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Installation
!
CAUTION
Be sure to test the power line and communication line for incorrect wiring before power is
applied.
1) If the power line and communication line are swapped over, the product will be
damaged.
2) Incorrect wiring confirmation test method
: Measure the resistance across the power terminals (L, N) using a multi meter.
- Resistance value of a normal connection: 1 MΩ or more
- Incorrect wiring resistance value: 500 kΩ or less.
!
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have separate power specially for the air conditioner. As for the method of
wiring, follow the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come
loose from vibrations to which the unit is subjected during the course of transportation.
Check them and make sure that they are all tightly fastened. (If they are loose, it could
give rise to burn-out of the wires.)
4) Confirm the Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 % of the rated voltage
marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Do not install the leakage breaker in a place which is wet or moist.
Water or moist may cause short circuit.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking,
disturbance to the normal function of a overload protection device.
• Proper starting power is not given to the compressor.
10) Before applying power to the indoor unit, be sure to check for incorrect wiring of the
power and communication lines.
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual.
(air filter cleaning, temperature control, etc.)
12
Indoor Unit
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