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    appu30's Avatar
    appu30 Posts: 2, Reputation: 1
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    #1

    Mar 21, 2006, 11:58 AM
    Rplacing Weathertron thermostat with White Rodgers
    Hello,
    I have a heat pump with auxiliary electric heat controlled by a Trane
    Weathertron thermostat. I am attempting to upgrade the thermostat with a programmable White -Rodgers(1F85-277)heat pump thermostat.I want to verify the correct wiring hookup for White-Rodgers
    Thermostat to the current unit.

    The current hookup for the Weathertron controller is:

    Terminal "F" (color-none) Purpose-Not used,
    Terminal "B" (color-Blue) purpose-24 volt common
    Terminal "X2" (color-Black) Purpose-Emergency heat?
    Terminal "W" (color-White) purpose-First stage Aux. Heat,
    Terminal "T" (color-Tan 0 purpose- Outdoor Thermistor,
    Terminal "G" (color-Green)purpose-Fan,
    Terminal "O" (color-Orange) purpose-Reversing valve,
    Terminal "Y"(color-yellow) purpose-First stage compressor,
    Terminal "R" (color-Red) purpose-24 volt hot

    Please click on the following link for referenced terminal connections in the White-Rodgers(1F85-277) manual.

    http://www.white-rodgers.com/pdfs/in.../0037-6560.pdf

    Regards!
    Appu30
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
    		  
    #2

    Mar 21, 2006, 05:23 PM
    I lack experience with heat pumps, but it looks good to me. I others provided as much information in their question as you.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #3

    Mar 21, 2006, 05:47 PM
    I added the correct terminals that the wires should connect to below:


    Terminal "F" (color-none) Purpose-Not used,
    Terminal "B" (color-Blue) purpose-24 volt common C
    Terminal "X2" (color-Black) Purpose-Emergency heat? EW1
    Terminal "W" (color-White) purpose-First stage Aux. Heat, W2
    Terminal "T" (color-Tan 0 purpose- Outdoor Thermistor NOT USED
    Terminal "G" (color-Green)purpose-Fan,
    Terminal "O" (color-Orange) purpose-Reversing valve,
    Terminal "Y"(color-yellow) purpose-First stage compressor Y1
    Terminal "R" (color-Red) purpose-24 volt hot

    And I must say, nice job with the information and research!
    appu30's Avatar
    appu30 Posts: 2, Reputation: 1
    New Member
    		  
    #4

    Mar 22, 2006, 07:31 AM
    Thanks! I really appreciate your help, this came out very close what I thought.
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