by Mr Bill » Wed Feb 01, 2012 12:40 am
That is an "old" self contained 3-ton package unit, one cap is for the blower motor and one is for the condenser motor. I am actually a Ruud dealer, my guess/gut is the 3.5 is for the condenser motor, but just follow the wires from the cap and they will lead you to whatever motor the cap is related to. I bet that unit if it still has the original blower motor, it was probably only a two speed, one for cooling and one for heating, usually black for high and red for low.