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Change for life
Owner's Manual
Original Instructions
Air Conditioners
Air-to-water Heat Pump
GRS-CQ4.0Pd/NhG3-E
GRS-CQ6.0Pd/NhG3-E
GRS-CQ8.0Pd/NhG3-E
GRS-CQ10Pd/NhG3-E
GRS-CQ8.0Pd/NhG3-M
GRS-CQ10Pd/NhG3-M
GRS-CQ12Pd/NhG3-E
GRS-CQ14Pd/NhG3-E
GRS-CQ16Pd/NhG3-E
GRS-CQ12Pd/NhG3-M
GRS-CQ14Pd/NhG3-M
GRS-CQ16Pd/NhG3-M
GRS-CQ4.0Pd/NhG4-E
GRS-CQ6.0Pd/NhG4-E
GRS-CQ8.0Pd/NhG4-E
GRS-CQ10Pd/NhG4-E
GRS-CQ8.0Pd/NhG4-M
GRS-CQ10Pd/NhG4-M
GRS-CQ12Pd/NhG4-E
GRS-CQ14Pd/NhG4-E
GRS-CQ16Pd/NhG4-E
GRS-CQ12Pd/NhG4-M
GRS-CQ14Pd/NhG4-M
GRS-CQ16Pd/NhG4-M
MONOBLOC TYPE
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Summary of Contents for Gree GRS-CQ4.0Pd/NhG3-E
- Page 1 MONOBLOC TYPE Change for life Owner's Manual Original Instructions Air Conditioners Air-to-water Heat Pump GRS-CQ4.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG3-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-E GRS-CQ8.0Pd/NhG4-E GRS-CQ10Pd/NhG3-E GRS-CQ10Pd/NhG4-E GRS-CQ8.0Pd/NhG3-M GRS-CQ8.0Pd/NhG4-M GRS-CQ10Pd/NhG3-M GRS-CQ10Pd/NhG4-M GRS-CQ12Pd/NhG3-E GRS-CQ12Pd/NhG4-E GRS-CQ14Pd/NhG3-E GRS-CQ14Pd/NhG4-E GRS-CQ16Pd/NhG3-E GRS-CQ16Pd/NhG4-E GRS-CQ12Pd/NhG3-M GRS-CQ12Pd/NhG4-M GRS-CQ14Pd/NhG3-M GRS-CQ14Pd/NhG4-M GRS-CQ16Pd/NhG3-M GRS-CQ16Pd/NhG4-M...
- 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 ............... 10 2. Operating Principle of the Unit ................11 3. Nomenclature......................12 4. Installation Example ..................... 14 5. Main Components ....................16 6. - Page 4 18.2 Test run .........................49 19. Daily Operation and Maintenance ............... 50 19.1 Recovery ........................51 19.2 Decommissioning ......................51 19.3 Notice before seasonal use ..................52 19.4 Safety considerations ....................52 19.5 Maintenance of the water tank ..................53 19.6 Maintenance of the unit ....................54...
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Page 5: Safety Notices (Please Be Sure To Abide )
Air-to-water Heat Pump MONOBLOC 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 MONOBLOC 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 MONOBLOC 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 MONOBLOC 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 . There is the danger of fall of things or people.
- Page 9 Air-to-water Heat Pump MONOBLOC 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 MONOBLOC TYPE NOTE Appliance filled with flammable gas R32. Before use the appliance, read the owner’s manual first. 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.
- Page 11 Air-to-water Heat Pump MONOBLOC TYPE Maximum and minimum water operating temperatures Maximum Minimum water operating Item water operating temperatures temperatures Cooling 5°C 25°C Heating 20°C 65°C Water heating 40°C 80°C Maximum and minimum water operating pressures Minimum water operating Maximum water Item pressures operating pressures...
- Page 12 Air-to-water Heat Pump MONOBLOC TYPE NOTE If any hot work is to be conducted on the refrigeration equipment or any associated parts,appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO fire extinguisher adjacent to the charging area. Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.
- Page 13 Air-to-water Heat Pump MONOBLOC TYPE During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.
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Page 14: Diagram Of The Operating Principle
Air-to-water Heat Pump MONOBLOC TYPE 1. Diagram of the Operating Principle Note: the swimming pool, solar kit and water mixing accessory are optional parts. When they are required, please contact the manufacturer. -
Page 15: Operating Principle Of The Unit
Air-to-water Heat Pump MONOBLOC 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; (5) Heating+ water heating;... -
Page 16: Nomenclature
3. Nomenclature Description Options GREE G-GREE Air to water heat pump Heat Pump Water Heater Heating Mode S= Static; C=Circulating Function Q=Multi-function; Omit=Single-function Nominal Heating Capacity 4.0=4.0kW;... - Page 17 Air-to-water Heat Pump MONOBLOC TYPE Model Line-Up Model Heating1, kW Power Input, kW COP, W/W Power supply GRS-CQ4.0Pd/NhG3-E 5.00 0.926 5.40 GRS-CQ6.0Pd/NhG3-E 6.00 1.111 5.40 GRS-CQ8.0Pd/NhG3-E 8.20 1.54 5.32 GRS-CQ10Pd/NhG3-E 10.20 2.02 5.05 230VAC,1Ph,50Hz GRS-CQ12Pd/NhG3-E 12.0 2.43 4.93 GRS-CQ14Pd/NhG3-E 14.2 2.99...
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Page 18: Installation Example
Air-to-water Heat Pump MONOBLOC TYPE Model Cooling1 ,kW Power Input, kW EER, W/W Power supply GRS-CQ8.0Pd/NhG4-M 8.30 1.64 5.06 GRS-CQ10Pd/NhG4-M 10.20 2.13 4.79 GRS-CQ12Pd/NhG4-M 12.0 2.61 4.60 400VAC,3Ph,50Hz GRS-CQ14Pd/NhG4-M 13.9 3.32 4.19 GRS-CQ16Pd/NhG4-M 15.4 4.05 3.80 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;... - Page 19 Air-to-water Heat Pump MONOBLOC TYPE CASE 2: Connecting Sanitary Water Tank and Under-floor Coil Under-floor coil Sanitary water tank Booster heater Notes (a) In this case, three-way valve should be installed and should be complied with installation of this manual; (b) Sanitary should be equipped with internal electric heater to to secure enough heat energy in the very cold days.
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Page 20: Main Components
Air-to-water Heat Pump MONOBLOC TYPE 5. Main Components (1) For models below GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-E GRS-CQ10Pd/NhG3-E GRS-CQ12Pd/NhG3-E GRS-CQ14Pd/NhG3-E GRS-CQ16Pd/NhG3-E, GRS-CQ8.0Pd/NhG3-M GRS-CQ10Pd/NhG3-M GRS-CQ12Pd/NhG3-M GRS-CQ14Pd/NhG3-M GRS-CQ16Pd/NhG3-M GRS-CQ8.0Pd/NhG4-E GRS-CQ10Pd/NhG4-E GRS-CQ12Pd/NhG4-E GRS-CQ14Pd/NhG4-E GRS-CQ16Pd/NhG4-E GRS-CQ8.0Pd/NhG4-M GRS-CQ10Pd/NhG4-M GRS-CQ12Pd/NhG4-M GRS-CQ14Pd/NhG4-M GRS-CQ16Pd/NhG4-M 6. Installation Guideline of Monobloc Unit 6.1 Instruction to installation... -
Page 21: Installation Of Monobloc Unit
(5) Do not install at a place where flammable or explosive goods exist or a place subject to severe dust, salty fog and polluted air. 6.2.2 Outline dimension of monobloc unit (1) For models below GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E 1150... - Page 22 Air-to-water Heat Pump MONOBLOC TYPE Description: Unit: inch Name Remarks Handle Used to cover or uncover the front case Air discharge Grill 6.2.3 Space requirements for installation Inlet Inlet Outlet 2000 ＞ Outlet Note: In conderation of space restriction, for the left-handed figure, except the outlet side, distance between the unit and the nearest barrier at other three sides are allowed to be no less than 300mm;...
- Page 23 Air-to-water Heat Pump MONOBLOC TYPE 6.2.6 Safety operation of flammable refrigerant (1) Qualification requirement for installation and maintenance All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for using the flammable refrigerant.
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Page 24: Installation Of Hydraulic Unit
No fire source and smoking. Do comply with the local rules and laws. 7. Installation of Hydraulic Unit 7.1 Available external static pressure of outlet (1) GRS-CQ4.0Pd/NhG3-E, GRS-CQ6.0Pd/NhG3-E, GRS-CQ4.0Pd/NhG4-E,GRS-CQ6.0Pd/NhG4-E (2) GRS-CQ8.0Pd/NhG3-E, GRS-CQ10Pd/NhG3-E, GRS-CQ8.0Pd/NhG3-M, GRS-CQ10Pd/NhG3-M, GRS-CQ8.0Pd/NhG4-E, GRS-CQ10Pd/NhG4-E, GRS-CQ8.0Pd/NhG4-M, GRS-CQ10Pd/NhG4-M Notes (a) See the curve above for the maximum external static pressure. The water pump is of variable frequency. -
Page 25: Ambient Temperature And Leaving Water Temperature Upper Limit
Air-to-water Heat Pump MONOBLOC TYPE (3) GRS-CQ12Pd/NhG3-E, GRS-CQ14Pd/NhG3-E, GRS-CQ16Pd/NhG3-E, GRS-CQ12Pd/NhG3-M, GRS-CQ14Pd/NhG4-M, GRS-CQ16Pd/NhG4-M, GRS-CQ12Pd/NhG4-E, GRS-CQ14Pd/NhG4-E, GRS-CQ16Pd/NhG4-E, GRS-CQ12Pd/NhG4-M, GRS-CQ14Pd/NhG4-M, GRS-CQ16Pd/NhG4-M Notes (a) 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. 7.2 Ambient temperature and leaving water temperature upper limit Note:the ambient temperature and water temperature should be subject to the actual operation of the unit. -
Page 26: Water Volume And Expansion Vessel Pressure
Air-to-water Heat Pump MONOBLOC TYPE 7.3 Water volume and expansion vessel pressure 8/10/12/14/16kW Notes (a) The expansion vessel is 2 liters and 1.5bar pre-pressurized for 4/6kW units; 3 liters and 1.5bar per- pressurized for 8/10/12/14/16kW units; (b) Total water volume of 44 liters is default for 4/6kW units and 66 liters for 8/10/12/14/16kW unit; 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 MONOBLOC TYPE For 4/6units Water volume Installation height 1 difference <44L >44L 1. Pre-set pressure needs to be adjusted according to the above formula. ＜ 12m Adjustment is not necessary 2. Check if the water volume is lower than the maximum water volume. -
Page 28: Remote Air Temperature Sensor
Air-to-water Heat Pump MONOBLOC TYPE Water expansion factor in different temperature Temperature Expansion factor e ℃ 0.00013 0.00027 0.00177 0.00435 0.00782 0.0099 0.0121 0.0145 0.0171 0.0198 0.0227 0.0258 0.029 0.0324 0.0359 0.0396 0.0434 8. Remote Air Temperature Sensor Front side Back side Remote Air Temperature Sensor 1.5 Meters... -
Page 29: Thermostat
Air-to-water Heat Pump MONOBLOC TYPE Remote Air Environmen t Temp sensor Electric box 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;... -
Page 30: Way Valve
Air-to-water Heat Pump MONOBLOC TYPE 10. 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 31: Other Thermal
Air-to-water Heat Pump MONOBLOC TYPE 3-Way Valve 2 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 32: Optional Electric Heater
Air-to-water Heat Pump MONOBLOC TYPE Step 2. Electric wiring work Other thermal L and N connect to XT3~1,2. Optional water temperature sensor connecet to AP1 CN16. Optional water temperature sensor CN16 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 33: Gate-Controller
Air-to-water Heat Pump MONOBLOC TYPE Other Thermal Optional Water Temp. Sensor 3-Way Valve 2 2-Way Valve 1 Mixing Floor Valve Temp. Water Pump Tank Temp. of Heat pump system Water Tank EH Water Tank Step 2. Wired controller setting Optional electric heater should be selected "1/2" group if necessary from COMMISION → FUNCTION,then set switch on (outdoor)temperature and control logic(1/2). - Page 34 Air-to-water Heat Pump MONOBLOC TYPE Discharging: remove metal sheets of the outer casing, connect a hose to the charging valve and then discharge refrigerant. Charging valve 2 Charging valve 1 Notes (a) Discharge is allowed unless the unit has been stopped. (Cut off the power and repower it 1 minutes later) (b) Protective measures should be taken during discharging to avoid frost bites.
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Page 35: Installation Of Insulated Water Tank
Air-to-water Heat Pump MONOBLOC TYPE (6) If a leak is suspected, all naked flames shall be removed / extinguished. If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak. -
Page 36: Outline Dimension And Parameter Of Water Tank
Air-to-water Heat Pump MONOBLOC TYPE Notes (1) For safe use of water, water outlet/inlet of water tank must connect with a certain length of PPR pipe ,L ≥70×R2(cm, R is inside radius of the pipe). Moreover, heat preservation should be conducted and metal pipe cannot be used. -
Page 37: Connection Of Waterway System
Air-to-water Heat Pump MONOBLOC TYPE Model SXTVD300LC/B-E SXTVD300LC/B-M C(mm) E(mm) F(mm) 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 38 Air-to-water Heat Pump MONOBLOC TYPE Description Joint pipe thread Circulating water inlet/outlet of main unit 1″Male BSP Cooling water inlet of water tank 3/4″Female BSP Circulating water inlet/outlet of water tank 3/4″Female BSP Hot water outlet of water tank 3/4″Female BSP Code Name QTY.
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Page 39: Requirements On Water Quality
Air-to-water Heat Pump MONOBLOC TYPE 16.4 Requirements on water quality Paramete Parametric value Unit pH( 25°C) 6.8~8.0 Cloudy ＜ 1 Chloride ＜ 50 mg/L Fluoride ＜ 1 mg/L Iron ＜ 0.3 mg/L Sulphate ＜ 50 mg/L ＜ 30 mg/L Hardness(count CaCO ＜... - Page 40 Break Supply (Electric Area of Earth Wire Area of Power Wire Model Switch heater) Earth Wire (Electric Power Wire (Electric Heater) Heater) V,Ph,Hz GRS-CQ4.0Pd/NhG3-E 2×2.5 GRS-CQ6.0Pd/NhG3-E 2×2.5 GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-E GRS-CQ10Pd/NhG3-E 230VAC GRS-CQ12Pd/NhG3-E 2×6 GRS-CQ14Pd/NhG3-E 50Hz GRS-CQ16Pd/NhG3-E 2×6 GRS-CQ8.0Pd/NhG4-E GRS-CQ10Pd/NhG4-E...
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Page 41: Wring Diagram
(h) The specifications of the breaker listed in the table above are applied to the breaker with the working temperature at 40°C. If the working condition changes, they should be modified according to the related national standard. 17. Wring Diagram 17.1 Control board (1) For models below GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-E GRS-CQ10Pd/NhG3-E... - Page 42 Air-to-water Heat Pump MONOBLOC TYPE Silk Screen Introduction Water pump of the water tank Reserved Field supplied 3-way valve 1 Reserved Electric three-way valve 2 open Electric three-way valve 2 closed CN18 Build-in water pump signal(PWM) CN19 Back-up water pump signal(PWM)-field supply CN15 20K temperature sensor (inlet water) CN15...
- Page 43 Air-to-water Heat Pump MONOBLOC TYPE (2) For models below GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-E GRS-CQ10Pd/NhG3-E GRS-CQ12Pd/NhG3-E GRS-CQ14Pd/NhG3-E GRS-CQ16Pd/NhG3-E GRS-CQ8.0Pd/NhG4-E GRS-CQ10Pd/NhG4-E GRS-CQ12Pd/NhG4-E GRSCQ14Pd/NhG4-E GRS-CQ16Pd/NhG4-E GRS-CQ8.0Pd/NhG3-M GRS-CQ10Pd/NhG3-M GRS-CQ12Pd/NhG3-M GRS-CQ14Pd/NhG3-M GRS-CQ16Pd/ NhG3-M GRS-CQ8.0Pd/NhG4-M GRS-CQ10Pd/NhG4-M GRS-CQ12Pd/NhG4-M GRS-CQ14Pd/NhG4-M GRS-CQ16Pd/NhG4-M Silk Screen Introduction AC-L Live wire input of power supply...
- Page 44 1-pin:12V, 2-pin:B, 3-pin: A, 4-pin: ground, To the wired controller, communication cable; 1-pin:+12V, 2-pin:B; 3-pin:A, 4-pin: ground COM_ESPE1 1-pin:+3.3V, 2-pin:TXD, 3-pin:RXD, 4-pin:ground COM_ESPE2 1-pin:+3.3V, 2-pin:TXD, 3-pin:RXD, 4-pin:ground 1-pin: ground, 2-pin:+18V, 3-pin:+15V (3) For models below GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-E GRS-CQ10Pd/NhG3-E GRS-CQ12Pd/NhG3-E GRS-CQ14Pd/NhG3-E GRS-CQ16Pd/NhG3-E GRS-CQ8.0Pd/NhG4-E...
- Page 45 Air-to-water Heat Pump MONOBLOC TYPE (4) For models below GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-M GRS-CQ10Pd/NhG3-M GRS-CQ12Pd/NhG3-M GRS-CQ14Pd/NhG3-M GRS-CQ16Pd/NhG3-M GRS-CQ8.0Pd/NhG4-M GRS-CQ10Pd/NhG4-M GRS-CQ12Pd/NhG4-M GRSCQ14Pd/NhG4-M GRS-CQ16Pd/NhG4-M COMM COMM1 Silk Screen Introduction Connector to the compressor phase-W Connector to the compressor phase-U Connector to the compressor phase-V...
- Page 46 Air-to-water Heat Pump MONOBLOC TYPE (5) For models below GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E GRS-CQ8.0Pd/NhG3-E GRS-CQ10Pd/NhG3-E GRS-CQ12Pd/NhG3-E GRS-CQ14Pd/NhG3-E GRS-CQ16Pd/NhG3-E GRS-CQ8.0Pd/NhG4-E GRS-CQ10Pd/NhG4-E GRS-CQ12Pd/NhG4-E GRSCQ14Pd/NhG4-E GRS-CQ16Pd/NhG4-E EE 1 N-OUT L-OUT DC -BUS AC -L Silk Screen Introduction AC-L Live line input of the main board...
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Page 47: Electric Wiring
Connect to the power supply input of the drive board L3-F Neutral line for power supply to the main control board Live line for power supply to the main control board 17.2 Electric wiring 17.2.1 Wiring principle Refer to Section 16.5. 17.2.2 Terminal board GRS-CQ6.0Pd/NhG4-E (1) GRS-CQ4.0Pd/NhG3-E, GRS-CQ6.0Pd/NhG3-E, GRS-CQ4.0Pd/NhG4-E,... - Page 48 Air-to-water Heat Pump MONOBLOC TYPE (2) GRS-CQ8.0Pd/NhG3-E, GRS-CQ10Pd/NhG3-E,GRS-CQ12Pd/NhG3-E, GRS-CQ14Pd/NhG3-E, GRS- CQ16Pd/NhG3-E, GRS-CQ8.0Pd/NhG4-E, GRSCQ10Pd/NhG4-E,GRS-CQ12Pd/NhG4-E, GRSCQ14Pd/ NhG4-E, GRS-CQ16Pd/NhG4-E...
- Page 49 Air-to-water Heat Pump MONOBLOC TYPE (3) GRS-CQ8.0Pd/NhG3-M,GRS-CQ10Pd/NhG3-M, GRS-CQ8.0Pd/NhG4-M, GRS-CQ10Pd/NhG4-M Terminal board with the reserved grounding terminal...
- Page 50 Air-to-water Heat Pump MONOBLOC 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 51 Air-to-water Heat Pump MONOBLOC TYPE (4) GRS-CQ12Pd/NhG3-M, GRS-CQ14Pd/NhG3-M, GRS-CQ16Pd/NhG3-M, GRS-CQ12Pd/NhG4-M, GRS- CQ14Pd/NhG4-M, GRS-CQ16Pd/NhG4-M...
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Page 52: Commissioning
Air-to-water Heat Pump MONOBLOC TYPE 18. Commissioning 18.1 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 53: Test Run
Air-to-water Heat Pump MONOBLOC TYPE 18.2 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 54: 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 55: Recovery
Air-to-water Heat Pump MONOBLOC TYPE 19.1 Recovery When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. -
Page 56: Notice Before Seasonal Use
Air-to-water Heat Pump MONOBLOC TYPE 19.3 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 (4) Precautions for Freeze Protection in Winter Under subzero climatic conditions in winter, anti-freeze fluid must be added into the water cycle and external... -
Page 57: Maintenance Of The Water Tank
Air-to-water Heat Pump MONOBLOC TYPE ① ② ③ ① Safety valve ② Check valve ③ Filter Drainage Installation Mode 2 of the Tap Water Valve (Inlet Water Pressure<0.1MPa) The safety valve is bypass installed in the installation mode 2. A check valve is required at the tap water pipe and installed horizontally with the valve cap vertically upwards and the arrow direction at the valve body the same as the water flow. -
Page 58: Maintenance Of The Unit
Air-to-water Heat Pump MONOBLOC TYPE (6) Conduct water input for the water tank according to water input operation. (7) Water tank cleaning completed and energize it. 19.5.3 Mg-stick peplacement (1) To improve durability of the water tank, a Mg-Stick is installed inside the water tank. Generally, the Mg-Stick has a lifespan of two to three years. - Page 59 Air-to-water Heat Pump MONOBLOC TYPE Code Indication Error Name Source of Error Signal Control Description The plug on temperature ① sensor is not correctly connected to the socket It will be automatically Discharge temp sensor on mainboard. cleared after the failure is error The resistance of removed.
- Page 60 Air-to-water Heat Pump MONOBLOC TYPE Code Indication Error Name Source of Error Signal Control Description The communication line of ① the unit is not connected. The communication ② line is not through. The communication ③ Communication line of the unit is not It will be cleared once malfunction(between connected correctly.
- Page 61 Air-to-water Heat Pump MONOBLOC TYPE Code Indication Error Name Source of Error Signal Control Description The plug on temperature ① sensor is not correctly The first sanitary water connected to the socket It will be automatically tank temperature sensor on mainboard. cleared after the failure is error The resistance of...
- Page 62 Air-to-water Heat Pump MONOBLOC TYPE (2) Drive failure code Display on Nixie Tube Display on Wired Item Others of the Unit Controller Reset of Drive System Reset of Drive System Startup Failure of Startup Failure of Compressor Compressor Phase Protection Phase Protection Current protection of Current protection of...
- Page 63 Air-to-water Heat Pump MONOBLOC TYPE 19.6.2 Flow chart of troubleshooting (1) Comp high-pressure protection E1 Compressor high-pressure protection E1 Is the high-pressure switch Replace the high-pressure broken? switch. Is the wiring of the high-pressure Replace the wiring. switch loosened? Is water in the tank inadequate? Fill the tank with tank.
- Page 64 Air-to-water Heat Pump MONOBLOC TYPE (2) Comp Low- pressure protection E3 Compressor low-pressure protection E3 Is the low-pressure switch Replace or rewire broken or is the wiring loosened? the low pressure switch. Does the fan stop or run reversely? Check the fan. Repair the leakage and add refrigerant according Is the system leaked?
- Page 65 Air-to-water Heat Pump MONOBLOC TYPE (3) Comp discharge temp protection E4 Compressor discharge temperature Protection E4 Does the discharge Replace the discharge Is the resistance of the temperature reach 120°C? temperature sensor. sensor incorrect? Replace the mainboard of the outdoor unit. Is the electronic Replace the electronic expansion valve broken?
- Page 66 Air-to-water Heat Pump MONOBLOC TYPE (5) Temperature sensor error Temperature sensor error Is the plug of the temperature sensor correctly Inserted it resersely. inserted to the socket? Replace the Is the resistance of temperature sensor correct? temperature sensor. Replace the mainboard. (6) Communication malfunction E6 Communication error E6 Is the communication...
- Page 67 Air-to-water Heat Pump MONOBLOC TYPE is detected higher than 105°C. If the protection occurs for 6 times within one hour, it can not be resumed unless it is deenergized and reenergized. (7) Abnormal sensor of radiating fin: The protection occurs when break circuit or short circuit of the temperature sensor on top of the IPM module.
- Page 68 Air-to-water Heat Pump MONOBLOC TYPE (2) IPM protection The reasons may be: Untight screws of IPM module • damaged IPM module • defective radiating of IPM module • abnormal +15V power strip • abnormal PFC module • wire connection error with PFC •...
- Page 69 Air-to-water Heat Pump MONOBLOC TYPE (3) Trip Trip Is the leak switch tripped off? Does the switch capacity meet the requirement? Does it trip off upon energization? The system is abnormal. Install a electric The leakage current Check the compressor switch according to is large.
- Page 70 Air-to-water Heat Pump MONOBLOC TYPE (4) Abnormal Noise of PFC Inductor Generally, the continuous and minute sound of inductor is normal. Abnormal noise of PFC inductor refers to discontinuous and obvious noise. The reasons may be: PFC malfunction • abnormal output of driving board •...
- Page 71 Air-to-water Heat Pump MONOBLOC TYPE (5) Over-temperature Protection of Radiating Fin E5 is displayed on the wired controller. Nixie tube of Monitoring the mainboard display Over-temperature P8 is displayed. protection If the air outlet and retuan air Is the heat passages of the outdoor unit is dissipation of the blocked, the heat dissipation...
- Page 72 Air-to-water Heat Pump MONOBLOC TYPE (6) Overvoltage protection of DC bus E5 is displayed on the wired controller. Nixie tube of Monitoring the mainboard display Overvoltage PH is displayed. protection of the DC bus Is input voltage within the running range (185~264VAC)? Does it occur during operation of the...
- Page 73 Air-to-water Heat Pump MONOBLOC TYPE (7) Under-voltage Protection of DC bus E5 is displayed on the wired controller. Nixie tube on Monitoring the mainboard display Lack of voltage PL is displayed. protection Is the input voltage in the range of 185~264VAC? Does it occur during operation of the...
- Page 74 Air-to-water Heat Pump MONOBLOC TYPE 19.6.5 Disassembly of the unit Note: firstly please cut off the power supply and discharge refrigerant out of the unit. Operation Procedure Illustration GRS-CQ8.0Pd/NhG3-E, GRS-CQ10Pd/NhG3-E, GRS-CQ12Pd/NhG3-E, GRS-CQ14Pd/NhG3-E, GRS-CQ16Pd/NhG3-E GRS-CQ8.0Pd/NhG4-E, GRS-CQ10Pd/NhG4-E, GRS-CQ12Pd/NhG4-E, GRS-CQ14Pd/NhG4-E, GRS-CQ16Pd/NhG4-E GRS-CQ8.0Pd/NhG3-M, GRS-CQ10Pd/NhG3-M, GRS-CQ12Pd/NhG3-M, GRS-CQ14Pd/NhG3-M, GRS-CQ16Pd/NhG3-M GRS-CQ8.0Pd/NhG4-M, GRS-CQ10Pd/NhG4-M, GRS-CQ12Pd/NhG4-M, GRS-CQ14Pd/NhG4-M, GRS-CQ16Pd/NhG4-M Remove the top panel, front panel and right panel.
- Page 75 Air-to-water Heat Pump MONOBLOC TYPE Note: firstly please cut off the power supply and discharge refrigerant out of the unit. Operation Procedure Illustration GRS-CQ8.0Pd/NhG3-E, GRS-CQ10Pd/NhG3-E, GRS-CQ12Pd/NhG3-E, GRS-CQ14Pd/NhG3-E, GRS-CQ16Pd/NhG3-E GRS-CQ8.0Pd/NhG4-E, GRS-CQ10Pd/NhG4-E, GRS-CQ12Pd/NhG4-E, GRS-CQ14Pd/NhG4-E, GRS-CQ16Pd/NhG4-E GRS-CQ8.0Pd/NhG3-M, GRS-CQ10Pd/NhG3-M, GRS-CQ12Pd/NhG3-M, GRS-CQ14Pd/NhG3-M, GRS-CQ16Pd/NhG3-M GRS-CQ8.0Pd/NhG4-M, GRS-CQ10Pd/NhG4-M, GRS-CQ12Pd/NhG4-M, GRS-CQ14Pd/NhG4-M, GRS-CQ16Pd/NhG4-M Remove the cover of both the electic box and the inductance box.
- Page 76 Air-to-water Heat Pump MONOBLOC TYPE Note: firstly please cut off the power supply and discharge refrigerant out of the unit. Operation Procedure Illustration GRS-CQ8.0Pd/NhG3-E, GRS-CQ10Pd/NhG3-E, GRS-CQ12Pd/NhG3-E, GRS-CQ14Pd/NhG3-E, GRS-CQ16Pd/NhG3-E GRS-CQ8.0Pd/NhG4-E, GRS-CQ10Pd/NhG4-E, GRS-CQ12Pd/NhG4-E, GRS-CQ14Pd/NhG4-E, GRS-CQ16Pd/NhG4-E GRS-CQ8.0Pd/NhG3-M, GRS-CQ10Pd/NhG3-M, GRS-CQ12Pd/NhG3-M, GRS-CQ14Pd/NhG3-M, GRS-CQ16Pd/NhG3-M GRS-CQ8.0Pd/NhG4-M, GRS-CQ10Pd/NhG4-M, GRS-CQ12Pd/NhG4-M, GRS-CQ14Pd/NhG4-M, GRS-CQ16Pd/NhG4-M Remove the suction line •...
- Page 77 Seperate the condenser from the base by removing fixing bolts at them. Note: firstly please cut off the power supply and discharge refrigerant out of the unit. Operation Procedure Illustration GRS-CQ4.0Pd/NhG3-E, GRS-CQ6.0Pd/NhG3-E, GRS-CQ4.0Pd/NhG4-E, GRS-CQ6.0Pd/NhG4-E Remove the fixing bolts, top cover, front panel and right panel.
- Page 78 Note: firstly please cut off the power supply and discharge refrigerant out of the unit. Operation Procedure Illustration GRS-CQ4.0Pd/NhG3-E, GRS-CQ6.0Pd/NhG3-E, GRS-CQ4.0Pd/NhG4-E, GRS-CQ6.0Pd/NhG4-E Remove the fixing bolts, real panel, connector panel, support (upright column). Remove the fixing bolts and outer guard.
- Page 79 Note: firstly please cut off the power supply and discharge refrigerant out of the unit. Operation Procedure Illustration GRS-CQ4.0Pd/NhG3-E, GRS-CQ6.0Pd/NhG3-E, GRS-CQ4.0Pd/NhG4-E, GRS-CQ6.0Pd/NhG4-E Desolder connection points of the 4-way valve, and remove the pipelines of the 4-way valve. Note:when desoldering the connection joint, pay attention to covering the solder joints with a wet cloth to avoid high temperature damage.
- Page 80 Note: firstly please cut off the power supply and discharge refrigerant out of the unit. Operation Procedure Illustration GRS-CQ4.0Pd/NhG3-E, GRS-CQ6.0Pd/NhG3-E, GRS-CQ4.0Pd/NhG4-E, GRS-CQ6.0Pd/NhG4-E Remove fixing bolts and then then fan. Remove fixing bolts of the motor and the motor support and then move them.
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