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Garage heater - low temps Mark 10-30-2007
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Posted by dpb on October 30, 2007, 9:48 pm
hallerb@aol.com wrote:
>>>>> I have an insulated garage that I want to heat, but just above
>>>>> freezing. ...
>>> Hook ANY heater to a timer?
>> If it's an electric heater, make sure the timer can handle such a load.
>> If it's a gas heater, use a setback thermostat?
>
> hook any electric heater to a cal stat thermostat, use a relay if
> necessary for higher current
>
>
http://www.grainger.com/Grainger/wwg/productIndex.shtml?L2=Cal-Stat&operator=prodIndexRefinementSearch&originalValue=calstat+thermostat&L1=Thermostats%2C

More suitable is probably the freeze-protection thermostat

<http://www.grainger.com/Grainger/wwg/productIndex.shtml?L2=Freeze+Protection&operator=prodIndexRefinementSearch&originalValue=thermostat&L1=Thermostats%2C>

--


PexSupply Full Banner
Posted by RickH on November 2, 2007, 1:56 am
> hall...@aol.com wrote:
wrote:
> >>>>> I have an insulated garage that I want to heat, but just above
> >>>>> freezing. ...
> >>> Hook ANY heater to a timer?
> >> If it's an electric heater, make sure the timer can handle such a load.
> >> If it's a gas heater, use a setback thermostat?
>
> > hook any electric heater to a cal stat thermostat, use a relay if
> > necessary for higher current
>
> >http://www.grainger.com/Grainger/wwg/productIndex.shtml?L2=Cal-Stat&o...
>
> More suitable is probably the freeze-protection thermostat
>
> <http://www.grainger.com/Grainger/wwg/productIndex.shtml?L2=Freeze+Pro...>
>
> --

Thanks

This one covers the range I need 40 to 99 degrees, the stores just
dont sell 40 degree thermostats.

http://www.grainger.com/Grainger/items/4EY30



Posted by DerbyDad03 on November 2, 2007, 8:46 am
>
>
>
>
>
> > hall...@aol.com wrote:
wrote:
> > >>>>> I have an insulated garage that I want to heat, but just above
> > >>>>> freezing. ...
> > >>> Hook ANY heater to a timer?
> > >> If it's an electric heater, make sure the timer can handle such a load.
> > >> If it's a gas heater, use a setback thermostat?
>
> > > hook any electric heater to a cal stat thermostat, use a relay if
> > > necessary for higher current
>
> > >http://www.grainger.com/Grainger/wwg/productIndex.shtml?L2=Cal-Stat&o...
>
> > More suitable is probably the freeze-protection thermostat
>
> > <http://www.grainger.com/Grainger/wwg/productIndex.shtml?L2=Freeze+Pro...>
>
> > --
>
> Thanks
>
> This one covers the range I need 40 to 99 degrees, the stores just
> dont sell 40 degree thermostats.
>
> http://www.grainger.com/Grainger/items/4EY30- Hide quoted text -
>
> - Show quoted text -

This may meet the OP temperature specs, but it won't meet his other
requirements. The specs at the site say: "For Use With Gas, 24V
Electric Heat, Oil".

The OP is looking for a stand alone heater or a control for a
standalone heater that can be set for low temps, not a thermostat for
a furnace.


Posted by DerbyDad03 on October 31, 2007, 12:35 pm
> >> I have an insulated garage that I want to heat, but just above
> >> freezing. All the heaters I have will keep the temperature at 14C
> >> (57F) or higher, which I don't want. I just want it slightly above 0C
> >> (32F) to avoid the objects in the garage from freezing.
>
> >> Does anyone know of such a heater? I can't seem to find one.
>
> >> Thanks!
>
> Hook ANY heater to a timer?
>
> Steve

A heater on a timer can't maintain a given temperature unless the
outside temp is constant and you know the heat loss rate of the
garage. If it's 40 one day and -5 the next, how would a timer help
maintain a 33 degree temp?


Posted by Dave Martindale on October 31, 2007, 1:07 am
>I have an insulated garage that I want to heat, but just above
>freezing. All the heaters I have will keep the temperature at 14C
>(57F) or higher, which I don't want. I just want it slightly above 0C
>(32F) to avoid the objects in the garage from freezing.

>Does anyone know of such a heater? I can't seem to find one.

Look at electric baseboard heaters. These are normally supplied from
240 V, so you can get several kW of heat from ordinary 14 ga wiring.

Most makes of baseboard heaters seem to have auxiliary thermostats
that you can install inside the wiring box at one end of the baseboard
unit, with the temperature-setting knob sticking out through some kind
of knockout. If you look closely, you'll probably find that there are
two different models of this thermostat offered. One model has an "off"
position, allowing you to turn off the heater entirely. The other model
does not have an "off" position, and it's deliberately calibrated so
that if you set it to the minimum temperature, it will come on about 4
degrees C (about 39 degrees F). That's what you want.

        Dave

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