daluds wrote: How fast does the coal stop burning once the system is turned off?
From my experience with the my Van Wert which is very similar to EFM if not identical I'd have to guesstimate 3 or 4 hours minimum with a small bed of fire. I know this because some idiot has tendency to forget to turn the furnace back on if he had to turn it off to take the ashes out.
If it's stoking you don't want to go opening the ash door unless you want big lung full of fumes. I've probably restarted ours as long as 5 or 6 hours later and possibly longer but that would be when it got shut off with a very large bed of coal burning.