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WIRING
Power Wiring / Communication Cable / Terminal Connections
Power Wiring / Communication Cable Connections
Best practice dictates using solderless ring or fork terminals at all power wiring and communication cable terminations. Use copper bearing
ring or fork terminals;
do not use galvanized or nickle plate over steel. Use appropriate crimping tool to attach the ring or fork terminals
at all power wiring and control cable terminations. To install:
• Firmly attach the wire; secure in a way to prevent external forces from being imparted to the
terminal block.
• Use an appropriately sized screwdriver for tightening the terminals.
•
Do not overtighten the connections; overtightening will damage the terminals.
If ring terminals or fork terminals are not available, then:
•
Do not terminate different gauge wires to the power terminal block. (Slack in the wiring
will generate heat.)
• When terminating wires of the same thickness, follow the instructions demonstrated in the figures below.
Figure 28: Proper and Improper Power Wiring Connections.
Terminate multiple power wires of
the same gauge to both sides.
•
Never apply line voltage power to the communications cable terminal block. If contact is made, the PCBs will be damaged.
• Always include some allowance in the wiring length when terminating. Firmly attach the wiring or cable, but provide some slack to facilitate
Terminal Connections
LG uses a "JIS" type of screw for all terminals; use a JIS screwdriver to tighten and
loosen these screws and avoid damaging the terminal.
connections — overtightening will damage the terminals — but firmly and securely at-
tach the wiring in a way to prevent external forces from being imparted to the terminal
block.
• The terminals labeled "GND" are NOT ground terminals. The terminals labeled
ARE ground terminals.
• Polarity matters. Always connect "A" to "A" and "B" to "B."
•
wired in relation to the outdoor unit.
•
Do not include splices or wire nuts in the communication cable.
48
Do not terminate two wires on
one side.
Do not overtighten the
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 Life's Good" is a registered trademark of LG Corp.
Figure 27: Close up of a Typical Ring Terminal.
Ring Terminal
:Copper Wire
Do not terminate different gauge
wires to a terminal block.
Figure 29: JIS Screws.
Wiring / Cable
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