Kroll Kozy - Fitting The Flue; Flue Requirements and Installation; Flue Safety Considerations

Kroll Kozy
Page 5
IfyouareusingyourKOZYwithouttheblowerfan,thentheradiantheatoutputishigherandALL
theaboveclearancesshouldbedoubled,tobeonthesafeside.
FittingTheFlue
Theheatermustbeconnectedtoa150mm(6”)diameterstainlesssteelflue,ofatleastfour
metresinheight.Itisimportant,becauseitcreatesadraughtwhichallowstheheatertoburn
properly,enablingsmokelesscombustion.
TheflueconsistsofaTpiece(whichtrapsanycondensationorrainwaterthatcomesdownthe
flue),somestraightsectionsandacowled“Chinaman’shat”ontop.Thetopoftheflueshouldbe
infreeair.Thecowledhatensuresthatthedraughtislessaffectedbystrongwinds.Thetopofthe
flueshouldextendatleastonemetrethroughtheroof.Ifit’sneartheridge,halfametrewilldo.
Wheninstallingtheflue,itispreferabletomaintainagoodupwardsslope,butifyoumusthavea
horizontalsection,itmustnotexceedonethirdofthetotalfluelength.
BecauseyourKozyisnotatemperamentalheater,youcanbendtheseguidelinesabit,butit’sbest
toadheretothemwherepossible.Ifindoubt,consultyourdealer.
Ifthelengthofyourflueismorethan5or6metres,it’spossiblethatthedraughtwillbetoo
high.Thismeanstoomuchheatmaybe“sucked”outofyourKOZY,andlostuptheflue.Thiscan
beeasilyfixedbyfittingasimpledraughtcontroldevice
Werecommendthattheoverlaponthefluesectionconnectionsissuchthatanymoisturefrom
condensationrunningdowntheinsideofthefluedoesnotleaktotheoutside,becauseitwill
causeunsightlystreaks.Iftheappearancedoesn’tbotheryou,suityourself.Airtightflue
connectionsarenotcritical.Forjoinsoutsidetheroof–usesilastictostopwaterenteringtheflue
atthejoint.Theheatandupwardsmovementofthefluegasmeansthepressureintheflueis
slightlylowerthanthepressureoutside,sofluegasdoesn’tleakout.Butyoushouldn’thavebig
gaps,ortheairwillbedrawninandaffectyourdraught.
Thefluegetsveryhot.Ifyou’regoing
throughaceiling,youmustusea
doubleskinnedflueforthatsection.
Ifyourflueislikelytobetouchedby
thegeneralpublic(kidsinparticular),
westronglyadviseaheatshield.In
fact,werecommenditforalmostall
installations.
Foraweatherproofsealwherethe
fluegoesthroughtheroof,we
recommendaDEKTITEDFS160220
RE“rubber”roofcollar.We
recommendtheSILICONERED
dektite,ratherthattheblackone,as
ithasabetterheatandUV