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#1
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Capping off burners on steam boiler to reduce BTU output
A friend of mine has a Weil Mclain gas steam boiler that was put in
about 15 years ago. Apparantly whoever put it in oversized the job and put in a 300,000 BTU unit, when it should have been a 200,000 BTU unit according to a heating specialist that recently surveyed the house. One suggestion he made is that since there are 12 venturi burners under the boiler, is to remove 4 of them and cap the nozzles, thus leaving only 8 burners. He said each burner outputs about 25,000 BTU's, so that should reduce the output. My question is does this make sense? Theoretically it sounds like it does, and from a safety standpoint, as long as the gas outlets are capped, it does not seem unsafe. Any thoughts? |
#2
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Capping off burners on steam boiler to reduce BTU output
"Mikepier" wrote in message ... A friend of mine has a Weil Mclain gas steam boiler that was put in about 15 years ago. Apparantly whoever put it in oversized the job and put in a 300,000 BTU unit, when it should have been a 200,000 BTU unit according to a heating specialist that recently surveyed the house. One suggestion he made is that since there are 12 venturi burners under the boiler, is to remove 4 of them and cap the nozzles, thus leaving only 8 burners. He said each burner outputs about 25,000 BTU's, so that should reduce the output. My question is does this make sense? Theoretically it sounds like it does, and from a safety standpoint, as long as the gas outlets are capped, it does not seem unsafe. Any thoughts? I'm no expert, but it seems to me that the tank size would be proportionate to the burner size. It's a steam boiler. It has to make steam. With fewer burners it would just take longer to generate steam |
#3
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Capping off burners on steam boiler to reduce BTU output
"Mikepier" wrote in message ... A friend of mine has a Weil Mclain gas steam boiler that was put in about 15 years ago. Apparantly whoever put it in oversized the job and put in a 300,000 BTU unit, when it should have been a 200,000 BTU unit according to a heating specialist that recently surveyed the house. One suggestion he made is that since there are 12 venturi burners under the boiler, is to remove 4 of them and cap the nozzles, thus leaving only 8 burners. He said each burner outputs about 25,000 BTU's, so that should reduce the output. My question is does this make sense? Theoretically it sounds like it does, and from a safety standpoint, as long as the gas outlets are capped, it does not seem unsafe. Any thoughts? That would work with a hot water boiler, but I'm not so sure it would help with steam. Once the steam begins to flow in the system, it will rise and heat the radiators. Less burners means more time to go from cold to steam and a slightly less rate to pressure cut off. Some W-M boilers are made in sections. You can remove a section and the burners that go with it for less output. One of my boilers in work is that way, but it is 3,000,000 Btu. More information is needed to give a good answer. You may be better off contacting W-M directly to see what can be done. Take a look at page 3 here to see what I mean by sections http://www.weil-mclain.com/downloads...e/eg/eglit.pdf |
#4
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Capping off burners on steam boiler to reduce BTU output
On Dec 30, 8:30*pm, Mikepier wrote:
A friend of mine has a Weil Mclain gas steam boiler that was put in about 15 years ago. Apparantly whoever put it in oversized the job and put in a 300,000 BTU unit, when it should have been a 200,000 BTU unit according to a heating specialist that recently surveyed the house. One suggestion he made is that since there are 12 venturi burners under the boiler, is to remove 4 of them and cap the nozzles, thus leaving only 8 burners. He said each burner outputs about 25,000 BTU's, so that should reduce the output. My question is does this make sense? Theoretically it sounds like it does, and from a safety standpoint, as long as the gas outlets are capped, it does not seem unsafe. *Any thoughts? The pro that said its oversized and cap of burners is no pro of steam. Steam isnt sized like hot water radiators when replacing. There are alot of good steam repairmen where I am in Chicago as there are steam units everywhere. But there is nobody I have met and seen do other instals that I would trust that they are correct in all aspects. Steam is not simple like hot water to get right, and with it not being used on new installs that I know of there are very few really knowlagable old timers left. My friend just had bids from 4 of the very top chicago area companies on a replacement, sizes went from 3-600000 btu and the company that did it finaly, is a very well respected company. But they didnt do it right and lost near 5000 since a special pump and tank system was needed on his unique problem. Luckily the home owner is extremely educated, he got all the books, he read and knew and researched this before the instal. Even my co that is great on boiler repairs-instals, and that is all they do. I just found they have been over pressuring my system to run less efficiently and still feel correct going to 3 lb vs 14-16oz. There are alot of basics he should learn and do himself, www.heatinghelp.com is a place to get good answers and a few books written by D. Holohan that are well regarded to teach him the basics of getting the most of what he has. If his set up is like mine was-is, the books will teach him to get an efficent well running system. |
#5
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Capping off burners on steam boiler to reduce BTU output
Might work. Or, it might heat the exchanger unevenly, and stress the heat
exchanger. Leading to early breakage. I'd try to get ahold of the manufacturer, and ask their opinion. -- Christopher A. Young Learn more about Jesus www.lds.org .. "Mikepier" wrote in message ... A friend of mine has a Weil Mclain gas steam boiler that was put in about 15 years ago. Apparantly whoever put it in oversized the job and put in a 300,000 BTU unit, when it should have been a 200,000 BTU unit according to a heating specialist that recently surveyed the house. One suggestion he made is that since there are 12 venturi burners under the boiler, is to remove 4 of them and cap the nozzles, thus leaving only 8 burners. He said each burner outputs about 25,000 BTU's, so that should reduce the output. My question is does this make sense? Theoretically it sounds like it does, and from a safety standpoint, as long as the gas outlets are capped, it does not seem unsafe. Any thoughts? |
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