CEILING-CONCEALED
B-72
INST
ALLA
TION PROCEDURE
S series
CEILING-
CONCEALED
For installation in the switch box:
For direct installation on the wall select one of the following:
• Prepare a hole through the wall to pass the remote controller cord (in order to run the remote controller cord from
the back), then seal the hole with putty.
• Run the remote controller cord through the cut-out upper case, then seal the cut-out notch with putty similarly as
above.
Wall
Conduit
Lock nut
Bushing
Switch box
Remote controller cord
Seal with putty
B-1.
B-2.
[Fig. 8-4]
8.3
[Fig. 8-3]
Indoor terminal block
Earth wire (green/yellow)
Indoor/outdoor unit connecting wire 3-
core 1.5 mm
2
or more
Outdoor terminal block
Power supply cord : 2.0 mm
2
or more
Indoor controller board
Connecting cable
Cable 3-core 1.5 mm
2
, in conformity
with Design 60245 IEC 57.
Indoor terminal block
CN90
L N
Indoor terminal block
Indoor/outdoor unit
connecting wire
3-core 1.5 mm
2
or
more
Outdoor terminal block
Earth wire (green/yellow)
Power supply cord : 2.0 mm
2
or more
Outdoor terminal block
Always install an earth wire (1-core 1.5
mm
2
) longer than other cables
Signal receiving unit cable (accessory)
(wire length : 5 m)
Signal receiving unit
Power supply cord
Cable 3-core 2.0 mm
2
or more, in con-
formity with Design 60245 IEC 57.
Indoor controller
board
8
8.2
J41
J42
JP1
JP2
JP3
CN90
CN4F
CN44
CN20(Red)
CNMF
SW1
SW2
CN32
CN41
CN51
ON OFF
SWE
CN2L
CN22(Blue)
CNP
(Blue)
CN3C(Blue)
CN01
(Black)
CN90: Connector for remote controller wire connection
Controller circuit board on the indoor unit (reference)
IC
OC(00)
CN90
TB1
TB4
Standard 1:1
[Fig. 8-5]
[Fig. 8-6]
IC
IC
IC
IC
CN90
CN90
CN90
CN90
Pair number: 0
[Fig. 8-7]
IC
CN90
IC
CN90
IC
IC
IC
IC
CN90
CN90
CN90
CN90
[Fig. 8-9]
[Fig. 8-8]
Pair number: 0
Pair number: 1
Pair number: 2
Pair number: 3
Pair number: 0
Pair number: 1
Pair number: 2
Pair number: 3
Pair number: 0
Pair number: 0
Pair number: 0
Pair number: 0
Pair number: 0
Pair number: 0
Pair number: 0
Outdoor unit
Refrigerant address
Indoor unit
Signal receiving unit
Indoor/outdoor wiring
Signal receiving unit wiring