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ELECTRICAL
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• Be sure that main power to the unit is completely off before proceeding. Follow all safety and warning information outlined at the beginning
• Install a main shutoff switch or circuit breaker that interrupts all power sources simultaneously (circuit breaker must be resistant to elec-
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NOTE
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direct current. Using an oversized breaker or fuse will result in equipment malfunction and property damage.
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system. Failure to properly provide a NEC-approved earth ground can result in property damage and equipment malfunction.
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Do not operate the air conditioning system until the refrigerant piping installation is complete. Operating the system before refrigerant
piping is finalized will damage the compressor.
Connections
1. Detach the outdoor unit panel by loosening the screws.
2. Remove the control cover (if applicable) by loosening the
screws.
Figure 71: Power Wiring and Communication / Connection (Power)
Cable Paths (LMU183, 243HV, 303, 363HV) (Appearances Will Vary).
Conduit
Hole
60
Power Wiring
Power
Communication /
Connection (Power) Cable
(To Indoor Units)
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.
3. When all connections are complete, re-attach the cover control to
its original position using the screws, then re-attach the outdoor
unit panel.
Figure 72: Location of the Power Wiring and Communication Cable
Terminals LMU481-541-601HV).
* Verify the rubber
bushings are properly
used in the acess
holes.
.
F
MULTI
F
MULTI
MAX
-
Communication / Connection
(Power) Cable Terminal (To
Indoor Units / Branch Distribution
Units)
Power Wiring Terminal
Wiring / Cable
Clamps
Wiring / Cable
Clamps
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