Desa BLUE FLAME BLUE FLAME VENT-FREE NATURAL GAS HEATER Operation And Installation Manual

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Desa BLUE FLAME BLUE FLAME VENT-FREE NATURAL GAS HEATER Operation And Installation Manual Manual pdf 11 page image

11103113OWNER’S MANUALINSPECTINGBURNERCheck pilot flame pattern and burner flamepattern often.PILOT FLAME PATTERNFigure 17 shows a correct pilot flame pat-tern. Figure 18 shows an incorrect pilotflame pattern. The incorrect pilot flame isnot touching the thermocouple. This willcause the thermocouple to cool. When thethermocouple cools, the heater will shutdown.If pilot flame pattern is incorrect, as shownin Figure 18• turn heater off (see To Turn Off Gasto Appliance, page 10)• see Troubleshooting, pages 12through 14ThermocoupleGRH/OV 009GOOD PILOTThermocouplePilot BurnerGRH/OV 008BAD PILOT/LPPilot BurnerFigure 17 - Correct Pilot Flame PatternFigure 18 - Incorrect Pilot Flame Pattern1/2 GLASS HEIGHTINCORRECT FLAME PATTERNAT HIGH POSITIONBURNER FLAME PATTERNFigure 19 shows a correct burner flamepattern. Figure 20 shows an incorrect burnerflame pattern. The incorrect burner flamepattern shows yellow tipping of the flame. Italso shows the flame higher than 1/2 theglass panel height.If burner flame pattern is incorrect, as shownin Figure 20• turn heater off (see To Turn Off Gasto Appliance, page 10)• see Troubleshooting, pages 12through 14WARNING: If yellow tippingoccurs, your heater could pro-duce increased levels of carbonmonoxide. If burner flame pat-tern shows yellow tipping, followinstructions at bottom of thispage.NOTICE: Do not mistake orangeflames with yellow tipping. Dustor other fine particles enter theheater and burn causing briefpatches of orange flame.Figure 19 - Correct Burner Flame PatternFigure 20 - Incorrect Burner Flame PatternYellowTippingCORRECT FLAME PATTERNAT HIGH POSITION1/2 GLASS HEIGHTCLEANING ANDMAINTENANCEODS/PILOT AND BURNERORIFICE• Use a vacuum cleaner, pressurizedair, or small, soft bristled brush toclean.CABINETAir Passageways• Use a vacuum cleaner or pressurizedair to clean.Exterior• Use a soft cloth dampened with amild soap and water mixture. Wipethe cabinet to remove dust.WARNING: Turn off heaterand let cool before cleaning.CAUTION: You must keepcontrol areas, burner, and circu-lating air passageways of heaterclean. Inspect these areas ofheater before each use. Haveheater inspected yearly by a quali-fied service person. Heater mayneed more frequent cleaning dueto excessive lint from carpeting,bedding material, etc.