Common Wiring; Electrical Wiring Between Outdoor And Indoor Unit - Hitachi RAS-H(V)RNME-AF Service Manual

4 Electrical wiring

4.3 Common wiring

C A U T I O N
All the field wiring and electrical components must comply with local codes.

4.3.1 Electrical wiring between outdoor and indoor unit

- Connect the electrical wires between the indoor unit and the outdoor unit, as shown in the next diagram.
- Follow the local codes and regulations when performing the electrical wiring.
- Use twist pair wires (more than 0.75 mm²) for operation wiring between outdoor unit and indoor unit.
- Use 2-core wires for the operating line (Do not use wire with more than 3 cores).
- Use shielded wires for intermediate wiring to protect the units from noise obstacle and sizing in compliance with
local codes.
- In the event that a conduit tube for field-wiring is not used, fix rubber bushes to the panel with adhesive.
All the field wiring and equipment must comply with local and international codes.
-
C A U T I O N
Pay attention to the connection of the operating line. Incorrect connection may cause PCB failure.
N O T E
The power supply must be connected to the outdoor unit and indoor unit separately.
97
SMGB0070 rev.1 - 08/2011
Outdoor unit
RAS-2HVRN2
RAS-3~6HVRNME-AF
RAS-(3-6)HVRNME-AF
Indoor unit
Indoor Unit
RWM-(2.0-6.0)FSN3E
RWM-3~6FSN3E
TB Terminal Board
:
CB Circuit Breaker
:
ELB Earth Leakage Breaker
:
:
Internal Wiring
:
Field Wiring
:
Field-Supplied
1,2
Outdoor-Indoor connection
:
Operating Line
(Twisted shielded pair cable or shielded pair
cable)DC5V (Non-Pole Transmission, H-LINK
system)
Operating Line
(Twisted shielded pair
Outdoor unit
cable or shielded pair
RAS-(4-10)HRNME-AF RAS-4~6HVRNME-AF
cable)
DC5V (Non-Pole Trans-
mission, H-LINK system)
Indoor unit
Indoor Unit
RWM-(4.0-10.0)FSN3E
RWM-4~6FSN3E
4