Desa LMFP33NR(A) Owner's Operation And Installation Manual

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Desa LMFP33NR(A) Owner's Operation And Installation Manual Manual pdf 23 page image

www.desatech.com111604-01H 23BURNER PRIMARY AIR HOLESAir is drawn into the burner through the holes inthe fitting at the burner entrance. These holes maybecome blocked with dust or lint. Periodicallyinspect these holes for any blockage and clean ifneeded. Blocked air holes will create soot.MAIN BURNERPeriodically inspect all burner flame holes with thefireplace running. All slotted burner flame holesshould be open with yellow flame present. All roundburner flame holes should be open with a small blueflame present. Some burner flame holes may becomeblocked by debris or rust, with no flame present. Ifso, turn off fireplace and let cool. Remove blockage.Blocked burner flame holes will create soot.BURNER FLAME PATTERNWARNING: If yellow tippingoccurs, your fireplace couldproduce increased levels ofcarbon monoxide.NOTICE: Do not mistake orangeflames with yellow tipping. Dirtor other fine particles enter thefireplace and burn causing briefpatches of orange flame.Figure 41 shows a correct burner flame pattern. Fig-ure 42 shows an incorrect burner flame pattern. Theincorrect burner flame pattern shows the flame higherconsistently higher than 1 inch above the logs.If burner flame pattern is incorrect, as shown inFigure 42• turn heater off (see To Turn Off Gas To Appli-ance, page 21)• see Troubleshooting, page 25INSPECTING BURNERSContinuedCLEANING ANDMAINTENANCEWARNING: Turn off fireplaceand let cool before cleaning.CAUTION: You must keepcontrol areas, burner, and cir-culating air passageways offireplace clean. Inspect theseareas of fireplace before eachuse. Have fireplace inspectedyearly by a qualified serviceperson. Fireplace may needmore frequent cleaning due toexcessive lint from carpeting,bedding material, pet hair, etc.WARNING: Failure to keepthe primary air opening(s) ofthe burner(s) clean may result insooting and property damage.BURNER INJECTOR HOLDER ANDPILOT AIR INLET HOLEThe primary air inlet holes allow the proper amountof air to mix with the gas. This provides a cleanburning flame. Keep these holes clear of dust, dirt,lint, and pet hair. Clean these air inlet holes prior toeach heating season. Blocked air holes will createsoot. We recommend that you clean the unit everythree months during operation and have heaterinspected yearly 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.Figure 41 - Correct Burner Flame PatternYellowTippingFigure 42 - Incorrect Burner FlamePattern