Page 1 DC INVERTER MULTI VRF Service Manual T1/R410A/50Hz GREE ELECTRIC APPLIANCES INC. OF ZHUHAI...
Page 2: Table Of Contents
CONTENTS PRODUCT..............................2 1 MODELS LIST ..........................2 1.1 Outdoor Unit ..........................2 1.2 Indoor Unit..........................3 2 NOMENCLATURE ........................... 8 2.1 Nomenclature of outdoor unit ....................8 2.2 Nomenclature of indoor unit ..................... 8 3 FUNCTION ............................9 4 PRODUCT DATA ..........................10 4.1 Product data of outdoor......................
Page 3 4.6 cassette type indoor unit......................127 5 INSTALLATION REQUIREMENTS OF REFRIGERANT PIPING ........138 5.1 Specification of refrigerant pipe.................... 138 5.2 Allowable Length and Height Differences of the Refrigerant Piping between the Indoor and Outdoor Units..........................138 5.3 Size of Connection Pipe ......................138 6 INSTALLATION OF REFRIGERANT PIPING ................
Page 4 GREE COMMERCIAL AIR CONDITIONER DC INVERTER MULTI VRF PRODUCT...
Page 5: Product
DC INVERTER MULTI VRF PRODUCT PRODUCT 1 MODELS LIST 1.1 Outdoor Unit Capacity Units Power Model Ref. Appearance Series Cooling Heating Supply (Btu/h) (Btu/h) 220-240V R410A GMV(L)-Pd100W/NaB-K 34120 37532 ~50Hz 220-240V R410A GMV(L)-Pd120W/NaB-K 40944 47768 ~50Hz Inverter Multi VRF 220-240V...
Page 6: Indoor Unit
DC INVERTER MULTI VRF PRODUCT 1.2 Indoor Unit 1.2.1 Duct type Capacity Power Model Appearance Cooling Heating Supply (Btu/h) (Btu/h) GMV-R22P/Na-K 8530 7507 GMVL-R22P/Na-K GMV-R25P/Na-K 10236 8530 GMVL-R25P/Na-K GMV-R28P/Na-K 10918 9554 GMVL-R28P/Na-K GMV-R32P/Na-K 12283 10919 GMVL-R32P/Na-K GMV-R36P/Na-K 13648 12284 GMVL-R36P/Na-K...
Page 7 DC INVERTER MULTI VRF PRODUCT Capacity Power Model Appearance Cooling Heating Supply (Btu/h) (Btu/h) GMV-R22P/NaB-K 8530 7507 GMVL-R22P/NaB-K GMV-R28P/NaB-K 10918 9554 GMVL-R28P/NaB-K GMV-R36P/NaB-K 13648 12284 GMVL-R36P/NaB-K GMV-R45P/NaB-K 17060 15355 GMVL-R45P/NaB-K GMV-R56P/NaB-K 21496 220-240V 19108 R410A ~50Hz GMVL-R56P/NaB-K GMV-R71P/NaB-K 27296 24226...
Page 8 DC INVERTER MULTI VRF PRODUCT 1.2.2 Cassette type Capacity Power Model Appearance Cooling Heating Supply (Btu/h) (Btu/h) 220-240V GMV-R22T/NaA-K 8530 R410A ~50Hz 7506 GMVL-R22T/NaA-K GMV-R28T/NaA-K 10900 9550 GMVL-R28T/NaA-K GMV-R36T/NaA-K 13650 12280 GMVL-R36T/NaA-K GMV-R45T/NaA-K 17060 15360 GMVL-R45T/NaA-K GMV-R28T/Na-K 10900 9550 GMVL-R28T/Na-K...
Page 9 DC INVERTER MULTI VRF PRODUCT GMVL-R125T/Na-K GMV-R140T/Na-K 49470 47770 GMVL-R140T/Na-K GMV-R22Td/Na-K 8530 7506 GMVL-R22Td/Na-K GMV-R28Td/Na-K 10900 220-240V R410A 9550 ~50Hz GMVL-R28Td/Na-K GMV-R36Td/Na-K 13650 12280 GMVL-R36Td/Na-K Conversion Formula: Btu/h=kW×3412 1.2.3 Wall mounted type Capacity Power Model Appearance Cooling Heating Supply (Btu/h)
Page 10 DC INVERTER MULTI VRF PRODUCT 1.2.4Floor ceiling type Capacity Power Model Appearance Cooling Heating Supply (Btu/h) (Btu/h) GMV-R28Zd/Na-K 10919 9554 GMVL-R28Zd/Na-K GMV-R36Zd/Na-K 13649 12284 GMVL-R36Zd/Na-K GMV-R50Zd/Na-K 19790 17061 GMVL-R50Zd/Na-K GMV-R71Zd/Na-K 27297 220-240V 24226 R410A ~50Hz GMVL-R71Zd/Na-K GMV-R90Zd/Na-K 34121 30709 GMVL-R90Zd/Na-K...
Page 11: Nomenclature
DC INVERTER MULTI VRF PRODUCT 2 NOMENCLATURE 2.1 Nomenclature of outdoor unit □ Description Options Code for type GMV=Gree Multi Variable Code for weather Default:T1 T2:T2 weather T3:T3 weather L: Cooling Only Code for model Default: Heat pump Units Series...
Page 12: Function
DC INVERTER MULTI VRF PRODUCT 3 FUNCTION Auto Restart Fan Operation Mode LCD Remote Controller (Option) Auto Swing Function Ceiling Soiling Prevention Comfortable Program Dry Air Conditioning High Fan Speed Mode High Ceiling Application Two Select Thermo Sensor Hot Start...
Page 13: Product Data
DC INVERTER MULTI VRF PRODUCT 4 PRODUCT DATA 4.1 Product data of outdoor Model GMV(L)-Pd100W/NaB-K GMV(L)-Pd120W/NaB-K 10.0 12.0 Cooling Btu/h 34120 40944 Capacity 11.0 14.0 Heating Btu/h 37532 47768 Sound Pressure Level dB(A) R410A Filling Amount Power Supply V,Ph,Hz 220V-240V~,1Ph,50Hz...
Page 14 DC INVERTER MULTI VRF PRODUCT 14.0 16.0 Cooling Btu/h 47768 54592 Capacity 15.4 17.6 Heating Btu/h 52545 60051 Sound Pressure Level dB(A) R410A Filling Amount Power Supply V,Ph,Hz 220V-240V~,1Ph,50Hz 220V-240V~,1Ph,50Hz Cooling 4.36 4.98 Power input Heating 4.05 4.85 Cooling 20.5 23.2...
Page 15: Product Data Of Indoor
DC INVERTER MULTI VRF PRODUCT 4.2 Product data of indoor 4.2.1 Duct Type Model GMV(L)-R22P/Na-K GMV(L)-R25P/Na-K GMV(L)-R28P/Na-K Cooling Capacity 7506 8530 9554 Heating Capacity 8530 10236 10918 m3/h Air Flow Rate Sound Pressure Level (H/L) dB(A) 37/33 37/33 39/35 External Static Pressure...
Page 16 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R32P/Na-K GMV(L)-R36P/Na-K GMV(L)-R40P/Na-K Cooling Capacity 10919 12284 13649 Heating Capacity 12283 13648 15354 m3/h Air Flow Rate Sound Pressure Level (H/L) dB(A) 39/35 39/35 40/36 External Static Pressure Power Supply 220-240V 50Hz 220-240V 50Hz...
Page 17 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R45P/Na-K GMV(L)-R50P/Na-K GMV(L)-R56P/Na-K Cooling Capacity 15355 17061 19108 Heating Capacity 17060 19790 21496 m3/h 1400 Air Flow Rate Sound Pressure Level (H/L) dB(A) 40/36 40/36 42/38 External Static Pressure Power Supply 220-240V 50Hz 220-240V 50Hz...
Page 18 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R63P/Na-K GMV(L)-R71P/Na-K GMV(L)-R80P/Na-K Cooling Capacity 21496 24226 27297 Heating Capacity 23884 27296 30026 m3/h 1400 1400 1400 Air Flow Rate Sound Pressure Level (H/L) dB(A) 42/38 42/38 42/38 External Static Pressure Power Supply 220-240V 50Hz...
Page 19 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R90P/Na-K GMV(L)-R100P/Na-K GMV(L)-R112P/Na-K 10.0 11.2 Cooling Capacity 30709 34121 38216 10.0 11.0 12.5 Heating Capacity 34120 37532 42650 m3/h 2000 2000 2000 Air Flow Rate 1177 1177 1177 Sound Pressure Level (H/L) dB(A) 44/40...
Page 20 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R125P/Na-K GMV(L)-R140P/Na-K 12.5 14.0 Cooling Capacity 42652 47770 13.5 15.0 Heating Capacity 46060 51180 m3/h 2000 2000 Air Flow Rate 1177 1177 Sound Pressure Level (H/L) dB(A) 44/40 45/41 External Static Pressure Power Supply...
Page 21 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R22P/NaB-K GMV(L)-R28P/NaB-K GMV(L)-R36P/NaB-K Cooling Capacity 7507 9554 12284 Heating Capacity 8530 10918 13648 m3/h Air Flow Rate Sound Pressure Level (H/L) dB(A) 37/33 39/35 39/35 External Static Pressure 50/20 50/20 50/20 Power Supply 220-240V 50Hz...
Page 22 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R45P/NaB-K GMV(L)-R56P/NaB-K GMV(L)-R71P/NaB-K Cooling Capacity 15355 19108 24226 Heating Capacity 17060 21496 27296 m3/h 1000 1100 Air Flow Rate Sound Pressure Level (H/L) dB(A) 40/36 44/40 45/41 External Static Pressure 50/20 60/30 60/30 Power Supply...
Page 23 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R90P/NaB-K GMV(L)-R112P/NaB-K GMV(L)-R140P/NaB-K 11.2 14.0 Cooling Capacity 30709 38216 47770 10.0 12.5 15.0 Heating Capacity 34120 42650 51180 m3/h 1700 1700 2000 Air Flow Rate 1177 1177 1001 Sound Pressure Level (H/L) dB(A) 48/44...
Page 24 DC INVERTER MULTI VRF PRODUCT GMV(L)-R22PS/NaB- GMV(L)-R28PS/Na GMV(L)-R36PS/Na Model Cooling Capacity 7507 9554 12284 Heating Capacity 8530 10918 13648 m3/h Air Flow Rate Sound Pressure Level (H/L) dB(A) 37/33 39/35 39/35 External Static Pressure 50/20 50/20 50/20 Power Supply 220-240V 50Hz...
Page 25 DC INVERTER MULTI VRF PRODUCT GMV(L)-R45PS/NaB- GMV(L)-R56PS/NaB- GMV(L)-R71PS/NaB- Model Cooling Capacity 15355 19108 24226 Heating Capacity 17060 21496 27296 m3/h 1000 1100 Air Flow Rate Sound Pressure Level (H/L) dB(A) 40/36 44/40 45/41 External Static Pressure 50/20 60/30 60/30 Power Supply...
Page 26 DC INVERTER MULTI VRF PRODUCT GMV(L)-R90PS/NaB- GMV(L)-R112PS/NaB GMV(L)-R140PS/NaB Model 11.2 14.0 Cooling Capacity 30709 38216 47770 10.0 12.5 15.0 Heating Capacity 34120 42650 51180 m3/h 1700 1700 2000 Air Flow Rate 1177 1177 1001 Sound Pressure Level (H/L) dB(A) 48/44...
Page 27 DC INVERTER MULTI VRF PRODUCT 4.2.2Cassete Type GMV (L)- GMV(L)- GMV(L)- GMV(L)- Model R22T/NaA-K R28T/NaA-K R36T/NaA-K R45T/NaA-K Cooling Capacity 7506 9554 12283 15354 Heating Capacity 8530 10918 13648 17060 m3/h Air Flow Rate Sound Pressure Level (H/L) dB(A) 47/41 47/41...
Page 28 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R28T/Na-K GMV(L)-R36T/Na-K GMV(L)-R45T/Na-K Cooling Capacity 9550 12280 15360 Heating Capacity 10900 13650 17060 m3/h Air Flow Rate Sound Pressure Level (H/L) dB(A) 37/34 37/34 37/34 External Static Pressure Power Supply 220-240V 50Hz 220-240V 50Hz...
Page 29 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R50T/Na-K GMV(L)-R56T/Na-K GMV(L)-R63T/Na-K Cooling Capacity 17060 19100 21500 Heating Capacity 19790 21500 23890 m3/h 1180 1180 Air Flow Rate Sound Pressure Level (H/L) dB(A) 37/34 39/35 39/35 External Static Pressure Power Supply 220-240V 50Hz...
Page 30 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R71T/Na-K GMV(L)-R80T/Na-K GMV(L)-R90T/Na-K Cooling Capacity 24230 27300 30700 10.0 Heating Capacity 27300 30030 34120 m3/h 1180 1180 1860 Air Flow Rate 1095 Sound Pressure Level (H/L) dB(A) 39/35 39/35 40/36 External Static Pressure Power Supply...
Page 31 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R100T/Na-K GMV(L)-R112T/Na-K 10.0 11.2 Cooling Capacity 34120 38210 11.0 12.5 Heating Capacity 37540 42650 m3/h 1860 1860 Air Flow Rate 1095 1095 Sound Pressure Level (H/L) dB(A) 40/36 40/36 External Static Pressure Power Supply...
Page 32 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R125T/Na-K GMV(L)-R140T/Na-K 12.5 14.0 Cooling Capacity 42650 47770 13.5 14.5 Heating Capacity 46062 49470 m3/h 1860 1860 Air Flow Rate 1095 1095 Sound Pressure Level (H/L) dB(A) 40/36 40/36 External Static Pressure Power Supply...
Page 33 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R22Td/Na-K GMV(L)-R28Td/Na-K GMV(L)-R36Td/Na-K Cooling Capacity 7506 9550 12280 Heating Capacity 8530 10900 13650 m3/h Air Flow Rate Sound Pressure Level (H/L) dB(A) 45/41 45/41 45/41 External Static Pressure Power Supply 220-240V 50Hz 220-240V 50Hz...
Page 34 DC INVERTER MULTI VRF PRODUCT 4.2.3 Wall mounted Type Model GMV(L)-R22G/NaB-K GMV(L)-R28G/NaB-K GMV(L)-R36G/NaB-K Cooling Capacity 7507 9554 12284 Heating Capacity 8530 10919 13649 m3/h Air Flow Rate Sound Pressure Level dB(A) 37/28 37/28 43/28 (H/L) External Static Pressure Power Supply...
Page 35 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R45G/NaB-K GMV(L)-R50G/NaB-K GMV(L)-R56G/NaB-K Cooling Capacity 15355 17061 19108 Heating Capacity 17061 19790 21496 m3/h Air Flow Rate Sound Pressure Level dB(A) 43/28 45/40 45/40 (H/L) External Static Pressure Power Supply 220-240V~50Hz 220-240V~50Hz 220-240V~50Hz Output 0.022...
Page 36 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R22G/NaC-K GMV(L)-R28G/NaC-K GMV(L)-R36G/NaC-K Cooling Capacity 7507 9554 12284 Heating Capacity 8530 10919 13649 m3/h Air Flow Rate Sound Pressure Level dB(A) 37/28 37/28 43/28 (H/L) External Static Pressure Power Supply 220-240V~50Hz 220-240V~50Hz 220-240V~50Hz Output 0.014...
Page 37 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R45G/NaC-K GMV(L)-R71G/Na-K GMV(L)-R80G/Na-K Cooling Capacity 15355 24226 27297 Heating Capacity 17061 27297 30709 m3/h 1200 1200 Air Flow Rate Sound Pressure Level dB(A) 43/28 49/42 49/42 (H/L) External Static Pressure Power Supply 220-240V~50Hz 220-240V~50Hz...
Page 38 DC INVERTER MULTI VRF PRODUCT 4.2.4Floor Ceiling Type Model GMV(L)-R28Zd/Na-K GMV(L)-R36Zd/Na-K GMV(L)-R50Zd/Na-K Cooling Capacity 9554 12284 17061 Heating Capacity 10919 13649 19790 m3/h Air Flow Rate Sound Pressure Level dB(A) 43/- 44/- 50/- (H/L) External Static Pressure Power Supply 220-240V~50Hz...
Page 39 DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R71Zd/Na-K GMV(L)-R90Zd/Na-K Cooling Capacity 24226 30709 10.0 Heating Capacity 27297 34121 m3/h 1170 2100 Air Flow Rate 1236 Sound Pressure Level (H/L) dB(A) 48/- 51/- External Static Pressure Power Supply 220-240V 50Hz 220-240V 50Hz Output 0.15...
Page 40: Operation Range
DC INVERTER MULTI VRF PRODUCT Model GMV(L)-R112Zd/Na-K GMV(L)-R125Zd/Na-K 11.2 12.5 Cooling Capacity 38216 42652 12.5 13.5 Heating Capacity 42652 46064 m3/h 2200 2300 Air Flow Rate 1295 1354 Sound Pressure Level (H/L) dB(A) 54/- 55/- External Static Pressure Power Supply...
Page 41: Piping Diagram
DC INVERTER MULTI VRF PRODUCT 5 PIPING DIAGRAM 5.1 Cooling Only Heat Exchanger with Axial Flow Fan Receiver extra condenser ic valve Outdoor side Capillary Oil separator High pressure switch Compressor Accumulator Stop valve Heat Exchanger with Centrifugal Fan Electronic...
Page 42: Heat Pump
DC INVERTER MULTI VRF PRODUCT 5.2 Heat Pump Electronic expansion valve Filter Filter Heat exchanger with axial flow fan way valve Receiver Extra condenser way valve Electricmagnetic valve Capillary Outdoor side Capillary Oil separator Compressor Accumulator Stop valve Indoor side...
Page 43 GREE COMMERCIAL AIR CONDITIONER DC INVERTER MULTI VRF CONTROL...
Page 44: Control
DC INVERTER MULTI VRF CONTROL CONTROL 1 OPERATION FLOWCHART...
Page 45: Cooling/Dry Operation
DC INVERTER MULTI VRF CONTROL 1.1 Cooling/Dry Operation Cooling Operation There Is Not Guide Louver There Is Guide Louvers Swing Fan Motor: Operation In The Process Of Preventing Restart Operation? (3 Minutes) Temperature Adjustment? Fan Motor:Stop Electronic Expansion Valve: Close...
Page 46: Heating Operation
DC INVERTER MULTI VRF CONTROL 1.2 Heating Operation...
Page 47: Main Logic
DC INVERTER MULTI VRF CONTROL 2 MAIN LOGIC 2.1 Control Function of Outdoor Unit Compressor Capacity Output It is defined that the full load capacity output of the compressor is 100%. The compressor capacity output is calculated according to the required indoor load, which is related to the following factors: whether the indoor unit is started, the set temperature, the indoor ambient temperature, the outdoor ambient temperature, etc.
Page 48 DC INVERTER MULTI VRF CONTROL frequency-reducing. Initial Sequence Chart of Heating Mode: Before the first starting of compressor, you should keep it running for 3min at 60Hz, and then switch to the target frequency. The dwell time is separately 5min and 5 min when the frequency passes 75 Hz and 90 Hz.
Page 49 DC INVERTER MULTI VRF CONTROL Shown as the following figure: To the target frequency Frequency Initialization pause point Inverter controller Power the four-way valve if the high and low voltage 4-way Valve deviation is no less than 3kg/cm2G Initialization Outdoor unit EXV...
Page 50 DC INVERTER MULTI VRF CONTROL Outdoor dry bulb temperature ( ) Or the outdoor ambient temperature is below -6 ; and keeps heating (the four-way valve is under the heating position) for 2 hours; Defrosting Stop Conditions: Outdoor coil pipe temperature is higher than 15 or the defrosting is running for 10 minutes continuously.
Page 51 DC INVERTER MULTI VRF CONTROL Heating timer Defrosting mark Defrosting timer Compressor frequency 4-way Valve High fan Outdoor fan Outdoor electronic expansion valve Air Bypass OFF Anti-cold air operation Indoor fan ON Indoor electronic expansion valve T = <10 Minutes...
Page 52 DC INVERTER MULTI VRF CONTROL run at the set speed regardless of the capacity requirement is 0 or not. When the indoor fan is set at automatic fan speed, the fan will determine the fan according to the changes of indoor...
Page 53 DC INVERTER MULTI VRF CONTROL When the indoor unit has capacity requirement: If the automatic fan speed is not set, the indoor fans will unceasingly run at the setting speed. When the indoor fan is set at automatic speed, the fan will determine the fan speed according to the changes...
Page 54 DC INVERTER MULTI VRF CONTROL / t C evaporator v-evaporator High Setting speed Fan OFF / t s Failing to reach the valve value within one minute evaporator Once the indoor unit started under heating operation, if the fan stops in any case (including starting up, defrosting, fault, no capability needs), the anti cold air operation will keep before starting the fan for the next time.
Page 55 DC INVERTER MULTI VRF CONTROL Expansion valve ON Expansion Valve OFF Indoor ambient temperature (air inlet temperature) Indoor Setting Temperature Temperature regulation under standard conditions Expansion valve ON Expansion Valve OFF Indoor ambient temperature (air inlet temperature) Indoor Setting Temperature...
Page 56 DC INVERTER MULTI VRF CONTROL the flooding signal disappears. Cooling stop Cooling Non-cooling Non-cooling Compressor start Compressor stop Compressor stop Pump start Pump start Pump Pump stop Pump stop stop Water full Water full signal is valid signal is Water full signal is disappears...
Page 57 DC INVERTER MULTI VRF CONTROL When the evaporator temperature sensor is in trouble, the evaporator temperature is measured lower than -30 or higer than 100 for one minute continuously,, the evaporator temperature sensor error signal will disappear, and the indoor unit will operate as the former state.
Page 58 DC INVERTER MULTI VRF CONTROL 11) About functional DIP swicth S7 ( for Na-K series) Before the mainboard is electrified, the setting of DIP swicth S7 must be finished, this switch will decide the working mode of indoor unit; the position of ducted units is 4, and other machine is 3.
Page 59 DC INVERTER MULTI VRF CONTROL Setting of main and slave indoor units Main indoor Slave 3 M / S A For resolution of conflict among the modes. unit indoor unit B This function is available without wired controller. About functional DIP swicth S7 ( for Ducted Type)
Page 60 DC INVERTER MULTI VRF CONTROL When there is only one indoor unit that is set to be master indoor unit, in that case, no matter if the master indoor unit is firstly started, the conflict mode error will be warned by slave indoor unit once the mode of slave indoor unit and the mode of master indoor unit conflict (except for turnoff mode of master/slave indoor unit).
Page 61 DC INVERTER MULTI VRF CONTROL 5-bit functional DIP switch Address Functional Switch S1 Switch S7 Mainboard of 4-bit Functional DIP switch...
Page 62: Wireless Remote Controller
DC INVERTER MULTI VRF CONTROL 3 WIRELESS REMOTE CONTROLLER NOTE! ● Make sure that there is no obstruction between the remote control and the signal receptor. ● The remote control signal can be received at the distance of up to about 10m.
Page 63 DC INVERTER MULTI VRF CONTROL NOTE! This type of remote control is a kind of general use remote control that is suitable for several types (function) of air conditioner units. Please understand that the functions and buttons that are not suitable for this air conditioner will not be introduced.
Page 64 DC INVERTER MULTI VRF CONTROL How to insert batteries Two batteries (Two AAA dry-cell batteries) are used by the remote control 1. Remote the cover from the back of the remote control downward, take out the worn batteries and insert two new ones (Make sure the two poles are correct) 2.
Page 65: Wired Controller
DC INVERTER MULTI VRF CONTROL 4 WIRED CONTROLLER 4.1 Operation and Display View Various Components of Wired controller Operating mode display (Cool, Dry, Fan, Heat) On/Off button Sleep mode display Timer button Ambient temp.display /Malfunction display Sleep button Fan control display (automatic, high, media, low) Swing display Set Temp.
Page 66: Installation
DC INVERTER MULTI VRF CONTROL 4.3 Installation Fig.4.3 Installation of wired controller Name Casing base, installed into the wall Controller Soleplate Screw M4X25 Controller Panel ●Notice for installation under the guidance of Fig.10 1. Cut off power supply before installing the electrical components.It is forbidden to carry out the installation with power on;...
Page 67: Mini Centralized Controller (Region Controller)
DC INVERTER MULTI VRF CONTROL 5 MINI CENTRALIZED CONTROLLER (REGION CONTROLLER) 5.1 Function Region monitoring control and region wired control are the two main control functions for region controller. Region monitoring controller can monitor or control 16 indoor units of a group for inquiry and single or centralized control.
Page 68: Operation View
DC INVERTER MULTI VRF CONTROL 5.2 Operation View Fig.5.2 Instruction to functions of buttons (Table 5.1) Name Function A. Switch the control mode of inquiry/single/ central control. FUNC B. In central control status, give the central order by successively pressing FUNC (FUNCTION) button.
Page 69: Display View
DC INVERTER MULTI VRF CONTROL 5.3 Display View (Fig.5.3) Display name Instruction to display Inquiry state, “INQUIRY” is displayed. Control mode Single control state,”SINGLE” is displayed. Centralized control state, “CENTER” is displayed. Running mode Each indoor unit running mode is displayed.
Page 70: Connection Between Controller And Unit
DC INVERTER MULTI VRF CONTROL Melt “Melt” is displayed during defrosting. Region monitoring controller A: Inquiry state: “LOCK” is displayed when selected indoor unit is locked. Lock B: Control state: “LOCK” is displayed during setting or giving the lock order.
Page 71: Centralized Controller
DC INVERTER MULTI VRF CONTROL electromagnetic interference. 1. Keep the signal lines or wirings (communication) of region controller or wired controller at least 20 cm from the power cords or connecting lines between indoors and outdoors to prevent abnormal communication.
Page 72 DC INVERTER MULTI VRF CONTROL This central control has Sequence On function, that enable conduction to sequence control ALL ON to communication modular in interval of 2 seconds, communication modular controls Sequence On of indoor units (to lower impact to power network).
Page 73: Display View
DC INVERTER MULTI VRF CONTROL 6.3 Display View (Fig.6.3.1) Sketch for LCD part: (Fig.6.3.2) Pagination/displays Under select control mode, group no. that is present controlling is displayed; present domain Under addresses setting state, present Soft Add is displayed. Displays the soft address of communication module that the present checking or Present unit no.
Page 74: Communication Network Connection
DC INVERTER MULTI VRF CONTROL Setting operation mode of central control. It should be completed by installation System setting personnel, but not for users. Control mode Displays 3 control modes of Central, Single and Select controls When Indoor on, addresses of present online indoor unit is displayed;...
Page 75: Case Study
DC INVERTER MULTI VRF CONTROL 6.5 Case Study Take one floor of an office building for example to illustrate wiring and debugging of the centralized control system. In this floor, there are 2 assembly rooms, 8 offices and 1 monitor room. Refer to the following illustration for its plane structure.
Page 76 DC INVERTER MULTI VRF CONTROL 2 Frame Diagram of System Net...
Page 77 DC INVERTER MULTI VRF CONTROL Instruction to Frame Diagram of System Net Mark A:Outdoor Unit GMV(L)-Pd160W/NaB-K can be connected with up to 16 indoor units. In this project, this outdoor unit is connected with the communication module with address of 01 and indoor units (address 01~12 of office 1-6, corresponding with independent communication Net.2.
Page 78 DC INVERTER MULTI VRF CONTROL Pinboard 2 3-core neilsbed connects with indoor unit or communication module and 4-core neilsbed with outdoor unit Pinboard 1 3-core neilsbed connects with indoor unit modules, 4-core neilsbed with outdoor unit Mark C: Centralized controller cabinet is mainly used to put communication modules together. Refer to Section 3 Instruction to Installation Procedure of System about its figure and connection method of communication modules.
Page 79 DC INVERTER MULTI VRF CONTROL C. Connection of communication modules COM 1 of communication module can connect with indoor and outdoor unit. The two COM2 can connect with other communication module or centralized controller. As shown in the following figure: D.
Page 80 DC INVERTER MULTI VRF CONTROL In this case, there are two methods to connection of them. Method 1: Welding Weld the two cutting terminals by yellow to yellow and brown to brown, as shown below: And then weld the terminals of communication line to COM1 with the welding spots in the above figure...
Page 81 DC INVERTER MULTI VRF CONTROL Method 2: Triple adapter Make crystal heads for the three lines. The connection direction should be the sameas in the above welding figures, i.e. yellow to yellow and brown to brown wire of indoor and outdoor units, but yellow to brown wire of communication line to COM1.The crystal heads are as follow:...
Page 82 DC INVERTER MULTI VRF CONTROL Note: The above figure is only for reference to relation among the equipments. The actual wiring is subject to the above frame diagram of system Step 3: There are two methods of DIP address setting of communication module ●...
Page 83 DC INVERTER MULTI VRF CONTROL 2.Open the cover of communication module as below: The 8-digital DIP is as below: Set DIP for address according to the following table. Address from 0 to 31 Address from 32 to 63 Address Address...
Page 84 DC INVERTER MULTI VRF CONTROL...
Page 85 DC INVERTER MULTI VRF CONTROL Address from 64 to 95 Address from 96 to 127 Address Address DIP S2 DIP S3 DIP S2 DIP S3 Step 4: System Setting of Centralized Controller SYSTEM SETTING includes ADDRESS SETTING and INITIALIZE SETTING. The former one is used for...
Page 86 DC INVERTER MULTI VRF CONTROL 2. When ADDRESS SETTING is blinking, press SELECT button into address setting interface. Hard address Soft address Press LEFT or RIGHT button to switch between SOFT and Hard ADDRESS settings, and UP or Down button to adjust their values After adjustment, press CONFIRM button to make the address values corresponding and effective.
Page 87 DC INVERTER MULTI VRF CONTROL If incorrect or non-connection of communication module, centralized controller and communication line of indoor and outdoor units, the green indicator will be black all the time. It indicates connection problem between communication module and centralized controller that green indicator blinks once every 2s.In this case, COM2 must be used to connect them.
Page 88: Monitoring Software
DC INVERTER MULTI VRF CONTROL 7 MONITORING SOFTWARE 7.1 Function As the development and improvement of manufacturing technology and in order to solve the problems of complex distribution of the central AC in the buildings and difficult control and maintenance of them, an platform easy and reliable to operate must be provided to the users for daily management and maintenance.
Page 89: Wiring Diagram
DC INVERTER MULTI VRF CONTROL crystal head crystal head buckle is downwards 2. Wiring Diagram Description of above communication cables Cable Description crystal head and the other end is XH 4-core pin connector 2-core Type-V twisted pair wire both crystal head(Standard parts) crystal head and the other end connects of it connects with wiring terminal of converter.
Page 90: Hardware
DC INVERTER MULTI VRF CONTROL 7.3 Hardware 1. Introduction to Main Devices 1.1 R232-R485 Optoelectronic Isolated Converter (standard parts) 1 Function Introduction: R232-R485 optoelectronic Isolated converter is used to convert the signal 232 of PC COM and signal of bus 485.
Page 91 DC INVERTER MULTI VRF CONTROL 4 Installation Criteria: It must be installed indoors to avoid knock, insolation or rainwater and is better to be put in the monitoring room. This device must be the original one in the factory. Never self-buy the models for replacement.
Page 92 DC INVERTER MULTI VRF CONTROL 4 Installation Criteria: It must be installed indoors to avoid knock, insolation or rainwater and is better to be put in centralized control cabinet This device must be the original one in the factory. Never self-buy the models for replacement.
Page 93 DC INVERTER MULTI VRF CONTROL 3 Installation Dimension: Description Distance to top side mm Diameter mm Hanging Hole 4 Use Instruction to Communication Module The Sketch Map of COM, as shown below: Power Use Instruction Please check the user manual of communication module for details information.
Page 94 DC INVERTER MULTI VRF CONTROL 1.4 Centralized Control Cabinet (user provided parts) 1 Function Instruction: It can put the communication modules together for convenient centralized management and reliable operation. 2 Dimension: The following dimension is for reference. The cabinet is designed according to 10 communication modules into.
Page 95 DC INVERTER MULTI VRF CONTROL 1 Function Instruction: Common 3-way phone connector is applied to connect 3 pieces of communication cable. Dimension L mm W mm H mm Description 3-way connector 2 Installation Criteria: Avoid knock, insolation or rainwater. Ensure tightness of each bayonet without load.
Page 96 GREE COMMERCIAL AIR CONDITIONER DC INVERTER MULTI VRF INSTALLATION...
Page 97: Installation
DC INVERTER MULTI VRF INSTALLATION INSTALLATION 1 PRECAUTIONS FOR INSTALLATION 1.1 Precautions for installation Before installation, please ensure if the installing site, power ratings, possible operating range (pipe distance, height difference between indoor and outdoor unit, power voltage) and installing space are correct and suitable.
Page 98: Key Points Of Installation
DC INVERTER MULTI VRF INSTALLATION 1.2 Key Points of Installation Installation Procedures Description and Acceptance Criteria The materials specified on the engineering drawing shall be purchased as specified (e.g. copper tube, thermal insulation tube, PVC pipe, power cables, air switch, etc);...
Page 99 DC INVERTER MULTI VRF INSTALLATION system free of leakage. Add a dual-way filter on liquid pipe side. For multiple systems, please mark them properly. Carry out leakage detection under pressure after welding. Purge the system clean. Keep the pressure for 24 hours...
Page 100: Flow Chart Of Installation
DC INVERTER MULTI VRF INSTALLATION 2 FLOW CHART OF INSTALLATION Design Kicking-off Material selection Inspection of site installation position Installation of indoor unit Installation of Installation of outdoor unit connection pipes Welding Installation Connection Connection Installation Connection of of remote...
Page 101: Installation Of Outdoor Unit
DC INVERTER MULTI VRF INSTALLATION 3 INSTALLATION OF OUTDOOR UNIT 3.1 Cautions for installation of side discharge outdoor unit To ensure good operation of the air conditioner, the selection of installing position must be in accordance with the following principles: The outdoor unit shall be so installed that the air discharged out of the outdoor unit will not flow back and that enough space shall be maintained around the machine for repair.
Page 102: Dimensions Data
DC INVERTER MULTI VRF INSTALLATION 3.3 Dimensions Data Appearance of GMV(L)-Pd100W/NaB-K,GMV(L)- Pd 120W/NaB-K,GMV(L)- Pd 140W/NaB-K,GMV(L)- Pd 160W/NaB-K Unit:mm Model 1100 1250 GMV(L)- 100W/NaB-K 1100 1250 GMV(L)- 120W/NaB-K 1100 1250 GMV(L)- 140W/NaB-K 1100 1250 GMV(L)- 160W/NaB-K 3.4 Installation space requirements Clearance data of single unit - Installation space requirements...
Page 103 DC INVERTER MULTI VRF INSTALLATION Obstructions on air outlet side Unit: mm 300(150) or over Arranged on front and back 300(200) 1500 or over 1500 or over or over Arranged alongside left / right and front / back Unit: mm...
Page 104 DC INVERTER MULTI VRF INSTALLATION Arranged by layer on upper and lower Unit: mm 500 or above 500 or above Bench Bench...
Page 105: Installation Of Indoor Unit
Note The air conditioner unit installed in the following place may have malfunction, if it is unpreventable please contact the Nominated Repair Center Of Gree Electric Appliances, Inc. Of Zhuhai. the place with greasy all around;...
Page 106 DC INVERTER MULTI VRF INSTALLATION The following figure is applicable to the indoor units of GMV(L)-R22P/Na-K,GMV(L)-R25P/Na-K,GMV(L)-R28P/Na-K,GMV(L)-R36P/Na-K Electric box Nameplate Liquid pipe Gas pipe Rear air return vent Drainage pipe Lower air return The following figure is applicable to the indoor units of GMV(L)-R45P/Na-K, GMV(L)-R50P/Na-K,...
Page 107 DC INVERTER MULTI VRF INSTALLATION Model A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) G(mm) GMV L -R45P/ Na-K GMV L -R50P/ Na-K GMV L -R56P/ Na-K 1112 1070 1155 1008 GMV L -R63P/ Na-K 1112 1070 1155 1008 GMV L -R71P/ Na-K...
Page 108 DC INVERTER MULTI VRF INSTALLATION The following figure is applicable to the indoor units of -R22P/NaB-K -R28P/NaB-K GMV L -R36P/NaB-K GMV L -R22PS/NaB-K GMV L -R28PS/NaB-K GMV L -R36PS/NaB-K. Fig.1...
Page 109 DC INVERTER MULTI VRF INSTALLATION The following figure is applicable to the indoor units of GMV L -R45P/NaB-K GMV L -R56P/NaB-K GMV L -R71P/NaB-K GMV L -R90P/NaB-K GMV L -R112P/NaB-K GMV L -R140P/NaB-K GMV L -R45PS/NaB-K GMV L -R56PS/NaB-K GMV L -R71PS/NaB-K GMV L -R90PS/NaB-K GMV L -R112PS/NaB-K GMV L -R140PS/NaB-K.
Page 110 DC INVERTER MULTI VRF INSTALLATION 4.1.3 Installation space requirements Nut with washer Nut spring 4.1.4 Installation demonstration Selection of return air duct Supply air Supply air Wind supply Wind supply Return air Back wind Return air Back wind Install the return air pipe (a)
Page 111 DC INVERTER MULTI VRF INSTALLATION Installation of air supply duct Ceiling hoisting Return air Supply air Wind supply Back wind Return air Back wind Return air Ducted type Return air Name Hoisting Supply air bent Air outlet duct indoor unit inlet Note Fig.6 only shows the installation of back return air inlet.The bottom return air inlet can be...
Page 112: 4-Way Cassett Type Unit
DC INVERTER MULTI VRF INSTALLATION 4.2 4-way cassett type Unit 4.2.1 Selection of installation site Obstruct should put away from the inlet or outlet of the indoor unit so that the airflow can be blown though all the room. Make sure that the installation had accorded with the requirement of the schematic diagram of installation spaces.
Page 113 DC INVERTER MULTI VRF INSTALLATION 4.2.2 Dimensions Data GMV(L)-R140T/Na-K GMV(L)-R125T/Na-K,GMV(L)-R112T/Na-K,GMV(L)-R100T/Na-K,GMV(L)-R90T/Na-K,GMV(L)-R8 0T/Na-K,GMV(L)-R71T/Na-K,GMV(L)-R63T/Na-K,GMV(L)-R56T/Na-K ,GMV(L)-R50T/Na-K,GMV (L)-R45T/Na-K ,GMV(L)-R36T/Na-K,GMV(L)-R28T/Na-K Refrigerant pipe Hoisting screw Gaps between hoisting screw rods Indoor unit Ceiling opening Decorated surface boards Package Dimension Width (mm) Depth (mm) Height (mm) Model GMV(L)-R28T/Na-K...
Page 114 DC INVERTER MULTI VRF INSTALLATION 4.2.3 Installation space requirements W a ll s u rfa c e W a ll W a ll s u rfa c e s u rfa c M o d e l G M V (L )-R 2 8 T /N a -K...
Page 115 DC INVERTER MULTI VRF INSTALLATION Nut (supplied at scene) Gasket (attachment) Insert Hoisting stand Gasket anchor board Tighten (double nuts) (attachment) Fix the hoisting stand firmly Fix the gasket firmly Bolt of one of the angle of outlet pipe is fix...
Page 116 DC INVERTER MULTI VRF INSTALLATION Smear freeze motoroil here Median sponge (attachment) (entwine the wiring interface with seal mat) Torque wrench Heat preservation sheath of liquid inlet tube (attachment) (for liquid tube) Heat preservation Spanner sheath of gas collection tube (attachment)(for...
Page 117 DC INVERTER MULTI VRF INSTALLATION right angle with the unit, and distance to unit should not be beyond 300mm. Roof Hoisting stand Within 300mm below Drain hose Drain raising hose Clamp(attachment) Ceiling Instruction The slant gradient of the attached drainage...
Page 118: Floor Ceiling Type
DC INVERTER MULTI VRF INSTALLATION 4.3 Floor Ceiling Type 4.3.1 Selection of installation site Selection of Installation Location for Air Conditioner Unit The installation of air conditioner unit must be in accordance with national and local safety codes. Installation quality will directly affect the normal use of air conditioner unit. The user is prohibited from installation by himself.
Page 119 DC INVERTER MULTI VRF INSTALLATION 4.3.2 Dimensions Data Installation dimensions Outline dimensions Model GMVL-R28Zd/Na-K GMV-R28Zd/Na-K GMVL-R36Zd/Na-K GMV-R36Zd/Na-K GM(L-R50Zd/Na-K GMV-R50Zd/Na-K GMVL-R71Zd/Na-K 1220 1300 GMV-R71Zd/Na-K GMVL-R90Zd/Na-K 1500 1590 GMV-R90Zd/Na-K GMVL-R112Zd/Na-K 1500 1590 GMV-R112Zd/Na-K GMVL-R125Zd/Na-K 1500 1590 GMV-R125Zd/Na-K...
Page 120 DC INVERTER MULTI VRF INSTALLATION 4.3.3 Installation space requirements The space around the unit is adequate for ventilation (Refer to Fig.1) Fig.1 4.3.4 Installation demonstration There are 2 styles of installation Ceiling type Floor type Each type is similar to the other as follows: 1.
Page 121 DC INVERTER MULTI VRF INSTALLATION 3. Set the suspension bolt. (Use W3/8 or M10 size suspension bolts) Adjust the distance from the unit to the ceiling slab beforehand (Refer to Fig.4) 4. Fix the hanger bracket to the suspension bolt.
Page 122 DC INVERTER MULTI VRF INSTALLATION...
Page 123: Wall Mounted Type
DC INVERTER MULTI VRF INSTALLATION 4.4 Wall mounted type 4.4.1 Dimensions Data Remark :The appearance will be different according to the models. GMV(L)-R22G/NaB-K GMV(L)-R28G/NaB-K GMV(L)-R36G/NaB-K GMV(L)-R45G/NaB-K Model GMV(L)-R22G/NaC-K GMV(L)-R28G/NaC-K GMV(L)-R36G/NaC-K GMV(L)-R45G/NaC-K A(mm) B(mm) C(mm) Model GMV(L)-R50G/NaB-K GMV(L)-R56G/NaB-K A(mm) 1020 1020...
Page 124 DC INVERTER MULTI VRF INSTALLATION 4.4.2 Installation space requirements Schematic diagram of installation spaces ceiling ceiling wall unit:mm ground ground Important Notice: The unit must be installed by the professional personnel according to this install instruction to ensure the well use.
Page 125: 1-Way Cassett Type Unit
DC INVERTER MULTI VRF INSTALLATION 4.4.3 Installation demonstration Fig.1 1. Find the horizontal position by seton method; since the drainage hose is on the left side, adjust the rear panel to make its left side a little bit lower. 2. Fix the rear panel on the wall by bolt.
Page 126 DC INVERTER MULTI VRF INSTALLATION 4. The installation place should be horizontal. 5. Select the place, where coagulated water is easy to discharge and outside unit to be connected. 6. Above 18000mm between the earth and indoor unit should be ensured for maintenance and repair.
Page 127 DC INVERTER MULTI VRF INSTALLATION 4.5.4 Installation demonstration Fig 3 Hoisting the main body of the unit Hoisting the main body Attach the hoisting stand base to hoisting screw. In order to firm the hoisting stand base, use nuts with washers on either end of it.(refer to Fig. 1) Please refer to the dimension of ceiling opening on the cardboard for installation ●...
Page 128 DC INVERTER MULTI VRF INSTALLATION Drainage pipe 1. Installing drainage pipe The diameter of drainage pipe should be larger than that of connecting pipe. (Polythene pipe: dimension: outer diameter 25mm wall thickness≥1.5mm) ● Drainage pipe should be as short as possible and drooping gradient at least 1/100 to avoid the formation of air bubble.
Page 129 DC INVERTER MULTI VRF INSTALLATION Ceiling Note ● The gradient of the accessory drainage hose should be within 75mm so that the drainage faucet need not endure extra outside force. ● If several drainage hoses join together, please install them according to the following process.
Page 130: Cassette Type Indoor Unit
DC INVERTER MULTI VRF INSTALLATION 2. AS shown in Fig.4, install the panel body, and then tighten the screws according to the sequences in the figures. 3 .As shown in Fig.5, install the panel on the panel ,and then turn it for fastening 4.6 cassette type indoor unit...
Page 131: Important Notice
DC INVERTER MULTI VRF INSTALLATION 6. Make sure that there are enough space for care and maintenance. Make sure that the weight between the indoor unit and ground is above 1800mm. 7. When installing the steeve bolt, check if the install place can stand the weight 4 times of the unit’s. If not, reinforce before installation.
Page 132 DC INVERTER MULTI VRF INSTALLATION Install dimension of mode GMV L -R45T/ NaA-K GMV L -R36T/ NaA-K GMV L -R28T/ NaA-K GMV L -R22T/ NaA-K The drilling of holes in the ceiling must be done by the professional personnel. Installation stands for m ain body of the unit...
Page 133 DC INVERTER MULTI VRF INSTALLATION When attach the hoisting stand on hoisting screw, do use nut and gasket individually at the upper and lower of the hoisting stand to fix it. The use of gasket anchor board can prevent gasket break off.
Page 134 DC INVERTER MULTI VRF INSTALLATION wrench. as shown in fig.3. When connect, smear both inside and outside of the flare nut with freeze motor oil, screw it by hand and then tighten it with spanner. Refer to form 1 to check if the wrench had been tightened (too tight would mangle the nut and lead leakage).
Page 135 DC INVERTER MULTI VRF INSTALLATION The diameter of the drain hose should be equal or bigger than the connection pipe’s. ( The diameter of polythene pipe: Outer diameter 25mm Surface thickness 1.5mm) Drain hose should be short and drooping gradient should at less 1/100 to prevent the formation of air bubble.
Page 136: Electrical Wiring
DC INVERTER MULTI VRF INSTALLATION Please install the drain hose according to the following process if several drain hoses join together. D ra in h o s e (a tta c h m e n t) T-tie in join drain hose The specs of the selected join drain hose should fits the running capacity of the unit.
Page 137 DC INVERTER MULTI VRF INSTALLATION Function of it is as follow: Dial switch Function Dial ON Dial OFF Silk screen Selection of memory mode: Standby A Selection between reset mode and standby mode after Reset after 1 S / R...
Page 138 DC INVERTER MULTI VRF INSTALLATION 2. Install the panel Screw the 4 hexagon head screws under the latches in about 15mm. (The panel would rise) Adjust the panel by turning it toward the direction pointed by the arrow as shown in fig.4, so that the adjust board connect the ceiling well.
Page 139 DC INVERTER MULTI VRF INSTALLATION Air leak Air leak from ceiling Water condensatation, water drop Fig.5 2. If gap still exist between ceiling and decoration panel after tightening the screws, readjust the height of the indoor unit. (As shown in fig.6)
Page 140 DC INVERTER MULTI VRF INSTALLATION Drainage equipment (inside type) Discharge condensate water from indoor unit when cooling Drainage hose Guide louver (placed in air outlet vent) Air outlet vent Connecting pipe Air filter, purifier (in air inlet grille) Air inlet grille Fig.8...
Page 141: Installation Requirements Of Refrigerant Piping
DC INVERTER MULTI VRF INSTALLATION 5 INSTALLATION REQUIREMENTS OF REFRIGERANT PIPING 5.1 Specification of refrigerant pipe R410a refrigerant system External External Thickness(mm) Thickness(mm) Diameter(mm/inch) Diameter(mm/inch) φ6.35 ≥0.8 φ22.2 ≥1.5 φ9.52 ≥0.8 φ25.4 ≥1.5 φ12.7 ≥1 φ28.6 ≥1.5 φ15.9 ≥1 φ34.9 ≥1.5...
Page 142 DC INVERTER MULTI VRF INSTALLATION 140<C≤180 φ19.05 φ9.52 5.3.3 The size of the pipe (indoor pipe) between manifold and indoor unit is same as the size of indoor pipe (See Table below) (If the distance from the first branch to one indoor unit is over 30m,...
Page 143: Installation Of Refrigerant Piping
DC INVERTER MULTI VRF INSTALLATION 6 INSTALLATION OF REFRIGERANT PIPING 6.1 Flow Chart of Installation Installation of indoor unit Fabrication according to piping design dimension Installation of connection pipes Expel with nitrogen Welding Purge Airtight test Vacuuming and drying 6.2 Three Principles of Refrigerant Piping Installation...
Page 144: Installation Of Metal Embedded Pipe
DC INVERTER MULTI VRF INSTALLATION 6.3 Installation of Metal Embedded Pipe Work Order Metal Embedding Installation of Metal Plotting Diagram Embedded Parts Plot the line on ground if possible and use laser to project it onto the roof. This is quick and correct.
Page 145: Management And Machining Of Refrigerant Piping
DC INVERTER MULTI VRF INSTALLATION 6.5 Management and Machining of Refrigerant Piping 1 Storage After receiving the refrigerant pipe and other components, do not move them to the storage until confirming that they have no deformation, bend, crack or damage.
Page 146 DC INVERTER MULTI VRF INSTALLATION 4 Cut·Chamfer Cut vertically to axis direction by using special pipe cutter that is suitable to the dimension of copper pipe (big, medium, small). During operation, press and rotate the pipe cutter slowly and cut off the copper pipe without causing any deformation.
Page 147 DC INVERTER MULTI VRF INSTALLATION Too much eliminated The contact face becomes small Flared nut 5 Pipe bending Work Methods: Bend by hand ………………………..Suitable to fine copper pipe (φ6.35mm-φ12.7mm). Machining with spring pipe bender …….. Bend by inserting the spring into copper pipe or sheathing onto the copper pipe (φ6.35mm-φ22.2mm).
Page 148 DC INVERTER MULTI VRF INSTALLATION Steel pipe Jacketed bender Inner side wrinkled and deformed Bent, with fissure occurring on this side Section The copper pipe might be deformed even if it is not bent Correct section Bend section 6 Flaring The flaring refers to expansion of pipe opening.
Page 149: Installation Of Refrigerant Piping
DC INVERTER MULTI VRF INSTALLATION 6.6 Installation of Refrigerant Piping 1 Precautions on piping works At the site of transport, storage and construction, the two ends of copper pipes shall be sealed with plastic sealing caps. Before welding, copper pipes must be cleaned (washing the inner side of pipe with alcohol) to ensure no dust and no water in pipeline.
Page 150 DC INVERTER MULTI VRF INSTALLATION Installation specifications for branch pipe Placement of branch pipe The branch pipe can only placed horizontally. Meanwhile, two branch pipes must be on the same plane. The spacing between two branch pipes must be over 800mm, the spacing between two bends must be over 800mm, and the spacing between branch pipe and bend point must also be over 800mm.
Page 151: Welding Of Copper Pipe
DC INVERTER MULTI VRF INSTALLATION Branch pipe Copper pipe Correct connection Wrong connection Copper pipe shall not be inserted too much for connection with branch pipe: Copper pipe Branch pipe Correct connection Wrong connection 6.7 Welding of Copper Pipe 1 Braze welding Materials for braze welding There are two kinds of braze welding, soft braze welding and hard braze welding.
Page 152 DC INVERTER MULTI VRF INSTALLATION h. Instructions on how to use electric machinery properly shall be available. i. Locations marked with “Staff Only” shall be indicated. j. An application is necessary for use of open flame and shall be reviewed by on-site safety officer for approval.
Page 153 DC INVERTER MULTI VRF INSTALLATION 4 Operation order Basic procedures for welding: Assemble copper pipes Cleaning Check whether clearance is proper. Fill nitrogen N2 Nitrogen pressure 0.05-0.3Mpa 0.5 0.1kgf/cm Welding flux Welding heating Acknowledge welding flux Add welding flux Cooling, continue to fill nitrogen...
Page 154 DC INVERTER MULTI VRF INSTALLATION After assembling, nitrogen begins to charge until welding is finished and will continue over 10s during cooling after welding. Main points of nitrogen charge See the drawing below When nitrogen is charged, the press switch on th e quick connector and inflator shall be closed to let nitrogen totally filled in the pipe.
Page 155 DC INVERTER MULTI VRF INSTALLATION Welding seam should have smooth surface. Fiilet should be even and full with natural arc transition. Braze welding connector should be free from defects such as over-burning, welding blockage, crack, rough surface of welding seam and burning through. Welding seam should be free from defects such as pore, slag inclusion, underfill, rosin joint and overlap.
Page 156: Cleaning Of Refrigerant Piping
DC INVERTER MULTI VRF INSTALLATION Solder Solder Weld torch Weld torch Solder Transverse Weld torch Upward Downward Cooling To avoid getting a burn in following processes, common wet cloth (humidity content is low, meaning that there shall not be water drips when welded part is cooled; and because shrinkage factor of copper is different from that of welding material, too quick cooling that would cause cracking of braze welding shall be avoided) can be used for cooling welded parts.
Page 157 DC INVERTER MULTI VRF INSTALLATION 2 Cleaning steps a. Mount a pressure gauge on nitrogen cylinder; Nitrogen bottle Indoor unit A outdoor unit B Liquid pipe Outdoor side The opening of the pipe not to be purged Air pipe shall be blocked with blind plug.
Page 158: Pressure Maintaining And Leak Hunting
DC INVERTER MULTI VRF INSTALLATION 6.9 Pressure Maintaining and Leak Hunting 1 Pressure maintaining of refrigerant piping After refrigerant piping of a system is welded A refrigerant filling nozzle shall be welded respectively on the big pipe and on the small pipe on the outdoor unit side.
Page 159: Heat Preservation Of Refrigerant Piping
DC INVERTER MULTI VRF INSTALLATION Steps: Nitrogen is charged to reach 4.15MPa and remains at the pressure for 24h (nitrogen shall be filled from refrigerant filling nozzles at the big valve as well as the small valve using a pressure gauge;...
Page 160: Vacuum Pumping
DC INVERTER MULTI VRF INSTALLATION unit, it is required to withstand a temperature not lower than 70 on liquid pipe side and not lower than 120 on gas pipe side. For cooling-only unit, it is required to withstand a temperature not lower than 70 on both liquid pipe side and gas pipe side.
Page 161: Refrigerant Charge
DC INVERTER MULTI VRF INSTALLATION Pressure gauge connector valve Connector on gas side Vacuum pump Connector on liquid side Start the vacuum pump and turn on “L ” and “H ” knobs b. Continue for 0.5~1.0 hour after the vacuum level reaches -0.1MPa (gauge pressure -1kgf/cm Then, close the “VH”...
Page 162 DC INVERTER MULTI VRF INSTALLATION Pressure gauge connector valve Connector on gas side Gas liquid Refrigerant cylinder Connector on liquid side Spring balance b. Open pressure gauge valve V , then fill liquid state refrigerant into the liquid pipe side until required amount is reached.
Page 163: Installation Of Electronic Expansion Valve Assy
DC INVERTER MULTI VRF INSTALLATION 7 INSTALLATION OF ELECTRONIC EXPANSION VALVE ASSY 7.1 Direction Requirements To ensure normal operation of the unit, please connect the electronic expansion valve sub-assembly as shown below. Ensure that the vertical arrow labeled on electronic expansion valve sub-assembly is pointed upward.
Page 164 DC INVERTER MULTI VRF INSTALLATION WARNING: The length of connection pipe must be 1m≤L≤1. 5m. The electronic expansion valve sub-assembly must be connected to the indoor and outdoor unit in a direction as marked. If connected in reverse direction, severe error will be caused to the unit.
Page 165: Installation Of Condensate Pipe
DC INVERTER MULTI VRF INSTALLATION 8 INSTALLATION OF CONDENSATE PIPE 8.1 Material quality requirements Generally, the condensate pipe shall be water supply U-PVC pipe, adhered by using special glue. The other materials available include: PP-R pipe, PP-C pipe and hot-dipped galvanized steel pipe.
Page 166 DC INVERTER MULTI VRF INSTALLATION Indoor Unit Mounting of horizontal pipe Main pipe Main pipe Main pipe 7 Do not tie the condensate pipe and refrigerant pipe together. 8) To ensure smooth drainage of condensate, a vent hole shall be set at the highest point of drainage hose 9) Carry out water flow test and full water test after the pipe connection is completed.
Page 167 DC INVERTER MULTI VRF INSTALLATION The auxiliary drainage hose must be thermally insulated Thermal insulation of condensate pipe Pipe cover 15) The long drainage hose may be fixed by using hanger bolts, thus to ensure a gradient of 1/100 (PVC cannot be bent).
Page 168 DC INVERTER MULTI VRF INSTALLATION Joint Indoor unit. Indoor unit. Joint 17) Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main pipe The horizontal pipe cannot be connected to the vertical pipe at a same height. It can be...
Page 169: Installation Of Drainage Hose For Different Types Of Indoor Unit
DC INVERTER MULTI VRF INSTALLATION 18). All the condensate pipes must be installed at a distance over 500mm from the electric box of the unit. 8.3 Installation of drainage hose for different types of indoor unit 1) Duct-type Indoor Unit (Including General Static Pressure and Low Static Pressure) a.
Page 170 DC INVERTER MULTI VRF INSTALLATION Thermal insulation of condensate pipe Pipe cover Thickness of Thermal Insulation Materials Drainage hose (mm)( Outer Dia) (mm) Φ17 ≥15 Φ27 ≥20 ≥34.9 ≥20 Notes: E. The inclination of drainage hose shall be within 75mm, so that the drainage insert will not bear excessive force.
Page 171 DC INVERTER MULTI VRF INSTALLATION Roof Hanger seat Within 300mm Below 280mm Drainage hose (accessory) Drainage rise pipe Clamp (accessory) Ceiling The inclination of included drainage hose shall be within 75mm, so that the drainage insert will not bear excessive force.
Page 172 DC INVERTER MULTI VRF INSTALLATION Introduce water here for water test Over 100mm T-joint collecting drainage pipe Fig. The specification of collecting drainage hose shall be suitable to the working capacity of the unit We may collect the drainage hoses of all the indoor units in one system (An outdoor unit and all the indoor units connected to this outdoor unit are called one system), or collect the drainage hoses of all the indoor units in several systems.
Page 173: Test For Condensate Pipe
DC INVERTER MULTI VRF INSTALLATION The extended section of drainage hose shall be wrapped with thermal insulation sheath when passing the room. Thermal insulation of condensate pipe Pipe cover Fig.3.41 After installation of the drainage hose, be sure to make water test and check if the water can be drained smoothly.
Page 174: Requirements Of Heat Insulation
DC INVERTER MULTI VRF INSTALLATION 8.5 Requirements of Heat Insulation Heat Insulation Materials The thermal insulation material of obturator foam shall be used. Fireproof level: B1. The thermal conductivity shall not be higher than 0.035w/ (m·k) when the average temperature is 0 .
Page 175: Electrical Installation
DC INVERTER MULTI VRF INSTALLATION 9 ELECTRICAL INSTALLATION 9.1 Precautions for Electrical Installation Carry out installation according to national cabling rules. Rated supply voltage and special circuit for air conditioner must be used. Do not pull the power cables with force.
Page 176: Dial-Up
DC INVERTER MULTI VRF INSTALLATION Connection Schematics for Indoor / Outdoor Power Cords and Communication Line 9.4 Dial-up Gree DC Multi VRF unit is provided with three dial-up, i.e. function dial-up, address dial-up and capacity dial-up. ou may adjust the function dial-up to set the control, mode and functions of the unit;...
Page 177 DC INVERTER MULTI VRF INSTALLATION the mode of slave indoor unit that is firstly started. If the mode of slave indoor unit started later has in conflict against the mode started earlier, the system will display mode conflict error, so that the indoor unit started later cannot work. In this case, the run mode of the unit is decided by the slave indoor unit that is firstly started.
Page 178 DC INVERTER MULTI VRF INSTALLATION Capacity code S2 Mainboard of 5-bit Function Dial-up Mainboard of 4-bit Function Dial-up 9.4.2 Address dial code Address dial-up must be set for the multi indoor units; otherwise abnormal communication will be caused to the unit. The address code has 4-bit dial-up in total. The highest address is 16 and the lowest address is 1.
Page 179 DC INVERTER MULTI VRF INSTALLATION controller) Below is factory default setting: The default setting of address dial-up code is 0000 and the address is 1 (See above for the position of dial lever). Dial-up Value The dial-up value of address code is set in binary system. The dial-up value is “0” when the lever is dialed to “ON”...
Page 180 DC INVERTER MULTI VRF INSTALLATION Below is factory default setting: The default Capacity dial-up is the maximum capacity of indoor unit. As shown above, the capacity is (See above for the lever position) Dial-up Value The dial-up value of capacity code is set in binary system. The dial-up value is “0” when the lever is dialed to “ON”...
Page 181 DC INVERTER MULTI VRF MAINTENANCE MAINTENANCE...
Page 182: Maintenance
DC INVERTER MULTI VRF MAINTENANCE MAINTENANCE 1 List of Unit Errors List of Error Display on Wired Controller Error Error Source of Notes on Control Code Description Error Signal The high pressure protection value is 4.2MPa. When it is detected...
Page 183 DC INVERTER MULTI VRF MAINTENANCE Test for 30 seconds successively to check if the temperature sensor is disconnected. If yes, alarm will be sent; otherwise no processing will be made. If the controller of outdoor unit detects failure of outdoor sensor under open circuit, short circuit and...
Page 184 DC INVERTER MULTI VRF MAINTENANCE Feng Yun and Feng Xia series Comm Tube-inle Tube-midd Tube-exit Room Mode Outdo Antifr unicati Error t sensor le sensor sensor sensor confli or unit rost eeze error error error error failure error Blink Test...
Page 185: Display Code On Digital Tube Of Outdoor Mainboard
DC INVERTER MULTI VRF MAINTENANCE Display Code on Digital Tube of Outdoor Mainboard Display Display Display on Display on Error Indoor Error Indoor Digital Digital Unit Unit Tube Tube DC overvoltage Input overcurrent protection protection Module overheat Jumper fault No display...
Page 186: Flow Chart Of Troubleshooting
DC INVERTER MULTI VRF MAINTENANCE 2 Flow chart of troubleshooting 2.1 High-pressure protection High-pressure protection Measure if the pressure switch is Use pressure gauge to Replace the mainboard of outdoor unit normal measure if the pressure is really high? Check if the operation...
Page 187 DC INVERTER MULTI VRF MAINTENANCE ow-pressure protection 2.2 L Low-pressure protection Use pressure gauge to Refer to low pressure sensor error measure if the pressure is really low? Add refrigerant according to the nominal refrigerant volume Check if the refrigerant in...
Page 188 DC INVERTER MULTI VRF MAINTENANCE xhaust Temperature Protection 2.3 E Exhaust Temperature Protection Measure if the Measure if the exhaust resistance of temperature of compressor temperature sensor reaches 118 is correct? When the exhaust temperature of compressor is Replace the mainboard of...
Page 189 DC INVERTER MULTI VRF MAINTENANCE 2.4 Compressor overcurrent protection Abnormal overcurrent error If the compressor Adjust the compressor wiring wiring is correct If the current value is Replace the overcurrent protector higher than the preset value of protector If the high voltage...
Page 190 DC INVERTER MULTI VRF MAINTENANCE Overcurrent occurs in operation, i.e. the indicator will display the current protection just after startup. Check the indoor units for matching Within 135% Correct the match of indoor units to allowable capacity Check if the charge volume is...
Page 191 DC INVERTER MULTI VRF MAINTENANCE Communication error Communication error Check if the Check the orientation of plug and socket communication line of indoor unit is connected Measure if the Replace the communication line communication line is through? Check if the communication...
Page 192 DC INVERTER MULTI VRF MAINTENANCE ater-full protection Fault display If the voltage of liquid Check if the water Replace the mainboard of indoor unit level switch terminal overflows? is correct? Check the liquid level switch If the voltage of If the drainage pump is...
Page 193 DC INVERTER MULTI VRF MAINTENANCE 2.8 No energization to the unit and mainboard No energization to the unit and mainboard Check the power supply of If the voltage of L & N on terminal board for any fault terminal board inside the unit...
Page 194 DC INVERTER MULTI VRF MAINTENANCE The IPM module integrates 3 pairs of complementary IGBT tube controls their connection and disconnection via PWM wave, so that the DC voltage applied different stator windings of the module compressor in different time section and the current is hence generated stator.
Page 195: Wiring Diadram
DC INVERTER MULTI VRF MAINTENANCE 3 WIRING DIADRAM 3.1 Outdoor unit GMV(L)-Pd100W/NaB-K,GMV(L)-Pd120W/NaB-K,GMV(L)-Pd140W/NaB-K GMV(L)-Pd160W/NaB-K...
Page 196: Indoor Unit
DC INVERTER MULTI VRF MAINTENANCE 3.2 Indoor unit GMV-R22P/Na-K,GMV-R25P/Na-K,GMV-R28P/Na-K,GMV-R36P/Na-K,GMVL-R22P/Na-K ,GMVL-R25P/Na-K,GMVL -R28P/Na-K,GMVL-R36P/Na-K GMV-R45P/Na-K ,GMV-R50P/Na-K,GMVL-R45P/Na-K GMVL-R50P/Na-K,...
Page 197 DC INVERTER MULTI VRF MAINTENANCE GMV-R56P/Na-K,GMV-R71P/Na-K,GMV-R80P/Na-K,GMVL-R56P/Na-K,GMVL-R71P/Na-K,GMVL-R80P/Na-K GMV-R90P/Na-K,GMV-R112P/Na-K,GMV-R140P/Na-K,GMVL-R90P/Na-K,GMVL-R112P/Na-K,GMVL-R140P/Na-K...
Page 198 DC INVERTER MULTI VRF MAINTENANCE GMV-R125P/Na-K,GMVL-R125P/Na-K GMV-R22P/NaB-K GMV-R28P/NaB-K GMV-R36P/NaB-K GMV-R45P/NaB-K GMV-R56P/NaB-K GMV-R71P/NaB-K...
Page 199 DC INVERTER MULTI VRF MAINTENANCE GMV-R90P/NaB-K GMV-R112P/NaB-K GMV-R140P/NaB-K GMV-R22PS/NaB-K GMV-R28PS/NaB-K GMV-R36PS/NaB-K...
Page 200 DC INVERTER MULTI VRF MAINTENANCE GMV-R45PS/NaB-K GMV-R56PS/NaB-K GMV-R71PS/NaB-K GMV-R90PS/NaB-K GMV-R112PS/NaB-K GMV-R140PS/NaB-K...
Page 201 DC INVERTER MULTI VRF MAINTENANCE GMV-R22T/NaA-K GMV-R28T/NaA-K GMV-R36T/NaA-K GMV-R45T/NaA-K GMV-R28T/Na-K,GMV-R36T/Na-K,GMV-R45T/Na-K,GMV-R50T/Na-K,GMV-R56T/Na-K,GMV-R71T/Na-K,GMV-R8 0T/Na-K,GMV-R90T/Na-K,GMV-R112T/Na-K,GMV-R125T/Na-K,GMV-R140T/Na-K,GMVL-R28T/Na-K,GMVL-R36T/ Na-K,GMVL-R45T/Na-K,GMVL-R50T/Na-K,GMVL-R56T/Na-K,GMVL-R71T/Na-K,GMVL-R80T/Na-K,GMVL-R90T/ Na-K,GMVL-R112T/Na-K,GMVL-R125T/Na-K,GMVL-R140T/Na-K Swing Motor Water Level Switch Environment Temp.sensor Temp.sensor Temp.sensor Manual Panel Temp.sensor GMV-R22G/NaB-K,GMVL-R22G/NaB-K,GMV-R28G/NaB-K,GMVL-R28G/NaB-K,GMV-R36G/NaB-K,GMVL-R36G/N aB-K,GMV-R45G/NaB-K,GMVL-R45G/NaB-K...
Page 202 DC INVERTER MULTI VRF MAINTENANCE GMV-R50G/NaB-K,GMV-R56G/NaB-K,GMVL-R50G/NaB-K,GMVL-R56G/NaB-K GMV-R22G/NaC-K,GMV-R28G/NaC-K ,GMV-R36G/NaC-K,GMV-R45G/NaC-K,GMVL-R22G/NaC-K,GMVL-R28G/Na C-K ,GMVL-R36G/NaC-K,GMVL-R45G/NaC-K...
Page 203 DC INVERTER MULTI VRF MAINTENANCE GMV-R71G/Na-K,GMV-R80G/Na-K,GMVL-R71G/Na-K,GMVL-R80G/Na-K...
Page 204 DC INVERTER MULTI VRF MAINTENANCE GMV-R28Zd/Na-K,GMV-R36Zd/Na-K,GMV-R50Zd/Na-K,GMV-R71Zd/Na-K,GMV-R90Zd/Na-K,GMV-R112Zd/Na-K,G MV-R125Zd/Na-K,GMVL-R28Zd/Na-K,GMVL-R36Zd/Na-K,GMVL-R50Zd/Na-K,GMVL-R71Zd/Na-K,GMVL-R90Zd/N a-K,GMVL-R112Zd/Na-K,GMVL-R125Zd/Na-K GMV-R22Td/Na-K,GMV-R28Td/Na-K,GMV-R36Td/Na-K...
Page 205: Disassembly And Assembly Procedure Of Main Parts
DC INVERTER MULTI VRF MAINTENANCE 4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 4.1 Removal and Assembly of Outdoor Unit Outdoor Unit of Side Outlet Structure Removal and Installation of Compressor Remark: Before removing the compressor, make sure that there is no refrigerant inside the pipe system and that the power has been cut off.
Page 206 DC INVERTER MULTI VRF MAINTENANCE Replace the compressor compressor and tighten the nuts fixing chassis onto the base seat. Use spanner to remove bolts fixing the compressor. Connect Weld the connection pipe suction of compressor and connect it exhaust pipe...
Page 207 DC INVERTER MULTI VRF MAINTENANCE Disassembly and Assembly of 4-way valve Step Illustration Handling Instruction 1. Disconnect the Firstly, remove the coil of 4-way 4-way valve from valve. liquid bypass. Loosen liquid bypass Loosen four sub-assembly by welding; then, pull out points by welding the connection pipe.
Page 208 DC INVERTER MULTI VRF MAINTENANCE Removal and Installation of electronic expansion valve Step Illustration Handling Instruction Disconnect Remove coil electronic expansion valve electronic expansion valve; from connection pipe Loosen the connection pipe of electronic expansion valve by welding; then pull out the connection pipe.
Page 209 DC INVERTER MULTI VRF MAINTENANCE Removal and Installation of Oil Separator Step Illustration Handling Instruction Disconnect Loosen the three joints on oil separator from separator sub-assembly connection pipe welding; then, pull out the connection pipe. Note: During welding, take care not to let the flame burn other elements.
Page 210 DC INVERTER MULTI VRF MAINTENANCE Removal and Installation of Gas-Liquid Separator Step Illustration Handling Instruction Removal Loosen the two joints on Installation of Gas-Liquid gas-liquid separator by welding; Separator then, pull out the connection pipe. Note: During welding, take care not to let the flame burn other elements.
Page 211 DC INVERTER MULTI VRF MAINTENANCE Removal and Installation of Liquid Tank Step Illustration Handling Instruction 1. Disconnect the liquid tank Disconnect the liquid from connection pip tank from connection pip Note: During welding, take care not to let the flame burn other elements.
Page 212: Removal And Assembly Of Indoor Unit
DC INVERTER MULTI VRF MAINTENANCE Removal and Assembly of Indoor Unit Cassette-type Unit Removal and Assembly of Fan Motor Step Illustration Handling Instruction 1. Loosen the screws fixing Use screwdriver to loosen the water tray the screws fixing the water tray 2.
Page 213 DC INVERTER MULTI VRF MAINTENANCE 6. Remove the motor and Remove the motor and replace it replace it 7. Tighten the screws fixing Use screwdriver to tighten the motor the screws fixing the motor. 8. Mount the fan and tighten...
Page 214 DC INVERTER MULTI VRF MAINTENANCE Removal and Installation of Drainage Pump Step Illustration Handling Instruction 1. Loosen the screws fixing Use screwdriver to the water tray loosen the screws fixing the water tray 2. Remove the water tray Remove the water pump and replace it.
Page 215 DC INVERTER MULTI VRF MAINTENANCE 1-way Cassette-type Unit Removal and Assembly of Fan Motor Step Illustration Handling Instruction ●Press switch 1 Remove the both side front panel panle. Open one side of the panel and remove three opposite buckles. Remove front panel.
Page 216 DC INVERTER MULTI VRF MAINTENANCE ●Loosen the fixing Loosen the screw of motor cover fixing screw of with screwdriver motor cover Remove ●Remove motor motor cover cover subassembly subassembly 8. Loosen the Rotate the cross flow screw fixing blade to make the...
Page 217 DC INVERTER MULTI VRF MAINTENANCE 11 Mount water ●Mount water tray tray and filter filter support. support. Fix the tighten screw screw. fixing water tray and filter support. Mount ●Mount panel panel subassembly subassembly tighten the screw. and tighten the screw.
Page 218 DC INVERTER MULTI VRF MAINTENANCE Removal and Assembly of Water Pump Step Illustration Handling Instruction ●Press switch on Remove the both side of the panel panle. Open one subassembly side of the panel remove three opposite buckles. Remove the front panel.
Page 219 DC INVERTER MULTI VRF MAINTENANCE ●Loosen the fixing Loosen the screw water fixing screw of pump with water pump screwdriver. Pull off the drain pipe from water pump. 7. Replace the ●Remove water pump water pump and mount a new one.
Page 220 DC INVERTER MULTI VRF MAINTENANCE Mount ●Mount panel panel subassembly subassembly press the switch on both side of the panel.
Page 221 DC INVERTER MULTI VRF MAINTENANCE Ultra-thin Duct-Type Unit Removal and Assembly of Fan Motor Remarks: Before removing the fan, make sure to cut off the power firstly. Step Illustration Handling Instruction Unplug ● Cut off the power supply motor cables indoor unit.
Page 222 DC INVERTER MULTI VRF MAINTENANCE Duct-Type Unit Removal and Assembly of Fan Motor Remarks: Before removing the fan, make sure to cut off the power firstly. Step Illustration Handling Instruction 1. Unplug the motor ● Cut power cables supply of indoor unit.
Page 223 DC INVERTER MULTI VRF MAINTENANCE 7. Replace with a new ● Assemble the unit in motor reverse disassembly procedures energize testing.
Page 224 DC INVERTER MULTI VRF MAINTENANCE Duct-Type Unit 5.6 kW 8.0 kW Removal and Assembly of Fan Motor Remarks: Before removing the fan, make sure to cut off the power firstly. Step Illustration Handling Instruction 1. Unplug the motor ●Cut off the power cables supply of indoor unit.
Page 225 DC INVERTER MULTI VRF MAINTENANCE 6. Replace the motor ●Firstly, disengage the motor from motor support. Then, sequentially disengage sub-assembly form the motor shaft. Remove the motor from the return air inlet and replace with motor. In which, for the...
Page 226 DC INVERTER MULTI VRF MAINTENANCE Duct-Type Unit 9.0 kW 14 kW Removal and Assembly of Fan Motor Remarks: Before removing the fan, make sure to cut off the power firstly. Step Illustration Handling Instruction Unplug ●Cut power motor cables supply of indoor unit.
Page 227 DC INVERTER MULTI VRF MAINTENANCE 7. Assemble the ●Assemble the unit in unit in reverse to reverse disassembly disassembly procedures procedures energize testing.
Page 228 DC INVERTER MULTI VRF MAINTENANCE Wall-mounted Unit Removal and Wall-mounted Unit Assembly of Fan Motor Remarks: Before removing the compressor, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. Step...
Page 229 DC INVERTER MULTI VRF MAINTENANCE PFC protection E5 displayed on hand controller Mainboard nixietube Monitor display PFC abnorma Display Hc Cut off the power for 1 minute reduce busbar voltage to 36V or lower. Then, check the mainboard. If it is moistened,...
Page 230 DC INVERTER MULTI VRF MAINTENANCE protection 2.10 IPM E5 displayed on hand controller Mainboard nixietube Monitor display Display Hc IPM protection Cut off the power for 1 minute or reduce the busbar voltage to 36V or lower. Then, Check Mainboard.
Page 231 DC INVERTER MULTI VRF MAINTENANCE 2.11 Tripping Tripping Check if it is leakage and switch changed, If the switching capacity can meet the requirements? Tripped once energized case system Please mount leakage flow is electric switches abnormal. Please Check if the...
Page 232 DC INVERTER MULTI VRF MAINTENANCE Radiator overheat protection 2.12 E5 displayed on hand controller Mainboard nixietube Monitor display Radiator Display Hc overheat protection If the air outlet and air If the outdoor intake of the outdoor unit unit is short circuited, it will...
Page 233 DC INVERTER MULTI VRF MAINTENANCE 2.13 Overvoltage protection of DC voltage E5 displayed on hand controller Mainboard nixietube Monitor display Overvoltage protection of Display Hc DC voltage input power voltage within 185V-264V? If it happens during the compressor operating? If it happens during the...
Page 234 DC INVERTER MULTI VRF MAINTENANCE 3 Power Distribution 3.1 Principle of Power Distribution Control signals for temperature sensor, electronic expansion valve and HV/LV Air switch switch Indoor Filter Mainboard unit board Control signals for 4-way valve, air bypass and electric heater...
Page 235: Exploded Views And Part List
DC INVERTER MULTI VRF MAINTENANCE 5 EXPLODED VIEWS AND PART LIST 5.1 Exploded Views and Parts List of Outdoor Unit GMV(L)-Pd100W/NaB-K,GMV(L)-Pd120W/NaB-K,GMV(L)-Pd140W/NaB-K,GMV(L)-Pd160W/NaB-K...
Page 236 DC INVERTER MULTI VRF MAINTENANCE Part Name Code Qty. Front Plate 01435436 01475432 Rear Grill Top Cover 01255262 01124159 Condenser Assy 01124158 01424235 Electric Box Cover 01244132 Clapboard 01844135 Retaining Plate 01394528 01394799 Electric Box Assy 01394802 01394797 30226217 Main Board...
Page 237 DC INVERTER MULTI VRF MAINTENANCE 15704113 Capacitor BOX 01424173 22414102 Panel Grille 4-wayValveSub-Assy 04144169 43000338 4-Way Valve 4-way Valve Fittings 4300040029 07228767 Gas-liquid Separator Support 01804201 Wiring 40110142 Connection Wire 4003014301 4300010822 Magnet Coil for Electronic Expansion Valve Note: 1. Condenser Assy is only applicable toGMV(L)-Pd100W/NaB-K,GMV(L)-Pd120W/NaB-K 2.
Page 238: Exploded Views And Parts List Of Indoor Unit
DC INVERTER MULTI VRF MAINTENANCE 5.2 Exploded Views and Parts List of Indoor Unit 5.2 .1...
Page 239 DC INVERTER MULTI VRF MAINTENANCE Tube Exit Plate Body Fixed Plate Front Side Plate Left Side Plate Base Plate Rear Side Plate Bottom Foam Motor Gasket Bolt Motor Fixer Fan Motor Centrifugal Fan Evaporator Connection Cable-cross Loop shunt Water Tray...
Page 240 DC INVERTER MULTI VRF MAINTENANCE Tube Exit Plate Body Fixed Plate Front Side Plate Left Side Plate Base Plate Rear Side Plate Bottom Foam Motor Gasket Bolt Motor Fixer Fan Motor Centrifugal Fan Evaporator Connection Cable-cross Loop shunt Water Tray...
Page 241 DC INVERTER MULTI VRF MAINTENANCE Tube Exit Plate Body Fixed Plate Front Side Plate Left Side Plate Base Plate Rear Side Plate Bottom Foam Motor Gasket Bolt Motor Fixer Fan Motor Centrifugal Fan Evaporator Connection Cable-cross Loop shunt Water Tray...
Page 242 DC INVERTER MULTI VRF MAINTENANCE...
Page 243 DC INVERTER MULTI VRF MAINTENANCE Tube Exit Plate Body Fixed Plate Front Side Plate Left Side Plate Base Plate Rear Side Plate Bottom Foam Motor Gasket Bolt Motor Fixer Fan Motor Centrifugal Fan Evaporator Connection Cable-cross Loop shunt Electronic Expansive Valve...
Page 244 DC INVERTER MULTI VRF MAINTENANCE GMV-R22T/NaA-K GMVL-R22T/NaA –K GMV-R28T/NaA-K GMVL-R28T/NaA -Kexploded views...
Page 245 DC INVERTER MULTI VRF MAINTENANCE Product Code CM500N0100 Display Board 30296309 20182703 Water Tray 12312702 Water Tray Foam for Fresh Air Intaking 12312703 Water Tray Foam 76712709 Fan Fixer 10312702 Centifugal Fan 15704114 Motor FN11T-1 01844136 Evap Support 010027071 Evaporator Assy...
Page 246 DC INVERTER MULTI VRF MAINTENANCE (4)GMV-R36T/NaA -K GMVL-R36T/NaA -K GMV-R45T/NaA -K GMVL-R45T/NaA -K exploded views...
Page 247 DC INVERTER MULTI VRF MAINTENANCE Product Code CM500N0120 Display Board 30296309 20182703 Water Tray 12312702 Water Tray Foam for Fresh Air Intaking 12312703 Water Tray Foam 76712709 Fan Fixer 10312702 Centifugal Fan 15704114 Motor FN11T-1 01072714 Evap Support 01029608 Evaporator Assy...
Page 248 DC INVERTER MULTI VRF MAINTENANCE 5.2 .2 1 GMV(L)-R22P/Na-K,GMV(L)-R25P/Na-K,GMV(L)-R28P/Na-K,GMV(L)-R32P/Na-K,GMV(L)-R36P/Na-K...
Page 249 DC INVERTER MULTI VRF MAINTENANCE Top Cover Sub-assy 01259052 01259052 Hook 02112446 02112446 Seal of Left Side Plate Sub-assy 01499051 01499051 Seal of Connection Pipe Sub-assy 01499053 01499053 Electric Box Assy 01408739 01394605 Left Side Plate Sub-assy 01308788 01308788 Left Support of Evaporator...
Page 250 DC INVERTER MULTI VRF MAINTENANCE 2 GMV(L)-R40P/Na-K,GMV(L)-R45P/Na-K,GMV(L)-R50P/Na-K...
Page 251 DC INVERTER MULTI VRF MAINTENANCE Top Cover Sub-assy 01259064 Hook 02112446 Seal of Connection Pipe 2 01498644 Seal of Connection Pipe 1 01498604 Electric Box Assy 01404688 Left Side Plate Sub-assy 01308668 Left Support of Evaporator 01078629 Liquid-entered Pipe Sub-assy...
Page 252 DC INVERTER MULTI VRF MAINTENANCE 3 GMV(L)-R56P/Na-K,GMV(L)-R63P/Na-K,GMV(L)-R71P/Na-K,GMV(L)-R80P/Na-K...
Page 253 DC INVERTER MULTI VRF MAINTENANCE Top Cover Sub-assy 01258652 Hook 02118504 Left Side Seal-hole Plate Sub-assy 01308680 Seal of Connection Pipe 01498610 Electric Box Assy 01394609 Left Side Plate Sub-assy 01308676 Left Support of Evaporator 01078603 Liquid-entered Pipe Sub-assy 04324603...
Page 254 DC INVERTER MULTI VRF MAINTENANCE 4 GMV(L)-R90P/Na-K,GMV(L)-R100P/Na-K,GMV(L)-R112P/Na-K,GMV(L)-R125P/Na-K,GMV(L)-R140P/Na-K...
Page 255 DC INVERTER MULTI VRF MAINTENANCE Top Cover Sub-assy 01258606 Hook 02118504 Left Side Seal-hole Plate Sub-assy 01308673 Seal of Connection Pipe 01498601 Electric Box Assy 01394602 Left Side Plate Sub-assy 01308676 Left Support of Evaporator 01078603 Liquid-entered Pipe Sub-assy 03338802...
Page 256 DC INVERTER MULTI VRF MAINTENANCE GMV L -R22P/NaB-K, GMV L -R22PS/NaB-K, GMV L -R28P/NaB-K, GMV L -R28PS/NaB-K, GMV L -R36P/NaB-K, GMV L -R36PS/NaB-K, GMV L -R45P/NaB-K, GMV L -R45PS/NaB-K, GMV L -R56P/NaB-K, GMV L -R56PS/NaB-K, GMV L -R71P/NaB-K, GMV L -R71PS/NaB-K...
Page 257 DC INVERTER MULTI VRF MAINTENANCE List of components Name Material Code GMVL-R22P/NaB-K GMVL-R28P/NaB-K GMVL-R36P/NaB-K 01494118 Side Plate of Air outlet Left Support of 01094122 Evaporator 01024231 Evaporator Assy 01024232 Electric expand valve 43040001 fitting Right Support of 01094121 Evaporator Left Side Plate Sub...
Page 258 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMVL-R22PS/NaB-K GMVL-R28PS/NaB-K GMVL-R36PS/NaB-K 01494118 Side Plate of Air outlet Left Support of 01094122 Evaporator 01024231 Evaporator Assy 01024230 01024232 Electric expand valve 43040001 fitting Right Support of 01094121 Evaporator Left Side Plate Sub...
Page 259 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMV-R22P/NaB-K GMV-R28P/NaB-K GMV-R36P/NaB-K 01494118 Side Plate of Air outlet Left Support of 01094122 Evaporator 01024231 Evaporator Assy 01024232 Electric expand valve 43040001 fitting Right Support of 01094121 Evaporator Left Side Plate Sub...
Page 260 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMV-R22PS/NaB-K GMV-R28PS/NaB-K GMV-R36PS/NaB-K 01494118 Side Plate of Air outlet 01094122 Left Support of Evaporator 01024231 Evaporator Assy 01024230 01024232 43040001 Electric expand valve fitting 01094121 Right Support of Evaporator 01314172 Left Side Plate Sub-assy...
Page 261 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMVL-R45PS/NaB-K GMVL-R45P/NaB-K 01498641 Side Plate of Air outlet 01805280 Left Support of Evaporator 01024211 Evaporator Sub-assy 43040001 Electric expand valve fitting 01078625 Right Support of Evaporator 01314230 Left Side Plate Sub-assy 01494128...
Page 262 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMV-R45PS/NaB-K GMV-R45P/NaB-K 01498641 Side Plate of Air outlet 01805280 Left Support of Evaporator 01024211 Evaporator Assy 43040001 Electric expand valve fitting 01078625 Right Support of Evaporator 01314230 Left Side Plate Sub-assy 01494128...
Page 263 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMVL-R56P/NaB-K GMVL-R71P/NaB-K 01499074 Side Plate of Air outlet 01078603 Left Support of Evaporator 01024221 Evaporator Assy 43040001 Electric expand valve fitting 01078604 Right Support of Evaporator 01315255 Left Side Plate Sub-assy 01308680...
Page 264 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMVL-R56PS/NaB-K GMVL-R71PS/NaB-K 01499074 Side Plate of Air outlet 01078603 Left Support of Evaporator 01024234 Evaporator Sub-assy 43040001 Electric expand valve fitting 01078604 Right Support of Evaporator 01314225 Left Side Plate Sub-assy 01494131...
Page 265 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMV-R56P/NaB-K GMV-R71P/NaB-K 01499074 Side Plate of Air outlet 01078603 Left Support of Evaporator 01024234 Evaporator Sub-assy 43040001 Electric expand valve fitting 01078604 Right Support of Evaporator 01314225 Left Side Plate Sub-assy 01494131...
Page 266 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMVL-R56PS/NaB-K GMVL-R71PS/NaB-K GMV-R56PS/NaB-K GMV-R71PS/NaB-K 01499074 Side Plate of Air outlet 01078603 Left Support of Evaporator 01805279 01024234 Evaporator Assy Electric expand valve fitting 43040001 01078604 Right Support of Evaporator Left Side Plate Sub-assy...
Page 267 DC INVERTER MULTI VRF MAINTENANCE GMV L -R90P/NaB-K, GMV L -R90PS/NaB-K, GMV L -R112P/NaB-K, GMV L -R112PS/NaB-K, GMV L -R140P/NaB-K, GMV L -R140PS/NaB-K...
Page 268 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMVL-R90P/NaB-K GMVL-R112P/NaB-K GMVL-R140P/NaB-K 01498608 Air outlet side board assy 15404119 Water pump assy 45010201 Water level switch 43040001 Electric expand valve fitting 01024222 Evaporator assy 01024218 01805279 Left support of evaporator 01804703...
Page 269 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMVL-R90PS/NaB-K GMVL-R112PS/NaB-K GMVL-R140PS/NaB-K Air outlet side board assy 01498608 15404119 Water pump assy 15404118 45010201 Water level switch 450102012 Electric expand valve fitting 43040001 01024233 Evaporator assy 01024218 01805279 Left support of evaporator...
Page 270 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMV-R90P/NaB-K GMV-R112P/NaB-K GMV-R140P/NaB-K 01498608 Air outlet side board assy 15404119 Water pump assy 45010201 Water level switch 43040001 Electric expand valve fitting 01024222 Evaporator assy 01024218 01805279 Left support of evaporator 01804703...
Page 271 DC INVERTER MULTI VRF MAINTENANCE Name Material Code GMV-R90PS/NaB-K GMV-R112PS/NaB-K GMV-R140PS/NaB-K Air outlet side board assy 01498608 15404119 Water pump assy 15404118 45010201 Water level switch 450102012 Electric expand valve fitting 43040001 01024233 Evaporator assy 01024218 01805279 Left support of evaporator...
Page 272 DC INVERTER MULTI VRF MAINTENANCE 5.2 .3...
Page 273 DC INVERTER MULTI VRF MAINTENANCE Wall-Mounting Frame Rear Case Evaporator Assy Cross Flow Fan Ring of Bearing Drainage hose Water Tray Swing Louver Swing Linkage 1 Swing Linkage 2 Front Case Screw Cover Filter Remote Control Y612C Decorate Piece Receiver Board...
Page 274 DC INVERTER MULTI VRF MAINTENANCE...
Page 275 DC INVERTER MULTI VRF MAINTENANCE Wall-Mounting Frame 01252384 Rear Case 22202050 Evaporator Assy 01004629 Cross Flow Fan 10352005 Ring of Bearing 76712015 Drainage hose 05232411 Water Tray 20182030 Swing Louver 10512041 Swing Linkage 10582439 Front Case 200022955 Screw Cover 24252007...
Page 276 DC INVERTER MULTI VRF MAINTENANCE...
Page 277 DC INVERTER MULTI VRF MAINTENANCE Wall-Mounting Frame `01252004 Rear Case `22202329 Fan Bearing `76512203 Screw Cover `24252015 Swing Louver `10512429 Swing Link 1 `10582057 Swing Link 2 `10582058 Water Tray `20182057 Guide Louver up `10512085 Guide Louver down `10512086 Cross Flow Fan...
Page 278 DC INVERTER MULTI VRF MAINTENANCE...
Page 279 DC INVERTER MULTI VRF MAINTENANCE Wall-Mounting Frame ` 01252398 Rear Case ` 22202091 Fan Bearing ` 76512203 Screw Cover ` 242520053 Swing Louver ` 10512110 Swing Link ` 10582040 Water Tray ` 20182043 Guide Louver up ` 10512062 Guide Louver down...
Page 280 DC INVERTER MULTI VRF MAINTENANCE...
Page 281 DC INVERTER MULTI VRF MAINTENANCE Wall Mounting Frame 01252220 Rear Case 222020012 Evaporator Assy 01004628 Cross Flow Fan 10352001 O-Gasket of Cross Fan Bearing 76512203 Drain Pipe 0523001401 Water Tray 201820272 Air Louver 10512080 Swing Lever 10582002 Swing Lever 10582003...
Page 282 DC INVERTER MULTI VRF MAINTENANCE...
Page 283 DC INVERTER MULTI VRF MAINTENANCE GMV(L)-R36G/NaC-K GMV(L)-R45G/NaC-K Part Name Code Qty. Wall Mounting Frame 01252384 Rear Case Sub-Assy 22202051 Evaporator Assy 01004629 Cross Flow Fan 10352005 Ring of Bearing 76712015 Drain Pipe 0523001401 Water Tray 201820302 Air Louver 10512041 Swing Lever...
Page 284 DC INVERTER MULTI VRF MAINTENANCE 5.2 .4...
Page 285 DC INVERTER MULTI VRF MAINTENANCE GMV(L)-R28Zd/Na-K,GMV(L)-R36Zd/Na-K,GMV(L)-R50Zd/Na-K Part Name Code Qty. Rear Side Plate 01302013 Handle 26232001 Left Decoration Plate 261124152 Rear Side Plate of Air Outlet 0130201501 Louver 1051953202 Right Decoration Plate 261124162 Shaft of Louver II 10512026 Louver Support...
Page 286 DC INVERTER MULTI VRF MAINTENANCE Left Fixing Plate of Evaporator 01072410 Motor Clamp 26112026 Step Motor MP35CA 15212402 Left Swing Motor Fixer 26152005 01024134 Evaporator Assy 01024135 01024121 Water Lead Panel 01362001 Cover of Evaporator 01072409 Fixed Mount 01708763 Centrifugal Fan...
Page 287 DC INVERTER MULTI VRF MAINTENANCE...
Page 288 DC INVERTER MULTI VRF MAINTENANCE GMV(L)-R71Zd/Na-K Part Name Code Qty. Left Decoration Plate 261124172 Shaft of Louver I 10512025 Swing Louver Fixer sub-assy 013324232 Louver Support 24212020 Louver Fixer 24222016 Louver 105124042 Shaft of Louver II 10512026 Right Decoration Plate...
Page 289 DC INVERTER MULTI VRF MAINTENANCE Motor Fixing Plate 01332426 Front Snail Shell 22202031 Rear Snail Shell 22202032 Rear Side Plate 01302429 Motor Support 01702410 Filter 11122012 Water Lead Plate 01362401 Front Grill 22412011 Front Grill Clip 2 26252003 Remote Controller...
Page 290 DC INVERTER MULTI VRF MAINTENANCE...
Page 291 DC INVERTER MULTI VRF MAINTENANCE GMV(L)-R71Zd/Na-K Part Name Code Qty. Left Decoration Plate 261124152 Shaft of Louver I 10512025 Swing Louver Fixer sub-assy 0133241802 Louver Support 24212019 Louver Fixer 24212018 Shaft of Louver II 10512026 Louver 105124082 Right Decoration Plate...
Page 292 DC INVERTER MULTI VRF MAINTENANCE Motor Clamp 01702405 Axes Connector 73012403 Motor Fixing Plate 01332425 Front Snail Shell 22202030 Rear Snail Shell 22202029 Rear Side Plate 01302431 Motor Support 01702411 Filter 11122013 Water Lead Plate 01362407 Front Grill 22412010 Front Grill Clip 2...
Page 293 DC INVERTER MULTI VRF MAINTENANCE 5.2.5 1-way cassette Code Part Name Qty. Code Part Name Qty. Water Lead Panel...
Page 294 DC INVERTER MULTI VRF MAINTENANCE...

This manual is also suitable for:

Gmv(l)-pd100w/nab-k Gmv(l)-pd120w/nab-k Gmv(l)-pd140w/nab-k Gmv(l)-pd160w/nab-k Gmv-r22p/na-k Gmvl-r22p/na-k ... Show all

Gree DC Inverter Multi VRF Service Manual

Product

Models List

Nomenclature

Function

Product Data

Piping Diagram

Control

Operation Flowchart

Main Logic

Wireless Remote Controller

Wired Controller

Mini Centralized Controller (Region Controller)

Centralized Controller

Monitoring Software

Installation

Precautions for Installation

Flow Chart of Installation

Installation of Outdoor Unit

Installation of Indoor Unit

Installation Requirements of Refrigerant Piping

Installation of Refrigerant Piping

Installation of Electronic Expansion Valve Assy

Installation of Condensate Pipe

Electrical Installation

Maintenance

List of Unit Errors

Flow Chart of Troubleshooting

Wiring Diadram

Disassembly and Assembly Procedure of Main Parts

Exploded Views and Part List

Quick Links

Need help?

Questions and answers

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Summary of Contents for Gree DC Inverter Multi VRF

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Table of Contents