Thermador PCG305W Installation Instructions Manual page 18

Test Rangetop Burners
Test Burner Ignition. Select a rangetop burner knob. Push
in and turn counterclockwise to HI. The igniter will
produce a clicking sound. Once the air has been purged
from the supply lines, the burner should light within four
(4) seconds.
Test Flame: High Setting. Turn burner on to HI. See
figures below 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 re-test. If flame
characteristics do not improve, call Thermador service.
Test Flame: Low Setting. Turn burner on to LOW. 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 service.
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.
Page. 17
The burners that feature XLO
on and off when the knob is set to the XLO function. This
is normal operation.
Repeat the Ignition and Flame Test procedures described
above for each rangetop burner.
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.
Call Thermador service if:
• Any of the burners do not light.
• Any of the burners continue to burn yellow.
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, cause the flame to cycle