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

    Jan 20, 2008, 07:36 AM
    Wiring a honwell rth7500d thermostat
    My old magic stat thermostat is wired as follows

    Red and yellow wire both to R terminal with jumper inplace for rc

    Balck and green wire both to W

    The directions for the new thermostsat says no 2 wires to the same terminal
    Can any one help, I am a little confused...

    I have a conventional oil burner heating system.

    Thanks
    Larry:mad:
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Jan 20, 2008, 05:35 PM
    The Rc and Rh get jumpered for homes with AC and only one transformer on the furance. Please clarify the colors coming out of the wall, name each wire.
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