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Old 02-08-2010, 04:37 AM   #1
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Default Fermentation temperature control

I have been thinking about building a fermentation box out of foam. I have even bought a thermistat to alter for this project. I remembered my house that is rented, has a storage unit that i share with my slum lord. They have some appliances in there that is a real pain in the but. I have to scouch my table saw past this fridge every time i need to take it out. Wait a minute "there is a fridge right in my way". It is sort of outside. It is in a poorly insulated shed like thing with power about 5 feet away. I am not sure what the temps are in there but it is close to outside with temps running from 10- 45 degrees with less variation in the shed. I would like to take advantage to get a few lagers in before it gets to warm to use the natural cold outside.

My concern is in order to have consistant temps for fermenting then lagering in there I will need heat at times and refrig at times. Is there a system or thermostat that can do this? I was thinking of converting a Home Depot Thermostat but for 10 bucks more there seem to be premade ones. What would be easiest for my setup?

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Old 02-08-2010, 01:56 PM   #2
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As i see it I would need two temperature controls. One for a lightbulb in the fridge to heat and another to engage the fridge if it gets warmer than needed. Are there any other options?

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Old 02-08-2010, 10:38 PM   #3
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In case anyone is interested in how to do this. There is such a thing as 2 stage thermostats that can do this made by Ranco. The one draw back is the switching in it causes a limit in the Amperage it can handle. From 16A in the single stage to 9.8 amps in the 2 stage models. I planed to plug it into a fridge with a lightbulb inside to prevent too cold conditions but not sure what a fridge draws in amps will check when i get home. I am hoping that the cold snaps have ended and I can rely on a light bulb to keep it heated and just turn on the fridge and set a 1 stage thermostat it on the days it may get too warm.

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Old 02-08-2010, 10:44 PM   #4
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Check this out as well http://www.dwyer-inst.com/Products/Product.cfm?Group_ID=622&sPageName=Ordering , more than sufficient to control a frig.

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