Gree GMV-Y72WM/C-F User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Photovoltaic Direct-driven Inverter VRF
Models:
GMV-Y72WM/C-F(U)
GMV-Y96WM/C-F(U)
GMV-Y120WM/C-F(U)
……
GMV-Y360WM/C-F(U)

Preface
Gree Photovoltaic Direct-driven Inverter VRF System, with the most advanced
technologies in the world, uses eco-friendly refrigerant R410A as its cooling medium. For
correctinstallation and operation, please read this manual carefully.
This is the safety alert symbol. It is usedto alert you to potential personal injury
hazards. Obey all safety messages thatfollow 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 damageto 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 mustbe performed in accordance with the requirements of NEC and CEC by authorized
personnelonly.
(3) For safety operation, pleasestrictly follow the instructions in this manual.
(4) During operation, the gross rated capacity of working IDU shouldbe within the gross rated capacity of
ODU. Otherwise, IDU’s cooling/heating performance will be reduced.
(5) This manualmustbe in the hands of direct operators or maintenance men.
(6) In caseof malfunction and operation failure, pleaseexamine the following items and contact our
authorized service centers as soon as possible.
1) Nameplate(model,cooling capacity, product code, ex-factory date).
2) Malfunction status (detail description of conditions before and after malfunction occurs)
(7) All units have been strictly tested and proved to be qualified before ex-factory. To avoid unit damageor
even operation failure which maybe caused byimproper disassembly, please do not disassemble units by
yourself. If disassemblyis needed, pleasecontact our authorized serve centers for help.
(8) All graphics and information in this manual are only for reference. Manufacturer reserves the right for
changes in terms of sales or production at any time and without prior notice.
(9) If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
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 the following
reasons:
(1) Damagetheproductdueto improperuseormisuse oftheproduct;
(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 productis directly caused bycorrosive gas;
(4) After verification, defects aredue to improperoperationduringtransportationofproduct;
(5) Operate, repair, maintain the unitwithoutabiding byinstructionmanual orrelated regulations;
(6) After verification, the problem or dispute is caused by the quality specification or performance of parts and
components thatproduced byother manufacturers;
(7) The damageis causedbynaturalcalamities,badusing environmentorforce majeure.

Contents
1 SAFETY PRECAUTIONS .........................................................................................................................................1
2 PRODUCT INTRODUCTION...................................................................................................................................3
2.1 NAMES OF MAINPARTS .........................................................................................................................................3
2.2 COMBINATIONS OF OUTDOOR UNITS ..................................................................................................................3
2.3 COMBINATIONS OF INDOORANDOUTDOOR UNITS ..........................................................................................4
2.4 THE RANGEOF PRODUCTIONWORKING TEMPERATURE................................................................................5
3 PREPARATION BEFORE INSTALLATION........................................................................................................5
3.1 STANDARDPARTS ...................................................................................................................................................5
3.2 INSTALLATION SITE..................................................................................................................................................6
3.3 PIPING WORK REQUIREMENTS ..........................................................................................................................11
4 INSTALLATION INSTRUCTION...........................................................................................................................12
4.1 PHYSICAL DIMENSION OF THEOUTDOORUNIT AND MOUNTING HOLE......................................................12
4.2 CONNECTION PIPE................................................................................................................................................14
4.3 INSTALLATIONOF THE CONNECTIONPIPE........................................................................................................24
4.4AIR PURGINGAND REFRIGERANT CHARGE.....................................................................................................29
4.5 ELECTRICWIRING.................................................................................................................................................33
4.6 SYSTEM COMMUNICATION...................................................................................................................................35
4.7 CONNECTION METHODANDSTEPS FOR SYSTEM COMMUNICATION..........................................................40
4.8 EXTERNAL ELECTRICAL WIRING DIAGRAM......................................................................................................45
4.9 INSTALLATIONOF PHOTOVOLTAIC SYSTEM.....................................................................................................46
5 CHECK ITEMS AFTER INSTALLATION AND TRIAL RUN.......................................................................50
5.1 CHECK ITEMSAFTER INSTALLATION...................................................................................................................50
5.2 TRIAL RUN..............................................................................................................................................................50
6 COMMON MALFUNCTION AND TROUBLESHOOTING...........................................................................66
7 ERROR INDICATION ...............................................................................................................................................68
8 MAINTENANCE AND CARE.................................................................................................................................72
8.1 OUTDOOR HEATEXCHANGER............................................................................................................................72
8.2 DRAINPIPE.............................................................................................................................................................72
8.3 NOTICEBEFORE SEASONAL USE.......................................................................................................................72
8.4 MAINTENANCEAFTER SEASONAL USE..............................................................................................................72
8.5 PARTS REPLACEMENT..........................................................................................................................................72
9 AFTER-SALES SERVICE.......................................................................................................................................73

Photovoltaic Direct-driven Inverter VRF
1
1 Safety Precautions
(1) This product can’t be installed at corrosive, inflammable or expl osive 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) Pleasefirstly connect the wired controller before energization, otherwise wired controller cannot be used.
(8) Before usingthe unit, pleasecheck 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 supplybefore cleaning the unit, otherwise electric shock or injury
may happen.
(16) Never spray or flush water towards unit, otherwisemalfunction or electric shock may happen.
(17) Do not expose the unit to the moistor corrosive circumstances.
(18) Under cooling mode, please don'tsetthe room temperature too low and keep the temperature difference
between indoor and outdoor unit within 5ºC(41ºF).
(19) Useris not allowedto 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 supplyis in accordance with the requirements specified on
the nameplate. And also take care of the power safety.
(21) Installation should be conducted bydealer or qualified personnel. Please do not attempt to install the unit
by yourself. Improper handlingmay result in water leakage, electric shock or fire disaster etc..
(22) Be sure to usethe exclusive accessoryand part to prevent the water leakage, electric shock and fire
accidents.

Photovoltaic Direct-driven Inverter VRF
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(23) Make sure the unit can be earthed properly and soundlyafter plugging into the socket so as to avoid
electric shock. Pleasedo not connect the ground wire to gas pipe, water pipe, lightning rod or telephone
line.
(24) Electrify the unit 8 hours before operation. Pleaseswitch 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, pleaseventilate immediately. Poisonous gas will
emerge if the refrigerant gas meets fire.
(26) Volatile liquid, suchas diluent or gas will damagethe 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),pleasepower off the unit and cut off the main
power supply, and then immediatelycontact Gree appointed service center. If abnormality keeps going,
the unit mightbe damaged and lead to electric shock or fire.
GREE will not assume responsibility of personal injury or equipment damage caused by
improper installation and commission, unnecessary service and incapable of following the rules
and instructions listed in this manual.

Photovoltaic Direct-driven Inverter VRF
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2 Product Introduction
Gree Photovoltaic Direct-driven Inverter VRF System adopts inverter compressor
technology. According to change the displacement of compressor, stepless capacity regulation
within range of 10%-100%can be realized. Gree air conditioner is absolutely your best choice.
2.1 Names of Main Parts
Fig. 2.1.1
NO.
①
②
③
④
⑤
Name
Fan, Motor
Electric Box
Assembly
Valve interface
Power cord
through-hole
Communication
code through-hole
NOTICE! The picture is only used for reference and the actual product prevails.
2.2 Combinations ofOutdoorUnits
Model
(Single)
GMV-Y144WM/C-F(U)
GMV-Y168WM/C-F(U)
GMV-Y192WM/C-F(U)
Model
(Combined)
GMV-Y72WM/C-F(U)
+ GMV-Y72WM/C-F(U)
GMV-Y72WM/C-F(U)
+ GMV-Y96WM/C-F(U)
GMV-Y96WM/C-F(U)
+ GMV-Y96WM/C-F(U)
Model
(Single)
GMV-Y216WM/C-F(U)
GMV-Y240WM/C-F(U)
GMV-Y264WM/C-F(U)
Model
(Combined)
GMV-Y96WM/C-F(U)
+ GMV-Y120WM/C-F(U)
GMV-Y120WM/C-F(U)
+ GMV-Y120WM/C-F(U)
GMV-Y72WM/C-F(U)
+ GMV-Y96WM/C-F(U)
+ GMV-Y96WM/C-F(U)
Model
(Single)
GMV-Y288WM/C-F(U)
GMV-Y312WM/C-F(U)
GMV-Y336WM/C-F(U)
Model
(Combined)
GMV-Y96WM/C-F(U)
+ GMV-Y96WM/C-F(U)
+ GMV-Y96WM/C-F(U)
GMV-Y96WM/C-F(U)
+ GMV-Y96WM/C-F(U)
+ GMV-Y120WM/C-F(U)
GMV-Y96WM/C-F(U)
+ GMV-Y120WM/C-F(U)
+ GMV-Y120WM/C-F(U)

Photovoltaic Direct-driven Inverter VRF
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Model
(Single)
GMV-Y360WM/C-F(U)
Model
(Combined)
GMV-Y120WM/C-F(U)
+ GMV-Y120WM/C-F(U)
+ GMV-Y120WM/C-F(U)
2.3 Combinations ofIndoorand OutdoorUnits
ODU Model
Max number of
connectable IDU
(unit)
ODU Model
Max number of
connectable IDU (unit)
GMV-Y72WM/C-F(U)
13
GMV-Y240WM/C-F(U)
39
GMV-Y96WM/C-F(U)
16
GMV-Y264WM/C-F(U)
46
GMV-Y120WM/C-F(U)
19
GMV-Y288WM/C-F(U)
50
GMV-Y144WM/C-F(U)
23
GMV-Y312WM/C-F(U)
53
GMV-Y168WM/C-F(U)
29
GMV-Y336WM/C-F(U)
56
GMV-Y192WM/C-F(U)
33
GMV-Y360WM/C-F(U)
59
GMV-Y216WM/C-F(U)
36
The total capacity of indoor units should be within 50%~135% of that of outdoor units.
Fig.2.3.1
Fig.2.3.1 is the combination view of the ODU of Photovoltaic Direct-driven Inverter VRF
and the IDU of Photovoltaic Direct-driven Inverter VRF. IDU can be four-way cassette type,
one-way cassette type, wall-mounted type, duct type, etc. When any one IDU receives
operation signal, ODU will start to work according to the capacity; when all IDUs stop, ODU will
also stop.

Photovoltaic Direct-driven Inverter VRF
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2.4 The Range of ProductionWorkingTemperature
Cooling
Ambient temperature: -5ºC(23ºF)~52ºC(125.6ºF)
Heating
Ambient temperature: -20ºC (-4ºF)~24ºC (75.2ºF)
When the indoor units are all VRF fresh air indoor units, the unit operating range is as
follows:
Cooling
Ambient temperature: 16°C（60.8ºF）~45°C（113ºF）
Heating
Ambient temperature: -7°C（19.4ºF）~16°C（60.8ºF）
NOTICE! Out of the working Temperature Range may damage this product and will
invalidate the warranty.
3 Preparation before Installation
NOTICE! The picture is only used for reference and the actual product prevails. Unit:
mm(in.).
3.1 Standard Parts
Please use the following standard parts supplied by Gree.
Parts for Outdoor Unit
Number
Name
Picture
Quantity
Remarks
1
Owner's Manual
1
2
Wiring (match
with resistance)
1
Must be connected to the
lastIDU of communication
connection
3
Mark (Master )
2
Attach on the wired
controllerof masterIDUor
on the front panel
4
Photovoltaic
connector
(positive pole)
4
Used withthe photovoltaic
positivepoleterminal

Photovoltaic Direct-driven Inverter VRF
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Parts for Outdoor Unit
Number
Name
Picture
Quantity
Remarks
5
Photovoltaic
connector
(negative pole)
4
Used withthe photovoltaic
negative pole terminal
6
Photovoltaic
positive pole
terminal
4
Used withthe photovoltaic
connector(positive pole)
7
Photovoltaic
negative pole
terminal
4
Used withthe photovoltaic
connector(negative pole)
8
Communication
terminal (plug is
provided)
3
9
Disassemblytool
of photovoltaic
connector
1
Useoneendof the toolto
lock photovoltaiccable
andusethe other endto
disassemblethe
photovoltaicconnector
3.2 Installation Site
(1) Install the unit at a place where is adequate to withstand the weight of the unit and make sure the unit
would not shakeor fall off.
(2) Never expose the unit under direct sunshine and rainfall. Install the unit at a place where is against dust,
typhoon and earthquake.
(3) Try to keep the unit away from combustible, inflammableand corrosive gas or exhaust gas.
(4) Leave somespacefor heat exchanging and servicing so as to guarantee unit normal operation.

Photovoltaic Direct-driven Inverter VRF
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(5) Keep the indoor and outdoor units close to each other as much as possible so as to decrease the pipe
length and bends.
(6) Never allow children to approach to the unit and take measures to prevent children touching the unit.
3.2.1 When the outdoor unit is totally surrounded by walls, please refer to following
figures for space dimension.
3.2.1.1 Space dimension for single-module unit
Unit: mm(in.)
Fig.3.2.1
3.2.1.2 Space dimension for dual-module unit
Unit: mm(in.)
Fig.3.2.2

Photovoltaic Direct-driven Inverter VRF
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3.2.1.3 Space dimension for three-module unit
Unit: mm(in.)
Fig.3.2.3
3.2.2 When there is wall (or similar obstruction) above the unit, keep the distance
between the unit top and the wall at least 3000mm(118-1/8in.) or above. When the
unit is located in a totally open space with no obstructions in four directions, keep
the distance between the unit top and wall at least 1500mm(59in.) or above (See
Fig. 3.2.4). When space is limited within 1500mm(59in.) or the unit is not set in an
open space, air outlet pipe is required to be installed in order to keep good
ventilation (See Fig. 3.2.5).

Photovoltaic Direct-driven Inverter VRF
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Unit: mm(in.)
Fig.3.2.4 Fig.3.2.5
3.2.3 Space dimension for multiple-module unit
For keeping good ventilation, make sure there is no obstruction above the unit.
When the unit is located at a half-open space (front and left/right side is open), install the
unitas per the same or opposite direction.
Unit: mm(in.)
Fig.3.2.6
Fig.3.2.7

Photovoltaic Direct-driven Inverter VRF
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3.2.4 Considering the seasonal wind inoutdoor unit installation
Anti-monsoon installation requirement for unit not connecting exhaust duct
Fig.3.2.8
Fig.3.2.9
Anti-monsoon installation requirement for unit connecting exhaust duct
Fig.3.2.10

Photovoltaic Direct-driven Inverter VRF
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3.2.5 Considering snow in outdoor unit installation
Fig.3.2.11
3.3 Piping WorkRequirements
There should be no fall among outdoor modules. Refer to the table below for piping work
requirements.
R410A Refrigerant System
Outer Diameter mm(in.)
Wall Thickness mm(in.)
Type
Φ6.35(1/4)
≥0.8(1/32)
O
Φ9.52(3/8)
≥0.8(1/32)
O
Φ12.7(1/2)
≥0.8(1/32)
O
Φ15.9(5/8)
≥1.0(3/76)
O
Φ19.05(3/4)
≥1.0(3/76)
1/2H
Φ22.2(7/8)
≥1.2(1/21)
1/2H
Φ28.6(1-1/8)
≥1.2(1/21)
1/2H
Φ34.9(1-3/8)
≥1.3(2/39)
1/2H
Φ41.3(1-5/8)
≥1.5(1/17)
1/2H

Photovoltaic Direct-driven Inverter VRF
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4 Installation Instruction
4.1 Physical Dimensionof the OutdoorUnit and Mounting Hole
Outline and Physical Dimention of GMV-Y72WM/C-F(U).
Unit: mm(in.)
Fig.4.1.1

Photovoltaic Direct-driven Inverter VRF
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Outline and Physical Dimention of GMV-Y96WM/C-F(U) and GMV-Y120WM/C-F(U).
Unit: mm(in.)
Fig.4.1.2

Photovoltaic Direct-driven Inverter VRF
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4.2 ConnectionPipe
4.2.1 Schematic Diagram of Piping Connection
Fig.4.2.1

Photovoltaic Direct-driven Inverter VRF
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4.2.2 Schematic Diagram of Piping Sequence
GMV-Y72WM/C-F(U)
Fig.4.2.2
GMV-Y96WM/C-F(U) and GMV-Y120WM/C-F(U).
Fig.4.2.3

Photovoltaic Direct-driven Inverter VRF
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4.2.3 Allowable pipe length and drop height among indoor and outdoor units
Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is
shown in the figure below.
Remark: Equivalent length of one Y-type manifold is about 0.5m(1-3/4ft.).
Unit: m(ft.)
Fig.4.2.4
L10:Length from the first branch to the farthest IDU;
L11: Length from the first branch to the nearest IDU;
Equivalent length of branch of IDU is 0.5m(1-3/4ft.).
.
R410A Refrigerant System
Allowable Value
m(ft.)
Fitting Pipe
Total length (actual length) of fitting pipe
≤1000(3280-3/4)
L1+L2+L3+L4+…+L9+a+b+…+i+j
Length of farthest
fitting pipe m(ft.)
Actual length
≤165(541-1/4)
L1+L6+L7+L8+L9+j
Equivalent length
≤190(623-1/4)