6. SYSTEM DESIGN
POWER SUPPLY CABLE WIRING
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Caution
Except for EMERGENCY, never turn off main as well as sub breaker of the indoor units during îž”
operation. It will cause compressor failure as well as water leakage.
First, stop the indoor unit by operating the control unit or external input device and then cut the îž”
breaker.
Make sure to operate through the control unit or external input device.îž”
When the breaker is designed, locate it at a place where the users cannot start and stop in an îž”
ordinary manner.
Regulation of wire size and circuit breaker differs from each locality, please refer to and be in îž”
accordance with local rules.
Example 1 (Outdoor unit)
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Outdoor unit
Power supply
1ø 230V 50Hz
Earth leakage breaker
Outdoor unit
Circuit breaker (over current)
Example 2 (Branch box & indoor unit)
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Earth leakage
breaker
Branch box
Indoor units
Branch box
Branch box
Earth leakage
breaker
Earth leakage
breaker
Circuit breaker
(over current)
Circuit breaker
(over current)
Circuit breaker
(over current)
Branch box - Indoor unit
Power supply
1ø 230V 50Hz
Branch box - Indoor unit
Power supply
1ø 230V 50Hz
Branch box - Indoor unit
Power supply
1ø 230V 50Hz
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SYSTEM
DESIGN
SYSTEM
DESIGN
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