Service Manual

UTTW SERVICE PROCEDURE II

Burner Operation Inspection,

Cleaning and Replacement

Page 18

Step6. Disconnect (unscrew) manifold brackets from main

burner orifices.

Step7. Remove main burner orifice from feed line (1/2"

wrench). Inspect and cleanifnecessary

Step8. Remove pilot assembly, ref

erto SERVICE PROCEDURE III for cleaning and inspection.

Step9. Reassemble burner.

Step 10. Reinstall burner and inner door per SERVICE PROCEDURE I, steps 5 through 16.

Step 11. To resume operation, follow the instructions locatedonthe ligh

ting instruction labelorthe lighting

instructions locatedinthe installation and operation manual.

Burner Cleaning (Continued)

Step4. Thoroughly inspect burnerscreen and burner venturis and removeany loose debris accumulation. Inspect

burnerscreenfor any openings largerthan the normal screenopenings

Step5. Use compressed air and/or a vacuum to removeany scale or other debris accumulation from the burnerscreen

and venturis.

Burner Screen

Burner Venturis

Manifold Brackets

Main Burner Orifices