I've been having what I still think are some overdraft issues with a quadrafire 4300 wood burning stove and I've decided to at least give installing a damper a try (those details are here: https://www.hearth.com/talk/threads/should-i-install-a-damper.189015/#post-2543084). I figure I can always remove the damper, or just keep it open.
The stove has a 6 inch flue, but in my case it immediately increases in diameter to 7 inches. The attached picture shows this. A few questions
1) Should I continue with a 6 inch flue, rather than having it immediately increase to a larger diameter, and install a 6 inch diameter flue, or should I keep it as is and install a 7 inch diameter damper?
2) If I should change it up to have the 6 inch flue continue, how far should I go? A response in my previous thread, suggested that it might be better to run a 6 inch diameter all the way to the ceiling where it becomes double walled. Financially, I don't want to consider replacing the double wall with 6 inches as well, so at this point I'd only consider running the 6 inch up to the ceiling of the 1st story. My understanding is that an increase in a diameter can contribute to the draft. Would running the 6 inch higher and having the transition be further up the flue help alleviate any increase in drafting from the diameter change?
Any advice would be welcome. Thank you!
![[Hearth.com] Placement of damper with wood stove flue which increases in diameter? [Hearth.com] Placement of damper with wood stove flue which increases in diameter?](https://www.hearth.com/talk/data/attachments/285/285972-f48c0cc46c954c977b85b65b502560f2.jpg?hash=OCShi4byPY)
The stove has a 6 inch flue, but in my case it immediately increases in diameter to 7 inches. The attached picture shows this. A few questions
1) Should I continue with a 6 inch flue, rather than having it immediately increase to a larger diameter, and install a 6 inch diameter flue, or should I keep it as is and install a 7 inch diameter damper?
2) If I should change it up to have the 6 inch flue continue, how far should I go? A response in my previous thread, suggested that it might be better to run a 6 inch diameter all the way to the ceiling where it becomes double walled. Financially, I don't want to consider replacing the double wall with 6 inches as well, so at this point I'd only consider running the 6 inch up to the ceiling of the 1st story. My understanding is that an increase in a diameter can contribute to the draft. Would running the 6 inch higher and having the transition be further up the flue help alleviate any increase in drafting from the diameter change?
Any advice would be welcome. Thank you!
![[Hearth.com] Placement of damper with wood stove flue which increases in diameter? [Hearth.com] Placement of damper with wood stove flue which increases in diameter?](https://www.hearth.com/talk/data/attachments/285/285972-f48c0cc46c954c977b85b65b502560f2.jpg?hash=OCShi4byPY)