Gree GMV-ND07T/B-T User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi Variable Air Conditioners
Compact Cassette Type Indoor Unit
Models:
GMV-ND07T/B-T(U)
GMV-ND09T/B-T(U)
GMV-ND12T/B-T(U)
GMV-ND15T/B-T(U)
GMV-ND18T/B-T(U)

Preface
For correct installation and operation, please read all instructions carefully. Before reading the
instructions, please be aware of the following items:
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 the safe operation of this unit, please read and follow the instructions carefully.
(4) During operation, total capacity of indoor units should not exceed the total capacity of outdoor
units. Otherwise, poor effect of cooling or heating may result.
(5) Direct operators or maintainers should well keep this manual.
(6) If this unit fails to operate normally, please contact our service center as soon as possible and
provide the following information:
1) Content on the nameplate (model number, cooling capacity, production code, ex-factory
date.)
2) Malfunction details (before and after the malfunction occurs.)
(7) Each unit has been strictly tested and proved to be qualified before ex-factory. In order to
prevent units from being damaged or operating normally because of improper disassembly,
please do not disassemble the unit by yourself. If you need to disassemble and check units,
please contact our service center. We will send specialists to guide the disassembly.
(8) Installation must be performed in accordance with the requirements of NEC and CEC by
authorized personnel only.
User Notice
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.
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 th
e
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 Precautions..................................................................................................... 1
2 Product Introduction ................................................................................................. 2
2.1 Names of Key Components.............................................................................................. 2
2.2 Rated Working Condition.................................................................................................. 2
3 Preparations for Installation ..................................................................................... 2
3.1 Standard Fittings............................................................................................................... 2
3.2 Installation Position Selection ........................................................................................... 3
3.3 Requirements for Communication Line............................................................................. 4
3.4 Wiring Requirement.......................................................................................................... 5
4 Installation Instructions ............................................................................................ 6
4.1 Installation of Indoor Unit.................................................................................................. 6
4.2 Refrigerant Pipe Connection............................................................................................. 8
4.3 Drainage Pipe Installation and Drainage System Testing.................................................. 9
4.4 Panel Installation .............................................................................................................12
4.5 Installation of Wired Controller.........................................................................................14
5 Wiring Work.............................................................................................................. 14
5.1 Connection of Wire and Patch Board Terminal.................................................................15
5.2 Power Cord Connection...................................................................................................15
5.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or Indoor Unit)
..............................................................................................................................................16
5.4 Connect Communication Wire of Wired Controller...........................................................16
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network..........................17
6 Routine Maintenance............................................................................................... 19
6.1 Cleaning of Filter .............................................................................................................19
6.2 Maintenance before the Seasonal Use............................................................................19
6.3 Maintenance after the Seasonal Use...............................................................................19
7 Table of Error Codes for Indoor Unit...................................................................... 19
8 Troubleshooting....................................................................................................... 20

Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
1
1 Safety Precautions
(1) 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.
(2) Follow this instruction to complete the installation work. Please carefully read this manual
before unit startup and service.
(3) Wire size of power cord should be large enough. The damaged power cord and connection
wire should be replaced by exclusive cable.
(4) After connecting the power cord, please fix the electric box cover properly in order to avoid
accident.
(5) Never fail to comply with the nitrogen charge requirements. Charge nitrogen when welding
pipes.
(6) Never conditioners short-circuit or cancel the pressure switch to prevent unit damage.
(7) Please firstly connect the wired controller before energization, otherwise wired controller
cannot be used.
(8) Before using the unit, please check if the piping and wiring are correct to avoid water leakage,
refrigerant leakage, electric shock, or fire etc.
(9) Do not insert fingers or objects into air outlet/inlet grille.
(10)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.
(11)Never start up or shut off the air conditioner by means of directly plug or unplug the power
cord.
(12)Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the
compressor.
(13)Do not allow children operate this unit.
(14)Do not operate this unit with wet hands.
(15)Turn off the unit or cut off the power supply before cleaning the unit, otherwise electric shock or
injury may happen.
(16)Never spray or flush water towards unit, otherwise malfunction or electric shock may happen.
(17)Do not expose the unit to the moist or corrosive circumstances.
(18)Under cooling mode, please don't set the room temperature too low and keep the temperature
difference between indoor and outdoor unit within 5°C(41°F).
(19)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.
(20)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.
(21)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..
(22)The control box should be installed inside.
(23)Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock
and fire accidents.
(24)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.
(25)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).
(26)If refrigerant leakage happens during installation, please ventilate immediately. Poisonous gas
will emerge if the refrigerant gas meets fire.
(27)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.
(28)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.

Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
2
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 Names of Key Components
Fig.2.1.1
No.
① ② ③ ④ ⑤
Name
The hanger
bracket
Drainage
Pipe
Louver
Connection
Pipe
Air Inlet Grille
(With Filter)
2.2 Rated Working Condition
-
Indoor Side Condition
Outdoor Side Condition
Dry Bulb Temp
°C (°F)
Wet Bulb Temp
°C(°F)
Dry Bulb Temp
°C(°F)
Wet Bulb Temp
°C(°F)
Rated Cooling
26.7(80)
19.4(67)
35(95)
24(75)
Rated Heating
21.1(70)
15.6(60)
8.3(47)
7.1(45)
3 Preparations for Installation
Product graphics are only for reference. Please refer to actual products. Unspecified
measure unit is mm (inch).
3.1 Standard Fittings
Please use the supplied standard fittings listed below as instructed.
No.
Name
Appearance
Q'ty
Usage
1
Drainage hose
assembly
1
To connect the drainage
pipe
2 Special Nut 2 GMV-ND07~15T/B-T(U)
1GMV-ND18T/B-T(U)
3
Corrugated pipe
1
GMV-ND18T/B-T(U)
4
Insulation
1
To insulate the gas pipe
5
Insulation
1
To insulate the liquid pipe

Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
3
No.
Name
Appearance
Q'ty
Usage
6 Sponge 2 To insulate the drain pipe
7
Fastener
4
To fasten the sponge
8
Paper pattern for
installation
1
Locate the drill hole on
ceiling
9
Tapping screw with
washer
4 Fix paper pattern
10 Remote controller 1+2 To control the indoor unit
11 Washer fixing plate 4
Prevent the washer from
falling off
12 Remote controller
holder 1 Used for holding the
remote controller
13 Tapping screw 2
Used for fixing the remote
controller holder
3.2 Installation Position Selection
(1) The location should be able to withstand the weight of unit.
(2) The water can be drained conveniently from drainage pipe.
(3) There should be no obstruction near air inlet and air outlet.
(4) Follow the installation distance required in the fig. below to ensure sufficient space for
maintenance.
(5) The installation location should be far from heat sources, flammable or explosive gas, or
smog spread in the air.
(6) The appliance shall not be installed in the laundry.
(7) Appliances are not accessible to general public.
(8) The indoor unit, outdoor unit, power cord and connection electricity wire should be at least
1m (3-1/4ft.) from television and radio in order to prevent interference and noise. (Even
though 1m (3-1/4ft.) distance is ensured, there may be noise if the electric wave is too
strong.)
Unit: mm (inch)
Fig.3.2.1

Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
4
Unit: mm (inch)
Model
H
GMV-ND07~18T/B-T(U)
255(10)
(1) The unit shall be installed in accordance with national standards or local regulations.
(2) Only qualified personnel can carry out installation work, please contact with local dealer before
installation.
(3) Make sure all the installation work completed before energizing.
3.3 Requirements for Communication Line
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
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≤250
(L≤820-3/16)
2×0.75
~2×1.25
(2×AWG18
~2×AWG16)
IEC
60227-5
1.Total length of communication
line can't exceed 250m (820ft).
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 Selection of Communication Wire between Indoor Unit and Indoor Unit (or Outdoor
Unit)
Fig.3.3.2

Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
5
Material Type
Total Length L
(m/ft.) of
Communication
Cable between
Indoor Unit and
Indoor (Outdoor)
Wire size
(mm2/AWG) Material standard Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000
(L≤3280-13/16) ≥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 1500m (4920ft).
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 Requirement
Power Cord Size and Air Switch Capacity
Model
Power Supply
MCA(A)
MOP(A)
GMV-ND07T/B-T(U)
208/230V-1ph-60Hz
2 15
GMV-ND09T/B-T(U) 2 15
GMV-ND12T/B-T(U) 2 15
GMV-ND15T/B-T(U) 2 15
GMV-ND18T/B-T(U) 2 15
(1) An all-pole disconnection switch having a contact separation of at least 3mm (1/8 inch) in all
poles should be connected in fixed wiring.
(2) The circuit breaker and power cord specification in above sheet are based on max power (max
current) of the unit.
(3) The power cord specification in above sheet is based on ambient temperature of 40°C (104°F).
(4) The circuit breaker specification in above sheet is based on ambient temperature of 40°C
(104°F). If the working condition is different, please adjust it according to the specification sheet
of circuit breaker.

Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
6
4 Installation Instructions
4.1 Installation of Indoor Unit
4.1.1 Ceiling opening Dimension and suspension bolt position.
Fig.4.1.1
Unit: mm (inch)
Model
A
B
C
D
E
GMV-ND07T/B-T(U)
GMV-ND09T/B-T(U)
GMV-ND12T/B-T(U)
GMV-ND15T/B-T(U)
GMV-ND18T/B-T(U)
670
(26 3/8) 570 (22 7/16) 570 (22 7/16) 495 (19 1/2) 600 (23 5/8)
4.1.2 Suspend the Indoor Unit
(1) Drill bolt holes and install bolts
1) Stick the reference cardboard on the installation position; drill 4 holes according to the
hole site on the cardboard as shown in fig. 4.1.2; diameter of drilling hole is according to
the diameter of expansion bolt and the depth is 60-70mm (2-3/8~2-3/4 inch), as shown in
fig.4.1.3.