En-10
6.5.2 Wiring procedure
• Remove the service panel. And connect the cable to the terminal in accordance with the
terminal name plate.
• Use a ring terminal to connect the electric cables to the power supply terminal board.
• Keep the earth cable longer than the other cables.
• After connecting the electric cable, secure them with a cable clamp.
• Connect the cable without applying excessive tension.
• Use the specified cable type and connect the cable securely.
Secure with a cable
clamp as shown in the
figure below.
Tightening
torque
M3 screw
0.5 to 0.6 N·m (5 to 6 kgf·cm)
M5 screw
2.0 to 3.0 N·m (20 to 30 kgf·cm)
Power supply terminal
Ring terminal (M5)
Transmission terminal (M3)
Power supply cable
Power supply
cable
Transmission cable
Transmission cable
Push mount
cable tie
(accessory)
Push mount
cable tie
(accessory)
Cable clamp
Cable tie
Earth (ground)
cable
8 to 10 mm
45 to 50 mm
25 to
40 mm
25 to
30 mm
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 3/8 in
(10 mm)
Cable
Screw with
special washer
Ring terminal
Terminal block
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
Shielding the transmission cable
Connect both ends of the shielded
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
transmission cable with 2 sets of
twisted-pair cables.
Wind with insulation tape to prevent short circuit
Use one side
of the twisted-
pair cable
Connect both ends of shielded
wire to earth (Ground).
6.6. External input and external output
6.6.1 Terminal position
CN136 BLK
EXT. OUT. 1
CN137 BLU
EXT. OUT. 2
CN131
YEL
CN132 GRN
CN134 RED
CN133 WHT
CN135
ORG
EXT. IN. 1
PLUSE. IN
EXT. IN. 4
EXT. IN. 2
EXT. IN. 3
CN115 BLK
BASE HEATER
Base heater
(CN115: Black)
Outdoor unit PC board
Input 4
(CN134: Red)
Input 3
(CN133: White)
Input 2
(CN132: Green)
Input 1
(CN131: Yellow)
Input 5 (CN135: Orange)
Output 1 (CN136: Black)
Output 2
(CN137: Blue)
CAUTION
Do not bundle the cable for base heater with other cables.
When connecting
cable to Input 2
Cable (for external
input and output)
Push mount cable tie (accessory)
(tightened with transmission cable)
Push mount cable tie
(accessory) (tightened
with transmission
cable)
Cable (for external input and output)
* If the outdoor unit is not installed in the wall, cover the exposed
part of cable with a 1 mm thick or more insulation tubing.
6.6.2 External input terminal
Setting to low noise mode, cooling priority/heating priority selection, outdoor unit operation
peak control setting, emergency/batch stop and electricity meter pulse are possible from
the outside.
Wiring method and specifications
* A twisted pair cable (22 AWG (0.33 mm²)) 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.
Connected unit Connected unit Connected unit Connected unit Connected unit
Input 1
CN131
(Yellow)
Input 2
CN132
(Green)
Input 3
CN133
(White)
Input 4
CN134
(Red)
Input 5
CN135
(Orange)
P.C.B
9380545200-03_IM.indb 10
9380545200-03_IM.indb 10
4/6/2017 3:20:35 PM
4/6/2017 3:20:35 PM
