Hi. I have the same problem. I get a hot fire going and then add coal. Start working toward getting enuff to last through the night. Think I have it and get up next morning it is out. Really gets disgusting. When it got down to 16 the other night , it did burn all night. I am using the 983 hitzer hand fired. What am I doing wrong. Thanks for your help.Cap wrote:I have the same problem using a Harmon Mark III. I cannot keep a coal fire going for 12 hrs unattended, maybe not 8 hrs. This will be my 4th season burning coal. When it dies, I have at quite a bit of unburnt coal left behind. I believe my problem lies within my flue. The Mark III has a 6" outlet. My flue is 8" x 34' high. My thinking is as the outside temps drop overnight, and the stove cools off a bit, my draft slows down allowing the fire to die. I typically would add a wood log on top of the fire at night in order to maintain a fire till morning. Does anyone believe my theory is correct? I am debating adding a 6" ss liner but at $550, I want to be sure this is the answer.
Lehigh Twp, PA
Mlou wrote:Yes, a SS liner is reccomended. Sounds like both of you might not be shaking the ash out completely.
Another suggestion - just for laughs & giggles, crack a window open in the room where the stove is. If it is starving for air, you will experience what you describe. If the stove burns better with the window open, you need some more air brought in, easy enough to fix. (The open window is just a test, I am not suggesting burning with it open all the time)
firstname.lastname@example.org wrote:When I first start my coal fire, it burns hot and thoroughly-the ash is mostly dust. After about 24 hours, the lower grate cools off, solids begin to form, and the ashes contain unburned coal which have to be manually removed from the grate. Why does this happen?