Engineering Manual

Figure 305:Multi F MAX LMU600HV System Power Wiring and Communications Cable.
Power Wiring (208-230V) and Communications Cable Details
WIRING CONNECTIONS
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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
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• Ground wiring is required to prevent accidental electrical shock during current leakage, communication problems from electrical noise, and motor cur-
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• Install a main shutoff switch or circuit breaker that interrupts all power sources simultaneously. Electric shock can cause physical injury or death.
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• 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.
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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.
1(L1) 2(L2)
1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2)
1(L1) 2(L2)
S
S S S S
1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2)
Indoor Unit Terminal Block
3 3
Outdoor Unit Terminal Block
L
L
N
N
G
Power Supply
Outdoor unit
Main Switch
Circuit Breaker
Three-wire Power Wiring
(Including Ground)
Fuse
* Same Wiring as Branch Distribution Unit (A)
S
Branch Distribution Unit (B)
3 3
COMMUNICATIONS CABLE
POWER WIRING
L1 L2
1(
L1
)2(
L2
)3(A) 3 (B)
Branch Distribution Unit (A)
Indoor Unit Terminal Block Indoor Unit Terminal Block Indoor Unit Terminal Block
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218 | WIRING CONNECTIONS
Multi F and Multi F MAX Indoor Unit Engineering Manual
MULTI
F
MAX
MULTI
F