Electrical Wiring - LG ARUB80LT2 Installation Manual

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 instal-
lation 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 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.
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.
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 communication line.(O mark in the figure below) If communication lines of different sys-
tems 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.
Outdoor unit
HR
unit
Outdoor unit
HR
unit
2-core shield cable
Outdoor units
Master Slave1 Slave2
Outdoor units
Master Slave1 Slave2
2-core shield cable
Outdoor unit
Indoor Indoor
unit unit
Remote Remote
controller controller
Outdoor unit
Indoor Indoor
unit unit
Remote Remote
controller controller
Indoor Indoor
unit unit
HR
unit
Remote Remote
controller controller
Indoor Indoor
unit unit
HR
unit
Remote Remote
controller controller
HR
unit
HR
unit
Multi-core cable
Outdoor units
Master Slave1 Slave2
Outdoor units
Master Slave1 Slave2
Multi-core cable
Electrical Wiring
Indoor Indoor
unit unit
Remote Remote
controller controller
Indoor Indoor
unit unit
Remote Remote
controller controller
Indoor Indoor
unit unit
HR
unit
Remote Remote
controller controller
Indoor Indoor
unit unit
HR
unit
Remote Remote
controller controller
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