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Posted by Dick Hourigan on July 23, 2008 at 19:55:34:
In Reply to: boiler has excess water, keeps refilling posted by Becky on November 09, 2006 at 20:29:55:
: I have an HB Smith BB13 *3 steam boiler/hot water heater combination. It's developed a problem of having too much water, filling up the system into the radiators, even though I haven't added water to it. Occasionally I have had to add water -- about once every week or two -- to keep the level in the glass from dropping too low, but two days ago the system suddenly seemed filled, and I had to empty buckets of water to bring it down to the normal level. It was good for a day, then tonight it overfilled itself again. I don't think the feed valve gasket is bad - it's only a couple of years old and I don't hear any water passing through it. Can you think of any other possible cause? Thanks!
Water is obviously coming in wether you can hear a leak or not. There could be leaking bypass valve. I would use my Infrared Gun on it to determine pipe temperatures hence flow in the make up line. It could of course be an intermittant problem which leaks when you are not there.
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