New home owner, I assume it is for my air circulation system but unsure how to use it to the best of its abilities. Does More Humid make the house more humid, or should I turn it to that setting when the house is humid to negate it?
It looks like a combination humidifier/dehumidifier as well as an outside air exchanger.
The air exchangers are nice as you can run them when the air outside is very cold or very hot, as they will retain a large portion of the interior air temperature, despite swapping your interior air for outdoor air. That specific feature seems like a sometimes thing, when you wouldn't normally have windows open for awhile, but you do want fresh air that day.