Gree GMV-224WM/G-U User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
GMV DC Inverter VRF
Models:
GMV-224WM/G-U
GMV-280WM/G-U
GMV-335WM/G-U
……
GMV-2720WM/G-U

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. Obey all safety messages that follow this symbol to avoid
possible injury or death.
This mark indicates procedures which, if improperly performed, might lead
to the death or serious injury of the user.
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.
(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.
The appliance shall not be installed in the laundry. This appliance is not intended for use by
persons(including children) with reduced physical. Sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety. Children should be supervised to
ensure that they do not play with the appliance.
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 Notices (Please be sure to abide them)··················································· 1
2 Product Introduction······················································································ 4
2.1 Product Features·····························································································4
2.2 Product List ····································································································4
2.3 Names of Main Parts ························································································6
2.4 The Range of Production Working Temperature······················································7
2.5 Standard Parts ································································································7
3 Product Installation ······················································································· 8
3.1 Safety Precautions for Installing, Repairing and Moving Units ····································8
3.2 Outdoor Unit Installation ····················································································9
3.3 Pipeline Design ····························································································· 18
3.4 Pipeline Installation and Insulation····································································· 25
3.5 Static Pressure Ventilation Pipe Installation·························································· 31
3.6 Vacuum and Drying of Refrigeration System ························································ 32
3.7 Additional Refrigerant Charging ········································································ 34
3.8 Electrical Installation······················································································· 39
3.9 Communication Line Connection······································································· 42
3.10 Check Items after Installation·········································································· 48
4 Debugging and Operation ············································································ 48
4.1 Preparation before Test Run············································································· 48
4.2 Notices for Unit Debugging ·············································································· 49
4.3 Basic Introduction for Engineering Debugging ······················································ 52
4.4 Parameter Judgment Reference Value for Unit Normal Operation····························· 58
5 Operation Instruction··················································································· 59
6 Maintenance ····························································································· 60
6.1 Heat Exchanger of Outdoor Unit ······································································· 60
6.2 Drain Pipe···································································································· 60
6.3 Precautions at the Beginning of Using Season ····················································· 60
6.4 Maintenance at the End of Using Season···························································· 60
6.5 Parts Replacement ························································································ 60
7 Troubleshooting ························································································· 61
7.1 Common Malfunctions and Troubleshooting ························································ 61
7.2 Error Indication ····························································································· 63
8 After-sales Service ····················································································· 66

GMV DC Inverter VRF
1
1 Safety Notices (Please be sure to abide them)
If not abide them strictly, it may cause severe damage to the unit or the
people.
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.
(1) This product can’t be installed at corrosive, inflammable o
r 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) A warning to assure that partial units shall only be connected to an appliance suitable for the
same refrigerant.
(3) 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.
(4) The electrical interfaces shall be specified with purpose, voltage, current and safety class of
construction.
(5) Follow this instruction to complete the installation work. Please carefully read this manual
before unit startup and service.
(6) 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.
(7) Before using the unit, please check if the pipe and wiring are correct to avoid water leakage,
refrigerant leakage, electric shock, or fire etc.
(8) Don't climb the outdoor unit, and don't put anything on it. If you fall or turn it over, it will cause
damage.
(9) Before performing related operations (such as maintenance, inspection, etc.) for the
equipment, the unit must be turned off and the power supply must be cut off. Moreover, use
the relevant instrument check whether the voltage at the power input terminal is zero. After
that, you can perform the operation. Otherwise it will cause electric shock or injury (the unit
has low-power standby function. Only the main control board indicator is on under standby
status).
(10) 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.
(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.
(12) After connecting the power cord, please fix the electric box cover properly in order to avoid
accident.
(13) Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock
and fire accidents.

GMV DC Inverter VRF
2
(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.
(15) The leakage circuit breaker must be installed. If not, it may cause electric shock or Fire.
(16) If refrigerant leakage happens during installation, please ventilate immediately. Poisonous gas
will emerge if the refrigerant gas meets fire.
(17) 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.
(18) After all installations are completed, check whether there’s refrigerant leakage.
(19) Do not install the unit in a flammable place. Otherwise, it will cause an explosion and affect the
health of people.
(20) Disposal of packaging, transportation materials and other parts must comply with the relevant
regulations of the local country.
(1) 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.
(2) Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the
compressor.
(3) 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).
(4) 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.
(5) Under cooling mode, please don't set the room temperature too low.
(6) 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.
(7) 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
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.
(8) 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.
(9) 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.
(10)
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.
(11) 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.
(12) 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.
(13) 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.
(14) After connecting the power cord, please fix the electric box cover properly in order to avoid
accident.
(15) After confirming that the unit's power is off, you can touch the electrical components of the
unit, otherwise it will cause electric shock.
(16) 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.

GMV DC Inverter VRF
3
(17) 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.
(18) Heat exchanger fins are sharp. You may be injured if used it incorrectly. Please wear the
gloves to avoid injury.
(19) 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.
(20) Improper installation of drain pipes can result in water leakage and poor function.
(21) 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.
(22) 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.
(23) 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.
(24) When disassembling the unit, handling refrigerants, oil and other components of the unit, it
must be in accordance with the relevant national/continental regulations.
(25) Air conditioning units or heat pump units are appliances which are not easily accessible to the
public.
(26) The design pressure is 4.3 MPa. The thickness of pipe for installation should comply with the
relevant national/continental regulations.
(27) 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.
(28) After the power cord is installed, please note to ensure that the power cord should not direct
touch the sheet metal of electric box.
(29) Never start up or shut off the air conditioner by means of directly plug or unplug the power
cord.
(30) Do not insert fingers or objects into air outlet/inlet grille.
(31) Do not operate this unit with wet hands.
(32) Never short-circuit or cancel the pressure switch to prevent unit damage.
(33) Never fail to comply with the nitrogen charge requirements. Charge nitrogen when welding
pipes.
(34) Never spray or flush water towards unit, otherwise malfunction or electric shock may happen.
(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.
(38) Do not directly touch the refrigerant leaking from the refrigerant pipe connection place, as it
may cause frostbite.
(39) Please firstly connect the wired controller before energizing, otherwise wired controller can’t
be used.
(40) 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.
(41) Once all installations are completed, check whether there is refrigerant leakage.
(42) The maximum operating pressure should be considered when connecting to any
condenser unit or evaporator unit.

GMV DC Inverter VRF
4
2 Product Introduction
2.1 Product Features
Gree Multi VRF Modular System adopts inverter compressor technology. According to change
the displacement of compressor, stepless capacity regulation within range of 10%-100% can be
realized. Various product lineup is provided with capacity range from 22.4kW to 272kW, which can be
widely used in working area and especially applicable to the place with variable load change.
2.2 Product List
2.2.1 Combinations of Outdoor Units
Model GMV-224W
M/G-U
GMV-280W
M/G-U
GMV-335W
M/G-U
GMV-400W
M/G-U
GMV-450W
M/G-U
GMV-504W
M/G-U
GMV-560W
M/G-U
GMV-615W
M/G-U
GMV-680W
M/G-U
GMV-224W
M/G-U
◆
GMV-280W
M/G-U
◆
GMV-335W
M/G-U
◆
GMV-400W
M/G-U
◆
GMV-450W
M/G-U
◆
GMV-504W
M/G-U
◆
GMV-560W
M/G-U
◆
GMV-615W
M/G-U
◆
GMV-680W
M/G-U
◆
GMV-735W
M/G-U
◆ ◆
GMV-785W
M/G-U
◆ ◆
GMV-839W
M/G-U
◆ ◆
GMV-895W
M/G-U
◆ ◆
GMV-950W
M/G-U
◆ ◆
GMV-1015
WM/G-U
◆ ◆
GMV-1064
WM/G-U
◆ ◆
GMV-1119
WM/G-U
◆ ◆
GMV-1175
WM/G-U
◆ ◆
GMV-1230
WM/G-U
◆◆
GMV-1295
WM/G-U
◆ ◆
GMV-1360
WM/G-U
◆◆

GMV DC Inverter VRF
5
Model GMV-224W
M/G-U
GMV-280W
M/G-U
GMV-335W
M/G-U
GMV-400W
M/G-U
GMV-450W
M/G-U
GMV-504W
M/G-U
GMV-560W
M/G-U
GMV-615W
M/G-U
GMV-680W
M/G-U
GMV-1399
WM/G-U
◆ ◆ ◆
GMV-1455
WM/G-U
◆ ◆ ◆
GMV-1510
WM/G-U
◆ ◆◆
GMV-1565
WM/G-U
◆ ◆◆
GMV-1623
WM/G-U
◆◆ ◆
GMV-1679
WM/G-U
◆ ◆ ◆
GMV-1734
WM/G-U
◆ ◆◆
GMV-1790
WM/G-U
◆ ◆◆
GMV-1845
WM/G-U
◆◆◆
GMV-1910
WM/G-U
◆◆ ◆
GMV-1975
WM/G-U
◆ ◆◆
GMV-2040
WM/G-U
◆◆◆
GMV-2069
WM/G-U
◆ ◆ ◆◆
GMV-2129
WM/G-U
◆ ◆ ◆ ◆
GMV-2190
WM/G-U
◆ ◆ ◆◆
GMV-2245
WM/G-U
◆ ◆◆◆
GMV-2295
WM/G-U
◆◆◆ ◆
GMV-2350
WM/G-U
◆◆ ◆◆
GMV-2414
WM/G-U
◆ ◆◆ ◆
GMV-2470
WM/G-U
◆ ◆◆ ◆
GMV-2525
WM/G-U
◆◆◆ ◆
GMV-2590
WM/G-U
◆◆ ◆◆
GMV-2655
WM/G-U
◆ ◆◆◆
GMV-2720
WM/G-U
◆◆◆◆
NOTICE! “◆” means a basic module.

GMV DC Inverter VRF
6
2.2.2 Combinations of Indoor and Outdoor Units
(1) The following table indicates the number of IDU for ODU：
ODU model
Max number of connectable
IDU (unit)
ODU model
Max number of connectable
IDU (unit)
GMV-224WM/G-U 13 GMV-1510WM/G-U 71
GMV-280WM/G-U
16
GMV-1565WM/G-U
74
GMV-335WM/G-U 19 GMV-1623WM/G-U 77
GMV-400WM/G-U 23 GMV-1679WM/G-U 80
GMV-450WM/G-U 26 GMV-1734WM/G-U 80
GMV-504WM/G-U 29 GMV-1790WM/G-U 80
GMV-560WM/G-U
33
GMV-1845WM/G-U
80
GMV-615WM/G-U 36 GMV-1910WM/G-U 80
GMV-680WM/G-U 39 GMV-1975WM/G-U 80
GMV-735WM/G-U 43 GMV-2040WM/G-U 80
GMV-785WM/G-U 46 GMV-2069WM/G-U 80
GMV-839WM/G-U
50
GMV-2129WM/G-U
80
GMV-895WM/G-U 53 GMV-2190WM/G-U 80
GMV-950WM/G-U 56 GMV-2245WM/G-U 80
GMV-1015WM/G-U 59 GMV-2295WM/G-U 80
GMV-1064WM/G-U 63 GMV-2350WM/G-U 80
GMV-1119WM/G-U
64
GMV-2414WM/G-U
80
GMV-1175WM/G-U 64 GMV-2470WM/G-U 80
GMV-1230WM/G-U 64 GMV-2525WM/G-U 80(85)*
GMV-1295WM/G-U 64 GMV-2590WM/G-U 80(90)*
GMV-1360WM/G-U 64 GMV-2655WM/G-U 80(95)*
GMV-1399WM/G-U
66
GMV-2720WM/G-U
80(100)*
GMV-1455WM/G-U 69 — —
NOTICE! *The maximum connection quantity of indoor unit in the brace should be engineering
customized.
(2) The total capacity of indoor units should be within 50%~135% of that of outdoor units.
(3) When any one of the indoor units receives the operation command, the outdoor unit starts
running according to the required capability; when all indoor unit stops running, the outdoor
unit stops operation.
2.3 Names of Main Parts
Fig.2.3.1

GMV DC Inverter VRF
7
2.4 The Range of Production Working Temperature
—
Cooling
Heating
Ambient temperature
-15℃*(5℉)~48℃(118.4℉)DB -25℃(-13℉)~24℃(75.2℉)DB
Indoor temperature
14℃(57.2℉)~25℃(77℉)WB 15℃(59℉)~27℃(80.6℉)DB
Indoor humidity
≤80%
*NOTICE!
Cooling at -15 ℃(5℉)~-5 ℃(23 ℉) is conditional. Please inquire our engineers for more
information. Generally, the lowest operating temperature for cooling is-5℃(23℉).
When the indoor units are all VRF fresh air processor, the unit operating range is as follows:
Cooling Ambient temperature: 16℃(60.8℉)~45℃(113℉)
Heating Ambient temperature: -7℃(19.4℉)~16℃(60.8℉)
NOTICE!
If exceeding the temperature range for working, the product may be damaged, which is 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
1 Owner's Manual 1 —
2 Wiring (match
with resistance) 1
Must be connected to
the last IDU of
communication
connection
3 L-shape pipe 1 Used for connecting
pipes

GMV DC Inverter VRF
8
3 Product Installation
3.1 Safety Precautions for Installing, Repairing and Moving Units
(1) The unit should not be installed in places with high environmental pH, high voltage fluctuations,
vehicles and ships.
(2) Do not touch the fins of the heat exchanger. Improper touch can cause damage or injury.
(3) Do not mix any substances except the refrigerant when installing or moving the refrigerant circuit,
and do not leave any air in the pipe. If air or other substances are mixed in the refrigerant circuit,
the system pressure will rise and it will cause compressor explosion.
(4) Do not charge the refrigerant other than the specified one when installing or moving the unit.
Otherwise, it may cause problems such as poor operation, malfunction, mechanical fault, etc.,
and even cause major safety accident.
(5) When moving or repairing the unit, be sure to use the pressure gauge. First, perform the cooling
operation, and then completely close the high pressure side valve (liquid valve). When the
pressure gauge reads 0~0.05MPa, completely close the low pressure side valve (air valve), and
then immediately stop operation and cut off the power.
(6) When recovering the refrigerant, it is necessary to ensure that the connection pipe can be
disassembled only after the liquid valve and the air valve are completely closed and the power is
turned off. If disassembling the connection pipe when the power hasn’
t been cut off and the
compressor still running, the air will be mixed into the system and then the pressure will rise,
which will cause compressor explosion.
(7) When installing the unit, make sure that the connection pipe is securely connected before turning
on the compressor. If the compressor is turned on before the connection of the connection pipe is
completed and the shut-
off valve is opened, the air will be mixed into the system and then the
pressure will rise, which will cause compressor explosion.
(8) Wiring between indoor unit and outdoor unit must be properly connected by adopting the
specified electric wires and the terminals should be fixed well and not affected by external forces.
Poor connection or fixing may cause a fire accident.
(9) No connection is allowed in the middle of the wire. When the length of the connection wire is not
enough, please contact the designated service store to re-
equip a dedicated electric wire with
sufficient length.

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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-224WM/G-U、GMV-280WM/G-U、GMV-335WM/G-U
unit.
Unit: mm(inch)
Fig.3.2.1

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No. Name
Pipe diameter
GMV-224WM/G-U
GMV-280WM/G-U
GMV-335WM/G-U
❶
Gas pipe
Φ19.05(3/4)
Φ22.2(7/8)
Φ25.4(1)
❷
Liquid pipe
Φ9.52(3/8)
Φ9.52(3/8)
Φ12.7(1/2)
❸Pipe and wiring passing
hole (L×W)
196×69
(7-11/16×2-11/16)
196×69
(7-11/16×2-11/16)
196×69
(7-11/16×2-11/16)
❹
Hoist hole
Φ50(1-15/16)
Φ50(1-15/16)
Φ50(1-15/16)
Outline and Physical Dimension of GMV-400WM/G-U, GMV-450WM/G-U, GMV-504WM/G-U,
GMV-560WM/G-U, GMV-615WM/G-U, GMV-680WM/G-U unit.
Unit: mm(inch)
Fig.3.2.2

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No. Name
Pipe diameter
GMV-400WM/G-U
GMV-450WM/G-U
GMV-504WM/G-U
❶
Gas pipe
Φ25.4(1)
Φ28.6(1-1/8)
Φ28.6(1-1/8)
❷
Liquid pipe
Φ12.7(1/2)
Φ12.7(1/2)
Φ15.9(5/8)
❸Pipe and wiring passing
hole (L×W)
234×69
(9-3/16×2-11/16)
234×69
(9-3/16×2-11/16)
234×69
(9-3/16×2-11/16)
❹
Hoist hole
Φ50(1-15/16)
Φ50(1-15/16)
Φ50(1-15/16)
No. Name
Pipe diameter
GMV-560WM/G-U
GMV-615WM/G-U
GMV-680WM/G-U
❶
Gas pipe
Φ28.6(1-1/8)
Φ28.6(1-1/8)
Φ28.6(1-1/8)
❷
Liquid pipe
Φ15.9(5/8)
Φ15.9(5/8)
Φ15.9(5/8)
❸Pipe and wiring passing
hole (L×W)
234×69
(9-3/16×2-11/16)
234×69
(9-3/16×2-11/16)
234×69
(9-3/16×2-11/16)
❹
Hoist hole
Φ50(1-15/16)
Φ50(1-15/16)
Φ50(1-15/16)
3.2.2 Select Installation Position
Conditions for selecting the installation position
(1) 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.
(2) Fully consider the influence of strong winds, typhoons and earthquakes when selecting the
installation site, and strengthen the installation.
(3) The influence of flammable, explosive, corrosive gases or exhaust gases should be avoided.
(4) Ensure that there is a certain space for heat exchanging and maintenance, so that the
ventilation is smooth and the running is reliable.
(5) Outdoor units and indoor units should be as close as possible to minimize the length and
angle of the cooling pipes.
(6) Do not allow children to approach the unit. Preventive measures should be taken to prevent
children from contacting the unit.
(7) The unit should not be installed in places with high environmental pH or high voltage
fluctuations, and places such as vehicles and ships.
(8) Do not install the unit at the place where is close to the equipment that generates
electromagnetic waves. Electromagnetic waves can affect the control system and cause
fault.

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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.
NOTICE! The photo is only for reference. Please refer to the installation locale.
Fig.3.2.3
(2) Anti-monsoon installation requirements for unit connecting exhaust duct:
Fig.3.2.4

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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.3.2.5

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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.3.2.6
Unit: mm(inch)
Status
A+B+C+D
A+B
Status 1
a≥300(11-13/16)
b≥100(3-15/16)
c≥100(3-15/16)
d≥500(19-11/16)
a≥300(11-13/16)
b≥300(11-13/16)
Status 2
a≥300(11-13/16)
b≥100(3-15/16)
c≥100(3-15/16)
d≥500(19-11/16)
e≥100(3-15/16)
a≥300(11-13/16)
b≥300(11-13/16)
e≥400(15-3/4)
Status 3
a≥300(11-13/16)
b≥100(3-15/16)
c≥100(3-15/16)
d≥500(19-11/16)
e≥200(7-7/8)
f≥600(23-5/8)
—

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Status
A+B+C+D
A+B
Status 4
a≥300(11-13/16)
b≥100(3-15/16)
c≥100(3-15/16)
d≥100(3-15/16)
e≥200(7-7/8)
f≥500(19-11/16)
—
Status 5
a≥300(11-13/16)
b≥500(19-11/16)
c≥100(3-15/16)
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℃(98℉). If the outdoor temperature exceeds 35℃(98℉) or the heat load
is large, and all outdoor units are operating at an excess capacity, the space at the suction
side should be increased.
(2) When disassembling or installing the unit, the operation may be affected by obstacles, and
the distance from the unit to the wall surface may be appropriately increased.
(3) When two or more units are installed and placed, the operation may be affected by the
adjacent units. The distance between the two adjacent units is “e” ≥ 100mm(3-15/16inch).
Unit: mm(inch)
Fig.3.2.7
(4) When the unit is installed in place around by walls, the height of left and right side walls is
not limited; the height of air inlet side wall is below 500mm(19-11/16inch), and the height of
front side wall is below 1500mm(59-1/16inch).The unit is installed in a space with only two
walls, A and B, and the height of the B wall is not limited.
(5) If the wall exceeds the above value, increase the space as follows.

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Unit: mm(inch)
Fig.3.2.8
(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(118-1/8inch)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 (59-1/16inch) or more from the top wall, as shown in the fig. as below. If the
size is less than 1500mm (59-1/16inch), or if the space around the unit is not open, you need to
connect an exhaust duct for smooth ventilation, as shown below.
Unit: mm(inch)
Fig.3.2.9
3.2.4 Installation Space Requirements for Equipment Floor
When the outdoor unit is installed in the equipment floor, it needs to connect an air exhaust duct.
The opening ratio of the shutters in the equipment floor is not less than 60%, and the horizontal
angle of louvers is less than 20°.