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No pressure from Steam Boiler compared to last year.
Thanks in advance for any ideas you might have. When I started my boiler this season, I noticed that there wasn't the same amount of pressure I saw the previous year. The radiators still get heat though.
Weil Mclein Type EG-40 (125,000 BTU/HR), few years old.
2 Stage Gas Valve & Vaporstat.
Drop header (2 vertical pipes from the boiler too).
I have a 0 to 35oz/in^2 gauge and the lower flow rate stage would kick in when the boiler reached about 9 Oz and would then run about 5 Oz until the burner cycled off. This year I am reading 0 oz on the gauge continuously. Reasons why I believe the gauge is accurate: No noise coming from my gorton No. 2 vent and it breathed/whistled last year and closed. I don't feel any air coming from the Gorton no 2 like I did last year either. I opened the safety release valve and no steam comes out.
I don't see the water level drop much over the course of a week. Perhaps an1/8" of an inch.
Things I have done so far.
Cleaned the boiler out.
Removed the gorton no 2, and determined that it is open. (blew into it)
Removed the other main vent (Barnes .... stainless steel shell) and boiled in vinegar for 15 mins. This opens and closes with the temperature change of the vinegar and rinsing water).
Removed the gauge and blew into it and I can see the needle rise. (Drained the piping system to the gauge, vaporstat).
Clocked the Gas flow and it was roughly 125,000 btu/hr.
Filled the boiler above the top of the boiler and waited 15 mins. No water leaked from the boiler.
Looked outside on cold day and did not see any water vapor coming from chimney.
I see tall blue flames coming from all of the burners.
I went around to all of the supply valves and do not see any water coming from them.
No changes to insulation from last year.
I am not sure if this helps but I had the gas turned off at the boiler and when turned back on it took a few tries for it to start again.
Thanks for your help and any ideas!