Name: Lennox 14ACX
Brand: Lennox
Rating: 5 (1 reviews)

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Page 26

Sequence of Operations

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 from indoor unit (Y1) energizes the TOC timed off control (if used) which energizes contactor K1

(provided S4 high pressure switch is closed).

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.

Figure 14. Use for 13ACX-XXX-230-01 through -10

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Lennox 14ACX Specifications

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