Gree VERSATI III Series Service Manual

All-in-one type air to water heat pump

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Service Manual

VERSATI III All-in-one Type Air To Water Heat Pump

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Summary of Contents for Gree VERSATI III Series

Page 1 Change for life Service Manual VERSATI III All-in-one Type Air To Water Heat Pump...
Page 2 Contents Product Data ........................1 1 Product Data ....................... 1 1.1 Lineup ..........................1 1.2 Nomenclature ........................1 1.3 Product Features ......................2 1.4 Operating Principle ......................5 1.5 Technical Data ........................5 2 Explosive Views and Part Lists ................31 3 Supply Scope ......................53 Model Selection ......................
Page 3 1.1 Control Principle Diagram ....................62 1.2 Control Flowchart ......................65 2 Main Control Logics ....................65 2.1 Cooling ..........................65 2.2 Heating ..........................66 2.3 Water Heating .......................66 2.4 Shutdown ........................67 2.5 Control to the Compressor ....................67 2.6 Control to the Fan ......................67 2.7 Control to the 4-way Valve ....................67 2.8 Control to the Water Pump .....................67 2.9 Control the Electronic Expansion Valve ................67...
Page 4 4.13 Wiring of the Remote Air Temperature Sensor ............134 4.14 Wiring of the Thermostat .....................135 4.15 Wiring of the Control ....................136 5 Commissioning and Trial Run ................137 5.1 Check before startup .....................137 5.2 Trial run .........................138 TEST OPERATION & TROUBLESHOOTING & MAINTENANCE ......139 1 Precheck........................
Page 5 12.6 GRS-CQ16PdG/NhH2-M ER01002440 15.5 1.2 Nomenclature 1.2.1 Main Unit Description Options GREE G-GREE Air to water heat pump Heat Pump Water Heater Heating Mode S= Static; C=Circulating Function Q=Multi-function; Default=Single-function 6.0=6.0kW; 8.0=8.0kW;10=10kW; Nominal Heating Capacity Pd=DC Inverter; Omit=On/Off Compressor Type...
Page 6 Air-to-water Heat Pump Split Versati SPLIT TYPE 1.3 Product Features 1.3.1 General It’s a kind of integrated DC inverter unit that comprises cooling, heating and water heating functions, and up to 5.0 energy efficiency. It adopts R32 refrigerant and two-stage compressor. For heating, ambient temperature range is -25~35°C while the leaving water temperature range is 20~60°C.
Page 7 Air-to-water Heat Pump Split Versati SPLIT TYPE (4) The high-efficiency water pump will also improve the unit’s performance largely. ◆ All-in-one Design (1) The unit can integrate with terminal units, like the radiator, floor heating device, FCU, water heating device, solar kit, gas furnace etc.
Page 8 Air-to-water Heat Pump Split Versati SPLIT TYPE (Menu page) ◆ Smart Control, Powerful Function (1) The operating mode can be switched freely. Furthermore, based on different demands, the holiday mode, weather-dependent mode, quite timer, temperature timer and floor commissioning can activated. (2) Multiple protections can make this product much safer.
Page 9 Air-to-water Heat Pump Split Versati SPLIT TYPE 1.4 Operating Principle 1.4.1 Schematic Diagram pressure pressure switch switch (heating) (cooling) 1.5 Technical Data 1.5.1 Parameter List ◆ Whole Units GRS- GRS- GRS- GRS- Model CQ4.0PdG/ CQ6.0PdG/ CQ8.0PdG/ CQ10PdG/ NhH-E NhH-E NhH-E NhH-E Product Code ER01001770...
Page 10 Air-to-water Heat Pump Split Versati SPLIT TYPE GRS- GRS- GRS- GRS- Model CQ4.0PdG/ CQ6.0PdG/ CQ8.0PdG/ CQ10PdG/ NhH-E NhH-E NhH-E NhH-E Product Code ER01001770 ER01001780 ER01001760 ER01001730 Refrigerant charge volume Sanitary water Temperature °C 40~80°C GRS- GRS- GRS- GRS- Model CQ4.0PdG/ CQ6.0PdG/ CQ8.0PdG/ CQ10PdG/...
Page 11 Air-to-water Heat Pump Split Versati SPLIT TYPE GRS- GRS- GRS- Model CQ12PdG/ CQ14PdG/ CQ16PdG/ NhH2-E NhH2-E NhH2-E Product Code ER01002410 ER01002400 ER01002380 EER*2(for Fan coil) 2.79 2.65 2.57 COP*2(Fan coil or Radiator) 3.77 3.68 3.62 Refrigerant charge volume 1.84 1.84 1.84 Sanitary water Temperature °C...
Page 12 Air-to-water Heat Pump Split Versati SPLIT TYPE GRS-CQ4.0Pd/ GRS-CQ6.0Pd/ GRS-CQ8.0Pd/ GRS-CQ10Pd/ Model NhH2-E(O) NhH2-E(O) NhH2-E(O) NhH2-E(O) Product Code ER010W2350 ER010W2370 ER010W2340 ER010W2360 Sound Cooling dB(A) Pressure Heating dB(A) Level Outline 975×396×702 975×396×702 982×427×787 982×427×787 Dimensions (W×D×H) Packaged 458×1029×830 458×1029×830 478×1097×937 478×1097×937 Net weight/Gross weight 55/65...
Page 13 Air-to-water Heat Pump Split Versati SPLIT TYPE GRS-CQ4.0PdG/ GRS-CQ6.0PdG/ GRS-CQ8.0PdG/ GRS-CQ10PdG/ Model NhH2-E(I) NhH2-E(I) NhH2-E(I) NhH2-E(I) Product Code ER010N2370 ER010N2350 ER010N2360 ER010N2340 Outline 600×650×1800 600×650×1800 600×650×1800 600×650×1800 Dimensions Packaged (W×D×H) 703×803×2035 703×803×2035 703×803×2035 703×803×2035 Net weight/Gross weight 195/219 195/219 195/219 195/219 GRS-CQ12PdG/ GRS-CQ14PdG/...
Page 14 7~25 10~48 Heating 20~60 -25~35 40~80 (Water Tank Temperature) Water Heating -25~45 Note: when operating conditions are out of the range listed above, please contact GREE. 1.5.4 Temperature sensor parameter Nominal working datas Inspection Displayed Name Remark range(°C) Cooling Heating...
Page 15 Air-to-water Heat Pump Split Versati SPLIT TYPE Minimum Minimum Power Supply Leakage Sectional Sectional Leakage Switch Area of Power Model Area of Earth Wire Supply Wire V,Ph,Hz GRS-CQ8.0Pd/NhH-E(O) GRS-CQ10Pd/NhH-E(O) GRS-CQ8.0PdG/NhH-E(I) GRS-CQ10PdG/NhH-E(I) 230VAC,1Ph,50Hz GRS-CQ8.0Pd/NhH2-E(O) GRS-CQ10Pd/NhH2-E(O) GRS-CQ8.0PdG/NhH2-E(I) GRS-CQ10PdG/NhH2-E(I) 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)
Page 16 Air-to-water Heat Pump Split Versati SPLIT TYPE 1.5.6 Capacity Correction ◆ Cooling Capacity Correction Computer of actual cooling capacity: actual cooling capacity = nominal cooling capacity x cooling capacity correction coefficient. (1) GRS-CQ4.0PdG/NhH-E,GRS-CQ6.0PdG/NhH-E, GRS-CQ8.0PdG/NhH-E, GRS-CQ10.0PdG/NhH-E Cooling Capacity Correction_4 Outflow Ambient Temp.(°C) Water(°C) 2.58 2.87...
Page 17 Air-to-water Heat Pump Split Versati SPLIT TYPE Cooling Capacity Correction_8 Outflow Ambient Temp.(°C) Water(°C) 5.78 6.36 6.73 7.16 7.26 7.00 6.36 4.98 4.24 5.99 6.63 7.00 7.42 7.58 7.31 6.63 5.14 4.40 6.41 7.10 7.47 7.90 8.06 7.79 7.10 5.51 4.66 6.63 7.37...
Page 18 Air-to-water Heat Pump Split Versati SPLIT TYPE Cooling Capacity Correction_6 Outflow Ambient Temp.(°C) Water(°C) 3.76 4.20 4.40 4.68 4.80 4.60 4.20 3.24 2.76 3.88 4.32 4.56 4.84 4.96 4.76 4.32 3.36 2.84 4.04 4.48 4.68 5.00 5.08 4.88 4.48 3.48 2.92 4.16 4.56...
Page 19 Air-to-water Heat Pump Split Versati SPLIT TYPE Cooling Capacity Correction_12 Outflow Ambient Temp.(°C) Water(°C) 8.68 9.64 10.17 10.80 11.01 10.59 9.64 7.52 6.35 8.90 9.95 10.48 11.12 11.33 10.91 9.95 7.73 6.57 9.21 10.17 10.70 11.44 11.65 11.23 10.17 8.05 6.67 9.43 10.38...
Page 20 Air-to-water Heat Pump Split Versati SPLIT TYPE (3) GRS-CQ8.0PdG/NhH2-M, GRS-CQ10PdG/NhH2-M, GRS-CQ12PdG/NhH2-M, GRS-CQ14PdG/NhH2-M, GRS-CQ16PdG/NhH2-M Cooling Capacity Correction_8 Outflow Ambient Temp.(°C) Water(°C) 6.23 6.92 7.30 7.75 7.90 7.60 6.92 5.40 4.56 6.46 7.14 7.52 7.98 8.13 7.83 7.14 5.55 4.71 6.54 7.30 7.68 8.21 8.36...
Page 21 Air-to-water Heat Pump Split Versati SPLIT TYPE Cooling Capacity Correction_14 Outflow Ambient Temp.(°C) Water(°C) 8.02 8.90 9.39 9.97 10.17 11.24 8.90 6.94 5.87 8.21 9.19 9.68 10.27 10.46 11.38 9.19 7.14 6.06 8.51 9.39 9.88 10.56 10.76 11.52 9.39 7.43 6.16 8.70 9.58...
Page 22 Air-to-water Heat Pump Split Versati SPLIT TYPE EER Correction_4 Outflow Ambient Temp.(°C) Water(°C) 6.97 6.73 6.49 6.22 5.71 5.13 4.28 3.13 2.52 7.28 7.00 6.80 6.46 5.95 5.34 4.42 3.26 2.62 EER Correction_6 Outflow Ambient Temp.(°C) Water(°C) 4.35 4.19 4.06 3.87 3.55 3.20...
Page 23 Air-to-water Heat Pump Split Versati SPLIT TYPE EER Correction_10 Outflow Ambient Temp.(°C) Water(°C) 4.90 4.70 4.55 4.35 3.97 3.60 2.99 2.18 1.77 5.25 5.08 4.90 4.67 4.29 3.86 3.19 2.35 1.89 5.51 5.28 5.16 4.90 4.50 4.03 3.36 2.47 2.00 5.83 5.60 5.45...
Page 24 Air-to-water Heat Pump Split Versati SPLIT TYPE EER Correction_8 Outflow Ambient Temp.(°C) Water(°C) 4.22 4.08 3.96 3.76 3.44 3.10 2.58 1.87 1.52 4.33 4.19 4.08 3.87 3.56 3.19 2.67 1.95 1.58 4.45 4.28 4.16 3.93 3.64 3.27 2.73 2.01 1.61 4.56 4.42 4.28...
Page 25 Air-to-water Heat Pump Split Versati SPLIT TYPE EER Correction_14 Outflow Ambient Temp.(°C) Water(°C) 3.79 3.65 3.54 3.37 3.09 2.65 2.31 1.70 1.37 3.90 3.76 3.65 3.48 3.18 2.75 2.37 1.73 1.42 4.04 3.90 3.76 3.60 3.29 2.85 2.45 1.81 1.48 4.12 3.99 3.85...
Page 26 Air-to-water Heat Pump Split Versati SPLIT TYPE EER Correction_10 Outflow Ambient Temp.(°C) Water(°C) 5.85 5.63 5.46 5.20 4.77 4.30 3.57 2.62 2.11 6.02 5.81 5.63 5.38 4.90 4.43 3.66 2.67 2.19 6.24 6.02 5.81 5.55 5.07 4.56 3.78 2.80 2.28 6.36 6.15 5.93...
Page 27 Air-to-water Heat Pump Split Versati SPLIT TYPE EER Correction_16 Outflow Ambient Temp.(°C) Water(°C) 3.76 3.62 3.51 3.35 3.07 2.63 2.30 1.69 1.36 3.87 3.73 3.62 3.46 3.15 2.73 2.35 1.71 1.41 4.01 3.87 3.73 3.57 3.26 2.82 2.43 1.80 1.47 4.09 3.96 3.82...
Page 28 Air-to-water Heat Pump Split Versati SPLIT TYPE Heating Capacity Correction_8 Outflow Ambient Temp.(°C) heated Water(°C) 3.28 3.84 4.48 5.20 5.60 6.24 6.80 8.00 8.24 8.72 8.64 7.84 6.88 5.36 3.28 3.84 4.48 5.20 5.60 6.24 6.80 8.00 8.24 8.72 8.64 7.84 6.88 5.36...
Page 29 Air-to-water Heat Pump Split Versati SPLIT TYPE Heating Capacity Correction_8 Outflow Ambient Temp.(°C) heated Water(°C) 3.44 4.16 4.96 5.68 6.08 6.80 7.52 7.36 7.60 8.00 7.92 7.20 6.32 4.96 3.36 4.08 4.80 5.52 5.92 6.56 7.28 7.76 8.00 8.48 8.40 7.60 6.64 5.20...
Page 30 Air-to-water Heat Pump Split Versati SPLIT TYPE Heating Capacity Correction_16 Outflow Ambient Temp.(°C) heated Water(°C) 6.64 8.03 9.58 10.97 11.74 13.13 14.52 14.91 14.67 15.45 15.29 13.90 12.20 9.58 6.49 7.88 9.27 10.66 11.43 12.67 14.06 15.21 15.45 16.37 16.22 14.67 12.82 10.04 6.33 7.41...
Page 31 Air-to-water Heat Pump Split Versati SPLIT TYPE Heating Capacity Correction_14 Outflow Ambient Temp.(°C) heated Water(°C) 6.02 7.28 8.68 9.94 10.65 11.91 13.17 13.48 13.31 14.01 13.87 12.61 11.07 8.68 5.88 7.14 8.40 9.66 10.37 11.49 12.75 13.72 14.01 14.85 14.71 13.31 11.63 9.10 5.74 6.72...
Page 32 Air-to-water Heat Pump Split Versati SPLIT TYPE COP Correction_8 Outflow Ambient Temp.(°C) heated Water(°C) 1.81 2.29 2.70 3.44 4.00 4.70 5.40 5.66 5.88 6.44 6.81 6.77 7.36 7.81 1.48 1.92 2.26 2.92 3.40 4.00 4.66 5.18 5.48 5.88 6.25 6.25 6.77 7.22 1.22...
Page 33 Air-to-water Heat Pump Split Versati SPLIT TYPE COP Correction_8 Outflow Ambient Temp.(°C) heated Water(°C) 1.89 2.39 2.82 3.59 4.17 4.90 5.64 5.91 6.14 6.72 7.10 7.06 7.68 8.14 1.54 2.01 2.35 3.05 3.55 4.17 4.86 5.40 5.71 6.14 6.52 6.52 7.06 7.53 1.27...
Page 34 Air-to-water Heat Pump Split Versati SPLIT TYPE COP Correction_16 Outflow Ambient Temp.(°C) heated Water(°C) 1.74 2.21 2.60 3.31 3.85 4.52 5.20 5.38 5.66 6.20 6.55 6.52 7.09 7.51 1.42 1.85 2.17 2.81 3.28 3.85 4.49 4.94 5.27 5.66 6.02 6.02 6.52 6.94 1.18...
Page 35 Air-to-water Heat Pump Split Versati SPLIT TYPE COP Correction_14 Outflow Ambient Temp.(°C) heated Water(°C) 1.98 2.51 2.95 3.76 4.36 5.13 5.90 6.19 6.43 7.03 7.44 7.40 8.04 8.53 1.62 2.10 2.47 3.19 3.72 4.36 5.09 5.63 5.98 6.43 6.83 6.83 7.40 7.88 1.33...
Page 36 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Sealing Cap(Pressure Warning) Electric heater Electric starter of water valve Expansion Drum Steam current Switch 3-way valve Water Pump Relief Valve Water Pressure Gauge Main Board Bipolar AC Contactor Strainer Water Tank Electric heater...
Page 37 Air-to-water Heat Pump Split Versati SPLIT TYPE Parts List of GRS-CQ4.0Pd/NhH-E(O), GRS-CQ6.0Pd/NhH-E(O) Name of part Quantity Handle Left Side Plate Electric Box Assy Radiator Jumper Main Board Terminal Board Top Cover Sub-Assy Communication Interface Board Electric Box Cover Supporting Board(Condenser) Condenser Assy Rear Grill Pressure Sensor...
Page 38 Air-to-water Heat Pump Split Versati SPLIT TYPE (3) GRS-CQ8.0PdG/NhH-E(I), GRS-CQ10PdG/NhH-E(I) Parts List of GRS-CQ8.0PdG/NhH-E(I), GRS-CQ10PdG/NhH-E(I) Name of part Quantity Electric Box Assy Terminal Board Terminal Board Plate-type Heat Exchanger Sub-Assy Drainage Pipe Sub-assy Auto Air Outlet Valve Sealing Cap(Pressure Warning) Electric heater Electric starter of water valve Expansion Drum...
Page 39 Air-to-water Heat Pump Split Versati SPLIT TYPE (4) GRS-CQ8.0Pd/NhH-E(O), GRS-CQ10Pd/NhH-E(O) Parts List of GRS-CQ8.0Pd/NhH-E(O), GRS-CQ10Pd/NhH-E(O) Name of part Quantity Rear Side Plate Rear Grill Condenser Assy Silencer Strainer 4-Way Valve Assy Magnet Coil 4-way Valve Pressure Sensor Pressure Protect Switch Electric Expand Valve Fitting Electric Expand Valve Fitting Electronic Expansion Valve...
Page 40 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Compressor and Fittings Drainage hole Cap Drainage Joint Electrical Heater Chassis Pressure Protect Switch Pressure Protect Switch Gas-liquid Separator Motor Support Sub-Assy Front Side Plate Handle Diversion Circle Cabinet BrushlessDCMotor Axial Flow Fan Front Grill...
Page 41 Air-to-water Heat Pump Split Versati SPLIT TYPE (5) GRS-CQ4.0PdG/NhH2-E(I), GRS-CQ6.0PdG/NhH2-E(I), GRS-CQ8.0PdG/NhH2-E(I), GRS-CQ10PdG/ NhH2-E(I) Parts List of GRS-CQ4.0PdG/NhH2-E(I), GRS-CQ6.0PdG/NhH2-E(I), GRS-CQ8.0PdG/NhH2-E(I), GRS- CQ10PdG/NhH2-E(I) Name of part Quantity Relief Valve Strainer Remote room temperature sensor Temperature Sensor Magnet Sub-assy Signal Wire Display Board Jumper Bipolar AC Contactor Electronic Positive Electrode...
Page 42 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Terminal Board Electric Box Assy Handle Plate-type Heat Exchanger Sub-Assy Steam current Switch Electric Heater Main Board mounting card(main board) Expansion Drum Relief Valve Water Pump Water Pressure Gauge Water Pump Drainage Pipe Sub-assy Electric starter of water valve...
Page 43 Air-to-water Heat Pump Split Versati SPLIT TYPE Part of name Quantity Communication Interface Board Electric Box Cover Supporting Board(Condenser) Condenser Assy Rear Grill Pressure Sensor Compressor and Fittings Electrical Heater Plate-type Heat Exchanger Electric Expand Valve Fitting Electronic Expansion Valve Electric Expand Valve Fitting Electronic Expansion Valve 4-Way Valve...
Page 44 Air-to-water Heat Pump Split Versati SPLIT TYPE (7) GRS-CQ8.0Pd/NhH2-E(O)， GRS-CQ10Pd/NhH2-E(O) Parts List of GRS-CQ8.0Pd/NhH2-E(O)，GRS-CQ10Pd/NhH2-E(O) Name of part Quantity Rear Side Plate Rear Grill Condenser Assy Silencer Strainer 4-Way Valve Assy Magnet Coil 4-way Valve Pressure Sensor Pressure Protect Switch Electric Expand Valve Fitting Electric Expand Valve Fitting Electronic Expansion Valve Strainer...
Page 45 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Drainage hole Cap Drainage Joint Electrical Heater Chassis Pressure Protect Switch Pressure Protect Switch Gas-liquid Separator Motor Support Sub-Assy Front Side Plate Handle Diversion Circle Cabinet BrushlessDCMotor Axial Flow Fan Front Grill Left Side Plate Communication Board...
Page 46 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Coping (8) GRS-CQ12PdG/NhH2-E(I)，GRS-CQ14PdG/NhH2-E(I)，GRS-CQ16PdG/NhH2-E(I) Name of part Quantity Relief Valve Strainer Remote room temperature sensor Temperature Sensor Magnet Sub-assy Signal Wire Display Board Jumper...
Page 47 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Bipolar AC Contactor Electronic Positive Electrode Thermostat Terminal Board Thermostat Terminal Board Electric Box Assy Handle Plate-type Heat Exchanger Sub-Assy Steam current Switch Electric Heater Drainage Pipe Sub-assy Main Board mounting card(main board) Expansion Drum Relief Valve...
Page 48 Air-to-water Heat Pump Split Versati SPLIT TYPE Parts List of GRS-CQ12Pd/NhH-E(O)，GRS-CQ14Pd/NhH-E(O)，GRS-CQ16Pd/NhH-E(O) Name of part Quantity Left Side Plate Inductance Box Assy Inductance Radiator Drive Board Terminal board Filter Board Coping Electric Box Assy Electric Box Main Board Communication Interface Board Electrical Retaining Plate Jumper Brushless DC Motor...
Page 49 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Condenser Assy Current Divider Silencer Strainer Pressure Sensor Nozzle for Adding Freon Electric Expand Valve Fitting Electric Expand Valve Fitting Electronic Expansion Valve Electronic Expansion Valve Plate-type Heat Exchanger Electrical Heater Strainer Energy saver sub-assy...
Page 50 Air-to-water Heat Pump Split Versati SPLIT TYPE (10) GRS-CQ8.0PdG/NhH2-M(I)，GRS-CQ10PdG/NhH2-M(I) Parts List of RS-CQ8.0PdG/NhH2-M(I), GRS-CQ10PdG/NhH2-M(I) Name of part Quantity Relief Valve Strainer Remote room temperature sensor Temperature Sensor Magnet Sub-assy Signal Wire Electric Box Assy Jumper Display Board AC Contactor mounting card(main board) Electronic Positive Electrode Main Board...
Page 51 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Thermostat Terminal Board Terminal Board Terminal Board Drainage Pipe Sub-assy Steam current Switch Plate-type Heat Exchanger Sub-Assy Sealing Cap(Pressure Warning) Electric Heater Auto Air Outlet Valve Relief Valve Water Pressure Gauge Water Pump Water Pump Expansion Drum...
Page 52 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Coping Mouting plate Inductance Main Board Supporting Strip(Condenser) Condenser Assy Gas-liquid Separator Current Divider Strainer Rear Grill Rear Side Plate Handle Right Side Plate Sub-Assy Gland Bush Electric Expand Valve Fitting Electronic Expansion Valve Plate-type Heat Exchanger Electronic Expansion Valve...
Page 53 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Filter Board Electric Box Assy （12）GRS-CQ12PdG/NhH2-M(I)，GRS-CQ14PdG/NhH2-M(I)，GRS-CQ16PdG/NhH2-M(I) Parts List of GRS-CQ12PdG/NhH2-M(I)，GRS-CQ14PdG/NhH2-M(I)，GRS-CQ16PdG/NhH2-M(I) Name of part Quantity Relief Valve Strainer Remote room temperature sensor...
Page 54 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Temperature Sensor Magnet Sub-assy Signal Wire Electric Box Assy Jumper Display Board AC Contactor mounting card(main board) Electronic Positive Electrode Main Board Thermostat Terminal Board Terminal Board Terminal Board Drainage Pipe Sub-assy Steam current Switch Plate-type Heat Exchanger Sub-Assy...
Page 55 Air-to-water Heat Pump Split Versati SPLIT TYPE （13）GRS-CQ12Pd/NhH-M(O)，GRS-CQ14Pd/NhH-M(O)，GRS-CQ16Pd/NhH-M(O) Parts List of GRS-CQ12Pd/NhH-M(O)，GRS-CQ14Pd/NhH-M(O)。GRS-CQ16Pd/NhH-M(O) Name of part Quantity Left Side Plate Inductance Box Assy Reactor Radiator Main Board Inductance Communication Interface Board Terminal board Filter Board Coping Electric Box Assy Electric Box Main Board Electrical Retaining Plate Terminal board...
Page 56 Air-to-water Heat Pump Split Versati SPLIT TYPE Name of part Quantity Jumper Brushless DC Motor Axial Flow Fan Rear Grill Condenser Assy Current Divider Silencer Strainer Pressure Sensor Nozzle for Adding Freon Electric Expand Valve Fitting Electric Expand Valve Fitting Electronic Expansion Valve Electronic Expansion Valve Plate-type Heat Exchanger...
Page 57 Air-to-water Heat Pump Split Versati SPLIT TYPE 3 Supply Scope Name Standard Optional Field Supplied √ Owner's Manual for the Main Unit √ Owner’s Manual for the Control √ 2-way Valve √ 3-way Valve √ Remote Temperature Sensor √ Wired Controller √...
Page 58 Air-to-water Heat Pump Split Versati SPLIT TYPE Model Selection 1 General 1.1 Power Supply Power supply Model V,Ph,Hz GRS-CQ4.0PdG/NhH-E GRS-CQ6.0PdG/NhH-E GRS-CQ8.0PdG/NhH-E GRS-CQ10PdG/NhH-E GRS-CQ4.0PdG/NhH2-E GRS-CQ6.0PdG/NhH2-E 230VAC,1Ph,50Hz GRS-CQ8.0PdG/NhH2-E GRS-CQ10PdG/NhH2-E GRS-CQ12PdG/NhH2-E GRS-CQ14PdG/NhH2-E GRS-CQ16PdG/NhH2-E GRS-CQ8.0PdG/NhH2-M GRS-CQ10PdG/NhH2-M GRS-CQ12PdG/NhH2-M 400V,3N,50 Hz GRS-CQ14PdG/NhH2-M GRS-CQ16PdG/NhH2-M 1.2 Operation Conditions Capacities and power inputs are based on the following conditions (floor heating /cooling ) a.
Page 59 Air-to-water Heat Pump Split Versati SPLIT TYPE 1.4 Design Principle (1) Cooling: capacity of the unit ≥ cooling load of the air conditioning (2) Heating: capacity of the unit ≥ max{ heating load, floor heating load, water heating load} (3) Water Tank: it should be selected based on the sanitary outfit or quantity of users. Each unit can accommodate only one water tank.
Page 60 Air-to-water Heat Pump Split Versati SPLIT TYPE Square-shaped Coil (Recommended) U-shaped Coil Length of coils is calculated as below: Square-shaped coil: =L*W/tube spacing=area/tube spacing U-shaped coil: =L-1+L*W/tube spacing=L-1+area/tube spacing The reason why the square-shaped coils are recommended is because they can keep even temperature distribution.
Page 61 Air-to-water Heat Pump Split Versati SPLIT TYPE Calculation of loop quantity for circulation water can be done as per the formula below: N=A/A1 N——loop quantity A—— total floor heating area (unit: m A1—— floor heating area per single loop (unit: m Example for how to calculating the floor heating area per single loop: when the tube length is 120m, and tube spacing is 200mm, then the floor heating area per single loop is 120×0.2=24m (4) One manifold cannot be used for different floors, or it would cause uneven water distribution.
Page 62 Air-to-water Heat Pump Split Versati SPLIT TYPE (5) Distance between the unit and the water manifold should be within 15m. If the distance exceeds 20m, then it is required to calculate the hydraulic power. Less than 15m is better 3.2 Requirements on Installation of the Water Manifold (1) The water manifold should be installed on the wall or inside the special box.
Page 63 Air-to-water Heat Pump Split Versati SPLIT TYPE Cooling Heating Static Air Volume Type Capacity Capacity Pressure Appearance (kW) (kW) (Pa) Wall mounted —— 166~1020 2.1~5.4 3.15~8.5 type Concealed 213~2380 1.85~12.8 3.1~21 12, 30 ceiling type Floor ceiling —— 213~2040 1.9~10.8 2.8~16.2 type ——...
Page 64 Air-to-water Heat Pump Split Versati SPLIT TYPE t(design temperatuere)-t(entering cold water temperatuere) •consumption Volume of the Water Tank= t(water tank temperatuere set point)-t(entering cold water temperature) t (design temperature): generally it is 60°C ; t (entering cold water temperature): it differs for different regions; t ( water tank temperature set point): it is the target heating temperature of the water tank.
Page 65 Air-to-water Heat Pump Split Versati SPLIT TYPE If the outer diameter of the heating pipe is 20mm and thickness is 2mm, then the minimum flow for the heating pipe is: It can be see that the arranged piping system for the bathroom does not meet the technical requirement and need to combine the loops with the master room.
Page 66 Air-to-water Heat Pump Split Versati SPLIT TYPE Control 1 Integral Control Concept 1.1 Control Principle Diagram ◆ Control Diagram Output Control Field Supply VERSATI III RS485 Power Main Board Supply VERSATI III Field Supply Input Control (1) The outdoor temperature is detected by the sensor installed at fins of the finned heat exchanger, which is mainly used to control the initialization steps of the fan and the electrostatic expansion valve and also limit the maximum running frequency of the compressor.
Page 67 Air-to-water Heat Pump Split Versati SPLIT TYPE (5) The temperature sensor at the economizer is used to detect the temperature of the economizer after throttling via the electrostatic expansion 2. Under the Heating or Hot Water mode, this sensor and that at the economizer outlet both are used to control the opening angle of the electrostatic expansion valve 2.
Page 68 Air-to-water Heat Pump Split Versati SPLIT TYPE also will be displayed at the controller but the unit continues normal operation. (16) The leaving and entering water temperature of the solar panel and also the solar panel temperature are detected by sensors installed at the inlet pipe, outlet pipe and solar panel of the solar system respectively. Theses sensors are mainly used to control the water pump of the hot water of the solar system.
Page 69 Air-to-water Heat Pump Split Versati SPLIT TYPE 1.2 Control Flowchart Power Switch On Operation Mode Judgment Cooling Heating Water Heating 3-Way Vavle and 3-Way Vavle and 3-Way Vavle and 2-Way Vavle 2-Way Vavle 2-Way Vavle Control Control Control Water Pump Error Water Pump Error...
Page 70 Air-to-water Heat Pump Split Versati SPLIT TYPE temperature, the main unit will stop as per the shutdown frequency but the water pump keeps normal operation. When it is detected that the leaving water temperature of the plate heat exchanger is equal to or larger than the freeze protection withdrawing temperature, freeze protection will stop.
Page 71 Air-to-water Heat Pump Split Versati SPLIT TYPE 2.3.2 Water Heating by the Solar System When the solar water heating system is equipped but temperature difference value (it is the difference of solar panel temperature and the actual water tank temperature value) for startup is not reached, the water pump of the solar system will not start.
Page 72 Air-to-water Heat Pump Split Versati SPLIT TYPE 2.10 Protection Control (1) Compressor Low-pressure Protection When it is detected continuously that pressure at the low side is too low, then low-pressure protection will occur and this error will be displayed at the controller, all loads act as per the shutdown sequence. This error is unrecoverable and can be cleared unless repowered on.
Page 73 Air-to-water Heat Pump Split Versati SPLIT TYPE Icon Description Icon Description Water heating Error Menu Card out/Failed disinfection Switchover between cooling ON/OFF and heating [Notes] ●The ON/OFF icon will turn to green when the control is turned on. ●When the control mode is “Room temperature”, the temperature displayed at the upper right corner indicates the remote room temperature;...
Page 74 Air-to-water Heat Pump Split Versati SPLIT TYPE Icon Description Icon Description Heating Floor commissioning Cooling Floor commissioning error Hot water Card out Heating + Hot water Defrosting Hot water + Heating Holiday Cooling + Hot water WiFi Back Hot water + Cooling Quiet Menu page Sanitation...
Page 75 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.2 Operation Instructions 3.2.1 ON/OFF [Operation Instructions] At the menu page, by touching ON/OFF, the unit will be turned on/off. [Notes] ●It is defaulted to be OFF upon first power-on. ●ON/OFF operation will be memorized by setting “On/Off Memory” to be “On” at the “GENERAL.” setting page. That is, in case of power failure the unit will resume running upon power recovery.
Page 76 Air-to-water Heat Pump Split Versati SPLIT TYPE Function Setting Item Range Default Remarks Cool 1. When the water tank is unavailable, then only Heat “Cool” and “Heat” are available. 2. For the heating only unit, only "Heat" mode, “Hot Mode Hot water Heat water”, and “Heat + hot water”...
Page 77 Air-to-water Heat Pump Split Versati SPLIT TYPE [Notes] ●The default mode is “Heat” upon first power-on. ●Mode setting is allowed only when the unit is turned off, otherwise a dialog box will pop up, saying “Please turn off the system first!” ●When the water tank is unavailable, only “Heat”...
Page 78 Air-to-water Heat Pump Split Versati SPLIT TYPE ●It will be memorized upon power failure. ●This function is unavailable to the heating only unit and the mini chiller. 3.2.2.5 Quiet Mode [Operation Instructions] At the function setting page with the unit turned off, by touching “Quiet mode”, there will be a choice box, where “Quiet mode”...
Page 79 Air-to-water Heat Pump Split Versati SPLIT TYPE ●Temperature setting relative to the cooling mode is unallowed to the heating only unit. ●It will be memorized upon power failure. ●When the set point of “Upper WT-Heat”/ “Upper WT-Cool” is lower than that of the “Lower WT-Heat”/ “Lower WT-Cool”, or “Lower WT-Heat”/ “Lower WT-Cool”...
Page 80 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.2.2.9 Disinfection [Operation Instructions] 1.At the function setting page, access to “Disinfection” setting page. 2.At the “Disinfection” setting page, it can select the disinfection clock, disinfection temperature and disinfection week and the corresponding setting page will pop up at the right side. 3.Then, this setting will be saved by touching the “Save”...
Page 81 Air-to-water Heat Pump Split Versati SPLIT TYPE [Notes] ●When “Clock timer” has been set and “Hot water” mode is involved, in this case, if “Water tank” is changed to “Without”, “Hot water” will be automatically switched to “Heat”, and “Cool/Heat + Hot water” will be switched to “Cool/Heat”.
Page 82 Air-to-water Heat Pump Split Versati SPLIT TYPE Select “Period 1”/“Period 2” and a window will pop up, where time period can be set. Then select “WT-Heat1/ WT-Cool 1/2” and also a window will pop up where temperature can be set. [Notes] ●When “Weekly timer”, “Preset mode”,“Clock timer”...
Page 83 Air-to-water Heat Pump Split Versati SPLIT TYPE ●“Floor debug”, “Disinfection”, and “Holiday mode” cannot be activated at the same with this function. When doing so, a window will pop up, saying “Please disable the emergen. mode!”. ●Upon power failure, “Emergen. mode” will back to “Off”. 3.2.2.13 Holiday Mode [Operation Instructions] At the function setting page, select “Holiday mode”...
Page 84 Air-to-water Heat Pump Split Versati SPLIT TYPE [Notes] ●When “Preset mode” has been set to “Hot water” and “Water tank” is to set to “Without”, the preset “Hot water” mode will be automatically switched to “Heat”. ●When “Weekly timer” and “Preset mode” both have been set, priority will be given to the latter. ●When the water tank is available, the preset mode can be “Heat”, “Cool”, or “Hot water”;...
Page 85 Air-to-water Heat Pump Split Versati SPLIT TYPE Parameter Setting Page 2.At the menu setting page, by touching the page turning keys, it is able to switch to the page where the desired parameter is. 3.After that, this setting will be saved by touching “OK” and then the unit will run based on this setting. While this setting will give up by touching “Cancel”.
Page 86 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.2.4 Commissioning Parameter Setting [Operation Instructions] 1.At the menu page, by touching “Commission”, it will access to the commissioning parameter page, where the left side is for the function setting and the right side is for the parameter setting, as shown in the figure below. [Notes] ●At the commissioning parameter setting page, when the state of any function changes, the system will automatically save this change and this change will remain upon power failure.
Page 87 Air-to-water Heat Pump Split Versati SPLIT TYPE Item Range Default Description Manual On/Off defrost Off/Force-cool/Force-heat Force mode “ Force-cool ” is unavailable to heating only units. 1. This setting is allowed when the water tank is Tank heater Logic 1/Logic 2 Logic 1 available and the unit is OFF.
Page 88 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.2.4.2 2-Way valve [Operation Instructions] At the commissioning parameter setting page, by touching “Cool 2-Way valve” or “Heat 2-Way valve”, the control panel will access to the corresponding setting page. [Notes] ●This setting is unavailable to heating only units. ●Under “Cool”, or “Cool + Hot water”...
Page 89 Air-to-water Heat Pump Split Versati SPLIT TYPE [Notes] ●When “Water tank” is set to “Without”, the “Air + hot water” mode is unavailable. ●When “Floor debug” and “Emergen.mode” have activated, function of the thermostat will be invalid. Temp.timer will be deactivated automatically ●When “Thermostat”...
Page 90 Air-to-water Heat Pump Split Versati SPLIT TYPE mode; The set point should be the smaller one between “T-Water tank” +5°C and 60°C in “Hot water” mode. 2.The water pump for other thermal must be always active under the “Heat” mode. 3.Under the “Heat”...
Page 91 Air-to-water Heat Pump Split Versati SPLIT TYPE Other Thermal Control Product Mode Remark Required accessories Heat Available RT5 temperature sensor Extra 3-way valve, water tank sensor Hot water Available Monobloc Heat+Hot Extra 3-way vlave,RT5 temperature sensor, Available Water tank sensor water Heat Available...
Page 92 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.2.4.8 Remote Sensor [Operation Instructions] At the commissioning parameter setting page, by touching “Remote sensor”, the control panel will access to the corresponding setting page, where it can be set to “With” or “Without”. [Notes] ●This setting will be memorized upon power failure.
Page 93 Air-to-water Heat Pump Split Versati SPLIT TYPE Full Name Displayed Name Range Default Accuracy Temperature difference of 2~10°C/ 5°C/ ΔT of segment 1°C each segment 36~50°F 41°F 3.When this setting is finished, by pressing “Start” this setting will be saved and start working, and by pressing “Stop”...
Page 94 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.2.4.13 Gate-Ctrl. [Operation Instructions] At the commissioning parameter setting page, by touching “Gate-Ctrl.”, the control panel will access to the corresponding setting page. [Notes] ●When “Gate-Ctrl.” has been activated; the display panel will detect the card state. When the card has inserted, the unit will run normally.
Page 95 Air-to-water Heat Pump Split Versati SPLIT TYPE [Notes] ●This function is allowed only when the unit has just repowered and not turned on. For the unit which once has been put into operation, this function is unavailable, alerting “Wrong operation”. ●This function will not be memorized upon power failure.
Page 96 Air-to-water Heat Pump Split Versati SPLIT TYPE pressing “Cancel”, this setting will not be saved and quit. Display Full Name Range Default Remark Name T-HP max T-HP max 40~55℃ 104~131°F 50℃ /122°F It is unavailable to mini chillers. 3min When “Cool run time” has [2-way valve Off] expired and temperature Cool run...
Page 97 Air-to-water Heat Pump Split Versati SPLIT TYPE State Parameters Full Name Displayed Name Status Remarks On/Off Status of the compressor Compressor On/Off Status of the fan “Cool” is unavailable to Cool/Heat/Hot water/Off Status of the unit Unit status the heating only unit. On/Off Status of the water pump HP-pump...
Page 98 Air-to-water Heat Pump Split Versati SPLIT TYPE State Parameters Full Name Displayed Name Remarks Environmental temperature T-outdoor Suction temperature T-suction Discharge temperature T-discharge Defrosting temperature T-defrost Entering water temperature of the plate type heat exchanger T-water in PE Leaving water temperature of the plate type heat exchanger T-water out PE Leaving water temperature of the auxiliary heater T-optional water Sen.
Page 99 Air-to-water Heat Pump Split Versati SPLIT TYPE Full Name Displayed Name Capacity DIP switch error Capacity DIP Communication error between the outdoor and indoor main boards ODU-IDU Com. Communication error between the outdoor main board and the drive board Drive-main com. Communication error between the display panel and indoor main board IDU Com.
Page 100 Air-to-water Heat Pump Split Versati SPLIT TYPE [Notes]: ●The error log can accommodate up to 20 pieces of error. Name and occurrence time are available for each error. ●When error log exceeds 20, the latest will supersede the earliest. 3.2.5.5 Version Viewing [Operation Instructions] At the “VIEW”...
Page 101 Air-to-water Heat Pump Split Versati SPLIT TYPE Item Range Default Remarks Beeper Enter “Lighted”: the control panel will always light on. “Energy save”: When there is no touching Back light Lighted/Energy save Energy save operation in 5 minutes, the control panel will be lighted off automatically, but will be lighted on again once there is any touching operation.
Page 102 Software operation interface may vary along with APP upgrading or different operation system. Please refer to the actual program. 3.3.1 Install GREE+ APP [Operation Instructions] 1.Scan the following QR code with your smart phone to download and install GREE+ APP directly.
Page 103 Air-to-water Heat Pump Split Versati SPLIT TYPE 2.Open GREE+ APP and click “Sign up” for registration. 3.Except sign at the prompt interface, you can also enter the homepage and click the profile picture at the left upper corner to sign in.
Page 104 Air-to-water Heat Pump Split Versati SPLIT TYPE 4.Click "+" at the right upper corner of homepage to add device. After selecting “VERSATI”, the APP interface will provide relevant operation instructions.
Page 105 Air-to-water Heat Pump Split Versati SPLIT TYPE Reset the air conditioner (refer to the operation instructions in APP interface) and click “Next” to add home appliance automatically (Wi-Fi password shall be input). Or after setting and energizing the air conditioner, click “Add appliance manually”...
Page 106 Air-to-water Heat Pump Split Versati SPLIT TYPE After accomplishing device reset and filling correct information, search device and arrange configuration. 3.3.2 Setting of Main Functions 1.Set mode and temperature.
Page 107 Air-to-water Heat Pump Split Versati SPLIT TYPE 2.Click Func at the left lower corner in device operation interface to enter advanced settings. 3.3.3 Setting of Other Functions Click the profile picture at the left upper corner of homepage and set each function in the following menu. 3.3.3.1 Home management Click “Home management”...
Page 108 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.3.3.2 Help Click “Help” and view the operation instructions of the APP.
Page 109 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.3.3 Feedback Click “Feedback” to submit feedback.
Page 110 1 Installation Guides WARNING • Installation should be performed by GREE appointed servicemen, or improper installation would lead to unusual operation, water leakage, electric shock or fire hazard. • The unit should be installed on the foundation which is capable of supporting the unit, or the unit would fall off or even lead to personal injury.
Page 111 Air-to-water Heat Pump Split Versati SPLIT TYPE (8) Drainage pipe is easy to connect out. (9) Do not install at a place where inflammable or explosive goods exist or inflammable or explosive gas might leak. (10) Do not install at a place subject to corrosive gas, severe dust, salty fog, smoke or heavy moisture. 1.2 Matters Need Attention (1) The installation of unit must be in accordance with national and local safety codes.
Page 112 Air-to-water Heat Pump Split Versati SPLIT TYPE Usage Name Picture Pipe and Pipe It is used to connect the water pipes. Joint Cut-off Valve It is used to cut off or get through the waterway. 3 Service Tools Name Picture Spanner Screw Driver Pliers...
Page 113 Air-to-water Heat Pump Split Versati SPLIT TYPE 4 Installation Instructions 4.1 Installation Examples CASE 1: Connecting Under-floor Coil for Heating and Cooling Indoor Outdoor Under-floor Coil FCU1 FCU2 Shut-off valve By-pass valve (field supplied) 2-way valve (field supplied) Note: the bypass valve must be installed to secure enough water flow rate, and should be installed at the collector.
Page 114 Air-to-water Heat Pump Split Versati SPLIT TYPE (2) Installation quality will directly affect the normal use of the air conditioner unit. The user is prohibited from installation by himself. Please contact your sales agent after buying this machine. Professional installation workers will provide installation and test services according to the installation manual.
Page 115 Air-to-water Heat Pump Split Versati SPLIT TYPE 4.4.3 Outline dimension of outdoor unit Unit:mm (1) GRS-CQ4.0Pd/NhH-E(O), GRS-CQ6.0Pd/NhH-E(O) (2) GRS-CQ8.0Pd/NhH-E(O), GRS-CQ10Pd/NhH-E(O)，GRS-CQ8.0Pd/NhH-M(O), GRS-CQ10Pd/NhH-M(O)
Page 116 Air-to-water Heat Pump Split Versati SPLIT TYPE (3) GRS-CQ4.0Pd/NhH2-E(O), GRS-CQ6.0Pd/NhH2-E(O) (4) GRS-CQ8.0Pd/NhH2-E(O), GRS-CQ10Pd/NhH2-E(O)
Page 117 Air-to-water Heat Pump Split Versati SPLIT TYPE (5) 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: Name Remarks GRS-CQ4.0Pd/NhH-E,GRS-CQ6.0Pd/NhH-E GRS-CQ8.0Pd/NhH-E,GRS-CQ10Pd/NhH-E GRS-CQ4.0PdG/NhH2-E, GRS-CQ6.0PdG/NhH2-E GRS-CQ8.0PdG/NhH2-E, GRS-CQ10PdG/NhH2-E Liquid-side Service Valve GRS-CQ12PdG/NhH2-E, GRS-CQ14PdG/NhH2-E 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-CQ4.0Pd/NhH-E,GRS-CQ6.0Pd/NhH-E GRS-CQ8.0Pd/NhH-E,GRS-CQ10Pd/NhH-E Gas-side Service Valve GRS-CQ4.0PdG/NhH2-E, GRS-CQ6.0PdG/NhH2-E GRS-CQ8.0PdG/NhH2-E, GRS-CQ10PdG/NhH2-E GRS-CQ8.0PdG/NhH2-M, GRS-CQ10PdG/NhH2-M...
Page 118 Air-to-water Heat Pump Split Versati SPLIT TYPE (2) Adopt M12 bolts components to tighten feet and under frame when installing. (3) Outdoor unit should be installed on concrete base that is 10cm height. (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.
Page 119 Air-to-water Heat Pump Split Versati SPLIT TYPE bears the qualification for using the flammable refrigerant. It can only be repaired by the method suggested by the equipment’s manufacturer. ◆ Installation notes The unit is not allowed to use in a room that has running fire (such as firesource, working coal gas ware, operating heater).
Page 120 Air-to-water Heat Pump Split Versati SPLIT TYPE 4.5 Installation of Indoor Unit 4.5.1 Select installation location of indoor unit (1) Avoid direct sunshine. (2) Ensure the hanger rod, ceiling and building structure have sufficient strength to support the weight of air conditioner unit.
Page 121 Air-to-water Heat Pump Split Versati SPLIT TYPE Outline dimension of indoor unit 4.5.3 1695 1756 Description: Unit: inch Remark Name Leaving Water 1″Male BSP Pipe Returning Water 1″Male BSP Pipe GRS-CQ4.0PdG/NhH-E(I), GRS-CQ6.0PdG/NhH-E(I) GRS-CQ8.0PdG/NhH-E(I), GRS-CQ10PdG/NhH-E(I) GRS-CQ4.0PdG/NhH2-E(I), GRS-CQ6.0PdG/NhH2-E(I) GRS-CQ8.0PdG/NhH2-E(I), GRS-CQ10PdG/NhH2-E(I) Liquid-side Pipe GRS-CQ12PdG/NhH2-E(I), GRS-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)
Page 122 Air-to-water Heat Pump Split Versati SPLIT TYPE Installation of the Water Tank Safety Valve Pressure of the water tank will gradually increase during heating and a safety valve is required to discharge some water for pressure relief. If not or installed incorrectly, it would make the water tank to expand, to be deformed, to be damaged or even lead to personal injury.
Page 123 Air-to-water Heat Pump Split Versati SPLIT TYPE 4.5.4 Precautions on installation of indoor unit (1) Keep the indoor unit away from heat sources like heat sink and so on in the room as much as possible. (2) Keep the indoor unit as close as possible to outdoor unit. Level distance between connection pipes cannotexceed 20m(4.0~6.0kW) or 25m (8.0~10kW) and vertical distance cannot exceed 15m.
Page 124 Air-to-water Heat Pump Split Versati SPLIT TYPE At the “PARAM.” page, select “Air removal” and go to the setting page as shown below, with options “Off”, • “Air” and “Water tank” available. Check pipe connectors and welding spots for water leak during water making-up. •...
Page 125 Air-to-water Heat Pump Split Versati SPLIT TYPE (b) Total water volume of 230 liter is default; if total water is changed because of installation condition, the prepressure should be adjusted to secure proper operation. If the indoor unit is located at the highest position, adjustment is not required;...
Page 126 Air-to-water Heat Pump Split Versati SPLIT 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 4.6 Connection of Pipeline 4.6.1 Connection of outlet pipe for indoor & outdoor unit (1) Align the expansion end of copper pipe with the center of threaded joint.
Page 127 Air-to-water Heat Pump Split Versati SPLIT TYPE (3) Wrap the pipe with tapes. • Use the adhesive tape to wrap the connecting pipe and cable into one bundle. To prevent condensate water from overflowing out of the drainpipe, the drainpipe shall be separated from connecting pipe and cable.
Page 128 Air-to-water Heat Pump Split Versati SPLIT TYPE Pipe size Length B Elevation A Additional (Diameter:Φ) Model refrigerant Liquid Standard Additional Standard Max. GRS-CQ4.0PdG/NhH-E 1/2" 1/4" 16g/m GRS-CQ6.0PdG/NhH-E 1/2" 1/4" 16g/m GRS-CQ8.0PdG/NhH-E 1/2" 1/4" 16g/m GRS-CQ10PdG/NhH-E 1/2" 1/4" 16g/m GRS-CQ4.0PdG/NhH2-E 1/2" 1/4"...
Page 129 Air-to-water Heat Pump Split Versati SPLIT TYPE 4.8 Electric Wiring (1) Wiring diagram of indoor units Wiring diagrams stuck to the unit always prevails. ◆ GRS-CQ4.0PdG/NhH-E(I),GRS-CQ6.0PdG/NhH-E(I), GRS-CQ8.0PdG/NhH-E(I),GRS-CQ10PdG/NhH- E(I) ◆ 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), GRS-CQ16PdG/NhH2-E(I)
Page 130 Air-to-water Heat Pump Split 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 of outdoor units ◆ GRS-CQ4.0Pd/NhH-E(O),GRS-CQ6.0Pd/NhH-E(O)
Page 131 Air-to-water Heat Pump Split Versati SPLIT TYPE ◆ GRS-CQ8.0Pd/NhH-E(O),GRS-CQ10Pd/NhH-E(O) ◆ GRS-CQ4.0Pd/NhH2-E(O), GRS-CQ6.0Pd/NhH2-E(O)
Page 132 Air-to-water Heat Pump Split 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 133 Air-to-water Heat Pump Split 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 134 Air-to-water Heat Pump Split Versati SPLIT TYPE 4.9 Wiring of the Terminal Board ◆ GRS-CQ4.0PdG/NhH-E(I),GRS-CQ6.0PdG/NhH-E(I),GRS-CQ8.0PdG/NhH-E(I), GRS-CQ10PdG/NhH- E(I)
Page 135 Air-to-water Heat Pump Split Versati SPLIT TYPE ◆ 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 Gate- Other Water Thermostat 2-way 3-way Pump Control Water Pump controller...
Page 136 Air-to-water Heat Pump Split 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) Terminal board XT2 10 2 12 13 14 15 16 17 20 21 20 25 26 27 28 11 2 Gate- Other Water Water tank Thermostat Pump 2-way...
Page 137 Air-to-water Heat Pump Split Versati SPLIT TYPE WARNING (1) Normally Open type should be connected to wire (OFF) and wire (N) for valve closing in cooling mode. (2) Normally Closed type should be connected to wire (ON) and wire (N) for valve closing in cooling mode. (ON): Live signal (for Normally Open type) from PCB to 2-way valve (OFF): Live signal (for Normally Closed type) from PCB to 2-way valve (N): Neutral signal from PCB to 2-way valve...
Page 138 Air-to-water Heat Pump Split Versati SPLIT TYPE Step 2. Electric wiring work Other thermal L and N connect to XT2~4,5. (1) GRS-CQ4.0PdG/NhH-E,GRS-CQ6.0PdG/NhH-E, GRS-CQ8.0PdG/NhH-E, GRS-CQ10.0PdG/NhH-E T-optional sensor T-optional sensor (accessory) Other Thermal (2) GRS-CQ4.0PdG/NhH2-E, GRS-CQ6.0PdG/NhH2-E, GRS-CQ8.0PdG/NhH2-E, GRS-CQ10PdG/NhH2-E, GRS-CQ12PdG/NhH2-E, GRS-CQ14PdG/NhH2-E, 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 Other thermal L and N connect to XT3~1,2 Other...
Page 139 Air-to-water Heat Pump Split Versati SPLIT TYPE (2) GRS-CQ4.0PdG/NhH2-E, GRS-CQ6.0PdG/NhH2-E, GRS-CQ8.0PdG/NhH2-E, GRS-CQ10PdG/NhH2-E, GRS-CQ12PdG/NhH2-E, GRS-CQ14PdG/NhH2-E, 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 If there is gate control function, installation guide follow as: 220VAC 4.13 Wiring of the Remote Air Temperature Sensor...
Page 140 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 141 Air-to-water Heat Pump Split Versati SPLIT TYPE (2) GRS-CQ4.0PdG/NhH2-E, GRS-CQ6.0PdG/NhH2-E, GRS-CQ8.0PdG/NhH2-E, GRS-CQ10PdG/NhH2-E, GRS-CQ12PdG/NhH2-E, GRS-CQ14PdG/NhH2-E, 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 Installation of the thermostat is very similar to that of the remote air temperature sensor. 12 13 14 15 Thermostat How to Wire Thermostat Uncover the front cover of indoor unit and open the control box;...
Page 142 Air-to-water Heat Pump Split Versati SPLIT TYPE 5 Commissioning and Trial Run 5.1 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 maintenance personnel. Confirm together with the sales engineer, sales agent, installing contractor and users for the following items finished or to be finished.
Page 143 Air-to-water Heat Pump Split Versati SPLIT TYPE Trial run is to test whether the unit can run normally via preoperation. If the unit cannot run normally, find and solve problems until the trial run is satisfactory. All inspections must meet the requirements before performing the trial run.
Page 144 When there is any error, solve it according to the troubleshooting flowchart covered in this manual. However, if the troubleshooting flowchart is still unhelpful, please contact GREE sales distributor. 2 Error Code List...
Page 145 Air-to-water Heat Pump Split Versati SPLIT TYPE Full Name Displayed Name Error Code Communication error between the display panel and indoor IDU Com. main board High pressure sensor error HI-pre. sens. Leaving water temperature sensor error for the plate type Temp-HELW heat exchanger of the heat pump Leaving water temperature sensor error for the auxiliary...
Page 146 Air-to-water Heat Pump Split Versati SPLIT TYPE 3 Flow Chart of Troubleshooting 3.1 Compressor High-pressure Protection E1 Comp High-pressure protection E1 Replace the High-pressure Check if the High-pressure switch switch is broken Check if the High-pressure switch Replace the wiring wiring is loose.
Page 147 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.2 Commpressor Low- pressure Protection E3 Comp Low-pressure Protection E3 Replace comp Check if comp low-pressure switch low- pressure or rewire is broken or the wiring is loose. Check the fans Check if the fans stop running or reverse Repair the leakage of system pipe and add refrigerant Check if the system has leaked...
Page 148 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.4 Overload Protection of Compressor or Driver Error Comp Overload Protection Check if the AC Replace the AC contactor contactor is damaged Adjust the Check if the compressor compressor wiring wiring is correct Contact the power Check if the voltage is normal supply company...
Page 149 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.6 Temperature Sensor Error Temperature Sensor Error Check if the plug Check the orientation on temperature sensor is correctly of plug and socket connected to the socket. Check if the resistance of Replace the temperature sensor is correct.
Page 150 Air-to-water Heat Pump Split Versati SPLIT TYPE 3.8 Capacity Switch Error (Code:"C5") E5 is displayed on the wired controller Is the jumper Connect the jumper connected ? Is the number Connect the right of the jumper jumper right ? Is the jumper Tighten the jumper loose ? Replace the...
Page 151 Air-to-water Heat Pump Split Versati SPLIT TYPE ◆ IPM or PFC Over-temperature Protection(Code:"P8") “Overtemp.-mod.” is displayed on the wired controller P8 is displayed in the mainboard 88 Indicating Lamp Is the IPM or PFC module of the driver board AP4 tightened ? Tighten the IPM or Replace the...
Page 152 Air-to-water Heat Pump Split Versati SPLIT TYPE ◆ Drive-to-main-control Communication Error(Code:"P6") “Drive-main com.” is Displayed on the wired controller P6 is displayed in the mainboard 88 Indicating Lamp Is the CPU tightened? Replace Tighten the CPU the driver board AP4 Work Normally ◆...
Page 153 Air-to-water Heat Pump Split Versati SPLIT TYPE ◆ Compressor Current Protection (Code:"P5"); Compressor Motor Desynchronizing (Code:"H7"); IPM Protection (Code:"H5"); Phase Loss (Code:"LD") “Com. over-curr.”, “Desynchronize”, “IPM defective” or “Phase loss” is Displayed on the wired controller P5、H7、H5 or LD is displayed in the mainboard 88 indicating lamp Is the...
Page 154 Air-to-water Heat Pump Split Versati SPLIT TYPE 5 Daily Maintenance and Repair 5.1 Daily Maintenance In order to avoid damage of unit, all protecting devices in the unit have been set before packaging and delivering, so the user can never adjust or remove them. For the first startup of the unit or next startup of unit after long-period stop (above 1 day) by cutting off the power, please electrify the unit in advance to preheat the unit for more than 8hr Never put sundries on the unit and accessories.
Page 155 Air-to-water Heat Pump Split Versati SPLIT TYPE Malfunctions Reasons Troubleshooting 1.Enhance heat insulation efficiency of the 1.Poor heat insulation of water system. system. Poor efficiency of hot 2.Check if air in or out of unit is normal and 2.Poor heat exchange of evaporator. water heating 3.Poor refrigerant of unit.
Page 156 Air-to-water Heat Pump Split Versati SPLIT TYPE Picture Name Function It is used to prevent the heat exchanger from being frozen owing to reduced water flow rate. When the flow rate goes Flow Switch down to the point at which the flow switch will act, the switch will trip off and the unit will raise an alarm and shut down.
Page 157 Air-to-water Heat Pump Split Versati SPLIT TYPE system both before and during the brazing process. Note: before and during operation, use an appropriate refrigerant leak detector to monitor the operation area and make sure the technicians can be well aware of any potential or actual leakage of inflammable gas. Make sure the leak detecting device is applicable to inflammable refrigerant.
Page 158 Air-to-water Heat Pump Split Versati SPLIT TYPE 4. Open the lower panel, you can see the position of the electronic anode and the drain, open the drain switch, and empty the water in the water tank; Electrnoic anode Drain ...
Page 159 Air-to-water Heat Pump Split Versati SPLIT TYPE 6. Use a Phillips screwdriver to remove one screw securing the power cord; 7. Use a spanner wrench to remove the old electronic anode ...
Page 160 Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522219 Fax: (+86-756) 8669426 E-mail: gree@cn.gree.com www.gree.com For continuous improvement in the products, Gree reserves the right to modify the product specification and appearance in this manual without notice and without incurring any oblication. JF00304426...

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