Connections And Specifications - LG LS240HEV2 Installation Manual

ELECTRICAL SYSTEM INSTALLATION

Connections and Specifications

Power Wiring / Communication Cable Connections, continued
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.
WARNING
If power wires are not properly terminated and firmly attached, there is risk of fire, electric shock,
and physical injury or death.
• 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.
Figure 74: Proper and Improper Power Wiring Connections.
Terminate multiple power wires of
the same gauge to both sides.
Terminal Connections
LG uses a "JIS" type of screw for all terminals; use a JIS screwdriver to tighten and
loosen these screws and
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.
48
Do not terminate two wires on
one side.
avoid damaging the terminal.
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.
:Copper Wire
Do not terminate different gauge
wires to a terminal block.
Figure 75: JIS Screws.
Do not overtighten
Figure 72: Adding a Ring Terminal to the
Wiring.
Figure 73: Tightening the Ring Terminal to the
Terminal Plate.
Connecting Cable
Loosening the Fastening the
terminal block wiring tightly
screw
Connecting cable
Ring
Terminal