LG MULTI F Engineering Manual page 220

WIRING CONNECTIONS
Power Wiring (208-230V) and Communications Cable Details
Figure 310:Multi F LMU36CHV System Power Wiring and Communications Cable.
L1 L2
Power Supply
Main Switch
Circuit Breaker
Three-wire Power Wiring
(Including Ground)
1(L1) 2(L2)
Indoor Unit Terminal Block
Unit A
POWER WIRING
COMMUNICATIONS CABLE
• All field-supplied wiring, components, and materials should follow national, state, and local codes and requirements.
• Use only stranded, shielded copper conductor.
• 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.
• Install a main shutoff switch or circuit breaker that interrupts all power sources simultaneously.
• Wiring cable size must comply with applicable national, state, and local codes.
220 | WIRING CONNECTIONS
G
L1
L2
Fuse
3 1(L1) 2(L2)
Indoor Unit Terminal Block
Unit B
Due to our policy of continuous product innovation, some specifications may change without notification.
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Outdoor Unit
Outdoor Unit Terminal Block
G
L1 L2 1(L1) 2(L2) 3(A) 1(L1) 2(L2)
3 1(L1) 2(L2)
Indoor Unit Terminal Block
Unit C
MULTI
MULTI
3(B) 1(L1) 2(L2) 3(C) 1(L1) 2(L2)
3 1(L1) 2(L2)
Indoor Unit Terminal Block
Unit D
F
F
MAX
3(D)
3