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Power Wiring (208-230V) and Communications Cable Details
ELECTRICAL CONNECTIONS
Figure 296:Multi F with LGRED LMU180HHV System Power Wiring and Communications Cable Connections.
Outdoor Unit
L1 L2 3(A)
Outdoor Unit Terminal Block
L1
L1
L2
L2
G
Power Supply
Main Switch
Circuit Breaker
Fuse
Three-wire Power Wiring
(Including Ground)
COMMUNICATION CABLE
POWER WIRING
1(L1) 2(L2)
Indoor Unit Terminal Block
Unit A Unit B
3
1(L1) 2(L2) 3
Indoor Unit Terminal Block
G
1(L1) 2(L2)
G G
3(B)1(L1) 2(L2)
• All field-supplied wiring, components, sizes, and materials must comply with all applicable national, state, and local codes and requirements.
Improper wiring will result in fire, electric shock, physical injury or death.
• Ground wiring is required to prevent accidental electrical shock during current leakage, communication problems from electrical noise, and
motor current leakage. Do not connect the ground line to the pipes. There is a risk of fire, electric shock, explosion, physical injury or
death.
• Install a main shutoff switch or circuit breaker that interrupts all power sources simultaneously. There is a risk of fire, electric shock, explosion,
physical injury or death.
• All field-supplied wiring, components, sizes, and materials must comply with all applicable national, state, and local codes and requirements.
Failure to install proper electrical components can result in property damage and equipment malfunction.
• Ground wiring is required to prevent communication problems from electrical noise, and motor current leakage. Failure to provide proper
ground wiring can result in property damage and equipment malfunction.
• Install a main shutoff switch or circuit breaker that interrupts all power sources simultaneously. Failure to install proper electric components
will result in property damage and equipment malfunction.
• Maintain polarity throughout the communication network. The system will malfunction if not properly wired.
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
236 | WIRING CONNECTIONS
Multi F and Multi F MAX Indoor Unit Engineering Manual
MULTI
F
MAX
MULTI
F
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