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

    Oct 28, 2007, 10:28 AM
    How to connect Aprilaire 700 humidifier to gas furnace
    I installed Aprilaire 700 humidifier on my furnace - American Standard Freedom 90 Single Stage but I don't know where I can connect 24V from humidifier control panel in furnace.
    I'll appreciate your help.
    YP
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 29, 2007, 04:47 AM
    April air makes a voltage adapter that slips over one of the blower wires and acts like a switch to turn on the humidfier in the heat only position. It comes with instructions.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
    		  
    #3

    Oct 29, 2007, 06:36 AM
    If your furnace has a HUM terminal, it and Com will give you 24 volts when the blower is running.
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