Stove Pipe Offset Needed?

[idealheat]

I’m working on installing a new chimney for a Woodstock Ideal Steel stove that I’m due to receive in November. Doing the layout from dimensions it looks like the stove pipe is going to need to be offset by about 1.5” to 2” to miss the roof truss. Do I need an offset joint to make this work or can a straight piece of pipe be used slightly out of plumb?

It will be about 5’ from the top of the stove to the cathedral ceiling support box.
I’m planning to use double wall pipe.
Thanks

 

[begreen]

I think I'd move the stove for that small correction. Off-plumb pipe jars the eye and can make poorer connections.

 

[idealheat]

I’d love to move it over, but this is a corner layout and to remove the offset I would have the corner of the stove too close to the wall. If I put the ceiling support box on the other side of the truss then the stove would need to shift 13.5” the other direction.

 

[reaperman1]

I’d love to move it over, but this is a corner layout and to remove the offset I would have the corner of the stove too close to the wall. If I put the ceiling support box on the other side of the truss then the stove would need to shift 13.5” the other direction.

Cant you pull the stove forward a little? I feel your pain, I'm in the same boat. I think by pulling it out a ways and maybe change the angle slightly it may solve the issue. It looks like it did on mine but I havent installed the chimney yet. Its a much simpler install to go strait up, not to mention its cheaper.

 

[GrumpyDad]

I’m working on installing a new chimney for a Woodstock Ideal Steel stove that I’m due to receive in November. Doing the layout from dimensions it looks like the stove pipe is going to need to be offset by about 1.5” to 2” to miss the roof truss. Do I need an offset joint to make this work or can a straight piece of pipe be used slightly out of plumb?

It will be about 5’ from the top of the stove to the cathedral ceiling support box.
I’m planning to use double wall pipe.
Thanks

I learned alot DIY'ing my stove.
When I designed an expansion, I did some research on stoves and figured I had what I needed clearance wise without interfering with a seating area or office entrance area.
The mistake I made was not considering how the pipe would run out being completely new to this. I had thought I was going to run it outside originally as an option and didnt care much. I changed my mind quickly after learning how much better it would be to run the pipe inside.
It became apparent fairly quickly to me that 1. I have a main beam to content with , so if I built my office 6" smaller or gave up on the idea of a larger dining area, I could have gone straight out. Neither of which I could really correct after the fact. 2. you will always have a truss in the way. Even if you could exit and miss a truss with a pipe, you will still need to center the pipe under the ceiling support box.

This is the mistake I made, I left myself NO wiggle room forward or side to side for the stove to move towards centerline with the ceiling support box when I was designing and constructing this place.

So I had two options, 45's and a shorter run toward the office area or toward what will be the dining area. I picked the dining area because the outside pipe wouldnt be as visible from the front of the cabin, and I could work over that area easier. Also, I picked a telescopic pipe for BOTH the angle and straight legs of the pipe runs. I cant imagine how much more difficult it would have been to be precise enough to have a non telescopic pipe on the angle run.

Here's my install pictured Sorry I didnt capture the ceiling support box. It is right on the other side of that elbow at the top.

 

[idealheat]

Here is the corner I’m working with. The picture is taken facing south and the trusses run north-south. From the perspective of the picture, the stove pipe needs to jog about 1.5” to the left or about 12” to the right. I currently have three thoughts.
1. Use one single wall elbow either at the stove or at the ceiling to make the offset. I think it’s possible to adjust a single elbow to make an offset without any angle change but I haven’t tried it yet. The straight run of pipe would be double wall. The issue with this approach is that it would have a portion of the single wall elbow slightly closer to the wall than the 17” requirement.
2. Run a straight double wall pipe slightly out of plumb (about 1.5” over the 5’ rise as is). I can possibly reduce that by moving the stove to the left. The wall to the left is currently 5.5” thick. It used to be an exterior wall and I’m wondering if it may be fired out some. There will be tile behind the stove so I’m thinking I might be able to remove the Sheetrock and furring strips if there so that the stove can move left a little. Any little bit will help reduce the angle.
3. The other option is to move the support box to the other side of the truss and have about a 16” offset coming diagonally out from the corner towards the center of the room.