Gree GMV-280WL/C1-X User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
DC Inverter Multi VRF System
Models:
GMV-H224WL/A-X
GMV-H280WL/A-X
GMV-H335WL/A-X
GMV-224WL/C-X
GMV-280WL/C-X
GMV-335WL/C-X
GMV-280WL/C1-X
GMV-335WL/C1-X

To U s ers
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 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 responsibility
for their safety. Children should be supervised to ensure that they do not play with the
appliance.
(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 status (specify the situations before and after the error occurs).
(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 ................................................................................................. 3
2.1 Names of Main Parts ........................................................................................................ 3
2.2 Combinations of Indoor and Outdoor Units ....................................................................... 4
2.3 Operating Range .............................................................................................................. 4
3 Preparation before Installation ................................................................................. 4
3.1 Standard Parts.................................................................................................................. 4
3.2 Installation Site ................................................................................................................. 5
3.3 Piping Work Requirements ............................................................................................... 6
4 Installation Instruction .............................................................................................. 6
4.1 Dimension of Outdoor Unit and Mounting Hole ................................................................. 6
4.2 Connection Pipe ............................................................................................................... 7
4.3 Installation of Connection Pipe.........................................................................................11
4.4 Vacuum Pumping, Refrigerant Adding .............................................................................16
4.5 Electric Wiring..................................................................................................................17
5 Check Items after Installation and Test Operation ................................................ 20
5.1 Check Items after Installation...........................................................................................20
5.2 Test Operation and Debugging ........................................................................................21
6 Common Malfunctions and Troubleshooting........................................................ 26
7 Error Indication ........................................................................................................ 28
8 Maintenance and Care............................................................................................. 30
8.1 Outdoor Heat Exchanger .................................................................................................31
8.2 Drain Pipe........................................................................................................................31
8.3 Notices before Seasonal Use ..........................................................................................31
8.4 Maintenance after Seasonal Use .....................................................................................31
8.5 Parts Replacement ..........................................................................................................31
9 After-sales Service................................................................................................... 31

DC Inverter Multi VRF System
1
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 the
above special places, please adopt special air conditioner with anti-
corrosive or
anti-explosion function.
DC Inverter Multi VRF System shall only be connected to an appliance suitable for the same
refrigerant.
All outdoor units in Manual Cover is a partial unit, complying with partial unit of IEC
60335-2-40:2018, 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 interface shall comply with electrical security requirement, voltage shall be
380-415V(50/60Hz), current shall be referred to the table of “Selection of circuit breaker and
power cord” in Section 4.5.2, and safety class of construction is I.
Follow this manual to
complete the installation work.
Please read this manual
carefully before turning on or
repairing the unit.
Installation should be
performed by the distributor or
qualified technicians. Do not
install the product by yourself.
Improper installation may lead
to water leakage, electric
shock or fire hazard, etc.
Before installation, please
check whether the power
supply is complied with that
specified on the nameplate
and check the safety of the
power supply.
The air conditioner must be
grounded reliably for avoiding
electric shock. Please do not
connect the earthing wire to
gas pipe, water pipe, lightning
rod or telephone line.
Be sure to use special
accessories and parts for
installation to prevent water
leakage, electric shock and
fire hazard, etc.
If refrigerant leakage
happens, please ventilate the
room immediately.

DC Inverter Multi VRF System
2
Diameter of power cord
should be large enough. The
damaged power cord and
connection wire must be
replaced with special cables.
When the power cord is
connected, please fix the
electric box cover properly to
avoid safety accidents.
Never fail to comply with the
nitrogen-charging welding
process. Do charge nitrogen
when welding the pipes.
Never short circuit or cancel
the pressure switch to prevent
unit damage.
As for the unit controlled by
the wired controller, connect
the wired controller well firstly
and then energize the unit;
otherwise, the unit can't
operate normally.
When installation is finished,
please check whether the
drainage pipes, pipelines and
electric wires are connected
correctly to avoid water
leakage, refrigerant leakage,
electric shock or fire, etc.
Do not insert fingers or objects
into air outlet or air return
grille.
Open the door and window
frequently to keep good
ventilation for avoiding oxygen
deficit when gas heater or oil
heater is used in the room.
Never plug in or unplug the
power plug directly to turn on
or turn off the air conditioner.
Once the air conditioner is
turned on, it can be turned off
only after it has operated for
5min at least; otherwise, it will
affect the oil return of
compressor.
Do not allow children to
operate this air conditioner.
Do not operate this air
conditioner with wet hands.
The air conditioner can be
cleaned only when it has been
turned off and the power has
been cut off; otherwise, it may
cause electric shock or injury.
Never spray or flush water
towards the air conditioner;
otherwise, malfunction or
electric shock may happen.
Do not expose the air
conditioner to the moist or
corrosive environment.
Put through the power 8 hours
in advance before operation.
Do not cut off the power when
the air conditioner stops
operation for only about one
night (protect the
compressor).
Volatile liquid, such as diluent
or gasoline, will damage the
appearance of air conditioner.
Only soft dry cloth and wet
cloth dipped with neutral
detergent can be used to
clean the outer case of air
conditioner.
Under cooling mode, please
don't set the room
temperature too low; keep the
temperature difference
between indoor and outdoor
within 5°C (41°F).

DC Inverter Multi VRF System
3
If there are any abnormal
circumstances (such as
burning smell, etc.), please
turn off the unit and cut off the
main power supply
immediately, and then contact
Gree appointed service
center. If those abnormal
circumstances still exit, the
unit may be damaged and it
may lead to electric shock or
fire hazard.
Do not repair the unit by
yourself. Wrong maintenance
may cause electric shock or
fire hazard. Please contact
Gree appointed service center
for help.
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.
Install units according to national wiring codes.
If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified
person in order to avoid a hazard.
An all-pole disconnection device which has at least 3mm clearances in all poles, and disconnection must be
incorporated in the fixed wiring in accordance with the wiring rules.
Gree Electric Appliances, Inc. of Zhuhai will not assume responsibility for any personal injury or property loss caused
by improper installation, improper debugging, unnecessary repair or not following the instructions of this manual.
2 Product Introduction
Gree Multi VRF System adopts inverter compressor technology. By changing the displacement
of compressor, stepless capacity regulation within range of 10%~100% can be realized. Various
product lineups are provided with capacity range from 22.4kW to 35kW, which can be widely used in
residential, commercial and working area and especially applicable to places with big load change.
Gree residential air conditioner is absolutely your best choice.
2.1 Names of Main Parts
Fig.2.1

DC Inverter Multi VRF System
4
No.
①②③④⑤
Name
Motor
Fan blade
Electric box assembly
Gas pipe valve
Liquid pipe valve
2.2 Combinations of Indoor and Outdoor Units
(1) See below the number of indoor units that can be connected to the outdoor unit.
(2) The total capacity of indoor units should be within 50%~135% of that of the outdoor unit.
Model
Max sets of connectable IDUs
GMV-H224WL/A-X
13
GMV-H280WL/A-X
17
GMV-H335WL/A-X
20
GMV-224WL/C-X
13
GMV-280WL/C-X
17
GMV-335WL/C-X
20
GMV-280WL/C1-X 17
GMV-335WL/C1-X
20
(3) Can be connected to various indoor units. When any one of the indoor units receives
operating command, outdoor unit will start operation as per required capacity. When all
indoor units stop, outdoor unit will be shut off.
2.3 Operating Range
Cooling
Outdoor temperature: -5 ~52°C
Heating Outdoor temperature: -20 ~27°C
3 Preparation before Installation
NOTE: Graphics here are only for reference. Please refer to actual products. Unspecified
dimensions are all in mm.
3.1 Standard Parts
Please use the supplied standard parts as required.
Parts for Outdoor Unit
No.
Name
Appearance
Qty
Remark
1 User Manual 1 —
2 Wiring (match with resistance) 1 Must be connected to the last IDU
of communication connection
3 Liquid side connection pipe 1
This part is included in the
following models:
GMV-H224WL/A-X
GMV-224WL/C-X
4 Gas side connection pipe 1
This part is included in the
following models:
GMV-H224WL/A-X
GMV-224WL/C-X
5 Drainage hole cap 3 —
6 Drainage joint 1 —

DC Inverter Multi VRF System
5
Parts for Outdoor Unit
No.
Name
Appearance
Qty
Remark
7 Magnetic ring 1 Please refer to section 4.5.2 for
the detailed operation method.
3.2 Installation Site
Forbidden item! Improper operation might lead to personal injury or even death.
Item needs to be followed. Improper operation might lead to personal injury or property damage.
Select a location which is strong
enough to hold unit’s weight so
that unit can stand still and
erect.
The installation position should
withstand strong wind, typhoon
and earthquake. The unit must be
installed stably.
Please keep the unit away from
inflammable, explosive and
corrosive gas or waste gas.
Make sure the location has space
for heat exchange and
maintenance so that unit can
operate reliably with good
ventilation.
ODU and IDU should stay as
close as possible to shorten the
length of refrigerant pipe and
reduce bend angles.
Select a location which is out of
children’s reach. Keep the unit
away from children.
If the ODU is totally surrounded by walls, please refer to Fig.3.1 for space dimension:
Fig.3.1

DC Inverter Multi VRF System
6
3.3 Piping Work Requirements
Refer to the table below for piping work requirements:
R410A Refrigerant System
Outer diameter (mm/inch)
Wall thickness(mm)
Φ6.35(1/4)
≥0.8
Φ9.52(3/8)
≥0.8
Φ12.7(1/2)
≥0.8
Φ15.9(5/8) ≥1.0
Φ19.05(3/4)
≥1.0
Φ22.2(7/8)
≥1.2
Φ25.4(8/8)
≥1.2
4 Installation Instruction
NOTE: Graphics here are only for reference. Please refer to actual products. Unspecified
dimensions are all in mm.
4.1 Dimension of Outdoor Unit and Mounting Hole
Unit Outline and Installation Dimension(mm).
Fig.4.1
Unit: mm
Model
A
B
C
D
E
GMV-H224WL/A-X
940
320
1430
632
350
GMV-H280WL/A-X
940
460
1615
610
486
GMV-H335WL/A-X
940
460
1615
610
486
GMV-224WL/C-X
940
320
1430
632
350
GMV-280WL/C-X
940
460
1615
610
486
GMV-335WL/C-X
940
460
1615
610
486
GMV-280WL/C1-X
940
460
1615
610
486
GMV-335WL/C1-X
940
460
1615
610
486