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Do I need a main vent that opens soon after pressuretrol cuts off burner?
I have a 1-pipe system. And with the help of this board I, was able to replace the two old main vents with 3 Gorton #2s. Thank you! Those Gortons balanced the heat in the house probably for the first time since the house was built. :)
(and yes, I've already heard from this board, looks like my local supply house sold me galvanized fittings even though I asked for cast-iron, and yes, looks like I should have angled the pipes differently to avoid debris from jamming the Gortons. I got that.).
But my issue is that when the pressurtrol shuts off the burner, there is a negative pressure in the mains, and then the radiator vents open and let air in (maybe after 30 to 60 seconds after the burner stops) even though the Gortons are still shut since they don't seem to open up until they are stone cold. So after air has filled the mains via the radiators, the burner will kick back in, and the steam builds up, but the Gortons are still shut, and the only openings to let air out of the system are the anemic little holes on the radiator vents.
So I was thinking maybe I should add another main vent to the contraption pictured below, so there would be 3 vents at this particular location (2 gortons, plus another) -- maybe the third one would be a different make/model that would open up quicker than the Gorrtons so that it would available to expel air after the burner kicks back in?
Or maybe there is another way to solve the problem? Or maybe I don't have a problem?
Any thoughts would be appreciated.