Inspecting Burner - Desa RFN28TB Owner's Operation And Installation Manual

INSPECTING
BURNER
26
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 29 shows a correct pilot flame pattern. Figure 30 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
Figure 29 - Correct Pilot Flame Pattern
Good Pilot-Nat. Port
Thermocouple
Bad Pilot-Nat. Port
Figure 30 - Incorrect Pilot Flame Pattern
If pilot flame pattern is incorrect, as shown in Figure 30
• turn heater off (see To Turn Off Gas to Appliance, page 25).
• see Troubleshooting, pages 28 through 31.
Pilot Burner
GRH/OV 007D
Pilot Burner
GRH/OV 007E
101934