I have a technical question about the new nest t-stat. I have a Honeywell steam humidifier and I would like to buy the new nest thermostat, I was wondering how to wire the humidifier to the new nest t-stat? and I would like to humidified the house even if the heat is not on, also want the humidifier to come on only if the fan is on; Can you please help. I have a PDF file link to my humidifier and to the nest wiring Thank you in advance.
NB : (OPTION 4: VisionPRO IAQ without Fan Delay) is the way my furnace is wired.