I have a Burnham P-204A-WNI boiler that has an external power vent. I had an issue with the ignition control board a couple of weeks ago, and had a repairman come in and replace the board. Since they came, the power vent is always running when any of the thermostats with 3 zones calls for heat, rather than when the burner is firing. It looks like they wired the aquastat to the Draft detection switches which runs the ignition control board, and the Power vent (Red, White, Green Wires) are just connected to the 24 VAC transformer on the left side of the boiler. Can someone let me know if theres a way to re-wire this so that the power vent runs only when the burner is firing and not all the time?![]()
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