Inducer & gas ctrl diagram
Part #331930-751
Replaced by #LH33ZS004
Control box diagram
Part #HR54ZA006
Control box diagram
Part #HK42FZ051
Replaced by #HK42FZ064
Main assy diagram
Part #661858
Main assy diagram
Part #HK06WC058
The manufacturer no longer makes this part, and there's no substitute part
Heat exchange & panel diagram
Part #KA56GR140
Inducer & gas ctrl diagram
Part #326643-703
Door & vent diagram
Part #HH18HA493
Inducer & gas ctrl diagram
Part #EF33CW180
Inducer & gas ctrl diagram
Part #HC21ZE126
The manufacturer no longer makes this part, and there's no substitute part