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Combustion testing ???'s

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Yes it helps. I am very interested in the manual that Tim has written. I find it difficult to find quality information on the subject.

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  • John McArthur_2
    John McArthur_2 Member Posts: 157
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    I have read and tried a couple of different methods of combustion testing for atmoshperic gas boilers with rear mounted draft hoods.

    I have used the method detailed by Buderus where you drill a hole 2' above the draft hood and take samples from there and also taken samples from beneath the hood and above the HX.

    Just curious if there is a better way?

  • Empire_2
    Empire_2 Member Posts: 2,343
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    Are u sure they want readings above

    The draft hood? Eff of fuel burn and draft is all established before this hood. Is this "Hood" a barometric damper? One that swings?.....


    Mike T.
  • I have some brand new

    manuals I just finished on this very subject. In particular Testing of Designed Gas Equipment with procedures and illustrations from A to Z.

    I am going to be out of town for a few days but e-mail me and I will get back to you with ordering information when I return.

    To answer the question all that I check after the draft hood is draft, all other combustion testing should be before the draft hood and dilution air mix which changes your readings drastically. It is dificult sometimes to find a good test point on some designed gas equipment because of the built in draft hoods.
  • Empire_2
    Empire_2 Member Posts: 2,343
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    J McArthur

    Tim is one of the for most people that trains most of us on this topic. Please don't be afraid to fire back with ANY further Questions..;-) I to am still learning with 23 yeas under my belt and all the guy's here will help....;-)

    Mike T.
  • keith_20
    keith_20 Member Posts: 11
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    tim, please e-mail information on these new manuals. thamks
  • John McArthur_2
    John McArthur_2 Member Posts: 157
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    Thanks for the replies. I am definately interested in the new manuals.

    The Buderus test procedure I referenced is on page 15 of the I&O manual.

    http://www.buderus.net/Portals/16/Lit-G234X-IOM-01.pdf

    I agree that testing should be of the undiluted gases.
  • Mark Hunt
    Mark Hunt Member Posts: 4,909
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    I check both

    I use the undiluted samples to test combustion and I test AFTER the hood to be sure that combustion products are actually going up and out.

    There is a phenomenon called the "door curtain effect" where the flue gases can actually be blocked by excess air entering the hood. Testing for draft proves something is going up and out, testing for combustion products beyond the draft hood proves that the unit is indeed venting.

    Hope this helps.

    Mark H

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
  • Rodney Summers
    Rodney Summers Member Posts: 748
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    Is it possible to control(lower) the O2% in the hx of a copper tube atmosphere boiler that has a builtin draft diverter.

    thanks for anyones help

    Brendan.
  • Rudy
    Rudy Member Posts: 482
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    jmo

    There has only ever been one way to test an atmospheric piece of equipment - this ain't rocket science. All the info you need is on the www.bacharach-training.com web site....
  • Mark Hunt
    Mark Hunt Member Posts: 4,909
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    Rudy


    When are you going to be in my neck-o-the-woodz???

    Saratoga, NY. Close to Albany.

    Let me know.

    Mark H

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
  • John McArthur_2
    John McArthur_2 Member Posts: 157
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    Thanks Rudy. That is where I got my initial information. I just started doubting myself when I read the Buderus manual.

    That's what I get for reading too much :)
  • Rudy
    Rudy Member Posts: 482
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    Possibly coming soon Mark

    I'll be sure and give you a shout (The Drewers is on me!!)

    rudy
This discussion has been closed.