CAUTION
Be sure to put outdoor unit to earth. Do not connect earth line to any gas pipe, water pipe, lightening
rod or telephone earth line. If earth is incomplete, it may cause an electric shock.
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 electric
work deficiency, it may cause an electric shock or fire.
1. Follow ordinance of your governmental organization for technical standard related to electrical equipment,
wiring regulations and guidance of each electric power company.
2. Install the outdoor unit transmission line away from the power source wiring so that it may not affected by
electric noise from the power source. (Do not run it through the same conduit.)
3. Be sure to provide designated grounding work to outdoor unit.
4. Give some allowance to wiring for electrical part box of Indoor, HR unit and outdoor units, because the box is
sometimes 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.(O mark in the figure below) If transmission lines of different sys-
tems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erro-
neous operations. ( mark in the figure below)
7. Only the transmission line specified should be connected to the terminal block for outdoor unit transmission.
2-core shield cable
Multi-core cable
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