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    Eurious2's Avatar
    Eurious2 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 17, 2007, 03:27 AM
    Wiring Diagram for heat pump with gas furnace
    75,000 BTU Concord furnace with 2 ton heat pump.. Chromatherm Thermostat and when the heat comes on both the heat pump and gas furnace are running... How do I correct the wiring malfunction so the heat pump initially comes on and the gas furnace comes on when the pump can't keep up or in the event of an emergency??
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    May 17, 2007, 12:02 PM
    Buy a Honeywell 8000 series T stat. It has provisions for a duel fuel system that you have . Follow the directions and it is a piece of cake to hook up.
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