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Power supply
single phase 208/230V
Ground
L
wire
2
Ground
terminal
CAUTION
Drain piping connections
Do not connect the drain piping directly to sewage pipes that smell of ammonia. The ammonia in the sew-
age might enter the indoor unit through the drain pipes and corrode the heat exchanger.
8. ELECTRIC WIRING WORK
8-1 General instructions
• All field supplied parts and materials and electric works must conform to local codes.
• Use copper wire only.
• For electric wiring work, refer to also "WIRING DIAGRAM" attached to the unit body.
• For remote controller wiring details, refer to the installation manual attached to the remote controller.
• All wiring must be performed by an authorized electrician.
• A circuit breaker capable of shutting down power supply to the entire system must be installed.
• Refer to the installation manual attached to the outdoor unit for the size of power supply electric wire con-
nected to the outdoor unit, the capacity of the circuit breaker and switch, and wiring instructions.
• Be sure to ground the air conditioner.
• Do not connect the ground wire to gas pipes, plumbing pipes, lightning rods, or telephone ground wires.
• Gas pipes: might cause explosions or fire if gas leaks.
• Plumbing: no grounding effect if hard vinyl piping is used.
• Telephone ground wires or lightning rods: might cause abnormally high electric potential in the ground
during lighting storms.
16
L
1
Control box lid
Power supply
wiring terminal
block
Fig. 24
English
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