LG LS243HLV Installation Manual page 45

Communication / Connection (Power) Cable Specifications from Outdoor
Unit to Indoor Unit
• For communication / connection (power) wires between the Single
Zone outdoor unit and the indoor unit for lengths up to 130 feet,
use a minimum 18 gauge, four (4) conductor, stranded, shielded
or unshielded wire. If shielded, the wire must be grounded to the
chassis at the outdoor unit only.
• When the communication / connection (power) wires between the
indoor unit and outdoor unit is GREATER THAN 130 feet, use:
• A two (2) conductor wire for power.
• A two (2) conductor wire for communication / ground.
• Separate the power AT LEAST two (2) inches away from the
communication / ground wire.
• All wiring is still minimum 18 gauge, stranded, shielded, or
unshielded as cited above.
• Insulation material as required by local code.
• Firmly attach the cable; provide slack but secure in a way to pre-
vent external forces from being imparted on the terminal block.
• Wiring must be completed without splices.
All power wiring and communication cable installation must be performed
by trained service providers working in accordance with local, state, and
National Electrical Code (NEC) / UL / ETL federal regulations related to
electrical equipment and wiring, and following the manufacturer product
diagrams, requirements, and instructions in this manual. Failure to do so
will lead to electric shock which can cause physical injury or death.
• Always verify the communication cable is connected to a communications terminal on the Single Zone Extended Piping unit.
apply line voltage power to the communication cable connection. If contact is made, the PCBs will be damaged.
• The shield of the communications cable connecting the outdoor unit to the indoor unit must be grounded only to the outdoor unit frame.
• Tie the shield of each cable segment together using a wire nut at the indoor unit. Maintain polarity throughout the communication network.
• Position the incoming power to the outdoor unit away from the power / communications cables from the outdoor unit to the indoor unit.
• Never use a common multiple-core communications cable.
Figure 64: Typical HLV Power / Communication System Diagram For
Wiring Lengths Up to 130 Feet..
ELECTRICAL SYSTEM INSTALLATION
Due to our policy of continuous product innovation, some specifications may change without notification.
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Figure 62: Typical Single Zone Outdoor Unit to Indoor Unit Wiring and
Communications Cable Diagram For Wiring Lengths Up to 130 Feet.
Communication / Connection
(Power), Ground Cable
From Outdoor Unit
To Indoor Unit
GN/YL = (Ground, Yellow)
Figure 63: Single Zone Outdoor Unit to Indoor Unit Wiring and Com-
munications Cable Diagram For Wiring Lengths GREATER THAN 130
Feet.
Two-Conductor
Power Cable
Separate At Least
Two (2) Inches
Two-Conductor
Communication /
Ground Cable
GN/YL = (Ground, Yellow)
Figure 65: HLV Power / Communication System Diagram For Wiring
Lengths GREATER THAN 130 Feet.
Never
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