Draft measurements

[kcellwood]

With the location of my stove I needed to install 3 - 90 ells from my stove to my existing clay lined chimney - 3" pipe. This is a two story inside chimney. I have a total of 2' horizontal run and 3.5' of vertical run. I was concerned about the resistance with this set up. When I bought the stove the guy that usually does the installs said I would be borderline with this set up. I have burned the stove for awhile and it seemed to burn well. Being this is my first year I did not have much to compare it to. With info and pics found on this forum I thought it was burning well. I finally got a magnahelic gauge and took some measurements with this set up. Full combustion blower speed gave me a reading of .62. Normal per manufacturer is .50 - .60. On slow speed I got .54. Normal is .35 - .45 so I slowed it down to .44. With nothing running and the natural draft from my chimney I get about .04. Anyway I think my concerns with the draft can be put to rest. Thoughts?

 

[SmokeyTheBear]

With the location of my stove I needed to install 3 - 90 ells from my stove to my existing clay lined chimney - 3" pipe. This is a two story inside chimney. I have a total of 2' horizontal run and 3.5' of vertical run. I was concerned about the resistance with this set up. When I bought the stove the guy that usually does the installs said I would be borderline with this set up. I have burned the stove for awhile and it seemed to burn well. Being this is my first year I did not have much to compare it to. With info and pics found on this forum I thought it was burning well. I finally got a magnahelic gauge and took some measurements with this set up. Full combustion blower speed gave me a reading of .62. Normal per manufacturer is .50 - .60. On slow speed I got .54. Normal is .35 - .45 so I slowed it down to .44. With nothing running and the natural draft from my chimney I get about .04. Anyway I think my concerns with the draft can be put to rest. Thoughts?

Yes watch out for ash build up it will happen faster with that convoluted venting.

 

[rickwai]

The better question is how are you going to get in to clean the pipe w/ no cleanout tees? I have done 2 installs similar to your this season (a PC45 and a XXV) and I came out of the stove w/ a 6"-12" pipe to a tee, up to breach height to a tee laid down w/ cap facing out, then into breach converted to flex to the top.
Cleaning will be a breezew/ this setup 2 story flex can be brushed from inside the house w/ ease. Bieng in the service end of things all my life, when I install anything I look ahead to ease of service, because I will most likely be the one to doing the work.