Gree GMVVQ224WM/C-X User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
GMV Heat Recovery DC Inverter VRF
Models:
GMV-VQ224WM/C-X
GMV-VQ280WM/C-X
GMV-VQ335WM/C-X
GMV-VQ400WM/C-X
GMV-VQ450WM/C-X
GMV-VQ504WM/C-X
GMV-VQ560WM/C-X
GMV-VQ615WM/C-X
……
GMV-VQ2460WM/C-X

To Users
Thank you for selecting Gree’s product. Please read this instruction manual carefully before
installing and using the product, so as to master and correctly use the product. In order to guide you
to correctly install and use our product and achieve expected operating effect, we hereby instruct as
below:
(1) 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.
(2) In order to ensure reliability of product, the product may consume some power under stand-
by status for maintaining normal communication of system and preheating refrigerant and
lubricant. If the product is not to be used for long, cut off the power supply; please energize
and preheat the unit in advance before reusing it.
(3) Please properly select the model according to actual using environment; otherwise it may
impact the using convenience.
(4) This product has gone through strict inspection and operational test before leaving the factory.
In order to avoid damage due to improper disassembly and inspection, which may impact the
normal operation of unit, please do not disassemble the unit by yourself. You can contact with
the special maintenance center of our company if necessary.
(5) When the product is faulted and cannot be operated, please contact with our maintenance
center as soon as possible by providing the following information.
1)Contents of nameplate of product (model, cooling/heating capacity, product No., ex-factory
date).
2)Malfunction statuses (specify the situations before and after the error occur).
(6) All the illustrations and information in the instruction manual are only for reference. In order
to make the product better, we will continuously conduct improvement and innovation. We
have the right to make necessary revision to the product from time to time due to the reason
of sales or production, and reserve the right to revise the contents without further notice.
(7) The final right to interpret for this instruction manual belongs to Gree Electric Appliances, Inc.
of Zhuhai.

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 Notices (Please be sure to abide them)............................................................ 1
2 Product Introduction..................................................................................................... 5
2.1 Product Features .............................................................................................................. 5
2.2 Product List ...................................................................................................................... 5
2.3 Names of Main Parts ........................................................................................................ 8
2.4 The Range of Production Working Temperature ............................................................... 8
2.5 Standard Parts.................................................................................................................. 9
3 Product Installation ...................................................................................................... 9
3.1 Safety Precautions for Installing, Repairing and Moving Units .......................................... 9
3.2 Outdoor Unit Installation ..................................................................................................10
3.3 Pipeline Design................................................................................................................19
3.4 Pipeline Installation and Insulation...................................................................................29
3.5 Static Pressure Ventilation Pipe Installation .....................................................................33
3.6 Vacuum and Drying of Refrigeration System....................................................................35
3.7 Additional Refrigerant Charging .......................................................................................37
3.8 Electrical Installation ........................................................................................................41
3.9 Communication Line Connection .....................................................................................46
3.10 Check Items after Installation.........................................................................................54
4 Debugging and Operation.......................................................................................... 55
4.1 Preparation before Test Run ............................................................................................55
4.2 Notices for Unit Debugging ..............................................................................................55
4.3 Basic Introduction for Engineering Debugging .................................................................59
4.4 Parameter Judgment Reference Value for Unit Normal Operation ...................................65
5 Operation Instruction.................................................................................................. 67
6 Maintenance .............................................................................................................. 67
6.1 Heat Exchanger of Outdoor Unit ......................................................................................67
6.2 Drain Pipe........................................................................................................................67
6.3 Precautions at the Beginning of Using Season ................................................................67
6.4 Maintenance at the End of Using Season ........................................................................68
6.5 Parts Replacement ..........................................................................................................68
7 Troubleshooting ......................................................................................................... 68
7.1 Common Malfunction and Troubleshooting......................................................................68
7.2 Error Indication ................................................................................................................69
8 After-sales Service..................................................................................................... 74

GMV Heat Recovery DC Inverter VRF
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1 Safety Notices (Please be sure to abide them)
WARNING: If not abide them strictly, it may cause severe damage to the unit or the
people.
NOTE! If not abide them strictly, it may cause slight or medium damage to the unit or the
people.
This sign indicates that the items must be prohibited. Improper operation may cause
severe damage or death to people.
This sign indicates that the items must be observed. Improper operation may cause
damage to people or property.
WARNING!
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.
A warning to assure that partial units shall only be connected to an appliance suitable for the
same refrigerant.
This unit <model xxx> is a partial unit air conditioner, complying with partial unit requirements
of this International Standard, and must only be connected to other units that have been
confirmed as complying to corresponding partial unit requirements of this International
Standard.
The electrical interfaces shall be specified with purpose, voltage, and current and safety class
of construction.
Follow this instruction to complete the installation work. Please carefully read this manual
before unit startup and service.
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.
Before using the unit, please check if the pipe and wiring are correct to avoid water leakage,
refrigerant leakage, electric shock, or fire etc.
Don't climb the outdoor unit, and don't put anything on it. If you fall or turn it over, it will cause
damage.
Before performing related operations (such as maintenance inspection etc.) for the
equipment, tum off the unit, cut off the power supply and use relevant instrument to detect
the voltage at the power input terminal is zero and wait for the power indicators of the main
control board and the drive board are off. Otherwise, it may cause electric shock or injury.
The unit has low-power standby function. Under standby status, only the power indicator of
the main control board and the drive board are on.

GMV Heat Recovery DC Inverter VRF
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If conducting troubleshooting or maintenance for the modular unit, all outdoor units are
required to be de-energized or energized at the same time. It’s prohibited to energize or de-
energize some outdoor units.
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.
After connecting the power cord, please fix the electric box cover properly in order to avoid
accident.
Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock
and fire accidents.
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.
The leakage circuit breaker must be installed. If not, it may cause electric shock or Fire.
If refrigerant leakage happens during installation, please ventilate immediately. Poisonous
gas will emerge if the refrigerant gas meets fire.
Refrigerant gas is heavier than air and oxygen, especially in the basement. A large amount
of refrigerant leakage will cause the decrease in oxygen and then cause suffocation, which
will affect the health of people.
After all installations are completed, check whether there’s refrigerant leakage.
Do not install the unit in a flammable place. Otherwise, it will cause an explosion and affect
the health of people.
Disposal of packaging, transportation materials and other parts must comply with the relevant
regulations of the local country.
NOTES!
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.
Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the
compressor.
Electrify the unit 2 hours before operation. Please switch on for 2 hours before operation. Do
not cut off the power when 24 hours short-time halting (to protect the compressor).
The air conditioner should be grounded, and the power outlet must be equipped with a ground
wire to ensure that the air conditioner is effectively grounded through the power socket to
avoid the risk of electric shock.
Under cooling mode, please don't set the room temperature too low.
When the air conditioner is installed in a small room, take the necessary measures to avoid
the concentration of the refrigerant exceeding the limit value for safety.
When the external temperature is decreased, the heating performance of the unit will be
decreased. If so, please use another heating device for heating at the same time. (When you

GMV Heat Recovery DC Inverter VRF
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use a heating device with open fire in the same room, please always open the door or window
to keep the air circulation and avoid the lack of oxygen in the room.) Please do not put the
heating device with open fire at the air outlet, or put it under the air conditioner.
When the unit is turned on for heating, it takes time for the room temperature to rise because
the unit uses hot air circulation to heat the entire room.
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.
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.
Install the air conditioner in a solid place that can withstand its weight. Fully consider the
influence of strong winds, typhoons and earthquakes and reinforced installation. Improper
installation will cause the air conditioning unit to fall and then cause injury.
Please use the electric wire with specified specifications. Electrical installation work must
comply with local laws and regulations. Insufficient capacity or improper electrical operation
can cause electric shock or fire.
All electric wires must be confirmed to be connected well so that the wiring terminals and
electrical wires are not pulled by external force. Improper installation may cause fire.
After connecting the power cord, please fix the electric box cover properly in order to avoid
accident.
After confirming that the unit's power is off, you can touch the electrical components of the
unit, otherwise it will cause electric shock.
Do not modify the unit protection settings. If a pressure switch, end switch or other protective
device is short-circuited and forced to operate, it may cause a fire or explosion.
When installing the unit, make sure that the connection pipe is securely connected before
starting up the compressor. If the compressor is started up before the connection of the
connecting pipe is completed and the shut-off valve is opened, mixed air will cause the
system pressure to rise, which may cause compressor bursting accident and injury.
Heat exchanger fins are sharp. You may be injured if used it incorrectly. Please wear the
gloves to avoid injury.
Do not directly touch the refrigerant pipes during the operation and when the operation is
finished just now, including refrigerant pipes, compressors, and other refrigerant circulation
pipes. These pipes are hot and cold. It will scald and frostbite if directly contacts them. To
avoid injury, please wait until the pipes reach to normal temperature. Please wear gloves
when you must touch it.
Improper installation of drain pipes can result in water leakage and poor function.
R410A is a mixture. The refrigerant must be filled from the liquid pipe. If the refrigerant is filled
from the gas pipe, the composition of the refrigerant will change and the system can’t operate
normally.

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Take adequate measures to prevent small animals from making nests in the unit. Once small
animals touch electrical components, it may cause malfunction or fire hazard. Remind
customers to clean around the unit.
The installed indoor unit, outdoor unit, power cord and connection wire must be at least 1m
away from the TV or radio to avoid image interference or noise. If the radio wave is strong,
sometimes even if the distance is more than 1 m, it is not enough to avoid interference.
When disassembling the unit, handling refrigerants, oil and other components of the unit, it
must be in accordance with the relevant national/continental regulations.
Air conditioning units or heat pump units are appliances which are not easily accessible to
the public.
The design pressure is 4.3 MPa. The thickness of pipe for installation should comply with the
relevant national/continental regulations.
Do not connect the indoor unit and hot water generator at the same time under the same
branch of the mode converter, otherwise the unit will be damaged.
After the power cord is installed, please note to ensure that the power cord should not direct
touch the sheet metal of electric box.
NEVER TO DO
Never start up or shut off the air conditioner by means of directly plug or unplug the power
cord.
Do not insert fingers or objects into air outlet/inlet grille.
Do not operate this unit with wet hands.
Never short-circuit or cancel the pressure switch to prevent unit damage.
Never fail to comply with the nitrogen charge requirements. Charge nitrogen when welding
pipes.
Never spray or flush water towards unit, otherwise malfunction or electric shock may happen.
Never allow children to play around or on the top of the unit, otherwise injury may happen.
MUST TO DO
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.
Do not expose the unit to the moist or corrosive circumstances.
Do not directly touch the refrigerant leaking from the refrigerant pipe connection place, as it
may cause frostbite.
Please firstly connect the wired controller before energizing, otherwise wired controller can’t
be used.
The power cable diameter should be big enough. If the power cord and connection wire are
damaged, they must be replaced with the special cables.
Once all installations are completed, check whether there is refrigerant leakage.

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DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such waste
separately for special treatment is necessary.
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. Various
product lineups are provided with capacity range from 22.4kW to 246kW, 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. Gree
commercial multi VRF system is absolutely your best choice.
2.2 Product List
2.2.1 Combinations of Outdoor Units
Model
GMV-
VQ224WM/
C-X
GMV-
VQ280WM/
C-X
GMV-
VQ335WM/
C-X
GMV-
VQ400WM/
C-X
GMV-
VQ450WM/
C-X
GMV-
VQ504WM/
C-X
GMV-
VQ560WM/
C-X
GMV-
VQ615WM/
C-X
GMV-
VQ224WM/
C-X
◆
GMV-
VQ280WM/
C-X
◆
GMV-
VQ335WM/
C-X
◆
GMV-
VQ400WM/
C-X
◆
GMV-
VQ450WM/
C-X
◆
GMV-
VQ504WM/
C-X
◆
GMV-
VQ560WM/
C-X
◆
GMV-
VQ615WM/
C-X
◆
GMV-
VQ680WM/
C-X
◆◆
GMV-
VQ730WM/
C-X
◆◆
GMV-
VQ784WM/
C-X
◆◆

GMV Heat Recovery DC Inverter VRF
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Model
GMV-
VQ224WM/
C-X
GMV-
VQ280WM/
C-X
GMV-
VQ335WM/
C-X
GMV-
VQ400WM/
C-X
GMV-
VQ450WM/
C-X
GMV-
VQ504WM/
C-X
GMV-
VQ560WM/
C-X
GMV-
VQ615WM/
C-X
GMV-
VQ840WM/
C-X
◆◆
GMV-
VQ895WM/
C-X
◆◆
GMV-
VQ950WM/
C-X
◆◆
GMV-
VQ1015W
M/C-X
◆◆
GMV-
VQ1065W
M/C-X
◆◆
GMV-
VQ1119W M
/C-X
◆◆
GMV-
VQ1175WM
/C-X
◆◆
GMV-
VQ1230W
M/C-X
◆◆
GMV-
VQ1290W
M/C-X
◆◆◆
GMV-
VQ1345W
M/C-X
◆◆◆
GMV-
VQ1400W
M/C-X
◆◆◆
GMV-
VQ1455W
M/C-X
◆◆◆
GMV-
VQ1510W
M/C-X
◆◆◆
GMV-
VQ1565W
M/C-X
◆◆◆
GMV-
VQ1630W
M/C-X
◆◆◆
GMV-
VQ1680W
M/C-X
◆◆◆
GMV-
VQ1734W
M/C-X
◆◆◆
GMV-
VQ1790W
M/C-X
◆◆◆
GMV-
VQ1845W
M/C-X
◆◆◆
GMV-
VQ1905W
M/C-X
◆◆◆◆
GMV-
VQ1959W
M/C-X
◆◆◆◆