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Electrical Wiring
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 WIRING
Power :iring Speci¿cations and Best Practices
Communication Cables Between the Single Zone Unit and the Controller
• Simple Controllers: field-provided, 18 gauge, stranded four-conductor communication cable (shielded).
• All other Central Controllers: field-provided, 18 gauge, stranded two-conductor communication cable (shielded).
• Insulation material as recommended by local code.
• Connect all central control devices such as ACP, BACnet
®
and LonWorks
®
gateways, and energy recovery ventilators all on the same cable. Order
does not matter. Polarity does. Keep “A” terminals with “A” terminals, and “B” terminals with “B” terminals.
• Starting at the outdoor unit, terminate the cable on terminals Internet A and Internet B. Route the cable as needed between each device.
• Always verify the communication cable is connected to a communications terminal on the Single Zone unit.
Never apply line voltage
power to the communication cable connection. If contact is made, the PCBs may be damaged.
• The shield of the communications cable connecting the outdoor unit to the indoor unit should 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. Each communications bus shall be provided a separate cable (i.e., between
outdoor unit and indoor unit).
General Communication Cable Specifications
• For power / communication wires between the Single Zone outdoor unit and the indoor unit, use a four (4) conductor, stranded, shielded or
unshielded wire. If shielded, the wire must be grounded to the chassis at the outdoor unit only.
• Minimum 18 gauge CVVS or CPEVS cable.
• Insulation material as required by local code.
• Rated for continuous exposure of temperatures up to 140°F.
• Maximum allowable cable length: 984 feet.
• Firmly attach the cable; provide slack but secure in a way to prevent external forces from being imparted on the terminal block.
• Wiring should be completed without splices.
Controller Options
Refer to Table 34 as to which remote controller models to use for each Single Zone model types. Once all wiring is connected to the indoor
and outdoor units be sure to test the accompanying remote controllers for performance. As always, follow all safety warnings and notes when
operating the Single Zone units using the remote controller.
Single Zone Model Type Remote Controller Model
LS091HSV3, LS121HSV3 AKB73855712
LS181HSV3 AKB73855712
LS240HSV3 AKB73855713
LS307HV3, LS360HV3 AKB73855713
Single Zone Extended Pipe System
LS240HLV, LS300HLV, LS360HLV AKB74055401
Single Zone Mega System (HEV)
LS090HEV, LS120HEV AKB73835305
LS180HEV, LS240HEV AKB73835305
Single Zone Mega System (HEV1)
LS090HEV1, LS120HEV1 AKB73835318
LS180HEV1, LS240HEV1 AKB73835318
Single Zone Mega 115V System
LS090HXV, LS120HXV AKB73456121
Table 34: Single Zone Models and Associated Remote Controller Model
Additionally, most of the Single Zone High Efficiency and Extended
Pipe outdoor models can use the following controllers when accom-
panied with the PI 485 VNet Accessory:
• AC Smart
•ACP
• BACnet
TM
• LonWorks
TM
•LGMV
Mega 115V is compatible with the following controllers:
• PREMTB10U
• PQDSB1
•PZCWR5C1
• LS091HSV3, LS121HSV3 models cannot use PI-485, or the controller accessories.
• Single Zone Mega and Mega 115V systems cannot use PI-485, or the controller accessories mentioned on this page. They can use LGMV.
• BACnet
TM
is a trademark of ASHRAE; LonWorks
TM
is a trademark of Echlelon Corporation.
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