System Wiring Diagram; Transmission Wiring Between Outdoor And Indoor Unit - Hitachi YUTAKI S COMBI Series Instruction Manual
Split air to water heat pump
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Also See for YUTAKI S COMBI Series:
- Instruction manual (560 pages) ,
- Installation and operation manual (80 pages) ,
- Instruction and operation manual (194 pages)
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ELECTRICAL AND CONTROL SETTINGS
5.2 SYSTEM WIRING DIAGRAM
Connect the units according to the following electric diagram:
:
TB
Terminal board
:
CB
Circuit breaker
:
ELB
Earth leakage breaker
:
Internal wiring
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.
•
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.
15
PMML0338B rev.1 - 03/2016
:
Field wiring
:
Field-supplied
:
1,2
Outdoor-Indoor communication
Outdoor unit
RAS-WHVNP(E)
(Twisted shielded pair cable or shielded pair cable)
DC5V (Non-Pole Transmission, H-LINK system)
YUTAKI S COMBI
Indoor unit
1
2
Outdoor unit
1
2
Operating Line
Outdoor unit
RAS-WHNPE
Operating Line
(Twisted shielded
pair cable or
shielded pair
cable)
DC5V (Non-Pole
Transmission,
H-LINK system)
YUTAKI S COMBI
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