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Connect Temperature Controller to Chest Freezer

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golden_guy

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Jul 14, 2016
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Hello
I plan to buy a pre-wired temperrature controller to convert my chest freezer to fermenter.
Q1- Are the following wiring correct?
a) connect temp controller to wall socket.
b) connect the chest freezer to the temp controller.
Q2- If yes, is there any risk duo to automatic power on/off several times a day on the freezer?
 
1. You are correct.
2. The freezer already does that in a way when you're using it normally except an internal switch kills the power. There should be no issues.
 
One thing to remember to do is set your freezer's setting to the coldest possible since the ATC device will have control over the on/off cycle. You don't want the freezer's internal thermostat to come into play. I know you plan to use a freezer, but a tip for the future if you expand your equipment:

I use a fridge and had the temp setting of the fridge to be mid-scale. With the ATC set at 35F to lager condition my kegs, the fridge with the ATC never would get down below 40F. Once I realized the mistake and set the fridge's internal temp down to the lowest it could be set, all was fine.

One more variable.....if you select a device like an Inkbird 308 which is what I use, you'll also have the capability to plug in a heater. It is somewhat rare that only cool will do the job, but that depends on where you have your freezer/fermenter located. If its outside in a garage, your beer may get cold in the winter and you need to have some sort of heater. I use a heating belt and others use a light bulb in a paint can....and there are other solutions as well. Low wattage and safe is the approach.
 
Last edited:
One thing to remember to do is set your freezer's setting to the coldest possible since the ATC device will have control over the on/off cycle. You don't want the freezer's internal thermostat to come into play. I know you plan to use a freezer, but a tip for the future if you expand your equipment:

I use a fridge and had the temp setting of the fridge to be mid-scale. With the ATC set at 35F to lager condition my kegs, the fridge with the ATC never would get down below 40F. Once I realized the mistake and set the fridge's internal temp down to the lowest it could be set, all was fine.

One more variable.....if you select a device like an Inkbird 308 which is what I use, you'll also have the capability to plug in a heater. It is somewhat rare that only cool will do the job, but that depends on where you have your freezer/fermenter located. If its outside in a garage, your beer may get cold in the winter and you need to have some sort of heater. I use a heating belt and others use a light bulb in a paint can....and there are other solutions as well. Low wattage and safe is the approach.

I'll say that my beer would get cold in the garage. An unheated garage with the doors closed still was -25 yesterday morning. Needless to say, I don't even try to ferment beer in there.
 
I'll say that my beer would get cold in the garage. An unheated garage with the doors closed still was -25 yesterday morning. Needless to say, I don't even try to ferment beer in there.

LOL....that's cold! I live in SC so my temps are moderate, but I still have the need for heat and cool in my system since I am in an non-temp controlled brew cave. By night the heat kicks on, by day the cool cycle runs....provided I am in the fermentation mode and not lagering. Without saying, sounds like you are forced to put your ATC controlled system inside your home!
 
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