En-8
WARNING
When using solid core cables, do not use the ring terminal. If you use the solid core
cables with the ring terminal, the ring terminal’s pressure bonding may malfunction
and cause the cables to abnormally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the
fi
gure below 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 speci
fi
ed 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
screwdriver 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 for the terminal screw tightening torques.
(7) Please do not
fi
x 2 power supply cables with 1 screw.
Strip 10 mm
Ring terminal
Screw with
special washer
Ring terminal
Terminal block
Cable
Screw with
special washer
Sleeve
Ring terminal
Cable
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
25 mm
35 mm
Shielded cable (no
fi
lm)
Transmission cable
Remote controller cable
25 mm
25 mm
For 3-wire type
For 2-wire type
• Connect remote controller and transmission cables as shown in Fig. B.
• When the 2 cables are attached.
Fig. B
GOOD
PROHIBITED
Different diameter
Connect to 1 side
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.
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.
]1
6.4. Connection of wiring
(1) Remove the control box cover and install each connection cable.
Loosen the screws.
(2 locations)
Cover box
(2) After wiring is complete, clamp the remote controller cable, transmission cable and
power supply cable with cable tie.
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.
Cable clamp
X1, X2:
Transmission cable
L, N: Power supply cable
*1: If you connect the remote controller cable to the terminal
Y3, 2-wire type remote controller does not work.
Remote controller cable
Y1: Red
Y2: White
Y3: Black
Cable tie (Medium)
(Accessories)
DIP switch
(SW1)
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
9373870111-01_IM.indb Sec1:8
9373870111-01_IM.indb Sec1:8
2012-7-12 14:19:02
2012-7-12 14:19:02
