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    xhwang's Avatar
    xhwang Posts: 1, Reputation: 1
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    #1

    Oct 28, 2007, 05:42 AM
    Wiring humidifier
    I need help for wiring the honeywell HE365b humidifier to bryant 355AAV furnace. I tried the all that I can do, but still it just does not work. Any thought will be helpful. Thanks
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #2

    Oct 28, 2007, 11:00 AM
    My 331AAV has a HUM terminal at the far right of the terminal strip. Connecting to it and com gives you 24 volts for the humidifier. If it needs 120 volts, connect the 24 volts to the coil of a relay.
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #3

    Oct 28, 2007, 05:34 PM
    That style of humidifier has its own transformer so you do not connect 24v from the furnace to it. The low voltage wires connect to the humidistat(that should have came with it.) you only want it o run if the furnace is on. With out adding a relay the easy way is to cut the end of the power cord off at the plug and hook it up at eac1 and eac2 on the control board on the furnace. It will power it up when the blower comes on. The only down fall is it can also power up in the cooling mode also if the humidistat is set high.
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