Flue Question

[Seasoned Oak]

I have a wood stove that likes a good draft to function properly. IT has a 6" pipe. My chimney is 12" square. Does a larger chimney REDUCE The draft or increase it. How can i mate this stove to this chimney? A chimney inside a chimney possibly? Any ideas? Chimney is about 25Ft high above the stove.

 

[Battenkiller]

I have a wood stove that likes a good draft to function properly. IT has a 6" pipe. My chimney is 12" square. Does a larger chimney REDUCE The draft or increase it. How can i mate this stove to this chimney? A chimney inside a chimney possibly? Any ideas? Chimney is about 25Ft high above the stove.

You need to install a 6" flue liner into the old flue, just like your suspected. Large flues will have much greater flue gas capacity, but will be sluggish and cool with a stove designed for a smaller flue. That will reduce your actual draft by a considerable amount. In your case, it would be totally unsafe to use that flue without a liner. Too much difference in area.

 

[Seasoned Oak]

I have a wood stove that likes a good draft to function properly. IT has a 6" pipe. My chimney is 12" square. Does a larger chimney REDUCE The draft or increase it. How can i mate this stove to this chimney? A chimney inside a chimney possibly? Any ideas? Chimney is about 25Ft high above the stove.

You need to install a 6" flue liner into the old flue, just like your suspected. Large flues will have much greater flue gas capacity, but will be sluggish and cool with a stove designed for a smaller flue. That will reduce your actual draft by a considerable amount. In your case, it would be totally unsafe to use that flue without a liner. Too much difference in area.

Thanks for the fast reply.
Any suggestions how to install a 6" inside a 12" THe 12" has a liner but its still 12" I would think a regular flue pipe would rust out in summer when not in use (black iron or galvanized) ALso i would like to hook up more than 1 stove to this flue so if i could section it some way. All my stoves have a 6" pipe. I already have longwood wood stove with a 6" flue pipe hooked up to this flue and it works fine. but its not a downdraft stove like the harman Tl-300 that i want to use.

 

[Battenkiller]

No, you need a 6" metal flue liner specifically made for the purpose. I don't know that much about the options, so I won't give suggestions, but you'll get a lot more responses if you re-post in the "Hearth Room" forum instead of the "Wood Shed".