Wood furnace burn temps

crzybowhntr Posted By crzybowhntr, Jan 7, 2018 at 2:34 PM

  1. crzybowhntr

    crzybowhntr
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    Mar 6, 2013
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    Hello. I have an energy king 480ek and am curious as to what a good burn temp is? Do you measure the temp on the door, directly above it, or above the sliding baffle handle? Thanks.
     
  2. Jgib4

    Jgib4
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    Dec 31, 2017
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    I put my thermometer on the pipe next to the wall. I try to keep it above 250 as any less it turns into creasote range. Ideal would be 250-500. If you walk outside while your burning and the smoke is clear you are in the good range and not producing creasote.
     

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  3. 3fordasho

    3fordasho
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    Jul 20, 2007
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    I run a probe type thermometer into the flue about 12-18" from the outlet of the furnace. I like to keep it over 250F and under 625F. Under 250F is ok if your just down to coals at the end of the burn. Search for a Tel-tru replacement thermometer for the "big green egg".
     
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  4. crzybowhntr

    crzybowhntr
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    Mar 6, 2013
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    Thanks for your replies. I have a hard time keeping my flue temps that hot without having high draft issues. I have to use a baro dampener and if not my manometer will read well over 1. Would having an 8" chimney system on it have anything to do with it?
     
  5. maple1

    maple1
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    Sep 15, 2011
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    But how are you measuring your temps? Magnetic guages are very inaccurate IMO and should not be relied on to determine how you fire.
     
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  6. crzybowhntr

    crzybowhntr
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    Mar 6, 2013
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    Magnetic. I`ll look into another method and compare. Thanks for the heads up
     
  7. JRHAWK9

    JRHAWK9
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    Jan 8, 2014
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    I use a probe (BBQ Thermometer) about 15" or so from collar.

    The highest temps I have seen is when it was very cold out and was loading on hot coals with the computer set to absolute max burn and they reached 466° before the computer went to pilot mode. This was a temporary (maybe 5 minutes) max though and as soon as the computer went to pilot they started to fall and sat around the 400° area. Again, this is with the furnace running balls out.

    Under normal heating conditions, which it spends 90% of the time at, my flue temps range from 270° to low 300's. When on pilot they will sit at high 200's or so. When changing from pilot to opening the damper to maintain the computer temp setpoint (happens early in the burn when starting a fire or later in the burn), they will range from the 270 - low 300's. During this scenario when the computer opens the damper they will trend up to low 300's until the computer goes back to pilot then they will fall to the higher 200's. Rinse and repeat until things settle in and then the damper will remain closed and flue temps will remain high 200's to low 300's.
     
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  8. crzybowhntr

    crzybowhntr
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    Mar 6, 2013
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    WOW!! That is detailed. I`ll see what I can do over the next week and get a new probe and report back
     
  9. maple1

    maple1
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    Sep 15, 2011
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    Just for a bit more info, I have a probe beside a magnetic. The magnetic reads around 100c less than the probe when I am at pretty well full burn. (I don't have a furnace - just a thermometer comparison)
     
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