51
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.
Figure 54: Terminal Block in the Standard (SV Chassis) Wall-Mounted (Gen 4) Indoor Unit
Figure 53: Location of Power Wiring and Communications Cable Terminals in the Art Cool Mirror Wall-Mounted (Gen 2) Indoor Unit
Lock nut
Conduit
mounting
plate
Conduit
Lock nut
Conduit
mounting
plate
Conduit
1(L1) 2(L2)
3(A) 4(B)
Power Supply
High Voltage
(208/230V)
Communication
Indoor Unit Terminal Block
1(L1) 2(L2) 3(A)
AB
SODU
IDU
BA BA- - - -
INTERNET DRY1 DRY2
GND 12V
Outdoor Unit Terminal Block
4(B)
Power Input
208-230V /
60 Hz / 1 Phase
Ground
Indoor Unit Communication Cable / Power Cable Connections
WIRING
Connecting Power and Control Wiring
Indoor unit installation best practices are to connect control wiring (low voltage) and then connect power wiring (high voltage). Do not
apply power to the indoor unit or any Multi V system component until authorized to do so by the system commissioning agent.
DANGER
High voltage electricity is required to operate this system. Adhere to the National Electrical Codes and these instructions
when wiring.
Improper connections and inadequate grounding can cause accidental injury or death.
Always ground the unit following local, state, and National Electrical Codes.
Improper connections and inadequate grounding can cause accidental injury or death.
Properly size all circuit breakers or fuses.
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Read and understand all power-related DANGER and WARNING statements in this manual before working with power cables.
Ensure the power source is disconnected from the indoor unit’s power input cable before connecting the cable.
Improper connections and inadequate grounding can cause accidental injury or death.
The information contained in this manual is intended for use by a trained electrician familiar with applicable local codes and
the U.S. National Electric Code (NEC), and who is equipped with the proper tools and test instruments.
Failure to carefully read and follow all instructions in this manual can result in personal injury or death.
Indoor Unit Terminal Block
L(L1)
Power Input
208-230V /
60 Hz / 1 Phase
AAB ABB
GND 12V
DRY2DRY1
INTERNETIDUSODU
Ground
3(A) 4(B)
N(L2)
Outdoor Unit Terminal Block
To Outdoor Unit
----
Figure 55: Terminal Block in the Art Cool Mirror Wall-Mounted (Gen 2) Indoor Unit
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