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ENGLISH RAISmanualforRais600&Rais80
Chimney
Thechimneyisthedrivingforcewhichmakesthestovefunction.Inorderforthestoveto
performsatisfactorilythechimneyheightmustbesufficienttoensurethecorrectdraught
of14to18Pa,soastocleartheproductsofcombustionandpreventproblemsofsmoke
leakingintotheroomwhenthestoveislit.
Note:Achimneyheightofnotlessthan4.5metres,measuredverticallyfromtheoutletof
thestovetothetopofthechimney,shouldbesatisfactory.
AlternativelythecalculationproceduregiveninBS5854:1980maybeusedasthebasis
fordecidingwhetheraparticularchimneydesignwillprovidesufficientdraught.
PleaseNote,thisappliancehasbeentestedbythemanufacturersandworksona3m
straightflue.
Theoutletfromthechimneyshouldbeabovetheroofofthebuildinginaccordancewith
theprovisionsoftheBuildingRegulationsApprovedDocumentJ.
Iftheinstallationisintoanexistingchimney,thenitmustbesoundandhavenocra cksor
otherfaultswhichmayallowfumesintothehouse.Olderproperties,especially,mayhave
chimneyfaultsorthecrosssectionmaybetoolargei.e.morethan230x230mm.
Remedialactionshouldbetakenifrequired,expertadviceshouldbeso ughtwhere
required.
Ifthechimneyrequireslining,thenasuitablesolidfuelfluelinermustbeused,in
accordancewithBuildingRegulationsApprovedDocumentJ.
Anyexistingchimneymustbeclearofobstructionandshouldhavebe ensweptclean
immediatelybeforetheinstallationofthestove.Ifthestoveisfittedinplaceofanopen
fire,thenthechimneyshouldbesweptonemonthafterinstallationtoclearanysootfalls
whichmayhaveoccurredduetothedifferenceincombustionbetweenthestoveandthe
openfire.
Ifthereisnoexistingchimneytheneitheraprefabricatedblockchimney,inaccordance
withBuildingRegulationsApprovedDocumentJoratwi nwall insulatedstainlesssteel
fluetoBS4543canbeused.Thesechimneysmustbefittedinaccordancewiththe
manufacturer’sinstructionsandtheBuildingRegulations.
Asinglewallmetalfluepipeissuitableforconnectingthestovetothec himneybutis
notsuitableforusingforthecompletechimney.Thechimneyand
connectingfluepipemusthaveaminimumdiameterof150mmandit’s
dimensionshouldbenotlessthanthesizeoftheoutletsocketofthestovewhichis
150mm.Anybendinthechimneyorconnectingfluepipeshouldnotexceed45°.90°
bendsshouldnotbeused.
Combustiblematerialshouldnotbelocatedwheretheheatdissipatingthroughthe
wallsoffireplacesorfluescouldigniteit.Thereforewheninstallingthestoveinthe
presenceofcombustiblematerialsdueaccountmustbetakenofthe
guidanceontheseparationofcombustibl ematerialgiveninBuildingRegulationsAp
provedDocumentJandalsointhesestoveinstructions.