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Boiler banging
Fizz
Member Posts: 547
in Gas Heating
Have friend who has gas boiler hot water heat. Said he's had banging coming from boiler for several years, but service repair guys can't find problem. He said boiler is over 25 yrs old. No issues with heat. Any feedback aprreciated.
Fizz
Fizz
0
Comments
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Hate when those gremlins crawl in a nice boiler....I'm with Jamie..a bit more info...or maybe even a video if it's that constant...0
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Will get more info. thanks.0
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looking for when it starts..is it at the beginning of a call for heat. after it's been running for a while..after it shuts off...is it a thumping sound or a boiling sound? Or huge banging sound? Do you hear it at the boiler or only upstairs? Does it always happen or only once in a while? Some place to start...:)0
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When boiler turns on and continues til heat satisfied. He said boiler is only place it's heard, and sounds like water-based sound. Started about 2 yrs ago.0
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Not sure where your located, but around here in WI, we have very hard water. When we here a banging or rumbling boiler, more times than not it's sediment build up. As the boiler heats the bottom of the sections, it dries out the sediment. When water does find a passage through, it instantly steams, and than is absorbed by the water. That sudden steam is the cause of the rumbling.
So I would check for sediment build up, and maybe do a pressure check to see if there maybe a slow leak in the system.0 -
He lives in NE Pa. Thanks for info I will relay to him.0
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NE PA? If he's on well water, it could well be from scaling, as @hvacplumber7 suggests. Less likely, but also possible on city water.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
He's on city water. Thanks Jamie!0
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What is the make and model of boiler.?0
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I know it's Weil Mc, over 25 yrs old, but will have to get model from him.0
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Something is slowing water flow past the heat exchanger. Debris, mineral accumulation, bad circulator, perhaps a small zone that was added causing limited flow when it's the only one turned on, etc.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab0 -
Ok thanks. Will see him today and give him info.0
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