Inspecting Burners - Firewerks VFRMV18NA Owner's Operation And Installation Manual

INSPECTING BURNERS

Check pilot fl ame pattern and burner fl ame patterns often.
PILOT FLAME PATTERN
Figure 22 shows a correct pilot fl ame pat tern. Figure 23 shows an incorrect
pilot fl ame pattern. The incorrect pilot fl ame is not touch ing the thermo couple.
This will cause the thermo couple to cool. When the thermo couple cools, the
heater will shut down.
If pilot fl ame pattern is incorrect, as shown in Figure 23
• turn heater off (see To Turn Off Gas to Appliance, page 15 (Remote-
Ready Models])
• see Troubleshooting, pages 19 through 21
Note: The pilot fl ame on natural gas units will have a slight curve, but fl ame
should be blue and have no yellow or orange color.
Pilot Burner
Figure 22 - Correct Pilot Flame Pattern (Your pilot may vary from pilots
shown)
Figure 23 - Incorrect Pilot Flame Pattern (Your pilot may vary from
pilots shown)
114745-01
Thermocouple
For more information, visit www.desatech.com
BURNER FLAME PATTERN
Figure 24 shows correct burner fl ame pattern.
NOTICE: Do not mistake orange fl ames with yellow tipping. Dirt
or other fi ne particles are burned by heat er, causing brief patches
of orange fl ame.
If burner fl ame pattern is incorrect, as shown in Figure 25
• turn heater off (see To Turn Off Gas to Appliance, page 15)
• see Troubleshooting, pages 19 through 21
Figure 24 - Correct Burner Flame Pattern
Darker orange fl ames
Figure 25 - Incorrect Burner Flame Pattern
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INSPECTING BURNERS
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Pilot Flame Pattern
Burner Flame Pattern