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V - WIRING DIAGRAMS AND SEQUENCE OF OPERATION
10ACC OPERATING SEQUENCE
7
1
2
4
6
3
5
NOTE- The thermostat used may be electromechanical or electronic.
NOTE- Transformer in indoor unit supplies power (24 VAC) to the thermostat and outdoor unit controls.
COOLING:
1 - Cooling demand initiates at Y1 in the thermostat.
2 - 24VAC energizes compressor contactor K1.
3 - K1-1 N.O. closes, energizing compressor (B1) and outdoor fan motor (B4).
4 - Compressor (B1) and outdoor fan motor (B4) begin immediate operation.
END OF COOLING DEMAND:
5 - Cooling demand is satisfied. Terminal Y1 is de-energized.
6 - Compressor contactor K1 is de-energized.
7 - K1-1 opens and compressor (B1) and outdoor fan motor (B4) are de-energized and stop immediately.
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