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Old 07-06-10, 12:54 AM   #3
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Join Date: Jan 2010
Location: Evansville IN
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I'm still getting things squared away. Here is where I got the snap switches.
Fan and Limit Controls
Snap Disc Fan Controls , Fan Controls , White Rodgers Fan Controls -

Since I'm using Firestone 45 mil EPDM Pond Liner, I need to keep the temp limited to 140F to get long life from the liner.

Need to base the temp control on what your water storage container can tolerate.

I plan to use a bi-metal snap switch to set off an alarm (a 12v light) if the temp gets to high.

Hope to go this rout, later on with a differential thermostat controller
12 Volt Differential Thermostat Controller
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