ENGLISH
5.2
SYSTEM WIRING DIAGRAM
Connect the units according to the following electric diagram:
TB
:
Terminal board
:
Field wiring
CB
:
Circuit breaker
:
Field-supplied
ELB
:
Earth leakage breaker
1,2
:
Outdoor-Indoor communication
:
Internal wiring
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)
Optional
Optional
Tank’s thermistor cable
Tank’s electric heater cable
Unit controller cable
Outdoor unit
RAS-WHVNP(E)
Outdoor unit
RAS-WHNPE
Indoor unit
RWH-VNF(W)E
Indoor unit
RWH-NF(W)E
5.3
TRANSMISSION WIRING BETWEEN OUTDOOR AND INDOOR UNIT
• The transmission is wired to terminals 1-2.
• The H-LINK II wiring system requires only two transmission cables that connect the indoor unit and the outdoor unit.
1
1
2
2
Indoor unit
Outdoor unit
• Use twist pair wires (0.75 mm²) for operation wiring between outdoor unit and indoor unit. The wiring must consist of 2-core wires
(Do not use wire with more than 3 cores).
• Use shielded wires for intermediate wiring to protect the units from noise interference, with a length of less than 300 m and a size
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.
!
C A U T I O N
Ensure that the transmission wiring is not wrongly connected to any live part that could be damaged the PCB.
ELECTRICAL AND CONTROL SETTINGS
PMML0340B rev.1 - 03/2016
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