Vanguard GVB50P Owner's Operation And Installation Manual page 24

INSPECTING
PILOT AND
BURNER
FLAME
Continued
24
Sharp Blue
Flame
Figure 20 - Correct Burner Flame Pattern
High
Yellow
Flame
Flame
Lifting
Off of
Burner
Figure 21 - Incorrect Burner Flame Patterns
If burner flame pattern is incorrect, as shown in Figure 21
• turn heater off (see To Turn Off Gas to Appliance, page 22)
• see Troubleshooting, pages 26 through 29.
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