Thermador PRD486EDG Installation Instructions - Page 22

Step 9: Burner Test and Adjustment Flame Adjustment (if necessary): Tube-style gas burners used in Thermador© appliances have air shutter systems which are similar to the illustration in Figure 15, and can be adjusted using the following method (unless adjustment is not recommended). It is necessary to remove the burner from the appliance in order to perform airshutter adjustments. • Loosen shutter screw(s) and turn shutter to new position. • Adjust the shutter to more-closed position if the flame is lifting or blowing, or is not carrying over. Adjust the shutter to more-open position if the flame is too yellow. (See Figure 15.) • Retighten the shutter screw(s). • After adjustment, reinstall the burner and perform flame evaluation. The air shutter must fit over the orifice hood for proper operation of the burner. • Repeat procedure as needed until flame characteristics are acceptable. (See Figure 14). FIG. 15 Air Shutter Adjustment (if necessary) WARNING Burner adjustments must be performed by a qualified technician. Improper adjustments may cause harmful by-products or void the appliance's warranty. Allow burners to cool before attempting to remove them! Call Thermador® if: 1. Any of the burners do not light. 2. Any of the burners continue to burn yellow. More Open: Less Yellow Flame Screw Air Shutter More Closed: Less Blue Flame More Carryover Less Lifting or Blowing 19