Control box assy diagram
Part #HN51JD024
The manufacturer no longer makes this part, and there's no substitute part
Burner assy diagram
Part #48GS400192
Control box assy diagram
Part #HT01BD209
Gas section diagram
Part #50SS500879
Accessory economizer diagram
Part #9901-0183
Part #48GS500248
Front view/grille option/rear view diagram
Part #48GS400314
Indoor fan motor/blower assy diagram
Part #HC98ZZ250
Front view/grille option/rear view diagram
Part #313974-751
Evap top view diagram
Part #48GS400244