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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.
LG
Air-Cooled Cooling Only Inverter Scroll Chiller Installation and Owners Manual
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: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.
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Best practice dictates using solderless ring or fork terminals at all power wiring and communi-
cation 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.
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Do not overtighten the connections; overtightening will damage the terminals.
If ring terminals or fork terminals are not available, then:
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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.
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Ring Terminal
Wiring / Cable
Figure 102: Close up of a Typical Ring
Terminal.
Figure 103: Proper and Improper Power Wiring Connections.
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.
Do not overtighten the
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.
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ARE ground terminals.
• Polarity matters. Always connect “A” to “A” and “B” to “B.”
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to the outdoor unit.
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Do not include splices or wire nuts in the communication cable.
Figure 104: JIS Screws.
WARNING
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ELECTRICAL
