On Mon, 26 Sep 2011 14:17:54 -0700, "Steve B"
wrote:

We want to add a wood burning stove to our bedroom/house wing. My wife
thinks it best to go up from the stove, 90 through the wall, and 90 through
the metal awning. I say a straight shot through the roof with a double
walled pipe with no 90's, much less TWO.

Comments from anyone with experience appreciated.

Heated an 1884 Victorian for 10 years, Steve. The pipe came out of the back of
the stove (90ª #1), went up about 6' and turned (90ª #2) horizontal to and
original thimble, into the flue (90ª #3), and never had a problem.

The good part was that the original flue dropped below the thimble into the
basement where there was a clean out for the original (bricked up) fireplace.

Cleaning was simple. Every morning, I opened the ports on the stove and let 'er
rip. After a short time, I could hear the creosote dropping into the trap. I
followed this routine every evening at about dinner time.

I did have a chimney service clean the system once a year. Most of the crap had
fallen into the old flue section below the thimble.

I know this is not a direct response to your query, but my point is that 90ª
turns don't seem to hurt. Of course the masonry flue was over thirty feet tall
and developed one heck of a draft. :-)

We burned about eight chords of hardwood a year.



__________________
Bill Waller
New Eagle, PA