Hitachi Set Free Série Manuel D'installation page 73

Electrical wiring
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
Outdoor unit power source
3N~ 400V 50Hz
Outdoor
Outdoor
unit C
unit B

Heat recovery system
Outdoor unit power source
3N~ 400V 50Hz
Outdoor
Outdoor
unit C
unit B
* Heat Recovery System
59
PMML0294A_rev.2_02-2014.indb 59
Indoor unit side
Outdoor
unit A
Indoor unit
power source
1~ 230V 50Hz
Indoor unit side
Outdoor
unit A
Indoor unit, CH unit
power source
1~ 230V 50Hz
PMML0294A rev.2 - 07/2014
Indoor
Indoor
unit
unit
Indoor Indoor
unit 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*)

14/07/2014 12:28:34