Thermador PRD36 - Manuel (Page 29)

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Test Flame: High Setting. Turn burner on to HI. See Figure 16 for appropriate
flame characteristics.
If any of the rangetop burners continue to burn mostly or completely yellow, verify
that the burner cap is positioned properly on the burner base, then retest. If flame
characteristics do not improve, call Thermador®.
Test Flame: Low Setting. Turn burner on to SIM. Verify that the flame completely
surrounds the burner. There should be a flame at each burner port and there should
be no air gap between the flame and the burner. If any burners do not carry over,
call Thermador®.
The two rangetop burners on the left side feature XLO®, causing the flame to cycle
on and off when the knob is set to the XLO range. This is normal operation.
Repeat the Ignition and Flame Test procedures, described above for each rangetop
burner and the grill burner (if so equipped).
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.
The gas grill uses a tube-style burner that has an air shutter which allows adjust-
ment to the amount of primary air inside the burner tube.
Air shutters of tube-style burners are pre-adjusted at the factory, and usually do not
require readjustment except under rare conditions such as installation at high alti-
tude.
If grill burner/flame adjustment is required, go to the procedure: "Flame Adjustment
(if necessary)".
Flame Adjustment (if
necessary): Tube-style gas burners used in Thermador© appliances have air shutter systems
which are similar to the illustration in Figure 17, and can be adjusted using the fol-
lowing method (unless adjustment is not recommended). It is necessary to remove
the burner from the appliance in order to perform air-shutter adjustments.
• Loosen shutter screw(s) and turn shutter to new position.
Figure 16: Flame Characteristics
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.