Gree Ultra Heat GMV Multi VRF Series User manual

Owner’s Manual
retain it for future reference. If you have lost the Owner’s Manual, please contact the local agent or visit
www.gree.com or sent email to [email protected] or electronic version.
i m p r o v e m e n t without further notice.
GREE reserves the right to interpret this manual which will be subject to any change due to product
Ultra Heat GMV Multi VRF
R410A Systems ―Outdoor Unit
Air Conditioners
GMV-V72W/A-F(U)
GMV-V96W/A-F(U)
T hank you for choosing Air Conditioners, please read this owner’s manual carefully before operation and
G REE Electric Appliances, Inc. of Zhuhai reserves the final right to interpret this manual.
GMV-V192WM/A-F(U)

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.
WARNING
This mark indicates procedures which, if improperly performed, might lead to the death or serious
injury of the user.
CAUTION
This mark indicates procedures which, if improperly performed, might possibly result in personal
harm to the user, or damage to property.
NOTICE is used to address practices not related to personal injury.
WARNING
(1) Instructions for installation and use of this product are provided by the manufacturer.
(2) Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only.
(3) For safety operation, please strictly follow the instructions in this manual.
(4) During operation, the gross rated capacity of working IDU should be within the gross rated capacity of ODU.
Otherwise, IDU’s cooling/heating performance will be reduced.
(5) This manual must be in the hands of direct operators or maintenance men.
(6) In case of malfunction and operation failure, please examine the following items and contact our authorized service
centers as soon as possible.
1) Nameplate (model, cooling capacity, product code, ex-factory date).
2) Malfunction status (detail description of conditions before and after malfunction occurs)
(7) All units have been strictly tested and proved to be qualified before ex-factory. To avoid unit damage or even
operation failure which may be caused by improper disassembly, please do not disassemble units by yourself. If
disassembly is needed, please contact our authorized serve centers for help.
(8) All graphics and information in this manual are only for reference. Manufacturer reserves the right for changes in
terms of sales or production at any time and without prior notice.
(9) If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been given
supervision or instruction concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made
by children without supervision.
DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such
waste separately for special treatment is necessary.

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;
(3) After verification, the defect of product is directly caused by corrosive gas;
(4) After verification, defects are due to improper operation during transportation of product;
(5) Operate, repair, maintain the unit without abiding by instruction manual or related regulations;
(6)
After verification, the problem or dispute is caused by the quality specification or performance of parts and
components that produced by other manufacturers;
(7) The damage is caused by natural calamities, bad using environment or force majeure.

Contents
1 Safety Precautions ...............................................................................................................1
2 Product Introduction............................................................................................................3
2.1 Names of Main Parts................................................................................................................................. 3
2.2 Combinations of Indoor and Outdoor Units............................................................................................ 3
2.3 The Range of Production Working Temperature................................................................................... 4
3 Preparation before Installation ...........................................................................................5
3.1 Standard Parts............................................................................................................................................ 5
3.2 Installation Site............................................................................................................................................ 5
3.3 Piping Work Requirements ..................................................................................................................... 11
4 Installation Instruction.......................................................................................................12
4.1 Physical Dimension of the Outdoor Unit and Mounting Hole............................................................. 13
4.2 Connection Pipe....................................................................................................................................... 14
4.3 Installation of the Connection Pipe........................................................................................................ 20
4.4Air Purging and Refrigerant Charge...................................................................................................... 24
4.5 Electric Wiring............................................................................................................................................27
4.6 System Communication........................................................................................................................... 30
4.7 Connection Method and Steps for System Communication.............................................................. 34
4.8 External Electrical Wiring Diagram........................................................................................................ 39
5 Check Items after Installation and Trial Run................................................................... 43
5.1 Check Items after Installation ................................................................................................................. 43
5.2 Trial Run..................................................................................................................................................... 43
6 Common Malfunctions and Troubleshooting .................................................................53
7 Error Indication...................................................................................................................55
8 Maintenance and Care .......................................................................................................58
8.1 Outdoor Heat Exchanger......................................................................................................................... 58
8.2 Drain Pipe.................................................................................................................................................. 58
8.3 Notice before Seasonal Use
................................................................................................................... 58
8.4 Maintenance after Seasonal Use........................................................................................................... 59
8.5 Parts Replacement................................................................................................................................... 59
9 After-sales Service..............................................................................................................59

Ultra Heat GMV Multi VRF
1
1 Safety Precautions
WARNING
(1) This product can’t be installed at corrosive, inflammable or explosive environment or the place with special
requirements, such as kitchen. Otherwise, it will affect the normal operation or shorten the service life of the unit, or
even cause fire hazard or serious injury. As for above special places, please adopt special air conditioner with
anti-corrosive or anti-explosion function.
(2) Follow this instruction to complete the installation work. Please carefully read this manual before unit startup and
service.
(3) Wire size of power cord should be large enough. The damaged power cord and connection wire should be replaced
by exclusive cable.
(4) After connecting the power cord, please fix the electric box cover properly in order to avoid accident.
(5) Never fail to comply with the nitrigen charge requirements. Charge nitrogen when welding pipes.
(6) Never short-circiut or cancel the pressure switch to prevent unit damage.
(7) Please firstly connect the wired controller before energization, otherwise wired controller cannot be used.
(8) Before using the unit, please check if the piping and wiring are correct to avoid water leakage, refrigerant leakage,
electric shock, or fire etc..
(9) Do not insert fingers or objects into air outlet/inlet grille.
(10) Open the door and window and keep good ventilation in the room to avoid oxygen deficit when the gas/oil supplied
heating equipment is used.
(11) Never start up or shut off the air conditioner by means of directly plug or unplug the power cord.
(12) Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the compressor.
(13) Do not allow children operate this unit.
(14) Do not operate this unit with wet hands.
(15
) Turn off the unit or cut off the power supply before cleaning the unit, otherwise electric shock or injury may happen.
(16) Never spray or flush water towards unit, otherwise malfunction or electric shock may happen.
(17) Do not expose the unit to the moist or corrosive circumstances.
(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.
(20) Before installation, please check if the power supply is in accordance with the requirements specified on the
nameplate. And also take care of the power safety.
(21) Installation should be conducted by dealer or qualified personnel. Please do not attempt to install the unit by
yourself. Improper handling may result in water leakage, electric shock or fire disaster etc.

Ultra Heat GMV Multi VRF
2
(22) Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock and fire accidents.
(23) 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.
(24) Electrify the unit 8 hours before operation. Please switch on for 8 hours before operation. Do not cut off the power
when 24 hours short-time halting (to protect the compressor).
(25) If refrigerant leakage happens during installation, please ventilate immediately. Poisonous gas will emerge if the
refrigerant gas meets fire.
(26) Volatile liquid, such as diluent or gas will damage the unit appearance. Only use soft cloth with a little neutral
detergent to clean the outer casing of unit.
(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.
(28) When the external heat exchanger or the air outlet are covered by ice or snow, be sure to clear the ice or snow
before starting the operation, otherwise it will damage the unit or invalid operation.
GREE will not assume responsibility of personal injury or equipment damage caused by improper
installation and commission, unnecessary service and incapable of following the rules and instructions
listed in this manual.

Ultra Heat GMV Multi VRF
3
2 Product Introduction
Gree Ultra Heat GMV Multi VRF modular System 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. Gree air
conditioner is absolutely your best choice.
2.1 Names of Main Parts
Fig.1
NO. ①②③④⑤
Name Fan, Motor Electric Box
Assembly Valve interface Communication
code through-hole Power cord through-hole
2.2 Combinations of Outdoor Units
Single Model GMV-V192WM/A-F(U)
Combined Model GMV-V96W/A-F(U)+
GMV-V96W/A-F(U)
2.3 Combinations of Indoor and Outdoor Units
ODU Model Max number of connectable IDU (unit)

Ultra Heat GMV Multi VRF
4
GMV-V72W/A-F(U) 12
GMV-V96W/A-F(U) 17
GMV-V192WM/A-F(U) 34
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 and the IDU
of Multi VRF System. IDU can be cassette type, one-way cassette type, wall-mounted type, duct type,
etc. When any one IDU receives operation signal, ODU will start to work according to the capacity; when
all IDUs stop, ODU will also stop.
2.4 The Range of Production Working Temperature
Cooling operation Ambient temperature: -10ºC(14ºF)~52ºC(125.6ºF)
Heating operation Ambient temperature: -30ºC(-22ºF)~24ºC(75.2ºF)
When the indoor units are all VRF air processor, the unit operating range is as follows:
Cooling operation Ambient temperature: 16ºC(60.8ºF)~45ºC(113ºF)
Heating operation Ambient temperature: -7ºC(19.4ºF)~16ºC(60.8ºF)
NOTICE! Out of the working Temperature Range may damage this products and will
invalidate the warranty.
Electrify the unit 8 hours before operation. Please switch on for 8 hours before operation. Do
not cut off the power when 24 hours short-time halting (to protect the compressor).

Ultra Heat GMV Multi VRF
5
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 Picture Quantity Remarks
1 Owner's Manual
1
2 Wiring (match with
resistance) 2
The resistance must be connected
to the last IDU of communication
connection D1/D2.
Another resistance is connected to
the last system master ODU G1/G2
when multi-refrigeration systems
are connecting with the centralized
controller.
3 Mark (master) 2 Attach on the wired controller of
master IDU or on the front panel
3.2 Installation Site
WARNING
Install the unit at a place where is adequate to withstand the weight of the unit and make sure the unit would not shake
or fall off.
Never expose the unit under direct sunshine and rainfall. Install the unit at a place where is against dust, typhoon and
earthquake.
Try to keep the unit away from combustible, inflammable and corrosive gas or exhaust gas.
Leave some space for heat exchanging and servicing so as to guarantee unit normal operation.
Keep the indoor and outdoor units close to each other as much as possible so as to decrease the pipe length and
bends.
Never allow children to approach to the unit and take measures to prevent children touching the unit.
3.2.1 Space requirement for the surround of outdoor unit
When the outdoor unit is totally surrounded by walls, please refer to following figures for space
dimension.

Ultra Heat GMV Multi VRF
6
1) Space dimension for single-module unit
Fig.3
2) Space dimension for dual-module unit
Fig.4
3.2.2 Space requirement for the top of outdoor unit
When there is wall (or similar obstruction) above the unit, keep the distance between the unit top and
the wall at least 3000mm (118-1/8in.) or above. 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 (59in.)
or above. When space is limited within 1500mm (59in.) or the unit is not set in an open space, air outlet
pipe is required to be installed in order to keep good ventilation.