Sanyo CH2442 Installation Instructions Manual page 64

7-17. Wiring System Diagram for Group Control
This diagram shows when several units (maximum of
8) are controlled by a signal receiving unit (master
unit). In this case, a signal receiving unit can be
connected at any indoor unit.
Signal receiving unit
Connection wiring for
1 2
group control
Wire joint
(2 wires)
1 2 1 2
Indoor unit Indoor unit
No. 1 No. 2
1 2 1 2
Inter-unit
control
wiring
1 2
Outdoor unit
: Ground (earth)
Group control using 2 signal receiving unit.
It does not matter which of the 2 signal receiving unit
you set as the main controller.
Signal
receiving unit
(main)
Connection wiring
1 2
for group control
Wire joint
(2 wires)
1 2
Indoor unit
No. 1
: Ground (earth)
1 2
Indoor unit
No. 3
1 2
(sub)
1 2
1 2 1 2
Indoor unit Indoor unit
No. 2
No. 3
Wiring procedure
Wire according to the left diagram:
Address setting is executed automatically when the
1 2
outdoor unit is turned on.
Indoor unit
No. 8
Each successive unit will respond at one-second
1 2
intervals following the order of the group address
when the remote controller is operated.
2037_M_I
When using multiple signal receiving unit (up to 2 of
them can be used), one is the main signal receiving
unit and the other is the sub-signal receiving unit.
To set up a sub-signal receiving unit, change its
remote control address connector (RCU. ADR)
located on its PCB from main to sub position (main:
when shipped from factory).
1 2
Indoor unit
No. 8
2038_M_I
63 S4359146
7 7 7 7 7
RC
(WL)