Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 898

FDC-HKX
Models FDC224, 280type
Power source (outdoor unit side)
3phase 380/415V50Hz
Earth leakage
breaker
Circuit Breaker
Indoor
Circuit breaker
unit
Earth leakage
<I>
remote
breaker
controller wire
Remote controller
Power source (indoor unit side)
1phase 220/240V50Hz
Outdoor/Indoor units connection procedures
Signal wire
• Do not connect high voltage wire 380/415V to signal wires, as these wires are DC 5V. Signal wires should be connected so that the
terminal Nos. conform with each other for between outdoor and between indoor units. However, they will work properly if different
polarities are connected. (Connect (A) and (A), (B) and (B).)
896
Outdoor unit
Earth
Signal wire (Between indoor units)
<II> <III> <IV>
Outdoor unit
Indoor unit side
power supply wire
A B
L
N
X Y Z
Indoor unit
<I>
Remote controller wire
X Y Z
Signal wire (Between outdoor and indoor units)
<V> <VI> <VII>
A B
Signal wire (Between outdoor and indoor units)
Signal wire (Between indoor units)
A B
L
N
X Y Z
<II>
Remote Remote
X Y Z
controller controller
<VIII>