Install Instructions

23
C. Assembly of U.S. Boiler 60/100mm Concentric Venting
(IMPORTANT - Skip to Section D for 80/125mm Concentric Vent Assembly)
1) Concentricventcomponentssuppliedwiththeboilerarepackedinsidetheboilercartonandincludethefollowing:
a) 80/125x60/100mmreducingelbow(P/N101005-01).
b) 60/100mmterminalsection(straightsectionwithaterminalandoveralllengthof27-3/4”(P/N101006-01).
c)Two(2)Rubberwallgrommets(P/N101007-01).
2) Unlessthe80/125straightriser(P/N101163-01)isused,startbyattachingthereducingelbowtotheboilercollar.To
doso,removetheclampfromthelargeendofthereducingelbowandsetaside.Applyasmallamountofwatertothe
browngasketontheboilercollar.Pushtheelbowontotheboilercollaruntilthebeadontheelbowcontactsthetopedge
ofthecollar(Figure7.20).
3) ReinstalltheclampremovedinStep(2)sothattheelbowissecuredtotheboilercollar.
4) Ifnoadditionalsectionsofconcentricpipearerequired,attachtheterminalsectiontotheelbow.Inmostcases,itwill
needtobecutbeforedoingso.Usethefollowingproceduretocutthepipe:
a) Measuredistance“L”fromtheoutsidesurfaceoftheexteriorwalltotheendoftheelbowasshowninFigure7.21.
b)Add2-1/8”todistance“L”.CarefullymarkthislengthonthepipeasshowninFigure7.22.
c)Pressinthetwotabsholdingtheplasticterminalintheterminalsection(Figure7.22).Carefullypullouttheterminal
andtheinnerpipe.
d)Cuttheouter pipe onlyatthepointmarkedinStep(b)usingaviationshears,ahacksaw,oranabrasivewheelcutter.
Becarefultocutthepipesquare.De-burrthecutendwithaleoremorycloth.
e)Cuttheplasticinnerpipesothatitwillprotrude3/8”beyondtheouterpipewhenreinstalledintheterminalsection
(Figure7.23).UseanetoothhacksaworaPVCsawtocuttheplasticpipeandbecarefultocutthepipesquare.De-
burrthecutedgeoftheplasticpipewithale,razorblade,ornesandpaper.
f) Reinstalltheinnerpipeintheterminalsection.Sliptheoutsidewallgrommetovertheterminalsectionandposition
sothatitcoversthejointbetweentheouterpipeandtheterminal(Figure7.24).
g)Makeamarkontheterminalsection1”fromthecutendoftheouterpipeasshowninFigure7.24.
h)Passtheterminalsectionthroughthewallfromtheoutside.Pushtheremainingwallgrommetovertheterminal
sectionontheinsideofthewall.PushtheterminalsectionintotheelbowuntilthemarkmadeinStep(g)isnolonger
visible.Ifnecessary,thebrowngasketintheinnerpipemaybelubricatedwithafewdropsofwater.
i) Theterminalsectionmustbeattachedtotheelbowwithasingle#10x1/2”sheetmetalscrew(notsupplied)atthe
topoftheelbow.Drilla1/8”holeinthelocationshowninFigure7.25.Use a short drill bit or a drill stop to ensure
that the drill bit does not penetrate the pipe by more than 3/8”.Installa#10x1/2”screwinthishole.Do not use
a screw longer than 1/2” long.
j) Ifnotalreadydone,makesurethatbothwallgrommetsarermlyagainsttheinteriorandexteriorwallsurfaces.Seal
anycracksorotheropeningsneartheterminalthroughwhichexhaustcouldenterthebuilding.
5) Ifadditionalpiecesofpipeareused,installthemstartingattheboilerelbow.Supporteachsectionofstraightpipeatits
femaleend.
WARNING
Failure to follow the instructions could result in ue gas leakage into the combustion air or indoor
air, resulting in unsafe or unreliable operation
• Do not lubricate concentric gaskets with anything other than water.
• Do not attempt to cut any piping except as permitted in this section. When cutting these
sections, make sure all cuts are square and allow for proper insertion.
• Do not attempt to try to mix this concentric pipe with other venting systems.