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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Wed Jan 31, 2018 6:45 pm Post subject: HLT Water Level for Mash Recirculation |
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I just started to test out my system and ran through a brew process with just water - no grain. After heating up 17 gallons of water in my HLT I transferred 7 of those gallons to my MT for strike water, emulating a typical brew day. That left me with 10 gallons in the HLT. My HERMS coil is fully submerged at about 14 gallons (this was purchased from Kal, and the bottom hole of the coli sits about an inch above the heating element. The heating element is about 3 inches from the bottom, as instructed).
I've never used a HERMS system before. Do I refill the HLT, let it get to mash temp, then start recirculating, or do I start recirculating even though the coil isn't fully submerged? I'm not sure the right answer to this. If I have to fill and reheat another, say 4 gallons, that's going to take quite a bit of time and the strike water in the MT will begin to cool, taking a longer time to reheat before I can dough-in. Alternatively, if the coil isn't fully submerged I'm not sure if the mash that starts to run through it will stay at the desired target temp.
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Link Posted: Wed Jan 31, 2018 7:29 pm Post subject: |
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Given that you mentioned starting with 17 gallons, I'm assuming you have 20 gallon kettles like me. I would fill your HLT more. Fill to 20 gallons.
See the step by step instructions here: http://www.theelectricbrewery.com/brew-day-step-by-step
That said, It's ok for the HERMS coil to be a bit exposed. Won't make much of a difference with heat transfer. Sometimes my water level is an inch or two below the top of the coil after I transfer strike water from HLT to MLT. No issues.
If you find that it's VERY exposed after you transfer because you're making some massive 1.110 beer that needs lots of strike water or your kettles are undersized, simply fill the MLT and HLT separately at the start of the brew day: Strike water in the MLT and then enough water to cover the HERMS in the HLT (or the sparge amount - whichever is more).
Are you sure the HLT element is 3" from the table top? Looking at your pics from another thread, there seems to be a lot more room under the HLT element box than what I have:
Kal
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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Wed Jan 31, 2018 9:12 pm Post subject: |
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Quote: | Are you sure the HLT element is 3" from the table top? Looking at your pics from another thread, there seems to be a lot more room under the HLT element box than what I have |
Not from the table top. I drilled the hole about 3", maybe 3 1/4 on center from the bottom of the kettle. My coil is about 1 1/2" on top of the heating element. See pics below
Quote: | simply fill the MLT and HLT separately at the start of the brew day: Strike water in the MLT and then enough water to cover the HERMS in the HLT (or the sparge amount - whichever is more). |
Sorry, I don't understand. The MLT doesn't have a heating element. Start the recirculation at the time you start to heat up the water in the HLT?
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Wed Jan 31, 2018 9:54 pm Post subject: |
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Great stuff, as usual. Thanks Karl.
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