Fujitsu Airstage J-II Series Design & Technical Manual page 605

„ POWER SUPPLY CABLE WIRING
„
z Example : Power supply cable wiring. (Using terminal board for indoor units)
„
● 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, convertor or external input device and then
cut the breaker.
● Make sure to operate through the control unit, convertor 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.
● When approved for use in local code, we suggest installing Ground Fault Equipment Breaker
(GFEB). In that case, GFEB shall be per Fujitsu recommended capacity in order to prevent
malfunction of breaker device.
Outdoor unit power supply
1ø 60Hz 208/230V
Indoor unit power supply
1ø 60Hz 208/230V
CAUTION
AOU60
Sub Breaker
40A
Power cable
Sub Breaker
40A
Power cable
Sub Breaker
40A
Power cable
Sub Breaker
15A
Terminal board
Terminal board
Sub Breaker
15A
- (06 - 41) -
Outdoor units
AOU48 AOU36
Connected within
refrigerant system.
Total MCA ≤ 11 (A).
Maximum
connectable indoor
unit (Ground Fault
Equipment Breaker
requirements)*
Indoor
units
Power cable
Indoor
units
+