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Old 02-10-2013, 11:15 PM   #11
mpcluever
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Direct firing my mash tun while recirculating has been a huge improvement to my brewery. Efficiency went WAY up. Without recirculating with that full width false bottom, the wort underneath superheats and will boil (learned that the hard way when I killed my pump with the burner on). It didn't scorch the grain, and the bulk of the grain bed didn't get anywhere near boiling, but there was some scorching of the wort. Without a pump, I would not direct fire my mash. If you have a domed false bottom that doesn't cover the entire bottom, near constant stirring may work, but sounds like a lot of effort. Personally I'd stick with a cooler at that point.

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Old 02-11-2013, 07:53 PM   #12
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You can use a burner if it is a full false bottom. Although I would suggest low heat not a 140000 btu burner wide open. Is your intent to maintain Temp or to step mash. If you trying to raise the temp more than a few degrees I would recirculate and stir the mash and you will be fine, if its a diplomat false bottom.

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