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ELECTRICAL CONNECTIONS
Wiring Connections
Figure 32: Detailed Power / Communications System Schematic.
L
N
Power Supply
Main Switch
Circuit Breaker
Power Wiring
(Including Ground)
• Power wiring and communications cable sizes must comply with applicable federal UL / ETL, state, and local codes.
• Separately wire the high and low voltage lines to avoid damage to the unit.
• Local codes may require field-installed disconnect switches from outdoor unit to indoor unit.
• Use heat-proof electrical wire capable of withstanding temperatures up to 167°F to avoid damage to unit.
• Always use a circuit breaker or time delay fuse when connecting electrical wiring to the unit.
• Firmly connect the wire. Loose wiring may cause unit malfunction, the wires to burnout or the terminal to overheat and catch fire. There is a
risk of equipment malfunction or property damage.
• Use outdoor and waterproof connection cable rated up to 300V for the connection between the indoor and outdoor unit to avoid damage to
the unit.
• Comply with local codes while running wire from the indoor unit to the outdoor unit.
•
Do not allow wire to touch refrigerant tubing, the compressor or any moving parts since it can lead to mechanical failure.
40 | DUCTED
G
L
N
Fuse
©
Outdoor Unit
Terminal Block Outdoor
Terminal Block Outdoor
1(L1) 2(L2)
1(L1) 2(L2) 3
Power
Wiring
1(L1) 2(L2)
Terminal Block Indoor
Indoor Unit
Communication
Cable
3
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