26
E
7. Electrical work
7.6. System control
s
One remote controller can be used to operate multiple units.
This function of group control allows you to operate multiple units (a maxi-
mum of up to 50 units) as one group with one remote controller.
1
General wiring diagram
A
Outdoor unit
B
Indoor unit No.0 (master unit)
C
Indoor unit No.1
D
Indoor unit No.2
E
Remote controller terminals
F
Remote controller
2
Connect as follows:
s
Connect the remote controller to the terminal of the group master
indoor unit (Unit No. 0).
s
Connect the terminals of the master unit to the terminals of slave
unit with two wires. Then, connect the terminals of that slave unit
to the terminals of the next unit and so on until all units are con-
nected. (The total cord length of the remote controller and the
connection among units should not exceed 500 metres.)
A
A
B
C
G
E
F
I
H
J
J
D
B
E
F
A
B
A
C
A
D
7.5. Power supply wiring diagram (exam-
ple)
Electric wiring should be done according to the appropriate wiring dia-
gram for the model being installed.
For electric wire specifications, see page 31. Be sure to comply with those
specifications.
A
Power supply
B
Main switch/fuse (purchased locally)
C
Power supply wiring for outdoor unit
D
Power supply wiring for indoor unit
E
Outdoor unit
F
Indoor unit
G
Connection wiring for indoor/outdoor units (polarity)
H
Remote controller
I
Connection wiring for indoor/remote controller (no polarity)
J
Grounding
Caution:
Both units must be grounded.
Summary of Contents for 2.5KKC
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