Gree GMV-ND50C/A-T GMV-ND22PHS/B-T User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Super High Static Pressure Duct Type
Indoor Unit
Models:
GMV-ND22PHS/B-T GMV-ND25PHS/B-T GMV-ND28PHS/B-T GMV-ND32PHS/B-T
GMV-ND36PHS/B-T GMV-ND40PHS/B-T GMV-ND45PHS/B-T GMV-ND50PHS/B-T
GMV-ND56PHS/B-T GMV-ND63PHS/B-T GMV-ND71PHS/B-T GMV-ND80PHS/B-T
GMV-ND90PHS/B-T GMV-ND100PHS/B-T GMV-ND112PHS/B-T GMV-ND125PHS/B-T
GMV-ND140PHS/B-T GMV-ND160PHS/B-T

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 is not intended for use by persons (including children) with reduced
physical, sensoryor 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, whichmay
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) For personal injury or property loss and damage caused by improper operation such as
improper installation and debugging, unnecessary maintenance, violation of related
national laws and rules and industrial standard, and violation of this instruction manual,
etc., we will bear no liability.
(6) 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).
(7) 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.
(8) The final right to interpret for this instruction manual belongs to Gree Electric Appliances
Inc. of Zhuhai.

Contents
1 Safety Notices (Please be sure to abide )........................................................................... 1
2 Product Introduction........................................................................................................... 3
2.1 Names of Key Components................................................................................................ 3
2.2 Rated Working Condition.................................................................................................... 3
3 Preparations for Installation................................................................................................ 3
3.1 Standard Fittings................................................................................................................. 3
3.2 Location for Installation....................................................................................................... 4
3.3 Requirements for Communication Line .............................................................................. 5
3.4 Wiring Requirements .......................................................................................................... 6
4 Installation Instructions....................................................................................................... 7
4.1 Installation of Indoor Unit.................................................................................................... 7
4.2 Refrigerant Pipe Connection............................................................................................... 9
4.3 Drainage Pipe Installation and Drainage System Testing .................................................. 9
4.4 Installation ofAir Duct....................................................................................................... 13
4.5 Installation of Wired Controller.......................................................................................... 15
5 Wiring Work.......................................................................................................................16
5.1Connection of Wire and Patch Board Terminal.................................................................. 16
5.2Power Cord Connection .................................................................................................... 17
5.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or indoor unit)
................................................................................................................................................. 17
5.4 Connect Communication Wire of Wired Controller........................................................... 18
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network......................... 18
6 Setting of External Static Pressure....................................................................................20
7 Routine Maintenance.........................................................................................................20
7.1 Cleaning of Filter............................................................................................................... 20
7.2 Maintenance before the Seasonal Use ............................................................................ 20
7.3 Maintenance after the Seasonal Use................................................................................ 20
8 Table of Error Codes for Indoor Unit..................................................................................21
9 Troubleshooting.................................................................................................................21

Multi Variable Air Conditioners Ducted 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.
Please install the unit according
to instructions in this manual.
Read this manual carefully
before starting up or checking
the machine.
Installation should be
performed by dealer or
qualified technicians. Do not
install the product by
yourself. Improper
installation may result in
water leakage, electric
shock or fire hazard.
Make sure the local power
supply is in accordance with
units before installation, and
check the power supply
carefully.
This air conditioner must be
properly grounded through
the receptacle to avoid
electric shock. The
grounding wire shouldn’t be
connected with gas pipe,
water pipe, lightning arrester
or telephone line.
Please use specialized
accessories or parts to carry
out installation, or water
leakage, electric shock, fire
hazard may resulted.
R410A refrigerant can
produce poisonous gas once
it meets fire, so please
ventilate the room
immediately if refrigerant
leaks out during installation.
Diameter of power cord must
be large enough. Damaged
power cord and connecting
wire must be replaced by
specialized electric cable.
After the power cord is
Connected, please install
the cover of electric box to
avoid danger.
Nitrogen must be charged
according to technical
requirements.
Short circuit is forbidden. Do
not cancel the pressure
switch in case the unit may
be damaged.
For units with wired controller,
do not connect power supply
until the wired controller is well
installed. Otherwise, the wired
controller cannot be used.
When the installation is
finished, please check and
make sure the drain pipe,
pipeline and electric wire are
all well connected in order to
avoid water leakage,
refrigerant leakage, electric
shock or fire hazard.
Do not extend fingers or
objects into air outlet or air
return grille.
If you use gas heater or
petroleum heater in the
same room, please open the
door or window to maintain
good air circulation in case
the room may lack of
oxygen.

Multi Variable Air Conditioners Ducted Type Indoor Unit
2
Never start or stop the air
conditioner by inserting or
removing the power cord.
Do not turn off the air
conditioner until it runs for at
least 5 minutes. Otherwise,
oil-return of the compressor
will be affected.
Children are not allowed to
operate the air conditioner.
Do not operate the air
conditioner with wet hands.
Please turn the unit off and
unplug your air conditioner
before cleaning. Otherwise, it
may cause electric shock or
personal injury.
Do not spray water on the
air conditioner or it will
cause malfunction or electric
shock.
Do not expose the air
conditioner directly to water or
place it in a damp or corrosive
environment.
Connect power supply 8
hours before operation. Do
not disconnect power if you
want to stop the unit in a
short period of time, e.g. in
one night. (This is for
protecting the compressor.)
Volatile liquid like thinner or
gasoline will damage the
appearance of air conditioner.
(Please use soft dry cloth and
wet cloth with mild detergent to
clean the outer case of air
conditioner.)
During Cooling mode, indoor
temperature should not be
set too low. Keep the
difference between indoor
temp and outdoor temp
within 5°C.
If abnormal condition occurs
(e.g. unpleasant smell), please
turn off the unit at once and
disconnect power supply. Then
contact GREE service center. If
the air conditioner continues to
operate despite of abnormal
condition, the unit may be
damaged and it may cause
electric shock or fire hazard.)
Do not repair the air
conditioner by yourself.
Improper repair will cause
electric shock or fire hazard.
Please contact GREE
service center and have it
repaired by professional
technicians.
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.
Correct Disposal of this product
This marking indicates that this product should not be disposed with other
household wastes throughout the EU. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, recycle it
responsibly to promote the sustainable reuse of material resources. To return
your used device, please use the return and collection systems or contact the
retailer where the product was purchased. They can take this product for
environmental safe recycling.
R410A (R32/125:50/50):2087.5

Multi Variable Air Conditioners Ducted Type Indoor Unit
3
2 Product Introduction
2.1 Names of Key Components
Fig 2.1
No.
①
②
③
④
⑤
⑥
⑦
Name
Drain Pipe
Control
box
Pothook
Gas pipe
Liquid pipe
Air-return
Opening
Air Outlet
2.2 Rated Working Condition
Indoor Side Condition
Outdoor Side Condition
Dry Bulb Temp℃(℉)
Wet Bulb Temp℃(℉)
Dry Bulb Temp℃(℉)
Wet Bulb Temp℃(℉)
Rated Cooling
27(80.6)
19(66.2)
35(95)
24(75.2)
Rated Heating
20(68.0)
15(59.0)
7(44.6)
6(42.8)
3 Preparations for Installation
Note: Product graphics are only for reference. Please refer to actual products. Unspecified
measure unit is mm.
3.1 Standard Fittings
Please use the supplied standard fittings listed below as instructed.
No.
Name
Appearance
Q'ty
Usage
1
Wired Controller
1
To control the indoor unit
2
Drain Hose Assembly
1
To connect with the hard PVC drain pipe
3
Special Nut
1
To be used for connecting the refrigerant
pipe

Multi Variable Air Conditioners Ducted Type Indoor Unit
4
No.
Name
Appearance
Q'ty
Usage
4
M10X8 Nut with Washer
4
To be used together with the hanger bolt
for installing the unit.
5
M10 Nut (M10X8.4 Nut)
4
To be used together with the hanger bolt
for installing the unit.
6
M10 Washer (Spring Washer
M10X2.6)
4
To be used together with the hanger bolt
for installing the unit.
7
Insulation
1
To insulate the gas pipe
8
Insulation
1
To insulate the liquid pipe
9
Sponge
2
To insulate the drain pipe
10
Fastener
8
To fasten the sponge
Note: User can purchase remote controller and receiver otherwise by himself.
3.2 Location for Installation
(1) The appliance shall not be installed in the laundry.
(2) The top holder must be strong enough to support unit’s weight.
(3) Drain pipe can drain water out easily.
(4) There is no obstacle at inlet or outlet. Please ensure good air circulation.
(5) In order to make sure the space for maintenance, please install the indoor unit according
to the dimension described below.
(6) Keep the unit away from heating source, inflammable gas or smoke.
(7) This is a concealed ceiling type unit.
(8) Indoor unit, outdoor unit, power cord and electric wire should stay at least 1m from the TV
set and radio. Otherwise, these electrical appliances may have image interference and
noise. (Even if the distance is 1m, when there is strong electric wave, noise may still
occur.)

Multi Variable Air Conditioners Ducted Type Indoor Unit
5
Fig 3.2
Notes:
①Installation of the unit must be in accordance with National Electric Codes and local
regulations.
②Improper installation will affect unit’s performance, so do not install the unit by yourself.
Please contact local dealer to arrange professional technicians for the installation.
③Do not connect power until all installation work is finished.
3.3 Requirements for Communication Line
Caution:
If air conditioner used under strong electronic-magnetic interference circumstance, STP
(shielded twisted pair) communication cable must be adopted.
3.3.1 Select Communication Line for Indoor Unit and Wired Controller
Fig 3.3.1

Multi Variable Air Conditioners Ducted Type Indoor Unit
6
Material type
Total length of
communication
line between
indoor unit and
wired controller L
(m/ft.)
Wire size
(mm2/AWG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤250m
(L≤820-1/5ft.)
2×0.75~2×1.25
(2×AWG18~2×A
WG16)
IEC
60227-5
1)Total length of communication
line can't exceed 250m (820-
1/5ft.).
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.
3.3.2 Select Communication Line for Indoor Unit and Indoor Unit (Outdoor Unit)
Fig 3.3.2
Material Type
Total Length L
(m/ft.) of
Communication
Cable between
Indoor Unit and
Indoor (Outdoor)
Unit
Wire size
(mm2/AWG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000m
(L≤3280-5/6ft.)
≥2×0.75
(≥2×AWG18)
IEC 60227-5
1)If the wire diameter is enlarged to 2×1
mm2(2×AWG16), the total
communication line length can reach
1500 m (4921-1/4ft.).
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
(1) Power Cord Size and Air Switch Capacity
Model
Power Cord Size
Air Switch
Capacity
(A)
Minimum Sectional
Area of Ground Wire
(mm2)
Minimum
Sectional Area
of Power Cord
(mm2)
GMV-ND22~160PHS/B-T
220~240V-1ph-50Hz
208~230V-1ph-60Hz
6
1.0
1.0
Notes:
①Use copper wire only as unit’s power cord. Operating temperature should be within its
rated value.
②If the power cord is more than 15m long, please increase properly the sectional area of

Multi Variable Air Conditioners Ducted Type Indoor Unit
7
power cord to avoid overload, which may cause accident.
③Above selection requirements: Power cord size is based on BV single-core wire (2~4pc)
at 40°Cambient temperature when laying across plastic pipe. Air switch is D type and used
at 40°C. If actual installation condition varies, please lower the capacity appropriately
according to the specifications of power cord and air switch provided by manufacturer.
④If 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.
(2) Install cut-off device near the unit. The minimum distance between each stage of cut-off
device should be 3mm (The same for both indoor unit and outdoor unit).
4 Installation Instructions
4.1 Installation of Indoor Unit
4.1.1 Outline Dimension and Installation Spots
Equip with an inspection hatch after lifting the unit. For the convenience of maintenance, the
service port should be on one side of the electric box and below unit’s lower level.
Fig 4.1.1
Below are dimensions of A, B, C, etc. for different models:
Unit: mm
Model
A
B
C
D
E
F
G
GMV-ND22~50PHS/B-T
740
500
830
300
754
700
700
GMV-ND56~80PHS/B-T
1040
500
1130
300
754
1000
700
GMV-ND90~125PHS/B-T
1440
500
1530
300
754
1400
700
GMV-ND140~160PHS/B-T
1440
500
1580
300
754
1400
700