Still finding interesting things in this house ... latest is an unconnected wire from the Superior (HC-4320a) gas fireplace ... has a FAK-1500 fan kit, glass doors, etc.
Only checked out the gas running ops when did inspection and didn't hear fan - figured it was thermostatically controlled. No switch anywhere for it.
I hooked up the 14/3 cable to a circuit to test it ... fan came on and stayed on ... haven't taken the thing apart, yet ...
Bad thermostatic sensor?
Can find any installation instruction anywhere online.
Thanks for comments!