Pilot And Main Burner Flame Characteristics - White Mountain Hearth VSM-18-1 Installation Instructions And Owner's Manual

PILOT AND MAIN BURNER FLAME CHARACTERISTICS

Pilot Flame Pattern (Figure 9)
Figure 8 shows a correct pilot flame pattern. The correct flame will be blue and will extend beyond the thermocouple/thermopile. The
flame will surround the thermocouple/thermopile just below the tip. A slight yellow flame may occur where the pilot flame and main
burner flame meet.
After use, cleaning of the pilot burner may be required for the proper flame. The pilot orifice can be cleaned with high pressure air or by
placing under running water. Pilot orifice must be dry before replacement. Use a pipe cleaner to clean inside the pilot after the pilot orifice
has been removed.
To Remove Pilot Orifice
1. Disconnect the pilot supply line at the pilot burner.
2. Remove pilot orifice from pilot burner. It may be necessary to tap on pilot burner in order to remove the pilot orifice.
Pilot Flame Pattern
Figure 9
If pilot flame pattern is incorrect
• See Troubleshooting, page 15
Main Burner Flame Pattern
The main burner flame will be completely yellow.
Main Burner Flame Ignition and Extinction
When the main burner is ignited it will take a few seconds for the full flame pattern to develop.
When the main burner is extinguished it will take a few seconds for the flames to disappear. It is normal to have the flames burn down
near the rock wool, as the remaining gas is burned.
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