I just installed the barometric damper. It went pretty easy. I had it set right in the middle at 4 (or .4). Fired up the stoker and watched the swinging gate. It didn't budge. After a few minutes I put my hand on the flue north of the damper. It was scalding hot. I adjusted the weight to 2 (or .2) and it started flapping. I'll go down in a little while and touch the flue again. I hope its only warm.
But I found another concern. When I removed the flue pipe I found a ton of fly ash in the elbow.
I shouldn't be surprised, but I am. There was a build-up at the first turn north and in the elbow of the chimney (where it turns to go into the house). Am I supposed to clean this out every year????????
Maybe I can install a T at the first turn and install a cleanout trap on the south end of the T? What do you guys do? Please tell!