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jochla
Aug 17, 2009, 02:26 PM
The question I'm asking is whether or not a Mears 2- wire thermostat, circa 1985 that controlled electric baseboard heating elements, had a build in frost proof protection safeguard that would not allow heat to go below 40 or 50 degrees. Beige in color, round setting dial.
hvac1000
Aug 17, 2009, 02:43 PM
Exact model number?
jochla
Aug 20, 2009, 01:20 PM
Mears Model # M401
hvac1000
Aug 20, 2009, 01:46 PM
Sorry I show no listing in my electronic catalogue for that number but there is a M401-25 number but it offers no description.

I will say that most BB thermostats did not offer a specific setting for frost proofing. In most cases you would just turn it down to accomplish that.