LG ARNU243S8R2 Installation Manual page 52

WIRING
Indoor Unit Power Cable Connections
Connect the indoor unit input power cable but
commissioning agent.
Inappropriate power connection can result in personal injury or death.
Ensure the unit is connected to a dedicated power source that provides adequate power.
injury or death.
Properly tighten all power connections.
Note:
Connect the indoor unit input power cable but
commissioning agent.
Inappropriate power connection can result in equipment damage and will void the LG limited liability warranty.
iar 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 equipment malfunction or property damage and will void the LG limited
liability warranty.
Keep line voltage power away from the communications terminals. Line voltage power applied to the communications terminals will damage the
indoor unit control board and it will have to be replaced. Maintain a minimum of two (2) inches between line voltage wires and communications or
zone controller cables.
Power Wiring Instructions
1. If not already done so, read Connecting Power and Control Wiring on page 48. Provide clean 208/60/1 power to the unit. Maximum ac-
ceptable power fluctuation range is 188 volts to 253 volts.
2. Ensure the input power is disconnected and there is no power on the power input cable.
3. To access the power and communications terminal block on Art Cool Gallery units (SF), remove the control board cover.
4. Access the power and communications terminal blocks on Standard (SB/SC) and Art Cool Mirror (SB/SC/SE/S8) units from the front of the
unit behind the chassis and control board covers.
5. Remove a knock-out plug from the control box.
6. To prevent wire chafing, install a field-supplied plastic or rubber grommet in the hole just created by removing the knock-out plug.
7. If using a conduit, follow industry best practice procedures to connect the conduit to the control box using field-provided lock nuts and
other fittings.
8. Provide enough slack wire at each indoor unit to connect to the terminal block without tension on the wire. Route the wire through the
conduit (if used) and into the control box. Be sure to keep a minimum of two (2) inches of spacing between the power wiring and the com-
munications wiring.
9. Strip approximately half (1/2) of an inch of insulation from each of the power wire conductors. Tightly crimp a spade connector to the Hot,
Neutral and Ground Wires.
10. Connect the power cable to the 1(L or L1) or L(L1) and 2(N or L2) or N (L2) terminal block connections as shown in Figures 49 through
55. Connect the ground wire. Securely tighten the terminal screws with a JIS type screwdriver to prevent the conductors from coming
loose. Secure power wiring to the inside surface of the control box using a field-provided nylon wire clamp. If needed, secure the power
wiring in appropriate locations outside the indoor unit to prevent damage to the wire or injury to maintenance personnel.
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do not apply power to the indoor unit until authorized to do so by the system
do not apply power to the indoor unit until authorized to do so by the system
Do not use the same knock-out as the communications and zone controller cables.
Due to our policy of continuous product innovation, some specifications may change without notification.
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