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Hitachi RAS-3HVRNME-AF - Common Wiring

Hitachi RAS-3HVRNME-AF
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PMML0205A rev.4 - 11/2012
32
12.3. COMMON WIRING
CAUTION:
All the eld wiring and electrical components must comply with
local codes.
12.3.1. ELECTRICAL WIRING BETWEEN INDOOR UNIT
AND OUTDOOR UNIT
Connect the electrical wires between the indoor unit and the
outdoor unit, as shown below.
Follow local codes and regulations when performing electrical
wiring.
Use twist pair wire (more than 0.75 mm²) for operation wiring
between outdoor unit and indoor unit, and operation wiring
between indoor unit and indoor unit.
Use 2-core wire 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 at length of less than 300 m and size
complied with local code.
Open a hole near the connection hole of power source wiring
when multiple outdoor units are connected from one power
source line.
The recommended breaker sizes are shown in Table of
electrical data and recommended Wiring, Breaker Size/1 O.U.
In the case that a conduit tube for eld-wiring is not used, x
rubber bushes with adhesive on the panel.
All the eld wiring and equipment must comply with local and
international codes.
ATTENTION:
Pay attention to the connection of the operating line. Incorrect
connection may cause the failure of PCB.
Operating Line
(Twisted shielded pair cable or
shielded pair cable)
DC5V (Non-Pole Transmission,
H-LINK system)
Operating Line
(Twisted shielded pair cable or shielded pair cable)
DC5V (Non-Pole Transmission, H-LINK system)
TB
:
Terminal Board
CB
:
Circuit Breaker
ELB
:
Earthleakage Breaker
:
Internal Wiring
:
Field Wiring
:
Field-Supplied
1,2
:
Outdoor-Indoor connection
ATTENTION:
The power supply must be connected to the outdoor unit and
indoor unit separately.
ELECTRICAL WIRING

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