LsFarm wrote:Check for enough air getting to the coal, [grate choked with ash?
The slide grate has a bunch of holes in it - moving the grate in and out removes a lot of the finely powdered ash to the drawer beneath it.
and enough draft to pull the air past the coal and up the chimney. [no dampers closed or chimney restricted?
There is a manual damper in the pipe up about two feet above the stove. When I'm re-firing it, the dam[er is open. When I'm heating it's about 7/8 closed. allows the gases to pass, but noit much heat going up.
Just one large lump won't very much, the coal chunks seem to feed off each other. The heat from one chunk heats the neighbor, which in turn returns heat. The result is a lot more btu's
I've noticed the same thing, a single large chunk isn't very impressive, but several together make some serious heat if the air is getting to them.