LsFarm wrote:Hi MP, as devil5052 says,, you must have a deep firebed.. fill the firebox to the top of the firebrick..
Next: what does the ash in the ash pan and in the bottom of the firebox look like?? Is it hard and cruchy, and hard to shake down into the ashpan??
If you aren't getting all the ash shook out of the fire, then it will sit on top of the grates and restrict the airflow to the coal fire.. this will necessitate you opening the air to the fire more than normal, to get a hot fire to create a strong draft which is needed to pull the air through the fire...
If the grates are not clogged by ash, then you will get easy flow of air through the coal and a good fire.
The other possibility is your coal... do you know what brand it is or where it came from.. all coal is not the same.. so may look the same, but will be very difficult to burn well... You may want to try a few baggs of a known brand of coal to see if it helps your situation.
Next,, is the air damper control on the loading door closed... for anthracite you do not want any air entering the stove above the fire.. this reduces the draft available to pull air through the fire from the ashpan spinner air control. Are your loading door gaskets in good shape, are they leaking?? Use a candle or a cigarette and go around the perimeter of the door, if the gasket isn't sealing the flame or the cigarette's smoke will be pulled into the stove...
Hope this helps.. Greg L
Ok, here we go. I have always run this stove full to the top or a bit higher of the firebricks in the back.
I had a few Klinkers in the middle
of the coal bed this morning, with several unburned peices above them on top. There was a good bit of ash on the bottom. However, above the was a good bit of coal that had not broken down to ash - hard and crunchy like you say.
I did have some coal still burning in the back left corner. The rest was out.
I'm burning Reading Anthracite coal.
After restarting it at 10 AM, it is still going very nice at 5:30. I have 425 degrees with 3/4 open. 28 degrees and calm outside.
There's no vent on my stove door and all gaskets are AOK - new stove.
I'm a newbie and missing something that's probably right under my nose!