oliver power wrote:In the 30-95, the back wall of the firebox is slanted, and will allow clinkers to build. When running my 30-95, I simply leave the clinkers build on the angled part of the fire box(behind the hopper). What drops down out of the hopper, and burns on the grates is what counts. This helps put the heat out front, which transfers up through the finned heat exchanger. At the same time, gasses have to travel around the clinkers/hopper before going out the smoke stack. Are these the unburnt coals you are talking about? Or are you talking about the unburnt coal from letting the fire go out? I clean out ALL clinkers when fire goes out.
I think my problem has been mostly a result of letting the fire go out cold. I guess everyone has to deal with this if they don't keep a continuous fire.
What I've been doing to burn off the clinkers left after a cold dead fire is to burn a hopper of nothing but dry wood at high temp. The heat from the wood is enough to consume that thin layer of cold clinkers that is right over the grate.
Then with a little layer of hot coals at the end of the wood burn start my next coal-only fire.
I have not noticed any accumulation on the slope so in that respect I may be OK once the hawk of winter kicks in and I can burn coal continuously.
Thanks for taking the time to help me out!