Gree GMV Series Owner's Manual
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Gree GMV Series Owner's Manual

Gree GMV Series Owner's Manual

Heat recovery dc inverter vrf
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GMV Heat Recovery DC Inverter VRF
Model:
GMV-VQ72WM/C-F(U)
GMV-VQ96WM/C-F(U)
GMV-VQ120WM/C-F(U)

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  • Page 1 GMV Heat Recovery DC Inverter VRF Model: GMV-VQ72WM/C-F(U) GMV-VQ96WM/C-F(U) GMV-VQ120WM/C-F(U)
  • Page 2 Preface Gree DC Inverter Multi VRF System, with the most advanced technologies in the world, uses eco- friendly refrigerant R410A as its cooling medium. For correct installation and operation, please read this manual carefully. This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
  • Page 3 Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: (1) Damage the product due to improper use or misuse of the product; (2) Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer;...

  • Page 4: Table Of Contents

    Contents 1 Safety Notices (Please be sure to abide them) ··············································· 1 2 Product Introduction ··················································································· 4 2.1 Product Features ····························································································· 4 2.2 Combinations of Indoor and Outdoor Units ···························································· 4 2.3 Names of Main Parts ························································································ 4 2.4 The Range of Production Working Temperature ······················································ 4 2.5 Standard Parts ································································································...

  • Page 5: Safety Notices (Please Be Sure To Abide Them)

    (11) If anything abnormal happens (such as burning smell), please power off the unit and cut off the main power supply, and then immediately contact Gree appointed service center. If abnormality keeps going, the unit might be damaged and lead to electric shock or fire.
  • Page 6 GMV Heat Recovery DC Inverter VRF (14) Make sure the unit can be earthed properly and soundly after plugging into the socket so as to avoid electric shock. Please do not connect the ground wire to gas pipe, water pipe, lightning rod or telephone line.
  • Page 7 (35) Never allow children to play around or on the top of the unit, otherwise injury may happen. (36) User is not allowed to repair the unit. Fault service may cause electric shock or fire accidents. Please contact Gree appointed service center for help. (37) Do not expose the unit to the moist or corrosive circumstances.

  • Page 8: Product Introduction

    2 Product Introduction 2.1 Product Features Gree Heat Recovery DC Inverter VRF System adopts inverter compressor technology. By changing the displacement of compressor, stepless capacity regulation can be realized, and indoor units within a same system can operate in cooling or heating mode in the meantime. This system can be widely used in commercial and working area and is especially applicable to places with big load change.

  • Page 9: Standard Parts

    GMV Heat Recovery DC Inverter VRF not within the warranty range. 2.5 Standard Parts Please use the following standard parts supplied by Gree. Parts for Outdoor Unit Number Name Picture Quantity Remarks Owner's Manual — Must be connected to Wiring (match...

  • Page 10: Outdoor Unit Installation

    GMV Heat Recovery DC Inverter VRF 3.2 Outdoor Unit Installation 3.2.1 Product Size Drawing The product photos are only for reference. Please refer to the actual product. Outline and Physical Dimension of GMV-VQ72WM/C-F(U), GMV-VQ96WM/C-F(U), GMV- VQ120WM/C-F(U) unit. Unit: mm(inch) Fig.3.2.1...
  • Page 11 GMV Heat Recovery DC Inverter VRF Unit: mm(inch) GMV-VQ72WM/C- GMV-VQ96WM/C- GMV-VQ120WM/C- Name Remark F(U) F(U) F(U) Low pressure Φ19.05(3/4) Φ22.2(7/8) Φ28.6(1-1/8) ① gas pipe For Heat High pressure Recovery Φ15.9(5/8) Φ19.05(3/4) Φ22.2(7/8) ② gas pipe Mode Liquid pipe Φ9.52(3/8) Φ9.52(3/8) Φ12.7(1/2) ③...
  • Page 12 GMV Heat Recovery DC Inverter VRF 3.2.2.1 Take seasonal wind into consideration when installing the outdoor unit (1) Anti-monsoon installation requirements for unit not connecting exhaust duct. When the exhaust duct is not connected, a protective cover should be installed according to the seasonal wind circumstances.
  • Page 13 GMV Heat Recovery DC Inverter VRF 3.2.2.2 Take snow into consideration when installing the outdoor unit When the unit is installed, the snow should be taken into consideration for the height of the base. NOTICE! The photo is only for reference. Please refer to the installation locale. Fig.3.2.4...
  • Page 14 GMV Heat Recovery DC Inverter VRF 3.2.3 Installation Space Requirements The installation space of the unit should consider the maintenance space of the unit and the ventilation of the unit. Select an installation method according to the actual situation. Fig.3.2.5 Unit: mm(inch) Status A+B+C+D...
  • Page 15 GMV Heat Recovery DC Inverter VRF Status A+B+C+D a≥300(11-13/16) b≥100(3-15/16) c≥100(3-15/16) Status 4 — d≥100(3-15/16) e≥200(7-7/8) f≥500(19-11/16) a≥300(11-13/16) b≥500(19-11/16) c≥100(3-15/16) Status 5 — d≥500(19-11/16) e≥200(7-7/8) f≥900(35-7/16) Notes: (1) The installation space shown above is based on the cooling operation when the outdoor temperature is 35℃(95℉).
  • Page 16 GMV Heat Recovery DC Inverter VRF Unit: mm(inch) Fig.3.2.7 (6) If there is an obstacle above the unit, install the unit as follows. In principle, the top of the unit is required to be more than 3000mm(118-1/8 inch)from the top wall. If the space around the front, back, left and right sides of the unit is open space, the top of the unit is required to be 1500mm (59-1/16 inch) or more from the top wall, as shown in the fig.
  • Page 17 GMV Heat Recovery DC Inverter VRF 3.2.5 Diagram of installation foundation The concrete foundation of the ODU must be strong enough. Ensure that the drainage is smooth and that the ground drainage or floor drainage is not affected. Requirements on the concrete foundation are as follows: (1) The concrete foundation must be flat and have enough rigidity and strength to undertake the unit’s weight during running.

  • Page 18: Pipeline Design

    GMV Heat Recovery DC Inverter VRF 3.3 Pipeline Design 3.3.1 Notices for Pipeline Design (1) Air-conditioning installation should not damage the load-bearing structure and decorative style of the building. (2) Air-conditioning pipes should be laid along the bottom of the beam. If the pipes meet at the same elevation, they should be treated as follows: 1) Drain pipes, ducts and pressure pipes avoid gravity pipes.
  • Page 19 GMV Heat Recovery DC Inverter VRF 3.3.3 Allowable pipe length and height difference among indoor and outdoor units Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is shown in the figure below. 3.3.3.1 Allowable pipe length and height of Heat Recovery System Fig.3.3.1 L10: Length from the first branch to the farthest IDU;...
  • Page 20 GMV Heat Recovery DC Inverter VRF NOTICE! (1) Normally, the pipe length from the first indoor branch to the farthest indoor unit is 40m. Under the following conditions, the length can reach 90m(295-1/4ft.). 1) Actual length of pipe in total: L1+(L2+L3+L4+…+L8)×2+a11+a12+b21+…+d21+d22≤1000m(3280-3/4ft.);...
  • Page 21 GMV Heat Recovery DC Inverter VRF 3.3.3.2 Allowable pipe length and height of Heat Pump System Fig.3.3.2 L10: Length from the first branch to the farthest IDU; L11: Length from the first branch to the nearest IDU; Equivalent length of branch of IDU is 0.5m(1-3/4ft.). —...
  • Page 22 GMV Heat Recovery DC Inverter VRF L11≤40m(131-1/4ft.). (2) When the ODU is at the up side and the height drop exceeds 50m(164ft.), please contact the engineer. When the ODU is at the up side and the height drop between the IDU and ODU is more than 50m(164ft.), the liquid pipe size from the ODU to the first manifold of IDU must be enlarged.
  • Page 23 GMV Heat Recovery DC Inverter VRF Fig.3.3.5 Fig.3.3.6 Fig.3.3.7 (2) The drop and the length of the pipe between the outdoor units are as follows. Unit: m(ft.) Fig.3.3.8 NOTICE! When the distance A+B between the outdoor modules exceeds 2m (6-1/2ft.), U-type oil trap should be added at low-pressure gas pipe and is no more than 2m (6-1/2ft.) away from the outdoor manifold, and A+B≤10m (32-7/8ft.).
  • Page 24 GMV Heat Recovery DC Inverter VRF 3.3.5 Pipe Selection of Heat Recovery System 3.3.5.1 Pipe Selection Fig.3.3.9 (1) Select appropriate branch (“M1,M2”)connected to outdoor module as per the pipe size of basic outdoor module. Pipe size of basic outdoor module is shown as follows: Pipe between module and outdoor branch “M1,M2”...
  • Page 25 GMV Heat Recovery DC Inverter VRF (3) Branch selection of mode exchange box Select branch of mode exchange box as per total capacity of downstream indoor unit(s). Please refer to the following table. Model selection for branch “A1, A2” of mode exchange box: Total capacity of the downstream indoor unit X R410A refrigerant system Model...
  • Page 26 GMV Heat Recovery DC Inverter VRF (8) Piping between indoor branch and indoor unit (“e,f,i,j,k”) Size of connection pipe between indoor branch and indoor unit should be consistent with the connection pipe of indoor unit. Size of connection pipe between indoor branch and indoor unit Rated capacity of indoor units: X(Btu/h) Gas pipe mm(inch)
  • Page 27 GMV Heat Recovery DC Inverter VRF Connecting method is as shown in the picture: Fig.3.3.10 3.3.5.3 Branch selection of indoor unit of mode exchange box (“C1”) Capacity of downstream indoor R410A refrigerant system Model units: X/(Btu/h) Y-type branch 48500<X≤96000 FQ01B/A 3.3.5.4 Piping size between mode exchange box and downstream indoor unit (“m”) Size of connection pipe between indoor branch and indoor unit should be consistent with the connection pipe of indoor unit.
  • Page 28 GMV Heat Recovery DC Inverter VRF 3.3.6 Pipe Selection of Heat Pump System Fig.3.3.11 (1) Select appropriate branch (“M1,M2”)connected to outdoor module as per the pipe size of basic outdoor module. Pipe size of basic outdoor module is shown as follows: Pipe between module and outdoor branch “M1,M2”...

  • Page 29: Pipeline Installation And Insulation

    GMV Heat Recovery DC Inverter VRF Dimension of the pipe of indoor branch Total rated capacity of downstream (inch) (inch) indoor units: X (Btu/h) Gas pipe mm Liquid pipe mm X≤17100 Φ12.7(1/2) Φ6.35(1/4) 17100<X≤48500 Φ15.9(5/8) Φ9.52(3/8) 48500<X≤72000 Φ19.05(3/4) Φ9.52(3/8) 72000<X≤96000 Φ22.2(7/8) Φ9.52(3/8) 96000<X≤120000...
  • Page 30 GMV Heat Recovery DC Inverter VRF Fig.3.4.1 Align the expansion end of copper pipe with the center of threaded joint. Tighten the flare nuts with your hands. Tighten the flare nuts with torque wrench until you hear "click" sound. Use sponge to wrap the connecting pipe and joints without thermal insulation and tie it up with plastic tape.
  • Page 31 GMV Heat Recovery DC Inverter VRF The installation of the branch pipe has the following requirements. Please install it according to the angle shown in the figure below. Improper installation may lead to malfunction of the outdoor unit. Fig.3.4.3 Manifold has several pipe sections with different pipe size, which facilitates to match with various copper pipe.
  • Page 32 GMV Heat Recovery DC Inverter VRF Unit: mm(inch) Fig.3.4.5 3.4.3 Fixation of Manifold (1) There must be three fixing point for both horizontal and vertical installation of the Y-type manifold. Fixing point 1: 100 mm(3-15/16 inch) on the main inlet manifold from the welding point. Fixing point 2: 200 mm(7-7/8 inch) on the main branched pipe from the welding point.

  • Page 33: Static Pressure Ventilation Pipe Installation

    GMV Heat Recovery DC Inverter VRF diameter of the copper pipe is less than 15.9mm(3/4 inch), the wall thickness of the insulation material is no less than 15mm(5/8 inch). (2) Pipeline Wrapping To avoid condensate or water leakage on connecting pipe, the gas pipe and liquid pipe must be wrapped with thermal insulating material and adhesive pipe for insulation from the air.
  • Page 34 GMV Heat Recovery DC Inverter VRF outdoor unit, “③”indicates the top cover grille, “④” indicates the canvas casing and “⑤” indicates the steel bar. The specific operations are as below: Step Photo Operation instruction Note 1) Select installation position for the outdoor unit and then fix it well;...

  • Page 35: Vacuum And Drying Of Refrigeration System

    GMV Heat Recovery DC Inverter VRF Step Photo Operation instruction Note 1) Pull the canvas casing upside down and press it on the butt flange of the steel pipe ventilation pipe with steel bars; 2) Drill holes with the Step 4 —...
  • Page 36 GMV Heat Recovery DC Inverter VRF smeared at the nut and the end of the pipe. Two wrenches should be used when fixing the nut. It is not allowed to connect the pipeline of outdoor unit for test during the air tightness test. The test pressure for R410A system is 4.15 MPa.

  • Page 37: Additional Refrigerant Charging

    GMV Heat Recovery DC Inverter VRF Fig.3.6.2 Vacuumize the Heat Pump System from both the gas pipe and the liquid pipe at the same time. Fig.3.6.3 When the vacuum pump is turned off to stop vacuuming, the valve should be closed at first and then cut off the power for the vacuum pump.
  • Page 38 GMV Heat Recovery DC Inverter VRF (1) Pipeline charging amount: Pipeline charging amount A= ∑Liquid pipe length × refrigerant charging amount of every 1m(39- 3/8 inch) liquid pipe. Diameter of Φ28.6 Φ25.4 Φ22.2 Φ19.05 Φ15.9 Φ12.7 Φ9.52 Φ6.35 liquid pipe (1-1/8) (7/8) (3/4)
  • Page 39 GMV Heat Recovery DC Inverter VRF Suppose the Pipeline charging amount A = ∑Length of liquid pipe × Quantity of refrigerant added to liquid pipe per meter = 5kg (11 LBS). Total refrigerant charging amount R = 5+0=5kg (11+0=11 LBS). Modular combination of outdoor unit subjects to combinations that is currently available.
  • Page 40 GMV Heat Recovery DC Inverter VRF Heat Recovery System: Fig.3.7.1 Fig.3.7.2...
  • Page 41 GMV Heat Recovery DC Inverter VRF Heat Pump System: Fig.3.7.3 Fig.3.7.4 Step 5: Open the high pressure gauge valve (the low pressure gauge valve remains closed), charge the system with refrigerant, and record the weight change of the refrigerant tank. Step 6: When refrigerant tank is over and the refrigerant can’t be charged to the system any more, record the current weight of m2 Step 7: Close the high pressure gauge valve and replace the refrigerant tank.
  • Page 42 GMV Heat Recovery DC Inverter VRF Step 10: If the refrigerant cannot be continuously charged into the system and the calculated added amount of refrigerant has not been fully charged into the system, record current total pre- charging amount: m=(m1-m2) +(m3-m4) +…+(mn-1-mn) Remained refrigerant for start-up charging m`=M-m “M”...

  • Page 43: Electrical Installation

    GMV Heat Recovery DC Inverter VRF 3.7.3 Precautions on Refrigerant Leakage (1) Personnel related to air conditioning engineering design and installation operators must abide by the safety requirement for preventing refrigerant leakage specified in local laws and regulations. (2) Multi VRF unit adopts R410A refrigerant. When the unit is installed in the place where there are people, the refrigerant must not exceed the maximum allowable concentration.
  • Page 44 GMV Heat Recovery DC Inverter VRF prevent the wiring terminal from being stressed; if the length of power cord is insufficient or the power cord is damaged, it is forbidden to connect two power cords together. Please apply a new power cord that meets the local regulations. (4) The unit must be equipped with the circuit breaker and the electric leakage protection device.

  • Page 45: Communication Line Connection

    GMV Heat Recovery DC Inverter VRF Step 2: Tighten the cable with a cable tie. Step 3: Please refer to the engineering wiring mark on the unit for the power cord connection. WARNING! When the power cord and the communication line pass through the wire hole, they must be equipped with wire rubber ring.
  • Page 46 GMV Heat Recovery DC Inverter VRF The connection between the indoor unit and the wired controller is shown as below: Fig.3.9.2 (2) Selection of communication line between outdoor unit and indoor unit. Length of communication wire Wire Wire type between indoor unit and another diameter Remark indoor/outdoor unit(m(ft.))
  • Page 47 GMV Heat Recovery DC Inverter VRF 3.9.3 Communication Line Connection Communication bus connection between indoor unit and outdoor unit must be connected in series, rather than star connection; the endmost indoor unit of communication bus between indoor unit and outdoor unit must connect with the communication matching resistor(in the outdoor unit plastic bag); the fresh air indoor unit is not recommended to be set as the main indoor unit.
  • Page 48 GMV Heat Recovery DC Inverter VRF Fig.3.9.6 Fig.3.9.7...
  • Page 49 GMV Heat Recovery DC Inverter VRF Heat Pump System: Fig.3.9.8 Fig.3.9.9 3.9.4 Communication Address Setting The indoor unit and outdoor unit adopt automatic addressing technology. It is not necessary to manually set the address code. It only needs to set the main module and centralized control address (set it when centralized control of multiple refrigeration systems is required) 3.9.5 Connection Methods and Procedure of Communication System Heat Recovery System:...
  • Page 50 GMV Heat Recovery DC Inverter VRF Fig.3.9.10 Connection of communication NOTICE! ① The communication line and the power cord must be routed separately to avoid interference. ② The communication line must be of suitable length and must not be connected. ③...
  • Page 51 GMV Heat Recovery DC Inverter VRF communication wire for the downstream indoor unit of the second branch and by this analogy. Please note that there’s corresponding mark at the corresponding connection place of copper pipe for each indoor unit on branch. ⑤...
  • Page 52 GMV Heat Recovery DC Inverter VRF NOTICE! ① As for modular indoor unit, if there are multiple outdoor unit modules, the master module must be the first outdoor unit module on the communication line, and it must not connect to the indoor unit (main module is set by SA8 of indoor unit main board).

  • Page 53: Check Items After Installation

    GMV Heat Recovery DC Inverter VRF controller parameter will come out. Default temperature zone displays P00. Press button or button to select parameter code P13. Press “mode” button to switch to setup of parameter values. Then the parameter value will blink. Press button or button to select code 02.

  • Page 54: Preparation Before Test Run

    GMV Heat Recovery DC Inverter VRF (2) Debugging must be carried out by a professional or under the guidance of a professional. Do not debug the air conditioning unit by yourself. (3) Power cannot be supplied until all installation work is completed. When debugging, the front panel of the outdoor unit must be completely closed, otherwise it will affect the accuracy of debugging (as shown in the Fig .4.1.1...
  • Page 55 GMV Heat Recovery DC Inverter VRF (2) Button description: short press: press the button for 3s and then release it; hold the button for 5s: press the button for 5-10s and then release it; hold the button for 10s: press the button for 10s and then release it.
  • Page 56 GMV Heat Recovery DC Inverter VRF Instruction for each stage progress at the time of debugging Debugging — Progress code Status code code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status correspod The system has detected the fault of outdoor ing error 06_outdoor unit’...

  • Page 57: Process Of Engineering Debugging

    GMV Heat Recovery DC Inverter VRF NOTICE! In the pilot run stage, the unit will display corresponding procedures according to actual circumstances. When master module displays as below, the complete unit has conducted the debugging and it stays at the standby status. Debugging code Progress code Status code...
  • Page 58 GMV Heat Recovery DC Inverter VRF Debugging — Progress code Status code code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status Mater module hasn’t been set in the system. It needs to reset it. More than two master modules are set in the 01_ set up system and it needs to reset it.
  • Page 59 GMV Heat Recovery DC Inverter VRF — Debugging code Progress code Status code LED1 LED2 LED3 Progress Display Display Display Code Code Code status status status 04_indoor unit quantity confirmation NOTICE! It is important to confirm that the number of online indoor unit modules is the same as that of actual connected indoor units for the project;...
  • Page 60 GMV Heat Recovery DC Inverter VRF If an abnormality is detected, it will stay in the current state and manual troubleshooting is required. The corresponding faults are as below: — Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display...
  • Page 61 GMV Heat Recovery DC Inverter VRF Step 13: Unit debugging step 09 is “refrigerant judgment before start up”. If the amount of refrigerant inside the system satisfies the requirements for starting the operation, the display is as below. Then it will automatically enter into the next step. —...
  • Page 62 GMV Heat Recovery DC Inverter VRF — Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status 11_reserved function — Step 16: Unit debugging step 12 is “reserved function”. The master module display is as below. Then the unit automatically enters into the next step. —...

  • Page 63: Parameter Judgment Reference Value For Unit Normal Operation

    GMV Heat Recovery DC Inverter VRF 4.4 Parameter Judgment Reference Value for Unit Normal Operation Debugging Parameter Reference Value for DC Inverter VRF Unit Debugging item Parameter name Unit Reference value Remark Outdoor ambient ℃ — — temperature （℉） Discharge pipe ℃...

  • Page 64: Operation Instruction

    GMV Heat Recovery DC Inverter VRF Debugging Parameter Reference Value for DC Inverter VRF Unit Debugging item Parameter name Unit Reference value Remark Operation frequency of ●Change among 20Hz~140Hz — inverter compressor ●IPM module temperature is lower than IPM module ℃...

  • Page 65: Drain Pipe

    2 hours before starting the operation to preheat the outdoor compressor crankcase. (6) Check if the outdoor unit is installed firmly. If there is any abnormality, please contact Gree service center. 6.4 Maintenance at the End of Using Season (1) Cut off the main power of the air conditioning unit.

  • Page 66: Troubleshooting

    Too many heat resources in the room. Reduce heat resources. Filter is blocked and dirty. Clean the filter. NOTICE! If problem cannot be solved after checking the above items, please contact Gree service center and describe the cases and models.
  • Page 67 GMV Heat Recovery DC Inverter VRF ● Following circumstances are not malfunctions. Phenomenon Causes When unit is started immediately Overload protection switch makes it run after 3 after it is just turned off minutes delay Unit doesn’t run When power is turned on Standby operating for about 1 minute Mist comes from the Under cooling...

  • Page 68: Error Indication

    GMV Heat Recovery DC Inverter VRF 7.2 Error Indication NOTICE! For specific unit fault and maintenance, please refer to the engineering debugging and after-sales maintenance manual of DC inverter VRF unit. Error Error — Content Content Code Code Malfunction of IDU Protection of indoor fan Auxiliary heating protection Water-full protection...
  • Page 69 GMV Heat Recovery DC Inverter VRF Error Error — Content Content Code Code Malfunction of current detection Desynchronizing protection of IDU circuit of IDU Communication malfunction of IDU’s Communication malfunction of Indoor driver IDU’s main control Drive IPM high temperature Malfunction of drive temperature protection of IDU sensor of IDU...
  • Page 70 GMV Heat Recovery DC Inverter VRF Error Error — Content Content Code Code Malfunction of inlet tube Clock of system is abnormal temperature sensor of condenser High-pressure sensor and low- Malfunction of outlet tube pressure sensor are connected temperature sensor of condenser reversely Malfunction of temperature sensor Malfunction of temperature sensor...
  • Page 71 GMV Heat Recovery DC Inverter VRF Error Error — Content Content Code Code Grid side hardware overcurrent High or low photovoltaic voltage protection protection DC bus neutral-point potential Grid side module high-temperature unbalance protection protection Outdoor Grid side temperature sensor Charging circuit protection protection Grid side relay protection...

  • Page 72: After-Sales Service

    Gree. Warranty should meet the following requirements: (1) First run of the unit should be operated by professional personnel from Gree appointed service center. (2) Only Gree manufactured accessories can be used on the machine.

This manual is also suitable for:

Gmv-vq72wm/c-f(u)Gmv-vq96wm/c-f(u)Gmv-vq120wm/c-f(u)

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