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English
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CAUTION
CAUTION FOR MENDING THE COVER
• In case the cover for penetrating piping is cut off and used
as wiring penetrating hole, after the wiring connection is
finished, mend the cover.
• Cut the sealing material (Small) (9) into two pieces and
wrap each wiring with each piece.
• Seal the clearance around the wiring 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.)
• If the low voltage wiring (remote controller wiring, trans-
mission wiring) and the high voltage wiring (power supply
wiring, earth wiring) are brought into the indoor unit from
the same place, they may be affected by electric noise
(outside noise) and cause malfunction or failure.
• Keep the distance of 50mm between the low voltage wir-
ing (remote controller wiring, transmission wiring) and the
high voltage wiring (power supply wiring, earth wiring) at
anywhere outside the indoor unit.
If both the wiring are laid down together, they may be
affected by electric noise (outside noise) and cause mal-
function or failure.
WARNING
•
When wiring, form the wiring orderly so that the control box
lid can be securely fastened.
If the control box lid is not in place, the wiring may float up
or be sandwiched by the box and the lid and cause electric
shocks or a fire.
8-5 WIRING EXAMPLES
< No.1 system: When 1 remote controller is used for 1
indoor unit >
< No.2 system: When carrying out group control or 2
remote controllers control >
< No.3 system: When BS unit is used >
NOTE
•
Remote controller wiring and transmission wiring do not have
polarity.
WARNING
Be sure to install an earth leakage circuit breaker.
Failure to do so may cause electric shocks and a fire.
Sealing material (Small) (9)
Remote controller/
transmission wiring
Power supply wiring/
earth wiring
Fig. 39
Seal with putty and insulating
material.
Indoor unit A
Indoor unit B
Most
downstream
Indoor unit
Power supply
220-240V/
220·230V
~
50Hz/60Hz
Power supply
220-240V/
220·230V
~
50Hz/60Hz
Power supply
220-240V/
220·230V
~
50Hz/60Hz
Outdoor unit
Remote controller
(option)
Remote controller
(option)
Remote controller
(option)
Fig. 40
L N
F2
N
IN/D OUT/D
F1
F1
L
F2
N
L
P1 P2
P1 P2 F1 F2 T1 T2
L N
L N
L N
P1 P2
P1 P2 F1 F2 T1 T2
P1 P2
P1 P2 F1 F2 T1 T2
Outdoor unit
Indoor
unit A
Indoor
unit B
Most
downstream
indoor unit
For use with
2 remote controllers
Fig. 41
Remote
controller
Remote
controller
(option)
Remote
controller
(option)
Case of group
control
Power supply
220-240V/
220·230V
~
50Hz/60Hz
Note) It is not needed to set the indoor
unit address when using group
control. (It is automatically set
when the power is turned on.)
L N
P1P2
N
L
N
L
F2
F1
F2
F1
N
L
IN/D OUT/D
P1P2 F1 F2 T1 T2
P1P2
P1P2 F1 F2 T1 T2
P1P2
P1P2 F1 F2 T1 T2
Outdoor unit
BS unit
L
N
Indoor unit A
Remote controller
(option)
F2
F1
F2
F1
F2
F1
F2
F1
IN/D
IN/D
OUT/D
OUT/D
N
L
Fig. 42
Power supply
220-240V/
220·230V
~
50Hz/60Hz
P1P2F1 F2 T1 T2
P1P2
01_EN_3P177351-7S.fm Page 16 Thursday, March 21, 2013 10:19 PM