Main assy diagram
Part #325531-403
Heat exchange & panel diagram
Part #327258-404
Inducer & gas control diagram
Part #305843-201
Part #HT01BC116
The manufacturer no longer makes this part, and there's no substitute part
Inducer & gas control diagram
Part #326633-401
Control box diagram
Part #326701-401
Blower diagram
Part #HT08AH115
Main assy diagram
Part #325889-401
Door,vent & safeguard assy diagram
Part #326723-753
Blower diagram
Part #327567-701