LGRED Installation Manual

63
Electrical System Installation
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MULTI
F
MAX
MULTI
F
WITH
Figure 82: Multi F with LGRED LMU240HHV System Power Wiring and Communications Cable Connections.
Outdoor Unit
L1 L2 3(A)
Outdoor Unit Terminal Block
L1
L2
G
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)
GG
3(B)1(L1) 2(L2)
G
3(C)1(L1) 2(L2)
Unit C
1(L1) 2(L2) 3
Indoor Unit Terminal Block
L1 L2
Power Supply
Main Switch
• All field-supplied wiring, components, sizes, and materials must comply with all applicable national, state, and local codes and require-
ments. 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, explo-
sion, physical injury or death.
• All field-supplied wiring, components, sizes, and materials must comply with all applicable national, state, and local codes and require-
ments. 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
can result in property damage and equipment malfunction.
• Maintain polarity throughout the communication network. The system will malfunction if not properly wired.
ELECTRICAL
Installation