Desa Variable Manually-Controlled Models Owner's Operation And Installation Manual page 27

INSPECTING
BURNERS
Continued
103281
FRONT BURNER FLAME PATTERN
Figure 33 shows correct front burner flame pattern. Figure 34 shows incorrect front
burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of
blue flame.
If front burner flame pattern shows yellow tipping, your fireplace
could produce increased levels of carbon monoxide. Follow instruc-
tions at bottom of this page. Yellow flame on rear burner is normal.
Do not mistake orange flames with yellow tipping. Dirt or other
fine particles are burned by fireplace, causing brief patches of
orange flame.
CORRECT FLAME PATTERN AT HIGH POSITION
Figure 33 - Correct Front Burner Flame Pattern
INCORRECT FLAME PATTERN AT HIGH POSITION
Figure 34 - Incorrect Front Burner Flame Pattern
If front burner flame pattern is incorrect, as shown in Figure 34
• turn fireplace off (see To Turn Off Gas to Appliance, page 23 [Thermostat-
controlled models} or page 25 [Manually-controlled models])
• see Troubleshooting, pages 28 through 31
WARNING
WARNING ICON G 001
NOTICE
Yellow
Tipping
At Top
of Blue
Flame
27