5
Indoor unit installation
Rated current of appliance (A)
Choose the right cable size
The size of the power supply cable, signal cable, fuse, and switch needed is determined by the
maximum current of the unit. The maximum current is indicated on the nameplate located on the side
panel of the unit. Refer to this nameplate to choose the right cable, fuse, or switch.
Take note of fuse specifications
The air conditioner's circuit board (PCB) is designed with a fuse to provide overcurrent protection. The
specifications of the fuse are printed on the circuit board, such as: T3.15A/250VAC, T5A/250VAC, etc.
Indoor unit: T5A/250VAC
Outdoor unit (applicable to units adpot R32 or R290 refrigerant only):
T20A/250VAC (<=18000Btu/h units)
T30A/250VAC (>18000Btu/h units)
C
Note: The fuse is made of ceramic.
Split-type room air conditioner / Installation Manual
Minimum cross-sectional area of power and signal cables
North America
Appliance Amps (A)
10
13
18
25
30
Other regions
> 3 and ≤ 6
> 6 and ≤ 10
> 10 and ≤ 16
> 16 and ≤ 25
> 25 and ≤ 32
> 32 and ≤ 40
COOL mode
18
16
14
12
10
Nominal cross-sectional area
(mm²)
0.75
1
1.5
2.5
4
6
23 / 120 EN