En-8
Strip 10 mm
Sleeve
Screw with
special washer
Screw with
special washer
Ring terminal
Cable
Cable
Terminal block
Ring terminal
Ring terminal
WARNING
Use ring terminals and tighten the terminal screws to the specifi 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 1.8N•m (12 to 18 kgf•cm)
6.3.2. Transmission and Remote controller cable
Shielded cable (no fi lm)
For 3-wire type For 2-wire type
30 mm
40 mm
30 mm
30 mm
Transmission cable
Remote controller cable
• Connect remote controller and transmission cables as shown in Fig. C.
Fig. C
GOOD
Different diameter
Connect to 1 side
PROHIBITED
WARNING
Tighten the terminal screws to the specifi 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 wire 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 control box cover and install each connection cable.
Screw
Control box cover
(2) Connect the connection cable, with the 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.
SW1
2WIRE
3WIRE
Cable clamp
L, N:
Power supply cable
Remote controller
cable
Cable tie (Medium)
(Accessories)
X1, X2:
Transmission cable
DIP switch (SW1)
Connect the remote
controller cable
For 2-wire type
Set the DIP switch (SW1)
Y1: Non-polar
Y2: Non-polar
Y3: Do not connect *1
2WIRE (Factory setting)
For 3-wire type
Y1: Red
Y2: White
Y3: Black
3WIRE
*1: If you connect the remote controller cable to the terminal Y3, 2-wire type
remote controller does not work.
(3) Install control box cover.
CAUTION
Do not bundle the remote controller cable, or wire the remote controller cable in
parallel, with the indoor unit connection cable (to the outdoor unit) and the power
supply cable. It may cause erroneous operation.
9371022253-01_IM.indb Sec1:89371022253-01_IM.indb Sec1:8 2012-7-12 14:34:432012-7-12 14:34:43
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