Desa Tech 28, 18 installation manual Inspecting Burner, Pilot Flame Pattern

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INSPECTING BURNER

Check pilot flame pattern and burner flame pattern often.

PILOT FLAME PATTERN

Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

Thermocouple Pilot Burner

Figure 18 - Correct Pilot Flame Pattern

Thermocouple Pilot Burner

Figure 19 - Incorrect Pilot Flame Pattern

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