Vanguard Heating VMH10TNA - Manual (Page 19)

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OWNER’S MANUAL
BURNER FLAME PATTERN
Figure 32 shows a correct burner flame
pattern. Figure 33 shows an incorrect burner
flame pattern. The incorrect burner flame
pattern shows the flame consistently higher
than one inch above the log.
If burner flame pattern is incorrect, as shown
in Figure 33
• turn fireplace off (see To Turn Off Gas to
Appliance, page 18)
• see Troubleshooting, pages 20 through 22
Figure 32 - Correct Burner Flame Pattern
Figure 33 - Incorrect Burner Flame Pattern
Top of Flame Consistently About
One Inch Higher Than Logs
Top of Flame About
One Inch Below Logs
INSPECTING
BURNER
Thermocouple
Pilot Burner
Figure 30 - Correct Pilot Flame Pattern
Thermocouple
Pilot Burner
Figure 31 - Incorrect Pilot Flame Pattern
Check pilot flame pattern and burner flame
pattern often.
PILOT FLAME PATTERN
Figure 30 shows a correct pilot flame pattern.
Figure 31 shows an incorrect pilot flame
pattern. The incorrect pilot flame is not touch-
ing the thermocouple. This will cause the
thermocouple to cool. When the thermo-
couple cools, the fireplace will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 31
• turn fireplace off (see To Turn Off Gas to
Appliance, page 18)
• see Troubleshooting, pages 20 through 22