Procedure
16. Replace assembly back inside case
(1) Locate hooks on top of SS HE (See
Blown Up View)
(2) Locate notches on top of water
heater case.
(3) The hooks from the heat exchanger
will help align and hold assembly in
place
(4) Secure bottom burner screws
(5) Secure top left and right screws
Diagram
Page 12