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Posted by Ted on October 18, 2004 at 13:19:45:
I have a two pipe steam system. The original 74 year old boiler was replaced 4 years ago. The water line has dropped roughly 18" with the new boiler. It seems that since this change occurred, I am getting steam to flow back through the condensate lines. I am also getting pressure buildup within the system causing the burner to short cycle. If I fill the boiler over the sight glass level, I am effectively filling the water seal. This method has allowed for a better distribution of steam, stopped the short cycling and has heated the house better. But do I risk "flooding" the boiler.
What would be the best way to correct the waterline issue - Raise the boiler on a pedestal or drop the water seal. If the latter is preferred, will I need to drop the return back to the boiler below the "new" water seal level?
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