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• All power wiring and communication cable installation must be
performed by authorized service providers working in accordance
with local, state, and National Electrical Code regulations related
to electrical equipment and wiring, and following the instructions in
this manual.
• Undersized wiring may lead to unacceptable voltage at the unit and
may cause unit malfunction and be a fire hazard.
• Properly ground the Single Zone outdoor and indoor unit. Ground
wiring is required to prevent accidental electrical shock during
current leakage.
• Ground wiring must always be installed by a qualified technician.
• Do not connect ground wire to refrigerant, gas, or water piping;
to lightning rods; to telephone ground wiring; or to the building
plumbing system. Failure to properly provide a National Electrical
Code-approved earth ground can result in electric shock, physical
injury or death.
• Install appropriately sized breakers / fuses / overcurrent protection
switches and wiring in accordance with local, state, and National
Electrical Code regulations related to electrical equipment and
wiring, and following the instructions in this manual. Using an over-
sized breaker or fuse may result in electric shock, physical injury or
death.
Power Supply / Power Wiring Specifications
• Single Zone systems operate at 1Ø, 208-230V, 60Hz.
• Power supply, wire type and size should be selected based on National Electrical Code and local codes. Maximum allowable voltage
fluctuation ±10% or nameplate rated value. Refer to Figure 54 for wiring guidelines.
• Properly ground the Single Zone outdoor unit and indoor unit per National Electrical Code and local codes.
• Use only copper wiring that is stranded and shielded with the wires separately insulated.
• Ground wire should be longer than the common power/communication wires.
• Refer to the inside of the Chassis Cover for Circuit and Terminal Block Diagrams for your model unit.
• Always match color codes of each wire and follow wiring diagram.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
ELECTRICAL WIRING
General Information and Safety Guidelines
• Consider ambient conditions (temperature, direct sunlight, inclem-
ent weather, etc.) when selecting, installing, and connecting the
power wiring.
• Properly ground the Single Zone outdoor and indoor unit. Improp-
erly ground wire can cause communication problems from electrical
noise, and motor current leakage. Ground wiring must always be
installed by a qualified technician.
• If the system operates in reversed phase, it may damage the com-
pressors and other components.
• If there is a possibility of reversed phase, phase loss, momentary
blackout, or the power goes on and off while the system is
operating, install a field-supplied phase loss protection circuit.
• Do not connect ground wire to refrigerant, gas, or water piping;
to lightning rods; to telephone ground wiring; or to the building
plumbing system. Failure to properly provide a National Electrical
Code-approved earth ground can result in property damage and
equipment malfunction.
• Install appropriately sized breakers / fuses / overcurrent protection
switches and wiring in accordance with local, state, and National
Electrical Code regulations related to electrical equipment and
wiring, and following the instructions in this manual. Using an
oversized breaker or fuse may result in equipment malfunction and
property damage.
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