Is it "legal" to connect two 45 degree elbows (single wall stove pipe) directly to each other to make a 90 degree? Or do you need a section of pipe between them? If so, what is the minimum length of pipe required between elbows?
This article states you cannot link elbows directly together, but since it also states 45 degree elbows are not allowed, I'm thinking this is for class A chimney pipe not single wall stove pipe:
Lots of threads on here talk about using two 45's instead of a 90, but nothing I have seen has mentioned the details about how to actually do this. For background, in order to center my stove on the hearth, the pipe will have to shift sideways a bit before entering the masonry chimney. I am trying to plan out how to do this, which involves calculating offsets. For aesthetics I would prefer to minimize the diagonal travel, making it as close to the thimble as possible.
The simplest way I can imagine accomplishing this is with a 45 degree left, then a 90 degree into the wall (clocked 45 degrees to meet the diagonal of the first 45). However, I'm thinking it might also be possible to use two 45's instead with better draft. The first 45 would be rotated 45 degrees toward the wall as well, and the second clocked 45 degrees to join it. The minimum offsets in each case would involve directly connecting the elbows to each other, which got me wondering if this is even allowed. I want to make sure my plan is reasonable before getting too deep into building the hearth.
I'm dreaming of a simple CAD program for sketching these things out. Imaging being able to load components from the major suppliers and tinker with them before buying. But I digress...anyway, thanks in advance!
This article states you cannot link elbows directly together, but since it also states 45 degree elbows are not allowed, I'm thinking this is for class A chimney pipe not single wall stove pipe:
Lots of threads on here talk about using two 45's instead of a 90, but nothing I have seen has mentioned the details about how to actually do this. For background, in order to center my stove on the hearth, the pipe will have to shift sideways a bit before entering the masonry chimney. I am trying to plan out how to do this, which involves calculating offsets. For aesthetics I would prefer to minimize the diagonal travel, making it as close to the thimble as possible.
The simplest way I can imagine accomplishing this is with a 45 degree left, then a 90 degree into the wall (clocked 45 degrees to meet the diagonal of the first 45). However, I'm thinking it might also be possible to use two 45's instead with better draft. The first 45 would be rotated 45 degrees toward the wall as well, and the second clocked 45 degrees to join it. The minimum offsets in each case would involve directly connecting the elbows to each other, which got me wondering if this is even allowed. I want to make sure my plan is reasonable before getting too deep into building the hearth.
I'm dreaming of a simple CAD program for sketching these things out. Imaging being able to load components from the major suppliers and tinker with them before buying. But I digress...anyway, thanks in advance!
