EMF520 Settings to Produce Steam

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Stove/Furnace Make: emf stoker
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Post By: riverfisher » Sun. Oct. 03, 2010 8:40 pm

I'm getting ready for winter and was wondering what I should set the feed and air at to produce enough steam for heat.

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Stoker Coal Boiler: EFM 520 DF
Coal Size/Type: Rice
Other Heating: Keystoker
Stove/Furnace Make: EFM DF 520
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Post By: Pa Dealer » Mon. Oct. 04, 2010 8:31 am

5 teeth 4 1/2 air..........


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Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
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Post By: Pacowy » Mon. Oct. 04, 2010 4:55 pm

I haven't run a 520, but based on making steam with a 700 stoker and a 900 boiler, I'd vote for the number of teeth that fills your radiators with steam (without building up a lot of pressure). However, I wouldn't go any higher than the number of teeth for which you can put in enough air to get an efficient burn. I think there are other threads here that tell you what the pot should look like. If you're burning rice that has a lot of undersized pieces, the fire my not "breathe" very well, and you may need a high air setting relative to the feed rate to burn efficiently (and may not be able to burn efficiently at high feed rates). I know EFM no longer recommends burning buck in a 520 (cue for whistlenut on that) but to make steam I'd suggest using at least "big" rice.


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