Main Unit and Piping
Electrical
Test Operation
Reference
49
10. Power Supply Wiring Procedure
[Stand-alone installation]
Important reminder
Do not connect the indoor/outdoor unit signal wires of a different system.
Doing so could result in improper operation.
In order to avoid
attaching 3 wires to
the terminal, connect
the wire from the
terminal unit of the
outdoor and outdoor
unit wiring.
If there is a branching,
use a relay terminal.
To the other system
All of indoor/outdoor and
outdoor/outdoor unit signal
wires must be non-polarity
2 core cable.
RC
RC
RC
RC
RC
Point
Point
Be sure to wire for ever y
refrigerant piping system.
Indoor/outdoor unit signal wire
Point
Signal wire between refri-
gerant piping systems.
Maximum number of the
connectable refrigerant
piping systems is 10.
Outdoor/outdoor unit signal wire
Point
Important reminder
Maximum number of the connectable indoor units on a network is 128.
Signal wires between the indoor units of the same refrigerant system must
be connected to the In-Out terminal of the outdoor unit in the same system.
The signal wires cannot be connected to the Out-Out terminal, or an
outdoor unit in the different system.
Single-phase
230 VAC
or 208 VAC
Power supply
Single-phase
230 VAC
or 208 VAC
Power supply
Single-phase
230 VAC
or 208 VAC
Power supply
Remote controller
Indoor unit
Remote controller
Outdoor unit C
(Master unit)
Outdoor unit A
(Master unit)
Single-phase
230 VAC
or 208 VAC
Power supply
Power supply
I : In
O : Out
RC: Remote controller
Centralized
control unit
Indoor unit
RC
System
System
①
②
Summary of Contents for AWGP180E1NHS
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