Heating limitations with false bottom? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Heating limitations with false bottom?

Reply
 
Thread Tools
Old 02-09-2013, 04:12 PM   #1
DarwinsMonkey
Recipes 
 
Oct 2012
Posts: 8


Just read in a book that you can't heat a MLT fitted with a false bottom. Just blew a wad of money on a SS 20 gallon pot with a false bottom and haven't got to use it yet. Was wondering if I wasted my money or if the book is false. What do you guys think? Thanks for any help.

 
Reply With Quote
Old 02-09-2013, 04:18 PM   #2
swackattack
Recipes 
 
Dec 2011
Pittsburgh, PA
Posts: 694
Liked 38 Times on 32 Posts


As long as you recirculate you should be fine

 
Reply With Quote
Old 02-10-2013, 03:30 PM   #3
mpcluever
Recipes 
 
Jun 2010
here
Posts: 636
Liked 39 Times on 34 Posts


They're probably referring to it while mashing, and probably correct. However, for initial heating, I heat my MT with a full width false bottom. The majority of the time, I don't recirculate, but since my thermometer is in-line, I have to occasionally to get the temp. I don't don't notice that the bottom is extraordinarily hot compared to the top and the temp stays pretty stable when I continue a recirc.

 
Reply With Quote
Old 02-10-2013, 03:38 PM   #4
tophmck
Recipes 
 
Oct 2009
Madison, WI
Posts: 193
Liked 4 Times on 4 Posts


What kind of false bottom are they referring to? You can't direct heat with a domed false bottom, but it's totally fine with a full false bottom. Just ramp up relatively slowly and recirculate.

 
Reply With Quote
Old 02-10-2013, 03:50 PM   #5
shelly_belly
Uncle John's Band
HBT_SUPPORTER.png
 
shelly_belly's Avatar
Recipes 
 
Jul 2009
Blow Southerners!
Posts: 1,658
Liked 189 Times on 149 Posts


RIMS-Recirculated Infusion Mash System, HERMS-Heat Exchange Recirculating Mash System, and Direct Fire are options.

Johnnyhitch1 Likes This 
Reply With Quote
Old 02-10-2013, 04:02 PM   #6
ColoHox
Compulsive Hand Washer
HBT_SUPPORTER.png
Recipes 
 
Oct 2011
Fort Collins, CO
Posts: 1,884
Liked 415 Times on 293 Posts


I direct fire my false bottomed MLT everytime I brew. Recirculation maintains even temps throughout. Did this book provide any reasoning for not heating?
__________________
Bacteria are the only culture some people have.

 
Reply With Quote
Old 02-10-2013, 06:46 PM   #7
guldalian
Recipes 
 
Mar 2012
St. Louis, Missouri
Posts: 269
Liked 15 Times on 11 Posts


I just started doing AG and I direct fire my mash in my kettle. No false bottom, but I also don't recirculate. I just stir every 10 min to ensure even temps throughout. Any problems with this?

 
Reply With Quote
Old 02-10-2013, 06:49 PM   #8
ColoHox
Compulsive Hand Washer
HBT_SUPPORTER.png
Recipes 
 
Oct 2011
Fort Collins, CO
Posts: 1,884
Liked 415 Times on 293 Posts


Quote:
Originally Posted by guldalian View Post
I just started doing AG and I direct fire my mash in my kettle. No false bottom, but I also don't recirculate. I just stir every 10 min to ensure even temps throughout. Any problems with this?
You will burn the wort that sits on the bottom. Then stir in new wort to burn on the bottom. Maybe small bursts of heat, with stirring, would be ok. You can also scorch the grains and that is not so tasty.
__________________
Bacteria are the only culture some people have.

 
Reply With Quote
Old 02-10-2013, 06:58 PM   #9
Shockerengr
HBT_SUPPORTER.png
Recipes 
 
Feb 2007
Posts: 468
Liked 27 Times on 23 Posts


My mashtun has always been direct-fired. It has a false bottom that doesn't even fully cover the bottom (keggle) It's been light scorched once in several years when forgot to open the valve on the pump when mashing in.

I recirculate (pulling from under the false bottom), and it doesn't take a lot of flow to keep from scorching.

The local micro-brewery direct fires under there mash tun with false bottom too.

 
Reply With Quote
Old 02-10-2013, 10:54 PM   #10
guldalian
Recipes 
 
Mar 2012
St. Louis, Missouri
Posts: 269
Liked 15 Times on 11 Posts


Quote:
Originally Posted by ColoHox

You will burn the wort that sits on the bottom. Then stir in new wort to burn on the bottom. Maybe small bursts of heat, with stirring, would be ok. You can also scorch the grains and that is not so tasty.
Well I use an electric glass top stove. I set it on the lowest possible heat during the mash, and it does small bursts of heat by itself (like any electric stove), but I also don't leave it on the whole time. Seems to be ok so far......

Lets take a vote. Who says I should get a pump to recirculate and who says I should get a beverage cooler MLT?

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Braided Tube vs. Domed False Bottom vs. Flat False Bottom? ianw58 Equipment/Sanitation 11 09-23-2013 04:45 PM
Anyone tried a solid false bottom for whirlpooling in a bottom-drain keggle djdixon1995 General Techniques 10 11-17-2012 06:50 PM
Heating element below false bottom fork Kettles, Mash Tuns & Hot Liquor Tanks 10 10-23-2012 10:17 PM
Center Pickup w/ False Bottom or Side Pickup w/o False Bottom craigsphillips Equipment/Sanitation 14 01-22-2012 05:22 PM
SS false bottom for 10 gallon cooler..grain all stuck under outside and filled bottom discgolfin All Grain & Partial Mash Brewing 10 05-06-2011 04:58 PM


Forum Jump