In loving memory of Kenis D. Keathley 6/4/81 - 3/27/22 Loving father, husband, brother, friend and firewood hoarder Rest in peace, Dexterday

woodstock IS and chimney

Discussion in 'Modern EPA Stoves and Fireplaces' started by chucker, Sep 8, 2016.

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  1. brenndatomu

    brenndatomu

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    Ok, so a shorter than recommended chimney and its 8"...yeah that would give you draft issues. And then add in wood that is on the wet side, sounds like a frustrating heating season. Sounds like you are on the right track for a better year now though. If you don't want to run that chimney up any higher then dropping a 6" liner in it would help a lot...you'll get increased draft speed and higher chimney temps which will help keep the pipe cleaner too
     
    brenndatomu, Sep 8, 2016
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  2. branchburner

    branchburner

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    I agree with others, way too much for such a stove. A combination of taller chimney, and smaller diameter, plus drier wood and cat engaged shoud yield less than 5-10 CUPS of powder for the winter... as well as yielding more useful heat from less wood.
    I just upgraded from my AS beta to an IS, and looking forward to the first burn!
     
    branchburner, Sep 8, 2016
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  3. Canadian border VT

    Canadian border VT

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    :jaw::bug:

    all last year guessing less than quart! Really worried about your family safety!
     
    Canadian border VT, Sep 9, 2016
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  4. Unhdsm

    Unhdsm

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    Totally agree. Last year that I ran that stove I had a half quart. The cat should be lighting off at 350-400f. If you aren't getting that hot there is a serious issue. Was the chimney clean before you started burning? What did the creosote look like? I'd call that chimney plugged. No wonder you didn't get any draft.
     
    Last edited: Sep 9, 2016
    Unhdsm, Sep 9, 2016
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  5. chucker

    chucker

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    i actually did not measure the effluent scientifically, it could have been 2 or 3 gallons. i had a crisis going on and was focused on more important matters. the chimney had light scale that was cleaned off several times. that was it. it was not nearly plugged. i'm going to put a liner in the chimney and probably lengthen the stack.
     
    chucker, Sep 9, 2016
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  6. Backwoods Savage

    Backwoods Savage Moderator

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    Yes, people have vented into masonry chimneys and gotten along with it but they were also much higher and this could make the difference. As you've now seen, the volume inside that chimney is way smaller in the 6" which means the smoke and other particles won't tend to sit still in the chimney or should I say go out slower and therefore cool much quicker. The 6" will tend to draw much better and this too will help because when you run the catalyst, that is upsetting the flow of air (or making it slow down) so add in all the factors and you can get problems which, as you have found out, can also add to the creosote problem.

    Before we installed our Fireview we used to clean our chimney many times during each winter. With the Fireview we could easily go 3 years without cleaning. What a joy! Especially the first time you clean the chimney after a full season and get just enough fly ash or soot to cover the bottom of a bucket rather than getting enough to measure.
     
    Backwoods Savage, Sep 9, 2016
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  7. chucker

    chucker

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    dennis

    this is a good place to go to get schooled. from reading the info on the website i figured 8" pipe should work acceptably which is apparently not so at all. what with the newer stoves people are very happy with the fireview which says something about WS. i am looking forward to not cleaning the chimney. it's an easy thing to do, once a year, in the summer when the stove isn't being used.
    i don't easily conceptualize air moving in the chimney and why the 6" size will draw better. what does make sense though is that there will be a temperature loss as the heat tries to raise the temperature on a excessive volume of air, and as it loses heat it will not rise as well. the hotter the air is, the faster it will rise. interesting stuff.
     
    chucker, Sep 9, 2016
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  8. Backwoods Savage

    Backwoods Savage Moderator

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    The easiest way to visualize the flow up that chimney is to picture water moving in a creek. Notice what happens if the width of the creek gets pinched. Naturally, the same amount of water has to get through and the only way is to speed up. This is the same thing that happens in 6" vs 8" chimney. The air will move up the 6" must faster than in the 8". Therefore, it does not have as much time to cool and therefore, any bad stuff gets out of the chimney before it has time to cool and form creosote. Now couple that with an extremely clean burning stove like the Ideal Steel and the Fireview and others. The stuff going up the chimney is much cleaner and with good air flow, no accumulation of creosote. About the only place you might see any problem is right at the very top or in the cap itself. The rest of the chimney should stay nice and clean. Good luck.
     
    Backwoods Savage, Sep 10, 2016
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  9. chucker

    chucker

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    i will say something about the IS. we have all burned wood in different stoves as well as in fire pits. the internal ducting of the IS is far different from the vermont castings defiant and jotul 500 i had, and frankly every other stove i have used. it is a carefully controlled air stream and more like a soft exhale than the usual whoosh. if you take that carefully controlled, lower volume air stream and try to heat an overly large volume of air, forget it.
    thanks for the additional explanation, dennis.
     
    chucker, Sep 10, 2016
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