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    twcmark's Avatar
    twcmark Posts: 1, Reputation: 1
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    #1

    Aug 25, 2009, 08:02 PM
    Janitrol hpt 1860
    My 1860 has the Yellow,Green,red,orange,W2,E,C.

    Once upon a time it was hooked up to an oil furnace and a central air, now it is hooked to a central heating and air unit.

    I am replacing it because it has old mercury switches, and wanted to go digital, I chose a Hunter 44110 which have G,RC,RH,Y,W... RC & RH are jumpered, What I need to know is what wires are used, and what colors connect to which posts, I haveseven wires that were connected to the old, but connecting to the new has proposed a challenge... Help
    sparky47's Avatar
    sparky47 Posts: 2, Reputation: 1
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    #2

    Aug 25, 2009, 09:07 PM
    Look at the low voltage connections on both outdoor unit and indoor unit and wire your t-stat accordingly. Also check wiring diagram it should be on the indoor unit or on outdoor unit. Hope this helps.
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