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How to connect wiring to the terminal
Caution when wiring cable
(1) Use ring terminals with insulating sleeves as shown in the figure to connect to the
terminal block.
(2) Securely clamp the ring terminals to the cables using an appropriate tool so that
the cables do not come loose.
(3) Use the specified cables, connect them securely, and fasten them so that there is
no stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screw-
driver that is too small, otherwise, the screw heads may be damaged and prevent
the screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table below for the terminal screw tightening torques.
Strip 10 mm
Screw with
special washer
Cable
Ring terminal
Terminal block
6.6.3 Connecting the power supply cable
Earth (Ground)
Ring terminal: M8
cable
* Use a ring terminal to connect the electric cables to the power supply terminal board.
6.6.4 Connecting the transmission cable
Shielding the transmission cable
Connect both ends of the shielded
Wind with insulation tape to prevent short circuit
wire of the transmission cable to
the earth (ground) terminal of the
equipment or to the earth (ground)
screw near the terminal.
Be sure to use one side of a
twisted-pair cable when using
Use one side
transmission cable with 2 sets of
of the twisted
twisted-pair cables.
pair cable
8 to 10 mm
40 mm or more
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
Cable clamp
Connect both ends of shielded
wire to earth (Ground).
IN
RB
Cable clip
Cable tie
(accessory)
6.7. External input and external output
6.7.1 Terminal position
Input 5
Input 4
Input 3
CN133
CN135
CN134
(Orange)
(Red)
(White)
Outdoor unit PC board
CAUTION
Do not bundle the cable
CN135
for base heater with other
(Orange)
cables.
CN115
(Example)
(Black)
In case of Outdoor unit
(1) Insert the connector
to CN134 (Red) and
CN135 (Orange) of
control PC board.
(2) Fix it to the wire with
Clamp
the attached cable tie.
6.7.2 External input terminal
• Setting to low noise mode, outdoor unit operation peak control setting, emergency/batch
stop and electricity meter pulse are possible from the outside.
• Except for wattmeter pulse reception (CN135) among external input terminals, only the
primary unit is effective.
Wiring method and specifications
* A twisted pair cable (0.33 mm² (22AWG)) should be used. Maximum length of cable is
150 m.
* Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed
* For each input, pin No. 1 is of positive polarity and pin No. 2 is of ground level.
Input 1
CN131
(Yellow)
P.C.B.
Connected
unit
Input 1
Output 1
Output 2
CN131
CN136
(Yellow)
(Black)
CN134
(Red)
Cable tie
(accessory)
* Do not clamp the
Wire
base heater cable.
Input 3
Input 4
Input 5
CN133
CN135
CN134
(White)
(Orange)
(Red)
Connected
Connected
Connected
unit
unit
unit
En-14
Clamp
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