Precaution Of Laying Wires; Electrical Wiring Work For Outdoor Unit - Gree GWHD(48S)NM3CO Service Manual

device of the building by the professional.
The electric installation should be carried out by the professional as instructed by the local laws,
regulations and also this manual.
The air switch coupled with the leakage current protection switch must be equipped in the circuits, which
is of enough capacity and of both magnetic and thermal tripping functions in case of the short circuit and
overload.
The power supply of the outdoor unit and all the BU modules should be separately.
The electrical work should use a cable length enough to cover the entire distance with no connection. If it
is unavoidable, please make sure the connection should be reliable, the external forces will not act on the
wires and the joint is not bared. Otherwise it will cause electrical shock or fire etc.
The power cable with the rated voltage and exclusive circuit for the air conditioning should be used.
Do not pull the power cable by force after it is installed.
The diameter of the power cable should be large enough and once it is damaged, it must be replaced by
the dedicated one.
The multi-wire copper cable should be used for the power cable and the transmission line.

7.5 Precaution of Laying Wires

1) Use a wire stripper to strip off a length of the insulation layer at the end of the wires;
2) Loosen the screws on the terminal block of the air conditioner;
3) Press the ends of the cable tightly onto the round terminals corresponding to the size of the screws.
4) Pass the screw through the round terminals and fix it onto the terminal block.

7.6 Electrical Wiring Work for Outdoor Unit

1) Knock the holes in the plate of the chosen direction with the hammer.
2) Place the rubber ring on the knockout hole.
3) Let the power cable and transmission line go through the knockout hole.
4) Connect the power cable of the outdoor unit to the L1, L2, L3, N terminals and as well as the ground
screw.
5) Connect the transmission line of the outdoor unit to the N(1), 2 terminals.
6) Fix the power cable and transmission line firmly by cable fixing clip.
7) Screw the coping plate, front side plate, right connection board, front connection board back.
8) Cover the through-holes with sealing materials to prevent the water, dust or small animals going into the
outdoor unit.
Caution！
The transmission line and the power cable must be separated and separated with an interval of at least
2cm; otherwise it may be
In order to protect the power cable and transmission line from damaging by the hole, the rubber ring
must be placed on the hole. Otherwise, it
result in communication problem.
may cause electrical shock or fire etc.
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109 INSTALLATION