Bradford-White Corp MI403S, CX), M1XR403S*FCX, MI50L, MI504S, MI60T, MI40T, MI404T Burner Cleaning

SERVICE PROCEDURE RG-VI

Burner Operation Inspection, Adjustment

Cleaning and Replacement

BURNER CLEANING (Cont.)

Step 5. Disconnect (unscrew) Main burner (stamped steel “B” burner) from main burner orifice or on cast iron burners (“C” burner), loosen air shutter & disconnect (unscrew) feedline from burner.

Step 6. Remove main burner orifice from feed line (½” wrench on steel burner, 3/8" wrench on cast iron). Inspect and clean if necessary.

Step 7. Remove pilot assembly, refer to SERVICE PROCEDURE RG-III for cleaning and inspection.

Step 8. Reassemble burner.

Step 9. Inspect combustion chamber area of heater prior to reinstallation of burner assembly. If cleaning is required, refer to SERVICE PROCEDURE RG-VIII.

Step 10. Reinstall burner assembly into combustion chamber, reconnect feedline, thermocouple and pilot tube to the combination thermostat/gas valve.

Step 11. Reinstall inner door per SERVICE PROCEDURE RG-I, steps 4 through 13.

Step 12. To resume operation, follow the instructions located on the lighting instruction label or the lighting instructions located in the installation and operation manual.

20