Owner manual

17
PLANNING THE VENT SYSTEM
Ifthewaterheaterisbeinginstalledasareplacementforanexisting
powerventedheaterinpre-existingventing,athoroughinspection
of the existing venting system must be performed prior to any
installationwork.
Verifythatthecorrectmaterialasdetailedabove
hasbeenused,andthattheminimumormaximumventlengthsand
terminallocationasdetailedinthismanualhavebeenmet.Carefully
inspecttheentireventingsystemforanysignsofcracksorfractures,
particularlyat thejoints betweenelbowsand otherttings andthe
straightruns of vent pipe.Check the systemfor signs ofsagging
orother stresses inthe joints asa result ofmisalignment of any
componentsinthesystem.Ifanyoftheseconditionsarefound,they
mustbecorrectedinaccordancewiththeventinginstructionsinthis
manual before
completing the installation and putting the water
heaterintoservice.
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certiedtoULCS636.
Thiswaterheaterhasbeendesigncertiedtobeventedwith
PVC
pipecertiedandmarkedascomplyingwithULCS636.Thiswaterheater
issuppliedwitha2inch22.5degreeterminationelbowthatisaspecial
ttingthatmustbeusedwiththisappliance.Anyoutletpiping,ttingsand
glueusedtoventthisappliancethatisnotsuppliedbythemanufacturer
mustcomplywiththe
ULCS636requirements.
Forwaterheatersinlocationswithhighambienttemperatures(above
100°F)itisrecommendedthatCPVCpipeandttingsbeused.A
22.5degreeelbow(2”ventpipe)ora45degreeelbow(3”and4”
ventpipe)withaninstalledscreenVENTTERMINALmustbeused
inallcases.
Plantherouteoftheventsystemfromthedischargeoftheblower
totheplannedlocationoftheventterminal.
1. Layouttotalventsystemtouseaminimumofventpipeandelbows.
2. Thiswaterheateriscapableofventinguegasesequivalentto
25’(7.6m)of2”pipe,65’(19.8m)of3”pipe,or128’(39.0m)of
4”pipeaslistedinTable1.
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)
Theminimumventlengthsforeachofthepipesizesisone90°ontopof
theunitplus2’(61cm)ofstraightpipeandtheappropriatetermination.
NOTE:Theequivalentfeet(m)ofpipelistedaboveareexclusiveof
thetermination.Thatis,thetermination,withaninstalledscreen,is
assumedtobeinthesystemandtheremainderofthesystem
mustnotexceedthelengthsdiscussedabove.
3. Theblowerdischargeadapteris madetoacceptonlystraight
sectionsof2”pipe.Tostart,aminimumof2inches(5.1cm)of2”
pipemustbeattachedtotheblowerdischarge,seeFigure17.
If using 2” inch vent pipe:
 Aminimumof2inches(5.1cm)mustbeattachedtotheblower
before the rstelbow.Aftertherst elbowadd the additional
venting required for the installation. The total system cannot
exceedthelengthsdiscussedabove,whereeachelbowisequal
to5feet(1.5m)ofstraightpipe.
If using 3” or 4” inch vent pipe:
 Twoinches (5.1 cm) of pipe must be attached to the blower
dischargebeforeaddingareducertoacquirethedesiredpipe
diameter.An appropriately sized 45 degree elbow (supplied
locally-a schedule 40 DWV) vent terminal must be obtained
withanequivalentscreen(suppliedinventkit).Thetotalsystem
cannot exceed the equivalent pipe lengths discussed above
whereeachelbowisequalto5feet(1.5m)ofstraightpipe(3”
ventpipe)or8feet(2.4m)ofstraightpipe(4”ventpipe).
4. Therewillbesomeinstallationswherecondensatewillbeformed
inthehorizontalrunsoftheventsystem.Thiscondensatewill
runintothecondensatebootattachedtotheblowerandoutthe
tting.Thewaterheaterisshippedwithcondensatehosethat
attachestothettingonthecondensateboot.NootherTeeor
ttingisrequired.SeeFigures17,20and21.
CONDENSATE
Thiswaterheater isacondensing unitandrequiresa draintobe
locatedincloseproximitytoallowthecondensatetodrainsafely.
Thecondensatedrainsfromtheunitattheexhaustteelocatedatthe
bottomoftheunit(seegure16)andfromtwoplacesontheblower
assembly(seegure17).Condensatefromthiswaterheaterismildly
acidic.Pleasenotethatsomelocalcodesrequirethatcondensateis
treatedbyusingapHneutralizinglterpriortodisposal.
NOTE:Itisimportantthatthecondensatehoseonthebottomoftheunit
isnotinstalledelevatedabovetheclampthatissecuredtothesideofthe
jacket,seegure16.Thismustbetruefortheentirelengthofthehose
fromtheclamptotheexitintoanappropriatedrain.Iftheseinstructions
arenotfollowedorifthecondensatehoseisblocked,waterwillspillfrom
thecondensatetrap.Aswitheverywaterheaterinstallation,ametal
drainpanshouldbeusedtopreventwaterdamagetothesurrounding
area.Ifnecessary,acondensatepumpwithanincorporatedreservoir
maybe used to pumpthe water toan appropriate drain.To avoid
condensatespillage,selectapumpwithanoverowswitch.
Cautionmustbeusedtoensurethatthedrainisfreeandclearofdebris
andwillnotallowbackowthroughthecondensatehose.Consideration
mustbegiventoavoidfreezingofthecondensatelineswhichcouldresult
inexcessivebuildupofcondensateinsidethewaterheater.Waterproof
heattapemayberequiredtopreventfreezingofthecondensatelines.
Pleaseensurethattheoutletofthecondensatedraindoesnotcreate
aslipperyconditionwhichcouldleadtopersonalinjury.