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

    Dec 1, 2013, 09:03 AM
    Rth 2300/rth221 thermostat
    I have a black wire and a red wire. I put the black wire in the B terminal and the red wire in the W terminal.I also removed the jumper from the R&RC terminals.
    This configuration works. But is it correct for a 2-wire install.The unit is running a gas fireplace.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
     
    #2

    Dec 1, 2013, 12:44 PM
    Red to r and black to w is the correct wiring.

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