The manufacturer's shipping box indicated that the Belmont has a three-speed reversible fan function. I had the fan installed, but after installation I cannot find any way to reverse the direction of the rotation. How is it done?

The rrevese button is usually located on the side of the housing. It is just a small rectangular slide switch. Does this unit have a factory installed remote?

I will concur with Ballenger. Either the reverse feature is on the fan body somewhere (sometimes hidden inside the light or on top of the motor) or it is on the remote.