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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.
ELECTRICAL WIRING
• If power wires are not properly terminated and firmly attached, there is risk of fire, electric shock, and physical injury or death.
•
Never ground the shield of the communications cable to the indoor unit frame or other grounded entities of the building.
• Never apply line voltage power to the communications cable terminal block. If contact is made, the PCBs may be damaged.
• Always include some allowance in the wiring length when terminating. Provide some slack to facilitate removing the electrical panels while
servicing.
Figure 84: Single Zone Outdoor and Indoor Wiring and Com-
munications Cable Diagram
:Copper Wire
Terminate multiple power wires of
the same gauge to both sides.
Do not terminate two wires on
one side.
Do not terminate different gauge
wires to a terminal block.
Ring Terminal
Power Wiring
Connecting the Power Wiring Guidelines
Best practice dictates using ring or spade terminals to terminate power
wiring at the power terminal block (Figure 85).
If ring terminals or spade clips are not available, then:
Do not terminate different gauge wires to the power terminal block. Slack
in the wiring may generate heat and ¿re.
• When terminating wires of the same thickness, follow the instructions
demonstrated in the illustrations below at Figure 86.
• Firmly attach the wire; secure in a way to prevent external forces from
being imparted on the terminal block.
• Use an appropriately sized screwdriver for tightening the terminals.
•
Do not over tighten the connections; overtightening may damage the
terminals.
Figure 85: Close up of a Typical Ring Terminal
Figure 86: Proper and Improper Power Wiring Connections
Power :iring Speci¿cations and Best Practices
6/16” ± 2/16”
13/16”
GN/YL
Power Wiring, Ground
to Outdoor Unit
Power Wiring, Ground,
Communication Cable
From Outdoor Unit
To Indoor Unit
13/16”
GN/YL
GN/YL = (Ground, Yellow)
6/16” ± 2/16”
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