Power Wiring; Power Wiring Instructions - LG Multi V Installation Manual

POWER WIRING

Table 5 lists electrical data. Both the convertible and the ceiling suspended IDUs require clean 208-230 V, 60 Hz, 1-phase power. Maximum
acceptable voltage fluctuation range is 187–253V. Do not use the same power source for the IDU and the ODU.
Keep line voltage power away from the communications terminals 3(A) and 4(B) (Figure 20). Line voltage pow-
er applied to the communications terminals will damage the indoor unit control board, requiring replacement.
Note:
Size all field provided electrical components per National Electric Code (NEC) and local code. Always use copper
wire. Refer to the LG Multi V™ Outdoor Unit Engineering Manual for detailed information.
Unit Model Voltage Range
Number (Vac)
Convertible Surface Mounted Units
ARNU093VEA2 187–253
ARNU123VEA2 187–253
Ceiling Suspended Indoor Units
ARNU183VJA2 187–253
ARNU243VJA2 187–253
• High voltages capable of causing death or severe injury are used in this equipment. Do not touch live cir-
cuits. Ensure power is not applied to input power cable when installing power connections. Use a meter to
verify if power is connected or not. If power is connected, disconnect power before performing this procedure.
Do not work on this equipment alone. Know how to obtain emergency assistance.
• Use the designated wire and firmly attach the connections; secure the wire to prevent strain on the ter-
minal block connections. If connections are not firmly attached, it may generate heat and cause a fire.
• Some sites may require installation of an earth leakage circuit breaker. If an earth leakage circuit breaker
is not installed, it may cause an electric shock, physical injury or death.
• Always install breakers and fuses with the correct capacities. If fuses or copper wires with too large
capacity are installed, it may cause a fire or unit malfunction.
• Do not connect any ground wire to the refrigerant pipes.

Power Wiring Instructions

1. Provide clean 208–230 V, 60 Hz, 1-phase power to the unit. Maximum acceptable voltage fluctuation range is 187–253V. Do not use the
same power source as the outdoor unit. Ensure the power is not connected to the power input cable before performing this procedure.
2. If necessary, remove the front cover (convertible) or side panel (ceiling suspended) for access to the unit's internal control box.
3. Remove the control box cover to access the power and communications terminal block.
4. Remove the clear plastic safety cover from the power and communications terminal block.
5. Remove a knock-out plug from the control box. Do not use the same knock-out occupied by communications and zone controller cables.
6. Field-provide a plastic or rubber grommet in the knock-out hole to prevent wire chaffing.
7. If using conduit, connect the conduit to the control box using field provided fittings and industry best practice procedures.
8. Provide enough slack wire at each indoor unit to connect to the terminal block without tension on the wire. Route the wire inside the
control box paying special attention to keep the wire away from communications cables by a minimum of two inches.
9. Secure the wire to the inside surface of the control box using a field provided nylon wire clamp.
10. Refer to Figure 20 for details of the terminal block wiring. Strip approximately half of an inch of insulation from each of the power wire
conductors. Tightly crimp a spade connector to the Hot, Neutral and Ground Wires. Insert each spade connector under the appropriate
terminal block screw and tighten.
11. Securely tighten the terminal screws to prevent the conductors from coming loose.
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Table 5: Electrical Data.
Rated Amps
Input Power Supply
(A)
0.15 208–230V, 60 Hz, 1-phase
0.15 208–230V, 60 Hz, 1-phase
0.6 208–230V, 60 Hz, 1-phase
0.6 208–230V, 60 Hz, 1-phase
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.
Minimum Circuit Maximum Overcurrent
Ampacity (A) Protection (A)
0.22
0.22
0.43
0.43
15
15
15
15