Wiring humidifier to furnace without HUM connection?

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Old 12-02-18, 10:29 AM
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Wiring humidifier to furnace without HUM connection?

I have a Honeywell 260 humidifier mounted to Lennox furnace (I believe it's 80MGF model). Problem that I'm having is that humidifier will open water solenoid even though the fan on the furnace is OFF. Humidifier that I'm using has a "sail" to detect the air flow and I was wondering if I could bypass the sail and wire the humidifier directly to furnace control board to work only if the HEAT/FAN is on. My problem is that there is no dedicated HUM connection on the furnace board, can it still be wired to the board?
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Matt
 
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Old 12-02-18, 02:28 PM
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The model you posted is the family group. The full model is inside on the sidewall near the burner.
Post the part number off the control board.

Either way...... in order to connect to the furnace....... you will need a 24vAC relay.
 
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