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SPLIT
TYPE
Change for life
Owner's Manual
Original Instructions
Air Conditioners
Air-to-water Heat Pump Split Versati
Models:
GRS-CQ8.0Pd/NhH-M
GRS-CQ10Pd/NhH-M
GRS-CQ12Pd/NhH-M
GRS-CQ14Pd/NhH-M
GRS-CQ16Pd/NhH-M
GRS-CQ4.0Pd/NhH2-E
GRS-CQ6.0Pd/NhH2-E
GRS-CQ8.0Pd/NhH2-E
GRS-CQ10Pd/NhH2-E
GRS-CQ12Pd/NhH-E
GRS-CQ14Pd/NhH-E
GRS-CQ16Pd/NhH-E
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Table of Contents
Related Manuals for Gree Versati III GRS-CQ4.0Pd/NhH2-E
Summary of Contents for Gree Versati III GRS-CQ4.0Pd/NhH2-E
- Page 1 SPLIT TYPE Change for life Owner's Manual Original Instructions Air Conditioners Air-to-water Heat Pump Split Versati Models: GRS-CQ8.0Pd/NhH-M GRS-CQ10Pd/NhH-M GRS-CQ12Pd/NhH-M GRS-CQ14Pd/NhH-M GRS-CQ16Pd/NhH-M GRS-CQ4.0Pd/NhH2-E GRS-CQ6.0Pd/NhH2-E GRS-CQ8.0Pd/NhH2-E GRS-CQ10Pd/NhH2-E GRS-CQ12Pd/NhH-E GRS-CQ14Pd/NhH-E GRS-CQ16Pd/NhH-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...
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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 ................. 9 3. Nomenclature......................10 4. Installation Example ..................... 12 5. Main Components ....................15 5.1 Indoor unit ........................15 5.2 Outdoor unit ........................16 6. - Page 4 18.2 Outline dimension and parameter of water tank ............34 18.3 Connection of waterway system ...................35 18.4 Electric wiring work ......................37 19. Wring Diagram ....................... 38 19.1 Control board ........................38 19.2 Electric wiring ........................46 20. Commissioning...................... 49 20.1 Check before startup .....................49 20.2 Test run .........................50 21.
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Page 5: Safety Notices (Please Be Sure To Abide )
Air-to-water Heat Pump Split 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 Split 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 Split 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 Split 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 Split 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 Split 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 Split 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 pressures...
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Page 12: Diagram Of The Operating Principle
Air-to-water Heat Pump Split Versati SPLIT TYPE 1. Diagram of the Operating Principle Economizer Notes (a) Water mixing accessories are optional parts. When they are required, please contact the manufacturer. (b) The 3-way valve to be installed on site should be controlled by the user. -
Page 13: Operating Principle Of The Unit
Air-to-water Heat Pump Split Versati SPLIT TYPE 2. Operating Principle of the Unit DC Inverter Air to Water Heat Pump is composed of outdoor unit, indoor unit and internal-fan coil water tank. Operation functions: (1) Cooling; (2) Heating; (3) Water heating; (4) Cooling + water heating;... -
Page 14: Nomenclature
3. Nomenclature Description Options GREE G-GREE Air to Water Heat Pump Heating Mode S= Static; C=Circulating Function Q=Multi-function;... - Page 15 Air-to-water Heat Pump Split Versati SPLIT TYPE Model Line-Up Capacity Model name Power supply Heating Cooling GRS-CQ8.0Pd/NhH-M GRS-CQ10Pd/NhH-M 400V 3N~,50Hz GRS-CQ12Pd/NhH-M GRS-CQ14Pd/NhH-M 12.6 GRS-CQ16Pd/NhH-M 15.5 GRS-CQ4.0Pd/NhH2-E GRS-CQ6.0Pd/NhH2-E GRS-CQ8.0Pd/NhH2-E GRS-CQ10Pd/NhH2-E 9.35 230V,~,50Hz GRS-CQ12Pd/NhH-E GRS-CQ14Pd/NhH-E 12.6 GRS-CQ16Pd/NhH-E 15.5 Notes Capacities and power inputs are based on the following conditions: Indoor Water Temperature 30°C/35°C, Outdoor Air Temperature 7°C DB/6°C WB;...
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Page 16: Installation Example
Air-to-water Heat Pump Split Versati SPLIT TYPE 4. Installation Example CASE 1: Connecting Under-floor Coil for Heating and Cooling 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; (c) The bypass valve must be installed to secure enough water flow rate, and should be installed at the collector. - Page 17 Air-to-water Heat Pump Split Versati SPLIT TYPE CASE 2: Connecting Sanitary Water Tank and Under-floor Coil Notes (a) The two-way valve is very important to prevent dew condensation on the floor while cooling mode (b) In this case, three-way valve should be installed and should be complied with installation of this manual; (c) Anitary water tank should be equipped with internal electric heater to secure enough heat energy in the very cold days.
- Page 18 Air-to-water Heat Pump Split Versati SPLIT TYPE CASE 3 : Connecting Sanitary Water Tank, Under-floor Coil and FCU Notes (a) The two-way valve is very important to prevent dew condensation on the floor and FCU while cooling mode (b) In this case, three-way valve should be installed and should be complied with installation of this manual; (c) Anitary water tank should be equipped with internal electric heater to secure enough heat energy in the very cold days.
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Page 19: Main Components
Air-to-water Heat Pump Split Versati SPLIT TYPE 5. Main Components 5.1 Indoor unit (1) GRS-CQ8.0Pd/NhH-M(I), GRS-CQ10Pd/NhH-M(I), GRS-CQ12Pd/NhH-M(I), GRS-CQ14Pd/NhH-M(I), GRS-CQ16Pd/NhH-M(I), GRS-CQ4.0Pd/NhH2-E(I),GRS-CQ6.0Pd/NhH2-E(I),GRS-CQ8.0Pd/NhH2-E(I), GRS-CQ10Pd/NhH2-E(I), GRS-CQ12Pd/NhH-E(I), GRS-CQ14Pd/NhH-E(I), GRS-CQ16Pd/NhH-E(I) External Internal... -
Page 20: Outdoor Unit
Air-to-water Heat Pump Split Versati SPLIT TYPE 5.2 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), GRS-CQ8.0Pd/NhH-M(O), GRS-CQ10Pd/NhH-M(O) External Control Box DC Fan Motor Compressor Internal... -
Page 21: Installation Guideline Of Outdoor Unit
Air-to-water Heat Pump Split 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) 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 22 Air-to-water Heat Pump Split 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), GRS-CQ8.0Pd/NhH-M(O), GRS-CQ10Pd/NhH-M(O)
- Page 23 Air-to-water Heat Pump Split 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) Description: Unit: inch Name Remarks GRS-CQ4.0Pd/NhH2-E,GRS-CQ6.0Pd/NhH2-E,GRS-CQ8.0Pd/NhH2-E,GRS- Liquid-side Service CQ10Pd/NhH2-E,GRS-CQ8.0Pd/NhH-M, GRS-CQ10Pd/NhH-M, GRS-CQ12Pd/ Valve NhH-M, GRS-CQ14Pd/NhH-M, GRS-CQ16Pd/NhH-M, GRS-CQ12Pd/NhH-E, GRS-CQ14Pd/NhH-E, GRS-CQ16Pd/NhH-E GRS-CQ4.0Pd/NhH2-E,GRS-CQ6.0Pd/NhH2-E,GRS-CQ8.0Pd/NhH2-E,GRS- Gas-side Service Valve CQ10Pd/NhH2-E,GRS-CQ8.0Pd/NhH-M, GRS-CQ10Pd/NhH-M, GRS-CQ12Pd/NhH-M, GRS-CQ14Pd/NhH-M, GRS-CQ16Pd/NhH-M, Gas-side Service Valve GRS-CQ12Pd/NhH-E, GRS-CQ14Pd/NhH-E, GRS-CQ16Pd/NhH-E...
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Page 24: Installation Of Indoor Unit
Air-to-water Heat Pump Split Versati SPLIT TYPE (4) Requirements on installation space dimension of unit’s bodies are shown in following drawing. (5) Outdoor unit must be lifted by using designated lifting hole. Take care to protect the unit during lift. To avoid rusting, do not knock the metal parts. -
Page 25: Installation Process Of Indoor Unit
Air-to-water Heat Pump Split Versati SPLIT TYPE 7.3 Installation process of indoor unit Step1:Drill holes on the wall in the following drawing. Wall Wall Step2:Install expansion bolts and forecasted pannel. Mounting bracket Anchor bolt X3 Wall Wall Step3: Attaching indoor unit to the wall. Wall Insulation pad Note NOTE... -
Page 26: Outline Dimension Of Indoor Unit
Air-to-water Heat Pump Split Versati SPLIT TYPE 7.4 Outline dimension of indoor unit Description: Unit: inch Name Remarks Leaving Water Pipe 1″Male BSP Returning Water Pipe 1″Male BSP GRS-CQ4.0Pd/NhH2-E,GRS-CQ6.0Pd/NhH2-E,GRS-CQ8.0Pd/NhH2-E,GRS- CQ10Pd/NhH2-E,GRS-CQ8.0Pd/NhH-M, GRS-CQ10Pd/NhH-M, GRS-CQ12Pd/ Liquid-side Pipe NhH-M, GRS-CQ14Pd/NhH-M, GRS-CQ16Pd/NhH-M, GRS-CQ12Pd/NhH-E, GRS-CQ14Pd/NhH-E, GRS-CQ16Pd/NhH-E GRS-CQ4.0Pd/NhH2-E,GRS-CQ6.0Pd/NhH2-E,GRS-CQ8.0Pd/NhH2-E,GRS- Gas-side Pipe CQ10Pd/NhH2-E, GRS-CQ8.0Pd/NhH-M, GRS-CQ10Pd/NhH-M... -
Page 27: Water Volume And Pump Capacity (With Pump)
Air-to-water Heat Pump Split Versati SPLIT TYPE 7.6 Water volume and pump capacity (with pump) (1) GRS-CQ4.0Pd/NhH2-E,GRS-CQ6.0Pd/NhH2-E,GRS-CQ8.0Pd/NhH2-E,GRS-CQ10Pd/NhH2-E, GRS- CQ8.0Pd/NhH-M, GRS-CQ10Pd/NhH-M (2) GRS-CQ12Pd/NhH-M, GRS-CQ14Pd/NhH-M, GRS-CQ16Pd/NhH-M，GRS-CQ12Pd/NhH-E, GRS- CQ14Pd/NhH-E, GRS-CQ16Pd/NhH-E Note See the curve above for the maximum external static pressure. The water pump is of variable frequency. And during operation, the water pump will adjust its output based on the actual load. -
Page 28: Water Volume And Expansion Vessel Pressure
Air-to-water Heat Pump Split Versati SPLIT TYPE 7.7 Water volume and expansion vessel pressure Maximum total water volume(liter) Notes (a) The expansion vessel is 10 liters and 1bar pre-pressurized; (b) Total water volume of 280 liters is default; if total water is changed because of installation condition, the pre-pressure should be adjusted to secure proper operation. -
Page 29: Connection Of Pipeline
Air-to-water Heat Pump Split Versati SPLIT TYPE Water expansion factor in different temperature Temperature(°C) Expansion factor (e) 0.0227 0.0258 0.029 0.0324 0.0359 0.0396 0.0434 8. Connection of Pipeline 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 30 Air-to-water Heat Pump Split Versati SPLIT TYPE No clearance Indoor unit Outdoor unit Indoor unit Outdoor unit Outdoor unit Indoor unit Oil bend Pipe size Length B Elevation A Additional (Diameter:Φ) Model refrigerant Liquid Standard Max. Standard Max. GRS-CQ8.0Pd/NhH-M 1/2" 1/4"...
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Page 31: Remote Air Temperature Sensor
Air-to-water Heat Pump Split Versati SPLIT TYPE Pipe size Length B Elevation A Additional (Diameter:Φ) Model refrigerant Liquid Standard Max. Standard Max. GRS-CQ4.0Pd/NhH2-E 1/2" 1/4" 0g/m GRS-CQ6.0Pd/NhH2-E 1/2" 1/4" 0g/m GRS-CQ8.0Pd/NhH2-E 1/2" 1/4" 0g/m GRS-CQ10Pd/NhH2-E 1/2" 1/4" 0g/m GRS-CQ12Pd/NhH-E 5/8" 1/4"... -
Page 32: Thermostat
Air-to-water Heat Pump Split 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 33: Way Valve
Air-to-water Heat Pump Split Versati SPLIT TYPE 11. 2-Way Valve The role of 2-way valve 1 is to control the water flow into the underfloor loop. When “Floor Config” is set to “With” for either cooling or heating operation, it will keep open. When “Floor Config” is set to “ Without”, it will keep closed. General Information Type Power... -
Page 34: Other Auxiliary Heat Sources
Air-to-water Heat Pump Split Versati SPLIT TYPE 3-Way Valve 1 WARNING • The 3-way valve should select water tank loop when electric power is supplied to wire (OFF) and wire (N). • The 3-way valve should select under floor loop when electric power is supplied to wire (ON) and wire (N). •... -
Page 35: Gate-Controller
Air-to-water Heat Pump Split Versati SPLIT TYPE 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). 14. Gate-controller If there is gate control function, installation guide follow as: 220VAC 15. -
Page 36: Refrigerant Collecting
Air-to-water Heat Pump Split Versati SPLIT TYPE With siphon tube No siphon tube WARNING • When charging is interrupted or finished, reinspect the unit but do not let the compressor run into operation. NOTE • Do not use mixture of refrigerant vapor and air or oxygen for pressurizing for fear of explosion. 16. -
Page 37: Handling Of The Unit
Air-to-water Heat Pump Split Versati SPLIT TYPE 17. Handling of the Unit During installing or moving the unit, other substances except refrigerant cannot get into the refrigerant pipe and there shall not be air remained in the pipe. If air or other substance gets into the pipe, system pressure will increase and compressor will be damaged. Do not charge refrigerant of other type into the unit during installing or moving. -
Page 38: Outline Dimension And Parameter Of Water Tank
Air-to-water Heat Pump Split Versati SPLIT TYPE There should be water pipe, hot water joint and floor drain near the water tank in favor of water replenishment, hot water supply and drainage of water tank. Connection of inlet/outlet waterway: Connect the safety check valve attached with the unit (with the arrow on it pointing at the water tank) with the water inlet of water tank with PPR pipe according to the following figure, sealing with unsintered tape. -
Page 39: Connection Of Waterway System
Air-to-water Heat Pump Split Versati SPLIT TYPE Model SXTVD300LC/B-E SXTVD300LC/B-M G(mm) I(mm) J(mm) K(mm) L(mm) Model SXTVD300LC/B-E SXTVD300LC/B-M Outline (Diameter×H) (mm) Φ620×1585 Φ620×1585 Package (W×D×H)(mm) 815×920×1745 815×920×1745 Net weight Gross weight Joints dimension Description Joint pipe thread Hot water outlet of water tank 3/4″Female BSP Circulating water inlet/outlet of water tank 3/4″Female BSP... - Page 40 Air-to-water Heat Pump Split Versati SPLIT TYPE Indoor unit Water tank Hot water outlet Temp sensor Power cord of the booster heater Check Safety joint Filter valve valve Cooling water inlet Cut-off valve Drainage Description Joint pipe thread Circulating water inlet/outlet of main unit 1″Male BSP Cooling water inlet of water tank 3/4″Female BSP...
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Page 41: Electric Wiring Work
Air-to-water Heat Pump Split Versati SPLIT TYPE (f) During using, the cut-off valve of cooling water inlet of water tank should be kept normally on. 18.4 Electric wiring work 18.4.1 Wiring principle General principles (1) Wires, equipment and connectors supplied for use on the site must be in compliance with provisions of regulations and engineering requirements. -
Page 42: Wring Diagram
Air-to-water Heat Pump Split Versati SPLIT TYPE Notes (a) Leakage Switch is necessary for additional installation. If circuit breakers with leakage protection are in use, action response time must be less than 0.1 second, leakage circuit must be 30mA. (b) The above selected power cable diameters are determined based on assumption of distance from the distribution cabinet to the unit less than 75m. - Page 43 Air-to-water Heat Pump Split Versati SPLIT TYPE Silk screen Introduction AC-L Live wire of power supply Neutral wire of power supply To the ground E-heater of water tank E-heater 1 E-heater 2 Other thermal by 220VAC Reserved Reserved Reserved 2-way valve 1 is normally open 2-way valve 1 is normally closed Reserved Reserved...
- Page 44 Air-to-water Heat Pump Split Versati SPLIT TYPE 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 Compressor band heater 2WAY...
- Page 45 Air-to-water Heat Pump Split Versati SPLIT TYPE (2) GRS-CQ8.0Pd/NhH2-E, GRS-CQ10Pd/NhH2-E, GRS-CQ8.0Pd/NhH-M, GRS-CQ10Pd/NhH-M, GRS- CQ12Pd/NhH-M, GRS-CQ14Pd/NhH-M, GRS-CQ16Pd/NhH-M, GRS-CQ12Pd/NhH-E, GRS-CQ14Pd/NhH-E, GRS-CQ16Pd/NhH-E X24 X23 X22 X21 X20 X34 X33 X32 X31 X30 X29 X28 X27 CN20 AC-L CN21 CN22 CN23 CN24 CN26 CN25 CN10 CN16 CN15...
- Page 46 Air-to-water Heat Pump Split Versati SPLIT TYPE Silk screen Introduction CN19 20K temperature sensor (outlet water) CN15 20K temperature sensor (refrigerant liquid line) CN15 20K temperature sensor (outlet water) CN15 20K temperature sensor (refrigerant liquid line) CN16 20K temperature sensor (refrigerant vapor line) CN16 10K temperature sensor (leaving water for the optional electric heater) CN16...
- Page 47 Air-to-water Heat Pump Split Versati SPLIT TYPE Silk screen Introduction VA-1 E-heater of chassis HEAT E-heater of cranke DC-MOTORO Reserved DC-MOTORO1 Fan motor EXV 1 EXV 2 T_SENSOR2 1,2: environment; 3,4:discharge; 5,6: suction T_SENSOR1 1,2: economizer inlet; 3,4: economizer outlet; 5,6:defrost H_PRESS High pressure sensor High pressure switch...
- Page 48 Air-to-water Heat Pump Split Versati SPLIT TYPE (4) GRS-CQ8.0Pd/NhH-M, GRS-CQ10Pd/NhH-M COMM DC-BUS X5 X6 X7 X8 X9 Silk screen Introduction X1/ X2/X3 Three-phase power input X4/ X5/X6 To one end of the reactor (input) X7/ X8/X9 To the other end of the reactor (output) U/V/W Connection terminal of the compressor Input port of the switching power...
- Page 49 Air-to-water Heat Pump Split Versati SPLIT TYPE Silk screen Introduction L1-2 To PFC inductor white line L2-1 To PFC inductor yellow line L2-2 To PFC inductor blue line COMP Wiring board (3-pin)(DT-66BO1W-03)(variable-frequency) COMM Communication interface[1-3.3V,2-TX,3-RX,4-GND] DC-BUS DC-BUS Pin for electric discharge of the high-voltage bar during test Power input of the drive board [1-GND,2-18V,3-15V] DC-BUS1 Pin for electric discharge of the high-voltage bar during test...
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Page 50: Electric Wiring
Air-to-water Heat Pump Split Versati SPLIT TYPE 19.2 Electric wiring 19.2.1 Wiring principle Refer to Section 18.4. 19.2.2 Terminal board (1) GRS-CQ8.0Pd/NhH-M(I), GRS-CQ10Pd/NhH-M(I), GRS-CQ12Pd/NhH-M(I) , GRS-CQ14Pd/NhH-M(I), GRS-CQ16Pd/NhH-M(I) Terminal board with the reserved grounding terminal... - Page 51 Air-to-water Heat Pump Split Versati SPLIT TYPE Terminal board without the reserved grounding terminal Notes: (a) For the terminal board with the reserved grounding terminal, the grounding line should be connected to the grounding terminal at the terminal board (b) For the terminal board without the reserved grounding terminal, the grounding line should be connected to the grounding terminal at the installation board.
- Page 52 Air-to-water Heat Pump Split Versati SPLIT TYPE GRS-CQ4.0Pd/NhH2-E ,GRS-CQ6.0Pd/NhH2-E ,GRS-CQ8.0Pd/NhH2-E ,GRS-CQ10Pd/NhH2-E GRS- CQ12Pd/NhH-E(I) , GRS-CQ14Pd/NhH-E(I), GRS-CQ16Pd/NhH-E(I)
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Page 53: Commissioning
Air-to-water Heat Pump Split Versati SPLIT TYPE 20. Commissioning 20.1 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 54: Test Run
Air-to-water Heat Pump Split Versati SPLIT TYPE 20.2 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 55: 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 56: Recovery
Air-to-water Heat Pump Split 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 57: Safety Consideration
Air-to-water Heat Pump Split 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 58 Air-to-water Heat Pump Split Versati SPLIT TYPE Pressure relief of the water tank The water may drip from the discharge pipe of the pressure-relief device and that this pipe must be left open to the atmosphere. 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.
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Page 59: Notice Before Seasonal Use
Air-to-water Heat Pump Split Versati SPLIT TYPE ② ③ ① ④ ①Tee joint ⑤ ②Safety valve ③Pressure maintaining valve ④Filter ⑤Cut-off valve Drainage Installation Mode 3 of the Tap Water Safety Valve (Inlet Water Pressure>0.5MPa) A pressure maintaining valve is required in the installation mode 3 to make sure the water tank pressure keep within 0.3~0.5MPa. - Page 60 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...