Inspecting Burners; Pilot Flame Pattern; Burner Flame Pattern; Burner Primary Air Holes - Procom FBD400T-C User Manual

INSPECTING BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

1. Turn control knob to pilot position
2. Inspect pilot flame and refer to Figure 27 and 28.
·
Figure 27shows a correct pilot flame pattern.
·
Figure 28 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.
·
If the pilot flame is incorrect, as shown in Figure 27.
Turn heater off (see To Turn off Gas to Appliance, page 20) See troubleshooting, page 25-27.
Figure 27 -Correct Pilot Flame Pattern

BURNER FLAME PATTERN

Figure 29 shows a correct burner flame pattern. Figure 30 shows an incorrect burner flame pattern. If pilot flame
pattern is incorrect then:
·
Turn heater off (see "To Turn off Gas to Appliance," page 20).
·
See Troubleshooting, pages 25 through 27.
Figure 29- Correct Flame Pattern with
Control Knob Set to High Flame (5)

BURNER PRIMARY AIR HOLES

Air is drawn into the burner through the holes in the fitting at the entrance to the burner. These holes may become
blocked with dust or lint. Periodically inspect these holes for any blockage and clean as necessary. Blocked air holes
will create soot.
Figure 28 -Incorrect Pilot Flame Pattern
Figure 30 - Incorrect Flame Pattern with
Control Knob Set to High Flame (5)
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