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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 Fig. 32 and 33.
• Fig. 32 shows a correct pilot flame pattern.
• Fig. 33 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 Fig. 33, turn heater off (see “To Turn Off Gas to
Appliance, " page 20). See Troubleshooting, page 27 - 29.
Fig. 34 - Correct Pilot Flame Pattern with Control
Knob Set to High Flame (5)
Fig. 35 - Incorrect Pilot Flame Pattern with Control
Knob Set to High Flame (5)
BURNER FLAME PATTERN
Fig. 34 shows a correct burner flame pattern. Fig. 35 shows an incorrect burner flame pattern.
• If burner flame is incorrect, as shown in Fig. 35, turn heater off (see “To Turn Off Gas to
Appliance”, page 20).
• see Troubleshooting, pages 27 through 29.
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.
Fig. 32 - Correct Pilot Flame Pattern
Fig. 33- Incorrect Pilot Flame Pattern
More than 8 in. above top of logs
Approx. 3-6 in. above top of logs
Summary of Contents for CRHFD400RT-M-M
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