Desa BG30N Safety Information And Installation Manual

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Desa BG30N Safety Information And Installation Manual Manual pdf 16 page image

www.desatech.com 114683-01D16BURNER FLAME PATTERNWARNING: If yellow tippingoccurs, your heater could pro-duce increased levels of carbonmonoxide.NOTICE: Do not mistake orangeflames with yellow tipping. Dirtor other fine particles enter theheater and burn causing briefpatches of orange flame.Figure 23 shows a correct burner flame pattern.Figure 24 shows an incorrect burner flame pattern.The incorrect burner flame pattern shows yellowtipping of the flame. It also shows the flame higherthan 1/2 the heat shield height.If burner flame pattern is incorrect, as shown inFigure 24• turn heater off (see To Turn Off Gas to Appli-ance, page 15)• see Troubleshooting, page 18INSPECTING HEATERCheck pilot flame pattern and burner flame pat-tern often.PILOT FLAME PATTERNFigure 21 shows a correct pilot flame pattern.Figure 22 shows an incorrect pilot flame pattern.The incorrect pilot flame is not touching thethermocouple. This will cause the thermocoupleto cool. When the thermocouple cools, the heaterwill shut down.If pilot flame pattern is incorrect, as shown inFigure 22• turn heater off (see To Turn Off Gas to Appli-ance, page 15)• see Troubleshooting, page 18Note: The pilot flame on natural gas units willhave a slight curve, but flame should be blue andhave no yellow or orange color.Figure 22 - Incorrect Pilot Flame PatternFigure 21 - Correct Pilot Flame PatternThermocouplePilot BurnerPilotBurnerThermocoupleBlue FlameYellow FlameFigure 23 - Correct Burner Flame PatternYellowTippingFigure 24 - Incorrect Burner FlamePatternHeat 1/ShieldHeightBlueFlameHeat 1/ShieldHeight