Freddy wrote:A Dwyer #5 is perfect.
I think Freddy meant this one
This link is broken, either the page no longer exists or there is some other issue like a typo.
4Mainer wrote:It keeps overheating to the dump zone. Have opened the baro damper all the way, no change, still rises to 200F and goes to the dump zone(1st floor).
Opening the baro won't help very much. Close your primary combustion air feed some (air that comes in under the grates). It should throttle back for you unless, like Freddy said, you have door gaskets not sealing well.
Bigger coal will burn hotter/faster if you demand it to. Smaller coal will idle easier. At least thats what I've observed in my experiences so far.
Good Luck and Welcome partner