Quote:
Originally Posted by John Mercier
I thought my flue damper was to prevent blow back when wind forces the draft to reverse.
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The draft regulators purpose is to maintain the correct over fire draft. Some boilers do not require them. They do nothing for downdrafts. My guess is you're hearing the upward draft. Many times you'll see and or hear the regulator bouncing. This should also be checked and adjusted at the time of an annual service.