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DC Inverter Side Discharge VRF Ⅱ for North America Capacity: 24 kBtu/h~60 kBtu/h Rated Frequency: 60 Hz
PRODUCT ........................................................................................................................... 2 1 Product List ....................................................................................................................... 2 2 Product Features .............................................................................................................. 2 2.1 General introduction ................................................................................................................ 2 3 Specifications .................................................................................................................... 3 3.1 Outdoor Unit ............................................................................................................................ 3 3.2 Operation range ....................................................................................................................... 5 4 Product Capacity Correction ............................................................................................. 5 4.1 Instruction of Product Capacity Correction .............................................................................. 5 4.2 Capacity Code ......................................................................................................................... 5 4.3 Capacity Correction Formula ................................................................................................... 6 5 Principal of Operation ....................................................................................................... 7 CONTROL ......................................................................................................................... 10 1 Units’ Control .................................................................................................................. 10 1.1 Schematic diagram of units’ control ....................................................................................... 10 1.2 Operation Flow Chart ............................................................................................................. 11 1.3 Unit Control Functions ........................................................................................................... 12 2 Wired Controller .............................................................................................................. 13 2.1 Control panel ......................................................................................................................... 13 2.2 Installation and removal ......................................................................................................... 16 3 Remote Controller ........................................................................................................... 19 4 Monitoring Software ........................................................................................................ 21 4.1 Function introduction ............................................................................................................. 21 4.2 Connection of computer and units ......................................................................................... 21 4.3 Parts introduction ................................................................................................................... 22 4.4 Software introduction ............................................................................................................. 24 INSTALLATION .................................................................................................................. 64 1 Engineering Installation Preparation and Notice ............................................................. 64 1.1 Installation notice ................................................................................................................... 64 1.2 Installation key points and importance ................................................................................... 64 2 Installation Materials Selection ....................................................................................... 65 2.1 Refrigerant piping .................................................................................................................. 65 2.2 Condensate water pipe .......................................................................................................... 66 2.3 Insulation material ................................................................................................................. 66 2.4 Communication cable and control cable ................................................................................ 66 2.5 Power cable ........................................................................................................................... 67 2.6 Hanger rod and support ......................................................................................................... 67 3 Installation of outdoor unit ............................................................................................... 67 CONTENTS
3.1 Check before installation ....................................................................................................... 67 3.2 Selection of installation site ................................................................................................... 67 3.3 Carrying and installing outdoor unit ....................................................................................... 68 3.4 Installation notices ................................................................................................................. 68 3.5 Fixing and damping of unit .................................................................................................... 68 3.6 Outline dimension and position of installation hole ................................................................ 68 3.7 Installation space requirement ............................................................................................... 70 4 Installation of Electronic Expansion Valve Assy (unit with external EXV) ........................ 70 5 Installation of Refrigerant Pipeline .................................................................................. 70 5.1 Allowable Length and Height Difference of Connection Pipe ................................................ 70 5.2 Dimension of Pipe (Main Pipe) from ODU to the 1st Indoor Branch ..................................... 72 5.3 Selection of Indoor Branches ................................................................................................ 73 5.4 Dimension of Pipe between Indoor Branches ....................................................................... 73 5.5 Dimension of Pipe between Indoor Branch and IDU ............................................................. 74 6 Installation of Connection Pipe ....................................................................................... 75 6.1 Flaring Process ...................................................................................................................... 75 6.2 Disassembly of Compressor Feet ......................................................................................... 80 6.3 Vacuum Pumping, Refrigerant Adding ................................................................................... 80 7 Electric Wiring ................................................................................................................. 84 7.1 Wiring Diagram ...................................................................................................................... 84 7.2 Power Cable Wire Gauge and Circuit Breaker Selection ...................................................... 85 8 Debugging of Unit ........................................................................................................... 86 8.1 Preparation for debugging ..................................................................................................... 86 8.2 Debugging of unit .................................................................................................................. 87 8.3 Parameters reference value for the normal operation of unit ................................................ 93 1 Malfunction List ............................................................................................................... 96 1.1 Malfunction list for the wired controller .................................................................................. 96 1.2 Status display table for indicators on main board of outdoor unit .......................................... 96 2 Troubleshooting ............................................................................................................ 100 3 Power Distribution of Unit ............................................................................................. 110 3.1 Power distribution of unit ...................................................................................................... 110 3.2 Main electric parts ................................................................................................................ 110 3.3 Circuit diagram ..................................................................................................................... 111 4 Removal of Parts .......................................................................................................... 113 4.1 Key parts .............................................................................................................................. 114 4.2 Removal of key parts ............................................................................................................ 115 5 Common Maintenance .................................................................................................. 135 5.1 Vacuum drying for the system ............................................................................................. 135 6 Exploded View of Unit and Parts’ List ........................................................................... 136
GREE DC Inverter Side Discharge VRF Ⅱ for North America PRODUCT 1
GREE DC Inverter Side Discharge VRF Ⅱ for North America PRODUCT 1 Product List Cooling Capacity Heating Capacity Power Supply Refrigerant Appearance Model Product Code kW(Btu/h) kW (Btu/h) GMV-24WL/C-T(U) CN850W0 740 7 (24000) 8.2 (28000) GMV-28WL/C-T(U) CN850W0 750 8.2 (28000) 8.8 (30000) GMV-36WL/A-T(U) CN850W0 230 11 (37500) 12.3 (42000) 208/230V ~ 60Hz R410A GMV-48WL/A-T(U) CN850W0 220 14.1 (48000) 15.8 (54000) GMV-60WL/A-T(U) CN850W0 270 17.6 (60000) 18.7 (64000) GMV-36WL/C-T(U) CN850W1 070 11 (37500) 12.3 (42000) GMV-48WL/C-T(U) CN850W1 080 14.1 (48000) 15.8 (54000) GMV-60WL/C-T(U) CN850W1 090 17.6 (60000) 18.7 (64000)) 2 Product Features 2.1 General introduction Gree DC Inverter Multi VRF System II is the latest generation of DC inverter units. One set of air-cooled outdoor unit can be connected with multiple direct evaporation indoor units that are of the same or different forms and capacity. This refrigerating system can directly provide air conditioning for one or more areas, and is applicable for residential and light commercial uses. It features high energy efficiency, strong anti-interference capability, long connectable pipe, wide operation range, good sound quality, intelligent capacity regulation, complete protection, etc. 2.1.1 Features (1) Super high energy efficiency The 2nd generation of DC Inverter Multi VRF System adopts DC motor to realize complete direct current and upgrade the energy efficiency. SEER is up to 16; HSPF of GMV-24WL/C-T(U) 、 GMV-28WL/C-T(U) 、GMV-36WL/A-T(U) and GMV-48WL/A-T(U) is up to 9; HSPF of and 2
GREE DC Inverter Side Discharge VRF Ⅱ for North America GMV-60WL/A-T(U) is up to 8.2. For the upgraded efficiency DC Inverter Multi VRF System, SEER is up to 19.5~22; HSPF of GMV-36WL/C-T(U) and GMV-60WL/C-T(U) is up to 10.5~11; HSPF of GMV-48WL/C-T(U) is up to 10.6~10.8. (2) New generation CAN bus communication Due to the latest communication method—CAN Bus Communication, system’s anti-interference capability is stronger and the control on indoor units is more accurate, with higher reliability. Specialized shield wire is no more needed and ordinary communication wire can be applied in the construction, which has increased the installation flexibility. (3) Long connection pipe The maximum length of connection pipe is 300m（984ft） (in total) and the farthest connection pipe between indoor and outdoor units can be 120（394ft）m’s long, which has extended the installation condition and reduced the limit of installation distance. (4) Wide operation range Units can operate reliably in a wide temperature range (cooling: -5~48℃(23~118℉) ), heating: -20~27℃(-4~81℉) (5) Fine sound quality Through a series of optimized measures, system has reduced the throttle noise and oil return noise of indoor units, gas bypass noise, etc. so that units are more comfortable regarding sound quality. (6) Intelligent PID capacity regulation With the independently developed PID capacity regulation technology, units are able to control the indoor ambient temperature more quickly and reduce the fluctuation of room temperature. (7) Complete protection Units are equipped with a series of protection to accurately identify errors and protect the units, which has ensured reliable and safe operation. 3 Specifications 3.1 Outdoor Unit Model GMV-24WL/C GMV-28WL/C GMV-36WL/A- GMV-48WL/A- GMV-60WL/A- -T(U) -T(U) T(U) T(U) T(U) kW 7 8.2 11 14.1 17.6 Cooling capacity Btu/h 24000 28000 37500 48000 60000 kW 8.2 8.8 12.3 15.8 18.7 Heating capacity Btu/h 28000 30000 42000 54000 64000 m³/h 3900 3900 6000 6300 7800 Circulating air volume CFM 2295 2295 3531 3708 4590 Noise dB(A) 57 57 55 56 63 Kg 2.4 2.4 5 5 6.5 Refrigerant charge volume oz 84.7 84.7 176 176 229 Power supply 208/230V~60 Hz 208/230V~60 Hz 208/230V~60 Hz 208/230V~60 Hz 208/230V~60 Hz 3
GREE DC Inverter Side Discharge VRF Ⅱ for North America Model GMV-24WL/C GMV-28WL/C GMV-36WL/A- GMV-48WL/A- GMV-60WL/A- T(U) Rated power -T(U) -T(U) T(U) T(U) Cooling kW 2.00 2.70 3.25 4.47 6.45 Heating kW 2.40 2.60 3.72 3.93 5.60 input mm 980×360×790 900×340×134 5 940×320×1430 Unit Dimensions (WxDxH) inch 38 6/19×14 3/16×31 2/16 35 7/16 ×13 3/8×53 37×12 9/16×56 1/4 mm 1094×474×817 998×458×151 5 1033×433×1580 Dimensions (WxDxH) inch 43 1/16×18 11/16×32 3/16 39 5/16 ×18×59 5/8 40 5/8×17×62 3/16 Compressor QXFS-D25Zx090H QXAS-F428z X050A LNB53FCFMC Water-proof level IPX4 IPX4 IPX4 IPX4 IPX4 Suitable climite T1 T1 T1 T1 T1 mm Φ15.9 Φ15.9 Φ15.9 Φ15.9 Φ19.05 Gas inch Φ5/8 Φ5/8 Φ5/8 Φ5/8 Φ3/4 Connecti mm Φ9.52 Φ9.52 Φ9.52 Φ9.52 Φ9.52 on pipe Liquid inch Φ3/8 Φ3/8 Φ3/8 Φ3/8 Φ3/8 Connection Bell mouth connection Bell mouth connection Bell mouth connection Bell mouth connection Bell mouth connection Method Net weight Kg 80 80 110 110 124 oz 2822 2822 3880 3880 4375 Model GMV-36WL/C-T(U) GMV-48WL/C-T(U) GMV-60WL/C-T(U) kW 11 14.1 17.6 Cooling capacity Btu/h 37500 48000 60000 kW 12.3 15.8 18.7 Heating capacity Btu/h 42000 54000 64000 m³/h 6000 6300 7800 Circulating air volume CFM 3531 3708 4590 Noise dB(A) 55 55 63 Kg 3.3 3.3 4.6 Refrigerant charge volume oz 116.4 116.4 162.3 Power supply 208/230V~60Hz 208/230V~60Hz 208/230V~60Hz Rated power Cooling kW 3.2 4.2 5.5 Heating kW 3.2 4.6 5.2 input Unit Dimensions mm 900×340×1345 940×320×1430 (WxDxH) inch 35 3/8×13 3/8×53 37×12 9/16×56 1/4 mm 998×458×1500 1038×438×1580 Dimensions (WxDxH) inch 39 1/4×18×59 40 5/8×17 1/4×62 1/4 Compressor QXFS-F428zX450E LNB53FCFMC Water-proof level IPX4 IPX4 IPX4 Suitable climite T1 T1 T1 mm Φ15.9 Φ15.9 Φ19.05 Gas Connection inch Φ5/8 Φ5/8 Φ3/4 pipe Liquid mm Φ9.52 Φ9.52 Φ9.52 4
GREE DC Inverter Side Discharge VRF Ⅱ for North America Model GMV-36WL/C-T(U) GMV-48WL/C-T(U) GMV-60WL/C-T(U) inch Φ3/8 Φ3/8 Φ3/8 Connection Method Bell mouth connection Bell mouth connection Bell mouth connection Net weight Kg 111.5 111.5 124 oz 3933 3933 4375 Note: ① Units conform to design standard: ARI 210/240. ② Specifications may be changed due to product improvement. Please refer to nameplates of the units. ③ Noise data are collected from a semi-anechoic room. Decibels may be slightly higher in actual operation due to environmental change. ④ Refrigerant charge volume listed in the table is based on the condition where indoor and outdoor units are at a same level and with no connection pipe. Supplementary refrigerant needs to be charged according to actual circumstance. 3.2 Operation range Cooling Outdoor temperature: -5~48℃ (23~118℉) Heating Outdoor temperature: -20℃～27℃(-4~81℉) 4 Product Capacity Correction 4.1 Instruction of Product Capacity Correction Nominal cooling capacity and nominal heating capacity are tested under given conditions: (1) Rated cooling or heating condition (2) No height difference between indoor unit and outdoor unit (3) Short connection pipe If the three conditions above have changed, the cooling and heating capacity will change correspondingly and correction is needed. 4.2 Capacity Code Instruction of capacity code GMV-24WL/C-T(U) 、GMV-28WL/C-T(U) 、GMV-36WL/A-T(U) 、GMV-48WL/A-T(U) and GMV-60WL/A-T(U)、GMV-36WL/C-T(U) 、GMV-48WL/C-T(U) and GMV-60WL/C-T(U) are identical in components, systems and structure, etc. While the required capacity is set through the capacity DIP switch. Sheet of DIP Switch (5-bit DIP switch) Model Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 GMV-24WL/C-T(U) 1 0 0 0 0 GMV-28WL/C-T(U) 0 0 0 1 0 GMV-36WL/A-T(U) 0 0 1 0 0 GMV-48WL/A-T(U) 0 0 1 0 1 GMV-60WL/A-T(U) 0 1 0 0 0 GMV-36WL/C-T(U) 0 0 1 0 0 GMV-48WL/C-T(U) 0 0 1 0 1 GMV-60WL/C-T(U) 0 1 0 0 0 5
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.3 Capacity Correction Formula 4.3.1 Rated capacity of outdoor unit Model GMV-24WL/ GMV-28WL/ GMV-36WL/A-T(U) GMV-36WL/C-T(U) GMV-48WL/A-T(U) GMV-48WL/C-T(U) GMV-60WL/A-T(U) GMV-60WL/C-T(U) C-T(U) C-T(U) kW 7 8.2 11 14.1 17.6 Rated cooling capacity Btu/h 24000 28000 37500 48000 60000 kW 8.2 8.8 12.3 15.8 18.7 Rated heating capacity Btu/h 28000 30000 42000 54000 64000 4.3.2 Correction factor of indoor and outdoor temperature (1) Correction factor of cooling capacity (2) Correction factor of heating capacity 4.3.3 Correction factor of pipe length and height difference Symbol description: Hp：Height difference in case indoor unit is below outdoor unit（m/feet）; Hm: Height difference in case indoor unit is above outdoor unit （m/feet）; L: Length of one-way equivalent pipe Below table shows the capacity variance ratio for 100% full load in standard working condition 6
GREE DC Inverter Side Discharge VRF Ⅱ for North America (thermostat setting is 16℃(61℉) for cooling and 30℃(86℉) for heating). Variance ratio of heating capacity NOTE: m 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 ft 0 33 66 98 131 164 197 230 262 295 328 361 394 427 459 492 5 Principal of Operation Components in flowcharts are presented according to the following table: Name Compressor 4-way valve Cut-off valve One-way valve Capillary tube Symbol Name Gas-liquid Pressure Pressure Axial-flow finned heat exchanger Electronic expansion valve separator switch sensor Symbol 7
GREE DC Inverter Side Discharge VRF Ⅱ for North America In cooling, the low-temperature and low-pressure refrigerant gas from each indoor heat exchanger will be merged and inhaled by the compressor and then become high-temperature and high-pressure gas, which will later be discharged into outdoor heat exchangers. By exchanging heat with outdoor air, refrigerant will turn to liquid and flow to each indoor unit via Y-type branch or manifold. Pressure and temperature of the refrigerant will then be lowered by throttle elements before it flows into indoor heat exchangers. After exchanging heat with indoor air, refrigerant wil become low-temperature and low-pressure gas again and repeat the circulation so as to realize the cooling effect. In heating, 4-way valve will be energized to make refrigerant circulate in a reverse direction of cooling. Refrigerant will release heat in indoor heat exchangers (electric heating elements will also work under certain circumstance and release heat) and absorb heat in outdoor heat exchangers circularly so as to realize the heating effect. 8
GREE DC Inverter Side Discharge VRF Ⅱ for North America CONTROL 9
GREE DC Inverter Side Discharge VRF Ⅱ for North America CONTROL 1 Units’ Control 1.1 Schematic diagram of units’ control Interpretation on the schematic diagram (1) High pressure switch is used to identify system’s high and low pressure. When pressure is too high, the switch will break off and send a signal to main board. Main board will pass this signal to controller, where the error will be displayed, and stop unit from working. (2) High/low pressure sensor is used to test unit’s high/low pressure and send real-time data to controller, which will control each unit’s output according to the control logic. (3) Temperature sensors are used to test the tube temperature of the unit and send data to the controller, which will control each unit’s output according to the control logic. 10
GREE DC Inverter Side Discharge VRF Ⅱ for North America 1.2 Operation Flow Chart 1.2.1 Operation Flow Chart of Indoor Unit (1) Cooling operation (2) Heating operation (3) Drying operation (4) Operation procedure is the same as that of cooling operation (5) Fan operation (6) The EXV of the indoor unit closes in fan mode, so that there is no refrigerant flow in the refrigerant pipe of that indoor unit. But the fan of that indoor unit operates. 11
GREE DC Inverter Side Discharge VRF Ⅱ for North America 1.2.2 Operation Flow Chart of Outdoor Unit (1) Cooling operation (2) Heating operation 1.3 Unit Control Functions 1.3.1 Control functions of outdoor unit (1) Include the following contents. (2) Compressor capacity output. (3) Compressor start-up control. (4) Outdoor fan control. (5) Defrosting control. (6) Heating EXV control. (7) Subcooling valve control. (8) Refrigerant lacking control. 12
GREE DC Inverter Side Discharge VRF Ⅱ for North America 1.3.2 Control functions of indoor unit (1) Include the following contents (2) Cool (3) Dry (4) Heat (5) Fan (6) Heating temperature compensation (7) Anti-freezing (8) Air swing (9) Drainage pump (10) IDU EXV (11) Static pressure level 2 Wired Controller 2.1 Control panel 13
GREE DC Inverter Side Discharge VRF Ⅱ for North America 14
GREE DC Inverter Side Discharge VRF Ⅱ for North America Button Graphics 15
GREE DC Inverter Side Discharge VRF Ⅱ for North America 2.2 Installation and removal 2.2.1 Installation dimensions mm 112 22 2.7 3.3 5 42.5 40 82.5 inch 4.41 0.87 0.11 0.13 0.20 1.67 1.57 3.25 2.2.2 Installation method Above is a simple installation method of wired controller. Please pay attention to the following: (1) Before installation, disconnect power of the indoor unit. Do not operate when power is connected. (2) Pull out the 2-core twisted pair cable from the installation hole on the wall and lead it through the hole on the back plate of wired controller. (3) Place the wired controller on wall and secure its back plate on wall with screw M4X25. (4) Connect the 2-core twisted pair cable to terminal H1 and terminal H2. Tighten up the screws. (5) Stick the cable in the slot that is left of the terminals and buckle the wired controller’s panel with its back plate. 16
GREE DC Inverter Side Discharge VRF Ⅱ for North America If caliber of the communication cord is too large, which causes difficulty in leading or sticking the cord according to above point 2 and point 5, strip some of the sheath of the communication cable to meet the installation requirement. 2.2.3 Removal method Fig.2.1.3 Removal of Wired Controller 2.2.4 Connection of communication cord There are 4 ways to connect wired controller with indoor units’ network: Fig. 2.2.4.1 One wired controller Fig. 2.2.4.2 Two wired controllers control one indoor unit controls one indoor unit 17
GREE DC Inverter Side Discharge VRF Ⅱ for North America Fig. 2.2.4.3 One wired controller controls multiple indoor units simultaneously. Fig. 3.6Two wired controllers control multiple indoor units simultaneously. 18
GREE DC Inverter Side Discharge VRF Ⅱ for North America 3 Remote Controller (1) Remote controller YAP1F Button name and function introduction No. Button name Function 1 ON/OFF Turn on or turn off the unit 2 TURBO Set turbo function 3 MODE Set operation mode 4 Set up&down swing status 5 I FEEL Set I FEEL function 6 TEMP Switch temperature displaying type on the unit’s display 7 Set health function and air function 8 LIGHT Set light function 9 X-FAN Set X-FAN function 10 SLEEP Set sleep function 11 CLOCK Set clock of the system 19
GREE DC Inverter Side Discharge VRF Ⅱ for North America No. Button name Function 12 TOFF Set timer off function 13 TON Set timer on function 14 Set left&right swing status 15 FAN Set fan speed 16 / Set temperature and time (2) Remote controller YV1L1 No. Button name Function 1 ON/OFF Turn on or turn off the unit 2 FAN Set fan speed 3 ▲/▼ Set temperature and time 4 MODE Set operation mode 5 Set quiet function 6 Set health function and air function 7 Set left&right swing status 8 Set up&down swing status 9 X-FAN Set X-FAN function 10 TIMER ON Set timer on function 11 TIMER OFF Set timer off function 12 SAVE Set energy-saving function 13 SLEEP Set sleep function 14 LIGHT Set light function 15 CLOCK Set clock of the system 16 I FEEL Set I FEEL function 17 TEMP Switch temperature displaying type on the unit’s display 20
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4 Monitoring Software 4.1 Function introduction With the rapid development of building complex, more and more central air conditioners in various models are used in different places, resulting in inconvenience for the management of air conditioners. Integrating with telecommunication technology and computing software, Gree Commissioning Tool Kits can realize the comprehensive monitor, control and commissioning on central air conditioners. It is an efficient solution for the management of central air conditioners that are separated in different parts of a building. Administrator doesn’t need to control every unit on site, but rather controls the units by just sitting in front of a computer. This will not only improve the productivity, but also reduce cost on human resources, property and management. Gree Commissioning Tool Kits can monitor and control the 2nd generation of Gree Multi VRF. User can monitor and control units by monitoring the computer. This software is an efficient tool for the intelligent air conditioning management as well as installation and after-sales service and commissioning. It can debug units and control units’ operation status quickly and conveniently. It will not only improve the productivity but also reduce the difficulty and cost of commissioning and maintenance, providing better and faster service to customers. 4.2 Connection of computer and units It can be connected with single-system network or multi-system network. In the single-system network, indoor units or outdoor units are connectable, while in the multi-system network, only the master outdoor unit can be connected. Seen from the diagram, Gree commissioing network is made up of 3 parts: The 1st part is the monitoring computer, including Gree debugger and Gree USB converter driver that are installed in the computer. The 2nd part is Gree USB converter, which is to convert the air conditioning communication into computing communication. This part is made up of Gree USB data converter and USB data wire. The 3rd part is air conditioners, including outdoor units, indoor units and the connection wires. If connection wire is not long enough, it’s OK to connect via the patching board of the commissioning tool kits. In a single-system network, both indoor units and outdoor units can be connected, while in a multi-system network, only the master outdoor unit can be connected. 21
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.3 Parts introduction 4.3.1 List of parts Name Model Material no. Remark Gree USB data converter MC40-00/B 30118027 Convert the air conditioning communication (CD-ROM) DG40-33/A(C) 36400000003 Include Gree debugger, monitoring software, USB driver and USB converter Gree Commissioning Tool Kits USB wire \ 40020082 Wire connecting computer’s USB interface Communicaiton board \ 30118015 This board can be used when units are far from the computer. Board connection wire (1m) \ 4001023229 4-core wire connecting units and converter Board connection wire (5.5m) \ 4001023214 4-core wire connecting units and converter Instruction manual \ 64134100023 Instruction manual 4.3.2 Gree USB data converter 4.3.2.1 Functions introduction Gree USB data converter will convert the RS485, HBS and CAN commucation within the air conditioners into the communication that is recognizable by computer’s USB interface. 4.3.2.2 Appearance into computing communication configuring software. and converter 22
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.3.2.3 Operation instruction (1) Power LED: a red light. If the red light is on, it indicates normal power supply. If the red light is off, it indicates the power supply of converter is not normal. (2) Communication LEDs: yellow lights. When converter is working and the computer is transmitting data, the TX data transmitting light will be flickering. When units are uploading data to the computer, the RX data receiving light will be flickering. (3) When converter is under RS485 data transferring mode, the function LED of RS485 to USB will be on. (4) When converter is under CAN data transferring mode, the function LED of CAN to USB will be on. (5) When converter is under HBS data transferring mode, the function LED of HBS to USB will be on. (6) USB interface: connect USB data wire. (7) CAN interface: When converter is under CAN communication mode, connect air conditioner’s CAN data interface. CAN interface exhibits no polarity (A and B are equal). (8) HBS interface: When HBS converter is under HBS communication mode, connect air conditioner’s HBS data interface. HBS interface exhibits no polarity (This interface is not yet available for Gree debugger and the monitoring software). (9) RS485 interface: When RS485 converter is under RS485 communication mode, connect air conditioner’s RS485 data interface. RS485 interface exhibits polarity and terminal A and B are different. 23
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.3.2.4 Installation notice (1) Install indoors. To avoid collision, it is suggested to place it in the monitoring room together with the computer. (2) No need of power supply. Power is supplied through computer’s USB interface. 4.3.3 Communication board Communication board is mainly used for transferring data. It functions similar with a patching board. Provided that units are far away from the monitoring computer, communication board can be used for connection. 4.3.4 Communication cord 4.3.4.1 USB wire Connect USB wire with computer’s USB interface at one end and with the USB interface of USB data converter at the other end, as indicated below: 4.3.4.2 Board Connection Wire There are 2 board connection wires supplied for the commissioning tool kits. One is 1 meter’s long and the other is 5.5 meters’ long. They are only different in length. One end of the wire shall connect with air conditioner’s communication interface and the other end shall connect with CAN interface of Gree USB converter. As shown below, the wire can be connected to the communication interface of outdoor unit or the communication interface of indoor unit: 4.4 Software introduction (1) One-button commissioning Personnel responsible for the commissioning of air conditioners can start commissioning by pressing one button according to the commissioning logic of software, which will give the commissioning USB Wire Board Connection Wire 24
GREE DC Inverter Side Discharge VRF Ⅱ for North America order to units. Then commissioning will be started up automatically step by step. During the commissioning, the corresponding process will be ticked in green on the software interface. If any commissioning process is not normal, it will be displayed in red. (2) Comprehensive monitoring The software can monitor every part of the air conditioning system, including functions, equipment and components operating status. The monitoring results will be displayed in text or curve so that user can acquire the operating status of the entire system conveniently and straightforwardly. (3) Real-time control Air conditioner’s operating time and requirements may be different based on areas and functions. User can set units’ parameters on computer according to actual needs, such as the on/off, temperature, fan speed, mode, etc. Meanwhile, the software can also set or view the function parameters of outdoor units, gateway and other equipment. In this way, the mangement of central air conditioners is realized. (4) Replay history Software can replay and save the historical monitoring information in the data base. The replay speed can be selected and the information will be shown in text or curve. This function has greatly saved the time to track problem cause and resolved the difficulty of problem reproduction. (5) Applicable to multiple series, models and users Gree Commissioning Tool Kits is applicable to air conditioning system that comsists of multiple series and models. Later, it will be developed to cover all series of Gree central air conditioners, such as multi VRF, centrifugal chiller, screw type chiller, ground source heat pump units, modular units, fan coiled units, close control units, etc. It can be used by system and controller designers to develop and monitor units, or used for maintenance and commissioning. (6) Other functions For the convenience of users, the software has added functions like connection guide, printing screen, opening database folder, rebuilding database, changing database saving path, etc. 4.4.1 Software installation 4.4.1.1 Installation requirements (1) Computer Configuration Memory 1 GB at least 2 GB or above is preferred Hard Disc 10 GB available CPU Operation System (2) CD Playing Make sure you have administrator access to the computer and there is a CD-ROM in the computer. Put the CD into the CD-ROM. If it’s automically running, then the following display will be shown. Or double-click the file “Launcher.exe”. Core 2 or higher 1 GHz at least 2 GHz or above is preferred Windows Server 2003 SP3 or higher Windows XP SP3 or higher Windows Vista Windows 7 25
GREE DC Inverter Side Discharge VRF Ⅱ for North America For the first time to use Gree Commissioning Tool Kits, install these programmes: .Net Framework 4.0, USB Data Converter, Access Driver (necessary for versions below OFFICE 2007), Gree Debugger. 4.4.1.2 Installation flowchart Button Graphics This flowchart describes basically the software installation process. See below for details. 26
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.4.1.3 Installation process (1) Install .Net Framework 4.0 If your computer has installed .Net Framework 4.0 or versions above, there’s no need to install again. Otherwise, click “Install .Net Framework 4.0”. Extracting files 27
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click and select “I have read and accept the license terms”. Then click “Install”. Installation is in progress. 28
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click “Finish” to complete the installation. (2) Install Access Driver Before operating Gree commissioning software, please first install Access Driver (necessary for versions below OFFICE 2007). Click “Install Access Driver”. 29
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click ”Next”. Tick “I accept the terms in the License Agreement” and then click “Next” 30
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click “Browse” to change the default folder to the expected one, or click “Install” to continue the installation. Installation is in progress. 31
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click “Ok” to complete the installation. (3) Install Gree Debugger Before installing Gree debugger, make sure that your computer is installed with .Net Framework 4.0 or versions above. Then click “Install Gree Debugger”. Click “Next”. 32
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click “Browse” to select installation folder. If no change is needed for the folder, click “Next” to continue the installation. Click “Next”. 33
GREE DC Inverter Side Discharge VRF Ⅱ for North America Installation is in progress. Click “Close” to complete the installation. 34
GREE DC Inverter Side Discharge VRF Ⅱ for North America (4) Install USB Converter Driver If USB converter driver is already installed in your computer, this part can be skipped. Otherwise, click “Install USB Converter Driver”. Then the following installation window will be shown. 35
GREE DC Inverter Side Discharge VRF Ⅱ for North America This window will exit after installation is finished. (5) Install Gree USB Data Converter If converter baud rate is needed to be set, then converter configuring software must be installed. Click “Install Gree USB Data Converter”. Then select the setup language. You can choose Chinese ”simplified”, Chinese “traditional” or English. Then click “OK”. 36
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click “Next”. Tick “I accept the agreement”. Then click “Next” to continue installation. 37
GREE DC Inverter Side Discharge VRF Ⅱ for North America Click “Browse” to select your expected installation folder. Click “Next” to continue. Click “Browse” to change folder. Click “Next” to continue. 38
GREE DC Inverter Side Discharge VRF Ⅱ for North America If you want to create s desktop shortcut, tick “Creat a desktop icon”. Then click “Next” to continue. Destiniation location, folder and additional task will be shown in the next step. If you need to change any of it, please click “Back”. If not, click “Install” to start installation. 39
GREE DC Inverter Side Discharge VRF Ⅱ for North America Installaiton is in progress. Click “Finish” to complete the installation. 40
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.4.2 Data monitoring Gree Debugger。Start up Gree Debugger. On the original interface, user can select language and units system. Click “OK” to confirm the defaulted language and units system and start up the software. Select language. 41
GREE DC Inverter Side Discharge VRF Ⅱ for North America Select system of units. If units you want to monitor are already connected, and able to communicate normally, with correct COM and protocal, then you may click “Connect” to enter the interface of numbers. Otherwise, connect in accordance with the connection diagram shown below. 42
GREE DC Inverter Side Discharge VRF Ⅱ for North America COM selection: the serial port in your computer can be detected automatically. You just need to select your desired serial port. Protocal selection: This is to select the communication method of your units. Currently, CAN is applicable to the units. 43
GREE DC Inverter Side Discharge VRF Ⅱ for North America After the selection, click “Connnect”. If units can communicate normally with computer, then the interface of numbers will be shown soon. Otherwise, “Connecting” will be shown. There are several display zones on this interface. You can hide devices information and system information by clicking devices information icon and system icon . Display zones of indoor unit information and errors can be dragged up and down at the dividing lines. As to the display zone of outdoor modules information, it can show information of only one module and hide information of others (two modules are defaulted to be shown). Menu bar can be hidden by clicking icon . Status bar shows the current time and period for data collection. 44
GREE DC Inverter Side Discharge VRF Ⅱ for North America On the display zone of devices information, you may click to select and view units that need monitoring. 45
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.4.3 Project debugging Click icon of “Debug” on the menu bar and the interface will be switched to project debugging, where auto debugging will be started from up to down and from left to right. Note: Debugging function is only applicable to a single-system network. Click “Start” to enable the debugging function. Then debugging will be started up automatically. indicates that debugging is in progress while indicates debugging is completed. If “OK” button is displayed, it means user needs to judge whether to continue debugging or not. Click icon and relevant information will be shown for your reference. Click “Close” to close the pop-up (For No.3 Confirm ODU Basic Module NO. and No.4 Confirm IDU NO., the current number of units under debugging will be displayed. See the following marked with circle. For No.8 Compr. Preheat 46
GREE DC Inverter Side Discharge VRF Ⅱ for North America Confirmation, the preheat time will be displayed. See the following marked with circle). Icon indicates that there is problem found during debugging. Debugging will not be completed unless problem is solved (after problem is solved, step without “OK” button will switch to the next step automatically, otherwise user needs to click “OK” to continue). Click icon and relevant information detected in this step will be displayed for your reference in order to solve problems. Click “Close” to close the pop-up. During debugging, a click on “Break” can stop debugging. Click “Start” to resume debugging and 47
GREE DC Inverter Side Discharge VRF Ⅱ for North America then debugging will be finished step by step. For No.10 ODU Valves Check Before Startup, there are “Back” and “Skip” buttons. If there is error in this step, you can back to step No.9 and click “OK” to restart debugging on step No.10. If the error in step No.10 is U6 error (valve error alarm), you can click “Skip”. In other cases, “Skip” button is null. Step 11, 13 and 14 are reserved steps. And step 13, 14, 15 and 16 are steps in parallel (only one of the four will be selected according to actual needs). 4.4.4 Control units Click icon of “Setting” on menu bar and select parameter settings, which include “Gateway Settings”, “IDU Settings”, “System Settings”, “Project Number Conflict (In case there is project number conflict in indoor units, other functions will be shielded. Then this parameter needs to be set in order to eliminate the conflict)” and “System Historical Info”. Click the corresponding set and adjust the parameters. 48
GREE DC Inverter Side Discharge VRF Ⅱ for North America Take indoor unit as an example. Click “IDU Settings” and a dialog box will pop up. Tick the indoor units that need setting in the IDU selection zone or you may click “Select All” to select all of them or “Select Inverted” to select none of them. After selection, the current values of the corresponding parameters will be displayed in the zone of settings. Click “Set” and then click in the pop-up dialog box to select values. Click “Set” and then the corresponding order will be sent to units. If setting is successful, it will be displayed at the current values. 49
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.4.5 Other functions (1) Capture screen Click icon of “Capture Screen” to print the interface. If you want to open the interface, click “Open”. 50
GREE DC Inverter Side Discharge VRF Ⅱ for North America (2) Search for database folder Click icon of “Open Data Folder” on the menu bar to open database folder. 51
GREE DC Inverter Side Discharge VRF Ⅱ for North America (3) Conversion of pressure value Click icon of “Others” on the menu bar and then click “Display Settings” to select “High Low Pressure Value” and “Refrigerant Type”. Select “Temperature” and the pressure parameter displayed on the interface will be temperature. Select “Pressure” and the pressure parameter displayed on the pressure interface will be pressure. Refrigerant type will affect the pressure parameter displayed on the interface. 52
GREE DC Inverter Side Discharge VRF Ⅱ for North America (4) Database saving of multiple systems Click icon of “Others” on the menu bar and click “Database Save Settings” to select which system that needs to save database. Because there is a large quantity of data in a network that contains multiple systems, data of only one system can be saved. 53
GREE DC Inverter Side Discharge VRF Ⅱ for North America (5) Change database saving path and rebuild database Change of database saving path and rebuilding of database should be set before the software starts monitoring (see below interface). Click “Change database saving path” and click “Browse” to change the saving path. Click “Rebuild Database” to rebuild the database folder. You can also stop monitoring and turn back to the connection interface to change saving path or rebuild database during monitoring. 54
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.4.6 Usage of USB Converter (1) Usage of converter Gree commissioning software should be connected with CAN interface when converter is used. For air conditioners with a single system, connect D1 and D2 interfaces of the wiring board. For air conditioners with multiple systems, connect G1 and G2 interfaces of the wiring board. Gree monitoring software should be connected with RS485 interface when converter is used. Connect outdoor or indoor units or the mainboard of wired controller according to actual needs. HBS, CAN and RS485 of the converter can be switched by buttons. Press the button “SET” on the converter to realize the conversion among HBS, CAN and RS485 interfaces. You can check the setting through the function LEDs. Notice: If it’s the first time your PC uses Gree USB data converter, in order to prevent Gree USB data converter from being mistaken by your computer as other devices and make sure your mouse can work well, it is necessary to turn off the Serail Enumerator of computer after Gree USB data converter is connected. Below are the steps: Step 1: Right-click ”My Computer” on the desktop and click ”Manage”. 55
GREE DC Inverter Side Discharge VRF Ⅱ for North America Step 2: In the pop-up window, select “Device Manager” in the left column and then find “Port (COM and LPT)” in the right column. Click its . 56
GREE DC Inverter Side Discharge VRF Ⅱ for North America Step 3: Right-click ”USB Serial Port (COM6) and then click ”Properties”. The dialog box of properties will then pop up. Step 4: Then click ”Port Settings” in the dialog box 57
GREE DC Inverter Side Discharge VRF Ⅱ for North America Step 5: Click ”Advanced” and then a new dialog box will pop up. Find the ”Serial Enumerator” in the miscellaneous options and cancel the tick. Click ”OK” to exit. 58
GREE DC Inverter Side Discharge VRF Ⅱ for North America (2) Usage of converter configuring software: When the converter is working, hold the button ”SET” for 5 sec. Function LED will be flickering, indicating that the converter has enter the baud rate setting mode. Then you can use the converter configuring software to set the baud rate of converter. Baud rate supported by the converter (baud rate of air conditioner’s communication interface matches with the baud rate of USB interface automatically): AC is connected with Baud rate of air conditioner interface Baud rate of USB interface CAN 20000/50000 self-adaptive 115200 HBS 57600 38400 RS485 9600 9600 Baud rate look-up table for RS485 interface (unit: bps) RS485 interface 4800 9600 19200 38400 57600 115200 USB interface 4800 9600 19200 38400 57600 115200 Baud rate look-up table for HBS interface (unit: bps) HBS interface 9600 19200 38400 57600 USB interface 4800 9600 19200 38400 Baud rate look-up table of CAN interface (unit: bps) CAN interface 20000 50000 100000 125000 USB interface 115200 115200 256000 256000 Double-click the desktop shortcut. Select the needed communication serial port and language in the “System Settings”. Ex-factory defaulted baud rate: (unit: bps) 59
GREE DC Inverter Side Discharge VRF Ⅱ for North America Select the function that is to be set and the corresponding baud rate (refer to the look-up table) in the “Converter Setup”.Then click “Set”. 60
GREE DC Inverter Side Discharge VRF Ⅱ for North America If you want to restore ex-factory settings, click “Default” to restore the default settings. Click “Get” to get the current setting details of converter. 61
GREE DC Inverter Side Discharge VRF Ⅱ for North America Switchover of Software Languages 62
GREE DC Inverter Side Discharge VRF Ⅱ for North America INSTALLATION 63
GREE DC Inverter Side Discharge VRF Ⅱ for North America INSTALLATION 1 Engineering Installation Preparation and Notice 1.1 Installation notice Personnel and property safety are highly concerned during the entire installation process. Installation implementation must abide by relevant national safety regulations to ensure personnel and property safety. All personnel involved in the installation must attend safety education courses and pass corresponding safety examinations before installation. Only qualified personnel can attend the installation. Relevant personnel must be held responsible for any violation of the regulation. 1.2 Installation key points and importance VRF air conditioning systems use refrigerant, instead of other agent, to directly evaporate to carry out the system heat. High level of pipe cleanness and dryness is required in the system. Since various pipes need to be prepared and laid out onsite, carelessness or maloperation during installation may leave impurities, water, or dust inside refrigerant pipes. If the design fails to meet the requirement, various problems may occur in the system or even lead to system breakdown. Problems that usually occur during installation are as follows: No. Installation Problem Possible Consequence 1 Dust or impurities enter into the refrigeration system. Nitrogen is not filled into the refrigerant pipe or insufficient Nitrogen is filled before welding. 2 3 The vacuum degree in the refrigerant pipe is insufficient. 4 Water enters into the refrigeration system. 5 The refrigerant pipe specifications do not meet the configuration requirements. 6 Refrigerant pipe is blocked. 7 Refrigerant pipe exceeds the limit. The loss in pipe is considerable and the unit energy efficiency decreases, which are harmful for long-term running of the system. 8 Incorrect amount of refrigerant is filled. Pipes are more likely to be blocked; air conditioning performance is reduced; compressor wear is increased or even hinder the normal operation of the system and burn the compressor. Pipes are more likely to be blocked; air conditioning performance is reduced; compressor wear is increased or even hinder the normal operation of the system and burn the compressor. The refrigeration performance is reduced. The system fails to keep normal operation due to frequent protection measures. When the problem getting serious, compressor and other major components can be damaged. Copper plating may appear on the compressor and reduce the compressor efficiency with abnormal noise generated; failures may occur in the system due to ice plug. Smaller configuration specifications can increase the system pipe resistance and affect the cooling performance; larger configuration specifications are waste of materials and can also reduce the cooling performance. The cooling performance is reduced; in certain cases, it may cause long-term compressor operating under overheat conditions; the lubricating effect can be affected and the compressor may be burnt if impurities were mixed with the lubricating oil. The system cannot correctly control the flow allocation; the compressor may be operating under over-heating environment or running when the refrigerant flows back to the compressor. 64
GREE DC Inverter Side Discharge VRF Ⅱ for North America No. Installation Problem Possible Consequence 9 The refrigerant pipe leaks. 10 Water drainage from the condensate water pipe is not smooth. 11 The ratio of slop for condensate water pipe is insufficient or the condensate water pipe is incorrectly connected. 12 The air channel is improperly fixed. The air channel will deform; vibration and noise occur during unit operating. 13 The guide vane of air channel is not reasonably manufactured. 14 The refrigerant pipe or condensate water pipe does not meet the insulation requirement. 15 The installation space for IDU is insufficient. 16 The IDU or the location of the air outlet or return air inlet is not designed reasonably. 17 The ODU is improperly installed. 18 Power cables are incorrectly provided. Unit components may be damaged and potential safety hazard may occur. 19 Control communication cables are incorrectly provided or improperly connected. 20 Control communication cables are not properly protected. The communication cables are short-circuited or disconnected, and the unit cannot be started up due to communication failure. Understand the special requirement (if any) for unit installation before implementation to ensure installation quality. Relevant installers must have corresponding engineering construction qualifications. Special type operators involved in the engineering implementation, such as welders, electricians, and refrigeration mechanics must have relevant operating licenses and are accredited with vocational qualification certification. 2 Installation Materials Selection The materials, equipment and instruments used during air conditioning engineering construction must have certifications and test reports. Products with fireproof requirements must be provided with fireproof inspection certificates and must meet national and relevant compulsory standards. If environmentally-friendly materials are to be used as required by customers, all such materials must meet national environmental protection requirement and be provided with relevant certificates. 2.1 Refrigerant piping (1) Material requirement: Dephosphorization drawing copper pipe for air conditioners; (2) Appearance requirement: The inner and outer surface of pipe should be smooth without pinhole, crack, peeling, blister, inclusion, copper powder, carbon deposition, rust, dirt or severe oxide film, and without obvious scratch, pit, spot and other defects. Insufficient refrigerant circulating in the system decreases the cooling performance of the air conditioner. Long-term operation under such circumstance may cause an overheating compressor or even damage the compressor. Residual water in IDUs can affect the normal operation of the system. The possible water leakage can damage the IDU's decoration. Reverse slop or inconsistent connection of condensate water pipe can hinder the smooth drainage and cause leakage of the IDU. Uneven air quantity allocation reduces the overall performance of the air conditioner. Water can easily condensate and drip to damage the indoor decoration, or even trigger the protection mode of system due to overheating operation. Since there is a lack of space for maintenance and checking, indoor decoration might need to be damaged during such operation. The air outlet or return air inlet may be short-circuited, thus affecting the air conditioning performance. The ODU is difficult to be maintained; unit exhaust is not smooth, which reduces the heat exchanging performance or even prevent the system from normal operation; in addition, the cold and hot air for heat exchange and the noise may annoy people in surrounding areas. The normal communication in the system fails or the control over IDUs and ODUs turn in a mess. 65
GREE DC Inverter Side Discharge VRF Ⅱ for North America (3) Test report: Certifications and quality test reports must be provided. (4) The tensile strength must be at least 240 kgf/mm². (5) Specifications requirement OD (mm/inch) Wall Thickness (mm/inch) Model Φ6.35(1/4) ≥0.8(1/32) 0 Φ9.52(3/8) ≥0.8(1/32) 0 Φ12.70(1/2) ≥0.8(1/32) 0 Φ15.9(5/8) ≥1.0(1/25) 0 Φ19.05(3/4) ≥1.0(1/25) 0 (6) After the inner part of the copper pipe is cleaned and dried, the inlet and outlet must be sealed tightly by using pipe caps, plugs or adhesive tapes. . 2.2 Condensate water pipe (1) Pipes that can be used for air conditioner drainage include: water supplying UPVC pipe, PP-R pipe, PP-C pipe, and HDG steel pipe; (2) All relevant certificates and quality test reports are provided. (3) Requirements for specifications and wall thickness (4) Water supplying UPVC pipe: Φ32mm×2mm，Φ40mm×2mm，Φ50mm×2.5mm; (5) HDG steel pipe: Φ25mm×3.25mm，Φ32mm×3.25mm，Φ40mm×3.5mm，Φ50mm×3.5mm. 2.3 Insulation material (1) Rubber foam insulation material; (2) Flame retardancy level: B1 or higher; (3) Refractoriness: at least 120℃(248℉); (4) The insulation thickness of condensate water pipe: at least 10 mm; (5) When the diameter of copper pipe is equal to or greater than Φ15.9 mm, the thickness of insulation material should be at least 20 mm; when the diameter of copper pipe is less than 15.9 mm, the thickness of insulation material should be at least 15 mm. 2.4 Communication cable and control cable Note: For air conditioning units installed in places with strong electromagnetic interference, shielded wire must be used as the communication cables of the IDU and wired controller, and shielded twisted pairs must be used as the communication cables between IDUs and between the IDU and ODU. Communication cable selection for ODU and IDUs R410A Refrigerant System 66
GREE DC Inverter Side Discharge VRF Ⅱ for North America Total Length of Communication Cable between IDU Unit and IDU Material Type (ODU ) Unit L(m/feet) Light/Ordinary polyvinyl chloride sheathed cord. L≤1000(3280-5/6) ≥2×AWG18 2.5 Power cable Only copper conductors can be used as power cables. The copper conductors must meet relevant national standard and satisfy the carrying capacity of unit. 2.6 Hanger rod and support (1) Hanger rod: M8 or M10; (2) U-steel: 14# or above; (3) Angle steel: 30mm×30mm×3mm or above; (4) Round steel: Φ10mm or above 3 Installation of outdoor unit 3.1 Check before installation (1) Before installation, please check the power cord if it complies with the power supply requirement on the nameplate. Make sure the power supply is safe. (2) This air conditioner must be properly grounded through the receptacle to avoid electric shock. The ground wire shouldn’t be connected with gas pipe, water pipe, lightning arrester or telephone line. (3) Maintain good air circulation to avoid lacking oxygen. (4) Read this manual carefully before installation. 3.2 Selection of installation site (1) Select a location which is strong enough to hold unit’s weight so that unit can stand still and erect. (2) Make sure the unit is not exposed to sun and rain. And the location can resist dust, typhoon and earthquake. (3) Please keep the unit away from inflammable, explosive and corrosive gas or waste gas. (4) Make sure the location has space for heat exchange and maintenance so that unit can operate reliably with good ventilation. (5) ODU and IDU should stay as close as possible to shorten the length of refrigerant pipe and reduce bend angles. (6) Select a location which is out of children’s reach. Keep the unit away from children. Wire size Remarks 1） If the wire diameter is enlarged to 2×AWG16, the total communication line length can reach 1500 m (4921-1/4feet). 2） The cord shall be Circular cord (the cores shall be twisted together). 3） If unit is installed in places with intense magnetic field or strong interference, it is necessary to use shielded wire. 67
GREE DC Inverter Side Discharge VRF Ⅱ for North America 3.3 Carrying and installing outdoor unit When carrying the outdoor unit, hang the unit in four directions with two sufficient ropes. In order to avoid excursion from the center, the angel of ropes must be smaller than 40º during hanging and moving. 3.4 Installation notices In order to ensure proper operation, the selection of installation site must conform to the following principle: (1) The discharged air of outdoor unit will not flow back and there is sufficient space around the unit for maintenance; (2) The installation site must be well ventilated to ensure sufficient air intake and discharge. Make sure there is no obstacle at the air inlet and air outlet. If there is any obstacle, please remove it; (3) The installation site shall be able to withstand the weight of outdoor unit and capable for soundproof and vibration. The air outlet and noise of unit will not affect neighbors; (4) The hanging of outdoor unit must use appointed hanging hole. Pay attention to protect the unit during hanging and installation. Prohibit hitting the sheet metal to avoid rust in the future. (5) Avoid direct sunlight; (6) The rain and condensation water can be drained out smoothly; (7) The outdoor unit will not be embedded by the snow and not affected by garbage and oil smog; (8) The installation of outdoor unit shall adopt rubber damping pad or spring damper to reduce noise and vibration; (9) The installation dimension shall accord with the installation requirement of this manual and the outdoor unit must be fixed at the installation site; (10) The installation shall be done by professional technicians. 3.5 Fixing and damping of unit The outdoor unit shall be fixed with 4 M12 bolts and closely contacted with the foundation. Otherwise, big vibration and noise will be caused. The outdoor unit shall be fixed firmly. The rubber board with thickness over 20mm or corrugated rubber damping pad shall be applied between the unit and foundation. 3.6 Outline dimension and position of installation hole When carrying the outdoor unit, hang the unit in four directions with two sufficient ropes. In order to avoid excursion from the center, the angel of ropes must be smaller than 40º during hanging and moving. 68
GREE DC Inverter Side Discharge VRF Ⅱ for North America Model A B C D E GMV-24WL/C-T(U) GMV-28WL/C-T(U) Fig.1 Unit:mm（inch） 980 (38 6/19) 360 (14 3/16) 790 (31 2/16) 650 (25 3/5) 395 (15 5/9) Fig.2 69
GREE DC Inverter Side Discharge VRF Ⅱ for North America Unit:mm（inch） Model A B C D E GMV-36WL/A-T(U) GMV-48WL/A-T(U) 900 （35 7/16） 340 （13 3/8） 1345 （53） 572 （22 1/2） 378 （15） GMV-60WL/A-T(U) 940 (37) 320 (12 9/16) 1430 (56 1/4) 632 (24 7/8) 350 (14 7/8) GMV-36WL/C-T(U) GMV-48WL/C-T(U) 900 （35 3/8） 340 (13 3/8) 1345 (53) 572 (22 1/2) 378 (15) GMV-60WL/C-T(U) 940 (37) 320 (12 9/16) 1430 (56 1/4) 632 (24 7/8) 350 (14 7/8) 3.7 Installation space requirement If all sides of the ODU (including the top) are surrounded by walls, process according to the following requirements for installation space: Fig.3 Fig.4 4 Installation of Electronic Expansion Valve Assy (unit with external EXV) The EXV of indoor unit is built-in. 5 Installation of Refrigerant Pipeline 5.1Allowable Length and Height Difference of Connection Pipe Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is shown in the figure below: NOTICE! Equivalent length of one Y-type branch is 0.5m(1-5/8feet). 70
GREE DC Inverter Side Discharge VRF Ⅱ for North America Fig.5 Allowable Length and Height Difference of Connection Pipe Piping parameters of GMV-24WL/C-T(U)、GMV-28WL/C-T(U): - Allowable value(m/feet) Fitting pipe Total length (actual length) of fitting pipe 250(820) L1+L2+L3+a+b+c+d Length of farthest fitting pipe (m) Actual length 100(328) L1+L2+L3+d Equivalent length 120(394) From the 1st branch to the farthest indoor pipe 40(131) L2+L3+d ODU at upper side 30(98) - Height difference between ODU and IDU ODU at lower side 30(98) - Height difference between IDUs 10(33) - GMV-36WL/A-T(U) 、GMV-48WL/A-T(U)、GMV-60WL/A-T(U) GMV-36WL/C-T(U) 、GMV-48WL/C-T(U)、GMV-60WLC-T(U): - Allowable value(m/feet) Fitting pipe Total length (actual length) of fitting pipe 300(984) L1+L2+L3+a+b+c+d Length of farthest fitting pipe (m) Actual length 120(394) L1+L2+L3+d Equivalent length 150(492) From the 1st branch to the farthest indoor pipe 40(131) L2+L3+d Height difference between ODU and ODU at upper side 50(164) - IDU ODU at lower side 40(131) - Height difference between IDUs 15(49) - 71
GREE DC Inverter Side Discharge VRF Ⅱ for North America 5.2 Dimension of Pipe (Main Pipe) from ODU to the 1st Indoor Branch Dimension of pipe from ODU to the 1st indoor branch will be determined by the dimension of outdoor connection pipe. Dimension of outdoor connection pipe: Basic module GMV-24WL/C-T(U) Φ15.9 (Φ5/8) GMV-28WL/C-T(U) Φ15.9 (Φ5/8) Φ9.52 (Φ3/8) GMV-36WL/A-T(U) GMV-36WL/C-T(U) Φ9.52 (Φ3/8) GMV-48WL/A-T(U) GMV-48WL/C-T(U) GMV-60WL/A-T(U) GMV-60WL/C-T(U) Fig.6 Pipe dimension Gas pipe (mm/inch) Liquid pipe (mm/inch) Φ9.52 (Φ3/8) Φ15.9 (Φ5/8) Φ15.9 (Φ5/8) Φ9.52 (Φ3/8) Φ19.05 Φ9.52 (Φ3/8) (Φ3/4) 72
GREE DC Inverter Side Discharge VRF Ⅱ for North America 5.3 Selection of Indoor Branches Select indoor branches according to the total capacity of downstream indoor units. if the capacity exceeds that of the outdoor unit, capacity of outdoor unit prevails. Refrigerant system Total capacity of downstream indoor units C (Btu/h) Model Y type branch 5.4 Dimension of Pipe between Indoor Branches Select pipe between indoor branches according to the capacity of downstream indoor units; if the capacity exceeds that of the outdoor unit, capacity of outdoor unit prevails. Fig.7 C< 68200 FQ01A/A 68200≤C≤102400 FQ01B/A 102400<C ≤238800 FQ02/A 238800<C ≤460600 FQ03/A 460600<C FQ04/A Fig.8 73
GREE DC Inverter Side Discharge VRF Ⅱ for North America Total capacity of downstream indoor units C (Btu/h) C ≤19000 Φ12.7 (Φ1/2) 19000<C≤48500 Φ15.9 (Φ5/8) 48500<C≤76400 Φ19.05 5.5 Dimension of Pipe between Indoor Branch and IDU Dimension of pipe between indoor branch and IDU should be consistent with the dimension of indoor pipe. Rated capacity of IDU C(Btu/h) C≤9600 Φ9.52 (Φ3/8) 9600<C≤17000 Φ12.7 (Φ1/2) 17000<C≤48000 Φ15.9 (Φ5/8) 48000<C≤55000 Φ19.05 Φ9.52 (Φ3/8) NOTICE! If the distance between IDU and its nearest branch is over 10m(33feet), then the liquid 55000<C≤96000 Φ22.2 (Φ7/8) pipe of IDU (rated capacity ≤17000Btu/h) shall be enlarged. Pipe (mm/inch) Liquid pipe (mm/inch) Φ6.35 (Φ1/4) Φ9.52 (Φ3/8) Φ9.52 (Φ3/8) (Φ3/4) Fig. 9 Gas pipe (mm/inch) Liquid pipe (mm/inch) Φ6.35 (Φ1/4) Φ6.35 (Φ1/4) Φ9.52 (Φ3/8) Φ9.52 (Φ3/8) (Φ3/4) 74
GREE DC Inverter Side Discharge VRF Ⅱ for North America
6 Installation of Connection Pipe
(1)
Conform to the following principles during pipe connection: Connection pipe should be as short as possible, so is
the height difference between indoor and outdoor units. Keep the number of bends as little as possible. Radius of
curvature should be as large as possible.
(2)
Weld the connection pipe between indoor and outdoor units. Please strictly follow the requirements for welding
process. Rosin joint or pin hole is not allowed.
(3)
When laying the pipe, be careful not to distort it. Radius of bending parts should be over 200mm(8inch). Note that
pipes cannot be repeatedly bent or stretched; otherwise the material will get harder. Do not bend or stretch the
pipe for more than 3 times at the same position.
6.1Flaring Process
(1) Use pipe cutter to cut the connection pipe in case it is unshaped.
(2) Keep the pipe downward in case cutting scraps get into the pipe. Clear away the burrs after
cutting.
(3) Remove the flared nut connecting indoor connection pipe and outdoor unit. Then use flaring
tool to fix the flared nut into the pipe (as shown in Fig.10).
(4) Check if the flared part is flaring evenly and if there is any crack.
6.1.1 Pipe Bending
(1) Reshape the pipe by hand. Be careful not to damage the pipe.
(2) Do not bend the pipe over 90°.
(3) (If pipe is repeatedly bent or stretched, it will get hard and difficult to bend and stretch again.
Therefore, do not bend or stretch the bend for over 3 times.
(4) In case that direct bending will open cracks to the pipe, first use sharp cutter to cut the
insulating layer, as shown in Fig. 12. Do not bend the pipe until it is exposed. When bending is
done, wrap the pipe with insulating layer and then secure it with adhesive tape.
Fig. 11 Fig. 12
Fig. 10
75 GREE DC Inverter Side Discharge VRF Ⅱ for North America 6.1.2 Indoor Pipe Connection (1) Remove pipe cover and pipe plug. (2) Direct the flared part of copper pipe to the center of screwed joint. Twist on the flared nut tightly by hand, as in Fig. 13. (Make sure indoor pipe is correctly connected. Improper location of the center will prevent flared nut from being securely twisted. Thread of nut will get damaged if the flared nut is twisted forcibly.) (3) Use torque wrench to twist on the flared nut tightly until the wrench gives out a click sound. (Hold the handle of wrench and make it at right angle to the pipe. as in Fig. 14 (1) Use sponge to wrap the un-insulated connection pipe and joint. Then tie the sponge tightly with plastic tape. (2) Connection pipe should be supported by a bearer rather than the unit. (3) The bending angle of piping should not be too small; otherwise the piping might have cracks. Please use a pipe bender to bend the pipe. (4) When connecting IDU with connection pipe, do not pull the big and small joints of IDU with force in case the capillary tube or other tubes have cracks and cause leakage. Fig. 13 Fig. 14 Pipe Diameter Tightening Torque 6mm(1/4inch) 15-30N·m(11-22ft.-1b.) 9.5mm(3/8 inch) 35-40N·m(26-29ft.-1b.) 12.7mm(1/2 inch) 45-50N·m(33-37ft.-1b.) 16mm(5/8 inch) 60-65N·m(44-48ft.-1b.) 19.05mm(3/4 inch) 70-75N·m(52-55ft.-1b.) 6.1.3 Outdoor Pipe Connection (1) Pipe connection for GMV-36WL/A-T(U) 、GMV-48WL/A-T(U) 、GMV-36WL/C-T(U) 、 GMV-48WL/C-T(U) Twist the flared nut on the connection pipe of outdoor valves. Twisting method is the same as for indoor pipe connection. According to customer requirement or space limit, outlet pipe can be installed from the front, right or rear side. 76
GREE DC Inverter Side Discharge VRF Ⅱ for North America (2) Pipe connection for GMV-60WL/C-T(U)、GMV-60WL/C-T(U) As shown in Fig.16 and Fig.17, open the outermost soundproof cotton and place a fire barrier between compressor and straight pipe. Use a soldering gun to unsolder straight pipe 1 and straight pipe 2. Install connection pipe 1 and connection pipe 2 to the corresponding position and then seal the apertures with welding rod. First weld the liquid side connection pipe and then weld the gas side connection pipe. During welding, it’s necessary to use wet gauze to wrap up the two cut-off valves. Make sure the flame won’t burn the soundproof cotton or other components. Gas pipe Liquid pipe Flared nut Fig. 15 Fig. 16 77
GREE DC Inverter Side Discharge VRF Ⅱ for North America (3) Twist the flared nut on the connection pipe of outdoor valves. Twisting method is the same as for indoor pipe connection. During engineering installation, the connection pipe inside the unit must be wrapped by insulation sleeve. Below is the piping diagram of GMV-24WL/C-T(U)、GMV-28WL/C-T(U). According to customer requirement or space limit, outlet pipe can be installed from the front, right or rear side. 6.1.4 Installation of Y-type Branch (1) Y-type Branch Fig. 17 Fig. 18 78
GREE DC Inverter Side Discharge VRF Ⅱ for North America (2) Y-type branch has several pipe sections with different dimension, which facilitates to match with various copper pipes. Use pipe cutter to cut in the middle of the pipe section that is of proper dimension and remove burrs as well. See Fig. 20. (3) Y-type branch must be installed vertically or horizontally. Branch shall be isolated by insulating material that can bear 120℃(248℉)or even higher temperature. The attached foam of branch cannot be taken as insulating material. 6.1.5 Thermal Insulation for Pipeline (1) For multi VRF system, every copper pipe should be labeled so as to avoid misconnection. (2) At the branch inlet, leave at least 500mm(19-3/4inch) straight pipe section. (3) Thermal insulation for pipeline 1) To avoid condensate or water leakage on the connection pipe, the gas pipe and liquid pipe must be wrapped with thermal insulating material and adhesive tape for insulation from the air. 2) Joints of indoor and outdoor unit should be wrapped with insulating material and leave no gap between pipe and wall. See Fig. 21. 3) When wrapping the tape, the later circle should cover half of the former one. Don’t wrap the rape too tight, otherwise the insulation effect will be weakened. 4) After wrapping the pipe, apply sealing material to completely seal the hole on the wall. Fig. 19 Fig. 20 Fig. 21 79
GREE DC Inverter Side Discharge VRF Ⅱ for North America (1) Thermal insulating material shall be able bear the pipe temperature. For heat pump unit, liquid pipe should bear 70℃(158℉) or above and gas pipe should bear 120℃(248℉) or above. For cooling only unit, both liquid pipe and gas pipe should bear 70℃(158℉) or above. (2) Thermal insulating material of branches should be the same as that of the pipeline. The attached foam of branches cannot be taken as insulating material. 6.1.6 Support and Protection of Pipeline (1) Support should be made for hanging connection pipe. Distance between each support cannot be over 1m(3-1/4feet). (2) Protection against accidental damage should be made for outdoor pipeline. When pipeline exceeds 1m(3-1/4feet), a pinch board should be added for protection. 6.2 Disassembly of Compressor Feet In order to prevent unit from damage during transportation, 2 metal pieces are fitted to outdoor unit’s compressor feet before unit leaves factory. See fig.22. When installing the unit, metal pieces for transportation must be removed （except for GMV-60WL/A-T(U)）. Then fasten the binding nuts again and wrap back soundproofing cotton.If unit runs with metal pieces fitting on, compressor will shake abnormally and unit’s operating life will be shortened. 6.3 Vacuum Pumping, Refrigerant Adding Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra refrigerant in the outdoor unit for air purging! 6.3.1 Vacuum Pumping (1) Outdoor unit has been charged with refrigerant before delivery. Field-installed connection pipe needs to be charged with additional refrigerant. (2) Confirm whether outdoor liquid and gas valves are closed. (3) Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the outdoor valve, as shown below. Fig. 22 80
GREE DC Inverter Side Discharge VRF Ⅱ for North America Fig. 23 6.3.2 Refrigerant Adding (1) Refrigerant quantity of outdoor unit before delivery: Model GMV-24WL/C-T GMV-28WL/C-T GMV-36WL/A-T GMV-48WL/A-T GMV-60WL/A-T (U) (U) (U) (U) (U) Refrigerant Qty 2.4 (84.7) 2.4 (84.7) 5.0 (176) 5.0 (176) 6.5 (229) (kg/oz) Model GMV-36WL/C-T GMV-48WL/C-T GMV-60WL/C-T (U) - - (U) (U) Refrigerant Qty 3.3 (116) 3.3 (116) 4.6 (162) - - (kg/oz) (1) The refrigerant amount charged before delivery doesn’t include the amount that needs to be added to indoor units and the connection pipeline. (2) Length of connection pipe is decided on site. Therefore the amount of additional refrigerant shall be decided on site according to the dimension and length of field-installed liquid pipe. (3) Record the amount of additional refrigerant for convenience of after-sales service. (2) Calculation of the amount of additional refrigerant Calculation method of the quantity of additional refrigerant (based on liquid pipe) Quantity of additional refrigerant = ∑length of liquid pipe X quantity of additional refrigerant per meter(39-3/8inch) Diameter of Φ22.2 (Φ7/8) Φ19.05 Φ15.9 (Φ5/8) Φ12.7 (Φ1/2) Φ9.52 (Φ3/8) Φ6.35 (Φ1/4) liquid pipe (mm/inch) (Φ3/4) kg/m 0.35 0.25 0.17 0.11 0.054 0.022 oz/inch 0.314 0.224 0.152 0.099 0.048 0.020 NOTICE! Liquid pipe that is within 20m(65-5/8feet) doesn’t need to be added with refrigerant. First confirm that there is no leakage from the system. When compressor is not working, charge additional R410a with specific amount to the unit through the filling opening of the liquid pipe valve of the outdoor unit. If required amount cannot be quickly filled due to pressure increase of the pipe, then set the unit in cooling startup and fill refrigerant from the low pressure check valve of the outdoor unit. 81
GREE DC Inverter Side Discharge VRF Ⅱ for North America (3) Calculation example Fig. 24 IDU: No. IDU ① IDU ② IDU ③ IDU ④ Duct type GMV-ND18PLS/A-T Duct type GMV-ND12PLS/A-T Duct type GMV-ND09PLS/A-T Duct type GMV-ND09PLS/A-T Model (U) Liquid pipe: (U) (U) (U) No. A B C D Pipe size Φ9.52mm (Φ3/8inch) Φ9.52mm (Φ3/8inch) Φ9.52mm (Φ3/8inch) Φ6.35mm (Φ1/4inch) Length 10m (32-3/4feet) 5m (16-3/8feet) 5m (16-3/8feet) 5m (16-3/8feet) No. a b c d Pipe size Φ9.52mm (Φ3/8inch) Φ6.35mm (Φ1/4inch) Φ6.35mm (Φ1/4inch) Φ6.35mm (Φ1/4inch) 1m (3-1/4feet) Total length of each liquid pipe Length 3m (9-3/4feet) 3m (9-3/4feet) 2m (6-5/8feet) Φ9.52：A+B+C+a=10+5+5+3=23m(75-1/2 feet) Φ6.35: D+b+c+d=5+3+2+1=11m(36feet) NOTICE! Liquid pipe that is within 20m(65-5/8feet) doesn’t need to be added with refrigerant. Therefore, the minimum quantity of additional refrigerant = (23-20)×0.054+11×0.022 ＝ 0.404kg(14oz) GMV-24WL/C-T(U) 、 GMV-28WL/C-T(U) 、 GMV-36WL/C-T(U) 、 GMV-48WL/C-T(U) 、 GMV-60WL/C-T(U)： Quantity of additional refrigerant = ∑length of liquid pipe X quantity of additional refrigerant per meter+（quantity of indoor unit -2）×0.3 Diameter of Φ22.2 (Φ7/8) Φ19.05 Φ15.9 (Φ5/8) Φ12.7 (Φ1/2) Φ9.52 (Φ3/8) Φ6.35 (Φ1/4) liquid pipe (mm/inch) (Φ3/4) kg/m 0.35 0.25 0.17 0.11 0.054 0.022 oz/inch 0.314 0.224 0.152 0.099 0.048 0.020 First confirm that there is no leakage from the system. When compressor is not working, charge additional R410A with specific amount to the unit through the filling opening of the liquid pipe valve of the 82
GREE DC Inverter Side Discharge VRF Ⅱ for North America outdoor unit. If required amount cannot be quickly filled due to pressure increase of the pipe, then set the unit in cooling startup and fill refrigerant from the low pressure check valve of the outdoor unit. (4) Calculation example IDU No. IDU ① IDU ② IDU ③ IDU ④ Model Duct type GMV-ND18PLS/A-T(U) Duct type GMV-ND09PLS/A-T(U) Liquid pipe: No. A B C D Pipe size Φ9.52 Φ9.52 Φ9.52 Φ6.35 Length 10m 5m 5m 5m No. a b c d Pipe size Φ9.52 Φ6.35 Φ6.35 Φ6.35 Length 3m 3m 2m 1m Total length of each liquid pipe Φ9.52：A+B+C+a=10+5+5+3=23m Φ6.35: D+b+c+d=5+3+2+1=11m Quantity of indoor unit: 4 sets Therefore, the minimum quantity of additional refrigerant = (23×0.054+11×0.022)+(4-2)×0.3＝ 2.084kg(73.5oz) Duct type GMV-ND12PLS/A-T(U) Duct type GMV-ND09PLS/A-T(U) 83
GREE DC Inverter Side Discharge VRF Ⅱ for North America 7 Electric Wiring (1) All electrical installation must be performed by qualified technicians in accordance with local laws, regulations and this user manual. (2) Use air conditioner specialized power supply and make sure that it is consistent with system’s rated voltage. (3) Do not pull the power cord with force. (4) Caliber of the power cord must be large enough. A damaged power cord or connection wire must be replaced by specialized electrical cords. (5) Connect the unit to specialized grounding device and make sure it is securely grounded. It’s a must to install air switch and current circuit breaker that can cut off the power of the entire system. The air switch should include magnetic trip function and thermal trip function so that system can be protected from short circuit and overload. (6) Air conditioner belongs to class I electrical appliance, so it must be securely grounded. (7) The yellow-green wire inside the unit is a ground wire. Do not cut it off or secure it with tapping screws, otherwise it will lead to electric shock. (8) Power supply must include secure grounding terminal. Do not connect the ground wire to the following: (9) ①Water pipe; ②Gas pipe; ③Drain pipe; ④Other places that are deemed as not secure by professional technicians. 7.1 Wiring Diagram (1) Connection of power cord and communication wire Separate power supply for Indoor and Outdoor Fig.25 Connection of power cord and communication wire for IDU and ODU 84
GREE DC Inverter Side Discharge VRF Ⅱ for North America (2) The wiring diagram for power cord of outdoor unit and communication wire. There are two wiring diagrams for communication wires of indoor/outdoor units and remote monitor: 1) Real line method; 2) Broken line method. Please select it based on the actual installation situation. There are two wiring diagrams for power cord: 1) Real line method; 2) Broken line method. Please select it based on the actual installation situation. 7.2 Power Cable Wire Gauge and Circuit Breaker Selection Model Power supply GMV-24WL/C-T(U) 208/230V~ 60Hz 25 25 21 GMV-28WL/C-T(U) 208/230V~ 60Hz 30 30 21 GMV-36WL/A-T(U) 208/230V~ 60Hz 35 35 31 GMV-48WL/A-T(U) 208/230V~ 60Hz 45 45 34 GMV-60WL/A-T(U) 208/230V~ 60Hz 60 60 39.8 GMV-36WL/C-T(U) 208/230V~ 60Hz 35 35 28.5 GMV-48WL/C-T(U) 208/230V~ 60Hz 40 40 33 GMV-60WL/C-T(U) 208/230V~ 60Hz 40 40 34.5 Max Fuse Size/Fusible Min. Circuit Max Ckt, Bkr Size/Disjoncteur Max. Ampacity Max. (A) (A) (A) 85
GREE DC Inverter Side Discharge VRF Ⅱ for North America 8 Debugging of Unit Caution: ① After the initial installation is finished and the main board of outdoor unit is replaced, it must perform debugging. Otherwise, the unit can’t operate. ② The debugging must be performed by professional person or under the the guide of professional person. 8.1 Preparation for debugging (1) Do not disconnect the power before the installation is finished, (2) All wires for controller and electric wires must be connected correctly and reliably. (3) Check the the fixing ring of the foot of compressor for transportaion is removed. (4) Remove all sundries from the unit, such as metal chips, joint, forceps holder, and so on. (5) Check whether the appearance and pipeline system are damaged during carry or transportation process. (6) Calculate the required added refrigerant-charging volume according to the length of pipe of system and pre-charge the refrigerant. If refrigerant can’t be added any more when the required refrigerant-charging volume hasn’t been reached, record to refrigerant volume which still needs to be added and continue to add refrigerant during run test operation process. Please refer to below run test for the refrigerant-adding stage during run test process. (7) After adding refrigerant, please make sure the valve for outdoor is opened completely. (8) For the convenient of troubleshooting, the unit can’t be connected to the PC which installed with related debugging software and make sure that the the datas in real time of this unit can be inspected by this computer. Please refer to Service Manual for the installation and connection of the bebugging software. (9) Before turn test, please do make sure that the preheat time for compressor is 8h above and touch the compressor to see whether preheat is normal. You can perform run test only after normal preheat. Otherwise, it may damage the compressor. 86
GREE DC Inverter Side Discharge VRF Ⅱ for North America 8.2 Debugging of unit Description of test operation procedures and main board display of ODU GMV-24WL/C-T(U) 、GMV-28WL/C-T(U) 、GMV-36WL/C-T(U) 、GMV-48WL/C-T(U) 、 GMV-60WL/C-T(U)： Description of each stage of debugging progress - Debugging code Code meaning and operation method Progress LED Code Display status A0 ON System is not debugged, hold main board’s SW3 button for 5s to start debugging. 01 ON 2s later, next step starts. 01_Set master unit 02/Ad Display circularly System is allocating addresses. 10s later, display as below: No master indoor unit. Display will be on for 1min, during which master IDU can be set manually. If not, system will set the unit with minimum IP address as the master IDU. 02_ Allocate addresses 02/L7 Display circularly 02/oC Display circularly Allocation is finished. 2s later, next step starts. 03_ Confirm the quantity of ODU 03/01 Display circularly System is confirming. 1s later, next step starts. “00～16” displays the quantity of indoor unit. Confirm the number manually. If the number is not consistent the display one, cut off power of IDU and ODU and check whether communication wire of IDU is correctly connected. After the check, connect power and start debugging from progress 01. If the number is then correct, press main board’s SW3 button to confirm. Then the display is as below: 04/00～16 Display circularly 04_ Confirm the quantity of IDU 04/oC Display circularly System has confirmed the quantity. 2s later, next step starts. “00～16” displays the quantity of indoor unit identified by the system. “CL” means the amount of indoor unit is very little (amount of indoor unit＜2), at this moment, all buttons are invalid, the system cannot enter into the next judgment. 00～16/CL Display circularly Communication between master ODU and driver has error. Check the communication connection of ODU’s main board and drive board. When the error is eliminated, start next step. If power is off during troubleshooting, then restart debugging from progress 01 after power is on. 05/C2 Display circularly Communication of master ODU and driver is normal. Unit will display as in the left for 2s and detect the capacity ratio of IDU and ODU. If the ratio is within range, than next step will start 2s later. If the ratio is out of range, unit will display as below: 05_ Detect ODU’s internal communication and capacity ratio 05/oC Display circularly Rated capacity ratio of IDU is too high. Change the combination way of IDU and ODU to make the ratio within range. And restart debugging from progress 01. 05/CH Display circularly Rated capacity ratio of IDU is too low. Change the combination way of IDU and ODU to make the ratio within range. And restart debugging from progress 01. 05/CL Display circularly Outdoor component’s error. Besides “06”, the other blinking will display the related error code. After errors are eliminated, system will start next step automatically. If power is off during troubleshooting, then restart debugging from progress 01 after power is on. 06/error code Display circularly 06_ Detect outdoor components 06/oC Display circularly System detects no error on outdoor component. 10s later, next step starts. 87
GREE DC Inverter Side Discharge VRF Ⅱ for North America Description of each stage of debugging progress - Debugging code Code meaning and operation method Progress LED Code Display status System detects error on indoor components. XX means the project code of IDU with error, e.g. no.1 IDU has d5 and d6 errors, meanwhile no.3 IDU displays error d6 and d7, then the nixie tube will display “07”, “01”, “d5”, “d6”and “03” circularly. After errors are eliminated, system will start next step automatically. If power is off during troubleshooting, then restart debugging from progress 01 after power is on. 07/XX/error code Display circularly 07_ Detect indoor components If errors occur in IDU which the project code is ≥ 3-digit number, then it will display the 2 big digits of project code first, then the 2 small digits, finally the error code, e.g: L1 error occurs in no.101 IDU, then the nixie tube will display “01”,“01” and “L1” circularly. Display method is the same for several IDUs with multiple errors. 07/XXXX/error code Display circularly 07/oC Display circularly No error on components of IDU. 5s later, next step starts. Preheat time for compressor is less than 8 hours. Display will be as in the left until the preheat time reaches 8 hours. Press main board’s SW3 button to confirm manually that the preheat time has reached 8 hours. Then start next step. (Note: Compressor may get damaged if it is started without 8 hours of preheat time) 08/U0 Display circularly 08_ Confirm preheated compressor 08/oC Display circularly Compressor has been preheated for 8 hours. 2s later, next step starts. System is lack of refrigerant and display will be as in the left. Please cut off power of IDU and ODU and check if there is leakage on pipeline. Solve the leakage problem and complement refrigerant into the unit. Then connect power and restart debugging from progress 01. (Note: Before re-charging refrigerant, unit must be power off in case system starts progress 10 automatically.) 09/U4 Display circularly 09_ Refrigerant judgments before startup 09/oC Display circularly Refrigerant is normal and unit will display as in the left for 2s.Then next step starts. Valves of ODU are being inspected. Compressor will start operation for 2min or so and then stop. The opening and closing status of outdoor valves are as below: 10/on Display circularly Outdoor valves are not fully turned on. Press main board’s SW4 button and display shows “09/OC”. Then check if the gas and liquid valves of ODU are completely open. After confirmation, press the SW4 button again. Then compressor will start running for about 2min to inspect the status of valves. 10_ Status judgments of outdoor valves 10/U6 Display circularly before startup 10/oC Display circularly Valves status is normal. Unit will display as in the left for 2s and then start next step. Ready for units to start debugging. Press main board’s SW3 button to confirm startup of debugging. 2s later, main board will display as below: 12/AP Display circularly 12_ Confirm debugging startup Startup is confirmed. After displaying for 2s, system will choose “15_Cooling debugging” or “16_Heating debugging” according to ambient temperature. If the project requests to add refrigerant but it is not complemented before debugging, then refrigerant can be added in this process through the L-VALVE. 12/AE Display circularly 88
GREE DC Inverter Side Discharge VRF Ⅱ for North America Description of each stage of debugging progress - Debugging code Code meaning and operation method Progress LED Code Display status Debugging for cooling mode. If no malfunction occurs for 50min when compressor is running, then the system is certified as normal. After shutting down the unit for 5s, the system will enter normal standby status. 15/AC Display circularly 15_ Cooling debugging 15/error code Display circularly Malfunction occurs when debugging for cooling mode. Debugging for heating mode. If no malfunction occurs for 50min when compressor is running, then the system is certified as normal. After shutting down the unit for 5s, the system will enter normal standby status. 16/AH Display circularly 16_ Heating debugging 16/error code Display circularly Malfunction occurs when debugging for heating mode. 17_ Debugging finished oF ON The entire unit has finished debugging and under standby-by condition. Debugging procedure for test run, display instruction for indicator on main board of outdoor unit and operation method are as below GMV-36WL/A-T(U)、GMV-48WL/A-T(U) GMV-60WL/A-T(U): Description of each stage of debugging progress - Debugging code Progress code Status code Code meaning and operation method Progress LED1 LED2 LED3 Code Display status Code Display status Code Display status db On 01 On AO On System is not debugged. Hold main board’s SW7 button for 5s to start debugging. Main board will display as said in the left. 2s later, next step starts. 01_ Set master unit db On 01 On OC On db On 02 On Ad Blink System is allocating addresses. 10s later, display as below: No master indoor unit. Display will be on for 1min, during which master IDU can be set manually. If not, system will set the unit with minimum IP address as the master IDU. 02_ Allocate addresses db On 02 On L7 Blink db On 02 On OC On Allocation is finished. 2s later, next step starts. db On 03 On 01 Blink System is confirming. 1s later, next step starts. 03_ Confirm the quantity of ODU db On 03 On OC On System finishes confirmation. 2s later, next step starts. LED3 displays the quantity of indoor unit. Confirm the number manually. If the number is not consistent the display one, cut off power of IDU and ODU and check whether communication wire of IDU is correctly connected. After the check, connect power and start debugging from progress 01. If the number is then correct, press main board’s SW7 button to confirm. Then the display is as below: db On 04 On 01~80 Blink 04_ Confirm the quantity of IDU db On 04 On OC On System has confirmed the quantity. 2s later, next step starts. 89
GREE DC Inverter Side Discharge VRF Ⅱ for North America Description of each stage of debugging progress - Debugging code Progress code Status code Code meaning and operation method Progress LED1 LED2 LED3 Code Display status Code Display status Code Display status Communication between master ODU and driver has error. Check the communication connection of ODU’s main board and drive board. When the error is eliminated, start next step. If power is off during troubleshooting, then restart debugging from progress 01 after power is on. db On 05 On C2 On Communication of master ODU and driver is normal. Unit will display as in the left for 2s and detect the capacity ratio of IDU and ODU. If the ratio is within range, than next step will start 2s later. If the ratio is out of range, unit will display as below: 05_ Detect ODU’s internal communication db On 05 On OC On and capacity ratio Rated capacity ratio of IDU is too high. Change the combination way of IDU and ODU to make the ratio within range. And restart debugging from progress 01. db On 05 On CH On Rated capacity ratio of IDU is too low. Change the combination way of IDU and ODU to make the ratio within range. And restart debugging from progress 01. db On 05 On CL On Outdoor component’s error. LED3 will display the related error code. After errors are eliminated, system will start next step automatically. If power is off during troubleshooting, then restart debugging from progress 01 after power is on. db On 06 On error code On 06_ outdoor components db On 06 On OC On System detects no error on outdoor component. 10s later, next step starts. 90
GREE DC Inverter Side Discharge VRF Ⅱ for North America Description of each stage of debugging progress - Debugging code Progress code Status code Code meaning and operation method Progress LED1 LED2 LED3 Code Display status Code Display status Code Display status System detects error on indoor components. XXXX means the project code of IDU with error. 3s later, related error code will be showed. For instance, if no.1 IDU has d6 and d7 errors, then the LED3 digital tube will show circularly 00,01,d5,d6,07,92,d6,d7 every 2s. After errors are eliminated, system will start next step automatically. If power is off during troubleshooting, then restart debugging from progress 01 after power is on. db On 07 On Error code On 07_ Detect indoor components db On 07 On OC On No error on components of IDU. 2s later, next step starts. Preheat time for compressor is less than 8 hours. Display will be as in the left until the preheat time reaches 8 hours. Press main board’s SW7 button to confirm manually that the preheat time has reached 8 hours. Then start next step. (Note: Compressor may get damaged if it is started without 8 hours of preheat time) db On 08 On UO On 08_ Confirm preheated compressor db On 08 On OC On Compressor has been preheated for 8 hours. 2s later, next step starts. System is lack of refrigerant and display will be as in the left. Please cut off power of IDU and ODU and check if there is leakage on pipeline. Solve the leakage problem and complement refrigerant into the unit. Then connect power and restart debugging from progress 01. (Note: Before re-charging refrigerant, unit must be power off in case system starts progress 10 automatically.) db On 09 On U4 On 09_ Refrigerant judgments before startup db On 09 On OC On Refrigerant is normal and unit will display as in the left for 2s. Then next step starts. 91
GREE DC Inverter Side Discharge VRF Ⅱ for North America Description of each stage of debugging progress - Debugging code Progress code Status code Code meaning and operation method Progress LED1 LED2 LED3 Code Display status Code Display status Code Display status Valves of ODU are being inspected. Compressor will start operation for 2min or so and then stop. The opening and closing status of outdoor valves are as below: db On 10 On ON On Outdoor valves are not fully turned on. Press main board’s SW6 button and display shows “db 09 OC”. Then check if the gas and liquid valves of ODU are completely open. After confirmation, press the SW6 button again. Then compressor will start running for about 2min to inspect the status of valves. 10_ Status judgments of outdoor valves db On 10 On U6 On before startup Valves status is normal. Unit will display as in the left for 2s and then start next step. db On 10 On OC On Ready for units to start debugging. Press main board’s SW7 button to confirm startup of debugging. 2s later, main board will display as below: db On 12 On AP Blink Startup is confirmed. After displaying for 2s, system will choose “15_Cooling debugging” or “16_Heating debugging” according to ambient temperature. If the project requests to add refrigerant but it is not complemented before debugging, then refrigerant can be added in this process through the L-VALVE. 12_ Confirm debugging startup db On 12 On AE On Debugging for cooling mode. If no malfunction occurs for 20min when compressor is running, then system will start progress 17. If malfunction occurs, unit will display as below: db On 15 On AC On 15_ Cooling debugging Malfunction occurs when debugging for cooling mode. After all malfunctions are eliminated, system will start next step. If power is off during troubleshooting, system will start progress 17 automatically when power is resumed. db On 15 On Error code On Debugging for heating mode. If no malfunction occurs for 20min when compressor is running, then system will start progress 17. If malfunction occurs, unit will display as below: db On 16 On AH On 16_ Heating debugging Malfunction occurs when debugging for heating mode. After all malfunctions are eliminated, system will start next step. If power is off during troubleshooting, system will start progress 17 automatically when power is resumed. 17_ Debugging finished 01 On OFF On OFF On The entire unit has finished debugging and under standby-by condition. db On 16 On Error code On 92
GREE DC Inverter Side Discharge VRF Ⅱ for North America 8.3 Parameters reference value for the normal operation of unit No. Debug item Parameter name Unit Reference Outdoor temperature ℃ (℉) - 1 When compressor starts, discharge temp in cool mode is within 70~105℃(158~221℉) and at least 10℃(50℉) higher than the high pressure saturation temp; As for temp in heat mode, it is within 65~90℃(149~194℉) and at least 10℃(50℉) higher than the high pressure saturation temp. 2 Compressor ℃ (℉) discharge temp In cool mode, defrosting temp is 4~10℃(39~50℉) lower than system’s high pressure value; In heat mode, defrosting temp is about 2℃(36℉) different from system’s low pressure value. 3 Defrosting ℃ (℉) temp In cool mode, the normal high pressure value is within 20℃ ~55℃(68~131℉). According to the change of ambient temp and system’s operating capacity, the high pressure value will be 10℃~30℃(50~86℉) higher than ambient temp. The higher ambient temp is, the smaller temp difference is. If ambient temp is 25~35℃(77~95℉) in cool mode, system’s high pressure value will be within 44~53℃(111~127℉). In heat mode, if ambient temp is above -5℃(23℉), system’s high pressure value is within 40~52℃(104~126℉). If ambient temp is low and many IDUs are turned on, the high pressure will be lower. System paramet ODU paramet ers ers 4 System high ℃ (℉) pressure When ambient temp in cool mode is 25~35℃(77~95℉), the low pressure value is 0~8℃(32~46℉). When ambient temp in heat mode is above -5℃(23℉), the low pressure value is -15~8℃(5~46℉). 5 System low ℃ (℉) pressure In cool mode, the thermal electronic expansion valve remains 480PLS. In heat mode, the adjustable opening angle of EXV is 60~480PLS. 6 Opening angle of thermal EXV PLS GMV-24WL/C-T(U) GMV-28WL/C-T(U) Changes in 16Hz~74Hz. GMV-36WL/A-T(U) GMV-48WL/A-T(U) GMV-36WL/C-T(U) GMV-48WL/C-T(U) Compressor’s operating freq HZ 7 GMV-60WL/A-T(U) GMV-60WL/C-T(U) 8 Compressor’s A When compressor works normally, the current is no more than22.6A. operating System paramet ODU paramet current When ambient temp is below 35℃(95℉), IPM temp is lower than 80℃(176℉) and the highest temp won’t be above 95℃ (203℉). 9 Compressor’s ers ers ℃ (℉) IPM temp GMV-24WL/C-T(U) GMV-28WL/C-T(U) 10 Fan motor’s operating freq HZ GMV-36WL/A-T(U) GMV-48WL/A-T(U) GMV-36WL/C-T(U) GMV-48WL/C-T(U) 11 93 Changes in 10Hz~80Hz. Changes in 16Hz~80Hz Changes in 0~37Hz according to system’s pressure. Changes in 0~49Hz according to system’s pressure.
GREE DC Inverter Side Discharge VRF Ⅱ for North America No. Debug item Parameter name Unit Reference 12 GMV-60WL/A-T(U) GMV-60WL/C-T(U) IDU ambient ℃ (℉) - 13 temp According to ambient temp, for a same IDU in cool mode, the inlet temp will be 1℃~7℃(34~45℉) lower than the outlet temp, and 4~9℃(39~48℉) higher than the low pressure value. For a same IDU in heat mode, the inlet temp will be 10℃ ~20℃(50~68℉) lower than the outlet temp. 14 Indoor heat exchanger’s ℃ (℉) inlet temp GMV-24WL/C-T(U) GMV-28WL/C-T(U) 15 IDU paramet ers GMV-36WL/A-T(U) GMV-48WL/A-T(U) GMV-36WL/C-T(U) GMV-48WL/C-T(U) Opening angle 16 of indoor EXV PLS 17 GMV-60WL/A-T(U) GMV-60WL/C-T(U) 18 Communication Communicatio n data - Number of IDUs detected by software is the same with the actual number. No communication error. parameters Indoor unit can drain water out completely and smoothly. Condensate pipe has no backward slope of water; Water of outdoor unit can be drained completely through drainage pipe. No water drop from unit base. 19 Drainage system - - 20 Others - - Compressor and indoor/outdoor fan motor do not have strange noise. Unit can operate normally. 94 Changes in 0~40Hz according to system’s pressure. In cool mode, the opening angle of indoor EXV varies within 70~480PLS. In heat mode, the opening angle of indoor EXV varies within 70~480PLS. In cool mode, the opening angle of indoor EXV varies within 70~480PLS. In heat mode, the opening angle of indoor EXV varies within 70~480PLS. In cool mode, the opening angle of indoor EXV varies within 70~480PLS. In heat mode, the opening angle of indoor EXV varies within 40~480PLS.
GREE DC Inverter Side Discharge VRF Ⅱ for North America MAINTENANCE 95
GREE DC Inverter Side Discharge VRF Ⅱ for North America MAINTENANCE 1 Malfunction List 1.1 Malfunction list for the wired controller Display code Content Display code Content Display code Content Wrong number of indoor unit for one-to-more indoor L0 Malfunction of d8 Malfunction of water indoor unit L9 temperature sensor unit L1 Indoor fan protection LA Wrong series for one-to-more indoor unit d9 Malfunction of jumper cap L2 E-heater protection LH Alarming due to bad air quality dA Abnormal address for indoor unit The indoor unit model can’t L3 Water overflow dH Abnormal PCB for wired protection LC match with outdoor unit controller model L4 Overcurrent protection d1 Poor indoor PCB dC Abnormal code-dialing setting of capacity L5 Freeze prevention protection d3 Malfunction of ambient temperature sensor dL Malfunction of air exhause temperature sensor L6 Mode shock d4 Malfunction of entry tube temperature sensor dE Malfunction of indoor C02 sensor L7 No main indoor unit d6 Malfunction of exit tube temperature sensor C0 Communication malfunction L8 Insufficient power supply d7 Malfunction of humidity sensor AJ Clean alarming for filter db Special code: engineering debugging code 1.2 Status display table for indicators on main board of outdoor unit Definition: LED1: It displays “00” for hot water mode as for DC Inverter Side Discharge VRF LED2: It displays “AC” for AC mode, cooling and cooling OFF mode for indoor unit, and displays “AH” for heating and heating OFF mode for indoor unit LED3: It displays on or off status of compressor and malfunction code. It displays “ON” when the compressor is operating and “OFF” when the compressor stops operation. When there’s malfunction for the unit, it will display corresponding malfunction code; when there’re multiple malfunctions, the malfunction codes will be displayed in turn. Display code table of outdoor unit is as below: Content symbol Division 0 1 2 3 4 5 symbol Auxiliary Freeze prevention L Malfunction of Protection of Water-full protection Over-current heating protection IDU (uniform) indoor fan protection protection Indoor Malfunction Malfunction of entry-tube Malfunction d - Indoor PCB is of ambient temperature of middle temperature poor - temperature sensor sensor sensor 96
GREE DC Inverter Side Discharge VRF Ⅱ for North America Content symbol Division 0 1 2 3 4 5 symbol High discharge temperature protection of Discharge low-temperature E Malfunction of ODU (uniform) High-pressure Low-pressure - protection protection protection compressor Malfunction of discharge temperature Malfunction Malfunction of F Main board of of low-pressure high-pressure - - ODU is poor sensor of compressor sensor sensor 1 Over-current protection of compressor 1 J - - - - - Outdoor Malfunction of Malfunction Malfunction Malfunction of outdoor ambient temperature of liquid temperature of gas temperature defrosting temperature b - - sensor of sub-cooler sensor of sub-cooler sensor 1 sensor Voltage protection of driving board Driving board of compressor Reset protection of malfunction of driving board of Over-current protection of Drive PFC protection of P operates abnormally driving module of compressor compressor power of compressor inverter compressor compressor (uniform) (uniform) (uniform) Wrong address for Wrong setting of Preheat time of ODU’s capacity U compressor is - - - driving board of compressor code/jumper insufficient cap Communication Debugging Communication malfunction between main Alarm because project code malfunction between IDU, ODU and IDU’s wired controller Malfunction C - control and - of lack of inverter compressor IDU of IDU is inconsistent driver Inquiry of compressor A Unit waiting for - Defrosting Oil-return Online test debugging operation parameters Status Setting of upper SE operation Setting of defrosting limit of IDU/ODU n setting of - - - system cycle K1 capacity distribution ratio 97
GREE DC Inverter Side Discharge VRF Ⅱ for North America Content symbol Division 0 1 2 3 4 5 symbol Setting for general unit and high Anti-ice temperature setting under Upper limit of Upper limit of correction sensible heat unit (0 correction Shield setting for compressor value for target low pressure is value for target low pressure is q - represents low temperature frequency general,1 represents condition Z0 Z2 high sensible heat) Content symbol Division 6 7 8 9 A H symbol Alarm due to 1-to-more: IDU series 1-to-more: number of IDU bad air L Mode shock No main IDU Power supply quality (Fresh air is insufficient is inconsistent is inconsistent unit) Malfunction of Web address of Malfunction PCB of wired exit-tube temperature - Malfunction of d of humidity controller is jumper cap IDU is abnormal sensor abnormal sensor Protection Gas-mixing protection of High pressure ratio protection due to abnormal J - - - Indoor 4-way valve of system pressure Malfunction of Malfunction Malfunction of heat exchanger inlet temp of outlet temp sensor of gas-liquid Clock of system is abnormal b sensor of gas-liquid separator - - temperature sensor separator Malfunction High-voltage protection of compressor’s Drive IPM Drive IPM high Desynchronizing of drive temperature module protection of temperature protection of protection of P - inverter compressor sensor of compressor drive DC bus compressor compressor bar Alarm because Short-circuit malfunction of Malfunction of valve is abnormal U - pipe-line for - - IDU ODU Debugging Rated capacity is C - - - - - too high EU AA level A Heat pump function setting Quiet mode Vacuum pump mode IPLV test EER test Heating setting mode Status Engineering Parameter n Malfunction inquiry of unit No. inquiry - Heat pump Heating only inquiry of of indoor unit unit unit unit 98
GREE DC Inverter Side Discharge VRF Ⅱ for North America Content symbol Division 6 7 8 9 A H symbol Low temperature Setting for engineering Select Centigrade Heat recover main body protection correction Defrost mode q ability correction conducts or Fahrenheit setting status heating value for discharge factor θ Content symbol Division symbol C L E F J P Models for IDU and ODU are not L - - - - - matched Malfunction of Abnormal setting for Malfunction of air-outlet temperature sensor(Fresh indoor CO2 sensor (fresh d - - - capacity button air unit) air unit) Drop protection of discharge temperature E - - - - - sensor of compressor 1 Indoor F - - - - - Malfunction of DC motor J - High-pressure protection - - - - Drive current Drive charging Low-voltage protection of compressor’s detection Failure startup of AC current protection of Phase-lacking circuit malfunction circuit malfunction P of inverter compressor inverter compressor inverter compressor drive DC bus of compressor of compressor bar Drive current Drive charging detection Low-voltage protection of fan’s drive DC Failure startup of inverter fan AC current protection of circuit malfunction Phase-lacking H circuit malfunction of inverter fan inverter fan of fan bus bar of fan Setting of main IDU is Charging of refrigerant is Wrong button-dial U - - - successful invalid Debugging Malfunction Malfunction Malfunction Malfunction of lack of main control Rated capacity of multiple main control of multiple main wired of multiple main wired C is too low - unit units controllers controllers Debugging confirmation for startup of Charging refrigerant automatically Charging refrigerant Fan Alarm for cleaning filter A Cooling Status manually unit n Cooling only unit - Negative sign code Fan model - - 99
GREE DC Inverter Side Discharge VRF Ⅱ for North America Content symbol Division symbol C L E F J P The main Dual heat source water body conducts Static pressure EVI operation Compulsory cooling mode q - setting status setting emptying cooling Content symbol Division symbol U b d n y Communication malfunction between IDU and the receiving lamp Overflow distribution of IP Debugging C - - - address plate Emergency A Long-distance emergency stop stop of operation Limit operation - - Status Working mode of compressor q - - - - heating zone 2 Troubleshooting Troubleshooting principle (1) Communication malfunction Communication malfunction NO Check whether indoor unit and Energize indoor unit and outdoor unit is power supplied outdoor unit YES NO Check whether the communication wire between indoor unit and outdoor unit is Connect the communication wire for indoor unit and outdoor unit correctly correct YES NO Measure whether the communication wire is in Replace communication wire normal 100
GREE DC Inverter Side Discharge VRF Ⅱ for North America (2) High pressure protection High pressure protection NO YES Measure whether Replace main board of outdoor Measure whether the high pressure the pressure switch is normal is too high with manometer unit YES NO Replace pressure switch YES Charge refrigerant according to the volume on nameplate; check whether there is leakage for the Check whether the refrigerant- charging volume is superfluous system YES NO Open the valve Check whether gas valve and liquid valve are open completely completely YES NO Cover the panel of Check whether the panel of outdoor unit is covered and sealed outdoor unit well well YES NO E liminate obstacles Check whether the air can blow smoothly at the heat exchanger of and sundries indoor unit and outdoor unit YES NO Measure the circumstances of fan motor and signal input Check whether the indoor fan and outdoor fan can operate YES NO Measure the circumstances of swing Check whether the indoor swing blade is open completely motor and signal input YES NO Check whether the electronic expansive value for indoor unit and outdoor unit can operate normally Engage valve and coil YES NO Mainly check the air inlet and air outlet connecting indoor unit and main pipe, and the expansive valve for indoor unit and outdoor unit. Replace electronic Blockage for system pipeline expansion valve, dry strainer,ect. 101
GREE DC Inverter Side Discharge VRF Ⅱ for North America (3) Low-pressure protection Low pressure protection NO Measure whether the pressure switch YES Replace main board of outdoor Measure whether the low pressure is too low with manometer unit is normal NO Replace pressure switch yes YES Charge refrigerant according to the volume Check whether the refrigerant- charging volume is insufficient on nameplate; check whether there is leakage for the system NO NO Open the valve Check whether gas valve and liquid valve are open completely completely YES NO Cover the panel Check whether the panel of outdoor unit is covered and sealed of outdoor unit well well YES NO Eliminate obstacles and Check whether the air can blow smoothly at the heat exchanger of sundries indoor unit and outdoor unit YES NO Measure the circumstances of fan motor and signal input Check whether the indoor fan and outdoor fan can operate YES NO Measure the circumstances of swing Check whether the indoor swing blade is open completely motor and signal input YES NO Engage valve and Check whether the electronic expansive value for indoor unit and coil outdoor unit can operate normally YES NO Mainly check the air inlet and air outlet connecting indoor unit and main pipe, and the expansive valve for indoor unit and outdoor unit. Blockage for system pipeline Replace electronic expansion valve, dry strainer,ect. 102
GREE DC Inverter Side Discharge VRF Ⅱ for North America (4) Discharge temperature protection Discharge temperature protection YES Measure whether the NO Replace main board of resistance valve for temperature sensor is Check whether the discharge temperature for compressor is outdoor unit reached to 113℃ normal NO YES Replace discharge temperature sensor YES Charge refrigerant according to the volume on nameplate; check Check whether the refrigerant- charging volume is insufficient whether there is leakage for the system NO NO Check whether the gas valve Open the valve and liquid valve are open completely completely YES NO Check whether the panel of outdoor unit is covered and Cover the panel for outdoor unit well sealed well YES NO Check whether the air can blow smoothly at the heat exchanger Eliminate obstacles and sundries of indoor unit and outdoor unit YES NO Measure the circumstances of fan motor and signal input Check whether the indoor fan and outdoor fan can operate YES NO Measure the circumstances Check whether the indoor swing of swing motor and signal blade is open completely input YES NO Check whether the electronic expansion valve for indoor unit Engage valve and coil and outdoor unit can operate normally YES NO Mainly check the air inlet and air outlet connecting indoor unit and main pipe, and the expansive valve for indoor unit Blockage for system pipeline and outdoor unit. Replace electronic expansion valve, dry strainer,ect. 103
GREE DC Inverter Side Discharge VRF Ⅱ for North America (5) Mafunction of temperature sensor (6) Malfunction of sensor (7) Unit and main board can’t be energized Malfunction of temperature sensor NO Conform whether the Whether the plug of temperature is connected with the plug of main board plug is connected correctly correctly YES NO Replace temperature Measure whether resistance value of temperature sensor is in the normal range sensor YES Replace main board Malfunction of sensor NO Confirm whether the Check whether plug of sensor is plug is connected connected with socket correctly correctly YES YES Replace pressure Measure whether the output value (DC voltage) for socket of main board of outdoor unit is normal sensor NO Replace main board of outdoor unit Unit and main board can’t be energized Check whether it’s NO the malfunction of Measure whether voltage between pole L and pole N of wiring board is 220V power supply for wiring board YES NO Replace filter Check whether there’s power supply for filter board board YES Replace main board of outdoor unit 104
GREE DC Inverter Side Discharge VRF Ⅱ for North America (8) Failure start-up Failure start-up for consecutive 6 times YES NO Work normally after replacing main board? Replace compressor and Work normally liquid gas separator (9) Reset protection for drive module of compressor, drive PFC protection for compressor, malfunction of drive temperature sensor for compressor, circuit malfunction of drive current detection for compressor Wired controller displays P0 LED3 dual-8 nixie tube displays P3, P4, P7 or PC Replace main board Work normally (10) Drive IPM overtemperature protection for compressor Wired controller displays P0 LED3 dual-8 nixie tube displays P8 yes no Whether two IPM module is tightened? Replace main Tighten module board Work normally 105
GREE DC Inverter Side Discharge VRF Ⅱ for North America (11) Desynchronizing protection for inverter compressor (12) Failure startup for inverter compressor Wired controller displays P0 LED3 dual-8 nixie tube displays P9 Whether the sequence of wire for compressor is no Adjust the sequence of wire for compressor correct? yes yes Connect the wires Whether the wiring terminal of compressor for compressor is tightly loose? no yes Replace the main board. Work normally? no Replace compressor Work normally Wired controller displays P0 LED3 dual-8 nixie tube displays PJ yes Replace main board. Work normally? no Replace compressor Work normally 106
GREE DC Inverter Side Discharge VRF Ⅱ for North America (13) Loop malfunction of driven charging for compressor (14) Malfunction of memory chip for inverter compressor Wired controller displays P0 LED3 dual-8 nixie tube displays PF yes no Check whether the wires for PFC induction is correct/ Reinsert the wires for PFC Replace main board Work normally Wire controller displays P0 LED3 dual-8 nixie tube displays PA Whether the memory chip is inserted inversely yes Adjust the memory chip no Whether the memory chip is yes Insert the memory chip tightly loose？ no Replace main board Work normally 107
GREE DC Inverter Side Discharge VRF Ⅱ for North America (15) Overcurrent protection for inverter compressor, IPM module protection, phase-lacking of inverter compressor (16) High pressure protection for driven DC bus bar of compressor, low pressure protection for driven DC bus bar of compressor Wired controller displays P1 LED3 dual-8 nixie tube displays P5、P6 or PE no Whether the sequence of wire for compressor is Adjust the sequence of wire for compressor correct? yes yes Whether the wiring terminal of Connect the wires of compressor is compressor tightly loose? no yes Replace main board. Work normally? no Replace compressor Work normally Wired controller displays P2 LED3 nixie tube displays PH or PL no yes Whether the power voltage is 185V~264V？ yes Replace main board. Work normally? no Close Upon power off Replace compressor Work normally and ask authorized personnel 108
GREE DC Inverter Side Discharge VRF Ⅱ for North America (17) AC current protection for inverter compressor Wired controller displays E0 LED3 dual-8 nixie tube displays PP Replace main board Work normally (18) Communication malfunction between main contoller and driver of inverter compressor Wired controlled displays C2 LED3 dual-8 nixie tube displays C2 yes no Check whether the main control CPU board is inserted well? Replace main Insert the CPU board board well Work normally 109
GREE DC Inverter Side Discharge VRF Ⅱ for North America 3 Power Distribution of Unit 3.1 Power distribution of unit The control logical relationship among parts inside the electric box of unit is showed by the mongline diagram (CAD source file). The main loop is showed by bold line (line width: 1mm); the control loop is showed by slim line (line width: 0.2mm). Power wiring board Filter plate Drive board Compressor Main control board 4-way valve, by-pass valve, electric heating belt and control signal （Bold line is the power line and the slim line is the control line） 3.2 Main electric parts Name Photo Function introduction Filter plate IPM Module Fan Temperature sensor, electric expansion valve, high pressure and low pressure switch and so on It main effect is to eliminate the interference of power for protecting unit’s anti-interference capability and prevent the interference to other electric appliances. There are three complemental IGBT tube inside the IPM module. They are controlled by PWM wave and then bring the pressure of DC bus bar to different stator windings of compressor at different stage, and then generate current on the stator. Meanwhile, magnetic field will be generated on the stator winding, and push the operation of rotor and then drive compressor to operate. 110
GREE DC Inverter Side Discharge VRF Ⅱ for North America Name Photo Function introduction PFC module 3.3 Circuit diagram GMV-24WL/C-T(U)、GMV-28WL/C-T(U) Four diodes and two MOS pipe are intergrated inside the PFC module. It will transform AC input power into DC power. Meanwhile, MOS pipe is controlled by PWM wave. Pressure will be increased by induction. 111
GREE DC Inverter Side Discharge VRF Ⅱ for North America GMV-36WL/A-T(U)、GMV-48WL/A-T(U) GMV-36WL/C-T(U)、GMV-48WL/C-T(U) 112
GREE DC Inverter Side Discharge VRF Ⅱ for North America GMV-60WL/A-T(U) 4 Removal of Parts GMV-60WL/C-T(U) 113
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.1 Key parts Photo Name Function Core part of air conditioning system. It sucks low temperature and low pressure gas, compress it to high temperature and high pressure gas, and then discharge it. compressor Throttling device. It transforms high pressure refrigerant liquid into low pressure steam. Electronic expansion valve 4-way valve It changes the flow direction of refrigerant for switching between cooling and heating. It stays between discharge outlet of compressor and inlet of condenser. It used for separating the lubricant oil of compressor when the high temperature and high pressure refrigerant gas is discharged from the compressor. Oil separator It stays between outlet of evaporator and suction ouitlet of compressor. It used for separating low temperature and low pressure refrigerant. Vapour liquid separator 114
GREE DC Inverter Side Discharge VRF Ⅱ for North America Photo Name Function It used for storing the superfluous high pressure refrigerant liquid during cooling process. High pressure liquid storage tank Solenoid valve -- It used for connecting indoor unit and outdoor unit, and used for maintenance and installation. Cut-off valve 4.2 Removal of key parts 4.2.1 GMV-24WL/C-T(U), GMV-28WL/C-T(U) , series unit Removal operation for panel Remark: Before removing the panel, please make sure that the unit is disconected with the power Process Photo Operation Instruction ● Loose the screws fixing the top cover with screwdriver ● Hold the top cover upwards and then put it on the floor flatly 1.Remove top cover 115
GREE DC Inverter Side Discharge VRF Ⅱ for North America Remark: Before removing the panel, please make sure that the unit is disconected with the power Process Photo Operation Instruction 2. Remove front side plate sub-assy 3. Remove front panel and grille 4. Remove left side plate and rear side plate Removal operation for panel ● Loose the screw fixing the front side plate with screwdriver ● Hold the front side plate upwards and then put it on the floor flatly ● Loose the screws fixing the front panel and grille with screwdriver ● Put the front panel and grille on the floor flatly ● Loose screws fixing left side plate and rear side plate with screwdriver ● remove the rear side plate 116
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for blade Remark: Before removing the motor, please make sure that the unit is disconnected with the power. Process Photo Operation Instruction 1. Remove grille ● Loose screws fixing the panel with screwdriver ● Then remove the grille 2. Remove blade 3. Remove motor 4. Install motor ● Replace the motor, tighten screws with screwdriver and then connect the power cord of motor ● Loosen nuts fixing the blade with wrench ● Then remove the blade and put it on the floor flatly ● Loose screws fixing the motor with screwdriver ● then remove the power cord of motor ● Take out the damaged motor 117
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for blade Remark: Before removing the motor, please make sure that the unit is disconnected with the power. Process Photo Operation Instruction 5. Assemble unit Removal operation of compressor Remark: Before removing the compressor, please make sure that there’s no refrigerant inside the pipeline and the power is disconnected. Process Photo Operation Instruction 1. Remove wiring cover of compressor 2. Disconnect compressor and connected pipeline ● Assemble the unit in the the converse sequence ● Loose screws fiixng the compressor with screwdriver ● Then pull out the power cord Note: When removing the power cord, make marks for different color power cords and corresponding wiring terminals for wrong terminal. ● Weld suction pipe and discharge pipe of compressor ● then pull out the connection pipe from the compressor Note: During welding process, do not let the flame burn out other parts. 118
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation of compressor Remark: Before removing the compressor, please make sure that there’s no refrigerant inside the pipeline and the power is disconnected. Process Photo Operation Instruction 3. Loose nuts fixing the foot of compressor 4. Remove the compressor from the chassis 5. Fix the new compressor at the chassis 6. Connect suction pipe and discharge pipe of copressor and pipeline of system again Twist off the nuts for compressor with wrench ● Take out the compressor and replace it Note: When replacing the compressor, do not damage nearby pipelines and other parts After replacing the compresor, fix the nuts at the bottom of compressor Weld the connection pipe of compressor, connect the pipeline and compressor Note: During welding process, do not let flame burn out other parts 119
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation of compressor Remark: Before removing the compressor, please make sure that there’s no refrigerant inside the pipeline and the power is disconnected. Process Photo Operation Instruction 7. Connect the power cord of compressor well 8. Check and open the upper cover plate Removal operation for 4-way valve Remark: Before removing the 4-way valve, please make sure that there’s no refrigerant inside the pipeline of system and then power is disconnected. Process Photo Operation Instruction 1.Disconnect the coil of 4-way valve from the 4-way valve ● Loose screws fixing the power cord with screwdriver ● conenct the power cord well again Note: When connecting the power cord, make marks for different color power cords and corresponding wiring terminals. ●Check whether the pipeline is connected well ●Check whetehr all parts and connection wires are connected well ●If there’s no problem after checking, install front and rear cover plates. ●Remove the coil of 4-way valve at first 120
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for 4-way valve Remark: Before removing the 4-way valve, please make sure that there’s no refrigerant inside the pipeline of system and then power is disconnected. Process Photo Operation Instruction 2.Disconnect the 4-way valve and connection pipeline 3. Replace 4-way valve 4. Replace 4-way valve ● Weld those 4 connection spots on 4-way valve, and then pull out the connection pipe Note: During welding process, do not let the flae burn out other parts ● Replace 4-way valve Note: During welding process, do not let the flame burn out other parts ● Weld the connection position between 4-way valve and pipeline Note: During welding process, do not let flame burn out other parts 121
GREE DC Inverter Side Discharge VRF Ⅱ for North America Remival operation for eletronic expansion valve Remark: Before removing the electronic expansion valve, please make sure that there’s no refrigerant in th pipeline of system and the power is disconnected Process Photo Operation Instruction 1. Disconnec the electronic expansion valve from the pipeline 2. Take out the electronic expansion valve and replace it 3. Replace electronic expansion valve ● Remove the coil of electroc expansion valve at first ● Weld the connection pipe for expansion valve, and then pull out the connection pipe Note： During welding process, do not let flame burn out other parts ●Take out the electronic expansion valve and replace it ● Weld the connection pipe of electronic expansion valve ● Inistall the coil of electronic expansion valve Note； During welding process, do not let the flame burn out other parts 122
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation of gas liquid separator Remark: Before removing the gas liquid separator, please make sure that there’s no refrigerant inside the pipeline of system and disconnect the power Process Photo Operation Instruction 1.Disconnect inlet pipe and exit pipe of gas liquid separator 2. Replace gas liquid separator 3. Replace gas liquid separator ● Weld those two connection spots on the gas liquid separator and then pull out the connection pipe Note: During welding process, do not let flame burn out other parts ● Loose 4 screws with screwdriver ● Replace gas lliquid separator ● Weld the pipe connected with gas liquid separator ● Fix the screws at the base of gas liquid separator well again Note: During welding process, do not let flame burn out other parts 123
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for plate heat exchanger Remark: Before removing the plate heat exchanger, please make sure that there’s no refrigerant inside the pipeline of system and disconnect the power Process Photo Operation Instruction 1. Remove top cover, back plate and right plate 2.Remove the bracket of plate heat exchanger 3. Weld those 4 connection spots on the plate heat exchanger, and then pull out plate heat exchanger 4. Replace new plate heat exchanger ●Twist off the nuts fixing the plate, remove front plate firstly, then remove right plate, and remove back plate finally ● Twist off the nuts fixing the bracket of plate heat exchanger ●Weld those 4 connection spots on the plate heat exchanger, and then pull out the connection pipe. Note: During welding process, do not let flame burn out other parts ● Weld the pipe connected with plate heat exchanger Note: During welding process, do not let flame burn out other parts 124
GREE DC Inverter Side Discharge VRF Ⅱ for North America 4.2.2 GMV-36WL/A-T(U), GMV-48WL/A-T(U), GMV-60WL/A-T(U) GMV-36WL/C-T(U), GMV-48WL/C-T(U), GMV-60WL/C-T(U) , series unit Removal operation for panel Remark: Before removing the panel, please make sure that the unit is disconected with the power Process Photo Operation Instruction 1.Remove top cover 2. Remove front side plate sub-assy 3. Remove front panel and grille Loose the screws fixing the top cover with screwdriver Hold the top cover upwards and then put it on the floor flatly Loose the screw fixing the front side plate with screwdriver Hold the front side plate upwards and then put it on the floor flatly Loose the screws fixing the front panel and grille with screwdriver Put the front panel and grille on the floor flatly 125
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for panel Remark: Before removing the panel, please make sure that the unit is disconected with the power Process Photo Operation Instruction 4. Remove left side plate and rear side plate Removal operation for blade Remark: Before removing the motor, please make sure that the unit is disconnected with the power. Process Photo Operation Instruction 1. Remove grille 2. Remove blade Loose screws fixing left side plate and rear side plate with screwdriver remove the rear side plate Loose screws fixing the panel with screwdriver Then remove the grille Loosen nuts fixing the blade with wrench Then remove the blade and put it on the floor flatly 126
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for blade Remark: Before removing the motor, please make sure that the unit is disconnected with the power. Process Photo Operation Instruction 3. Remove motor 4. Install motor 5. Assemble unit Loose screws fixing the motor with screwdriver then remove the power cord of motor Take out the damaged motor Replace the motor, tighten screws with screwdriver and then connect teh power cord of motor Assemble the unit in the the converse sequence 127
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation of compressor Remark: Before removing the compressor, please make sure that there’s no refrigerant inside the pipeline and the power is disconnected. Process Photo Operation Instruction 1. Remove wiring cover of compressor 2. Disconnect compressor and connected pipeline 3. Loose nuts fixing the foot of compressor Loose screws fiixng the compressor with screwdriver Then pull out the power cord Note: When removing the power cord, make marks for different color power cords and corresponding wiring terminals for wrong terminal. Weld suction pipe and discharge pipe of compressor then pull out the connection pipe from the compressor Note: During welding process, do not let the flame burn out other parts. Twist off the nuts for compressor with wrench 128
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation of compressor Remark: Before removing the compressor, please make sure that there’s no refrigerant inside the pipeline and the power is disconnected. Process Photo Operation Instruction 4. Remove the compressor from chassis 5. Fix the new compressor at the chassis 6. Connect suction pipe and discharge pipe of copressor and pipeline of system again Take out the compressor and replace it Note: When replacing the compressor, do not damage nearby pipelines and other parts After replacing the compresor, fix the nuts at the bottom of compressor Weld the connection pipe of compressor, connect the pipeline and compressor Note: During welding process, do not let flame burn out other parts 129
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation of compressor Remark: Before removing the compressor, please make sure that there’s no refrigerant inside the pipeline and the power is disconnected. Process Photo Operation Instruction 7. Connect the power cord of compressor well 8. Check and open the upper cover plate Removal operation for 4-way valve Remark: Before removing the 4-way valve, please make sure that there’s no refrigerant inside the pipeline of system and then power is disconnected. Process Photo Operation Instruction 1.Disconnect the coil of 4-way valve from the 4-way valve Loose screws fixing the power cord with screwdriver conenct the power cord well again Note: When connecting the power cord, make marks for different color power cords and corresponding wiring terminals. Check whether the pipeline is connected well Check whetehr all parts and connection wires are connected well If there’s no problem after checking, install front and rear cover plates. Remove the coil of 4-way valve at first 130
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for 4-way valve Remark: Before removing the 4-way valve, please make sure that there’s no refrigerant inside the pipeline of system and then power is disconnected. Process Photo Operation Instruction 2.Disconnect the 4-way valve and connection pipeline 3. Replace 4-way valve 4. Replace 4-way valve Weld those 4 connection spots on 4-way valve, and then pull out the connection pipe Note: During welding process, do not let the flae burn out other parts Replace 4-way valve Note: During welding process, do not let the flame burn out other parts Weld the connection position between 4-way valve and pipeline Note: During welding process, do not let flame burn out other parts 131
GREE DC Inverter Side Discharge VRF Ⅱ for North America Remival operation for eletronic expansion valve Remark: Before removing the electronic expansion valve, please make sure that there’s no refrigerant in th pipeline of system and the power is disconnected Process Photo Operation Instruction 1. Disconnec the electronic expansion valve from the pipeline 2. Take out the electronic expansion valve and replace it 3. Replace electronic expansion valve Remove the coil of electroc expansion valve at first Weld the connection pipe for expansion valve, and then pull out the connection pipe Note： During welding process, do not let flame burn out other parts Take out the electronic expansion valve and replace it Weld the connection pipe of electronic expansion valve Inistall the coil of electronic expansion valve Note； During welding process, do not let the flame burn out other parts 132
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation of gas liquid separator Remark: Before removing the gas liquid separator, please make sure that there’s no refrigerant inside the pipeline of system and disconnect the power Process Photo Operation Instruction 1.Disconnect inlet pipe and exit pipe of gas liquid separator 2. Replace gas liquid separator 3. Replace gas liquid separator Weld those two connection spots on the gas liquid separator and then pull out the connection pipe Note: During welding process, do not let flame burn out other parts Loose 4 screws with screwdriver Replace gas lliquid separator Weld the pipe connected with gas liquid separator Fix the screws at the base of gas liquid separator well again Note: During welding process, do not let flame burn out other parts 133
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for plate heat exchanger Remark: Before removing the plate heat exchanger, please make sure that there’s no refrigerant inside the pipeline of system and disconnect the power Process Photo Operation Instruction 1. Twist off two nuts fixing the plate heat exchanger with wrench 2.Disconnect inlet pipe and outlet pipe of plate heat exchanger 3. Replace plate heat exchanger Twist off two nuts fixing the plate heat exchanger with wrench Weld those 4 connection spots on the plate heat exchanger, and then pull out the connection pipe. Note: During welding process, do not let flame burn out other parts Replace plate heat exchanger 134
GREE DC Inverter Side Discharge VRF Ⅱ for North America Removal operation for plate heat exchanger Remark: Before removing the plate heat exchanger, please make sure that there’s no refrigerant inside the pipeline of system and disconnect the power Process Photo Operation Instruction 4. Replace gas liquid separator 5 Common Maintenance 5.1 Vacuum drying for the system 5.1.1 Selection requirement for the vaccum pump Do not use different vacuum pump for vaccum-pumping for different refrigerant system； The final vacuum for the vacuum pump should reach -0.1Mpa; The air discharge volume for the vacuum pump should reach 4L/S above; The precision of vacuum pup should reach 0.02mmHg above; The system vacuum pump for R410A must be with check valve. 5.1.2 Operation procedure and notices for Vacuum drying (1) 1Operation procedure a) Before vacuum-pumping, please confirm that the cut-off valve for gas pipe and liquid pipe is at off status; b) Use charging conduct pipe to connect the governing value and vacuum heat pump to the detection joint of gas valve and liquid valve; c) After vacuum-pumping for 4h, check whether the vacuum degree is reached to -0.1MPa or above; If not, there may be gas leakage. Please perform the leakage inspection again. If there’s no gas leakage, please vacuum pump for another 2h. d) If the required vaccum degree can’t be satisfied after vacuum-pumping for two times, there are water inside the pipeline. Please drain out the water by the method of vaccum damage. The detailed method: charge 0.05MPa nitrogen into the pipeline, vacuum pump for 2h and then keep the cacuum for 1h. If -0.1 MPa vaccum degree still can’t be reached, repeat this operation unitl the water is drained out completely. (2) After the vacuum pump is finished, turn off the valve of governing valve and stop vacuum pump and keep it for 1h. Please confirm that the pressure of governing valve hasn’t been increased. Weld the pipe connected with plate heat exchanger Note: During welding process, do not let flame burn out other parts 135
GREE DC Inverter Side Discharge VRF Ⅱ for North America a) Vacuum pump for the gas pipe and liquid valve at the same time; b) When turn off the vacuum pump to stop vacuum-pumping, please turn off the valve at first and then de-energize the vacuum pump; c) Keep the vacuum pump for 2h and confirm that the pressure of vacuum meter hasn’t been increased. 6 Exploded View of Unit and Parts’ List Exploed view for outdoor unit and parts’ list (1) Model: GMV-24WL/C-T(U)、GMV-28WL/C-T(U) Exploded view 1 2 3 61 60 59 58 57 56 63 66 64 65 62 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 43 44 41 42 46 45 39 40 37 38 136 55 54 53 52 51 50 49 48 47 22
GREE DC Inverter Side Discharge VRF Ⅱ for North America Parts list GMV-24WL/C-T(U) GMV-28WL/C-T(U) NO. Name of Part Product Code CN850W0740 Product Code CN850W0750 1 Compressor and Fittings '00900100019501 1 '00900100019501 1 2 Compressor Overload Protector(External) '00180030 1 '00180030 1 3 Compressor Overload Protector(External) '00183032 1 '00183032 1 4 Compressor Overload Protector(External) '00183031 1 '00183031 1 5 Compressor Gasket '009012000004 3 '009012000004 3 6 Chassis Sub-assy '017000000148P 1 '017000000148P 1 7 Chassis '01284100101 1 '01284100101 1 8 Electrical Heater '765100047 1 '765100047 1 9 Electric Heater(Compressor) '7651873215 1 '7651873215 1 10 Condenser Assy '011002060314 1 '011002060314 1 11 Sensor Insert '42020063 1 '42020063 1 12 Cable Cross Loop '76510021 1 '76510021 1 13 Silencer '07444105 1 '07444105 1 14 Pressure Protect Switch '46020006 1 '46020006 1 15 Strainer '07415200002 1 '07415200002 1 16 Sensor Insert '42020063 1 '42020063 1 17 Gas-liquid Separator '07422809 1 '07422809 1 18 Nozzle for Adding Freon '06120012 1 '06120012 1 19 Temp Sensor Sleeving '05212423 1 '05212423 1 20 Joint '06652200001 1 '06652200001 1 21 fusible plug '06332200001 1 '06332200001 1 22 Sensor Insert '42020063 1 '42020063 1 23 Pressure Sensor '322101002 1 '322101002 1 24 Plate-type Heat Exchanger Assy '00904100017 1 '00904100017 1 25 Nut with Washer '70310012 2 '70310012 2 26 Plate-type Heat Exchanger Assy '007023000006 1 '007023000006 1 27 Electronic Expansion Valve '07334390 1 '07334390 1 28 Discharge Charge Valve '07133771 1 '07133771 1 29 Plate-type Heat Exchanger '00904100003 1 '00904100003 1 30 Temp Sensor Sleeving '05212423 1 '05212423 1 31 Current Divider '07223431 1 '07223431 1 32 Electronic Expansion Valve '07334447 1 '07334447 1 33 Sensor Insert '42020063 1 '42020063 1 34 Electric Expand Valve Fitting '4304413205 1 '4304413205 1 35 Electric Expand Valve Fitting '4304413220 1 '4304413220 1 137
GREE DC Inverter Side Discharge VRF Ⅱ for North America GMV-24WL/C-T(U) GMV-28WL/C-T(U) NO. Name of Part Product Code CN850W0740 Product Code CN850W0750 36 Connection pipe sub-assy '05024100604 1 '05024100604 1 37 Nozzle for Adding Freon '06120014 1 '06120014 1 38 Pressure Sensor '322101032 1 '322101032 1 39 Valve Support Assy '01804100306 1 '01804100306 1 40 Cut-off valve sub-assy(small valve) '07334100042 1 '07334100042 1 41 Cut off Valve '07130209 1 '07130209 1 42 Strainer '07212001 1 '07212001 1 43 Cut-off valve sub-assy(big valve) '07334100044 1 '07334100044 1 44 Cut off Valve '07334100016 1 '07334100016 1 45 Bidirection Strainer '07210044 1 '07210044 1 46 4-Way Valve Assy '030152000272 1 '030152000272 1 47 4-way Valve '4300008201 1 '4300008201 1 48 Temp Sensor Sleeving '05212423 3 '05212423 3 49 Sensor Insert '42020063 3 '42020063 3 50 Magnet Coil (electromagnetic valve) '4304410018903 1 '4304410018903 1 51 Capillary sub-assy '030006000255 1 '030006000255 1 52 Electromagnetic Valve '43000054 1 '43000054 1 53 Magnet Coil (electromagnetic valve) '4304410018901 1 '4304410018901 1 54 Motor Support Sub-Assy '01804100309 1 '01804100309 1 55 Brushless DC Motor '1570280000401 1 '1570280000401 1 56 Axial Flow Fan '10434100005 1 '10434100005 1 57 Left Side Plate '01314100043P 1 '01314100043P 1 58 Left Side Plate '01314100043 1 '01314100043 1 59 Right Side Plate Sub-Assy '01314100109 1 '01314100109 1 60 Right Side Plate '01314100046P 1 '01314100046P 1 61 Gland Bush '26904100134 2 '26904100134 2 62 Wire conduit '26904100132 2 '26904100132 2 63 Electric Box Assy '100002062449 1 '100002062449 1 64 Bolt '70210051 1 '70210051 1 65 Radiator '430034000014 1 '430034000014 1 66 Main Board '300027000235 1 '300027000235 1 67 Relay '44020444 1 '44020444 1 68 Main Board '300027000570 1 '300027000570 1 69 XY capacitor '33020201 2 '33020201 2 70 Fuse '46010055 1 '46010055 1 71 Terminal Board '422000000015 1 '422000000015 1 72 Terminal Board '422000060004 1 '422000060004 1 73 Insulation GasketC '70410523 1 '70410523 1 74 Wire Clamp '71010102 1 '71010102 1 75 Wire Clamp '71010103 1 '71010103 1 76 Magnetic Ring '49010118 3 '49010118 3 138
GREE DC Inverter Side Discharge VRF Ⅱ for North America
GMV-24WL/C-T(U)
GMV-28WL/C-T(U)
NO.
Name of Part
Product Code
CN850W0740
Product Code
CN850W0750
77
Cable Cross Loop
'26900000008
1
'26900000008
1
78
Pass Wire Ring
Sub-assy
'76614102
1
'76614102
1
79
Cable Cross Loop
'76512008
1
'76512008
1
80
Filter Sub-Assy
'111001000086
1
'111001000086
1
81
Jumper
'4202021905
1
'4202021905
1
82
Electric Box Cover
'012077060106
1
'012077060106
1
83
Cabinet
'01514100007P
1
'01514100007P
1
84
Cabinet
'01514100007
1
'01514100007
1
85
Diversion Circle
'10474100003
1
'10474100003
1
86
Front Grill
'01572800003
1
'01572800003
1
87
Rear Side Plate
'01314100045P
1
'01314100045P
1
88
Handle
'26235253
1
'26235253
1
89
Front Side Plate
'01314100044P
1
'01314100044P
1
90
Front Side Plate
'01314100044
1
'01314100044
1
91
Handle
'26235253
1
'26235253
1
92
Coping
'01264100027P
1
'01264100027P
1
93
Rear Grill
'01574100010
1
'01574100010
1
94
Sensor Sub-assy
'39008000060G
1
'39008000060G
1
95
Temperature Sensor
Support
'26905202
1
'26905202
1
96
Heat Insulator
'12128748
13
'12128748
13
97
"Pipe Connection Nut
(""D"" shape) "
'06320004
2
'06320004
2
98
Corrugated Pipe
'05015408
1
'05015408
1
99
Drainage hole Cap
'06813401
3
'06813401
3
100
Drainage Joint
'06123401
1
'06123401
1
139 GREE DC Inverter Side Discharge VRF Ⅱ for North America (2) Model: GMV-36WL/A-T(U)、GMV-48WL/A-T(U) 、GMV-60WL/A-T(U) Exploded view Parts list NO. Name of Part 1 Coping 01264100008P 1 01264100047P 1 2 Inductance Assy 01394100050 1 / / 3 Inductance 43120122 1 43128000015 1 4 Electric Box Assy 01394100427 1 100002000013 1 5 Main Board 30228000005 1 30221000029 1 6 Radiator 49018000013 1 49018000097 1 7 Filter Board 30228000006 1 30228000006 1 8 Main Board 30226000045 1 30226000045_KZ0 016 1 9 Terminal Board 42018000026 1 42018000026 1 10 Terminal Board 420111453 1 420111453 1 GMV-36WL/A-T(U)/ GMV-48WL/A-T(U) GMV-60WL/A-T(U) Product Code CN850W0230/ CN850W0220 Product Code CN850W0270 49018000098 1 140
GREE DC Inverter Side Discharge VRF Ⅱ for North America GMV-36WL/A-T(U)/ GMV-48WL/A-T(U) GMV-60WL/A-T(U) NO. Name of Part Product Code CN850W0230/ CN850W0220 Product Code CN850W0270 11 Left Side Plate 01314100013P 1 01314100084 1 12 Clapboard 01244100005 1 01244100029 1 13 Fan Motor 15704115 1 1570280206 1 14 Sensor Sub-Assy 39008000061G 1 39008000061G 1 15 Fan Motor 1570411501 1 1570280201 1 16 Front Grill 01574100009 2 01572800003 2 17 Cabinet 01514100002P 1 01514100013P 1 18 Front Side Plate 01314100012P 1 01314100082P 1 19 Handle 26235253 1 26904100016 1 20 Front Connection Board 01344100002P 1 01314100082P 1 21 Diversion Circle 10474100001 2 10474100003 2 22 Axial Flow Fan 1043410000301 2 10434100006 2 23 Chassis Assy 01194100061 1 209058000001 1 24 Motor Support Sub-Assy 01805200260 1 017012000006 1 25 Pressure Protect Switch 4602000902 1 4602000902 1 26 Discharge Tube Sub-Assy 04534100057 1 030013000052 1 27 Silencer 07444105 1 / 28 Oil Separator 07424105 1 07424105 1 29 Compressor and Fittings 0020410000102 1 00209400005 1 30 Electrical Heater(Compressor) 765152128 1 765152128 1 31 Cut off Valve 07330000002 1 07334100011 1 32 Strainer 07212001 1 0721200102 1 33 Gas-liquid Separator 07424100014 1 07424140 1 34 Electrical Heater 765100047 1 765100047 1 35 Capillary Sub-Assy 04004100023 1 030006000087 1 36 Strainer 07415200002 2 07415200002 3 37 Electromagnetic Valve 43000054 1 43000054 1 38 Magnet Coil 4304000417 1 4304000416 1 39 Right Connection Board 01344100003P 1 01344100059P 1 40 Rear Side Plate Sub-Assy 01314100011P 1 01314100083P 1 41 Sensing Device 322101002 1 322101002 1 42 Sensor (High Pressure) 322101032 1 322101034 1 43 Gas By-pass Sub- Assy 04534100056 1 030082000003 1 44 Cut off Valve 07330000002 1 07334100054 1 45 Plate-type Heat Exchanger Assy 00904100013 1 007023000001 1 46 Discharge Charge 07133771 1 07133771 1 141
GREE DC Inverter Side Discharge VRF Ⅱ for North America GMV-36WL/A-T(U)/ GMV-48WL/A-T(U) GMV-60WL/A-T(U) NO. Name of Part Product Code CN850W0230/ CN850W0220 Product Code CN850W0270 Valve 47 Electronic Expansion Valve 07334447 1 43044100172 1 48 Electric Expand Valve Fitting 4304413205 1 4304413220 1 49 Electronic Expansion Valve 07334390 1 43044100173 1 50 Electric Expand Valve Fitting 4304413220 1 4304413205 1 51 Low Pressure Survey Valve Sub-Assy 07334100067 1 07334100063 1 52 Cut off Valve 07130239 1 07130239 1 53 Strainer 07212121 1 07415200002 1 54 Silencer 07245012 1 / / 55 Connection Pipe Sub-Assy 04064100002 1 030072000008 1 56 Strainer 07210037 1 07212403 1 57 One way Valve 07130118 1 / / 58 4-way Valve 43000338 1 43000338 1 59 Magnet Coil 4300040029 1 4300040094 1 60 Magnet Coil 4304000406 1 / / 61 Nozzle for Adding Freon 06120012 1 0612001202 2 62 Condenser Assy 01124100143 1 000100000001 1 63 Rear Grill 01574100004 1 01574100011 1 142
GREE DC Inverter Side Discharge VRF Ⅱ for North America (3) Model: GMV-36WL/C-T(U)、GMV-48WL/C-T(U) Exploded view Parts list NO. Name of Part 1 Front Grill 01314100013 1 2 Diversion Circle 06123401 1 3 Cabinet 390002060018 1 4 Handle 765152128 1 5 Front Side Plate 765100047 1 6 7 Axial Flow Fan Brushless DC Motor 8 Brushless DC Motor 01264100008 1 9 Chassis 100002068219 1 10 Oil Separator 300027060121 1 11 Strainer 300027060346 1 12 Compressor and Fittings 42200000001501 1 13 Compressor Gasket 422000060004 1 14 Pressure Sensor 300020000003 1 GMV-36WL/C-T(U) GMV-48WL/C-T(U) Product Code CN850W1070 CN850W1080 43120122 1 01394100545 1 143
GREE DC Inverter Side Discharge VRF Ⅱ for North America NO. Name of Part 15 Drainage hole Cap 4304000492 1 16 Pressure Protect Switch 4300040094 1 17 Electromagnetic Valve 4304413205 1 18 Pressure Sensor 4304413220 1 19 Electronic Expansion Valve 05015408 1 20 Discharge Charge Valve 01574100004 1 21 Plate-type Heat Exchanger Assy 01100206067601 1 22 Electronic Expansion Valve 0721212101 1 23 Strainer 07225016 1 24 Cut off Valve 3/8 43000338 1 25 Rear Side Plate 07224803 1 26 Cut off Valve 07334100016 1 27 Filter 01314100014 1 28 4-way Valve 07130209 1 29 Gas-liquid Separator 07212001 1 30 Strainer 07334447 1 31 Condenser Assy 007023000004 1 32 Rear Grill 071015000002 1 33 Corrugated Pipe 43044100173 1 34 Electric Expand Valve Fitting 430044000016 1 35 Electric Expand Valve Fitting 43000054 1 36 4 Way Valve Coil 4602000902 1 37 Magnet Coil 06813401 3 38 Filter Board 43004400001501 1 39 Terminal Board 009012000013 3 40 Terminal Board 009001060077 1 41 Main Board 07225088 2 42 Main Board 07424105 1 43 Electric Box Assy 01284100149 1 44 Coping 1570410001306 1 45 Inductance Box Assy 1570410001305 1 46 Inductance 1043410000301 2 47 Electrical Heater 01314100012 1 48 Electrical Heater 2690410001603 2 49 Sensor Sub-assy 01514100002 1 50 Drainage Joint 10474100001 2 51 Left Side Plate 016004060002 2 GMV-36WL/C-T(U) GMV-48WL/C-T(U) Product Code CN850W1070 CN850W1080 144
GREE DC Inverter Side Discharge VRF Ⅱ for North America (4) Model: GMV-60WL/C-T(U) Exploded view Parts list NO. Name of Part 1 Coping 4304413220 1 2 Electric Box Assy 4304000453 1 3 PFC Inductance 4300040094 1 4 Filter Board 4304413205 1 5 Drive Board 26113009 1 6 Main Board 39008000061G 1 7 Terminal Board 765152128 1 8 Terminal Board 765100047 1 9 Left Side Plate 01574100011 1 10 Brushless DC Motor 07212403 1 11 Pressure Sensor 4602000902 1 12 Gas-liquid Separator 07424105 1 13 Nozzle for Adding Freon 010002000003 1 14 Strainer 322101034 1 15 Axial Flow Fan 43044100173 1 GMV-60WL/C-T(U) Product Code CN850W1090 145
GREE DC Inverter Side Discharge VRF Ⅱ for North America NO. Name of Part 16 Front Grill 07133771 1 17 Diversion Circle 01314100083 1 18 Handle 00904100005 1 19 Front Side Plate 0721200102 1 20 Cabinet 43044100172 1 21 Brushless DC Motor 035222000004 1 22 Chassis Sub-assy 030072060154 1 23 Electromagnetic Valve 07212402 1 24 Cut off Valve 07334100054 1 25 Cut-off valve 76715005 3 26 Strainer 00209400005 1 27 Compressor and Fittings 07415200002 1 28 Drainage hole Cap 07130239 1 29 Cut off valve 07334100011 1 30 Strainer 43003091 1 31 4-Way Valve Sub-Assy 017000000005 1 32 fusible plug 15010406001302 1 33 Electronic Expansion Valve 01514100013 1 34 Strainer 01314100082 1 35 Plate-type Heat Exchanger 2690410001603 1 36 Rear Side Plate 10474100003 2 37 Discharge Charge Valve 01572800003 2 38 Electronic Expansion Valve 10434100006 2 39 Pressure Sensor 0721650101 1 40 Condenser Sub-Assy 0612001202 1 41 Oil Separator 07424140 1 42 Pressure Protect Switch 322101002 1 43 Strainer 150104060013 1 44 Rear Grill 01314100084P 1 45 Electrical Heater 422000060004 1 46 Electrical Heater 42200006000304 1 47 Sensor Sub-assy 300027060346 1 48 Drainage Joint 300078060095 1 49 Electric Expand Valve Fitting 300020000003 1 50 4 Way Valve Coil 43128000015 1 51 Magnet Coil 100002068220 1 52 Electric Expand Valve Fitting 01264100047P 1 GMV-60WL/C-T(U) Product Code CN850W1090 146
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI 519070 Add: West Jinji Rd, Qianshan Zhuhai, Guangdong, China Tel: (+86-756)8522218 Fax: (+86-756)8669426 E-mail: gree@gree.com.cn www.gree.com JF00302320