Ok, I fired up my new keystoker A120 for the first time the past couple of days. The first time I tried it, it was around 40 degrees outside, and I could smell an odor throughout the house. (the unit is tied to my ductwork). After a half an hour of this not stopping I shut the unit off. The next day I fired the stove up again, and I found the damper for the combustion blower. I found that the smell was nearly eliminated by closing the damper most of the way. It was around 40 degrees outside, but I had to almost completely close the fan cover (only 1/4" open) and I could still detect a slight sulfur smell throughout the house.
Could it be that my chimney is not high enough to burn coal in these temperatures? I do not have a draft meter, but I held a lighter up to the baro-damper and it pulled the flame inward. Should I be manipulating the air intake cover as the weather cools off, to allow more air when it's colder out, and less (or maybe none) when it's around 40-50 degrees? Thanks. Oh and I put a CO detector in the bedroom to be safe and it has consistently read 0.