Finished it up today, fired with wood and switched immediately to coal. High temps here today in high 30's and low 40's, coal idles better than wood. Fired right up without a hitch, cam right up to temperature, and when the combustion fan stopped the wood fire tended to keep going a bit.
Burned down to a bed of coals, and waited for "demand". Need combustion fan to light the coal on bed of wood coals. Turned on Modine and pulled water temperature down neatly in about ten minutes. Put a layer of coal on top, switched fan on and sat down. About a half hour later the coal was all red, and I filled the boiler with 40 pounds of chestnut coal, cracked the overfire air about 1/3, closed the door and turned the blower back on. Took about another 45 minutes to get the coal lit and the boiler to go off on high limit.
Aquastats are never exact, and it was going off at 165/170 per the thermometers in both boilers. Set it up a bit higher, and watched it come up and shut down. Very nice, fire settled down immediately and temperature held dead on. Went down a little while ago and added another 15 or so pounds of coal, during demand, and once it came back to high limit and the coal was all red, shut it up for the night.
It's going to be interesting to see what's left in the morning. Nice not carting wood up the stairs by the bag and throwing it into the fireplace insert. REALLY nice burning free coal.
Stack temperatures interesting. During high fire, gets up around 350 degrees, and then drops during idle to 125 to 150. Normal? Good? Fan comes on and it doesn't take long to get right back up there.
Burned down to a bed of coals, and waited for "demand". Need combustion fan to light the coal on bed of wood coals. Turned on Modine and pulled water temperature down neatly in about ten minutes. Put a layer of coal on top, switched fan on and sat down. About a half hour later the coal was all red, and I filled the boiler with 40 pounds of chestnut coal, cracked the overfire air about 1/3, closed the door and turned the blower back on. Took about another 45 minutes to get the coal lit and the boiler to go off on high limit.
Aquastats are never exact, and it was going off at 165/170 per the thermometers in both boilers. Set it up a bit higher, and watched it come up and shut down. Very nice, fire settled down immediately and temperature held dead on. Went down a little while ago and added another 15 or so pounds of coal, during demand, and once it came back to high limit and the coal was all red, shut it up for the night.
It's going to be interesting to see what's left in the morning. Nice not carting wood up the stairs by the bag and throwing it into the fireplace insert. REALLY nice burning free coal.
Stack temperatures interesting. During high fire, gets up around 350 degrees, and then drops during idle to 125 to 150. Normal? Good? Fan comes on and it doesn't take long to get right back up there.