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    joneo99's Avatar
    joneo99 Posts: 2, Reputation: 1
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    #1

    Nov 3, 2010, 05:55 PM
    Honeywell RTH6350D
    I'm installing a Honeywell RTH6350D thermostat. I'm replacing an old thermostat with mercury and only two wires connected to it. Unfortunately, these two wires are not labeled. How would I hook them up to the new thermostat.
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #2

    Nov 3, 2010, 06:49 PM

    One to r one to w
    johnnyfive's Avatar
    johnnyfive Posts: 1, Reputation: 1
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    #3

    Nov 30, 2010, 07:01 PM
    This worked! I also only had two wires and after spending over an hour and a half of following directions in the manual and every combination of Y, R, Rc, and jumper, I finally got smart and just looked it up online. So for anyone else, just connect one wire to R, the other to W and I also removed the jumper between R and Rc. Just fyi.

    Thanks!
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