Control box diagram
Part #HR54ZA006
Inducer & gas ctrl diagram
Part #HC21ZE126
Heat exchange & panel diagram
Part #HH18HA502
Inducer & gas ctrl diagram
Part #326633-401
Inducer & gas ctrl diagram
Part #327263-401
Inducer & gas ctrl diagram
Part #327264-401
Inducer & gas ctrl diagram
Part #305843-201
Main assy diagram
Part #HK06WC058
The manufacturer no longer makes this part, and there's no substitute part
Heat exchange & panel diagram
Part #326600-751
Casing diagram
Part #327260-401