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Wiring penetrating hole
Remote controller
wiring/transmission wiring
Sealing material
(Small) (13)
(accessory)
Putty or insulation
(field supply)
Fig. 24
<<Mending method of wiring penetrating hole>>
• After wiring connection is finished, to prevent the penetra-
tion of water, small animals and insects into the indoor unit
from the outside, mend the respective covers for wiring
penetrating hole for the power supply wiring/ground wiring
and the remote controller wiring/transmission wiring.
• Cut the sealing material (Small) (13) into two pieces and
wrap each wiring with each piece.
• Seal the clearance around the wirings with putty and insu-
lating material (field supply).
If insects and small animals get into the indoor unit, short
circuiting may occur inside the control box.
• Keep the distance of 1-15/16 in. (50 mm) or more between
low voltage wiring (remote controller wiring, transmission
wiring) and the high voltage wiring (power supply wiring,
ground wiring) at anywhere outside the indoor unit. If both
wirings are laid down together, they may be affected by
outside electrical noise and cause malfunction or failure.
7-5 EXAMPLE OF WIRING
• The power wiring should be installed to meet local and na-
tional code. Fig.25 is one example of a wiring configuration.
COMPLETE SYSTEM EXAMPLE (3 systems)
Power supply
Main
switch
BS unit
(Only for
Heat
recovery system)
Indoor unit
Remote controller
Fig. 25
3P161684-7N
English
1.When using 1 remote controller for 1 indoor unit.
(Normal operation)
Power supply
single phase
208/230 V
2. For group control or use with 2 remote controllers
Power supply
single phase
3. When including BS unit
Power supply
Power supply wiring
Transmission wiring
Switch
Fuse
[ PRECAUTIONS ]
1. Do not ground the equipment on gas pipes, water pipes
Outdoor unit
Power supply
single phase
Control box
IN/D OUT/D
208/230 V
F
F
F
F
1
2
1
2
L
L
L
L
1
2
1
2
60 Hz
60 Hz
No. 1
System
L
L
P
P
F
F
T
T
L
L
P
P
F
F
2
1
1
2
1
2
1
2
2
1
1
2
1
2
Indoor
Indoor
unit A
unit B
P
P
P
P
1
2
1
Fig. 26
Note: It is not necessary to designate indoor
unit address when using group
control. The address is automatically
set when power is activated.
Power supply
Outdoor unit
single phase
208/230 V
208/230 V
Control box
IN/D OUT/D
60 Hz
60 Hz
F
F
F
F
1
2
1
2
L
L
L
L
1
2
1
2
No. 2
System
Indoor
unit A
L
L
P
P
F
F
T
T
L
L
P
P
F
F
T
T
2
1
1
2
1
2
1
2
2
1
1
2
1
2
1
2
Indoor
unit B
P
P
1
2
Fig. 27
Outdoor unit
single phase
Control box
208/230 V
IN/D OUT/D
F
F
F
F
1
2
1
2
L
L
60 Hz
1
2
BS unit
No. 3
Control box
System
OUT/D
IN/D
F
1
F
2
F
Indoor unit A
L
L
P
P
F
F
T
T
2
1
1
2
1
2
1
2
P
P
1
2
Fig. 28
or lightning rods, or crossground with telephones. Im-
proper grounding could result in electric shock.
WARNING
Be sure to install an ground leakage breaker.
Failure to do so may cause electric shocks and a fire.
Power supply
Power supply
single phase
single phase
208/230 V
208/230 V
L
L
L
L
1
2
1
2
60 Hz
60 Hz
T
T
L
L
P
P
F
F
T
T
L
L
P
P
F
F
T
T
1
2
2
1
1
2
1
2
1
2
2
1
1
2
1
2
1
2
Indoor
Most
unit C
downstream
indoor unit
P
P
P
P
2
1
2
1
2
Power supply
Power supply
single phase
single phase
208/230 V
208/230 V
60 Hz
60 Hz
L
L
L
L
1
2
1
2
Most
downstream
indoor unit
L
L
P
P
F
F
T
T
L
L
P
P
F
F
T
T
2
1
1
2
1
2
1
2
2
1
1
2
1
2
1
2
Indoor
unit C
P
P
P
P
1
2
1
2
For use with 2
remote controllers
Power supply
single phase
208/230 V
L
L
1
2
60 Hz
BS unit
Control box
OUT/D
IN/D
1
F
2
F
1
F
2
F
1
F
2
Most
L
L
P
P
F
F
T
T
2
1
1
2
1
2
1
2
downstream
indoor unit
P
P
1
2
14
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