Harman Accentra Pellet Insert - Maintenance - Cleaning

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3-90-00674R28_12/13
Maintenance - Cleaning
Monthly Cleaning- continued:
Thereisa2"squareexhausttubeoneachside(lowerleft
andrightcorners)oftherebox.Theycanonlybeseenwith
thecastheatexchangercoversremoved.
Usingthecleaningbrushprovided,cleanthesetubesafter
every1tonofpelletsareused.
Thesetubesareanimportantpartoftheheatexchanger.
Efciencywillbelostiftheyarenotproperlymaintained.The
rightsidetubeisastraightpassagetothecombustionblower
chamber.TheLeftsidetubefollowsstraightbackthenmakes
arightturn, acrosstheback,tothecombustion chamber.
Youwillneedtousetheentirelengthofthecleaningbrush
handletoproperlycleanthistube.
Cleaning the Heat Exchanger tubes
The accordion heat exchanger surfaces are the primary
sourceofheattransferintotheroom.Therefore,itisvery
importanttokeepthemcleanfromyashandsootbuildup.
• The heat exchanger surfaces should be cleaned after
approximatelyevery1tonofpelletsareused.
• Use the scraper provided to clean all the way into the
point.
• Note:An old paint brush works well to clean these
surfaces.
• Note:Theunit“mustbecold”beforeusinganythingother
thanawirebrush.
• Thereare2primaryairinletholesontherearangeof
theburnpot.Theyshouldbecheckedforblockageand
cleanedwithavacuumifnecessary.Note:Thebottomof
theameguidehas2notchesthatmatchtheholes.
Cleaning the Heat Exchanger
PrimaryAirInlets
Fig. 63
Fig. 61
Fig. 62