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Old 03-03-2013, 03:56 PM   #21
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Direct firing temperature adjustments are kind of the worst... You get a crappy temperature gradient, you tend to overshoot or undershoot depending of where is the sensor or how tall your grain bed is, you apply direct high heat to part of the grain bed... plus you want to control gas flow, which might not be harder than controlling a pump or a heating element, but is sure the less secure approach. HERMS and RIMS setups sure look better in pretty much every aspects...

Is there a reason why you would want to direct fire your MLT instead of the other options?
I know there are a million threads debating RIMS vs Direct fire vs HERMS. I already have a burner under my mash tun that Ive been using for the heat and stir method, so it only seems natural to run with a direct fired rims. I thought about moving to a RIMS, but i dont know if it is worth scrapping a portion of my system for a complete redesign. I've got to imagine that whether its a RIMs tube or HERMS, just about every system is going to have some degree of "yo-yoing" on the temperature.

Plus one of the most copied systems of all times uses a direct fired RIMS.
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Old 03-03-2013, 06:05 PM   #22
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As long as you considered the other options, carry on... ;-)

(otherwise, I forbid you to continue!) (lol right)

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Old 03-03-2013, 06:17 PM   #23
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The wiring aspects of the controller and it's components is starting to make sense to me, however the only thing I am still not sure on is power source. Is it possible to power a pid that controls 1 honeywell valve and 2 pumps with a single 20 amp circuit on a standard household outlet? If not how about just the pid and valve?

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Old 03-03-2013, 06:21 PM   #24
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Give me a few days. I'll try to come up with a diagram and wiring plan using the Auber Instruments PID - SYL-2352

Just as a reference, here is a fairly complex one that I drew quite a while ago using the BCS-460 controller:
You have diagrams for BCS systems? Now I know I'm going to have to hit you up eventually.

How about Brewtrollers?
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Old 03-03-2013, 06:23 PM   #25
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The wiring aspects of the controller and it's components is starting to make sense to me, however the only thing I am still not sure on is power source. Is it possible to power a pid that controls 1 honeywell valve and 2 pumps with a single 20 amp circuit on a standard household outlet? If not how about just the pid and valve?
Easily. You should have no problem doing it on a standard 15A, for that matter.
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Old 03-03-2013, 06:33 PM   #26
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Easily. You should have no problem doing it on a standard 15A, for that matter.
Awesome thanks
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Old 03-03-2013, 11:11 PM   #27
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I know you are looking to build this one your own, but if you were looking for one commercially produced to use as an example blichman makes the "tower of power". It's really expensive about 600$. If you by the controller and stand with the pump the total is about 1500$ or so. I wish I was rich enough to be able to drop that much money on a controller. Good luck.

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Old 03-04-2013, 04:18 PM   #28
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I know you are looking to build this one your own, but if you were looking for one commercially produced to use as an example blichman makes the "tower of power". It's really expensive about 600$. If you by the controller and stand with the pump the total is about 1500$ or so. I wish I was rich enough to be able to drop that much money on a controller. Good luck.
You could buy the EBC2 from higravity homebrew and it would run you $300 (before shipping) and all you need after that is a couple thermowells and a coulpe Ranco ETCs. You'd bee all in for about $500.

http://www.highgravitybrew.com/productcart/pc/viewPrd.asp?idproduct=3073

http://www.etcsupply.com/ranco-etc111000000-digital-temperature-controller-p-86.html

All you have to do is wire a couple plugs up. Even someone who is totally electrically challenged like myself can wire a plug. This is about as affordable as it gets if you don't have someone to really walk you through it.
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Old 03-06-2013, 04:52 AM   #29
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Originally Posted by sgraham602
Can anyone point me in the direction of a good resource on how to build a PID controller for a direct fired mash tun? I'd like to make a set up with a gas solenoid that will auto fire my mash tun burner.

Is it hard to do? (I have very little electrical experience)
Auberins.com is the best source for most brewing related electronics
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Old 03-06-2013, 04:53 AM   #30
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Man I wish I understood what that means. I was really hoping for someone to post an idiot proof answer. Where do you get the controller?
Start at Auberins.com and go from there - wiki and www.theelectricbrewery.com should answer any other questions.
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