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

    Dec 29, 2009, 04:04 PM
    Help installing honeywellRTH221
    Someone hooked up our new honeywell thermostat and it did not work properly, only worked when you turned the fan to auto. We do not have a fan. We only have heat, boiler, what is called gravity heat I think. The person who hooked it up had one wire going to the Y terminal and one going to the G terminal. After finding out that the G terminal controls the fan I decided it was hooked up wront. So I hooked up the wire that was going to the y term. To RH and the wire that was going to G to W is this o.k.
    Will this cause a problem?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #2

    Dec 29, 2009, 05:57 PM

    <Moved from Elec and Lighting>

    For a two wire heat system and no fan, use W and Rh would be correct.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #3

    Dec 29, 2009, 06:02 PM
    Quote Originally Posted by dlynnmac View Post
    Will this cause a problem?
    Yes. Your utility bill will increase due to the heating system working. :D
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