Common Wiring - Hitachi YUTAKI S Series Installation And Operation Manual

12.3. COMMON WIRING

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.
Check to ensure that the terminal for power source wiring
(terminals "L1" to "L1", "L2" to "L2", "L3" to "L3" and "N" to
"N" of each terminal board: AC380-415V), and intermediate
wires (Operating Line: terminals "1" to "1" and "2" to "2" of each
terminal board: DC5V) between the indoor unit and the outdoor
unit coincide correctly. If not, some component will be damaged.
Follow local codes and regulations when performing electrical
wiring.
Use twisted shielded pair wiring for operation wiring between
outdoor unit and indoor unit, and also for operation wiring
between indoor units (H-Link connection)
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 be outdoor unit and indoor unit separately.
34
PMML0215A rev.1 - 02/2012
It can be also used Shielded pair wiring.
Shield shall be connected to earth only in one cable side.
Do not use more than 3 cores for operation wiring (-H-Link).
Core sizes must be selected according to the national
regulations.
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.
Operating Line
(Twisted shielded pair cable or
RAS-8/10HVRNME-AF
shielded pair cable)
DC5V (Non-Pole
Transmission, H-LINK system)
Indoor Unit
RWM-8/10FSN3E
ELECTRICAL WIRING