Clearance to combustibles

[mikemc53]

I have a couple of questions:

Why with some stoves do they recommend greater distance to combustibles when using double wall as opposed to single wall? I would have thought that double wall would usually allow for a decrease.

Even with the proper distances I would like to monitor heat at the closest combustibles. I am curious - with drywall & wood trim, what is the danger zone, temp wise?

Just trying to figure some things out.

 

[begreen]

That is usually the case. What stove is this for?

The concern zone is roughly 180 degrees, with a good margin of safety at that. HW heating pipes are often at that temp.

 

[blel]

In theory, double wall pipe keeps inside of flue hotter which increases draft which causes stove to burn hotter. Hence greater clearances. In reality I don't know if this is true but I think that is the reasoning.