Thermador PROFESSIONAL PRO GRAND Serie Instructions D'installation page 26

Four rangetop burners, (2) on the left side and (2) on the
®
right, feature the XLO setting that causes the flame to
cycle on and off when the knob is set to the XLO range.
This is normal operation.
Repeat these Ignition and Flame Test procedures for each
rangetop burner.
Yellow Flames:
Further Adjustment is
required.
Yellow Tips on Outer
Cones:
Normal for LP Gas
Soft Blue Flames:
Normal for Natural Gas
If the flame is completely or mostly yellow, verify that the
regulator is set for the correct fuel. After adjustment,
retest.
Some orange-colored streaking is normal during the
initial start-up.
Allow unit to operate 4-5 minutes and re-evaluate before
making adjustments.
When Flame is Properly Adjusted:
• There should be a flame at each burner port.
• There should be no air gap between the flame and
burner port.
Installation Instructions
Figure 31: Flame Characteristics
English 25