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Wiring example
CAUTION
• Except for emergency, never turn off main as well as sub breaker of the indoor units during op-
eration. It will cause compressor failures as well as water leakage.
• First, stop the indoor unit by operating the control unit, converter, or external input device, and
then cut the breaker.
• Make sure to operate through the control unit, converter, or external input device.
• When the breaker is designed, locate it at a place where the users cannot start and stop in the
daily work.
• Regulation of wire size and circuit breaker differs from each locality, refer in accordance with the
regional standard.
• Example 1: Using terminal board for indoor unit
AJ*144LE
AJ*162LE
AJ*090LE
AJ*072LE AJ*108LE AJ*126LE
Sub breaker
Sub breaker
Sub breaker
20 A
25 A
40 A
Power cable
6 mm
2
Power cable
6 mm
2
Power cable 10 mm
2
Sub breaker
Terminal board
Terminal board
Sub breaker
20 A
20 A
Indoor unit power supply
1ø 50 Hz 230 V
Outdoor unit power supply
3ø 50 Hz 400 V: AJ*xxxLE
Power cable
2.5 mm
2
Indoor
units
Indoor
units
Connected within
refrigerant system.
Total MCA ≤ 15 (A).
Total Sub breaker ≤ Main breaker
4-2. Power supply cable - (06-53) - 4. Wiring design
SYSTEM
DESIGN
SYSTEM
DESIGN
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