Barometric Damper Flapping Continuously

[@MichaelEGordon]

Assuming this is a natural gas boiler, that damper should be able to pivot in both directions to allow for sudden expansion of flue gasses on main flame light off.

[@thegadgetrulez]

Ours pivot both ways but never stop the back and forth and we are getting air flow errors.

[@plutoniumpie]

Fascinating, I could look at this for hours!

[@thegadgetrulez]

We have the same problem with our RBI boilers. Did you ever get it fixed?