I have a Goodman gmpn080-4 furnace and am installing a Skuttle 190-1 humidifier. Where do I wire the two wires from the humidistat to the furnace? I see a 24v HUM screw on the board, but not sure where to place the other wire.
Connecting one wire to HUM and the other to ground worked for us. I believe this is the solution for this furnace, as 'C' (Common) is usually recommended, but this model does not have a connection for that.
The other wire goes to what is called 'common', 'c' for short.
Couldn't you just check furnace wiring schematics for "C" common port? Just plug other wire (other than HUM to C area. Right?
Does a common "C" matter to voltage? Such as 24 volt to 24 volt common. Thx