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Change in flue design leading to smoking stove?

 
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A few years ago i installed a wood stove in my moms house and it worked great. This year we needed to replace the pipe outside the house so my mothers friend used a steel pipe anchored in the ground and attached it to the exsisting pipe except he added two more elbows as you will see in the pics. Now the stove smokes and she cannot get a strong fire lit. Do you think this new design is the issue?

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pollinator
Posts: 4154
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
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Yes! Big AL
 
Posts: 226
Location: South central Illinois, USA
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For my 2 cents, that setup is at least borderline dangerous. Read up on flues and chimneys online. Your chimney really ought to be in the center of the building, not an edge.
 
gardener
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Location: Upstate NY, zone 5
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For the question of exactly what part(s) of the new design are causing the issues, we need more info. Is the big pipe open to the active chimney? Is it open on the bottom ?

If the big pipe is open all the way up, you are getting no draft at all to help the fire - any heat just pulls air up the big pipe. The extra elbows are also adding drag to the flue, reducing the draft. You really need to cut down the big pipe so the flue can come straight out of the wall and up, and isolate the big pipe from the actual chimney. I am assuming that the original chimney had the correct height above the rooftop for safe operation; codes vary, but 4' above the highest roof within 10' is one standard.

Chimneys do work best if in the middle of the house, but that is not the worst problem here. The assembly looks a bit slipshod and I would be concerned about connections failing in a few years.
 
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