16
2) ThisappliancerequiresaSpecialGasVent.TheproductisdesignedtouseBurnhamsuppliedAL29-4C® Stainless
Steelventsystemcomponentswhenutilizingthesuppliedventadaptor.Thefollowingmanufacturersoffersimilar
AL 29-4C®componentsandareapprovedforusewiththisproduct.Theuseofthesealternatemanufacturer’s
ventingsystemscanbeutilizedbyconnectingdirectlytotheinstalledventpipe(suppliedadaptorisnotrequired).
SeeTable6.5forcompletelistofBurnhamVentSystemComponents.
3) InstallVentPipe,BurnhamGasketedVentSystem.
 ProcedureforJoiningBurnhamGasketedVentPipeandFittings.SeeFig.6.7.
a) Wipethemaleendofeachjointusinganalcoholpadtoremoveanydirtandgrease.
b) AlignweldseamsinpipesanduseaslighttwistingmotiontoFULLYinsertmaleendintofemaleendof
joint.Ensurebeadinmaleendofpipeisbelowlockingbandandrestagainsttheendofthefemalepipe.Verify
thefactory-installedgasketisnotdislodgedorcut.
c) TightenlockingbandbyHANDwitha5/16”nutdriveruntilsnugplus¼turn.DONOTSECURE
 JOINTSWITHSHEETMETALSCREWSORPOPRIVETS.DONOTPUNCTURETHEVENT
SYSTEM!
d) Oncetheinstallationiscomplete,operateapplianceandinspectalljointstoensurethatuegasesand/or
liquidcondensatewillnotescape.
Figure 6.7: Burnham Gasketed Vent Joint Detail
4) AssemblyofFlex-L-Intl.Star-34VentSystem:
a) Star-34GeneralNotes:
• DonotcutStar-34ventcomponents.
• Supporthorizontalpipingsectionsatintervalsof48”orless.
• VerticalventingsystemsmustbesupportedbyatleastoneStar-34Firestop.Anadditionalvertical
supportisrequiredafteranyoffset.
• OrientStar-34componentssothatthearrowsonthepipinglabelsareinthedirectionofuegasow.
b) Startassemblyoftheventsystemattheboiler.RemovethehoseclampshippedontheCHGventcollar.
Bendthethreehoseclamptabsonthiscollaroutwardslightly.
c) Cleantheexteriorofthemaleendoftherstpieceofpipeandtheinsideoftheventcollarontheboiler.
UseacleanersuchasMethylEthylKeytone(MEK)ornaptha.
d) Onthemaleendofthepipe,applya¼”widebeadofsiliconeapproximately¼”fromtheendofthepipe
andanother¼”beadagainstthejointsideofthestopbead(Fig6.7a).
e) Insertthemaleendofthepipeintotheboilerventcollaruntilitbottomsout.
f) Applyanadditionalbeadofsiliconeovertheoutsideofthejointandsmoothout.
g) Replaceandtightentheclampontheventcollar.
h) Cleanthefemaleendoftherstpieceofpipe.Alsocleanthemaleendofthenextpieceofpipe.
i) Applysiliconeasinstep(d)(Fig6.7b).
j) Alignthelongitudinalseamsofthepipeandinsertthemaleendofthesecondpipeintothefemaleendof 
therstpipe.
k) InsertaStar-34joinerbandintotheinletofthebeadedchannel.Feedthejoinerbandinsothatitmakesits 
wayaroundthechannelandoverlapsbyapproximately½”(Fig6.7b).