Vanguard Heating VMH10TN - Manual (Page 22)

22
103670
INSPECTING
BURNER
Thermocouple
Pilot Burner
Figure 23 - Correct Pilot Flame Pattern
Thermocouple
Pilot Burner
Figure 24 - Incorrect Pilot Flame Pattern
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pattern. Figure 24 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 fireplace will
shut down.
If pilot flame pattern is incorrect, as shown in Figure 24
• turn fireplace off (see To Turn Off Gas to Appliance, page 21).
• see Troubleshooting, pages 24 through 27.