Cleaning And Maintenance - Vanguard VFRMV18PA, VFRMV18NA, VFRMV24NA, VFRMV24PA Owner's Operation And Installation Manual

INSPECTING BURNERS
Continued
BURNER FLAME PATTERN
Figure 24 shows correct burner flame pattern.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles are burned
by heater, causing brief patches
of orange flame.
If burner flame pattern is incorrect, as shown in
Figure 25
• turn heater off (see To Turn Off Gas to Appli-
ance, page 17)
• see Troubleshooting, page 22
The flames from the burner travel horizontally
through the log set and emerge at the middle and
rear of the set against the back logs.
The flames are blue off the burner and as they
progress through the log set, change to a light
yellow color, yellow decorative flames are visible
as the flames exit the log set.
The base of the log set and the underside of the
top logs glow red. Natural gas models will burn
with more blue flame, while propane gas model
will burn with bright yellow flame.
Figure 24 - Correct Burner Flame Pattern
Figure 25 - Incorrect Burner Flame
20
Pattern
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