Gree FGR20Pd/DNa-X User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Ducted Type Split Air-Conditioner Units(Inverter
Series)
Models:
FGR20Pd/DNa-X
FGR25Pd/DNa-X
FGR30Pd/DNa-X
FGR40Pd/D(2)Na-X

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 Precautions ............................................................ 1
1.1 Safety Notices (Please be sure to abide ) ..............................1
1.2 Power Supply Demand ..........................................................1
2 Installation of Indoor Unit ................................................. 2
2.1 Selection Proper Installation Location ....................................2
2.2 Outline Dimension and Installation Spots...............................2
2.3 Drainage Pipe Installation and Drainage System Testing .......6
2.4 Installation of Air Duct ............................................................8
2.5 Indoor unit static pressure notch adjustment ..........................9
2.6 Installation of Wired Controller .............................................10
2.7 Wiring Work .........................................................................10
3 Installation of Outdoor Unit ............................................ 12
3.1 Dimension of Outdoor Unit and Mounting Hole ....................13
3.2 Installation Space Requirement ...........................................14
3.3 Refrigerant Pipe Connection ................................................14
3.4 Vacuum Pumping, Refrigerant Adding..................................15
3.5 Electric Wiring......................................................................16
4 Check Items after Installation and Test Operation........ 19
4.1 Check Items after Installation ...............................................19
4.2 Test Operation and Debugging.............................................20
5 Common Malfunctions and Troubleshooting................ 28
6 Error Indication ................................................................ 30
7 Maintenance and Care..................................................... 34
7.1 Outdoor Heat Exchanger .....................................................34
7.2 Drain Pipe ............................................................................34
7.3 Notice before Seasonal Use.................................................34

7.4 Maintenance after Seasonal Use .........................................34
7.5 Parts Replacement ..............................................................35
8 After-sales Service........................................................... 35

Ducted Type Split Air-Conditioner Units(Inverter Series)
1
1 Safety Precautions
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.
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.
WARNING!
This product can’t be installed at corrosive , inflammable or explosive
environment or the place with special requirements, such as kitchen or
washing room. 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.
1.2 Power Supply Demand
(1) Provided sufficient capacity of power supply and the cross area of
electrical wires.
(2) Confirm the reliable earth connection, and the earth wire should be
connected to special device of the building. Never connect the earth wire
to the gas pipe, water pipe, the earth wires of telephone and lighting rod.

Ducted Type Split Air-Conditioner Units(Inverter Series)
2
(3) Make sure that the wiring is done by the qualified technicians according to
the relevant regulations.
(4) In fixed circuit, there must be electricity leakage protection switch of
enough power capacity and air switch with enough space.
(5) An all-pole disconnection device which has at least 3mm separation
distance in all pole and a residual current device(RCD)with the rating of
above 10mA shall be incorporated in the fixed wiring according to the
national rule.
(6) The appliance shall be installed in accordance with national wiring
regulations.
(7) The temperature of refrigerant circuit will be high, please keep the
interconnection cable away from the copper tube.
2 Installation of Indoor Unit
2.1 Selection Proper Installation Location
(1) Avoid the direct sunshine.
(2) Make sure the suspension bracket is strong enough to withstand the unit’s
weight.
(3) Select a place for easily connection of the drain hose.
(4) The inlet and outlet ports should not be obstructed so that the indoor air
circulates well.
(5) Make sure the convenient connect of the connection pipes.
(6) Selection a location that is far away from the combustible or explosive
material and gas.
(7) Selection a location that is far away from the cankerous material, fog,
dusk or moist.
2.2 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.

Ducted Type Split Air-Conditioner Units(Inverter Series)
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(1) Below are the outline dimension applicable to indoor units:
a.20/25/30kW
b. 40kW
Fig.1

Ducted Type Split Air-Conditioner Units(Inverter Series)
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Below are dimensions of A,B,C, etc. for different models:
Unit: mm
Model A B
Size of air
supply
Size of air
return
G H I
C
E
D
F
FGR20Pd/DNa-X(I)
1355
632
992
192
1150
326
1315
760
385
FGR25Pd/DNa-X(I)
1563
707
992
192
1350
402
1520
840
450
FGR30Pd/DNa-X(I)
1563
707
962
262
1350
402
1520
840
450
FGR40Pd/D(2)Na-X(I)
1730
760
1054
359
1450
557
1680
900
650
(2) 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 2;
diameter of drilling hole is according to the diameter of expansion bolt
and the depth is 60-70mm, as shown in Fig 3.
Unit: mm
Fig.2 Fig.3
2) Insert the M10 expansion bolt into the hole and then knock the nail into
the bolt, as shown in Fig 4.
NOTES!
The length of bolt depends on the installation height of the unit, bolts are field
supplied.

Ducted Type Split Air-Conditioner Units(Inverter Series)
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Fig.4
(3) Install the indoor unit temporarily.
Assemble suspension bolt on the expansion bolt, attach the hanger bracket to
the suspension bolt. Be sure to fix it securely by using a nut and washer from upper
and lower sides of the hanger bracket. The washer fixing plate will prevent the
washer from falling.
(4) The usage of paper pattern.
Refer to paper pattern of installation for ceiling opening dimension. The center
of ceiling opening is indicated on the paper pattern. Fix the paper pattern to the unit
with 4 screws and fix the corners of the waterspout at the drainage pipe by screws.
(5) When the indoor unit is installed, the horizontal detection for the complete
unit must be performed. The unit should be placed horizontally from front
to rear side, while there should be 1-2% slope along the drainage
direction.
Fig.5
(6) Remove the washer locating plate and then tighten the nut on it.
(7) Remove the paper pattern.