VT9 Thermostat Help

[jriess11]

Hello,

I was wondering if anyone had a spec sheet on the VT9 Universal thermostat. I’m trying to convert a freezer into a refrigerator and am having some trouble getting it to maintain an appropriate temperature range (-1C to 4.5C). Any help would be greatly appreciated.

Thanks,
Joe

[helo_75]

Re: VT9 Thermostat Help

why on earth would you want to do that?

[jriess11]

Re: VT9 Thermostat Help

It was a cheap chest freezer just about the right size to hold a couple of kegs of beer. Frozen beer is not very good though. 😀

[helo_75]

Re: VT9 Thermostat Help

i wouldnt think youd ever get that to work if im honest.. not by usin a stat anyway

the only poss way would be to use some sort of timer, to switch it on/off at regular intervals

[jriess11]

Re: VT9 Thermostat Help

Why wouldn’t a thermostat work? I’m obviously missing something here.

Thanks for your advice BTW.

[dpm]

The average fridge ‘stat will cycle between your setpoint (5c maybe) and a cutoff of perhaps -10c. In a fridge there’s no problem as you’re not putting anything in contact with the coldplate, plus there’s a fair degree of circulation within the chamber.

In a chest freezer however there’s more of a chance of your product touching the cold zone, plus what circulation there is will give you a nice (bleedin cold) region at the bottom.

You’d likely be better getting some kind of cheapo temp. controller that you can program more reasonable hysteresis values into- or go for helo’s timeswitch option.
Some might even say a small circulating fan from a pc might help…

There *is* however one stat that might be the job- BC2, as used in wine coolers. According to my info it’s “off” temp varies from +3 to -18, on at 8.5c…

[jriess11]

Re: VT9 Thermostat Help

So if I somehow insulate the contents from the cold plate and provide adequate circulation, it could potentially work? I’ll give that a shot and if it fails, take your advice on using the temperature controller. Thanks much!

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