Gree GMV-ND09TS/A-TU, GMV-ND12TS/A-T, GMV-ND24TS/A-T, GMV-ND12TS/A-TU, GMV-ND15TS/A-TU Owner's Manual
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Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi Variable Air Conditioners
Two-way Cassette Indoor Unit
Models:
GMV-ND09TS/A-T(U)
GMV-ND12TS/A-T(U)
GMV-ND15TS/A-T(U)
GMV-ND18TS/A-T(U)
GMV-ND24TS/A-T(U)
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.
WARNING
This mark indicates procedures which, if improperly performed, might lead to the death
or serious injury of the user.
CAUTION
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.
WARNING
(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) Under the standby status, the unit will consume a little power for ensuring reliability of complete unit, maintaining
normal communication and preheating refrigerant. When the unit won’t be used for a long time, cut off the power
of the complete unit. However, please preheat it when operating the unit next time.
(9) All graphics in this manual is only for your reference. For sales or production reasons, these graphics are subject
to change by manufacturer without prior notice.
(10) These instructions shall also be available in an alternative format, e.g. on a website.
Preface
For correct installation and operation, please read all instructions carefully. Before
reading the instructions, please be aware of the following items:
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.
R410A (R32/125:50/50):2087.5
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 ······················································ 3
3.1 Standard Fittings ············································································· 3
3.2 Installation Position Selection ·························································· 3
3.3 Requirements of communication wire selection ································ 4
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 ················· 10
4.4 Panel installation ············································································ 13
4.5 Installation of Wired Controller ························································ 15
5 Wiring Work ·········································································· 15
5.1 Connection of Wire and Patch Board Terminal ································· 15
5.2 Power Cord Connection ·································································· 16
5.3 Connection of Communication Wire between Indoor Unit and Outdoor
Unit (or indoor unit) ·············································································· 17
5.4 Connection of Communication Wire for Wired Controller ·················· 17
5.5 Wiring Instructions of Wired Controller and Indoor Units Network ···· 18
6 Routine Maintenance ······························································ 20
6.1 Cleaning of Filter ············································································ 20
6.2 Maintenance before the Seasonal Use ············································ 20
6.3 Maintenance after the Seasonal Use ··············································· 20
7 Table of Error Codes for Indoor Unit ·········································· 21
8 Display of Light Board ···························································· 21
9 Troubleshooting ····································································· 22
Multi Variable Air Conditioners Two-way Cassette Indoor Unit
WARNING
(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 nitrigen charge requirements.Charge nitrogen when welding pipes.
(6) Never short-circiut or cancel the pressure switch to prevent unit damage.
(7) Please firstly connect the wired controller before energization, otherwise wired controller can not 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℃(41℉).
(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) Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock and fire
accidents.
(23) 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.
(24) 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).
(25) If refrigerant leakage happens during installation, please ventilate immediately. Poisonous gas will
emerge if the refrigerant gas meets fire.
(26) 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.
(27) If anything abnormal happens (such as burning smell), please 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.
1 Safety Precautions
Any personal injury or property loss caused by improper installation, improper
debug, and unnecessary repair or not following the instructions of this manual should
not be the responsibility of Gree Electric Appliances, Inc. of Zhuhai.
1
Multi Variable Air Conditioners Two-way Cassette Indoor Unit
No.
① ② ③
④
⑤ ⑥ ⑦
Name
Drainage
Pipe
Connection
Pipe
Drainage
Device
Air Inlet Grille (With Filter)
Main
Unit
Louver
Panel
Indoor Side Condition
Outdoor Side Condition
Dry Bulb Temp
°C(℉)
Wet Bulb Temp
°C(℉)
Dry Bulb Temp
°C(℉)
Wet Bulb Temp
°C(℉)
Rated Cooling
26.7(80.0)
19.4(67.0)
35(95.0)
23.9(75.0)
Rated Heating
21.1(70.0)
15.6(60.0)
8.3(47.0)
6.1(43.0)
2 Product Introduction
2.1 Names of Key Components
Fig. 2.1.1
2.2 Rated Working Condition
2
Multi Variable Air Conditioners Two-way Cassette Indoor Unit
No.
Name
Appearance
Q'ty
Usage
1
Drainage hose assembly
1
To connect the drainage pipe
2
Special Nut
1
To be used for connecting the
refrigerant pipe
3
Insulation
1
To insulate the gas pipe
4
Insulation
1
To insulate the liquid pipe
5
Sponge
1
To insulate the drain pipe
6
Fastener
4
To fasten the sponge
7
paper pattern for
installation
1
Locate the drill hole on ceiling
8
Tapping screw with
washer
4
Fix paper pattern
9
Remote controller
1+2
To control the indoor unit
10
Washer fixing plate
4
Prevent the washer from falling off
11
corrugated pipe
1
It’s used for bending connection
pipe(Packing materials for 56 or
above models)
12
Remote controller holder
1
Used for holding the remote
controller
13
Tapping screw
2
Used for fixing the remote
controller holder
3 Preparations for Installation
NOTICE!
Product graphics are only for reference. Please refer to actual products. Unspecified
measure unit is mm (in.)
3.1 Standard Fittings
Use the following provided accessories according to the requirement.
3.2 Installation Position Selection
(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.
3
Multi Variable Air Conditioners Two-way Cassette Indoor Unit
(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.
(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
(39-3/8 in.) from the TV set and radio. Otherwise, these electrical appliances
may have image interference and noise. (Even if the distance is 1m (39-3/8 in.),
when there is strong electric wave, noise may still occur).
Unit: mm (in.)
Fig. 3.2.1
3.3 Requirements of communication wire selection
NOTICE!
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).
4
Multi Variable Air Conditioners Two-way Cassette Indoor Unit
Wire type
Total length of
communication wire
between indoor unit
and wired controller
(m/ft.)
Wire diameter (AWG)
Wire
standard
Remark
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×AWG16)
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.
3.3.1 Selection of Communication Wire between Indoor Unit and Wired Controller
Fig. 3.3.1
3.3.2 Selection of communication wire between indoor unit and indoor unit (or
outdoor unit)
Fig. 3.3.2
5
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