Flame Appearance - Vermont Castings DFS3224A Installation And Operating Instructions Manual

Flames from the pilot, front and rear burner should be visually checked as soon as the heater is installed.
In addition, periodically check the fl ames visually during operation.
CHECKING THE PILOT FLAME
The pilot fl ame must always be present when the heater is in operation. It should just touch the top of the
thermocouple tip for natural. See Figures 25 and 27 for correct pilot fl ame.
If the pilot fl ame does not touch the thermocouple, then the main burner cannot function reliably. See Figures 26 and
28 for incorrect shape of pilot fl ame.
THERMOSTAT AND MILLI-VOLT CONTROL
Thermocouple
for Natural
Thermocouple
for LP
Figure 25 - Correct Appearance of Pilot Flame
MANUAL AND HI/LO CONTROL
Thermocouple
for Natural
Thermocouple
for LP
Figure 27 - Correct Appearance of Pilot Flame
26D3310
Thermocouple
for Natural
Thermocouple
for LP
Figure 26 - Incorrect Appearance of Pilot Flame
Thermocouple
for Natural
Thermocouple
for LP
Figure 28 - Incorrect Appearance of Pilot Flame

FLAME APPEARANCE

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