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INSTALLATION AND OPERATION MANUAL
34
13.3.1. 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.
−
If the refrigerant piping and the control wiring are connected to the
−
units in the same refrigerant cycle.
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).
Indoor unit power supply from outdoor unit
Terminal board
Circuit Breaker
Earthleakage Breaker
Field Wiring
Field supplied
Optional Accessory
13.3.2. WIRE SIZE
Recomended minimum sizes for field provided wires:
”
Model
All Indoor Units
RAS-3HVRNME
RAS-4HVRNM1E/HVRNS1E
RAS-5HVRNM1E/HVRNS1E
RAS-6HVRNM1E/HVRNS1E
RAS-4HRNM1E
RAS-5HRNM1E
RAS-6HRNM1E
- The above wire sizes marked with are selected at the maximum current of the unit according to the European Standard, EN60 335-1.
- The above wire sizes marked with are selected at the maximum current of the unit according to the wire, MLFC (Flame Retardant Polyflex
Wire) manufactured by HITACHI Cable Ltd. Japan.
PMML0197_r0_04-10.indb 34
No. 0 System
Outdoor unit
Operating Line (Twisted Shielded Pair
Cable or Shielded Pair Cable)
DC5V (Non-Pole Transmission,
H-LINK System)
Indoor Unit
Indoor Unit
Remote
Control
Switch
(Max. 3 Units per Refrigerant Cycle)
Power Source
Max. Current
1~ 230V 50Hz
1~ 230V 50Hz
3N~ 400V 50Hz
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 field-wiring is not used, fix rubber
−
bushes with adhesive on the panel.
All the field 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.
Power supply of outdoor unit and indoor unit separately
Power Source Cable Size
EN60 335-1
5A
0.75 mm²
0.5 mm²
14A
4.0 mm²
2.0 mm²
18A/24A
4.0 mm²/6.0 mm
2.0 mm²
2
26A
6.0 mm²
3.5 mm²
26A
6.0 mm²
5.5 mm²
7A
2.5 mm²
2.0 mm²
11A
2.5 mm²
2.0 mm²
13A
4.0 mm²
2.0 mm²
No. 0 System
Outdoor unit
Operating Line (Twisted
Shielded Pair Cable or
Shielded Pair Cable)
DC5V (Non-Pole
Transmission,
H-LINK System)
Indoor Unit
Indoor Unit
Remote
Control
Switch
(Max. 3 Units per Refrigerant Cycle)
Transmitting Cable Size
MLFC
EN60 335-1
MLFC
0.75 mm²
0.5 mm²
08/07/2010 9:20:56
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