Gree Ultra Heat GMV Multi VRF Series Owner's Manual
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Gree Ultra Heat GMV Multi VRF Series Owner's Manual

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GREE reserves the right to interpret this manual which will be subject to any change due to product
i m p r o v e m e n t without further notice.
G REE Electric Appliances, Inc. of Zhuhai reserves the final right to interpret this manual.
Ultra Heat GMV Multi VRF Units
Heat Recovery Serial
Owner's Manual
Air Conditioners
GMV-VQ72W/A-F(U)
GMV-VQ96W/A-F(U)
GMV-VQ192WM/A-F(U)

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Summary of Contents for Gree Ultra Heat GMV Multi VRF Series

  • Page 1 GREE reserves the right to interpret this manual which will be subject to any change due to product i m p r o v e m e n t without further notice.
  • Page 3 Preface Gree Ultra Heat GMV 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. Obey all safety messages that follow this symbol to avoid possible injury or death.
  • Page 4 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 5: Table Of Contents

    Contents 1 Safety Precautions ....................... 1 2 Product Introduction ......................3 2.1 Names of Main Parts ..........................3 2.2 Combinations of Outdoor Units ........................ 3 2.3 Combinations of Indoor and Outdoor Units .................... 3 2.4 The Range of Production Working Temperature ................... 4 3 Preparation before Installation ...................

  • Page 6: Safety Precautions

    (18) Under cooling mode, please don't set the room temperature too low and keep the temperature difference between indoor and outdoor unit within 5ºC(41ºF). (19) 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.
  • Page 7 (27) 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 8: Product Introduction

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 2 Product Introduction Gree Ultra Heat GMV Multi VRF Modular System (heat recovery serial) adopts inverter compressor technology. According to change the displacement of compressor, step less capacity regulation within range of 10%-100% can be realized. Various product lineup is provided with capacity range from 72K Btu to 192K Btu, which can be widely used in working area and especially applicable to the place with variable load change.

  • Page 9: The Range Of Production Working Temperature

    Ultra Heat GMV Multi VRF_Heat Recovery Serial GMV-VQ96W/A-F(U) GMV-VQ192WM/A-F(U) The total capacity of indoor units should be within 50%~135% of that of outdoor units. While the rate is over 100% and all IDUs are on run, the units cooling or heating capacity will be wakened. Fig.2 Fig.2 is the combination view of the ODU of Ultra Heat GMV Multi VRF Modular System (heat recovery serial) and the IDU of Multi VRF System.

  • Page 10: Preparation Before Installation

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 3 Preparation before Installation Note: The picture is only used for reference and the actual product prevails. Unit: mm (inch). 3.1 Standard Parts Please use the following standard parts supplied by Gree. Parts for Outdoor Unit Number Name...
  • Page 11 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.3 2) Space dimension for dual-module unit Fig.4 3.2.2 Space requirement for the top of outdoor unit When the unit is located in a totally open space with no obstructions in four directions, keep the distance between the unit top and wall at least 1500mm (59inch) or above (See Fig.5).
  • Page 12 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.6 3.2.3 Space dimension for multiple-module unit For keeping good ventilation, make sure there are no obstructions above the unit. When the unit is located at a half-open space (front and left/right side is open), install the unit as per the same or opposite direction.
  • Page 13 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.8 3.2.3 Take seasonal wind into consideration when installing the outdoor unit 1) Anti-monsoon installation requirements for unit not connecting exhaust duct Fig.9...
  • Page 14 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.10 2) Anti-monsoon installation requirements for unit connecting exhaust duct Fig.11 3.2.4 Take snow into consideration when installing the outdoor unit...

  • Page 15: Piping Work Requirements

    Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.12 3.3 Piping Work Requirements There should be no fall among outdoor modules. Refer to the table below for piping work requirements. R410A Refrigeratn System Outer diameter (mm/inch) Wall thickness (mm) Type Φ6.35(1/4) ≥0.8 Φ9.52(3/8) ≥0.8...

  • Page 16: Installation Instruction

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 4 Installation Instruction 4.1 ODU 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 17: Physical Dimension Of The Outdoor Unit And Mounting Hole

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.2 Physical Dimension of the Outdoor Unit and Mounting Hole Outline and physical dimension of GMV-VQ72W/A-F(U)、GMV-VQ96W/A-F(U) : Fig.14...

  • Page 18: Connection Pipe

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.3 Connection Pipe 4.3.1 Schematic diagram of piping connection Module Module 2 Branch between Lowpressure gas pipe outdoor units High pressure gas pipe Outdoor Connection pipe between outdoor Liquid pipe connection pipe branch and the first indoor branch Connection pipe between indoor branch and indoor units Mode Indoor...
  • Page 19 Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.3.3 Allowable pipe length and drop height 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. Remark: Equivalent length of one Y-type manifold is about 0.5m (1-3/4feet). Fig.17 L12: Length from the first branch to the farthest IDU;...
  • Page 20 Ultra Heat GMV Multi VRF_Heat Recovery Serial ≤15(49) Height difference between indoor units ≤90(295-1/4) Maximum length of Main pipe(3) ≤40(131-1/4) From IDU to its nearest branch (4) A11,A12,B21,B22,D21,D22 Notices: (1) Normally, the pipe length from the first branch of IDU to the farthest IDU is 40m (131-1/4feet). Under the following conditions, the length can reach 90m (295-1/4feet).
  • Page 21 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.19 Note: when the distance between outdoor units exceeds 2m (6-1/2 feet), U-type oil trap should be added at low-pressure gas pipe. a≤10m (32-7/8 feet); b≤10m (32-7/8 feet). 4.3.5 Size requirement for branch pipe and piping 4.3.5.1 Connection sketch map of single-module system Fig.20...
  • Page 22 Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.3.5.2 Connection sketch map of multi-module system Fig.21 4.3.5.3 Pipe selection between outdoor unit and the first indoor branch (“L”) For single module, L pipe between the basic outdoor unit and the first indoor branch: Pipe between outdoor unit and the first indoor branch Basic module Low pressure gas pipe...
  • Page 23 Ultra Heat GMV Multi VRF_Heat Recovery Serial Model Module’s capacity C (Btu/h) C≤327500 ML01R 327500 < C ML02R 4.3.5.5 Branch selection of mode exchanger (“A1, A2”) R410A refrigerant system Total Capacity of the Downstream Indoor Unit X(Btu/h) Model X≤17100 FQ01Na/A 17100＜X≤72000 FQ02Na/A 72000＜X≤96000...
  • Page 24 Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.3.5.8 Branch selection of downstream indoor unit of mode exchanger (“B1,B2, B3”) R410A refrigerant system Total rated capacity of downstream indoor units: X(Btu/h) Model X≤48500 Y-type branch FQ01A/A 4.3.5.9 Pipe size between mode exchanger and downstream indoor unit (“b, c, d, g”) Piping size between indoor branches Total rated capacity of downstream indoor units: X (Btu/h)

  • Page 25: Installation Of The Connection Pipe

    Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.22 Connecting method is shown as in the Fig.23. Fig.23 4.3.6.1 Branch selection of indoor unit of mode exchanger (“C1”) Total rated capacity of downstream R410A refrigerant system Model indoor units: X(Btu/h) Y-type branch 48500<X≤96000 FQ01B/A 4.3.6.2 Pipe size between mode exchanger and downstream and indoor unit (“m”)
  • Page 26 Ultra Heat GMV Multi VRF_Heat Recovery Serial (1) Conform to the following principles during piping connection: Connection pipeline should be as short as possible. The height difference between indoor and outdoor units should be as short as possible. Keep number of bends as little as possible. The radius of curvature should be as large as possible. (2) Weld the connection pipes between indoor and outdoor unit.
  • Page 27 Ultra Heat GMV Multi VRF_Heat Recovery Serial deburr as well. See Fig.15. (3) Y-type manifold must be installed vertically or horizontally. Fig.26 Total capacity of downstream Y-type manifold Model indoor unit(s) C (Btu/h) C≤68000 FQ01A/A 68000＜C≤102000 FQ01B/A 102000＜C≤239000 FQ02/A 239000＜C FQ03/A (4) Manifold is isolated by insulating material that can bear 120ºC(248℉)or higher temperature.
  • Page 28 Ultra Heat GMV Multi VRF_Heat Recovery Serial (3) There must be three fixing point for both horizontal and vertical installation of Y-type manifold. Fixing point 1: 100mm (4in.) on the main inlet manifold from the welding point. Fixing point 2: 200mm (7-7/8in.) on the main branched manifold from the welding point. Fixing point 3: 250mm(9-5/6in.) on the branched pipe from the welding point.

  • Page 29: Air Purging And Refrigerant Charge

    Ultra Heat GMV Multi VRF_Heat Recovery Serial (1) Support should be made for hanging connection pipe. Distance between each support cannot be over 1m (39-3/8inch). (2) Protection towards accidental damage should be made for outdoor pipeline. If the pipeline exceeds 1m (39-3/8inch), a pinch board should be added for protection. 4.5 Air Purging and Refrigerant Charge 4.5.1 Air purging (1) Confirm outdoor liquid and gas valves are closed.
  • Page 30 Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.5.2 Additional refrigerant charging Outdoor unit has been charged refrigerant before delivery. If the pipeline is longer than 1m (39-3/8inch), please refer to the following table for charging amount of refrigerant. (Liquid pipe prevails) Total refrigerant charging amount R= Pipeline charging amount A + ∑charging amount B of every module (1) Pipeline charging amount...
  • Page 31 Ultra Heat GMV Multi VRF_Heat Recovery Serial The OUD is GMV-VQ192WM/A-F(U) including GMV-VQ96W/A-F(U) and GMV-VQ96W/A-F(U). The IDUs are made up of 10 sets of GMV-ND18PHS/A-T(U). IDU/ODU rated capacity collocation ratio C=18×10/192=94%.The quantity of included IDUs is more than 8 sets. Please refer to the above table. Refrigerant charging amount B for GMV-VQ96W/A-F(U) module is3kg(6.6 lbs).

  • Page 32: Electric Wiring

    Ultra Heat GMV Multi VRF_Heat Recovery Serial the accumulative charge quantity of modules upon delivery is used) + Onsite charge quantity = Total refrigerant charge quantity in the system (kg) (2) Calculate the volume of maximum air conditioning space (m³ ). Volume of air conditioning space (m³...
  • Page 33 Ultra Heat GMV Multi VRF_Heat Recovery Serial (6) Connect the unit to the special earthing device and make sure the unit is earthed soundly. (7) Air switch and circuit breaker is required to be set. Air switch should have both magnetic trip and thermal trip functions so as to protect the unit when short-circuit and overload happens.
  • Page 34 Ultra Heat GMV Multi VRF_Heat Recovery Serial (7) An all-pole disconnection switch having a contact separation of at least 3mm (1/8inch) in all poles should be connected in fixed wiring. 4.6.3 Connection of power cord WARNING (1) Before obtaining access to terminals, all supply circuits must be disconnected. (2) If units are type I electrical appliances, they must be reliably grounded.

  • Page 35: System Communication

    Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig. 34 4.7 System Communication 4.7.1 Communication system (1) Communication among outdoor basic modules. (2) Communication between ODU and IDU. (3) Communication among IDUs.
  • Page 36 Ultra Heat GMV Multi VRF_Heat Recovery Serial (4) Communication between IDU and wired controller. (5) Connection between IDU and light board receiver. (6) Communication between different refrigeration systems. (7) Graphics of general communication connection. Fig.35 4.7.2 Communication mode of Ultra Heat GMV Multi VRF units CAN bus is taken for communication between IDU and ODU and communication among IDUS.
  • Page 37 Ultra Heat GMV Multi VRF_Heat Recovery Serial 1. Total length of communication line can't exceed 250m (820-1/5feet). Light/Ordinary 2. The cord shall be Circular cord (the 2×AWG18~ polyvinyl chloride L≤250(820-1/5) cores shall be twisted together). 2×AWG16 sheathed cord. 3. If unit is installed in places with intense magnetic field or strong interference, it is necessary to use shielded wire.
  • Page 38 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.38 Fig.39...

  • Page 39: Connection Method And Steps For System Communication

    Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.40 (2) All communication wires of Ultra Heat GMV are connected by screws. Terminal Bend Connection Screw Fig.41 (3) If a single communication wire is not long enough and needs to be connected, the connected joint must be welded or pressure-welded.
  • Page 40 Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.8.1 Communication connection between IDU and ODU NOTICE! The centralized controller can be installed when it is necessary. Connection of communication for single-module system and single-moudle mode exchanger system: Fig.42...
  • Page 41 Ultra Heat GMV Multi VRF_Heat Recovery Serial Connection of communication for single-module system and multi-module mode exchanger system: Fig.43...
  • Page 42 Ultra Heat GMV Multi VRF_Heat Recovery Serial Connection of communication for multi-module system and multi-module mode exchanger system: Fig.44...
  • Page 43 Ultra Heat GMV Multi VRF_Heat Recovery Serial Connection of communication for multi refrigeration systems: Fig.45...
  • Page 44 Ultra Heat GMV Multi VRF_Heat Recovery Serial (1) For modular outdoor units, if there are multiple outdoor modules, then the master unit must be the first outdoor module on the communication wire and should not connect with IDU (master unit is set by S7 of the outdoor main board).
  • Page 45 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.48 One wired controller controls multiple IDUs Fig.49 Two wired controllers control multiple IDUs When two wired controllers control multiple IDUs, the wired controllers can be connected to any one IDU, provided that the connected IDU is of the same series. Meanwhile, one and only one of the wired controllers must be set as a slave controller.

  • Page 46: External Electrical Wiring Diagram

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.8.3 Communication connection of central controlling units NOTICE! The centralized controller can be installed when it is necessary. Port connection G1 and G2 on the wiring board of master unit and slave unit among each multi VRF system (see below) Fig.50 4.9 External Electrical Wiring Diagram...
  • Page 47 Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.9.1 External wiring diagram of a single unit Fig.51 NOTICE! Maximum number of IDU is based upon ODU capacity. For details, please refer to the introduction of units’ combination.

  • Page 48: Attention Before Operation

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 4.9.2 External wiring diagram of modular connection Fig.52 NOTICE! Maximum number of ODU (N) and maximum number of IDU (n) are based upon the combination type of ODU. For details, please refer to the introduction of unit combination. 4.10 Attention before operation The installer should read the following items, and make sure that the metal parts supplied for transportation are taken down.
  • Page 49 Ultra Heat GMV Multi VRF_Heat Recovery Serial Fig.53 2) While installation, please make sure the metal parts are taken down. Then fasten the compressor fixed nuts again and re-wrap the soundproof material. Note: if the unit is operating with the metal parts stay, it may lead to compressor abnormal vibration;...

  • Page 50: Check Items After Installation And Trial Run

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 5 Check Items after Installation and Trial Run 5.1 Check Items after Installation Check items Possible conditions due to improper installation Check Each part of the unit is installed securely? Unit may drop, shake or emit noise Gas leakage test is taken or not? Insufficient cooling (heating) capacity Unit gets proper thermal insulation or not?
  • Page 51 Ultra Heat GMV Multi VRF_Heat Recovery Serial (6) Check the valve: fully open the gas and liquid valve. 5.2.2 Trial run 5.2.2.1 Notices (1) Before test operation, make sure unit is power on and compressor has been preheated for more than 8 hours.
  • Page 52 Ultra Heat GMV Multi VRF_Heat Recovery Serial LED1 LED2 LED3 Progress Display Display Display Code Code Code status status status Light System is not debugged. Master unit hasn’t been set, please Light set it. Master unit is two or more than two. Light 01_ Set master Please reset.
  • Page 53 Ultra Heat GMV Multi VRF_Heat Recovery Serial judgments Refrigerant is normal. Next step will Light Light Light before startup start automatically. —— —— —— —— —— —— No meaning. —— —— —— —— —— —— No meaning. Light Light Blink Ready for units to start debugging.
  • Page 54 Ultra Heat GMV Multi VRF_Heat Recovery Serial can be seen in Master Unit Setup S7 of Technical service manual (Set master unit S7 as “00”; Set slave unit S7 as “10”). Step 4: Connect power for all indoor units. Make sure all IDUs are power on. Then all outdoor modules will display “A0”.
  • Page 55 Ultra Heat GMV Multi VRF_Heat Recovery Serial 02_Allocate Light Light Light addresses Step 8: In progress 03, the quantity of modules needs to be confirmed manually. Main board will display: —— Debugging code Progress code Status code LED1 LED2 LED3 Progress Code Display status...
  • Page 56 Ultra Heat GMV Multi VRF_Heat Recovery Serial LED1 LED2 LED3 Progress Display Display Display Code Code Code status status status Communication between master Light ODU and inverter compressor driver 05_Internal has error. communicatio n detection Communication between master Light ODU and IDUs has error. Elimination methods of above errors can be found in Troubleshooting.
  • Page 57 Ultra Heat GMV Multi VRF_Heat Recovery Serial —— Debugging code Progress code Status code LED1 LED2 LED3 Progress Code Display status Code Display status Code Display status 08_Confirm preheated Light Light Light compressor If the ODU valves connecting with IDU have been opened manually, then press SW4 confirmation button on the master unit to confirm it.
  • Page 58 Ultra Heat GMV Multi VRF_Heat Recovery Serial confirm the startup again. Operate as below: If master unit displays as below, system is waiting for confirmation signal. —— Debugging code Progress code Status code LED1 LED2 LED3 progress Code Display status code Display status Code...
  • Page 59 Ultra Heat GMV Multi VRF_Heat Recovery Serial System detects error in indoor pipeline. XXXX is the project code of the faulted XXXX/ IDU. 3s later, error code is displayed. Error Light For example, IDU no. 100 has d5 error, code then LED3 displays like this: 01 (2s later) 00 (2s later) d5, and repeat again.

  • Page 60: Common Malfunctions And Troubleshooting

    Otherwise, there will be collision malfunction of the project codes. For detail operation methods, please refer to the Ultra Heat GMV Technical Service Manual. (2) If problem cannot be solved after checking the above items, please contact Gree service center and show phenomena and models.
  • Page 61 Ultra Heat GMV Multi VRF_Heat Recovery Serial Following circumstances are not malfunction. “Malfunction” Reason When unit is started immediately after it Overload protection switch makes it run after 3 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 62: Error Indication

    Ultra Heat GMV Multi VRF_Heat Recovery Serial 7 Error Indication Inquiry method of error indication: combine division symbol and content symbol to check the corresponding error. Indoor: Error Code Content Error Code Content Malfunction of lower water temperature Malfunction of IDU sensor of water tank Protection of indoor fan Malfunction of ambient temperature sensor...
  • Page 63 Ultra Heat GMV Multi VRF_Heat Recovery Serial Outdoor: Error Code Content Error Code Content Limited frequency reduction for high Malfunction of ODU pressure protection Limited frequency reduction for low pressure High-pressure protection protection Limited frequency reduction for power Discharge low-temperature protection protection Limited frequency reduction for IPM Low-pressure protection...
  • Page 64 Ultra Heat GMV Multi VRF_Heat Recovery Serial Error Code Content Error Code Content Desynchronizing protection of inverter Malfunction of driving board of fan compressor Malfunction of drive storage chip of Driving board of fan operates abnormally compressor High-voltage protection of compressor’s Voltage protection of driving board power of drive DC bus bar Malfunction of current detection circuit drive...
  • Page 65 Ultra Heat GMV Multi VRF_Heat Recovery Serial Debugging: Error Code Content Error Code Content Preheat time of compressor is insufficient Alarm because ODU quantity is inconsistent Wrong setting of ODU’s capacity Abnormal communication of converter code/jumper cap Power supply phase sequence protection Emergency status of compressor Refrigerant-lacking protection Emergency status of fan...
  • Page 66 Ultra Heat GMV Multi VRF_Heat Recovery Serial Status: Error Code Content Error Code Content Unit waiting for debugging Shielding status Refrigerant recovery operation of after-sales SE operation setting of system Defrosting Compulsory defrosting Limit setting for max. capacity/output Oil-return capacity Compulsory excursion of engineering code Heat pump function setting of IDU...

  • Page 67: Maintenance And Care

    (4) In the event of rusting, use the anti-rust paint to stop spreading of rust. 8.5 Parts Replacement Purchase parts from Gree appointed service center or dealer if necessary. Note: During airtight and leakage test, never mix oxygen, ethyne and other dangerous gas into...

  • Page 68: 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.
  • Page 72 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com...

This manual is also suitable for:

Ultra heat gmv-vq72w/a-fUltra heat gmv-vq72w/a-fuUltra heat gmv-vq96w/a-fUltra heat gmv-vq96w/a-fuUltra heat gmv-vq192wm/a-fUltra heat gmv-vq192wm/a-fu

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