Gree GWHD(48S)NM3DO User manual

Super Free Match Series
R410A Systems —Outdoor Unit
Owner's Manual
Gree Air Conditioners
GWHD(48S)NM3DO
GWHD(56S)NM3DO
Thank you for choosing Gree air conditioners, please read this owner’s manual carefully before
operation and keep it for future reference.
If you have lost the Owner’s Manual, please contact the local agent or visit www.gree.com or
sent email to [e-mail] for electronic version.

Preface
Super Free Match Series adopt the advanced manufacturing technology and takes the environmental-friendly
R410A as refrigerant, which is a green product in the 21st century. Please carefully read the manual before
installation and operation.
The total capacity of the indoor units which runs at the same time cannot exceed the capacity of the outdoor
units; otherwise, the cooling (heating) effect of each indoor unit would be lower than the nominal capacity.
The air conditioner must be installed by professional or qualified persons. And make sure that the manual is
kept by the operators or serviceman.
The appliance shall be installed in accordance with national wiring regulations.
The refrigerant pipes and accessories must be designed exclusively for R410A.
It is a normal phenomenon that the fan of indoor unit will still run for 20~70 seconds after the indoor unit
receives the “stop” signal so as to make full use of the waste heat.
When the work mode of the indoors is conflict with the modes of outdoor units, it will be indicated on the
display of the wired controller in five seconds and then the indoor unit will stop. In this case, please harmonize
their work modes: the cooling mode is compatible with the dry mode.
If the supply power fails when the unit is running, then the indoor unit will send the “start” signal to the
outdoor unit three minutes later after the power recovery.
The power cable and transmission line must not be twisted together, but instead of separated with an interval
of at least 2cm; otherwise it may be result in communication problem.
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.
If the appliance is fixed wiring, the appliance must be fitted with means for disconnection from the supply
mains having a contact separation in all poles that provide full disconnection under overvoltage category III
conditions, and these means must be incorporated in the fixed wiring in accordance with the wiring rules.
The batteries in remote controller must be recycled or disposed of properly. Disposal of scrap batteries--Please
discard the batteries as sorted municipal waste at the accessible collection point.
Before startup of the compressor, please turn on the main power switch of the unit for more than 8 hours and it
makes sure that the heater belt of the compressor has been energized for at least eight hours! Once the
compressor is started, it must be guaranteed that it works continuously for at least 30 minutes, otherwise it
would be damaged!
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.
Thank you for purchasing GREE air conditioners. Before using, please read this manual carefully and
keep it properly for further reference.

I
Contents
1Safety Precautions.....................................................................................................................1
2Attention for Installation...........................................................................................................3
2.1 Precautions for R410A..................................................................................................3
2.2 Precaution for Installation.............................................................................................3
2.3 Precaution for Operation Test........................................................................................3
2.4 Accessories....................................................................................................................3
3Product Introduction .................................................................................................................4
3.1 Names of Main Parts.....................................................................................................4
3.2 Combinations for Outdoor and Indoor Units ................................................................4
3.3 Parts and Components of Unit ......................................................................................5
3.4 Working Temperature Range.........................................................................................5
4Selection of Installation Location and Precautions...................................................................6
4.1 Selection of Installation Location .................................................................................6
4.2 Outline Dimension of Outdoor Unit..............................................................................7
4.3 Installation and Servicing Space...................................................................................7
5Installation Instruction ..............................................................................................................8
6Installation of Refrigerant Pipes ...............................................................................................9
6.1 Allowable Length and Drop Height of Connecting Pipe ..............................................9
6.2 Dimension of Connecting Pipe ...................................................................................10
6.3 Connection of Branch Pipe .........................................................................................10
6.4 Connection of Refrigerant Pipes.................................................................................11
6.5 Connection of Refrigerant Pipe...................................................................................12
6.6 Leak Test.....................................................................................................................13
6.7 Vacuum Operation.......................................................................................................13
6.8 Refrigerant Charging...................................................................................................14
7Electrical Wiring Work ...........................................................................................................17
7.1 Wiring Connection......................................................................................................17
7.2 Requirements of Power Circuit and Cable..................................................................18
7.3 Ground Requirements .................................................................................................19
7.4 Precautions of Electrical Wiring Work........................................................................19
7.5 Precaution of Laying Wires.........................................................................................20
7.6 Procedures for Electrical Wiring Work .......................................................................20
8Design of Drainage Pipeline...................................................................................................21
8.1 Installation of Drain Hose...........................................................................................21
8.2 Design of Drainage Pipeline .......................................................................................21
9Installation of Protective Layer...............................................................................................22
10 Test Operation.........................................................................................................................23
10.1 Check after Installation...............................................................................................23
10.2 Test Operation.............................................................................................................23
11 Troubleshooting......................................................................................................................24
11.1 Check before Contacting Service Center ....................................................................24
11.2 Problem Handling.......................................................................................................25