Hitachi RPC-6.0FSN3 - Connection of the Power Supply Circuits

10.3 CONNECTION OF THE POWER SUPPLY CIRCUITS
Power source wiring.
Supply the power sources to each outdoor unit and indoor unit group respectively. Power source wiring is fundamentally according to
this method.

Heat pump system
Indoor
unit
Outdoor unit power source
3N~ 400V 50Hz
Outdoor
unit A
Outdoor
unit B
Outdoor
unit C
Indoor unit side
Indoor unit
power source
1~ 230V 50Hz
Indoor
unit
Nº. Part name

ELB (Earth Leakage Breaker)

FUSE or CB

S (main switch)

Power source wiring (OU)

Earth wiring (OU)

Transmission wiring (OU~IU)

Transmission wiring (OU~OU)

Power source wiring (IU, CH unit*)

Earth wiring (IU, CH unit*)

Heat recovery system
Outdoor unit power source
3N~ 400V 50Hz
Outdoor
unit A
Outdoor
unit B
Outdoor
unit C
Indoor unit side
Indoor unit, CH unit
power source
1~ 230V 50Hz
Indoor
unit
Indoor
unit
* Heat Recovery System
59
PMML0294A rev.2 - 07/2014
Electrical wiring
ENGLISH
PMML0294A_rev.2_02-2014.indb 59 14/07/2014 12:28:34