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• In order to prevent the intrusion of small creatures, seal the wiring outlet with putty or heat insulating
material (field supply). (If small creatures, such as insects, intrude into the unit, the creatures may cause
short-circuiting in the terminal box.)
CAUTION
• Observe the notes mentioned below when wiring to the power supply terminal board.
Precautions to be taken for power supply wiring
(Use a round crimp-style terminal for connection to the power supply terminal board. In case it cannot be
used due to unavoidable reasons, be sure to observe the following instructions.)
•
Do not connect wires of different gauge to the same power supply terminal.
(Looseness in the connection may cause overheating.)
•
When connecting wires of the same gauge, connect them according to the below figure.
•
In wiring, make certain that prescribed wires are used, carry out complete connections, and fix the wires
so that outside forces are not applied to the terminals.
•
Do not tighten the terminal screw excessively, or
otherwise the screw may be damaged.
•
The tightening torque of each terminal screw is shown
in the table on the right-hand side.
9. WIRING EXAMPLE
(For the wiring of outdoor units, refer to the installation manual attached to the outdoor unit.)
Confirm the system type.
• Pair type: 1 control panel controls 1 indoor unit (standard system).
• 2 remote controller control: 1 control panel and 1 remote controller control 1 indoor unit.
• Group control: 1 control panel controls up to 16 indoor units (All indoor units operate according to the
control panel).
Tightening torque (N·m)
Terminal block for remote controller wiring
0.79~0.97
1.18~1.44
1.44~1.94
Terminal block for wiring between units
Earth terminal
Round crimp-style
terminal
Electric wire
GOOD
WRONG
WRONG
Do not connect wires
of different gauges.
(WRONG)
Do not connect wires
of the same gauge to
one side. (WRONG)
Connect wires of the
same gauge to both
side. (GOOD)
1 2 3
1
2
3
1 2 3
1
2
3
P
1
P
2
P
1
P
2
P
1
P
2
P
1
P
2
Pair type
2 remote controller control
Main power supply
Main power supply
Main switch
Main switch
Fuse
Fuse
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
(NOTE 2)
Control
Panel
Control
Panel
01_EN_3PA60136-8Y.fm Page 13 Saturday, December 22, 2007 1:04 PM