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

    Nov 21, 2008, 07:21 PM
    Thermostat for ht water baseboard
    Old thermostat was Honeywell 9141 T822c1124 vertical style for hot water baseboards all around, it is run from a boiler in the condo upstairs in boiler room, tried to replace with one that looks exactly the same , says Honeywell for heat only and is vertical with only 2 wires, same as old one but nothing happens when it is connected. It is CT50K, the old one had a mercury thing on top, new one does not. Have tried several now and am at wits end. Thank you
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 21, 2008, 11:28 PM
    Honeywell says your part number T822C is for cooling. They might be using it as a reverse acting thermostat on that system.

    http://customer.honeywell.com/techli...0s/69-0548.pdf
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