By: Rob R. On: Wed Dec 12, 2012 9:27 am
How low you can run it will depend on the coal, and the draft. Sadly I think trial and error is the only way to find out what your "bottom line" reliable fire settings will be. I don't think narrowing the grate area would do you any good, and would likely cause problems.
Experiment with the settings, and maybe get one of those gizmos that turns on/shuts off an outside light if the temperature gets too low.