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Old 06-20-2013, 06:51 PM   #1
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Default Automated Boil Kettle on single tier

Building a single tier brewery and I’m going back and forth on using a third controller for the brew kettle. Why or why not automate the boil kettle to maintain temp? Anyone have photos of a rig automating all three?

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Old 06-20-2013, 06:59 PM   #2
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I have a toolbox build and I use the MLT pid on the brew kettle when it's time to boil. I just switch to manual mode and to go 72% of full power (5500 ulwd element) That works fine for me.

Currently I simply leave the MLT thermocouple connected to the PID. Since I'm going in manual mode I don't need the temperature gauge, but you do have to leave one connected or the PID faults.

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Old 06-20-2013, 07:06 PM   #3
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What I’m thinking is why not have the boil kettle automated just like HLT and MLT? Having the boil kettle burner kick off and on to maintain a boil at 212, would it kick off and on too often or is it best to have the boil kettle manually controlled?

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Old 06-22-2013, 03:45 AM   #4
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Nickeldeposit,

Temp control doesn't work for boiling, as boiling occurs at 212F/100C, regardless of how much energy you're dumping into the pot.
I.E., I have a boiler that will maintain a boil (at 212) at 45% power of the element. It will also maintain a boil (also at 212) at 100% power. Boiling at 212 is a constant (altitude/pressure arguments aside). You can control how vigorous the boil is, but not the temperature of the boil.

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Old 06-22-2013, 03:47 AM   #5
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Quote:
Originally Posted by MuddyCreek View Post
I have a toolbox build and I use the MLT pid on the brew kettle when it's time to boil. I just switch to manual mode and to go 72% of full power (5500 ulwd element) That works fine for me.
Using a controller for the boil kettle is a great idea, but you have to change its mode of operation, as in the quoted post.
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Old 06-22-2013, 02:14 PM   #6
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I use temp control in my boil kettle while I am sparging. I set it to 200. Once I finish sparging I switch to manual mode and bring it to a boil at 100% then I lower it to 65% for the rest of the boil.

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Old 06-23-2013, 04:27 AM   #7
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Quote:
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... while I am sparging. I set it to 200. Once I finish sparging I switch...
<<<Another idea from Crane I'm stealing>>>
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