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ELECTRICAL SYSTEM INSTALLATION
Using a Conduit / Outdoor Unit Electrical Connections
Using a Conduit for Indoor Unit Wiring / Cable Installation
cable.
1. Indoor unit includes a conduit bracket that can be found in the accessory kit. Assemble the conduit and
bracket with a grommet and washer (field-supplied or included with the elbow connector).
2. Guide the power wiring / communication cable into the conduit / bracket assembly..
3. Attach the conduit / bracket assembly to the indoor unit using the screws found in the accessory kit.
Check local, state, and federal codes when choosing a conduit size.
4. To protect the piping, condensate drain, and conduit from the elements, add a lineset cover from the
indoor access hole to the outdoor unit.
cable bundling information.
Connecting Outdoor Unit Wiring
WARNING
• Verify that main power is completely off and that no power is going through the Single Zone system before proceeding with these steps.
Follow all safety and warning information outlined at the beginning of this manual. Failure to do so will cause electric shock, bodily injury
and / or death.
• Per code, install a main indoor breaker, and an outdoor service disconnect that interrupts all power sources simultaneously. There is risk of
fire, electric shock, explosion, physical injury or death.
• Verify that the circuit breaker or some other emergency power cutoff device is in place before any power wiring is done to the system. Fail-
ure to do so will cause electric shock, bodily injury and / or death.
•
Never touch any power lines or live cables before all power is cutoff to the system. To do so will cause bodily injury or death.
1. Using a Phillips head screwdriver, remove the piping / control box
cover, side panel and control box cover (depends on model) from
the outdoor unit.
2. Inspect all wiring inside the chassis to be sure they are secure
and have not loosen during transportation and installation of the
outdoor unit. Inspect wires for damage or cracks.
WARNING
Loose, damaged, or cracked wires will cause electric shock, bodily injury
and / or death.
NOTE
Loose wires can cause the wiring to burn out, damaging the outdoor
unit.
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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.
Figure 69: Circuit Breaker.
Main Power Source
Air
Circuit Breaker
Conditioner
Use a circuit breaker
or time delay fuse
Figure 70: Accessing LUU090-120HV Outdoor Unit Wiring Connections.
Conduit
Cable Clamp
Figure 71: Liquidtight 3/4 Inch
Elbow Connector Attached to
Flexible Conduit.
Communication /
Connection
(Power) Cable
Terminal
Power Wiring Terminal
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