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ELECTRICAL WORK
Perform the electric safe check after completing installation:
1. Insulated resistance
The insulated resistance must be more than 2M .
2. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and
grounding resistance tester. Make sure the grounding resistance is less than 4 .
3. Electrical leakage check (performing during test running)
During test operation after finishing installation, the serviceman can use the electroprobe and
multimeter to perform the electrical leakage check. Turn off the unit immediately if leakage
happens. Check and find out the solution ways till the unit operate properly.
Electrical safety check
Connect the cable between the outdoor unit
1. Remove the front air-inlet grille from the indoor unit by loosening the screws.
2. Connect the cable to the indoor unit by connecting the wires to the terminals on the control
board individually according to the outdoor unit connection.
,
3. Ensure the colour of wires of outdoor unit and the terminal Nos. Are the same to the indoor s
respectively.
4. Secure the cable onto the control board with the holder.
1. Please pay attention to the surroundings (environmental temperature, direct sunlight, rain etc.)
2. We consider the minimal size of the metal core as the wire size. So it is recommended you
adopt a thicker one as the power conducting wire so as to avoid power decrease;
3. Connect the grounded wire to both indoor and outdoor units;
4. This table is just an on-site wire-connecting example. For details, please refer to relative
National criteria.
NOTE:
NOTE: The cable size and the current of the fuse or switch are determined by the maximum current
indicated on the nameplate which located on the side panel of the unit. Please refer to the
nameplate before selecting the cable, fuse and switch.
Model Power supply Input Rated Amp
(Switch/Fuse) Power Cord Size
32/25A
32/25A
63/50A
63/50A
2
4mm
2
6mm
2
2.5mm
2
2.5mm
220-240V~ 50Hz
or
208-230V~60Hz
380-420V~ 50Hz
or
380-420V~60Hz
<30000Btu/h
30000~48000Btu/h
30000~48000Btu/h
>48000Btu/h
>48000Btu/h
16/16A
2
1.5mm
13


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