Hitachi RPC-1.5FSN3 - Transition Wiring for Remote Control Switch

32
P5416543
7.4 Transition Wiring for Remote Control Switch
In the twin, triple, and quad combination of indoor units, the transition wiring for the remote control switch is
not required. However, when connecting indoor units without transition wiring for remote control switch, the
followings are limited.
(2) The following connection is NOT available.
(a) Connection between Main Units without Transition Wiring
When the indoor units in multiple refrigerant cycles are controlled by one remote control switch, all
the indoor units are required to be connected with the transition wirings.
(b) Connection between Main Unit without Transition Wiring and Unit with Transition Wiring
When the indoor units in multiple refrigerant cycles are controlled by one remote control switch, all
the indoor units are required to be connected with the transition wirings.
(1) The following functions are available to set only to
the main unit with the remote control switch PC-ARF.
* “Remote ON/OFF function, 1 and 2"
* “Power supply ON/OFF function, 1 and 2"
* “Prohibiting operation by remote control switch”
Incorrect Correct
Incorrect Correct
(c) Connecting Remote Control Switch to Sub unit without Transition Wiring
When the indoor units are controlled by 2 remote control switches, the sub remote control switch
shall be connected to the main unit.
Incorrect Correct
Power Source Wiring
Transition wiring is unnecessary.
Remote
Control
Switch
(PC-ARF)
Main
Sub Sub SubMain
Main
Sub Sub SubMain
Main
Sub Main Sub
Main
Sub Main Sub
Main
Sub
Main
Sub