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How do I hook up a programmable thermostat?
Hello,
I am attempting to install a programmable thermostat. My existing thermostat is a little dated (its one of the old mercury based ones) and the manual for the new one isn't much help. What I can tell is that it seems to be 4 wire, but the wires are blue, yellow, beige and white. They are currently hooked up where the blue, yellow and beige are hooked up to the mercury (from top to bottom, in that order) and the white one appears to be some kind of jumper. The yellow wire is connected at the other end to a dial that would indicate what the temp is.
My existing HVAC system is a hydro-heat based system with an AC unit, so a 4 wire hookup makes sense. I'm just having trouble translating these colors into what the manual says they should be. The new one is a Rite Temp model 6025.
I have attached a photo of what I am looking at.
Any help would be greatly appreciated. Thank you very much!