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48
Single Zone Mega, Standard Eciency, and Mega 115V Wall Mounted Installation Manual
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 SYSTEM INSTALLATION
Strip to 3/8"
Ring
Terminal
Connecting Cable
Connecting cable
Loosening the
terminal block
screw
Fastening the
wiring tightly
Figure 72: Adding a Ring Terminal to the
Wiring.
To Connect the Wiring to the Terminals:
1. Remove the JIS terminal screws from the (outdoor unit or indoor unit) terminal plate with a
JIS screwdriver. (See information about LG terminal connections below.)
2. Position the ring terminal around the terminal, place the terminal screw in the ring, and
tighten to the terminal plate using a JIS screwdriver.
• Firmly attach the wire; secure in a way to prevent external forces from being imparted to
the terminal block.
• Use an appropriately sized JIS 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.
•
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 removing the electrical panels while
servicing, and to prevent external forces from damaging the terminal block.
: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.
If power wires are not properly terminated and rmly attached, there is risk of re, electric shock,
and physical injury or death.
WARNING
Figure 73: Tightening the Ring Terminal to the
Terminal Plate.
Connections and Specications
Figure 74: 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
attach the wiring in a way to prevent external forces from being imparted to the termi-
nal 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.”
• Do not include splices or wire nuts in the communication cable.
Figure 75: JIS Screws.
Power Wiring / Communication Cable Connections, continued
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