Tempstar Furnace Wiring Diagram - Page 3 - Wiring Diagram And Schematics tempstar gas furnace connection diagram tempstar furnace rh parsplus co Keeprite Furnace Model Numbers Keeprite AirTempstar Wiring Schematic - York Hvac Serial and Model Number York hvac had two different serial numbers for 1971 through 2004 and 2005 through the present day. Old Serial Number. 97 thoughts on “ Start and Run Capacitor Explained ” david October 1, 2018. Can I ask some question, because I am not very sure? What happen if hvac air compressor start wire is connected to the Fan terminal of capacitor? or connected to the large then system require herm terminal of capacitor (ex: system need 35 uf, but connect to 60uf)?.