6 Inch Single-wall vent pipe

[gorooster]

Vent Pipe Question for Mount Vernon:

I'm replacing my wood stove with a Mount Vernon. The wood stove was vented w/ 6" single-walled pipe that takes a 45 degree elbow up into a masonry flue and extends about 2 feet above my chimney. Not sure of the exact length, but it's a standard 8' ceiling w/ a 12/8 roof pitch. It's a 50 yr. old, drafty house, up at 7,200' elevation.

My stove dealer is pushing for me to reline w/ 3" stainless steel ($200.00 minimum lengths).

He told me that the stove and adapters are designed to accept double-walled pipe. He's pretty adamant about needing the 3" SS, saying that I could get air pooling on the way up if it doesn't run the entire length.

I haven't figured the EVL (?) just yet, but the old Vermont Castings stove had a great draw and ran like a champ.

BTW, this is an impressive forum (in the true sense of the word), but it's so big that I've spent a lot of time doing searches for info. I know is already here... any advice is greatly appreciated.

Rooster

 

[magentaman]

I would get a copy of the manual. It should show acceptable venting options.

I replaced a wood stove that had 8" single wall pipe (straight up through the ceiling). That exact installation was shown in my manual.

Most of the pellet vent manufactures that I have looked into, make an adapter for this. Here is the one I used.

It was made to work with double wall stove pipe, but my single wall fit nicely into it. I put two beads of sealant on the stove pipe and secured it with stove pipe screws.

I can't imagine you having any issues if your stove vented well.

 

[SmokeyTheBear]

Do the EVL calculation and check the altitude chart before doing anything or you'll likely be back here later with burn issues. You really should do a full length run with a proper termination cap.

 

[gorooster]

Thanks, guys. I think I'll go w/ what I've got, keeping a careful eye out for problems and opting for the 3" SS if I see inefficiency. Smokey: I agree w/ the need to run the entire length, but just not sure if 3" pipe is the pipe to run (and I don't think I've ever met a bitter Australian).

 

[SmokeyTheBear]

Thanks, guys. I think I'll go w/ what I've got, keeping a careful eye out for problems and opting for the 3" SS if I see inefficiency. Smokey: I agree w/ the need to run the entire length, but just not sure if 3" pipe is the pipe to run (and I don't think I've ever met a bitter Australian).

You need to visit some Australian bars and order their version of an English Bitter. Anyhow, that's my story and I'm sticking to it.

 

[DexterDay]

At that elevation it may require a 4" liner.

How far from the pellet stove to the stove pipe, where you want to adapt? May be beneficial to use 4" to there.

 

[gorooster]

The pellet stove would be directly underneath the 6" stove pipe, which goes up 6", horizontal 1', 45 deg. for about 2', then straight up. I was hoping to use existing 6" all the way through the flue and resort to the 3" SS if I had problems (and I could snake that stuff down there with some ease). Would the 4" fair better than the 3"?

 

[magentaman]

The 4 " would give you better draft to the 6". If the 6" goes all the way out the top with a cap, I would run 3 or 4" up to your 6" and call it good.

 

[gorooster]

Bless you, Pellet Nerds, one and all...