Desa Glo-Warm FA-20BB Owner's Operation And Installation Manual

Also see for Glo-Warm FA-20BB: OWNER'S OPERATION AND INSTALLATION MANUAL

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Desa Glo-Warm FA-20BB Owner's Operation And Installation Manual Manual pdf 14 page image

14105568BLUE FLAME NATURAL GAS HEATERFigure 21 - Incorrect Pilot Flame PatternThermocouple Pilot BurnerINSPECTINGBURNERCheck pilot flame pattern and burner flamepattern often.PILOT FLAME PATTERNFigure 20 shows a correct pilot flame pattern.Figure 21 shows an incorrect pilot flamepattern. The incorrect pilot flame is not touch-ing the thermocouple. This will cause thethermocouple to cool. When the thermo-couple cools, the heater will shut down.If pilot flame pattern is incorrect, as shownin Figure 21• turn heater off (see To Turn Off Gas to Ap-pliance, page 12 for thermostat models orpage 13 for non-thermostat models)• see Troubleshooting, pages 15 through 17Figure 20 - Correct Pilot Flame PatternThermocouplePilot BurnerBURNER FLAME PATTERNFigure 22 shows a correct burner flamepattern. Figure 23 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 23• turn heater off (see To Turn Off Gas To Ap-pliance, page 12 for thermostat models orpage 13 for non-thermostat models)• see Troubleshooting, pages 15 through 171/2 GFigure 22 - Correct Burner Flame PatternYellow Tipping1/2 GFigure 23 - Incorrect Burner Flame PatternNOTICE: Do not mistake orangeflames with yellow tipping. Dirtor other fine particles enter theheater and burn causing briefpatches of orange flame.WARNING: If yellow tippingoccurs, your heater could pro-duce increased levels of carbonmonoxide. If burner flame patternshows yellow tipping, follow in-structions at bottom of this page.CLEANING ANDMAINTENANCEWARNING: 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, pet hair, etc.1 / 2 GlassHeight1/ 2 GlassHeightODS/PILOT AND BURNER• Use a vacuum cleaner, pressurized air,or small, soft bristled brush to clean.CLEANING BURNERPILOT AIR INLET HOLEWe recommend that you clean the unit every2,500 hours of operation or every three months.We also recommend that you keep the burnertube and pilot assembly clean and free of dustand dirt. To clean these parts we recommendusing compressed air no greater than 30 PSI.Your local computer store, hardware store, orhome center may carry compressed air in acan. You can use a vacuum cleaner in theblow position. If using compressed air in acan, please follow the directions on the can.If you don't follow directions on the can, youcould damage the pilot assembly.1. Shut off the unit, including the pilot.Allow the unit to cool for at least thirtyminutes.2. Inspect burner, pilot for dust and dirt.3. Blow air through the ports/slots andholes in the burner.Clean the pilot assembly also. A yellow tipon the pilot flame indicates dust and dirt inthe pilot assembly. There is a small pilot airinlet hole about two inches from where thepilot flame comes out of the pilot assembly(see Figure 24). With the unit off, lightlyblow air through the air inlet hole. You mayblow through a drinking straw if compressedair is not available.Figure 24 - Pilot Inlet Air HolePilot AssemblyPilot Air InletHoleCABINETAir Passageways• Use a vacuum cleaner or pressurized airto clean.Exterior• Use a soft cloth dampened with a mildsoap and water mixture. Wipe the cabi-net to remove dust.