Bosch Dual Fuel HDI8054 Serie Manuel D'installation page 21

3. Once the air has been purged from the supply lines,
verify that the burner lights within four (4) seconds.
After burner lights, turn knob to the off position.
4. Test each rangetop burner in this fashion. Call Service
if any of the burners do not light.
Test flame characteristics on the low setting:
1. Push in and turn the knob to the flame symbol until the
burner ignites.
2. Turn knob quickly to the low setting.
3. Verify that the flame is:
• A minimum height (approximately 1/4" or 6 mm).
• Steady (The flame should not go out, lift or blow off
of the burner. It should carry over, or surround, the
entire burner.)
• The right color. It should be blue with an inner and
outer cone. See Figure 24: Checking Flame Char-
acteristics for more information.
4. Test each rangetop burner in this fashion. If any flame
goes out, does not carry over properly or is too large,
contact service.
Test flame characteristics on the high setting:
1. Push in and turn the knob to the flame symbol until the
burner ignites.
2. Turn knob to the high setting.
3. Verify that the flame is:
• Steady (The flame should not go out, lift or blow off
of the burner. It should carry over, or surround, the
entire burner.)
• The right color. It should be blue with an inner and
outer cone. See Figure 24: Checking Flame Char-
acteristics for more information.
4. Test each rangetop burner in this fashion. If any flame
burns yellow or does not carry over properly, contact
service.
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 yellow streaking is normal during the initial start-up.
Allow unit to operate 4-5 minutes and re-evaluate.
When correct color, carryover and size are verified, the
burner testing is complete.
If any of the tests do not result as explained above, contact
Bosch service for assistance. Otherwise, the installation is
complete at this time.
English 18