En-8
Strip 3/8 in.
(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/L1, L2 (N), GND)
11 to 16 lbf·in
(1.2 to 1.8 N·m)
6.3.2. Transmission and Remote controller cable
1 in. (25 mm)
1-3/8 in. (35 mm)
Shielded cable (no
fi
lm)
Transmission cable
Remote controller cable
1 in. (25 mm)
1 in. (25 mm)
For 3-wire type
For 2-wire type
• When the 2 cables are attached:
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)
4.4 to 5.3 lbf·in
(0.5 to 0.6 N·m)
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.
Lock nut
X1, X2:
Transmission cable
Conduit (L1, L2 (N):
Power supply cable)
*1: If you connect the remote controller cable to the terminal
Y3, 2-wire type remote controller does not work.
Y1, Y2, Y3: Remote
controller cable
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
CAUTION
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.
(3) Attach the control box cover.
• Fix the conduit with the supporters as shown below.
Conduit (Power supply cable)
Supporter
Indoor unit
30 in.
(756 mm)
or less
54 in.
(1,361 mm)
or less
54 in.
(1,361 mm)
or less
54 in.
(1,361 mm)
or less
9373870135-03_IM.indb Sec1:8
9373870135-03_IM.indb Sec1:8
10/24/2013 2:57:14 PM
10/24/2013 2:57:14 PM