Air Purging - Zibro SM 18 113 Installationshandbuch

instal_SM18113.qxd 29-02-2008
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
• Always 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 wires.)
• Check specification of power source.
• Confirm that supplied electrical capacity is sufficient.
• 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 earth leakage circuit breaker.
• 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 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.
• Do not touch the capacitor even if you have disconnected the power for there is still high
voltage power on it, or electric shock hazard may occur. For your safety, you should start
repairing at least 5 minutes after the power is disconnected.
• The power is supplied from the outdoor unit. The indoor units are connected with a signal wire
with the outdoor unit (signal wire not included). Please make sure that the signal wires or
power cords are connected reliably and correctly, or the air conditioner could not run normally.
• Wrong wiring connections may cause some electrical parts to malfunction. A disconnection
device having an air gap contact separation in all active conductors should be incorperated in
the fixed wiring according to the national wiring regulation.

AIR PURGING

ATTENTION
• Excessive torque can break nut depending on installation conditions.
• All refrigerant work and refrigerant piping should comply with the local legislation, standards
and codes and should only be done by qualified and skilled engineers.
Air and moisture that remain in the refrigerant system, e.g. after installation, can cause undesirable effects
or damage as indicated below:
• Pressure in the system rises.
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09:04 Pagina 62
Terminal block of outdoor unit
Cover
Screw
Grounding
Grounding
Wiring
Connective cable of
Connective cable of
indoor unit and
indoor unit and
outdoor unit
outdoor unit
Indoor unit A Indoor unit B Indoor unit C Indoor unit D
Fig. 21
Connective cable of
Connective cable of
indoor unit and
indoor unit and
outdoor unit
outdoor unit