Vanguard VN1000BA Owner's Operation And Installation Manual page 19

INSPECTING
BURNER
Continued
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BURNER FLAME PATTERN
Figure 19 shows a correct burner flame pattern. Figure 20 shows an incorrect
burner flame pattern. The incorrect burner flame pattern shows yellow tipping of
the flame. It also shows the flame higher than 1/2 the glass panel height.
If yellow tipping occurs, your heater could produce increased
levels of carbon monoxide. If burner flame pattern shows yellow
tipping, follow instructions at bottom of this page.
Do not mistake orange flames with yellow tipping. Dust or other
fine particles enter the heater and burn causing brief patches of
orange flame.
(Model VN600B will be lower due to lower input rating)
Figure 19 - Correct Burner Flame Pattern
Figure 20 - Incorrect Burner Flame Pattern
If burner flame pattern is incorrect, as shown in Figure 20
• turn heater off (see To Turn Off Gas to Appliance, page 18)
• see Troubleshooting, pages 20 through 23
WARNING
WARNING ICON G 001
NOTICE
CORRECT FLAME PATTERN
AT HIGH POSITION
INCORRECT FLAME PATTERN
AT HIGH POSITION
1/2 GLASS HEIGHT
(Model VN1000BA)
Yellow
Tipping
1/2 GLASS HEIGHT
19