I have an old Duo-Therm gas furnace that is used for heating a cabin in Michigan. Somebody tried to rewire it with speaker wire, and I'll give them an A for ingenuity, but an F for not doing it right. Short version is, I'm now stuck with a thermostat, a WR 90-113 fan control relay/transformer and 2 wires hanging out of the gas valve. I'm not sure there were schematics when this thing was originally made, but I know I don't like freezing my rear off and I really don't like frozen, busted pipes. Anyone point me in the right direction on the wiring hook up? I'm guessing the 2 wires hanging out of the gas valve are the high and low limit? Any help is greatly appreciated.
FYI, Google was no help.
Thanks in advance,