19
plannInG the vent sYsteMPlantheroute ofthevent systemfromthe exhaustelbowto the
plannedlocationoftheventterminal.
1. Layouttotalventsystemtouseaminimumofventpipeandelbows.
2.Thiswaterheateriscapableofventinguegasesequivalentto
25’(7.6m)of2”pipe,65’(19.8m)of3”pipe,or128’(39.0m)of
4”pipeaslistedinTable1.
TABLE 1
Number of 2” Maximum 3” Maximum 4” Maximum
90° Elbows Pipe - ft. (m) Pipe - ft. (m) Pipe - ft. (m)
1 20(6.1) 60(18.3) 120(36.6)
2 15(4.6) 55(16.8) 112(34.1)
3 10(3.0) 50(15.2) 104(31.7)
4 -- 45(13.7) 96(29.3)
5 -- 40(12.2) 88(26.8)
6 -- 35(10.7) 80(24.3)
Theminimumventlengthsforeachofthepipesizesisone90°plus
2’(61cm)ofstraightpipeandtheappropriatetermination.
note:Theequivalentfeet(m)ofpipelistedaboveareexclusive
ofthe termination.That is,thetermination, withaninstalled
screen,isassumedtobeinthesystemandtheremainderofthe
systemmustnotexceedthelengthsdiscussedabove.
3. Theexhaustelbowassemblyisdesignedtoacceptonlystraight
sectionsof2”pipe.Tostart,aminimumof2”(5.1cm)of2”pipe
mustbeinserted andgluedto theexhaustelbow assemblyif
utilizing3”or4”ventpipe.Usethesamemethodwiththeblower
inletifadirectventcongurationisutilized.
If using 2” inch vent pipe:
Aminimumof2”(5.1cm)diametervent pipemustbeattached
totheexhaustelbowassembly.Thetotalsystemcannotexceed
thelengthsdiscussed above,whereeachelbow isequalto 5
equivalentfeet(1.5m)ofstraightpipe.
If using 3” or 4” inch vent pipe:
Twoinches(5.1cm)of2”pipemustbe attachedtotheexhaust
elbowassemblybeforeaddingareducertoacquire thedesired
pipediameter.Anappropriatelysized45degreeelbow(supplied
locally-aschedule40DWV)ventterminalmustbeobtainedwith
anequivalentscreen(suppliedinventkit).Thetotalsystemcannot
exceedtheequivalentpipelengthsdiscussedabovewhereeach
elbowisequalto5feet(1.5m)ofstraightpipe(3”ventpipe)or8
feet(2.4m)ofstraightpipe(4”ventpipe).
u.s. InstallatIons:
note: ThisunitcanbeventedwithPVCpipematerials(CellularCore
ASTM-F891;DWVASTM-D2665orCSAB181.2;Schedule40,80,
120ASTM-D1785orCSAB137.3;orSDRSeriesASTM-D2241or
CSAB137.3),CPVCpipematerials(CPVC41ASTM-D2846orCSA
B137.6;Schedule40,80ASTM-F441orCSAB137.6;orSDRSeries
ASTM-F442),ABSpipematerials(Schedule40DWVASTM-D2661
orCSAB181.1orSchedule40DWVCellularCoreASTM-F628).The
ttings,otherthanthe TERMINATION should be equivalent to PVC-
DWVttingsmeetingASTMD-2665(UseCPVCttings,ASTMF-438
forCPVCpipeandABSttings,ASTMD-2661/3311forABSpipe).
IfCPVCorABSpipeandttingsareused,thenpropercementmust
beusedforalljoints,includingjoiningthepipe toTermination(PVC
Material).IflocalcodesdonotallowtheuseofthePVCtermination
whenamaterialotherthanPVCisusedforventing,thenanequivalent
ttingofthatmaterial maybesubstituted ifthescreenin thePVC
terminalisremovedandinsertedintothenewtting.
canadian Installation of this water heater must comply with can/
CSA B149.1 - Natural Gas and Propane Installation Code which
requires the vent system components be certied to ULC S636.
Thiswaterheaterhasbeendesigncertied tobeventedwithPVC
pipecertiedandmarkedascomplyingwithULCS636. Thiswater
heaterissuppliedwitha2inch22.5degreeterminationelbowthatisa
specialttingthatmustbeusedwiththeappliance.Anyoutletpiping,
ttingsandglueusedtoventthisappliancethatisnotsuppliedbythe
manufacturermustcomplywiththeULCS636requirements.
PVCMaterialsshoulduseASTMD-2564GradeCement;CPVC
Materialsshoulduse ASTM F-493 Grade Cement and ABS
MaterialsshoulduseASTMD-2235GradeCement.
Ifthewaterheaterisbeinginstalledasareplacementforanexisting
powerventedheaterinpre-existingventing,athoroughinspection
ofexistingventingsystemmustbeperformedpriortoanyinstallation
work.Verifythatcorrectmaterialasdetailedabovehasbeenused,
andthattheminimumormaximumventlengthsandterminallocation
asdetailedinthismanualhavebeenmet.Carefullyinspecttheentire
ventingsystemforanysignsofcracksorfractures,particularlyat
jointsbetweenelbowsandotherttingsandstraightrunsofvent
pipe.Checksystemforsignsofsaggingorotherstressesinjointsas
aresultofmisalignmentofanycomponentsinthesystem.Ifanyof
theseconditionsarefound,theymustbecorrectedinaccordancewith
theventinginstructionsinthismanualbeforecompletinginstallation
andputtingthewaterheaterintoservice.
note: a.Forwater heaters in locations with high ambient
temperatures(above100°F)it isrecommendedthat CPVCor
ABSpipeandttingsbeused.B.A22.5degreeelbow(2”vent
pipe)ora45degreeelbow(3”and4”ventpipe)withaninstalled
screen VENT TERMINAL must be used in all cases.
4. Therewillbesomeinstallationswherecondensatewillbeformed
inthehorizontalrunsof theventsystem. This condensate will
runintothecondensateelbow.Thewaterheaterisshippedwith
a condensate hose that attaches to the condensate elbow. No
otherteeorttingisrequired.
condensateThiswaterheaterisacondensingunitandrequiresadraintobelocatedin
closeproximitytoallowthecondensatetodrainsafely.Thecondensate
drainsfromtheunitattheexhaustteelocatedatthebottomoftheunit
(seegure16).Condensatefromthiswaterheaterismildlyacidic.
Pleasenotethatsomelocalcodesrequirethatcondensateistreated
byusingapHneutralizinglterpriortodisposal.
Cautionmustbeusedtoensurethatthedrainisfreeandclearofdebris
andwillnotallowbackowthroughthecondensatehose.Consideration
mustbegiven to avoid freezing of the condensate lines which could
resultinexcessive build up of condensate inside the water heater.
Waterproofheattape may be required to prevent freezing of the condensate
lines. Please ensure that the outlet of the condensate drain does
notcreateaslipperyconditionwhichcouldleadtopersonalinjury.
condensatIon warnInG: thIs water heater Is a condensInG
unIt and requIres a draIn to Be located In close proXIMItY
to allow condensate to draIn safelY. the condensate
draIns froM unIt at the eXhaust elBow located at
BottoM of unIt. note: It Is IMportant that the condensate
hose not Be elevated aBove the eXhaust elBow, see
FIGURE 16. CONDENSATE BUILD-UP WILL BLOCK THE EXHAUST
outlet, whIch wIll cause IMproper operatIon.
FIGURE 16.