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Multi V S Outdoor Unit
Installation of Outdoor Units
8. Electrical Wiring
8.1 Electrical Wiring
8.1.1 Caution
1. Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring
regulations and guidance of each electric power company.
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.
2. Install the Outdoor Unit communication line away from the power source wiring so that it is 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.
Be sure to correct the outdoor unit to earth. Do not connect earth line to any gas pipe, liquid pipe,
lightening 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 sometimes
removed at the time of service work.
5. Never connect the main power source to terminal block of communication line. If connected, electrical parts will
be burnt out.
6. Use 2-core shield cable for communication line.( mark in the figure below) If communication lines of different
systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause
erroneous operations. ( mark in the figure below)
7. Only the communication line specified should be connected to the terminal block for Outdoor Unit
communication.
• This product have reversed phase protection detector that only works when the power is turned on. If
there exists black out or the power goes on and off which the product is operating, attach a reversed
2-Core Shield Cable Multi-Core Cable
Remote
control
Remote
control
Remote
control
Remote
control
Indoor
Unit
Outdoor Unit
Outdoor Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Indoor
Unit
Indoor
Unit
Outdoor Unit
Outdoor Unit
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