English 18
8-4 WIRING CONNECTION METHOD
<<Caution for wiring>>
• The indoor units in the same system can be connected to the power supply from one branch switch. How-
ever, selection of branch switch, branch over current circuit breaker and wiring size must be according to
applicable legislation.
• For connection to the terminal block, use ring type crimp style terminals with insulation sleeve or treat the
wiring with insulation.
• If the above is not available, make sure to observe the following items.
• 2 wirings of different sizes to the terminal block for power supply is prohibited.
(Abnormal heating may occur if the wirings are not tightened securely.)
• Use the required wirings, connect them securely and fix these wirings so that external force may not apply
to the terminals.
• Use a proper screw driver for tightening the terminal screws. If an improper screw driver is used, it may
damage the screw head and a proper tightening cannot be carried out.
• If a terminal is over tightened, it may be damaged. Refer to the table shown below for tightening torque of
terminals.
• Conduct wiring so that the earth lead comes out from the notched part of the cup washer. (Otherwise, earth
lead contact will be insufficient and grounding effect may be lost.)
• Do not carry out soldering finish when stranded wirings are used.
Tightening torque (N·m)
Terminal block for remote controller and transmission wirings 0.88±0.08
Terminal block for power supply 1.47±0.14
Earth terminal 1.69±0.25
Insulation sleeve
Ring type crimp style terminals
Wiring
Connection of 2 wirings
of same size must be
carried out on both sides.
Connection of wirings of
different sizes is
prohibited.
Connection of 2 wirings
on one side is prohibited.
Notched part
Ring type crimp style terminal
Cup washer
01_EN_3P249378-8N.fm Page 18 Saturday, September 29, 2012 3:02 PM
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