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    franky ipde's Avatar
    franky ipde Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jan 29, 2009, 08:35 PM
    1f85-277 Thermostat
    Hi,

    I have a old W/R thermostat that I am replacing with a W/R 1f85-277.

    There are four wires coming out of the wall. Red, Green, Yellow, White.
    The red wire is connected to terminal RC. The green wire is connected to terminal G. The yellow wire is connected to terminal Y and the white wire is connected to terminal W. There is also a jumper wire from terminal RC to terminal RH. How do I go about wiring this new thermostat up? I have a single stage trane xl90 furnace.

    Thanks
    MarkwithaK's Avatar
    MarkwithaK Posts: 955, Reputation: 107
    Senior Member
    		  
    #2

    Jan 29, 2009, 08:39 PM

    Transfer the wires from your old stat to the coordinating terminals on your new stat.
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