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Jotul F100 QT new install, a little smoke out rear

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by waywardsmile, Jan 3, 2012.

  1. waywardsmile

    waywardsmile New Member

    Joined:
    Aug 18, 2011
    Messages:
    8
    Loc:
    Red Hook, NY
    Just began firing up my Jotul f100 and I'm getting a little bit of smoke coming out of the rear. Here's my chimney setup:

    Rear vent out of stove into a T
    Up 4 ' into a 90 degree elbow into 18" duravent
    into a duravent T and then up 20'.

    outdoor temps are in the 20s.

    It is only a little bit of smoke beginning when I start to close the air intake a little. The space it's heating is a new, well insulated 300 sq foot space. Starts easily, no smoke coming out the door when it is open. Given the way the space is set up it is almost necessary to vent out the rear to allow for clearances.

    The one part of the install I am questioning, especially given where the smoke is coming out, is the installation of the first T. I installed the T with the male (crimped) end facing down and a cap on the bottom. Is this correct, or should this end be facing back instead of down? Or is the male end supposed to be connected directly to the stove, which would also leave the capped end being at the rear of the stove?

    thanks folks.

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  2. waywardsmile

    waywardsmile New Member

    Joined:
    Aug 18, 2011
    Messages:
    8
    Loc:
    Red Hook, NY
    Given the small space on top of the stove I am hoping to vent out the rear and thus have space atop the stove. It is true that I could come straight out the top and connect to the duravent with an elbow and a short run horizontally. The other T is outside the building as there is an apartment above and no place to run a chimney through it.

    This post is in the hope that there might be something I'm missing and that I do have sufficient draft before I go taking the stove apart and adjusting for top vent. I also have a few hours before the stove is cool enough to work with. Any insight on the installation of the first T coming from the rear of the stove?
  3. waywardsmile

    waywardsmile New Member

    Joined:
    Aug 18, 2011
    Messages:
    8
    Loc:
    Red Hook, NY
    Another question that shouldn't need asking:

    In moving the stove recently I removed the top baffle and anything else I could to reduce weight and am uncertain I have it installed correctly.

    -Which way is the baffle oriented? Is the part # facing down or up?

    -Where does the baffle sit on inside the stove? I also had the baffle fall this last fire which I'm sure didn't help my situation.

    Pics would be super if anyone can manage or knows of any online.
  4. waywardsmile

    waywardsmile New Member

    Joined:
    Aug 18, 2011
    Messages:
    8
    Loc:
    Red Hook, NY
    We'll, I got the baffle figured out and went through and took the T coming right out the stove off and draft was not increased. It seems to me the stove is actually drafting well from my little experience. Back to the T out the back.

    Could the smoking be from the glueon a fiberglass gasket or the fiberglass gasket itself setting?
  5. logger

    logger Minister of Fire

    Joined:
    Feb 28, 2009
    Messages:
    687
    Loc:
    Pine Barrens, NJ
    It def sounds like a gasket to me. Even with a not so good draft, the setup should be tight enough to not see smoke. Good luck.
  6. Aubs

    Aubs New Member

    Joined:
    Mar 3, 2013
    Messages:
    2
    I am having the same problem after having taken out my baffle to cut down on weight... I have had my baffle fall down a number of times, could you please tell me which way it is supposed to be oriented? (Part # up or down?) Thank you.
  7. DenverDan

    DenverDan New Member

    Joined:
    Feb 7, 2013
    Messages:
    8
    It doesn't look like you've gotten an answer from anyone. I have an F100 and probably like everybody who owns one, I took out the baffle when I moved it and then had a bear of a time getting it back in. As best I remember, you insert the baffle into the firebox at an angle and gently push one side as far up as it will go into the upper corner and then raise the other side and wiggle and jiggle until it gets past the edge of the side plate of the stove. As far as the proper orientation of the baffle, our stove is running at the moment so I can't check for the part number. But the front edge of baffle curls upward. The rear edge has the rounded 'bell' in the middle that extends down and covers the lower half of the rear exit opening. The baffle rests on the side plates of the stove and there are two tabs that extend down from the edges of the sides of the baffle that need to fit in matching slots on the top of the side plates. If the tabs are not in their respective slots the baffle is not positioned correctly, will not burn as efficiently, and is at risk to fall down. Does this make sense? I hope it helps.

    As for the smoke, I've occasionally noticed wisps of smoke from the back of the stove on cold start-ups with smoky kindling and the firebox door open. All I do is close the door and the smoke disappears. My theory is that with a cold flue and an open door, all of the start-up smoke isn't drawn up the flue (since the flue is also drawing air from the open door) but rather some of the smoke manages to make its way out the secondary air holes in the upper back plate of the firebox and then out the back of the stove where the secondary air usually enters. Once the door is closed, even the weak draw of a cold flue is able to reverse the flow through the secondary air holes and the smoking stops.

    I'm curious how long have you been burning the F100? Do you like it? (This is our first season with the F100 and, despite its small size, we're pleased.)
  8. begreen

    begreen Mooderator Staff Member

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    Three are too many 90 deg. turns in the smoke path. First is the long horiz pipe coming out of the rear exit, then a tee, then a 90, then another tee. Effectively this is reducing the 20' stack down to about 11 ft. and spoiling draft.

    Can you post a picture of the setup? I think there is a simpler way to hook this up that will draft much better. I'd replace the 1st tee and 90 elbow with a 45 coming off the stove, diagonally connected up to another 45 that replaces the 90 elbow.
    PapaDave likes this.
  9. Aubs

    Aubs New Member

    Joined:
    Mar 3, 2013
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    Thank you very much for your help, I've got the baffle in correctly now!! This is also my first season burning with this F100, been burning for a few months now and I am very pleased with it. It is small, so its taken some work to get all the firewood small enough to fit!! But it is very nice, I have considered purchasing another one actually.
  10. BrotherBart

    BrotherBart Hearth.com LLC Mid-Atlantic Division Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    29,140
    Loc:
    Northern Virginia
    The F100 is a nice stove and that baffle can be a challenge. I went down to my basement office one morning expecting the usual stone cold stove. It was warm and when I opened the door I found out why. The baffle had fallen flat on top of the load. <>

    I had taken it out to clean the chimney the day before and blew it putting it back.

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