Venting Challenge

[BillyReaver]

Hi! I need some advice. I am setting up a new Wood Stove install. The challenge is shallow roof pitch so owner doesn't want anything to go through the roof. There are 2 levels of the house a taller section with a 14' ceiling and the other part w 10' ceiling. the stove is going in the `14 section.

option 1. Ideally would like to go straight up from stove into ceiling support box and then hard turn and go out side wall of 14 ft section over the 10ft section and up from there, but haven't seen anywhere a 90 or close to 90 turn in the ceiling, so i guess that's not done.

option 2. have a long stove pipe on the inside that has to go up but also a fair amount horizontally to clear the rise of the 10ft roof truss and the out through normal wall thimble. but on outside need to kick out to clear the 2ft roof overhang.

is the resistance to 90 turns fear of creosote? I see them a lot on the inside. and i guess a wall thimble has one tee.
thanks!

 

[bholler]

Hi! I need some advice. I am setting up a new Wood Stove install. The challenge is shallow roof pitch so owner doesn't want anything to go through the roof. There are 2 levels of the house a taller section with a 14' ceiling and the other part w 10' ceiling. the stove is going in the `14 section.

option 1. Ideally would like to go straight up from stove into ceiling support box and then hard turn and go out side wall of 14 ft section over the 10ft section and up from there, but haven't seen anywhere a 90 or close to 90 turn in the ceiling, so i guess that's not done.

option 2. have a long stove pipe on the inside that has to go up but also a fair amount horizontally to clear the rise of the 10ft roof truss and the out through normal wall thimble. but on outside need to kick out to clear the 2ft roof overhang.

is the resistance to 90 turns fear of creosote? I see them a lot on the inside. and i guess a wall thimble has one tee.
thanks!

Tell them you need to go straight up trough the roof.

 

[stoveliker]

There are no 90 deg chimney pipe elbows anyway. So once you get through the ceiling box, all. you can do is go up (okay, there are 30 degrees offset jogs, but that's it).

Straight up will make the stove run better anyway, especially with a flue that is only 16 ft or so tall...

 

[BillyReaver]

Tell them you need to go straight up trough the roof.

Well, i appreciate the response, but most people like to have a little explanation when you tell them they need to change their plans

 

[BillyReaver]

There are no 90 deg chimney pipe elbows anyway. So once you get through the ceiling box, all. you can do is go up (okay, there are 30 degrees offset jogs, but that's it).

Straight up will make the stove run better anyway, especially with a flue that is only 16 ft or so tall...

Most out of wall vents i see have a 90 over the stove to go to the thimble and then there is a Tee outside that point the chimney pipe up. Those seem to draw fine. I have a similar set up in a pole barn and it rips. has maybe 18 of height, 6 inside and 12 outside

 

[bholler]

Well, i appreciate the response, but most people like to have a little explanation when you tell them they need to change their plans

The solutions suggested in your post would be almost unserviceable and would seriously compromise draft. There is no reason to complicate what should be a simple through the roof install.

 

[stoveliker]

The reasons are 90s are not possible in chimney pipe.

How tall would this be from stove top to 2-3-10 rule adherent cap?