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    sito's Avatar
    sito Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Sep 20, 2009, 10:50 AM
    Digital thermostat installation
    I am currently trying to install a digital thermostat. The old one has two wires coming out of the wall, one red and the other white but are not labeled. On the digital thermostat the connections are: Y, G, RH, RC, & W. which wire goes where?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Sep 20, 2009, 11:14 AM
    If this is a heat only unit use RH and W. I hope the thermostat will work on battery only since you have no extra wire for a C common leg. COLOR wire placement is simple RH to Red and W to White. It actually will not make a difference since you only have two wires to start with. All of this should be in the owners/install manual.
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