Desa SF20NT Safety Information And Installation Manual

Also see for LSF20NT: Safety information and installation manual Safety information and installation manual

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Desa SF20NT Safety Information And Installation Manual Manual pdf 15 page image

www.desatech.com 15116307-01AINSPECTING HEATERContinuedFigure 20 - Correct Burner Flame PatternYellowTippingFigure 21 - Incorrect Burner Flame PatternBlueFlameCLEANING 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 aqualified service person. Heatermay need more frequent clean-ing due to excessive lint fromcarpeting, bedding material, pethair, etc.WARNING: Failure to keepthe primary air opening(s) ofthe burner(s) clean may result insooting and property damage.ODS/PILOT AND BURNERUse a vacuum cleaner, pressurized air or small,soft bristled brush to clean.BURNER PILOT AIR INLETThe primary air inlet holes allow the properamount of air to mix with the gas. This provides aclean burning flame. Keep these holes clear of dust,dirt and lint. Clean these air inlet holes prior to eachheating season. Blocked air holes will create soot.We recommend that you clean the unit every threemonths during operation and have heater inspectedyearly by a qualified service person.We also recommend that you keep the burnertube and pilot assembly clean and free of dust anddirt. To clean these parts we recommend usingcompressed air no greater than 30 PSI. Your localcomputer store, hardware store or home centermay carry compressed air in a can. You can use avacuum cleaner in the blow position. If using com-pressed air in a can, please follow the directions onthe can. If you donʼt follow directions on the can,you could damage the pilot assembly.1. Shut off the unit, including the pilot. Allowthe unit to cool for at least thirty minutes.2. Inspect burner, pilot for dust and dirt.3. Blow air across the ports/slots and holes in theburner.4. Never insert objects into the pilot tube.Clean the pilot assembly also. A yellow tip on thepilot flame indicates dust and dirt in the pilot as-sembly. There is a small pilot air inlet about twoinches from where the pilot flame comes out ofthe pilot assembly (see Figure 22). With the heateroff, lightly blow air through the air inlet. You mayblow through a drinking straw if compressed airis not available.CABINETAir PassagewaysUse a vacuum cleaner or pressurized air to clean.ExteriorUse a soft cloth dampened with a mild soap andwater mixture. Wipe the cabinet to remove dust.Figure 22 - Pilot Air InletPilot AssemblyPilot Air InletFigure 20 shows a correct burner flame pattern.Figure 21 shows an incorrect burner flame pattern.The incorrect burner flame pattern shows yellowtipping of the flame.If burner flame pattern is incorrect, as shown inFigure 21• turn heater off (see To Turn Off Gas to Appli-ance, page 14)• see Troubleshooting, page 16