I have a uniques building that requires a 3 Ton SCAV unit to be hung in the ceiling. I am having trouble locating a unit to replace the failed existing Fedders. Fedders product line does not show a SCAV unit. This unit is 208/230 single phase, cooling only, with supply/ return duct connections and condenser in/ out connections. This is obviously an air to air unit. R-22 or R-410. Do you have any suggestions. Measurments are approximately 42" w x 46" d x 24" h. Thank You for your help.