19
plannInG the vent sYsteMPlantheroute ofthe ventsystemfrom theexhaust elbowtothe
plannedlocationoftheventterminal.
1. Layouttotalvent systemtouseaminimumofventpipeandelbows.
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
of the termination. That is, the termination, with an installed
screen, is assumed to be in the system and the remainder of the
systemmustnotexceedthelengthsdiscussedabove.
3. Theexhaustelbowassemblyisdesignedtoacceptonlystraight
sectionsof2”pipe.Tostart,aminimumof2”(5.1cm)of2”pipe
mustbeinserted andglued tothe exhaustelbowassembly if
utilizing3”or4”ventpipe.Usethesamemethodwiththeblower
inletifadirectventcongurationisutilized.
If using 2” inch vent pipe:
Aminimumof2”(5.1cm)diameter ventpipemustbe attached
totheexhaustelbowassembly.Thetotalsystemcannotexceed
thelengthsdiscussed above,where eachelbowis equalto5
equivalentfeet(1.5m)ofstraightpipe.
If using 3” or 4” inch vent pipe:
Twoinches(5.1cm)of2”pipemust beattachedtothe exhaust
elbowassemblybeforeaddingareducerto acquirethedesired
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-D2241 or
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,includingjoiningthe pipetoTermination(PVC
Material).IflocalcodesdonotallowtheuseofthePVCtermination
whenamaterialotherthanPVCisusedforventing,thenanequivalent
ttingofthat materialmaybe substitutedifthe screeninthe PVC
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.
Thiswaterheaterhasbeen designcertiedtobeventedwith PVC
pipecertiedandmarkedascomplyingwith ULCS636.Thiswater
heaterissuppliedwitha2inch22.5degreeterminationelbowthatisa
specialttingthatmustbeusedwiththeappliance.Anyoutletpiping,
ttingsandglueusedtoventthisappliancethatisnotsuppliedbythe
manufacturermustcomplywiththeULCS636requirements.
PVCMaterialsshoulduseASTMD-2564GradeCement;CPVC
Materials should use ASTM F-493 Grade Cement and ABS
Materials should use ASTM D-2235 Grade Cement.
Ifthewaterheaterisbeinginstalledasareplacementforanexisting
powerventedheaterinpre-existingventing,athoroughinspection
ofexistingventingsystemmustbeperformedpriortoanyinstallation
work.Verifythatcorrectmaterialasdetailedabovehasbeenused,
andthattheminimumormaximumventlengthsandterminallocation
asdetailedinthismanualhavebeenmet.Carefullyinspecttheentire
ventingsystemforanysignsofcracksorfractures,particularlyat
jointsbetweenelbowsandotherttingsandstraightrunsofvent
pipe.Checksystemforsignsofsaggingorotherstressesinjointsas
aresultofmisalignmentofanycomponentsinthesystem.Ifanyof
these conditions are found, they must be corrected in accordance with
theventinginstructionsinthismanualbeforecompletinginstallation
andputtingthewaterheaterintoservice.
note: a.For water heaters in locations with high ambient
temperatures(above100°F) itisrecommended thatCPVC or
ABSpipeandttingsbeused.B.A22.5degreeelbow(2”vent
pipe)ora45degreeelbow(3”and4”ventpipe)withaninstalled
screen VENT TERMINAL must be used in all cases.
4. There will be some installations where condensate will be formed
inthehorizontalruns oftheventsystem. This condensate will
runintothecondensateelbow.Thewaterheaterisshippedwith
a condensate hose that attaches to the condensate elbow. No
otherteeorttingisrequired.
condensateThiswaterheaterisacondensingunitandrequiresadraintobelocatedin
closeproximitytoallowthecondensatetodrainsafely.Thecondensate
drainsfromtheunitattheexhaustteelocatedatthebottomoftheunit
(seegure16).Condensatefromthiswaterheaterismildlyacidic.
Please note that some local codes require that condensate is treated
byusingapHneutralizinglterpriortodisposal.
Caution must be used to ensure that the drain is free and clear of debris
andwillnotallowbackowthroughthecondensatehose.Consideration
mustbe given to avoid freezing of the condensate lines which could
resultin excessive build up of condensate inside the water heater.
Waterproofheat tape 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.