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    Centurionmech's Avatar
    Centurionmech Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 21, 2008, 06:26 AM
    Installing the Hoeywell RTH3100C
    I currently have a Goodman system with emergency heat. The system is about 12 years old. The thermostat I currently have on it is a "LUX" PSMH45 LHP750 Mercury type. The way it is hooked up to the "LUX" is as follows: (This works Good I want to change to digital)

    E - Brown
    G - Green
    Y - Yellow
    R- Red
    X - Blue
    O - Orange
    2 - White
    B - Black

    _________________________

    I want to install a Honeywell RTH3100C which I purchased. Below I have listed the terminal lugs can you please indicate which color wire to place on the lugs?

    E -
    AUX -
    Y -
    G -
    O -
    L -
    R -
    B -
    C - (This indicates is optional with batteries) What does that mean?

    Thank you fro your assistance

    Mike
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 21, 2008, 10:46 AM
    Sorry your instruction manual was missing from your thermostat box. Below I have included a electronic version for you. Follow the directions exactly and you should have no problems.

    http://customer.honeywell.com/techli.../69-1889EF.pdf
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