En-12
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table for the terminal screw tightening torques.
(7) Please do not
fi
x 2 power supply cables with 1 screw.
Sleeve
Strip 10 mm
Screw with
special washer
Screw with spe-
cial washer
Ring terminal
Cable
Terminal block
Cable
Ring terminal
Ring
terminal
WARNING
Use ring terminals and tighten the terminal screws to the speci
fi
ed torques, otherwise,
abnormal overheating may be produced and possibly cause heavy damage inside the
unit.
Tightening torque
M4 screw
(Power supply/L, N, GND)
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
6.3.2 Transmission and Remote controller cable
Transmission cable
25 mm
40 mm
Shielded cable (no
fi
lm)
Remote controller cable
20 mm
For 3-wire type
20 mm
For 2-wire type
• Connect remote controller and transmission cables as shown in Fig. A.
Fig. A
Different diameter
Connect to 1 side
Good
PROHIBITED
WARNING
Tighten the terminal screws to the speci
fi
ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
Terminal number
Tightening torque
M3 screw
(Transmission/X1, X2)
(Remote controller/ Y1, Y2, Y3)
0.5 to 0.6 N·m
(5 to 6 kgf·cm)
CAUTION
To peel the
fi
lm from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact, which
will lead to a communication failure.
6.4. Connection of wiring
(1) Remove the cover.
(2) Connect the connection cable.
Cover
Screw
CAUTION
When switching the DIP switch (SW1), be sure to turn off the power supply to the
indoor unit. Otherwise, the PC board of the indoor unit may be damaged.
GND
L, N: Power supply cable
DIP switch
(SW1)
X1, X2: Transmission cable
Remote controller cable
Y1: Red
Y2: White
Y3: Black
Cable clamp
For 2-wire type
For 3-wire type
Connect the remote
controller cable
Y1:Non-poler
Y2:Non-poler
Y3:Do not connect *1
Y1:Red
Y2:White
Y3:Black
Set the DIP switch
(SW1)
2WIRE
(Factory setting)
3WIRE
*1: If you connect the remote controller cable to the terminal
Y3, 2-wire type remote controller does not work.
Cable tie (Medium)
(Accessories)
Avoid covering the air
inlet with the wiring.
Avoid touching the ceiling with the wiring
Ceiling
Power supply
cable
Do not bind the power supply cable and other cables together.
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