Fujitsu AOU48RLXFZ Design & Technical Manual page 194

POWER SUPPLY CABLE WIRING
● Except for EMERGENCY, never turn off main as well as sub breaker of the indoor units during
operation. It will cause compressor failure as well as water leakage.
● First, stop the indoor unit by operating the control unit or external input device and then cut the
breaker.
● Make sure to operate through the control unit 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, please refer in accordance
with local rules.
Example 1 (Outdoor unit)
Outdoor unit
Example 2 (Branch box & indoor unit)
Branch box - Indoor unit
Power supply
1ø 208/230V 60Hz
Branch box - Indoor unit
Power supply
1ø 208/230V 60Hz
Branch box - Indoor unit
Power supply
1ø 208/230V 60Hz
Caution
Circuit breaker (over current)
Earth leakage breaker
Circuit breaker
(over current)
Branch box
Earth leakage
breaker
Circuit breaker
(over current)
Branch box
Earth leakage
breaker
Circuit breaker
(over current)
Branch box
Earth leakage
breaker
- (06 - 40) -
Outdoor unit
Power supply
1ø 208/230V 60Hz
Indoor units
6. SYSTEM DESIGN