Cant figure out why i get a large amount of unburt coal in ash pan. Fire is not falling into ash pan. First year with a stoker. Love the stove but cant figure out why it is not burning all the coal.Have good draft, nice flame. Any and all help is apreciated. Kyle
I would take a good look at the coal to make sure that it's not slate or mixed coal. If you take a good look at the fire, when burning at a high rate, it is about 4"to 6" inches long. A piece of coal takes about 30 minutes to travel from the back of the fire to the front. If this coal does not burn when it is bedded in the middle of the fire for that period of time, there is a good chance that it's not a good coal. Or it could be sized a little bigger then rice. Our stoves do not like to go much over 30% buck, just doesn't burn up properly. I think you will find no matter what coal you burn, you'll always get some black in the ash pan.
I expect to find some unburt in the ash pan. Maybe what i am seing just seams like it is alot to me. This is a constant if it's burning on high or low. I thought maybe it was the bulk i had got,so instead of getting more bulk I started using bagged. Still with the same results. Maybe there is something that i think is ok but is not. What should the fire look like when it is burnig low.? Such as flame size. Thank again for the help.
Your settings on your thermostat, go into setup-Deg-F, min- 6, max40-45, tbrn-n, HLF -0, ign -n, fr is a variable. If your settings are like this, then your OK. When your burning on low, you will have very little flame.
If you have a digital camera take a picture of the ashes and post it. Stokers never fully burn coal to powder, you can expect some "unburned" coal but it shouldn't be excessive. As I pointed out before in another thread burning buck in my stoker produces a chunky ash. The same exact coal burned in a hand fired stove burns to powder...