Bit of smoke coming out of air inlet on startup

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by burnt03, Apr 7, 2013.

  1. burnt03

    burnt03
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    Burning Hunk

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    Let the stove go totally cold yesterday, tried a startup this morning and got a bit of smoke coming out of the air inlet at first. Cleared up after a few seconds.

    Last time I swept chimney was Mar 10, haven't been burning full time since then.

    41 outside, 59 in basement where stove is. Did I just have a slug of cold air making it's way down the chimney?
     
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  2. begreen

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    Sounds like it may have been. You may have slightly negative pressure in the basement. Did anyone have an exhaust fan running at the time? Are you getting a lot of wind from this new system coming through?
     
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  3. burnt03

    burnt03
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    Burning Hunk

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    No exhaust fan or wind. Forgot to mention I have an oversized masonry chimney, that can negatively affect the draft at startup too right?
     
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  4. begreen

    begreen
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    Definitely, especially if there is no insulated, stainless liner in it. What's the tile size in the chimney?
     
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  5. burnt03

    burnt03
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    Burning Hunk

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    6 x 10 :(
     
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  6. begreen

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    Could be worse. How tall is the chimney and how frequently are you needing to clean it? Also, is there a cleanout door at the base of the chimney? If yes, is it gasketed for a tight seal?
     
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  7. burnt03

    burnt03
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    Burning Hunk

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    It's around 21' tall, cleanout door at bottom outside is gasketed and have a chunk of roxul stuffed inside too (as per the sweep's advice).

    First year burning so I've been cleaning once a month. Gotten as much as a ice bucket (dec - jan) and as little as a 1/4 ice cream bucket (feb-mar).
     
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  8. begreen

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    Warming up the chimney would help a lot. It could be surrounded with an insulated chase or maybe a 5.5" liner dropped down it.
     
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  9. DexterDay

    DexterDay
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    I only start cold a couple times a year. And when I do (6" Class A running 18 ft up the side of house) I often get a little smoke out the primary.

    I added an OAK this year and cured that problem. It was less than $40 and works like a charm :)
     

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