Furnace · 2 diagram sheets · 5 parts · by Andrew Strick, mobile RV technician
OEM exploded parts diagrams for the Suburban Sf Series SF20QA RV furnace: 5 manufacturer part numbers.
The rating plate is on the furnace chassis — slide the unit's front panel off or look just inside the exterior access door. Suburban models (SF-30F, NT-34SP …) changed burners and boards over the years, so the serial number's date range matters as much as the model.
