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    rbartelson1's Avatar
    rbartelson1 Posts: 1, Reputation: 1
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    #1

    Oct 14, 2010, 05:26 PM
    Two wire connection on a Honeywell thermostat(not color coded-both the same)
    I have two unmarked wires leading from my thermostat to the furnace(gas fired steam).How do I set up the wires with the labels listed as: o/b,y,r and g,w? Thanks in advance for any information. New thermostat is a Honeywell RTH2300B which is a 5/2 day programmable thermostat.
    haroldwages's Avatar
    haroldwages Posts: 1, Reputation: 1
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    #2

    Dec 7, 2011, 11:47 PM
    Honetwell code for their letters on their web site says Rh is hot wire to heater and W is heat relay or neutral. In any case it's ac in a remote circuit so it doesn't matter which ( Rh or W gets which wire) Just went through the same hassle myself with little help from other web sites. So one wire to Rh and one to W.
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