Burner Adjustments; Flame Appearance And Sooting - Superior DRT6345TEN Installation And Operation Instructions Manual

INNOVATIVE HEARTH PRODUCTS • DIRECT-VENT GAS FIREPLACES (DRT6300/DRC6300) • CARE AND OPERATION INSTRUCTIONS

BURNER ADJUSTMENTS

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(QUALIFIED TECHNICIANS ONLY)

Flame Appearance and Sooting

Proper flame appearance is a flame which is
blue at the base and becomes yellowish-orange
in the body of the flame.
When the appliance is first lit, the entire flame
may be blue and will gradually turn yellowish-
orange during the first 15 minutes of operation.
If the flame remains blue, or if the flame is
orange with evidence of sooting (black tip), the
air shutter opening may need to be adjusted.
If the air shutter opening is closed too far,
sooting may develop. Sooting is indicated by
black puffs developing at the tips of very long
orange flames. Sooting results in black deposits
forming on the logs, appliance inside surfaces
and on exterior surfaces adjacent to the vent
termination.
Figure 71—Burner Flame Appearance
Sooting is caused by incomplete combustion
in the flames and lack of combustion air enter-
ing the air shutter opening. To achieve a warm
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yellowish-orange flame with an orange body
that does not soot, the shutter opening must be
adjusted between these two extremes.
Figure 72—Burner Flame Appearance
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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.