LG ARNU363SVA4 Engineering Manual page 74

APPLICATION GUIDELINES
Power Wiring and Communications Cable Connections
1. Insert the power wiring / communications cable from the outdoor unit or heat recovery unit (Heat Recovery systems only) through the
access hole of the indoor unit (ground wire should be longer than the other wires / cables) and to the control board using the designated
path. If a control board cover is present, deattach it.
2. Connect each wire to its appropriate terminal on the indoor unit control board. Verify that the color and terminal numbers from the outdoor
unit or heat recovery unit (Heat Recovery systems only) wiring match the color and terminal numbers on the indoor unit.
3. Secure the power wiring / communications cable to the control board. If a control board cover is present, reattach it.
Figure 64: Location of Power Wiring / Communications Cable Terminals
in SF Frame Gallery Indoor Units.
Control Board Cover
Lock nut
(field supplied)
Conduit
(field supplied)
Figure 66:
Indoor Unit Terminal Block
L(L1) N(L2)
3
Power Input
To Outdoor Unit
208-230V /
60 Hz / 1 Phase Ground
Figure 67:
Indoor Unit Terminal Block
1(L) 2(N)
3(A)
Power Input
208-230V /
To Outdoor Unit
60 Hz / 1 Phase Ground
74 | GUIDELINES
L(L1) N(L2)
L(L1) N(L2)
SODU IDU
4
B A -
SODU IDU
4(B)
B A -
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Figure 65: Location of Power Wiring / Communications Cable Terminals
in SB, SC, SV Frame Wall-Mounted Indoor Units.
Lock nut
Conduit
Conduit
mounting
plate
3(A) 4(B)
1(L) 2(N)
Communication
Power Supply
High Voltage
(208/230V)
Outdoor Unit Terminal Block
INTERNET DRY1 DRY2
- B A - -
Outdoor Unit Terminal Block
INTERNET DRY1 DRY2
- B A - -
Conduit
GND 12V
- -
GND 12V
- -
Lock nut
Conduit
mounting
plate