LG MULTI F Series Engineering Manual page 389

F
MULTI
F
MULTI MAX
Figure 102: Multi F MAX LMU540HV System Power Wiring and Communications Cable.
1(L1)
Indoor Unit Terminal Block
• 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.
Power Wiring (208-230V) and Communications Cable Details
L N
Power Supply
Main Switch
L
Circuit Breaker
Three-wire Power Wiring Fuse
(Including Ground)
Branch Distribution Unit (A)
1(L1) 2(L2) S
1(L1) 2(L2) S 1(L1) 2(L2) S 1(L1) 2(L2)
2(L2) 3 1(L1) 2(L2)
Indoor Unit Terminal Block
POWER WIRING
COMMUNICATIONS CABLE
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.
WIRING CONNECTIONS
Outdoor unit
Outdoor Unit Terminal Block
N
G
L1 L2
1(L1) 2(L2)
S 1(L1) 2(L2) S
3 1(L1) 2(L2)
Indoor Unit Terminal Block
1( L1 ) 2 (L2 ) 3 (A ) 1( L1 ) 2 (L2 ) 3 (B)
Branch Distribution Unit (B)
S
* Same Wiring as Branch Distribution Unit (A)
3 1(L1) 2(L2) 3
Indoor Unit Terminal Block
WIRING CONNECTIONS | 389