CQ10PdG/NhH2-E, GRS-CQ12PdG/NhH2-E, GRS-CQ14PdG/NhH2-E, Valve GRS-CQ16PdG/NhH2-E, GRS-CQ8.0PdG/NhH2-M, GRS-CQ10PdG/NhH2-M, GRS-CQ12PdG/NhH2-M, GRS-CQ14PdG/NhH2-M, GRS-CQ16PdG/NhH2-M, GRS-CQ4.0PdG/NhH2-E, GRS-CQ6.0PdG/NhH2-E, GRS-CQ8.0PdG/NhH2-E, Gas-side Service Valve GRS-CQ10PdG/NhH2-E, GRS-CQ8.0PdG/NhH2-M, GRS-CQ10PdG/NhH2-M,...

  • Page 22: Installation Of Indoor Unit

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 6.2.3 Space requirements for installation Wall Wall ＞200 ＞300 ＞250 ＞350 ＞200 ＞1000 ＞1000 Wall Wall 6.2.4 Precautions on installation of outdoor unit (1) When moving outdoor unit, it is necessary to adopt 2 pieces of long enough rope to hand the unit from 4 directions.

  • Page 23: Space Requirements For Installation

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 7.2 Space requirements for installation 600mm Wall Wall Wall Wall Service Space Note NOTE • While lifting the indoor unit, at least two persons should be joined. Weight of the indoor unit is more than 50kg. •...

  • Page 24: Precautions On Installation Of Indoor Unit

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Unit: inch Name Remarks Leaving Water Pipe 1″Male BSP Returning Water Pipe 1″Male BSP GRS-CQ4.0PdG/NhH2-E(I), GRS-CQ6.0PdG/NhH2-E(I), GRS-CQ8.0PdG/ NhH2-E(I), GRS-CQ10PdG/NhH2-E(I), GRS-CQ12PdG/NhH2-E(I), GRS- Liquid-side Pipe CQ14PdG/NhH2-E(I), GRS-CQ16PdG/NhH2-E(I), GRS-CQ8.0PdG/NhH2-M(I), GRS-CQ10PdG/NhH2-M(I), GRS-CQ12PdG/NhH2-M(I), GRS-CQ14PdG/NhH2- M(I), GRS-CQ16PdG/NhH2-M(I) GRS-CQ8.0PdG/NhH2-M(I), GRS-CQ10PdG/NhH2-M(I), GRS-CQ4.0PdG/ Gas-side Pipe NhH2-E(I), GRS-CQ6.0PdG/NhH2-E(I), GRS-CQ8.0PdG/NhH2-E(I), GRS-...

  • Page 25: Water Volume And Pump Capacity (With Pump)

    Air-to-water Heat Pump All in One Versati SPLIT TYPE (4) As shown in the figure below, the drain connector is located at the right lower side of the unit. The user is needed to connect the drain pipe to the drain connector for guiding water out. 7.5 Water volume and pump capacity (with pump) All-in-one Versati Note...

  • Page 26: Water Volume And Expansion Vessel Pressure

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 7.6 Water volume and expansion vessel pressure Notes (a) The expansion vessel is 10 liter and 1bar pre-pressurized; (b) Total water volume of 280 liter is default; if total water is changed because of installation condition, the pre- pressure should be adjusted to secure proper operation.

  • Page 27: Selection Of Expansion Vessel

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Example 2: The indoor unit is installed on the highest spot of the water system and the total water volume is 350L. As the volume of water system is higher than 280L, it is necessary to adjust the pressure of the expansion vessel be lower.

  • Page 28: Connection Of Pipelines

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 8. Connection of Pipelines 8.1 Connection of outlet pipe for indoor & outdoor unit (1) Align the expansion end of copper pipe with the center of threaded joint. Tighten the flaring nuts with your hands.
  • Page 29 Air-to-water Heat Pump All in One Versati SPLIT TYPE Pipe size Length A Elevation B Additional (Diameter:Φ) Model refrigerant Liquid Standard Max. Standard Max. GRS-CQ4.0PdG/NhH2-E 1/2" 1/4" 16g/m GRS-CQ6.0PdG/NhH2-E 1/2" 1/4" 16g/m GRS-CQ8.0PdG/NhH2-E 1/2" 1/4" 0g/m GRS-CQ10PdG/NhH2-E 1/2" 1/4" 0g/m GRS-CQ8.0PdG/NhH2-M 1/2"...

  • Page 30: Remote Air Temperature Sensor

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Pipe size Length A Elevation B Additional (Diameter:Φ) Model refrigerant Liquid Standard Max. Standard Max. GRS-CQ14PdG/NhH2-E 5/8" 1/4" 0g/m GRS-CQ16PdG/NhH2-E 5/8" 1/4" 0g/m Notes (a) No additional charge of the refrigerant is need when the pipe length is less than 10m, if the pipe length is longer than 10m, additional charge of the refrigerant is needed according to the table.

  • Page 31: Thermostat

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Notes (a) Distance between the indoor unit and the remote air temperature sensor should be less than 15m due to length of the connection cable of remote air temperature sensor; (b) Height from floor is approximately 1.5m; (c) Remote air temperature sensor cannot be located where the area may be hidden when door is open;...

  • Page 32: Way Valve

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Step 2. Find the terminal block and connect wires as below. 2-way 2-way 2-way valve 1 valve 1 valve 1 WARNING • Normal Open type should be connected to wire (OFF) and wire (N) for valve closing in cooling mode. •...

  • Page 33: Gate-Controller

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Step 2. Electric wiring work Other thermal L and N connect to XT2~1,2. T-optional sensor T-optional sensor (accessory) Other thermal Step 3. Wired controller setting Other thermal should be selected "with" if necessarily from COMMISION → FUNCTION, then set switch on (outdoor)temperature and control logic(1/2/3).

  • Page 34: Refrigerant Collecting

    Air-to-water Heat Pump All in One Versati SPLIT TYPE (4) After confirming that there is no leakage from the system, when the compressor is not in operation, charge additional R32 working fluid with specified amount to the unit through the filling opening of the liquid pipe valve of the outdoor unit.

  • Page 35: Handling Of The Unit

    Air-to-water Heat Pump All in One Versati SPLIT TYPE WARNING • When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes. • If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal injury, etc.

  • Page 36: Wring Diagram

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 18. Wring Diagram 18.1 Control Board (1) GRS-CQ4.0PdG/NhH2-E (I), GRS-CQ6.0PdG/NhH2-E(I), GRS-CQ8.0PdG/NhH2-E(I), GRS-CQ10PdG/ NhH2-E(I), GRS-CQ8.0PdG/NhH2-M(I), GRS-CQ10PdG/NhH2-M(I), GRS-CQ12PdG/NhH2-M(I), GRS- CQ14PdG/NhH2-M(I), GRS-CQ16PdG/ NhH2-M(I), GRS-CQ12PdG/NhH2-E(I), GRS-CQ14PdG/NhH2-E(I), GRS-CQ16PdG/NhH2-E(I) X24 X23 X22 X21 X20 X34 X33 X32 X31 X30 X29 X28 X27 CN20 AC-L CN21...
  • Page 37 Air-to-water Heat Pump All in One Versati SPLIT TYPE Silk Screen Introduction 3-way valve signal CN18 Build-in water pump signal(PWM) CN19 Back-up water pump signal(PWM)-field supply CN15 20K temperature sensor (inlet water) CN15 20K temperature sensor (outlet water) CN15 20K temperature sensor (refrigerant liquid line) CN16 20K temperature sensor (refrigerant vapor line) CN16...
  • Page 38 Air-to-water Heat Pump All in One Versati SPLIT TYPE (2) GRS-CQ4.0PdG/NhH2-E (O), GRS-CQ6.0PdG/NhH2-E(O) AC-L HEAT-B 2WAY HEAT-C LPS-H T-SENSOR2 OFAN LPS-C 4WAY T-SENSOR1 Silk Screen Introduction AC-L Live wire input of power supply Neutral wire input of power supply To the ground HEAT-B Bottom band heater HEAT-C...
  • Page 39 Air-to-water Heat Pump All in One Versati SPLIT TYPE (3) GRS-CQ8.0PdG/NhH2-E(O), GRS-CQ10PdG/NhH2-E(O) AC-L AC-N HEAT VA-1 H_PRES S COM- ES PE1 COM- ES PE2 PWR1 DC-M OTORO1 DC-M OTORO T-SE NSOR3 T-SE NSOR2 T-SE NSOR1 Silk Screen Introduction AC-L Live wire of power supply Neutral wire of power supply PWR1 Reserved...
  • Page 40 Air-to-water Heat Pump All in One Versati SPLIT TYPE N-OUT COMM L-OUT AC-L Silk Screen Introduction AC-L Live line input Neutral line input L-OUT Live line output N-OUT Neutral line output COMM Communication To compressor phase U To compressor phase V To compressor phase W (4) GRS-CQ8.0Pd/NhH-M(O), GRS-CQ10Pd/NhH-M(O) COMM...
  • Page 41 Air-to-water Heat Pump All in One Versati SPLIT TYPE (5) GRS-CQ12Pd/NhH-E(O), GRS-CQ14Pd/NhH-E(O), GRS-CQ16Pd/NhH-E(O) COMM DC-BUS1 L2-1 L1-2 COMP L2-2 L1-1 AC-L DC-BUS Silk Screen Introduction AC-L L-OUT Live line input of the filter board N-OUT Neutral line input of the filter board L1-1 To PFC inductor brown line L1-2...

  • Page 42: Electric Wiring

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Silk Screen Specification Connector to the compressor phase-W Connector to the compressor phase-U Connector to the compressor phase-V Connector to reactor (input) Connector to reactor (input) Connector to filter L1-F Connector to filter L2-F Connector to filter L3-F COMM1 Reserved...
  • Page 43 Air-to-water Heat Pump All in One Versati SPLIT TYPE Minimum Leakage Minimum Sectional Sectional Power Supply Switch Area of Earth Wire Area of Power Model Supply Wire V,Ph,Hz GRS-CQ8.0Pd/NhH-M(O) GRS-CQ10Pd/NhH-M(O) GRS-CQ8.0PdG/NhH2-M(I) GRS-CQ10PdG/NhH2-M(I) GRS-CQ12Pd/NhH-M(O) 400V 3N~,50Hz GRS-CQ14Pd/NhH-M(O) GRS-CQ16Pd/NhH-M(O) GRS-CQ12PdG/NhH2-M(I) GRS-CQ14PdG/NhH2-M(I) GRS-CQ16PdG/NhH2-M(I) GRS-CQ12Pd/NhH-E(O) GRS-CQ14Pd/NhH-E(O) GRS-CQ16Pd/NhH-E(O)
  • Page 44 Air-to-water Heat Pump All in One Versati SPLIT TYPE and regulations. (e) Ensure safe grounding and the grounding wire shall be connected with the special grounding equipment of the building and must be installed by professional technicians. (f) The specifications of the breaker and power cable listed in the table above are determined based on the maximum power (maximum amps) of the unit.
  • Page 45 Air-to-water Heat Pump All in One Versati SPLIT TYPE GRS-CQ8.0PdG/NhH2-M(I), GRS-CQ10PdG/NhH2-M(I), GRS-CQ12PdG/NhH2-M(I), GRS-CQ14PdG/ • NhH2-M(I), GRS-CQ16PdG/NhH2-M(I) (2) Wiring diagram: outdoor unit GRS-CQ4.0Pd/NhH2-E(O), GRS-CQ6.0Pd/NhH2-E(O) •...
  • Page 46 Air-to-water Heat Pump All in One Versati SPLIT TYPE GRS-CQ8.0Pd/NhH2-E(O), GRS-CQ10Pd/NhH2-E(O) • Power CODE NAME Indoor unit main board Outdoor unit main board Drive board Communication interface Board Filter board COMP1 Compressor Compressor band heater Bottom band heater EKV1 Main electronic expansion valve coil EKV2 Auxiliary electronic expansion valve coil AC-L...
  • Page 47 Air-to-water Heat Pump All in One Versati SPLIT TYPE GRS-CQ12Pd/NhH-M(O) , GRS-CQ14Pd/NhH-M(O), GRS-CQ16Pd/NhH-M(O) • GRS-CQ12Pd/NhH-E(O) , GRS-CQ14Pd/NhH-E(O), GRS-CQ16Pd/NhH-E(O) •...
  • Page 48 Air-to-water Heat Pump All in One Versati SPLIT TYPE 18.2.3 Terminal Board (1) GRS-CQ4.0PdG/NhH2-E(I), GRS-CQ6.0PdG/NhH2-E(I), GRS-CQ8.0PdG/NhH2-E(I), GRS-CQ10PdG/ NhH2-E(I), GRS-CQ12PdG/NhH2-E(I) , GRS-CQ14PdG/NhH2-E(I), RS-CQ16PdG/NhH2-E(I) Terminal board XT2 10 2 12 13 14 15 16 17 20 21 20 25 26 Other Thermostat 3-way Pump Control Gate-...
  • Page 49 Air-to-water Heat Pump All in One Versati SPLIT TYPE (2) GRS-CQ8.0PdG/NhH2-M(I), GRS-CQ10PdG/NhH2-M(I), GRS-CQ12PdG/NhH2-M(I) , GRS-CQ14PdG/ NhH2-M(I), GRS-CQ16PdG/NhH2-M(I) Terminal board XT2 10 2 12 13 14 15 16 17 20 21 20 25 26 27 28 11 2 Other Thermostat Gate- Water Pump Water tank...

  • Page 50: Commissioning

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 19. Commissioning 19.1 Check before startup For safety of users and unit, the unit must be started up for check before debugging. The procedures are as below: The following items shall be performed by qualified repair persons. Confirm together with the sales engineer, dealer, installing contractor and customers for the following items finished or to be finished.

  • Page 51: Test Run

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 19.2 Test run Test run is testing whether the unit can run normally via preoperation. If the unit cannot run normally, find and solve problems until the test run is satisfactory. All inspections must meet the requirements before performing the test run.

  • Page 52: Daily Operation And Maintenance

    Therefore, once the water tank has been installed, the water tank must be set to ‘’With”, otherwise GREE will not be responsible for this abnormal operation. Never frequently make the unit on/off and close the manual valve of the water system during operation of the unit by users.

  • Page 53: Recovery

    Air-to-water Heat Pump All in One Versati SPLIT TYPE Malfunctions Reasons Troubleshooting Enhance heat insulation efficiency of the Poor heat insulation of water system. system. Poor heat exchange of evaporator. Poor efficiency of hot water Check if air in or out of unit is normal and Poor refrigerant of unit.

  • Page 54: Safety Consideration

    Air-to-water Heat Pump All in One Versati SPLIT TYPE j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off. k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.
  • Page 55 Air-to-water Heat Pump All in One Versati SPLIT TYPE The pressure-relief device is to be operated regularly to remove lime deposits and to verify that it is not blocked A discharge pipe connected to the pressure-relief device is to be installed in a continuously downward direction and in a frost-free environment.

  • Page 56: Notice Before Seasonal Use

    Air-to-water Heat Pump All in One Versati SPLIT TYPE 20.4 Notice before Seasonal Use (1) Check whether air inlets and air outlets of indoor and outdoor units are blocked; (2) Check whether ground connection is reliable or not; (3) If unit starts up after not operating for a long time, it should be power on 8 hours before operation starts so as to preheat the outdoor compressor;...

  • Page 57: External Water Pump And Three-Way Valve

    Air-to-water Heat Pump All in One Versati SPLIT TYPE When the ambient temperature is lower than -15°C, the highest leaving water temperature of the water tank is 50°C. 21 External Water Pump and Three-way Valve When the internal water pump fails because of insufficient pump head or others, an external water pump is required.
  • Page 58 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 global@cn.gree.com www.gree.com...

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