Areas Of Caution; Electrical Wiring - LG MULTI V ARWN80LA2 Product Data

Electrical Wiring

9.

9.1 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.
Be sure to have authorized Electrical 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.
2. Install the outside 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 outside unit.
Be sure to correct the outside 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 and outside units, because the box is some-
times 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
systems are wired with the same multiplecore cable, the resultant poor transmission and receiving will cause
erroneous operations. (
7. Only the transmission line specified should be connected to the terminal block for outside unit transmission.
Outside Unit
2-core shield cable
• Use the 2-core shield cables for transmission lines. 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.
• Keep power imbalance within 2% of the supply rating. Large imbalance will shorten the life of the
smoothing capacitor.
• Introducing with a missing N-phase or with a mistaken N-phase will break the equipment.
Installation
mark in the figure below)
Indoor Indoor
Unit Unit
Remote Remote
control control
Indoor Indoor
Unit Unit
Remote Remote
control control
Outside Unit
Indoor
Unit
Outside Unit
Indoor
Unit
Multi-core cable
Indoor
Unit
Remote Remote
control control
Indoor
Unit
Remote Remote
control control
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