Gree GMV-N56G/A3A-K User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi Variable Air Conditioners
Wall Mounted Type Indoor Unit
Models:
GMV-N22~71G/A3A-K
GMV-N22~71G/A2A-K
GMV-N22~71G/A4A-K
GMV-N22~71G/A8A-K
GMV-N22~71G/C9A-K
GMV-N22~71G/E3A-K
GMV-N22~71G/A3A-D
GMV-N22~71G/A8A-D
GMV-N22~71G/E3A-D
GMV-N22~71G/B3A-D
GMV-ND22~100G/A3A-T
GMV-ND22~100G/A8A-T

To Users
Thank you for selecting Gree 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 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.
(5) If the product needs to be installed, moved or maintained, please contact our designated
dealer or local service center for professional support. Users should not disassemble or
maintain the unit by themselves, otherwise it may cause relative damage, and our company
will bear no responsibilities.
(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. If
there is adjustment in the product, please subject to actual product.

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 ) ........................................................ 1
2 Product Introduction ......................................................................................... 3
2.1 Outline of the Unit and Main Parts.......................................................................................... 3
2.2 Rated Operating Condition....................................................................................................... 4
3 Preparations for Installation ............................................................................. 4
3.1 Location for Installation.............................................................................................. 4
3.2 Schematic diagram of installation spaces.................................................................. 4
3.3 Requirements for Communication Line ..................................................................... 5
3.4 Wiring Requirements ................................................................................................. 6
4 Installation Instructions .................................................................................... 8
4.1 Installation of Indoor Unit........................................................................................... 8
4.2 The installation of the rear panel ............................................................................... 9
4.3 Preparation of the piping hole.................................................................................... 9
4.4 Installation of the drainage pipe................................................................................. 9
4.5 Installation the connection pipes ............................................................................. 10
5 Wiring Work...................................................................................................... 10
5.1 Connect Cables and Terminals of Wiring Board ...................................................... 10
5.2 Power Cord Connection ...........................................................................................11
5.3 Connection of Communication Line of IDU and ODU ..............................................11
5.4 Connection of Communication Line of Wired Controller.......................................... 12
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network.............. 12
5.6 Installation of the indoor unit.................................................................................... 13
6 The Best Usage Method .................................................................................. 13
7 Maintenance Method ....................................................................................... 14
7.1 Cleaning panel......................................................................................................... 14
7.2 Cleaning the air filters.............................................................................................. 14
7.3 Check before the usage season.............................................................................. 15
7.4 Check after the usage season................................................................................. 15
8 Table of Error Codes for Indoor Unit.............................................................. 15
9 Malfunction Analyzing ..................................................................................... 16
9.1 Service center.......................................................................................................... 17
9.2 After-sales service ................................................................................................... 17
10 Adjusting Method Of The Air Direction ........................................................ 17
10.1 Adjusting air direction up and down....................................................................... 17
10.2 Adjusting air direction left and right........................................................................ 17

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
1
1 Safety Notices (Please be sure to abide )
Warning: If not abide strictly, it may cause severe damage to the unit or the people.
Note: If not abide strictly, it may cause slight or medium damage to the unit or the
people.
This sign indicates that the operation 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 Multi VRF System shall only be connected to an appliance suitable for the same
refrigerant.
All 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
220-240(50Hz) or 208-230(60Hz), current shall be referred to the table of “Wiring
Requirements” in Section 3.4, and safety class of construction is I.
Follow this instruction to
complete the installation
work. Please carefull 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
waterleakage, electric
shock or fire disaster etc.
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.
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
telephoneline.
Be sure to use the
exclusive accessory and
part to prevent the water
leakage, electric shock
and fire accidents.
If refrigerant leakage happens
during installation, please
ventilate immediately.
Poisonous gas will emerge if
the refrigerant gas meets fire.
Wire size of power cord
should be large enough.
The damaged power cord
and connection wire
should be replaced by
exclusive cable.
After connecting the power
cord, please fix the electric
box cover properly in order to
avoid accident.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
2
Never fail to comply with
the nitrigen charge
requirements.Charge
nitrogen when welding
pipes.
Never short-circiut or cancel
the pressure switch to prevent
unit damage.
Please firstly connect the
wired controller before
energization,otherwise
wired controller can not be
used.
Before using the unit, please
check if the piping and wiring
are correct to avoid water
leakage,refrigerant leakage,
electric shock, or fire etc.
Do not insert fingers or
objects into air outlet/inlet
grille.
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.
Never start up or shut off
the air conditioner by
means of directly plug or
unplug the power cord.
Turn off the unit after it runs at
least five minutes; otherwise it
will influence oil return of the
compressor.
Do not allow children
operate this unit.
Do not operate this unit with
wet hands.
Turn off the unit or
cut off the power supply
before cleaning the unit,
otherwise electric shock or
injury may happen.
Never spray or flush water
towards unit, otherwise
malfunction or electric shock
may happen.
Do not expose the unit to
the moist or corrosive
circumstances.
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).
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.
Under cooling mode, please
don't set the room
temperature too low and keep
the temperature difference
between indoor and outdoor
unit within 5.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
3
If anything abnormal
happens (such as burning
smell), lease power off the
unit and cut off the main
power supply, and then
immerdiately contact Gree
appointed service center.If
abnormality keeps going,
the unit might be damaged
and lead to electric shock
or fire.
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.
Any personal injury or property loss caused by improper installation, improper debug,
unnecessary repair or not following the instructions of this manual should not be the responsibility of
Gree Electric Appliances, Inc. of Zhuhai.
2 Product Introduction
2.1 Outline of the Unit and Main Parts
Fig .2.1

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
4
Note：
The appearances will be different by the different models of air conditioners.
No.
Part Name
No.
Part Name
①
Surface panel
④
Guide louver
②
Filter
⑤
Drain pipe
③
Wiring cover
—
—
2.2 Rated Operating Condition
Item
Indoor Condition
Outdoor Condition
DBTemperature(°C)
WBTemperature(°C)
DBTemperature(°C)
WBTemperature(°C)
Rated Cooling
27
19
35
24
Rated Heating
20
15
7
6
3 Preparations for Installation
3.1 Location for Installation_
(1) The appliance shall not be installed in the laundry.
(2) The indoor unit should be installed at 2.5m or higher above the floor.
(3) The top holder must be strong enough to support unit’s weight.
(4) Drain pipe can drain water out easily.
(5) There is no obstacle at inlet or outlet. Please ensure good air circulation.
(6) Keep the unit away from heating source, inflammable gas or smoke.
3.2 Schematic diagram of installation spaces
Unit: mm
Fig 3.2.1
Notes:
①The unit shall be installed by the professional personnel according to this installation
instruction to ensure proper use.
②Please contact the local Gree appointed service center before installation. Any
malfunctioncaused by the unit that is not installed by the Gree appointed service center

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
5
would probably not be dealt with on time because of the inconvenience of the business
contact.
③It should be guided under the professional personnel when the air conditioner unit is moved
to other place.
3.3 Requirements for Communication Line
Note:
If the unit is installed in the place with strong electromagnetic interference, shielded wire must be
applied on the communication wire between indoor unit and wired controller. Twisted pair line with
shielding function must be applied on the communication wire between indoor unit and indoor unit
(outdoor unit).
3.3.1 Select communication line for indoor unit and wired controller
Fig 3.3.1
Material type
Total length of
communication line between
indoor unit and wired
controller L (m/feet)
Wire size
(mm2/AWG)
Material
Standard Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤250m
(L≤820-1/5feet)
2×0.75~2×1.
25
(2×AWG18~2
×AWG16)
IEC
60227-5-20
07
1.Total length of communication line
can't exceed 250m (820-1/5feet).
2.The cord shall be Circular cord (the
cores shall be twisted together).
3.If unit is installed in places with
inte
nse magnetic field or strong
interference, it is necessary to use
shielded wire.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
6
3.3.2 Select communication line for indoor unit and indoor unit (outdoor unit)
Fig 3.3.2
Material Type
Total Length L (m/feet) of
Communication Cable
between Indoor Unit a
nd
Indoor (Outdoor) Unit
Wire size
(mm2/AWG) Material Standard Remarks
Light/Ordinar
y polyvinyl
chloride
sheathed
cord. (60227
IEC 52
/60227 IEC
53)
L≤1000m
(L≤3280-5/6feet)
≥2×0.75
(≥2×AWG18) IEC 60227-5-2007
1.If the wire diameter is
enlarged to 2×1 mm2
(2×AWG16), the total
communication line length
can reach 1500 m
(4921-1/4feet).
2.The cord shall be Circular
cord (the cores shall be
twisted together).
3.If unit is installed in places
with intense magnetic field or
strong interference, it is
necessary to use shielded
wire.
3.4 Wiring Requirements
Model Power Cord Size
Air Switch
apacity
(A)
Minimum
Sectional
Area of
Ground
Wire(mm
2
)
Minimum
Sectional Area
of Power
Cord(mm2)
GMV-N22G/A3A-K, GMV-N22G/A2A-K
GMV-N22G/A4A-K, GMV-N22G/A8A-K
GMV-N22G/C9A-K, GMV-N22G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N28G/A3A-K, GMV-N28G/A2A-K
GMV-N28G/A4A-K, GMV-N28G/A8A-K
GMV-N28G/C9A-K, GMV-N28G/E3A-K
220-240V~ 50Hz 6 1 1
GMV-N36G/A3A-K, GMV-N36G/A2A-K
GMV-N36G/A4A-K, GMV-N36G/A8A-K
GMV-N36G/C9A-K, GMV-N36G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N45G/A3A-K, GMV-N45G/A2A-K
GMV-N45G/A4A-K, GMV-N45G/A8A-K
GMV-N45G/C9A-K, GMV-N45G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N50G/A3A-K, GMV-N50G/A2A-K
GMV-N50G/A4A-K, GMV-N50G/A8A-K
GMV-N50G/C9A-K, GMV-N50G/E3A-K
220-240V ~ 50Hz 6 1 1