AERCO KC Standard to Low NOx Convertion Instructions - Manual (Page 16)

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Figure 14. Installation of Combustion Chamber Liner
NOTE
The next item to be installed is the new Low NOx Burner Assembly provided
in the Conversion Kit. To simplify installation and avoid component damage, it
will be necessary to temporarily remove several components from the Low
NOx Burner Assembly.
3. Remove the new Low NOx Burner from the Conversion Kit. Refer to Figure 15 and temporarily
remove the following components and assemblies from the Low NOx Burner:
(a) Remove the Igniter and Flame Detector Assemblies.
(b) Remove the 1/8” NPT nipple and the 1/4” O.D. tubing from the Burner Shell.
(c) Loosen the top screw on the two-way connector and slide it off the ground stud.
(d) Remove the 10-32 hex nut from the ground stud.
(e) Remove the two bolts securing the Burner Head to the Shell.
(f) Separate the Burner Head from the Burner Shell.
(g) Proceed to step 4.