LMCN078HV Engineering Manual

Outdoor Unit
L1 L2 1(L1) 2(L2) 3(A)
3(C)
3(D)
3(B)
Outdoor Unit Terminal Block
L1
L1
L2
L2
G
Power Supply
Main Switch
Circuit Breaker
Fuse
Three-wire Power Wiring
(Including Ground)
COMMUNICATIONS CABLE
POWER WIRING
1(L1) 2(L2)
Indoor Unit Terminal Block
Unit AUnit BUnit CUnit D
3
1(L1) 2(L2) 3 1(L1) 2(L2) 3 1(L1) 2(L2) 3
Indoor Unit Terminal Block Indoor Unit Terminal Block
Indoor Unit Terminal Block
G
1(L1) 2(L2)
2(L2)
1(L1)
2(L2)
1(L1)
Figure 263:Multi F LMU30CHV and LMU36CHV System Power Wiring and Communications Cable.
Power Wiring (208-230V) and Communications Cable Details
ELECTRICAL CONNECTIONS
• All eld-supplied wiring, components, and materials must follow national, state, and local codes and requirements. Electric shock can cause physical
injury or death.
• Use only stranded, shielded or unshielded copper communications / power wiring from the outdoor unit to the indoor units. If shielded, wiring must be
grounded to the chassis at the outdoor unit only. Improper wiring will result in re, 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 cur-
rent leakage. Do not connect the ground line to the pipes. Improper wiring will result in re, electric shock, physical injury or death.
• Install a main shutoff switch or circuit breaker that interrupts all power sources simultaneously. Electric shock can cause physical injury or death.
• Wiring cable size must comply with applicable national, state, and local codes. Improper wiring will result in re, electric shock, physical injury or death.
• For Multi F with LGRED, refer to Multi F & Multi F MAX with LGRED ODU engineering manual.
• 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.
• All eld-supplied wiring, components, and materials must follow national, state, and local codes and requirements. Failure to install proper electrical
components can result in property damage and equipment malfunction.
• Use only stranded, shielded or unshielded copper communications / power wiring from the outdoor unit to the indoor units. If shielded, wiring must be
grounded to the chassis at the outdoor unit only. Failure to install proper 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.
• Wiring cable size must comply with applicable national, state, and local codes. Improper wiring can result in property damage and equipment malfunction.
Due to our policy of continuous product innovation, some specications may change without notication.
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212 | WIRING CONNECTIONS
Multi F and Multi F MAX Indoor Unit Engineering Manual
MULTI
F
MAX
MULTI
F