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2. For group control or use with 2 remote controllers
Power supply
Outdoor unit
220-240V
50Hz
L N
or
220V
60Hz
Indoor
L N
unit A
3. When including HR box
[ PRECAUTIONS ]
1. A single switch can be used to supply power to units on the same system. However, branch switches and
branch circuit breakers must be selected carefully.
2. Do not ground the equipment on gas pipes, water pipes or lightning rods, or crossground with telephones.
Improper grounding could result in electric shock.
9-4 CONTROL BY 2 REMOTE CONTROLLERS (Controlling 1 indoor unit by 2 remote controllers)
• When using 2 remote controllers, one must be set to "MAIN" and the other to "SUB".
MAIN/SUB CHANGEOVER
(1) Insert a wedge-head screwdriver into the recess between
the upper and lower part of remote controller and, working
from the 2 positions, remove carefully the upper part.
The remote controller PC board is attached to the upper
part of remote controller.
15
Note: It is not necessary to designate indoor unit address when using group control.
Control box
IN/D OUT/D
F
1
F
2
F
1
F
2
No. 2
System
Indoor unit B
P
P
F
F
T
T
L N
P
1
2
1
2
1
2
1
P
P
1
2
Power supply
220-240V
50Hz
L N
or
220V
60Hz
The address is automatically set when power is activated.
Indoor unit C
P
F
F
T
T
L N
P
P
F
F
2
1
2
1
2
1
2
1
Outdoor unit
Control box
IN/D OUT/D
F
F
F
F
1
2
1
2
No. 3
System
OUT/D
L N
P
P
F
F
T
T
1
2
1
2
1
2
Indoor unit A
P
P
1
2
Insert the screwdriver here and gently work
off the upper part of remote controller.
T
T
L N
P
P
F
F
T
2
1
2
1
2
1
2
1
P
P
1
2
For use with 2
remote controllers
HR box
Control box
IN/D
F
F
F
F
1
2
1
2
Upper part of
remote controller
Lower part of
remote controller
Most
T
2
downstream
indoor unit
P
P
1
2
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