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Electrical Wiring
Areas of Caution
1. Follow ordinance of your governmental organization for technical standard related to electrical equipment,
wiring regulations and guidance of each electric power company.
WARNING
Be sure to have authorized electric engineers do electric work using special circuits in accordance
with regulations and this installation manual. If power supply circuit has a lack of capacity or elec-
tric work deficiency, it may cause an electric shock or fire.
2. Install the Outdoor Unit transmission line away from the power source wiring so that it is not affected by elec-
tric noise from the power source. (Do not run it through the same conduit.)
3. Be sure to provide designated grounding work to Outdoor Unit.
CAUTION
Be sure to put Outdoor Unit to earth. Do not connect earth line to any gas pipe, water pipe, lighten-
ing rod or telephone earth line. If earth is incomplete, it may cause an electric shock.
4. Give some allowance to wiring for electrical part box of Indoor and Outdoor Units, because the box is some-
times removed at the time of service work.
5. Never connect the main power source to terminal block of transmission line. If connected, electrical parts will
be burnt out.
6. Use 2-core shield cable for transmission line.(
systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause
erroneous operations. (
7. Only the transmission line specified should be connected to the terminal block for Outdoor Unit transmission.
Outdoor Unit
Outdoor Unit
2-Core Shield Cable
CAUTION
• Use the 2-core shield cables for transmission lines. Never use them together with power cables.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading capacitor not only will deteriorate power fac-
tor improvement effect, but also may cause capacitor abnormal heating. Therefore, never install a phase lead-
ing capacitor.
• Keep power imbalance within 2% of the supply rating. Large imbalance will shorten the life of the smoothing
capacitor.
mark in the figure below) If transmission lines of different
mark in the figure below)
Indoor
Indoor
Unit
Unit
Remote
Remote
control
control
Indoor
Indoor
Unit
Unit
Remote
Remote
control
control
Outdoor Unit
Indoor
Unit
Outdoor Unit
Indoor
Unit
Multi-Core Cable
Installation Manual 35
Electrical Wiring
Indoor
Unit
Remote
Remote
control
control
Indoor
Unit
Remote
Remote
control
control
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