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Automatic water feeder & ideal water level
Good Morning! I noticed that with sudden drops in temperature or when the thermostat setting is increased, the gremlins in my steam system come to visit. A chain of events spawned the latest visit ended in large amounts of steam erupting from one of my main vents ( this occurred right before the thermostat told the told to shut off.) Last night I noticed that one of the cheap big box radiator vents was continuously releasing air. The radiator is one of two large radiators. I replaced the vent with a varivalve opened all the way, until the Gorton valves I ordered come in. That stopped the continuous air release and everything seem to run “smoothly.” At 3 am, I awoke to a sound I couldn’t identify at first but know it had something to do with the steam system. By the time i reached the basement, the noise had stopped. I checked the water level sight glass to see the water a half inch from the top and noticed the automatic water feeder registered it filled 2 gallons to the boiler. I drained the water to bring the level to slightly under half. I generally have the water level around 1/3 to 2/5 full but I left it slightly higher the usual for fear another boiler run would trigger the feeder and I would be awoken again (entirely selfish move on my part.) Luckily, I slept until the alarm went off and heard no noises while I anxiously drank my first cup of coffee. Only when it was time to bring my daughter to school, did the next gremlin appear. My daughter and I both heard it and I went down to the basement to see the one of the main vents ( I have 2 - Gorton no. 2 ) releasing large amounts of steam. Within less then a minute the the boiler shut off ( I believe that came from the thermostat reaching its set temperature.)
I realize there are a lot of variables and a lot that also is missing, but my question is .... can water level by itself cause steam to erupt from the main vents? Is there an ideal level to maintain (in the sight glass?) I am not looking to open the inevitable can of worms, just hoping to tweak the system I have that seem to run well enough for me.
Thank you for you time and expertise