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43D0122 23
FLAME APPEARANCE
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. Refer to Figure 18 for correct pilot fl ame.
If the pilot fl ame does not touch the thermocouple, then the main burner cannot function reliably. Refer to Figure
19 for incorrect shape of pilot fl ame.
MILLI-VOLT CONTROL
Figure 18 - Correct Appearance of Pilot Flame
Figure 19 - Incorrect Appearance of Pilot Flame
Thermocouple
for Natural
Thermocouple
for LP
Thermocouple
for LP
Thermocouple
for Natural