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251
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(5) Electrical wiring work
Electrical installation work must be performed by an electrical installation service provider qualified by a power provider of the
country.
Electrical installation work must be executed according to the technical standards and other regulations applicable to electrical
installations in the country.
Please install an earth leakage breaker without fail. The installation of an earth leakage breaker is compulsory in
order to prevent electric shocks or fire accidents.
(Since this unit employs inverter control, please use an impulse withstanding type to prevent an earth leakage breaker’s
false actuation.)
Please note
a) Use only copper wires.
Do not use any supply cord lighter than one specified in parentheses for each type below.
- braided cord (code designation 60245 IEC 51), if allowed in the relevant part 2;
- ordinary tough rubber sheathed cord (code designation 60245 IEC 53);
- flat twin tinsel cord (code designation 60227 IEC 41)
- ordinary polyvinyl chloride sheathed cord (code designation 60227 IEC 53).
Please do not use anything lighter than polychloroprene sheathed flexible cord (cord designation 60245 IEC57) for
supply cords of parts of appliances for outdoor use.
b) Use separate power supplies for the indoor and outdoor units.
c) The power supplies for indoor units in the same system should turn on and off simultaneously.
d) Ground the unit. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod or telephone grounding wire.
A grounding wire must be connected before connecting the power cable. Provide a grounding wire longer than the power
cable.
If improperly grounded, an electric shock or malfunction may result.
e) The installation of an impulse with standing type earth leakage breaker is necessary. A failure to install
an earth leakage breaker can result in an accident such as an electric shock or a fire. Do not turn on the power until the
electrical work is completed. Be sure to turn off the power when servicing.
f) Please do not use a condensive capacitor for power factor improvement under any circumstances. (It does not improve
power factor, while it can cause an abnormal overheat accident)
g) For power supply cables, use conduits.
h) Please do not lay electronic control cables (remote control and signaling lines) and other high current
cables together outside the unit. Laying them together can result in malfunctioning or a failure of the unit due to
electric noises.
i) Power cables and signaling lines must always be connected to the terminal block and secured by cable fastening clamps
provided in the unit.
j) Fasten cables so that they may not touch the piping, etc.
k) When cables are connected, please make sure that all electrical components within the electrical
component box are not free or not loose on the terminal connection and then attach the cover securely.
(Improper cover attachment can result in malfunctioning or a failure of the unit, if water penetrates into the box.)
Wiring system diagrams (The example of combination)
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