Desa EZ18NR Owner's Manual

Contents

Desa EZ18NR Owner's Manual Manual pdf 23 page image

www.desatech.com114668-01F 23INSPECTING bURNERSFigure 33 - Correct Pilot Flame Pattern(Your pilot may vary from pilots shown)Pilot BurnerThermocoupleFigure 34 - Incorrect Pilot Flame Pattern(Your pilot may vary from pilots shown)ThermocoupleThermocoupleThermocouple Pilot BurnerFRONT BURNER FLAME PATTERNFigure 35 shows correct front burner flamepattern. Figure 36 shows incorrect frontburner flame pattern. The incorrect burnerflame pattern shows yellow tipping at top ofblue flame.WARNING: If yellow tippingoccurs, your heater could pro-duce increased levels of carbonmonoxide. If front burner flamepattern shows yellow tipping,follow instructions at bottom ofthis page. Yellow flame on rearburner is normal.NOTICE: Do not mistake orangeflames with yellow tipping. Dirtor other fine particles are burnedby heater, causing brief patchesof orange flame.If front burner flame pattern is incorrect, asshown in Figure 36• turn heater off (see To Turn Off Gas to Ap-pliance, page 21)• see Troubleshooting, page 25Figure 35 - Correct Front Burner FlamePatternFigure 36 - Incorrect Front Burner FlamePatternYellow Tipping AtTop of Blue FlameCheck pilot flame pattern and burner flamepatterns often.PILOT FLAME PATTERNFigure 33 shows a correct pilot flame pattern.Figure 34 shows an incorrect pilot flame pat-tern. The incorrect pilot flame is not touchingthe thermocouple. This will cause the thermo-couple to cool. When the thermocouple cools,the heater will shut down.If pilot flame pattern is incorrect, as shownin Figure 34• turn heater off (see To Turn Off Gas to Ap-pliance, page 21• see Troubleshooting, page 25Note: The pilot flame on natural gas units willhave a slight curve, but flame should be blueand have no yellow or orange color.