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Old 06-11-2007, 12:15 AM   #7
spamTHISbrp@yahoo.com
 
Default Re: Thermostat that goes down to 32F?

If I want to set a thermostat for 40, I'd like some settings below
that, since errors tend to be much worse near the edges of a
thermostats range, and less near the middle.

I know that this garage stays a fair bit warmer than the outside, so
I'm hoping to control it via thermostat vs timer or other means.
I just filled up that oil tank, and it hurt!


Dave

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Old 06-11-2007, 03:51 AM   #8
almoran@hotmail.com
 
Default Re: Thermostat that goes down to 32F?

On 22 Nov 2005 11:50:36 -0800, spamTHISbrp@yahoo.com wrote:

>If I want to set a thermostat for 40, I'd like some settings below
>that, since errors tend to be much worse near the edges of a
>thermostats range, and less near the middle.
>
>I know that this garage stays a fair bit warmer than the outside, so
>I'm hoping to control it via thermostat vs timer or other means.
>I just filled up that oil tank, and it hurt!
>
>
>Dave


Well you seem to be pretty much set in your ways, even after you were
given some very good advice. What the heck, use a 32 degree stat if
you can find one. Then you'll be posting back here for information on
how to fix all the mess that the frozen pipes caused. Best of luck!
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Old 06-11-2007, 03:52 AM   #9
Gingertoad
 
Default Re: Thermostat that goes down to 32F?


spamTHISbrp@yahoo.com Wrote:
> If I want to set a thermostat for 40, I'd like some settings below
> that, since errors tend to be much worse near the edges of a
> thermostats range, and less near the middle.
>
> I know that this garage stays a fair bit warmer than the outside, so
> I'm hoping to control it via thermostat vs timer or other means.
> I just filled up that oil tank, and it hurt!
>
>
> Dave


Why can't you use a refrigerator thermostat (the one for the fresh foo
compartment)? They are available at supply houses for refrigeratio
components

--
Gingertoad
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Old 06-11-2007, 03:53 AM   #10
TURTLE
 
Default Re: Thermostat that goes down to 32F?


spamTHISbrp@yahoo.com wrote:
> I need a thermostat (simple mercury switch style) that goes down to 32F
> or so, so I can heat a space only just enough to keep it from freezing.
>
> So far, no luck.
>
> Plan B is to just mount a regular thermostat, tilted, so as to skew the
> temperature range. Just need the right night to calibrate it...
>
>
> Dave


This is Turtle.

there is a defrost terminator used as to stop the defrosting of
refrigerator coil and to reactivate the power to the timer and element.
this device will cut in at 32 degrees f and cut out at 60 degrees f.
Anytime it hit 32 degree it will cut in and bring the room up to 60
degrees F . the fall back is it's long run time to get to 60 degrees F
befotre cutting off.

They can be bought at appliance parts store and is called a defrost
terminator on a refrigerator. One kind is a General Electric WR50X60
which would be the one above that I\was talking about. there is
different ones with different temperature and you could talk to them
and see about a better temperature on it like in cut in and cut out.

TURTLE

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Old 06-11-2007, 03:53 AM   #11
George E. Cawthon
 
Default Re: Thermostat that goes down to 32F?

spamTHISbrp@yahoo.com wrote:
> I need a thermostat (simple mercury switch style) that goes down to 32F
> or so, so I can heat a space only just enough to keep it from freezing.
>
> So far, no luck.
>
> Plan B is to just mount a regular thermostat, tilted, so as to skew the
> temperature range. Just need the right night to calibrate it...
>
>
> Dave
>


You have two reasonable choices if you haven't
found a thermostat that specifically goes that
low. First, I've used a thermostat from an
electric water heater. The one I used turned on
at about 40 degrees at the lowest setting, so you
might have to bend something or move a stop to get
the screw to lower the range. Second, most small
heaters in the 1500 watt range have a thermostat
that can be moved down below 40 degrees. Again, a
tiny amount of bending of the structure to open
the gap might be necessary. The bimetal part
(don't bend that part) should function reliably at
40 to 30 degrees. Anything other than an
electronic thermostat or a fairly expensive
mechanical thermostat will probably have a range
of 5-6 degrees between turn on and turn off, so be
aware of that.
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Old 06-11-2007, 03:53 AM   #12
nicksanspam@ece.villanova.edu
 
Default Re: Thermostat that goes down to 32F?

<almoran@hotmail.com> wrote:

>spamTHISbrp@yahoo.com wrote:
>
>>If I want to set a thermostat for 40, I'd like some settings below
>>that, since errors tend to be much worse near the edges of a
>>thermostats range, and less near the middle.

>
>Well you seem to be pretty much set in your ways, even after you were
>given some very good advice. What the heck, use a 32 degree stat if
>you can find one...


He might enjoy a $10 Thermocube:

http://www.countrysupply.com/products/sku-BEW19.html

Nick

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