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

    Nov 23, 2007, 07:03 PM
    Steam Heat and Programmable Thermostat
    Are programmable thermostats compatible with steam heat systems? Seems like radiators are not getting hot enough. Air valves were replaced. Not sure why steam is not reaching radiators.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
    		  
    #2

    Nov 23, 2007, 09:46 PM
    If the old thermostat was a simple 2 wire one, connecting the 2 wires to RH and W should work. Otherwise, you may have to give some more details.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Nov 24, 2007, 04:45 AM
    Jump the thermostat out and let the boiler run. Then see if the radiators get hot. If they do the thermostat is the problem.

    Steam takes a different setting if you are using a digital thermostat.
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