8. Installation
21
MULTI/SINGLE CAC
Indoor unit
ART COOL
8.6 Connecting the cable
1. Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually
according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal
no. are the same as those of the indoor unit.)
The earth wire should be longer than the common wires.
2. When installing, refer to the circuit diagram on the control box of indoor unit.
• When installing, refer to the wiring diagram on the control cover inside outdoor unit.
CAUTION
• The above circuit diagram is subject to change without notice.
• Be sure to connect wires according to the wiring diagram.
• Connect the wires firmly, so that it cannot be pulled out easily.
• Connect the wires according to color codes by referring to the wiring diagram.
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1.
Never fail to have an individual power circuit specifically for the air conditioner. As for the method of
wiring, be guided by the circuit diagram posted on the inside of control cover.
2.
The screw which fasten the wiring in the casing of electrical fittings are liable to become lose due 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 cause burn-out of the wires.)
3.
Confirm the specification of power source.
4.
Confirm that electrical capacity is sufficient.
5.
See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the
name plate.
6.
Confirm that the cable thickness is as specified in the power source specification. (Particularly note the
relation between cable length and thickness.
7.
Never fail to equip a leakage breaker where it is wet and moist area.
8.
The following would be caused by voltage drop.
•
Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of
the normal function of the overload.
9.
The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an
air gap contact separation of at least 3mm in each active(phase) conductors.