10
6. Electrical work
6.1. Outdoor unit (Fig. 6-1, Fig. 6-2, Fig. 6-3)
1
Remove the service panel.
2
Wire the cables referring to the Fig. 6-1, Fig. 6-2 and the Fig. 6-3.
•
Perform wiring as shown in the diagram to the lower left. (Procure the cable locally)
(Fig. 6-2)
Make sure to use cables of the correct polarity only.
A
Connecting cable
B
Indoor terminal block
C
Outdoor terminal block
D
Always install an earth wire longer than other cables.
E
Power supply cord
F
Lead wire
• Connect cable from the indoor unit correctly on the terminal-block.
•
Use the same terminal block and polarity as is used with the indoor unit.
• For aftercare maintenance, give extra length to connecting cable.
• Both end of connecting cable (extension wire) are peeled off. When too long,
or connected by cutting off the middle, peel off power supply cable to the size
given in the figure.
• Be careful not to contact connecting cable with piping.
Caution:
• Use care not to make miswiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
Warning:
• Be sure to attach the service panel of the outdoor unit securely. If it is not
attached correctly, it could result in a fire or an electric shock due to dust,
water, etc.
• Tighten terminal screws securely.
• Wiring should be done so that the power lines are not subject to tension.
Otherwise, heat may be generated or fire may occur.
A
B
C
D
S3
S3
S2
S1
1
S 2
S
L N
2
1
E
B
C
L N
A
E
D
C
Fig. 6-2
Fig. 6-1
A
Indoor unit
B
Outdoor unit
C
Wired main switch (Earth leakage breaker)
D
Earth
E
Remote controller
Indoor terminal block
Earth wire
(green/yellow)
Indoor/outdoor unit
connecting wire 3-core
1.5 mm² or more
Outdoor terminal block
Power supply cord SM71: 2.5 mm² or more
■
SM71
For Power supply
• Make earth wire a little longer than others. (More than 100 mm)
• For future servicing, give extra length to the connecting wires.
• Be sure to attach each screw to its correspondent terminal when securing the
cord and/or the wire to the terminal block.
F
35 mm
15 mm
Fig. 6-3
A
Loosen terminal screw
B
Terminal block
C
Lead wire
B
C
A
Service panel
■
SM71
Remove fixing
screw to open the
service panel.
Be sure to fix
the indoor/
outdoor unit
connecting wire
using this cord
clamp.
VH79A015H01_01En.indd 10
2018/10/22 11:40:18
