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B-ECB29‐2.5, -4, ‐5, -6, 4CB, 5CB, 6CB - 208/230V SINGLE PHASE -
SEQUENCE OF OPERATION
1- When there is a call for heat, W1 of the thermostat ener
gizes the electric heat relay K35 with 24VAC.
2- When K35‐1 closes, the blower is energized on heat
ing speed.
3- Assuming the N.C. primary (S15) and secondary (S20)
limit switches are closed, electric heat element HE1 is en
ergized.
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