Service manual

Connect the cable to the outdoor unit
See fig. 21
1. Remove the electric parts cover from the outdoor unit.
2. Connect the connective cables to the terminals as identified with their respective matched numbers on
the terminal block of indoor and outdoor units.
3
. To prevent the ingress of water, form a loop of the connective cable as illustrated in the installation dia-
gram of indoor and outdoor units.
4. Insulate unused cords (conductors) with PVC-tape. Make sure they do not touch any electrical or metal
parts.
G
CAUTION
After the confir
mation of the above conditions, pr
epare the wiring as follows:
• 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.
• 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 cause burn-out of
the wir
es.)
• Check specification of power source.
•
Confir
m that supplied electrical capacity is suf
ficient.
•
See to that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
• Confirm that the cable thickness is as specified in the power source specification.
•
Always install an ear
th leakage cir
cuit br
eaker
.
• 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.
• The means for disconnection fr
om 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.
4
62
C
over
Screw
Wire connector of outdoor unit
Connective cable
≤ 6.1 kW models
C
ord clamp
Cover
Screw
Wire
connector of outdoor unit
Cable clamp
> 6.1 kW models
Or
O
r
C
ord clamp