Noritz EZTR50 - Page 15

Heat Exchanger Replacement Procedure
Diagram
14. Exhaust Duct Replacement
(1) Put the heat exchanger assembly upside down on
something with the height of 6 inch (150 mm) or more.
Without support, the chamber and Exhaust Duct
can be damaged.
(2) Set Gasket-Exhaust Duct to match the line inside
the secondary heat exchanger.
At this time, make sure that the black side of
Gasket-Exhaust Duct comes to the top
as shown in the figure.
(3) Attach Exhaust Duct to the secondary heat exchanger and
fix with 15 screws(M4×12).
(4) Only NRCB199DV/NRCB180DV
Attach Mounting Plate-Circuit Board to the new Exhaust
Duct and fix 2 screws(M4×12).
Page 15
Procedure
(1)
(2)
e.g. EZ111DV
6 inch (150 mm)
or more
Attach Exhaust Duct
e.g. EZ111DV
(3)
e.g. NRCB199DV
Mounting Plate
-Circuit Board
(4)