differential temperature controller for attic fan [RE-wrenches]

[Bob-O Schultze, Electron Connection]

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Kurt,
If you can use a standard 12" or 16" vertically mounted fan, you can 
buy them at Lowes, Home Despots, and most electrical supply houses 
with a thermostat already attached. They usually sell a set of 
matching louvers that open via the force of the fan and close by 
gravity as well. Pretty cheap. Add a wall switch in some convenient 
place and you've got your remote. No way to reverse the flow, but why?
Good Luck, Bob-O

>I'm looking for a simple differential temperature controller to 
>manage an AC-powered attic fan.  I'd like to find a way to switch 
>the unit between Summer, Winter, and off remotely.
>
>The Goldline GL-30 has more features than we really need and I don't 
>see a simple way to reverse the logic for Winter (short of moving 
>the load from NO to NC.)
>
>Yes, I could build one, but I'd rather have a listed product since it's AC.


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