Making a blower work with a White Rodgers 50A55-405 Controller
The TRANE XE 80 has a White Rodgers 50A50-405 Controller. Two terminals presently go to the thermostat for heat control.
I wish to allow the Circulating Fan to be turned on/off independently with a separate switching device. The available Y-W-R-G-C terminals on the controllers have the W and R wires hooked to the thermostat.
Which terminals just control the Circulating Fan on that controller Y and G? It's not clear in my reading!
Thank you for your responses.
I believe the existing thermostat will allow me to activate the fan only for the purpose of moving the air to circulate heat from a fireplace insert; except that the four conductor 18 gauge wiring has been cut to two conductors. I can probably retrieve the other two on both ends, but, I need to know which two wires will allow me to OVERRIDE the heater circuitry (controller) to ONLY allow me to turn on/off the circulating fan.