O.K. This question comes under the heading of something that doesn't jive with my previous understanding of things, but I know my previous understanding of many things is flawed. I have searched for similar posts on this subject, and in reading replies to turbocruiser's post of earlier this month regarding chimney pipe comparisons, I did learn a few things.
As for my "previous understanding": I was under the assumption that one ALWAYS had to maintain 2" from class A chimney pipe to combustibles such as ceiling joists.
I will be putting in Excel's class A 6" insulated chimney pipe for my new Heritage. In looking at the square support box that extends into the living area from my attic, I notice that the clearance from the outer edge of the actual pipe is ~ 1 inch to the square support box that will presumably contact framed joists in the ceiling. Reading their instruction manual, this information is verified.
Knowing that Excel has one of the really good reputations out there, and believing I am correct in understanding that they have met the U.S. and Canadian standards, I suppose I should say, "good enough". Has anyone else had to rethink what they thought they knew on standard clearances? Or does anyone care to shed a little light on presumably when 2 inch clearances were changed dependent upon testing results?
Thanks.
As for my "previous understanding": I was under the assumption that one ALWAYS had to maintain 2" from class A chimney pipe to combustibles such as ceiling joists.
I will be putting in Excel's class A 6" insulated chimney pipe for my new Heritage. In looking at the square support box that extends into the living area from my attic, I notice that the clearance from the outer edge of the actual pipe is ~ 1 inch to the square support box that will presumably contact framed joists in the ceiling. Reading their instruction manual, this information is verified.
Knowing that Excel has one of the really good reputations out there, and believing I am correct in understanding that they have met the U.S. and Canadian standards, I suppose I should say, "good enough". Has anyone else had to rethink what they thought they knew on standard clearances? Or does anyone care to shed a little light on presumably when 2 inch clearances were changed dependent upon testing results?
Thanks.