How can I add fan control for my thermostat
I used to have a covensional 2 wire mercury thermostat and have recently upgraded to a digital thermostat that supports more options including being able to turn the fan on automatically.
I want to be able to turn just the fan on and not the whole furnace so I can get better air circulation in my home without heating it more.
Now I have an old standing pilot system that had the old pull button on the furnace that has been removed before I moved in on the box inside the furnace panel.
I want to be able to turn it on from the thermostat itself now
I know I may have to wire an additional wire down the wall which isn't a problem but it's a 24 volt thermostat and I want it turn on the 120 v fan so I can't exacly connect that wire directly into the end that is past the relay. Looked at the fan on/off relay that turns on the fan when the plenum gets hot and turns it off when it gets cooler... is there a way to wire it into that as from what I can tell it's the only thing controlling the fan at this point so I would need to get it to activate it
Thanks