Control box diagram
Part #1054735
Replaced by #90-244
Heat exchange diagram
Part #1070955
The manufacturer no longer makes this part, and there's no substitute part
Control box diagram
Part #1000742
Functional replacement parts diagram
Part #1071420
Blower assembly diagram
Part #1071613
Control box diagram
Part #1071063
Heat exchange diagram
Part #1071326
Heat exchange diagram
Part #1070173
Functional replacement parts diagram
Part #1070466
Non-functional replacement parts diagram
Part #1070378