I have a honeywell HE240 whole house humidifier that I would like to hard wire to my furnace. I noticed on the control board there is a HUM-H and HUM-N terminal. Can someone tell me what the difference is between those? I have a red and white wires for the humidifier leading into the transformer that was provided but I would rather just wire it to the board of the furnace. Any help would be appreciated.