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32
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 affected 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.(
figure below) If communication cable of different systems are wired
with the same multiplecore cable, the resultant poor transmitting and
receiving will cause erroneous operations. (
below)
- Only the communication cable specified should be connected to the
terminal block for Outdoor Unit communication.
Outdoor unit
Outdoor unit
2-Core Shield Cable
mark in the
mark in the figure
Indoor
Indoor
Unit
Unit
Remote
Remote
control
control
Indoor
Indoor
Unit
Unit
Remote
Remote
control
control
Outdoor unit
Indoor
Outdoor unit
Indoor
Multi-Core Cable
Outdoor unit
Master
Slave1
Slave2
Outdoor unit
Master
Slave1
Slave2
2-Core Shield Cable
Outdoor unit
Master
Slave1
Slave2
Outdoor unit
Master
Slave1
Slave2
Multi-Core Cable
CAUTION
!
• Use the 2-core shield cables for communication cables. Never
use them together with power cables.
• The conductive shielding layer of cable should be grounded to
the metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase
leading capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating. Therefore, never install a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than
2 %. If it is greater the units lifespan will be reduced.
Indoor
Unit
Unit
Remote
Remote
control
control
Indoor
Unit
Unit
Remote
Remote
control
control
Indoor
Indoor
Unit
Unit
Remote
Remote
controller
controller
Indoor
Indoor
Unit
Unit
Remote
Remote
controller
controller
Indoor
Indoor
Unit
Unit
Remote
Remote
controller
controller
Indoor
Indoor
Unit
Unit
Remote
Remote
controller
controller
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