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ELECTRICAL WIRING
Caution
- 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 electrical engineers do the 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.
- Install the Outdoor Unit communication cable away from the power source wiring so that it is not af-
fected by electric noise from the power source. (Do not run it through the same conduit.)
- Be sure to provide designated grounding work to Outdoor Unit.
CAUTION
!
Be sure to correct the outdoor unit to earth. Do not connect ground wire to any gas pipe, liquid
pipe, lightening rod or telephone earth line. If earth is incomplete, it may cause an electric shock.
- Give some allowance to wiring for electrical part box of Indoor and Outdoor Units, because the
box is sometimes removed at the time of service work.
- Never connect the main power source to terminal block of communication cable. If connected,
electrical parts will be burnt out.
- Use 2-core shield cable for communication cable.(O mark in the figure below) If communication
cable of different systems are wired with the same multiplecore cable, the resultant poor trans-
mitting and receiving will cause erroneous operations. (
- Only the communication cable specified should be connected to the terminal block for Outdoor
Unit communication.
Outdoor Unit
Outdoor Unit
2-Core Shield Cable
Indoor
Indoor
Unit
Unit
Remote
Remote
control
control
Indoor
Indoor
Unit
Unit
Remote
Remote
control
control
ELECTRICAL WIRING
mark in the figure below)
Outdoor Unit
Indoor
Unit
Outdoor Unit
Indoor
Unit
Multi-Core Cable
55
Indoor
Unit
Remote
Remote
control
control
Indoor
Unit
Remote
Remote
control
control
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