Lennox CBX40UHV Series

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CBX40UHV
ECB40-6 and ECB40-6CB 208/230V Single-Phase Sequence of Operation
1. W1 of the thermostat provides a W1 demand to the AHC. The AHC outputs a 22VDC signal to the K32 relay. K32-1 closes.
2. Assuming the N.C. primary (S15) and secondary (S20) limit switches are closed, electric heat element HE1 is energized.
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