Hitachi UTOPIA R410A Series - 10.2 ELECTRICAL WIRING CONNECTION FOR OUTDOOR UNITS

10.2 ELECTRICAL WIRING CONNECTION FOR OUTDOOR UNITS
The electrical wiring connection for the outdoor unit is shown in

Power supply
1~ 230V


Control cable
(5V)
Control cable
(5V)
Power supply
3N~ 400V
Table for Terminal Connection between units
Wiring System
Units type
Connection of terminals
Power Supply DC inverter
O.U. to O.U.
L1 to L1, L2 to L2, L3 to L3, N to N
I.U. to I.U.
L1 to L1, N to N
Operating DC inverter
O.U. to I.U. or I.U. to I.U.
1 to1, 2 to 2
Remote Control DC inverter
I.U. to I.U.
A to A, B to B
O.U.: Outdoor Unit; I.U.: Indoor unit
3
RST
MP
N
Electrical box
Control wiring
Screw (M5)
Screw (M5)
Screw (M4)
Screw (M4)
Earth terminal
Earth terminal
Earth wire
Communication
wiring
Earth wire
Ring core Yellow
Wind the wire 3 times

Power
source
wiring
Power
source
wiring
Detail of terminal block for power source
and control circuit.

circuit wiring)

power source wiring, control circuit wiring and earth wire)

Ring core Green
Wind the wire 4 times


? NOTE
InsertthepowersourcecablesL1andN(for1~230V50Hz)intothe
yellowringcore,coilingthemwith3turnsandxthecablesusingthe
cabletie(accessory).Asshowninnextgure,donotinsertthecables
fromdifferentsidesintotheringcore.
Insertthegroundcableintothegreenringcore,coilingthemwith4turns
andxthecablesusingthecabletie.
Electric wiring
PMML0545 rev.2 - 04/2021
14
EN