LG Electronics LSU120HXV2 User Manual

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Single Zone Mega and Mega 115V Wall Mounted Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

ELECTRICAL SYSTEM INSTALLATION

Outdoor Unit Electrical Connections

Connecting Outdoor Unit Wiring

• 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 or 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.

Loose, damaged, or cracked wires will cause electric shock, bodily injury

and / or death.

Loose wires can cause the wiring to burn out, damaging the outdoor unit.

3. Confirm that electrical power supply capacity will be sufficient to

run the unit. Verify that a circuit breaker and service disconnect are

installed. See the Electrical table in the Product Data section for

details on electrical requirements.

Per code, install a main indoor breaker, and an outdoor service discon-

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electric shock, explosion, physical injury or death.

4. Confirm that the right gauge size is used for all wiring. Follow all

federal, state, and local codes related to wiring.

5. Guide the power wiring to the outdoor unit, and communications /

connection (power) cable from the outdoor unit to the indoor unit,

through the conduit holes on the outdoor unit or control box cover

(see images at right and on the next page). Install conduits to

protect the wiring and cable.

Air

Conditioner

Main Power Source

Circuit Breaker

Use a circuit breaker

or time delay fuse

Figure 96: Circuit Breaker.

Terminal Block

Piping / Control

Box Cover

Figure 97: Accessing LSU090-120HEV2 and LSU090-120HXV2

Outdoor Unit Wiring Connections (Appearances Will Differ Depending

on Model).

Figure 98: Accessing LSU180-240HEV2

Outdoor Unit Wiring Connections.

Piping Connection

Cover

Control Box

Cover

Terminal Block

Mega LS090-120HEV2 and Mega 115V LS090-120HXV2 indoor units and outdoor

units have similar frames; however, Mega LS090-120HEV2 systems require 208-

230V, 60Hz, 1ph power supply, while LS090-120HXV2 systems require 115V, 60Hz,

1ph power supply. Verify which system is being installed. An incorrect power sup-

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LG LSU120HXV2 Air Condition

User Manual - Page 54