PEXa PLUMBING DESIGN AND INSTALLATION GUIDE · Plumbing Code, governed by the International...

PEXa PLUMBING DESIGN AND INSTALLATION GUIDERAUPEX® UV Shield Pipe and EVERLOC+® Compression-sleeve Fittings

1. Scope 3

2. System Overview 4 2.1 Application 4 2.2StandardsandCertifications 4 2.3Specification 5 2.4Warranty 5 2.5DesignServices 5

3. RAUPEX PEXa Pipe 6 3.1 Pipe Properties 6 3.2PipeDimensionsandWeights 6 3.3PipeMarkings 7 3.4PressureandTemperatureRatings 7 3.5ExcessiveTemperatureandPressureCapability 7 3.6CorrosionResistance 8 3.7ChlorineResistance 8 3.8UltravioletResistance 8 3.9BendRadius 9 3.10ChemicalCompatibility 9 3.11FreezeBreakResistance 9 3.12 Condensation 9 3.13 Pressure Loss 9

4. EVERLOC+ Compression-sleeve Fittings 10 4.1FittingScope 10 4.2FittingAssembly 12 4.3 Installation Considerations 12 4.4EVERLOC+Compression-sleeveTools 15

CONTENTS

Forupdatestothispublicationandthemostcurrenttechnicalinstructions,safetyinformationandmanufacturer’srecommendations,visitwww.na.rehau.com/resourcecenter

5. Design Considerations 17 5.1PipeSizing 17 5.2EquivalentLengthofFittings 18 5.3PipingLayouts 19 5.4ThermalExpansionandContraction 20 5.5InstallationinFire-ratedAssemblies 22 5.6OverheadInstallations 25 5.7WaterQuality 25 5.8HotWaterRecirculation 26 5.9WaterHammer 26

6. Installation Considerations 27 6.1LocalCodeApprovals 27 6.2Packaging,Transport,HandlingandStorage 27 6.3UncoilingPipe 27 6.4BendingPipe 27 6.5DistanceBetweenFittings 28 6.6PipeProtection 28 6.7Insulation 29 6.8InstallationBelow-grade,in-slab 29 6.9FixtureConnectionCommonComponents 29 6.10WaterHeaterConnections 30 6.11SupportingRAUPEXPipe 30 6.12SupportingEVERLOC+Fittings 31 6.13CopperSoldering 31 6.14KinkRepair 32 6.15ThawingFrozenPipe 32 6.16Disinfection 32 6.17PressureTesting 33

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This technical information applies to the REHAU PEXa plumbing system and specifically the assembly and use of the EVERLOC+® compression-sleeve system with RAUPEX® UV shield pipe (PEXa pipe) intended for use in hot- and cold-water potable distribution systems.

Forprofessionaluseonly.Personsusingthisguidemustbeexperi-encedandappropriatelylicensedcontractors,whohaveanunder-standingoftheprinciplesandpracticesfortheinstallationofhot-andcold-waterpotabledistributionsystems.

TheinformationpresentedinthisguideisintendedtodemonstratetheproperassemblymethodandinstallationrecommendationsfortheREHAUPEXaplumbingsystem.Itistheresponsibilityofthelicensedcontractortochecktheprevailinglocalcodesandtoverifythattechnicalinformationpresentedinthisguideisappropriateforaparticular installation.

Nothinginthisguidesupersedesnationalorlocalcoderequirementsortherecommendationsofothermanufacturersregardingtheircomponents.Observeallapplicablenational,stateandlocallaws,regulations,standards,codesandordinances.IfyoubelieveREHAUproductinformationconflictswithapplicablecoderequirements,industrystandards,ortherecommendationsofothermanufacturersregardingtheircomponents,contacttheREHAUdistributorinyourareaandconsultwiththebuildingauthorityhavingjurisdictionbeforeinstallingtheREHAUPEXaplumbingsystem.

Beforestartingtheinstallationprocess,readtheREHAUPEXa Limited Warranty,availableatwww.na.rehau.com/warranties.ItcanalsobeobtainedfromyourauthorizedREHAUdistributororbywritingtoREHAUConstructionLLC,1501EdwardsFerryRoadNE,LeesburgVA20176US.

Properinstallationistheresponsibilityoftheinstallingcontractor.ReviewtheREHAUTechnical GuidelinespriortoinstallationoftheREHAUPEXaplumbingsystem.REHAUTechnical Guidelines are definedintheREHAUPEXa Limited Warranty as:ThemostcurrentandapplicableversionsofallthetechnicalliteratureavailableontheREHAUNorthAmericawebsiteatwww.na.rehau.com/resourcecenter,including,butnotlimitedto,technicalmanuals,instructionguides,technicalbulletins,submittalsandREHAUAcademytrainingpresenta-tions.ChecktheREHAUResourceCenter(www.na.rehau.com/resourcecenter)forthelatestupdates.

ContacttheREHAUdistributorinyourareaifyoudonotunderstandtheinformationinthismanualorifyouhavequestionsabouttheREHAUTechnical Guidelines.

Thisguidecontainssafety-relatedinformationthatrequiresyourspecialattention.Itisindicatedwiththesafetyalertsymbolandthesignalwordsdescribedbelow:

DANGERIndicatesahazardoussituationwhich,ifnotavoided,willresultindeathorseriousinjury.

WARNINGIndicatesahazardoussituationwhich,ifnotavoided,couldresultindeathorseriousinjury.

CAUTIONIndicatesahazardoussituationwhich,ifnotavoided,couldresultinminorormoderateinjury.

NOTICE Indicatesariskofpropertydamage.

Onlytrainedpersonnelshouldbeengagedintheinstallationprocess.FollowtheinstructionsinthisguideandotherREHAUTechnical Guidelinesandusecommonsensetoreducetheriskofinjuryorpropertydamage.

WARNINGReadtheinstructionmanualfortheEVERLOC+compression-sleevetoolsbeforeuseandfollowallsafetyprecautions-improperusecancauseseriouspersonalinjury

WARNINGEVERLOC+compression-sleevetoolsuseastronghydraulicforcetoexpandPEXapipeandcompresscomponentsoftheREHAUEVERLOC+compression-sleevesystem.

Toreducetheriskofcrushandlacerationinjury,keepfingers,handsandallpartsofyourbodyawayfromtheexpanderhead,hydraulicslideandcompressionjawsduringoperation.Removethebatterybeforeattemptingtochangeoradjusttheexpanderheadorcompressionjaws.

EVERLOC®isaregisteredtrademarkofREHAU.DEWALT® andtheDEWALTlogoaretrademarksofStanleyBlack&Decker,Inc.,oranaffiliatethereofandareusedunderlicense.MAKITA®isatrademarkofMakitaCorporation,oranaffiliatethereof.

1. SCOPE

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2.1 ApplicationTheREHAUPEXaplumbingsystemincludesRAUPEXUVshieldPEXapipe,PEXacompressionsleevesandEVERLOC+polymerandlead-freebrassfittings.Thissystemisdesignedforpotableapplications.

TheEVERLOC+compression-sleevefittingsystemisacold-expan-sionPEXafittingsystemthatisavailableinpolymerandlead-free(LF)brassandisassembledwithaspeciallydesignedPEXacompressionsleeve.ThefittingisdesignedspecificallyforusewithRAUPEXpipeandcanonlybeassembledwiththeEVERLOC+compression-sleevetools.

Fig. 2.1: RAUPEX UV shield crosslinked polyethylene (PEXa) pipe

Fig. 2.2: EVERLOC+ compression-sleeve fittings and sleeves

2. SYSTEM OVERVIEW

Fig. 2.3: EVERLOC+ compression-sleeve tools

2.2 Standards and CertificationsThegoverningmodelcodeswithintheUnitedStatesandCanadadefinetherequiredstandardsforPEXpipingsystems.

IntheUS,themodelcodesthataretypicallyadoptedbylocaljurisdictionsare:theInternationalCodes(Mechanical,PlumbingandResidential)governedbytheInternationalCodeCouncil(ICC)ortheUniformCodes(MechanicalandPlumbing)andtheNationalStandardPlumbingCode,governedbytheInternationalAssociationofPlumbingandMechanicalOfficials(IAPMO).

InCanada,themodelcodethatistypicallyadoptedbylocaljurisdic-tionsistheNationalPlumbingCodeofCanada(NPCC)whichisgovernedbytheNationalResearchCouncilofCanada(NRCC).

Withinthesemodelcodes,thestandardrequirementsforPEXpipeandfittingsareASTMF877orCSAB137.5.ThesestandardsdefinetherequirementsandtestmethodsforPEXpipingsystems.

TheREHAUPEXaplumbingsystemisthird-partycertifiedbyNSFInternational(www.nsf.org)tothefollowingstandards:-ASTMF876StandardSpecificationforCrosslinkedPolyethylene(PEX)Tubing-ASTMF877StandardSpecificationforCrosslinkedPolyethylene(PEX)Hot-andCold-WaterDistributionSystems-CSAB137.5CrosslinkedPolyethylene(PEX)TubingSystemsfor

Pressure Applications-NSF/ANSI14PlasticPipingSystemComponentsandRelated

Materials-NSF/ANSI61DrinkingWaterSystemComponentsandRelated

Materials-NSF/ANSI372DrinkingWaterSystemComponents–LeadContent(complieswiththelead-freerequirementsoftheU.S.SafeDrinkingWater Act)

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2.3 SpecificationREHAUprovidesarecommendedspecificationfordomesticwaterpipingandfittings.Thisrecommendedspecificationisprovidedasaguidefordevelopmentofthefinalspecificationbyaarchitect,engineer,orbuilder.Thearchitect/engineer/buildershallberespon-sibletoconvertthisrecommendedspecificationintoafinalspecifica-tionthatmeetsthefunctionalneedsoftheclient,aswellastocomplywithallapplicablebuilding,plumbing,andmechanicalcodes.Specificationsareavailableatwww.na.rehau.com/resourcecenter.

2.4 WarrantyRAUPEXUVshieldpipeandEVERLOC+compression-sleevefittingsandsleevesarebackedbya25-yearlimitedwarranty.EVERLOC+compression-sleevetoolsarebackedbya2-yearlimitedwarranty.REHAUoffersthiswarrantywhentheinstallationiscarriedoutinaccordancewiththerequirementsoutlinedintheREHAUPEXa Warranty 855.018,whichisavailableasaseparatedocumentatwww.na.rehau.com/warranties.Pleasereadwarrantypriortoinstallation.

2.5 Design ServicesREHAUDesignServicescanprovidecustomerswithadetailedsubmittalpackagetosupporttheinstallationoftheREHAUPEXaplumbingsystem.

REHAUPlumbingDesignServicesinclude:-BIMlibraryofplumbingsystemcomponents-Productsubmittals-Projectbillofmaterials-Supportofpipelayoutbasedontheprojectengineer’sapprovedplumbingpipingdesign

2.5.1 Building Information Modeling LibraryTheREHAUBIMLibraryoffersadirectoryofdrawingsthatareeasytodownloadintoanactivedesign.BIMfilesofferefficienciestoprojectownersthrougheaseofcollaboration.TheREHAUBIMlibraryoffersmodelsofcoreproductsincludingpipe,fittings,manifoldsandinstallation accessories.

2.5.2 LoopCAD® SoftwareREHAUPlumbingCADcreatesprofessionalpipelayoutdrawingsandbillofmaterialsfortheREHAUPEXaplumbingsystem.

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3. RAUPEX PEXa PIPE

3.1 Pipe PropertiesCrosslinkedpolyethyleneispolyethylene(PE)whichhasundergoneachangeinmolecularstructurewherebythepolymerchainsarechemicallylinked,crosslinked(X),witheachothertoformathree-dimensionalnetwork.Theresultisaflexiblethermosetpolymerwithimprovedmechanical,thermalandchemicalproperties.

TherearethreemethodsofmanufacturingPEX:-Theperoxidemethod(PEXa),ASTMrequiresaminimumof70%crosslinkedPEmolecules-Thesilanemethod(PEXb),ASTMrequiresaminimumof65%crosslinkedPEmolecules-Theradiationmethod(PEXc),ASTMrequiresaminimumof65%crosslinkedPEmolecules

RAUPEXpipeismanufacturedusingtheperoxidemethod(PEXa),whichyieldsthehighest,mostconsistentlevelofcrosslinking.PEXatechnologyenhancesflexibilityandthermalmemory,providingeaseofhandlingandkinkrepaircomparedtoPEXbandPEXc.

PEXahasdistinctadvantagesovermetalandotherpolymerpipes:-Resistspittingandstresscorrosion-Resistsscalinganddepositbuild-upwhenusedwithbothhardandsoftenedwater-Minimizesnoisethatistransmittedthroughpipes-Resistsnotchingandabrasiondamage

RAUPEXismanufacturedbyREHAUinafacilitywhosequalitymanagementsystemisISO9001certified.Inaddition,RAUPEXproductionisindependentlymonitoredannuallyNSFInternational,CSAInternationalandUnderwritersLaboratoriesInc.(UL).

Table 3.1: RAUPEX Properties

Specification English SI Standard

MinimumDensity

58lb/ft3 926kg/m3 ASTMF876

MinimumDegreeofCrosslinkling

70% 70% ASTMF876

MaxThermalConductivity

2.84Btuin/(ft2 ˚F•hr) 0.41W/(m˚K) DIN16892

CoefficientofLinear Expansion

9.33x10-4in/ft˚F@68˚F1.33x10-3in/ft˚F@212˚F

0.14mm/(m˚C)@20˚C0.2mm/(m˚C)@100˚C

Mean @ 20-70˚CperDIN16892

ModulusofElasticity

87,000-130,500psi@68˚F43,500-58,000psi@176˚F

600-900N/mm2 @20˚C300-400N/mm2 @80˚C

Minimum@20˚CperDIN16892

Specification English SI Standard

Tensile Strength

4194-4355psi@68˚F2610-2900psi@176˚FperASTMD638

26-30N/mm2 @20˚C18-20N/mm2 @80˚CperASTMD638

--

IZODImpactResistance

No Break No Break --

Roughness e=0.00028in. e=0.007mm --

TemperatureWorkingRange

-40to200˚F -40to93˚C --

MaximumShort-termExposure

150psig@210˚F(48hr)

1035kPa@99˚C(48hr)

ASTMF876

UVResistance SeeTB218 ASTM2657

3.2 Pipe Dimensions and WeightsRAUPEXpipeisavailableinnominalsizesrangingfrom3/8to2in.RAUPEXisinaccordancetothedimensionalstandardsdefinedinASTMF876.RAUPEXiscoppertubesize(CTS)outsidediameter(OD),whichmeansthattheactualODofthepipeis1/8in(3.18mm)largerthanthenominalsize.

Wallthicknessisdefinedbythestandarddimensionalratio(SDR).RAUPEXUVshieldpipeisSDR9,whichequatestotheoutsidediameterbeingapproximatelyninetimesthewallthickness.

Table 3.2: RAUPEX Dimensions and Weights

Pipe Size Average OD in (mm)

Min Wall Thicknessin (mm)

Weightlb/ft (kg/m)

3/8in 0.500(12.70) 0.070(1.78) 0.04(0.07)

1/2in 0.625(15.88) 0.070(1.78) 0.06(0.08)

5/8in 0.750(19.50) 0.083(2.12) 0.08(0.11)

3/4in 0.875(22.22) 0.097(2.47) 0.10(0.15)

1 in 1.125(28.58) 0.125(3.18) 0.17(0.26)

11/4in 1.375(34.92) 0.153(3.88) 0.25(0.37)

11/2in 1.625(41.28) 0.181(4.59) 0.35(0.52)

2 in 2.125(53.98) 0.236(6.00) 0.60(0.90)

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3.3 Pipe MarkingsRAUPEXpipemarkingsarerepeatedevery3ft(0.9m),listallcertificationsandapprovals,andincludeanincrementalfootagemarkingtoassistwithinstallation.

3.3.1 PEX Designation CodeRAUPEXpipeisfurtheridentifiedwithaPEXMaterialDesignationcodeinaccordancetoASTMF876.ThePEXDesignationCodeistheabbreviationforthematerial-PEX-followedbyfournumerals.

The PEX Designation Code for RAUPEX UV shield pipe is

PEX 3306

Thefirstnumeral(3)referstothechlorineresistanceinoneoffourcategories,whentestedinaccordancewithASTMTestMethodF2023andevaluatedinaccordancewithASTMF876.Thismeasurementindicatestheallowablehoursof140°Fwaterrecirculationin1day.

0 = none1 = 4 hours

e.g., 25% of lifetime

3 = 12 hourse.g., 50% of lifetime

5 = 24 hourse.g., 100% of lifetime

Thesecondnumeral(3)referstoUVresistanceinoneoffourcategories,whentestedinaccordancewithASTMTestMethodF2657andevaluatedinaccordancewithASTMF876.ThemeasurementindicatestheallowabletimepipecanbeexposedtoUVwithoutbeingcompromised.

0 = none 1 = 1 month 2 = 3 months 3 = 6 months

Thethirdandfourthnumerals(06)refertotheHydrostaticDesignStressforwaterat73°Finhundredsofpsi.Thestandardpressureratingat73°Fisderivedfromthismeasurement.

06 = 630 psi

3.4 Pressure and Temperature RatingsThemaximumtemperatureandpressureratingsoftheRAUPEXplumbingsystemareinaccordancetoASTMF876,CSAB137.5andPPITR-3.Thedesignershalldeterminetheactualconditionsandapplytheappropriateandadditionaldesignfactorsasrequiredforanyparticularproject.

AccordingtotheREHAUPEXa Limited Warranty,theRAUPEXpipewarrantyperiodisforoperatingconditionsatorbelow180°F(82.2°C)inpermittedapplicationswhenthehandling,use,installationandmaintenancecontinuallycomplieswithallREHAUTechnical Guidelines.

Table 3.3: RAUPEX UV Shield Pipe Pressure and Temperature Ratings

RAUPEX UV shield Pipe

Maximum Pressures and Temperatures Design Factors

[email protected]°F(1055kPa@23°C) 0.50(perASTMF876,CSAB137.5)

100psi@180°F([email protected]°C) 0.50(perASTMF876,CSAB137.5)

80psi@200°F([email protected]°C) 0.50(perASTMF876,CSAB137.5)

REHAUdefinesElevated Temperature Applicationsasthosewithoperatingconditionsgreaterthan180°F(82.2°C).WhenRAUPEXpipesareplannedtobeoperatedinconditionsgreaterthan180˚F(82.2°C),thedesignermustsufficientlyconsiderthethermalandoxidativestabilityperformanceofthepipingmaterialtoensurethePEXapipedesignwillmeetprojectserviceliferequirements.

For Elevated Temperature Applications,REHAUadvisesagainsttheuseofastressreductiondesignfactorthatlowerstheoperatingpressureasitmaynotsufficientlyaccountforthermaloroxidativedegradation.

REHAUappliesaservicelifemethodologyforRAUPEXpipesdrawnfromASTMF876,CSAB137.5,ISO9080andMiner'sruleaccordingtoDIN13760todeterminethewarrantyperiod.RAUPEXpipesshouldalwaysbeoperatedatorbelowtheREHAUpublishedtemperatureandpressureratings.

Whentheoperatingconditionsarelessthanorequalto180°F(82.2°C),thenaccordingtotheREHAU PEXa Limited Warranty thewarrantyperiodforRAUPEXpipeis25years.WhenRAUPEXpipesare operated in Elevated Temperature Applications,wheretheoperatingconditionsaregreaterthan180°F(82.2°C),contactREHAUEngineeringtoverifyyouroperatingconditionscomplywiththerequirementsintheREHAU PEXa Limited Warrantyforawarrantyperiodof25years.

3.5 Excessive Temperature and Pressure CapabilityTemperatureandpressure(T&P)reliefvalvesaresafetymechanismsincasethesystemoverheats(mandatoryinhotwaterdistributionsystems).Thesevalvesactquicklytorelieveexcesstemperatureorpressureifeitheroneoftheseconditionsisreached.IntheeventofawaterheatingsystemfailureorT&Preliefvalvefailure,RAUPEXpipehasbeentestedtoaccommodateshort-termexposureconditionsof210°F(99°C)at150psi(10bar)for48hours.

NOTICEFailuretofollowpressureandtemperaturelimitsmaydamagethepiperesultinginleaksandoperationalfailures,andwillnegateanywarrantyprovidedbyREHAUforRAUPEXpipes.Thedesignermustincorporatepropercontrolsintothesystemtoensurethepressureandtemperaturecapabilityofthepipeisnotexceeded.

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3.6 Corrosion ResistanceRAUPEXpipeisnon-reactiveanddisplaysexcellentcorrosionresistance.Corrosionisaprocessthatrequireselectricallyconductivematerialsandoccursonmetals.PEXa,beingadielectric,doesnotcorrodelikemetalpipes.PEXaalsoresiststhebuildupofscalewhichiscommonwithcopperpipe.

3.7 Chlorine ResistanceRAUPEXpipehasbeentestedinaccordancewithASTMF2023,Standard Test Method for Evaluating the Oxidative Resistance of Crosslinked Polyethylene (PEX) Tubing and Systems to Hot Chlorinated Water asrequiredinASTMF876.RAUPEXpipeexceedstheminimumextrapolatedtestlifetimeascertifiedbyNSFandPPIforcoldwaterapplications,intermittenthotwaterapplicationsandtimedhotwaterapplications.

Basedonthistesting,whenusingRAUPEXUVshieldpipeforplumbingapplicationswithoutcontinuoushotwaterrecirculation,thefollowingwaterqualityconditionsmustbemet:-ThepHofwateris7.0orhigher-Theconcentrationoffreechlorineis4.0ppmorlower-Watertemperatureis140°F(60°C)orlower-Waterpressureis80psig(550kPa)orlower-Oxidativereductionpotential(ORP)of825mVorlower

ThisrecommendationappliestoRAUPEXUVshieldplumbingpipesforcoldwaterandintermittenthotwaterapplications(25%@140°F,75%@73°F)andfortimedhotwaterrecirculationsystemsforupto12hoursperday(50%@140°F,50%@73°F).TheASTMF876standardincludesdesignationcodesfortheseapplicationswhichareincludedontheprintlineofRAUPEXpipes.

WhenusingRAUPEXUVshieldpipeforplumbingapplicationswithcontinuoushotwaterrecirculation,thefollowingwaterqualityconditionsmustbemet:-ThepHofthewateris7.9orhigher-Theconcentrationoffreechlorineis2.4ppmorlower-Watertemperatureis140°F(60°C)orlower-Waterpressureis80psig(550kPa)orlower-Oxidativereductionpotential(ORP)of750mVorlower

Iftheseconditionsarenotmet,itisnecessarytoincorporateatimecontrolsothesystemoperatesatamaximum50%@140°Fand50%@73°F.

Itshouldalsobenotedthatinrareandisolatedcases,othercharac-teristicsofthemakeupofdrinkingwatercanimpactthelong-termperformanceofplumbingsystemcomponentsevenwhenthewaterqualitylevelsarewithinthepermissiblerangesetforthbythe

EPANational Primary Drinking Water RegulationsandtheGuidelines for Canadian Drinking Water QualitybyHealthCanada.Thelicensedinstallingcontractormusthavepracticalexperiencewithintheregionofintendeduse.Inaddition,consultationwiththelocalplumbingauthorityandlocalwaterauthorityregardingtheperformanceofplumbingsystemcomponentsshouldoccurbeforetheselectionandinstallationofsystemswithinthatspecificgeographicregion.Therefore,thespecificapplicationshouldalsobetakenintoconsider-ationwhendesigningandinstallingplumbingsystems.

3.8 Ultraviolet ResistanceAllpolymersaresusceptibletodamagefromexposuretotheultraviolet(UV)radiationinsunlight.PEXpipescanbedesignedtoprotectagainstshort-termUVdamage,butaftersometime,UVradiationwillreducethelifetimeofthepipe.Theextentofthereductiondependsonfactorssuchastemperature,pressureandchlorinationlevelsinpotablewater.

REHAUhasperformedextensivetestingofRAUPEXpipesexposedtonaturalsunlight,leadingtothemaximumUVexposuretimesex-pressedinaccumulateddays.Oncethepipesleavethemanufacturingplant,anyexposuretoUV,includingtransportationandstoragebythewholesaler,ispartoftheaccumulatedexposuretime.

AlthoughASTMF876onlycategorizesupto6monthsofUVresis-tance(MaterialDesignationCode=3306),REHAUhastestedandcertifiedRAUPEXUVshieldpipeaccordingtoASTMF2657forthefollowingmaximumUVexposureperiod:

-RAUPEXred,whiteandblueUVshieldpipe:Maximumexposuretimeofoneyearaccumulated

RAUPEXpipesmustbekeptintheoriginalpackaginguntilthetimeofinstallation.RAUPEXmustnotbestoredoutdoorsandisnotdesignedforpermanentoutdoorexposure(withtheexceptionofnon-exposedburiedapplications).ExcessiveUVexposurewillreducethelifetimeofPEXapipe.

3.8.1 UV Emitted by Fluorescent LampsASTMF2657wasestablishedtotesttotheworstcasescenarioforUVexposurebytestingindirectsunlight.UVemittedbyfluorescentlampsisinsignificantwhencomparedtoUVpresentinsunlight.GELightinghasstated“SolarUVisenormouslymorephotoactiveanddamagingthantheUVfromlinearfluorescentlamps.SolarUVincludesUV-A,UV-BandUV-C.UV-AisnearUV,notveryenergeticandisthebulkofUVemittedbyflorescentlamps.”Therefore,when

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REHAUPEXapipesareinstalledinthepresenceoffluorescentlampstheUVemittedbythoselampsshouldhavenoeffectonthelifetimeofthepipes.Forexample,thereisnoconcernofUVdamageonREHAUPEXapipesinstalledinaboilerroomwherefluorescentlampsarepresent.

NOTICEFailuretofollowmaximumUVexposurelimitsmaydamagethepiperesultinginleaksandoperationalfailures,andwillnegateanywarrantyprovidedbyREHAUforRAUPEXpipes.

3.9 Bend RadiusRAUPEXpipemaybebent,evenwhencold.REHAUsupportbendscanassisttocreatetightbendswithoutkinking.Thetypicalbendradiususedbytheinstalleris8XtheOD.Theminimumbendradiusis5XtheODforcoldbends.Foranevensmallerbendradius,thepipemaybeheatedwithaheatgunandbenttonolessthan3XtheOD.Ifatighterbendradiusisrequired,thenthedesignershouldconsiderusingasmallerdiameterpipe.

Table 3.4: RAUPEX Bend Radius

Bend Radius in (mm)

Pipe Size Typical 8X OD Min. Cold 5X OD Min. Heated 3X OD

3/8in 4.0(102) 2.500(64) 1.500(38)

1/2in 5.0(127) 3.125(79) 1.875(48)

5/8in 6.0(152) 3.750(95) 2.250(57)

3/4in 7.0(178) 4.375(111) 2.625(67)

1 in 9.0(229) 5.625(143) 3.375(86)

11/4in 11.0(279) 6.875(175) 4.125(105)

11/2in 13.0(330) -- --

2 in 17.0(432) -- --

3.10 Chemical CompatibilityWhileRAUPEXpipesareresistanttomanychemicalsthatareusedintypicalplumbingapplications,therearesomechemicalsthatmaydamagethepipe.

Chemicalsthatmaybedamaginginclude(butarenotlimitedto):-Adhesives-Oilorpetroleum-basedproducts-Paints-Solvents-Oxidizingagents-Disinfectants-PVCglues-Solventsandcements

Manyfactors,suchasexposuretime,temperature,pressureandotheroperatingparameters,caninfluencetheperformanceofapipethatisexposedtoachemical.Todeterminetheimpactofaparticularchemical,short-andlong-termpressuretestingmayberequired.Insomecases,apipemayberesistanttoshort-termexposuretothechemical,butnotresistanttocontinuousexposure.Eachchemicalmustbeevaluatedindividually.Itistheresponsibilityoftheinstallingcontractortoverifychemicalcompatibilityofanychemicalswhencomingintocontactwiththepolymermaterial.

3.11 Freeze Break ResistanceTheflexibilityoftheRAUPEXpipeallowsittoexpandaswaterfreezesinthepipeaslongasthepipehasroomtoexpand.Whenthewaterthaws,thepipereturnstoitsoriginalshape.Ifthepipeisnotallowedtoexpand(e.g.,itisencasedinconcrete),itmayburst.

NOTICEDesignersandinstallersmusttakeprecautionstoensurethatpipesdonotfreeze.Frozenpipesmayburstresultinginleaksandoperationalfailures.

3.12 CondensationCondensationoccursonpipeswhenthesurfacetemperatureislowerthanthedewpointoftheenvironment.Thisistypicallyaproblemformetalliccoldwaterpiping.PEXpipehasalowerthermalconductivity(0.41W/m°K)thancopper(401W/m°K)resultinginlessheatlosstothesurfaceandgreaterresistancetocondensationorsweating.Insulationshouldbeappliedtopipingtohelppreventcondensation.

3.13 Pressure LossThepressurelossinthePEXasystemdependsontheflowrate,watertemperaturesandthepropertiesofthefluid.UsetheREHAULoopCAD®Softwarewhichincludesabuilt-incalculatortodeterminepipepressurelossesforthegivenconditions.RefertotheREHAU PEXa Piping Systems Pressure Loss Tablesfortheapplicablepressurelosstablepresentedattypicalflowratesandwatertemperatures.ThepressurelossinPEXacarrierpipeisbasedontheapplicationoftheD’Arcy-WeisbachequationandfluidpropertiesfromASHRAEFundamentals.

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4. EVERLOC+ COMPRESSION-SLEEVE FITTINGS

4.1 Fitting Scope TheEVERLOC+compression-sleevesystemisacold-expansionPEXafittingsystemthatisavailableinpolymerandlead-free(LF)brassandisassembledwithaspeciallydesignedPEXacompressionsleeve.ThefittingisdesignedspecificallyforusewithRAUPEXpipeandmustonlybeassembledwiththeEVERLOC+compression-sleevetools.

EVERLOC+fittingsareavailablein3/8,1/2,5/8,3/4,1,11/4,11/2and2in.sizesandareintendedforusewithRAUPEXSDR9coppertubesize(CTS)pipemanufacturedinaccordancewithASTMF876

ForadetaileddescriptionoftheREHAUsystemcomponents,refertotheREHAUSustainable Building Technology Product Catalog (855.312).

4.1.1 Fitting FeaturesEVERLOC+polymerandlead-free(LF)brassfittingshavethefollowingfeatures:1. Foursealingedges2. Pipe stop3. Fittingcollar4. Tooljawbody

Fig. 4.1: EVERLOC+ fitting features

4.1.2 Fitting and Sleeve MarkingsAllpolymerfittingsincludethefollowingmarksforidentification

OR

Fig. 4.2: Fitting size marking (e.g., 3/4”)

Fig. 4.3: Batch code (e.g., production date)

AllLFbrassfittingsaremarked"REHAU"

Allsleevesincludethefollowingmarksforidentification

-Sleevesize(e.g.,1/2")-Batchcodeforproductiondate

Fig. 4.4: Sleeve markings

1

2

4

3

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4.1.3 Polymer FittingsEVERLOC+polymerfittingsareavailableincouplings,tees,elbows,multi-portteesandplugs.Allpolymerfittingsareproducedfromapolyphenylsulfone(PPSU)materialthatmeetstherequirementsofNSF61forhealtheffectsofdrinkingwatersystemcomponentsandcomplieswiththelead-freerequirementsoftheU.S.SafeDrinkingWaterAct.SeealsoREHAUTechnical Bulletin TB265 EVERLOC+ Polymer Fitting Material - PPSU.

Fig. 4.5: EVERLOC+ polymer fittings

4.1.4 Lead Free (LF) Brass FittingsEVERLOC+LFbrassfittingsareavailableascouplings,tees,elbows,plugsandtransitionfittingstoNPTthreadandcoppersolderconnections.AllmetalfittingsareproducedfromECOBRASS®(UNS69300orCW724R)thatmeetstherequirementsofNSF61forhealtheffectsofdrinkingwatersystemcomponentsandcomplieswiththelead-freerequirementsoftheU.S.SafeDrinkingWaterAct.SeealsoREHAUTechnical Bulletin TB264 EVERLOC+ Lead-free Brass Fitting Material.

Fig. 4.6: EVERLOC+ LF brass fittings

4.1.5 Metal ManifoldsManifoldsare1in.TypeLcopperwithEVERLOC+LFbrassfittingsbrazedintotheheader.

Fig. 4.7: EVERLOC+ metal manifold

4.1.6 PEXa Compression SleevesEVERLOC+compressionsleevesareproducedusingaspeciallyformulatedPEXamaterialandaredesignedspecificallyforusewithEVERLOC+fittingsandRAUPEXpipe.EVERLOC+compressionsleeveshavethefollowingfeatures:-Co-extrudedplatinum-coloredPEcoating-Squarelycutendsthatcanbeslidoverthepipeineitherdirection-Groovedandroughenedinsidesurfaceforlockingthesleeveintoplaceonceslidoverthepipeandfitting

Fig. 4.8: EVERLOC+ compression sleeves

4.1.8 CertificationsTheEVERLOC+compression-sleevesystemiscertifiedtothefollowingstandards:-ASTMF877,Standard Specification for Crosslinked Polyethylene

(PEX) Hot- and Cold-Water Distribution Systems-NSF/ANSI14,Plastic Piping System Components and Related

Materials-NSF/ANSI61,Drinking Water System Components – Health Effects-NSF/ANSI372,Drinking Water System Components – Lead Content-CSAB137.5,Crosslinked polyethylene (PEX) Tubing Systems for

Pressure Applications

11

4.2 Fitting Assembly Beforestartingtheinstallationprocess,readtheEVERLOC+ Compression-sleeve System Product Instructions (855.724).

AssemblingtheEVERLOC+compression-sleevesystemrequirestheuseoftheEVERLOC+compression-sleevetools.OnlymakeEVERLOC+compression-sleevejointswiththesetools.RefertoEVERLOC+ Power Tool Product Instruction Manual (855.725),EVERLOC+ XL Power Tool Product Instruction Manual(855.728)andEVERLOC+ XL Expander Tool Product Instruction Manual(855.729)foracompleteunderstandingofoperation,careanduseoftheEVERLOC+compression-sleevetools.

WARNINGReadtheinstructionmanualfortheEVERLOC+compression-sleevetoolsbeforeuseandfollowallsafetyprecautions-improperusecancauseseriouspersonalinjury.

WARNINGToreducetheriskofpermanenteyeinjury,alwayswearclose-fittingprotectiveeyewearwithsideprotection.Eyewearmustbeimpact-ratedandmarkedascomplyingwithANSIZ87.

NOTICEUseonlyEVERLOC+compression-sleevetoolsforassemblyandinstallation.Useofothertoolswillresultinanimproperlyassembledjoint,whichmayresultinleakingandpropertydamage.

ThebasicprocessofassemblinganEVERLOC+compression-sleevejointisasfollows:-Makeaclean,squarecutoftheRAUPEXpipeusingaRAUPEX

cutter-SlidetheEVERLOC+compressionsleeveovertheRAUPEXpipeensuringthesleeveisaminimumoftwotimesthelengthofthesleevefromtheendofthecutpipetoallowforexpansionofthepipeonly-ExpandtheRAUPEXpipetwice,ensuringtheexpanderheadisrotated1/2ofoneexpanderheadsegmentbetweenexpansions,usingtheEVERLOC+compression-sleevetools-InserttheEVERLOC+compression-sleevefittingintotheexpandedendoftheRAUPEXpipeuntilthepipeistouchingthepipestoponthefitting-CompresstheEVERLOC+compressionsleeveovertheRAUPEXpipeandEVERLOC+compression-sleevefittingusingtheEVERLOC+compression-sleevetools

Requiredassemblytoolsinclude:-RAUPEXcutter-EVERLOC+compression-sleevetools-EVERLOC+expanderheadsandcompressionjaws

4.3 Installation Considerations Someprecautionsandadditionalconsiderationsthatshouldbetakenwheninstallingthesystem.

4.3.1 EVERLOC+ Fitting Removal -EVERLOC+LFbrassfittingsCANbereused,aslongtheribareawasnotdamagedduringremoval.-EVERLOC+polymerfittingsCANNOTbereusedandshouldbediscardedimmediately.-EVERLOC+compressionsleevesCANNOTbereusedandshouldbediscardedimmediately.

Fig. 4.9: DO NOT cut the EVERLOC+ compression sleeve from finished joint

Fig. 4.10: DO NOT cut RAUPEX pipe from fitting

4.3.1.1 Fitting Removal of Completed Joint (LF brass ONLY)IfitisrequiredtoremovetheLFbrassfittingordisassembletheLFbrasscompression-sleevejoint,usethefollowingprocedure:

Ifthefittinghasbeeninsertedintothepipeandthesleevehasbeencompressed,safelyholdthefittingwhileitisheated.Becarefulnottodamagethefittingwiththetool.

1. Heatthesleevedirectlyusingaheatgun.2. Rotatethejointseveraltimeswhileheating.3. Removeheatanduseplierstopullthesleeveoffthefitting,thenimmediatelypullthefittingoutofthepipe.

CAUTIONDonotuseopenflamestodisassemblethejoint.Openflamescancauseinjuryorpropertydamage.

12

Fig. 4.11: Heating EVERLOC+ compression sleeve with heat gun

Fig. 4.12: Removing pipe from LF brass fitting

Forre-assemblyofajoint,thefollowingshouldbeconsidered:-Theendofthepipewherethepreviousfittinghadbeeninstalledmustbecompletelycutoffpriortomakinganewjoint.Cuttingoffaminimumof3in(approximately75mm)isrecommended.

Fig. 4.13: Cut off 3 in. of pipe from end prior to making new joint

4.3.1.2 Fitting Removal of Partially Completed Joint (LF Brass ONLY)Ifthefittinghasbeeninsertedintothepipe,butthesleevehasnotbeencompressed,attempttoremoveitwithoutdamagingthefitting.Iffittingcannotbeeasilyremoved,heat1to11/2in(25to38mm)ofthepipethatcoversthefittingandpullthefittingoutofthepipe.

4.3.2 Protecting EVERLOC+ JointsREHAUpermitsEVERLOC+compression-sleevejoints(polymerandLFbrass)tobeburiedorconcealed.REHAUrecommendsthreadedconnectionsneverbeburiedorconcealedastheymustbeaccessibleforperiodicinspection,perprevailinglocalcodes.

TherequirementtowrapanEVERLOC+jointcandependonmanyfactorsincludinglocationandthepresenceofothermaterialsthatcontactorcancomeincontactwiththejoint.

WhenwrappinganEVERLOC+joint,thefollowingisrequired:-Wrapthejoint,ensuringaminimumof50%overlapofthetape-Avoidwrinklesorkinksinthetapeandensurethejointiscompletelycovered,extendingontothepipeasnecessary-Indicatethelocationofeachjointasrequiredonthe“as-built”drawings

Fig. 4.14: REHAU Protective Tape, Red Fig. 4.15: Linerless Rubber Tape, Black

Note:UseonlyREHAUrecommendedprotectivetapesreferencedinREHAUTechnical Bulletin TB266 Protecting EVERLOC+ Joints.Donotuseothertypesoftapes(e.g.,ducttape,standardelectricaltape)towrapthejoint,aschemicalsintheadhesivemaynotbecompatiblewiththePPSUfittingmaterialorthePEXapipe.

Note:Neveruseheatshrinktubing(e.g.,RAUCROSS)towrapthejoint,astheextremelyhightemperaturesproducedfromaheatgunwillsoftenthepipeandmaycauseittopullawayfromthefitting.

Fig. 4.16: DO NOT use heat shrink tubing for EVERLOC+ joints

4.3.2.1 Concealed in Inaccessible Locations WhenEVERLOC+jointsareconcealedbutarestillinopenairspace(e.g.,behinddrywall),itisnotnecessarytowrapthejoint.However,theinstallershouldensurethefittingdoesnotcomeincontactwithchemicals(e.g.,PVCglues,solventsandcements)thatcoulddamagethefittingmaterial.

4.3.2.2 Buried in a Concrete Slab or sub-base underneath slabWhenburyinganEVERLOC+polymerjointdirectlyinaconcreteslab,orinthesub-baseunderneaththeslab,itisnotnecessarytowrapthejoint.However,therearesomeadditivesinconcreteorchemicalsusedintheinstallationthatcouldpotentiallydamagethefittingmaterial,andinthiscase,wrappingisrecommended.EVERLOC+LFbrassjointsburieddirectlyinaconcreteslaborinthesub-baseunderneaththeslabmustbewrapped.

13

4.3.2.3 Buried in Soil:WhenburyingEVERLOC+jointsinsoil,outsideofastructure,thejointmustbewrapped.

4.3.2.4 With Foaming Agents:Foamingagentsandsolventsinclosed-cellfoaminsulationkitscandamagethePPSUfittingmaterial.Therefore,itisnecessarytowrappolymerfittingsinaprotectivetapetoprotectfrompolyurethanefoams.

4.3.3 Pressure TestingThecompression-sleevejointisreadyforimmediatepressuretestanduseaftercompletionoftheassemblyprocess.Thereisnowaittimeforthesystemtobeputintoservice.SeeSection6.17.2forREHAUpressure test procedures.

4.3.4 Pressure and Temperature RatingsThemaximumtemperatureandpressureratingsoftheREHAUPEXaplumbingsystemareinaccordancewithASTMF877andCSAB137.5forSDR9PEX,asdefinedinSection3.4.

4.3.5 Ultraviolet ResistanceThefittingsandsleevesmustneverbestoredindirectsunlightorstoredoutsideoftheoriginalcardboardpackaging.Inaddition,thesystemisnotintendedforpermanentoutdoorapplicationsorinareaswithcontinuousexposuretoUV.

4.3.6 Freeze Break ResistanceTheflexibilityoftheRAUPEXpipeallowsittoexpandaswaterfreezesinthepipeaslongasthepipehasroomtoexpand.However,thisflexibilitydoesnotensuretheintegrityofthejoint.Therefore,installersmusttakeprecautionstoensurethatpipesandfittingsdonotfreeze.Freezingmayresultinleaksandoperationalfailures.

4.3.7 Chlorine ResistanceEVERLOC+compression-sleevejointshaveachlorineresistanceratingbasedontheratingsofRAUPEXpipe,asdefinedinSection3.7.

4.3.8 Stress Corrosion ResistanceEVERLOC+LFbrassfittingshavebeentestedinaccordancewithNSF/ANSI14andcomplywiththerequirementforstresscorrosionresistance.However,fittingsshouldnotbeexposedtoharmfulchemicalsoraggressivewaterconditionsthatcouldresultinopera-tionalfailures.

4.3.9 Chemical CompatibilityTherearecertainchemicalsthatcandamagetheEVERLOC+compression-sleevesystem.Thisappliestoexternalexposureofchemicalsandtothetransportofsuchchemicalsbythepipingsystem.Chemicalsthatmaydamagethecompression-sleevesysteminclude(butarenotlimitedto):-AdhesivesandtapesotherthanthoserecommendedbyREHAU-Oil/petroleum-basedproducts-Paints,solvents-Oxidizingagents(e.g.,bleach)-Disinfectants(e.g.,separatedosingunitintegratedintobuildingdistributionsystem)-PVCglues,solventsandcements

Fig. 4.17: DO NOT use harmful chemicals near EVERLOC+ fittings

Ensurethattheemployedsealants,cleaningagents,buildingfoams,insulation,protectivetape,adhesivetapeorthreadsealantsdonotcontainanycomponentswhichcausestresscrackingorcorrosion,suchasammonia,ammonia-bearing,aromaticandoxygenatedsolvents(e.g.,ketoneandether),chlorinatedhydrocarbonsorchlorideionswhichcanleach.

Protectsystemsagainstcontacttochemicalsanddamage.Onlyuseleakdetectionagents(e.g.,foamingagents)approvedbytherespectivemanufacturerforPPSUmaterials.Onlyusesealants,threadsealants,cleaningagents,buildingfoams,insulation,protectivetape,adhesivetapeandfluxapprovedbytherespectivemanufacturerforthePPSUmaterials.Checkthecompatibilityofmaterialsforthecorrespondingareaofapplicationwiththemanufacturer.

Contactwitharomaticandoxygenatedsolvents(e.g.,ketoneandether)aswellashalogenatedhydrocarbons(e.g.,chlorinatedhydrocarbons)isnotpermitted.Contactwithwater-basedacrylicpaintsandadhesive/protectiveprimersisnotpermitted.

14

4.3.10 Copper SolderingPropersolderingtechniquesmustbefollowedwhensolderingallcompression-sleevefittingsaccordingtotheCopper Development Association (CDA) Handbook: -Thesurfaceofthefittingsolderingareamustbeproperlycleanedforagoodsolderconnection.Applyingfluxisnotconsideredsufficientcleaningforthesolderingarea.Usingapropersandingorbrushtechniqueisnecessarytoremovethesurfaceoxides.Inordertopreventfurtherformationofoxides,thefluxshouldbeappliedimmediatelyafterthecleaningprocess.Aproperfluxthatiscompatiblewiththebrassalloymustbeused.-Caremustbetakentonotoverheatthesolderingsurfaceasthiscanleadtotheformationofoxidespreventinggoodadhesionofthesoldermaterial.Itisimperativethatthefittingisheatedevenlyaroundtheentiresurfacesoastonotoverheatoneparticulararea.-Allcompletedsolderjointsmustbetestedforjointintegrityfollowingtheproceduresprescribedbyprevailinglocalcodes.

4.4 EVERLOC+ Compression-sleeve ToolsAssemblingtheEVERLOC+compression-sleevesystemrequirestheuseoftheEVERLOC+compression-sleevetools.OnlymakeEVERLOC+compression-sleevejointswiththesetools.

Beforeuse,readandunderstandthefollowingsafetysymbolswhicharefoundontheEVERLOC+compression-sleevetools.

SafetyAlertSymbol–Toreducetheriskofinjury,followthespecifiedsafetyinstructions.

Readandfollowallsafetyprecautionsintheinstructionmanual.Improperusecanleadtoseriouspersonalinjuryorpropertydamage.

Toreducetheriskofseriouseyeinjury,alwayswearproper eye protection.

Riskofelectricshock.Neveroperatethepowertoolindamporwetconditions.Neverexposetorainorsubmergeinwaterorotherliquids.Neveroperatethepowertoolnearwiresorcablescarryingelectriccurrent.

Toreducetheriskofseverepersonalinjury,includingcrushandlacerationinjury,keepfingers,handsandallpartsofyourbodyawayfromtheexpanderhead,hydraulicslideandcompressionjawsduringoperation.

NOTICEUseonlyEVERLOC+compression-sleevetoolsforassemblyandinstallation.Useofothertoolswillresultinanimproperlyassembledjoint,whichmayresultinleakingandpropertydamage.

4.4.1 EVERLOC+ Power Tool 3/8 to 1 in.ForassemblyofEVERLOC+fittingsinsizes3/8through1in.UsetheEVERLOC+powertool.RefertoEVERLOC+ Power Tool Product Instruction Manual (855.725)foracompleteunderstandingofoperation,careanduseofthetool

Fig. 4.18: EVERLOC+ power tool

EVERLOC+powertoolstandardkit:-EVERLOC+powertool-Expansionadapter-1/2,3/4and1in.EVERLOC+expanderheads(quickchange)-1/2,3/4and1in.EVERLOC+compressionjaws-DEWALT®12VLi-ionbattery(DCB127)(2batteriesperkit)-DEWALT12V/20VLi-ioncharger120VAC(DCB107)-DEWALT12V/20VLi-ionBatteryChargerInstructionManual-Pipe cutter-Lubricant-Cleaningbrush-Tool case-Product Instruction Manual

Fig. 4.19: EVERLOC+ power tool standard kit

AvailableAccessories:-3/8in.expanderhead(quickchange)-3/8in.compressionjaws-5/8in.expanderhead(quickchange)-5/8in.compressionjaws

15

4.4.2 EVERLOC+ XL Power Tool 1 1/4 to 2 in.AssemblingtheEVERLOC+compression-sleevesystemwithdiametersof11/4through2in.requirestheuseoftheEVERLOC+XLpowertool.Refertothe EVERLOC+ XL Power Tool Product Instruction Manual(855.728)foracompleteunderstandingofoperation,careanduseofthetool.

Fig. 4.20: EVERLOC+ XL power tool

EVERLOC+XLpowertoolstandardkit:-EVERLOC+XLpowertool-Expansionadapter-11/4,11/2and2in.EVERLOC+expanderheads(quickchange)-11/4,11/2and2in.EVERLOC+compressionjaws-MAKITA®18VLi-ionbattery(BL1840B)(2batteriesperkit)-MAKITA18VLi-ioncharger120VAC(DC18RC)-MAKITA18VLi-ionBatteryChargerInstructionManual-Pipe cutter-Lubricant-Cleaningbrush-Toolcase(blacklatches)-Product Instruction Manual

Fig. 4.21: EVERLOC+ XL power tool standard kit

AvailableAccessories:-EVERLOC+XLexpandertoolstandardkit-EVERLOC+XLexpanderbasetool

4.4.3 EVERLOC+ XL Expander Tool 1 1/4 to 2 in. InadditiontotheEVERLOC+XLpowertool,theEVERLOC+XLexpandertoolcanbeusedfortheexpansionstepsofthe11/4to2in.fittingassemblyprocess.UseofthistoolinadditiontotheXLpowertoolallowsforgreaterefficiencyinsomeinstallationsituations.RefertotheEVERLOC+ XL Expander Tool Product Instruction Manual (855.729)foracompleteunderstandingofoperation,careanduseofthetool.

Fig. 4.22: EVERLOC+ XL expander tool Fig. 4.23: EVERLOC+ XL expander tool

standard kit

EVERLOC+XLexpandertoolstandardkit:-EVERLOC+XLexpandertool-MAKITA18VLi-ionbattery-MAKITA18VLi-ionBatteryChargerInstructionManual-Lubricant-Cleaningbrush-Toolcase(graylatches)-Product Instruction Manual

AvailableAccessories:-EVERLOC+XLpowertoolstandardkit-EVERLOC+expanderheads(quickchange):

11/4in.,Art.105078-001;11/2in.,Art.105079-001;and2in.,Art.105080-001

-Largeratchetcutter,Art.131558-001

16

5. DESIGN CONSIDERATIONS

5.1 Pipe SizingThedesignandlayoutofthebuildinghot-andcold-waterdistributionsystemshallcomplywithacceptedplumbingengineeringpracticeandasperprevailinglocalcodes.

TheREHAUPEXaplumbingsystemconsistsofRAUPEXUVshieldPEXapipeandtheEVERLOC+compression-sleevefittingsystemandcanbedesignedandsizedperthefollowingmodelplumbingcodes:

-ICCInternationalPlumbingCode(IPC)-ICCInternationalResidentialCode(IRC)-IAMPONationalStandardPlumbingCode(NSPC)-IAPMOUniformPlumbingCode(UPC)-NRCCNationalPlumbingCodeofCanada(NPCC)

Inaddition,aproperlydesignedplumbingsystemshouldfollowtheengineeringprinciplesaspertheAmericanSocietyofPlumbingEngineers(ASPE)Plumbing Engineering Design Handbook Volume II orequivalent.

Forsizingasysteminresidentialandlightcommercialbuildings,usethewatersupplyfixtureunit(WSFU)methodtodeterminetherequiredload(GPM)andresultingpipesizeaspublishedinthemodelplumbingcodes.Alternatively,orinlargerbuildings,theuniformfrictionheadlossmethodcanbeutilized.

5.1.1 Standard Dimension RatioRAUPEXpipeisinaccordancetothedimensionalstandardsinASTMF876andCSAB137.5.RAUPEXiscoppertubesize(CTS)outsidediameter(OD)whichmeansthattheactualODofthepipeis1/8in.(3.18mm)largerthanthenominalsize.

Wallthicknessisdefinedbythestandarddimensionalratio(SDR).RAUPEXUVshieldpipeisSDR9,whichequatestotheoutsidediameterbeingapproximatelyninetimesthewallthickness.SincePEXpipehasathickerwallthancoppertube,theinsidediameter(ID)isslightlysmaller.However,sincePEXpipeisnotsusceptibletotheerosionandcorrosionissuesofcoppertube,plumbingsystemscanbedesignedathighervelocitieswhichallowforcomparablesizingofasystem.

5.1.2 Determining Friction LossThepressurelossfortheREHAUPEXaplumbingsystemcanbecalculatedusingtheREHAU PEXa Piping Systems Pressure Loss Tables (855.861)availableonlineontheREHAUResourceCenterorusingtheREHAULoopCADsoftwarepressurelosscalculatortool.

5.1.3 Velocity ConsiderationsThemaximumvelocityofwaterflow(feet/second–fps)intheplumbingsystemshouldbeconsideredwhensizingaREHAUPEXaplumbingsystem.Todeterminethepipesize,theWSFUloadcanbecorrelatedtoflowrate(GPM)fromtablespublishedinthemodelplumbingcodes.

Oncetheflowrateisdetermined,thepipecanbesizedbasedontheallowablemaximumvelocitiesperprevailinglocalcodes.

Thedesignercanusethefollowingtablesasaguideline:

Table 5.1: Maximum Velocity of Water Flow

Cold-Water

Piping

- Typicalplumbingcodesstatemaximumvelocityof8ft/sec

- REHAUrecommendsamaximumdesignvelocityof10ft/sec

Hot-Water

Piping

- Typicalplumbingcodesstatemaximumvelocityof5ft/sec

- REHAUrecommendsamaximumdesignvelocityof8ft/sec

Hot-Water

Recirculation

Return Piping

-Maximumvelocityof2ft/sec

-Maximumoperatingtemperatureof140°F(60°C)

Table 5.2: GPM per Pipe Size

Pipe SizeGPM

@ 2 fpsGPM

@ 5 fpsGPM

@ 8 fpsGPM

@ 10 fps

3/8in 0.6 1.6 2.5 3.2

1/2in 1.1 2.9 4.6 5.8

3/4in 2.3 5.7 9.1 11.3

1 in. 3.8 9.4 15.0 18.8

11/4in 5.7 14.0 22.3 28.1

11/2in 8.0 19.7 31.3 39.1

2 in 13.7 33.4 53.8 67.1

17

5.2 Equivalent Length of FittingsItiscommonpracticefordesignerstoconvertthepressuredropacrossfittingstoanaverageequivalentlengthofpipe.Theseequivalentlengthsareaddedtothetotalpipelength.Designerscancalculatetotalpressurelossusingthisadjustedpipingsystemlength.

Table 5.3: Equivalent Length of Fittings

CouplingsFitting Description Equivalent Length (ft)

3/8x3/8in.EVERLOC+LFBrassCoupling 1.1

1/2x1/2in.EVERLOC+PolymerCoupling 0.4




1x3/4in.EVERLOC+PolymerCoupling 2.7

1x1in.EVERLOC+PolymerCoupling 1.1


11/4x1in.EVERLOC+PolymerCoupling 4.0


11/2x1in.EVERLOC+PolymerCoupling 4.8


2x1/2in.EVERLOC+LFBrassCoupling 3.5


2x1in.EVERLOC+LFBrassCoupling 5.2



2x2in.EVERLOC+PolymerCoupling 2.2

Elbows (PEX to PEX)Fitting Description Equivalent Length (ft)

1/2x1/2in.EVERLOC+PolymerElbow 1.9

5/8x5/8in.EVERLOC+LFBrassElbow 5.4


1x1in.EVERLOC+PolymerElbow 10.7



11/2x11/2in.EVERLOC+LFBrass45°Elbow 3.4

2x2in.EVERLOC+PolymerElbow 24.2

Tees

Fitting Description

Equivalent Length (ft)

RUN

Equivalent Length (ft) BRANCH

1/2x1/2x1/2in.EVERLOC+PolymerTee 0.8 4.4

1/2x1/2x3/4in.EVERLOC+PolymerTee - 4.1





3/4x3/4x1in.EVERLOC+PolymerTee - 6.8

1x1x1/2in.EVERLOC+PolymerTee 1.6 3.9

1x3/4x3/4in.EVERLOC+PolymerTee 2.8 6.5

1x3/4x1in.EVERLOC+PolymerTee 3.1 10.9

1x1x3/4in.EVERLOC+PolymerTee 1.2 6.7

1x1x1in.EVERLOC+PolymerTee 1.6 10.6

11/4x1x3/4in.EVERLOC+LFBrassTee 3.7 5.4

11/4x1x1in.EVERLOC+PolymerTee 3.8 9.7


11/4x11/4x1/2in.EVERLOC+LFBrassTee 0.8 5.0


11/4x11/4x1in.EVERLOC+PolymerTee 2.3 10.1



11/2x1x1in.EVERLOC+LFBrassTee 5.5 7.9



11/2x11/4x1in.EVERLOC+LFBrassTee 4.4 8.1





11/2x11/2x1in.EVERLOC+PolymerTee 2.2 9.1



2x11/4x2in.EVERLOC+LFBrassTee 6.7 14.9

2x11/2x3/4in.EVERLOC+LFBrassTee 5.8 5.7





2x2x1/2in.EVERLOC+LFBrassTee 1.1 5.0






18

Elbows (PEX to transition)

Fitting DescriptionEquivalent Length (ft)

1/2x1/2in.CMaleor3/8in.CFemaleEVERLOC+LFBrassElbow 7.4

1/2x1/2in.CFemaleEVERLOC+LFBrassElbow 7.2

3/4x3/4in.CFemaleEVERLOC+LFBrassElbow 7.1

3/4x3/4in.CMaleEVERLOC+LFBrassElbow 7.4

1/2x1/2in.MPTEVERLOC+LFBrassDropEarElbow 7.6

1/2x1/2in.FPTEVERLOC+LFBrassDropEarElbow 4.9

3/4x3/4in.MPTEVERLOC+LFBrassElbow 7.5

3/4x3/4in.MPTEVERLOC+LFBrassDropEarElbow 7.7

3/4x3/4in.FPTEVERLOC+LFBrassDropEarElbow 9.0

1x1in.FPTEVERLOC+LFBrassDropEarElbow 13.6

Adapters (PEX to copper)


1/2x1/2in.CFemaleEVERLOC+LFBrassAdapter 2.3

1/2x1/2in.CMaleor3/8in.CFemaleEVERLOC+LFBrassAdptr 2.4


3/4x1/2in.CMaleEVERLOC+LFBrassAdapter 0.3


3/4x1in.CFemaleEVERLOC+LFBrassAdapter 3.9



1x1in.CFemaleEVERLOC+LFBrassAdapter 3.5

1x1in.CMaleEVERLOC+LFBrassAdapter 3.3





2x2in.CFemaleEVERLOC+LFBrassAdapter 7.0

2x2in.CMaleEVERLOC+LFBrassAdapter 6.9

Adapters (PEX to MPT/FPT)


3/8x1/2in.MPTEVERLOC+LFBrassAdapter 2.4

1/2x1/2in.FPTEVERLOC+LFBrassAdapter 2.8



5/8x3/4in.MPTor1/2in.CFemaleEVERLOC+LFBrassAdptr 3.6

3/4x3/4in.FPTEVERLOC+LFBrassAdapter 2.8


3/4x1in.MPTEVERLOC+LFBrassAdapter 4.3

1x3/4in.FPTEVERLOC+LFBrassAdapter 0.1

1x1in.FPTEVERLOC+LFBrassAdapter 3.6

1x1in.MPTEVERLOC+LFBrassAdapter 3.8



2x2in.MPTEVERLOC+LFBrassAdapter 7.3

5.3 Piping Layouts Mostpipinglayoutdesignsutilizesomeformofreducingteeinordertobranchfromamaintrunklinetosmallerpipediametersthatroutetofixturesandappliances.TheflexibilityofRAUPEXpipeallowsyoutoeasilyroutearoundobstaclesandreducethenumberoffittingsneeded.Multi-portteesfunctionlikereducingtees,butreducethenumberofconnectionpoints.Ingeneral,thebestsystemdesignsutilizetheflexibilityoftheRAUPEXpipeandminimizeconnections.

5.3.1 Tee and Branch-IncreasesinstallationspeedbytakingadvantageoftheflexibilityofPEXapipe-Reducespressureatthefurthestfixture-Similartotraditionalrigidpipeinstallationlayouts-Reduceshotwaterwaittime,comparedtoahome-runsystem

Parts list:-Reducingtees-Straighttees-Straightorcoiledpipe

Fig. 5.1: Tee and branch piping layout

19

5.4 Thermal Expansion and ContractionWhenthermalexpansionisanticipated,pipemovementshouldbecontrolledtoavoidchangesthatcoulddamagethepipingsystem.Anchoringanduseofexpansionloopsmaybeusedtoaccomplishthis.Allowingforcontrolledexpansionandcontractioninmultiplepartsofapipingsystemisanacceptedmeansofpreventingaddedstressesinotherpartsofthesystem.

RAUPEXpipingsystemsexhibitahigherexpansionandcontractionratewhensubjectedtochangesintemperatureascomparedtometallicpipingsystems.Becauseofitslowermodulusofelasticity,RAUPEXpipeislessrigidthanmetallicpipinganddevelopslessforcethanmetallicpipewhenexposedtotemperaturechanges.

5.4.1 Calculating Thermal Expansion of RAUPEX PipeWhenapipeisanchoredatoneendbutcanotherwisefreelymoveintheaxialdirection,anincreaseintemperaturecausesthepipetoincreaseinoveralllength.Adecreaseintemperaturecausesadecreaseinlength.

Thefollowingequationpredictsthenetexpansion/contractioninthelengthofafullyunrestrainedpipethatoccursinconsequenceofagivenchangeintemperature:

(1)

where,ΔL=changeinpipelength,in.α=coefficientoflinearexpansion/contraction,in/ft°FL=initialpipelength,in.ΔT=changeinpipetemperature,°FNote:SeeTable3.1forcoefficientoflinearexpansion

5.4.2 Calculating L-bend and U-bend for RAUPEX PipeRAUPEXpipewillexpandandcontractwhenheatedorcooledduetoachangeinwatertemperatureorambienttemperature.ThermalexpansionofRAUPEXpipemustbeconsideredinthedesignandinstallationofthepipingsystem.Fixedanchorpoints,guidesandexpansionloopsshouldbeutilizedtoaccountfortheexpansionandcontractionofthepipetopreventanydamagetothepipingsystem.

5.3.2 Multi-port Tee-Minimizesnumberofconnections-Combinesteeandbranchandhome-runconcepts-Systemsarepressure-balancedateachmanifold-Reduceshotwaterwaittime,comparedtoahome-runsystem

Parts list:-Flow-throughmulti-porttees-Closed-endmulti-porttees-Straightorcoiledpipe

Fig. 5.2: Multi-port tee piping layout

5.3.3 Home-run-Generallyforresidentialinstallations-Eliminatesmostfittings-Balancespressuretoallfixtures-Increaseshotwaterwaittime,comparedtoteeandbranchandremotemulti-portdesigns-Usesmorepipe-Mayrequiremoreholestobedrilledinjoistspaces

Parts list:-Multi-porttees-Straightorcoiledpipe

Fig. 5.3: Home-run piping layout

20

Fig. 5.4: L-bend and U-bend

CalculationofthelengthofoffsetforanL-bendorwidthandheightofaU-bendcanbedeterminedasfollows,whereL=lengthofoffsetlegforL-bend(ft),perASHRAE2016 Chap 46 Pipe, Tubes and Fittings

(2)

D=actualpipeoutsidediameter(in),sourceforRAUPEXisTable3.2E=modulusofelasticity(psi),sourceforRAUPEXisTable3.1C=constant,144(in²/ft²)S

A=allowablestressrange

andΔ=anchor-to-anchorthermalexpansionorcontraction(in)

(3)

where,α=coefficientoflinearexpansion([in/[ft°F]),sourceforRAUPEXisTable3.1dT=temperaturedifferential(°F)L

FP=singleplanelengthbetweenfixedpoints(anchors)(ft)

ThewidthofaU-bendiscalculatedwiththefollowingequation,whereW=widthofU-bend(ft),perASHRAE2016 Chap 46 Pipe, Tubes and Fittings

(4)

TheheightofaU-bendiscalculatedwiththefollowingequation,whereH=heightofU-bend(ft),perASHRAE2016 Chap 46 Pipe, Tubes and Fittings

(5)

5.4.3 RisersAlwayscomplywithprevailinglocalcodesregardingtheuseofPEXpipeinriserapplications.RAUPEXshouldbesupportedverticallyeveryfloor(notexceeding10ft[3.048m]perfloor).Apipeguideshouldbeusedmidwaybetweenverticalsupports.Themid-storyguidesdonotsupporttheweightofthepipe;theykeepitfrommovinghorizontallywhenthepipeexpands.

Note:ThesearetheminimumrequirementsoftheUMC,UPC,IMC,IPCandIRC.

Whenitcomestohydronicrisers,thegoalistocontrolexpansionandcontractionforcesinsidethewallcavityandupholdtheintegrityofthefirestop.Toaccomplishthis,ariserclampshouldbeplacedatthefloorandbaseofeachlevel,alongwithamid-storyguide.Pipingrunsmustcomplywithsupportspacingasdefinedbytheprevailinglocalcodes.

FP=FixedPoint

SP=SlidingPoint(Guide)

𝐿 = �3𝛥𝐷𝐸𝐶𝑆𝐴

𝛥 = 𝛼 ∗ 𝑑𝑇 ∗ 𝐿𝐹𝑝

𝑊 =𝐿5

𝐻 = 2𝑊

21

5.5. Installation in Fire-rated AssembliesIncommercialandresidentialapplications,fire-ratedwallandfloor/ceilingassembliesareanessentialcomponentoftheoverallfireresistantconstructionforthebuilding.Themodelbuildingcodesdefinetherequirementsfortheseratedassemblies,whichincludesthetypeofconstruction(framedorconcrete),thefireratingoftheassembly(2hours,forexample),andloading.

Forplumbinginstallations,itiscommontoroutethepipingthroughtheseratedassemblies.Inthiscase,themodelbuildingcodesrequirethattheinstalledcomponentsdonotdiminishtheoverallratingoftheassembly.Therefore,REHAUhascompletedaseriesoffiretestswithULandULCtoevaluatetheperformanceofREHAUpipinginthesetypesofinstallations.

Basedonthisextensivetesting,ithasbeendemonstratedthattheinclusionofRAUPEXpipeshouldnotadverselyaffecttheoverallfireratingoftheassembly.RAUPEXpipeisULandULCListedforinstallationinfire-ratedassemblieswhichincludesreinforcedconcreteslabs,wood-framedfloor/ceilingassemblies,framedbearingwalls,andframednon-bearingwalls.ThislistingcoversUVshieldpipesinsizes3/8through2in.

ThefireresistancelistingsforRAUPEXpipehavebeentestedtoandmeetthefollowingstandards:-ANSI/UL263,Fire Tests of Building Construction and Materials -CAN/ULC-S101,Standard Methods of Fire Endurance Tests of

Building Construction and Materials

ThefollowingdesignlistingscanbefoundontheULandULConlinecertificationsdirectory(www.ul.com and www.ulc.ca).

Table 5.4: Fire-rated Assembly Design Listings

Assembly Description UL Design No. ULC Design No.

ReinforcedConcreteSlab No.K917 No. J900

WoodFramedFloor/CeilingAssembly No.L588 No.M516

CombustibleBearingWall No.U383 No. W316

CombustibleNon-bearingWall No.V461 No.W458

WhenusingRAUPEXpipeinthesetypesofapplications,thespecify-ingengineeranddesignershouldevaluatethedesignlistingstoensureprevailinglocalcoderequirementsaremet.Inadditiontheauthorityhavingjurisdictionshouldreviewandapprovethedesignbeforeinstallation.

5.5.1 Firestop SystemsInaccordancewithmodelbuildingcodes,whenRAUPEXpipepenetratesthroughafire-ratedassembly(i.e.,floor,ceiling,wall)thepenetrationmustbeprotectedbyanapprovedthrough-penetrationfirestopsystem.Thisfirestopsystemshallbetestedinaccordancewithoneorallofthefollowingstandardsandlistedbyanindependentthird-partylistingagencysuchasUL,ULCorITS(WarnockHersey).Thefirestopsystemshallmeetalllocalcoderequirementspriortoinstallation.

Mostcommonfirestopsystemstandardsare:-ASTME814,Fire Tests of Through-Penetration Firestops-UL1479,Fire Tests of Through-Penetration Firestops-CAN/ULCS115,Tests of Fire Resistance of Building Joint Systems

SeveralsuchsystemsarecommonlyavailableacrossNorthAmerica.InordertochooseanapprovedfirestopsystemforeachspecificapplicationwhereaPEXpipepenetratesafire-ratedassembly,thefollowinginformationmustfirstbeknown:-NominalsizeofPEXpipepenetratingthefire-ratedassembly-NumberofPEXpipespenetratingthroughoneopening-Typeofassemblybeingpenetrated(i.e.floor,wall,ceiling)-Constructionoffire-ratedassembly(i.e.wood,concrete)-The"F"and"T"ratingsofthefire-ratedassembly

Fig. 5.5: RAUPEX pipe is fire-stopped at both points of entry through the assembly

Todetermineaproductthatislocallyavailableandcorrectfortheassemblytype,REHAUrecommendscustomerscontactlocalfirestopproductsupplierstodeterminewhichoftheirfirestopproductsarelistedfortheintendedassemblywithPEXpipe:

22

5.5.2 Installation in Plenum Space (United States)Aplenumisdefinedasanenclosedportionofthebuildingstructurethatisdesignedtoallowairmovement,therebyservingaspartofanairdistributionsystem.Plenumscanserveassupply,return,exhaustandventilationportionsoftheairdistributionsystem.

TheInternationalMechanicalCode(IMC)andUniformMechanicalCode(UMC)requirethatcombustiblematerialsinstalledwithinairplenumshaveaflamespread(FS)indexofnotmorethan25,andasmokedeveloped(SD)indexofnotmorethan50.Thesenumbersdonotcontainunits,andareusedasindex(comparative)ratingsofhowquicklybuildingmaterialsburnandhowmuchsmokeisdevelopedwhentheyburn.Pipesthatmeettheserequirementsaresometimessaidtohavea"plenumrating."

Theflamespreadindexandthesmokedevelopedindexaremeasuredduringastandardizedlaboratorytestthatburnscombustiblepipeandmeasuresthespeedofflamespreadandvolumeofsmokedeveloped.TheIMCandUMCspecifythattheflamespreadindexandthesmokedevelopedindexofamaterialaretobedeterminedbasedononeofthefollowingstandards:-ASTME84,Standard Test Method for Surface Burning Characteris-

tics of Building Materials, or-UL723, Test for Surface Burning Characteristics of Building

Materials

REHAURAUPEXpipesandEVERLOC+polymerfittings(1/2to2in.)havereceivedlistingsthroughNSFInternationaltotheASTME84standard.

Table 5.5: Flame Spread/Smoke Developed ≤ 25/50 RAUPEX Pipe

Pipe Description

ASTM E84 18 in. spacing

FS/SD

≤3/4in.RAUPEXUVshield FS≤25/SD≤50

Table 5.6: Flame Spread/Smoke Developed ≤ 25/50 RAUPEX Pipe with REHAU Galvanized Support Channel

Pipe Description

ASTM E84 Galvanized support channel

FS/SD

3/4to2in.RAUPEXUVshield FS≤25/SD≤50

Table: 5.7: Flame Spread/Smoke Developed ≤ 25/50 RAUPEX Pipe and EVERLOC+ Polymer Fittings with 1/2 in. Thick Fiberglass Insulation

Pipe Description

ASTM E84 Wrapped in 1/2 in. thick fiberglass

insulation FS/SD

≤2in.RAUPEXUVshieldFS≤25/SD≤50

≤2in.EVERLOC+polymerfittings

RAUPEXUVshieldpipeshavealsobeenevaluatedtoUL2846forplasticwaterdistributionplumbingpipeforvisibleflameandsmokecharacteristics.WhencoveredwithUL-classifiedpipeandequipmentcoveringmaterial,RAUPEXUVshieldpipeexhibitspeakopticaldensitiesof0.5orless,maximumaverageopticaldensitiesof0.15orless,andmaximumflame-propagationdistancesof5ftorless.-UL2846,Fire Test Of Plastic Water Distribution Plumbing Pipe For

Visible Flame And Smoke Characteristics

Table 5.8: Optical Density and Flame Propagation with UL-classified Pipe and Equipment Covering Material

Pipe Description

UL 2846Pipe covered with UL Classified Pipe and

Equipment Covering Material

≤2in.RAUPEXUVshield FS≤25/SD≤50

23

5.5.3 Installation in Plenum Space (Canada)TheNationalBuildingCodeofCanada2015(NBCC-2015)requiresthatcombustiblematerialsinstalledwithinairplenumshaveaflamespread(FS)ratingofnotmorethan25,andasmokedeveloped(SD)classificationofnotmorethan50.Thesenumbersdonotcontainunits,andareusedasindex(comparative)ratingsofhowquicklybuildingmaterialsburnandhowmuchsmokeisdevelopedwhentheyburn.Pipesthatmeettheserequirementsaresometimessaidtohavea"plenumrating".

TheNBCC-2015specifiestheflamespreadratingandthesmokedevelopedclassificationofamaterialistobedeterminedbasedonthefollowingstandard:-CAN/ULCS102.2-2010,Standard for Surface Burning Characteris-

tics of Flooring, Floor Covering and Miscellaneous Materials and Assemblies (Canada)-Localcoderequirementsmayvaryforeachlocation.Theengineer/installerisresponsibleforverifyingprevailinglocalcodesaremetprior to installation.

RAUPEXpipesandEVERLOC+polymerfittings(3/8to2in.)havebeentestedtothelatestversionofCAN/ULCS102.2-2010.Basedonthistesting,thefollowingsizesandtypesofRAUPEXpipesandpolymerfittingshaveobtainedalistingaccordingtoCAN.ULCS102.2-2010withnominimumpipespacingrequirements.

5.5.3.1 CAN/ULC S102.2-2010


Pipe Description

CAN/ULC S102.2-2010No spacing requirements

FS/SD

3/8to1/2in.RAUPEXUVshield FS≤25/SD≤50

Table 5.10: Flame Spread/Smoke Developed ≤ 25/50 RAUPEX Pipe and EVERLOC+ Polymer Fittings with 1/2 in. Thick Fiberglass Insulation

Pipe Description

CAN/ULC S102.2-2010pipe wrapped in 1/2 in.

fiberglass insulationNo spacing requirements

FS/SD

≤2in.RAUPEXUVshieldFS≤25/SD≤50

≤2in.EVERLOC+polymerfittings

Table 5.11: Flame Spread/Smoke Developed ≤ 25/50 RAUPEX Pipe with 1/2 in. Thick Armaflex Insulation

Pipe Description


thick Armaflex insulation No spacing requirements

FS/SD

1to2in.RAUPEXUVshield FS≤25/SD≤50

ThecurrenteditionoftheNationalBuildingCodeofCanadapermitstheuseofRAUPEXpipeinplenumsperthefollowingsections:-2015NationalBuildingCodeofCanada,Section3.6.4.3(1)Plenum

Requirements-2015NationalBuildingCodeofCanada,Section3.1.5.19(2)

Combustible Piping Materials

5.5.3.2 CAN/ULC S102.2-2007Insomeareas,localprovincialcodeshavenotbeenupdatedtothe2015editionoftheNationalBuildingCodeofCanada.Wheretheselocalcodesprevail,usethefollowinginformation:


Pipe Description

CAN/ULC S102.2-200718 in. spacing

FS/SD

3/8to3/4in.RAUPEXUVshield FS≤25/SD≤50

Table 5.11: Flame Spread/Smoke Developed ≤ 25/50 RAUPEX Pipe with 1/2 in. Thick Fiberglass Insulation

Pipe Description


thick fiberglass insulation No spacing requirements

FS/SD

1to2in.RAUPEXUVshield FS≤25/SD≤50

24

5.6 Overhead InstallationsSuspendedsectionsofPEXpipeneedtobeinstalledusingmethodstoensurethepipedoesnotsag.StandardCopperTubeSize(CTS)hangers,includingclevisandloophangers,canbeusedtosupportsuspendedsectionsofPEXpipe.

Thehangersystemmustbestrongenoughtosupportthepipeanditscontents.AllsupportsthatcomeincontactwithRAUPEXpipemustbeapprovedmaterialsthatarecompatiblewiththepiping.

RAUPEXwillexpandandcontractwhenheatedandcooled.Itisimportanttoincorporatethiswhendesigningpathwaysandsupports.RAUPEXmaybesupportedusingeitherafixedpointorslidingsupportdevice.Fixedsupportpoints,suchaslockingclips,talondrivehooksandsinglenailclamps,willrigidlyholdRAUPEXinplaceandminimizethemovementofthepipeduringexpansionorcontraction.ThesearetypicallyinstalledonbothsidesofEVERLOC+fittinglocations.Slidingsupportdevices,liketheisolatingsuspensionclamps,willpermitthepipetoslidewithinthesupportduringexpansionandcontraction.

Whenchoosingsupports,ensuretheywillnotcut,scratchordamagethepipe.Ifusingmetalsupports,makesuretherearenosharpedgesthatcoulddamagethepipe.

RAUPEXpipe3/8to1in.diametermustbesupportedwithamaximumspacingof32in(80cm)horizontallyand10ft(3m)vertically.RAUPEXpipelargerthan1in.diametermustbesupportedwithamaximumspacingof48in(120cm)horizontallyand10ft(3m)vertically.Alwayscomplywiththeprevailinglocalcodeforsupportspacingintervals.

REHAUgalvanizedsteelsupportchannelcanbeusedtogaingreaterspacingbetweensupporthangers.ThegalvanizedsteelsupportchannelisspecificallydesignedtosupportREHAURAUPEXpipeinsizes3/4to2in.

TheprofileofthegalvanizedsupportchannelismadesotheRAUPEXpipewillsnapintothesupportchannelwithoutrequiringadditionalfasteningmethodstoholdthepipeinplace.Theresultisarigidpipematrixwithadequatestiffnesstobesupportedinoverheadandexposedapplications.Thepipematrixissupportedusingtypicalmechanicalclevishangersspacedsimilartometallicpipeinstallations.Allpiecesofgalvanizedsteelsupportchannelmusthaveaminimumoftwosupports/hangers.

-Extendsupportaminimumof1in(25mm)pasthanger-EnsureadequateRAUPEXoverhangpastsupportchanneltoallowinstallationofEVERLOC+fitting,ifrequired-Use3/8in.threadedrodtosuspendthesupportchannelwithamaximumspacingbetweensupportsof8ft(2.4m).

Note:Alwayscomplywiththeprevailinglocalcodesforsupportspacingintervals.

Fig. 5.6: REHAU galvanized steel Fig. 5.7: RAUPEX pipe in overhead installation

support channel

5.7 Water QualityRAUPEXpipeandEVERLOC+compression-sleevefittingsarethird-partytestedandcertifiedforusewheredrinkingwaterqualitiesmeettherequirementsoftheEPANational Primary Drinking Water RegulationsandtheGuidelines for Canadian Drinking Water Quality byHealthCanada.

TheU.S. Safe Drinking Water Actandthe Lead and Copper Rule requirepublicwatersupplierstoprovidenon-corrosivedrinkingwatertocustomers.However,irrespectiveofthematerialused,inrareandisolatedcases,corrosioncanoccurevenwhenthewaterqualitylevelsarewithinthepermissiblerangesetforthbytheEPANational Primary Drinking Water Standards andtheGuidelines for Canadian Drinking Water QualitybyHealthCanada.Someinfluenc-ingfactorsoncorrosionbehaviorarewaterdisinfectionprocesses,pHlevels,chloridecontent,sulfatecontentandtheuseofanin-housewatertreatmentsystem.

Toevaluatetheprobabilityofcorrosionforplumbingcomponentsinapotablewatersystem,thelicensedinstallingcontractormusthavepracticalexperiencewithinthegeographicregionofintendeduse.Consultationwiththelocalplumbingauthorityandlocalwaterauthorityregardingtheseexperiencesshouldoccurbeforetheselectionandinstallationofpotableplumbingcomponents.

Thecorrosivityofwaterdependsonamultitudeofinterdependentvariablesandtherearenosimpleequationsorindicesforpredictingthecorrosionpotential.Itmustbeunderstoodthatcorrosionisaphenomenonassociatedwiththebehaviorofsystemcomponentsintheiroperatingenvironment.Everymaterialhasauniquetendencytocorrodeornotcorrodeinasimilarenvironment.However,withlocalknowledgeofspecificwatercharacteristicsandtheenvironmentinwhichthesystemcomponentsareinstalled,thedesignengineerandinstallingcontractorcanmakepropermaterialselectionsanddeterminepropersystemoperatingparameterstominimizethepotentialforcorrosionofthepipingsystem.

25

Iflocalconditionsareknowntocausecorrosionissues,awaterqualityexpertwithcorrosionexperienceshouldbeconsulted.

InorderfortheREHAU PEXa Limited Warranty toapply,productsmustnotbesubjectedtodamageorwearcausedbyabnormaloperatingconditionsandtheproductsmustnotbeexposedtoharmfulchemicals,aggressivewaterconditionsoranyexternalinfluencesthatcausedamagetotheproducts.

5.8 Hot Water RecirculationBenefitsofhotwaterrecirculation:-Reducesthetimeyouhavetowaittodeliverhotwatertofixturesthatarefarfromthehotwaterstoragetank,whichreduceswaterwaste-HelpspreventstagnantsystemconditionsinthepipingnetworkthatcanallowforLegionellabacteriagrowth

Plumbingfixturesthatrequirehotwaterarenotalwayslocatedincloseproximitytothehotwaterstoragetank.Hotwaterrecirculationsystemscirculatehotwaterthroughoutthebuildingandbacktothestoragetanktomaintainwarmerwatertemperaturesclosertothehotwaterfixtures.Thesesystemsaimtoreducethewaittimeforhotwaterateachfixture.

InordertomeettherequirementsoftheInternationalPlumbingCodeSection607.2:-607.2, Hot or tempered water supply to fixtures.Thedevelopedlengthofhotortemperedwaterpiping,fromthesourceofhotwatertothefixturesthatrequirehotortemperedwater,shallnotexceed50ft(15m).Recirculatingsystempipingandheat-tracedpipingshallbeconsideredtobesourcesofhotortemperedwater.-607.2.1,Circulation systems and heat trace systems for maintaining

heated water temperature in distribution systems.ForGroupR2,R3andR4occupanciesthatarethreestoriesorlessinheightabovegradeplane,theinstallationofheatedwatercirculationandtemperaturemaintenancesystemsshallbeinaccordancewithSectionR403.5.1oftheInternationalEnergyConservationCode.

Aproperlycontrolledhotwaterrecirculationsystemwithwell-insulat-edpipingiskeytomeetcoderequirementsandavoidexcessenergyuse.Tominimizeenergywaste,domesticrecirculationpumpcontrolsareimportant.Energycanbesavedwithrecirculationpumpcontrols:-Simpletimercontrolsoroccupancysensorsthatonlyrecirculatehotwaterwhenthebuildingisoccupied- Temperature-basedcontrols,typicallyanaquastat,thatturnonthepumpwhenthetemperaturedropsbelowacertainthresholdcanfurtherassistintherecirculationloop.

-Pressure-changebasedcontrolsthatonlyspeedupwhenthedemandforhotwaterincreases

5.8.1 Legionella ConsiderationsAccordingtotheCenterforDiseaseControlandPrevention,Legionellaisatypeofbacteriumfoundnaturallyinfreshwaterenvironments,likelakesandstreams.Itcanbecomeahealthconcernwhenitgrowsandspreadsinhuman-madewatersystems.Thebacteriacanmultiplyinwarm,stagnantwaterandaffectshumanswhendropletsofwatercontaininghighconcentrationsofthebacterialareinhaled.Thebacteriabeginstodiewhenthewatertemperatureiselevatedabove120°F(50°C),butthedisinfectionismoreeffectiveathighertemperatures.(www.osha.gov/dts/osta/otm/legionnaires/faq.html)

Domestichotwatersystemdesignisusefultopreventthegrowthofthisbacteriawiththesetwomethods:-Minimizingdead-legdistances(thevolumeofwaterthatisbetweeneitherahotwaterstoragetankorarecirculationlineandthefixture)iscrucialtosystemdesign.Whilethe2015IPC Section 607.2mayallowforupto50ft(15m)ofpipebetweenthesetwopoints,reducingthatdistancewillreducethevolumeofwaterthatcanstagnateifthefixtureisunusedforalongperiodoftime.Stagnatewaterthatisn’tregularlythermallydisin-fectedmayallowLegionellabacteriatogrow.-Increasingthetemperatureofthewaterspeedsupthethermaldisinfec-tiontimeofLegionellabacteria.Youmustalsoavoidscaldingrisksassociatedwithmaximumdeliverablewatertemperaturesforoccupants,determinedbytheauthorityhavingjurisdiction.

Thereisn’tacomponentmanufacturerorportionofaplumbingsystemthatbearsalltheresponsibilityforLegionellagrowthprevention.ThePlasticsPipe Institute Recommendation Against Mixing Hydronic Heating Water with Potable Water, Recommendation E, 2016isagoodsourcefornon-manu-facturerspecificLegionellaconcerns.

5.9 Water HammerWaterhammer,alsocalledhydraulicshock,commonlyoccurswhenavalveclosessuddenlyattheendofapipelinesystem,andapressurewavepropagatesinthepipe,creatingvibrationandnoise.

Whilethesestatementsmaybetrueformetallicpipingsystems,theabilityofPEXpipetoabsorbshockeliminatestheneedforwaterhammerarresters,ifallowedbyprevailinglocalcodes.

26

6. INSTALLATION CONSIDERATIONS

6.1 Local Code ApprovalsTheinstallationoftheREHAUPEXaplumbingsystemforuseindomesticplumbingsystemsmustbeinaccordancewiththeguide-linesthatarepresentedinthistechnicalguide.Prevailinglocalcodeswherethesystemisbeinginstalledmustbeobserved.Wherelocalcodeandthistechnicalguideconflicteachother,localcodeshouldprevail.However,itistheresponsibilityofthedesignerandinstallertodiscussanyvariationwithREHAUEngineeringtoensureanyvariationwillnotadverselyaffecttheperformance,operationorlifeexpectancyofthesystemanditscomponents.

6.2 Packaging, Transport, Handling and Storage

6.2.1 RAUPEX Pipe PackagingRAUPEXpipecoilsareshippedincardboardboxestoprotectthemfromsunlight,rain,dirtandotherhazards.StraightlengthsofRAUPEXpipearepackagedandshippedinblackpolyethylenebags.Keeppipeintheoriginalpackaginguntilitisrequiredforinstallation.Returnunusedpipetothepackaging.

Avoidthefollowing:-Draggingpipeoverroughobjects-Contactofpipewithpetroleumproductssuchasoil,gasoline,paintthinner-Exposureofpipetosolderingoranyopenflame-Excessiveorpermanentexposuretosunlight

6.2.2 EVERLOC+ Fittings PackagingEVERLOC+fittingsandsleevesareshippedincardboardboxestoprotectthemfromsunlight,rain,dirtandotherhazards.Keeptheproductsintheoriginalpackaginguntiltheyarerequiredforinstalla-tion.Returnunusedproductstothepackagingforstorage.

Fittingsandsleevesmustbehandledwithcare.Ataminimum,avoidthefollowing:-Storingloosefittingsintoolboxes-Contactwithoiloroilyproductssuchasgasoline,paintthinner,gluesorsolvents-ExposureofpolymerfittingsandPEXasleevestosolderingoranyopenflame-ExcessiveorpermanentexposuretosunlightofpolymerfittingsandPEXasleeves

6.3 Uncoiling PipeForbestresultswheninstallingRAUPEXpipefromacoil,useaREHAUapproveduncoilingdevice.Thiswillallowthepipetolayflat(nottwisted)wheninstalled.Twistingthepipemayplacestressonthepipeafterinstallation.

RAUPEXmaybetakenfromacoilwithouttheuseofanuncoilingdevice.Whenusingthismethod,besuretorollthepipefromthecoil.Donotlaythecoilflatonitssideandpullthepipeupoverthesideofthecoilasthiswilltwistthepipe.

Fig. 6.1: Uncoiling RAUPEX pipe

6.4 Bending PipeRAUPEXpipemaybebent,withandwithouttheuseofapipebendsupport.TheminimumbendradiusforRAUPEXinastandardinstallationisfivetimestheODofthepipe.

RAUPEXmayalsobeheatedtoachieveaminimumbendradiusofthreetimestheODofthepipe.Aheatgunmaybeusedtoheatthepipe.HeatRAUPEXandbendslowly.OncetheRAUPEXisbent,removetheheatsourceandsecuretheRAUPEX.AvoidoverheatingRAUPEX(browndiscoloration)anddonotapplydirectflametoRAUPEXtoheatit(fromasolderingtorch,forexample).

Table 6.1: RAUPEX Bend Radius

Typical Minimum Bend Radius in (mm)

Pipe Size Typical 8X OD Min. Cold 5X OD Min. Heated 3X OD

3/8in 4.0(102) 2.500(64) 1.500(38)

1/2in 5.0(127) 3.125(79) 1.875(48)

5/8in 6.0(152) 3.750(95) 2.250(57)

3/4in 7.0(178) 4.375(111) 2.625(67)

1 in 9.0(229) 5.625(143) 3.375(86)

11/4in 11.0(279) 6.875(175) 4.125(105)

11/2in 13.0(330) -- --

2 in 17.0(432) -- --

27

Bend Radius90

Fig. 6.2: Bend radius of RAUPEX pipe

6.5 Distance Between Fittings AminimumdistancebetweenEVERLOC+fittingsisrequiredtoensurethefittingsarenotdamagedduringtheexpansionprocessbytheinstallationtools.Aminimumpipelengthof3timesthelengthofsleeveisrequiredbetweenfittingsforproperinstallation.

A3A

EVERLOC+ PEXaCompression Sleeve

RAUPEX Pipe

EVERLOC+ Fitting

Fig. 6.3: Required minimum distance between fittings

6.6 Pipe ProtectionPlacepipeprotectionaroundRAUPEXpipetopreventabrasionwhenpassingthroughthebuilding'sframework.

WhenRAUPEXpipepassesthroughstuds,walls,floorplates,joistsandotherstructuralmembers,caremustbetakennottodamagethepipe.

Protectionisnotrequiredforinstallationinwoodstuds,walls,floorplatesorjoistsifthefollowingprovisionsaremet:-Theholeisatleast1/4in(6mm)largerthantheoutsidediameter(OD)ofthepipe-Thepipeisfreetomoveduringexpansionandcontraction-Theholeisclean(e.g.,freeofsplinters,burrsandroughedges)-Theholeissupportingonlytheweightofthepipe(withfluid),andnotamechanicaldevice

-Theholehassmooth,non-abrasiveinteriorsurface(e.g.,bushing)-Prevailinglocalcodesallowsuchpractice

UseofPEprotectionsleeveorotherapprovedsupportdeviceisrequiredforRAUPEXpipewhenpassingthroughholesinsteel,concreteormasonrywalls,joistsandotherstructuralmembers.

WhenRAUPEXpiperunsthroughanyabrasivematerial,oraholethatdoesnotallowfreemovement,itmustbeprotectedbyPEprotectionsleeveoranotherapprovedinstallationaccessory,suchassuspensionclampsorisolators.

Fig. 6.4: Isolation suspension clamps Fig. 6.5: Pipe isolator

Fig. 6.6: PE protection sleeve

RAUPEXpipeisrecommendedforinstallationdirectlywithinorbelowaconcreteslab.TheuseofPEprotectionsleeveorPVCbendguidesatslabpenetrationsisrecommended.

Fig. 6.7: Slab penetration

28

6.7 InsulationThermalconductivityofRAUPEXpipeismuchlowerthanthatofmetallicpipes.Insulationcanbeinstalledtofurtherenhancethisproperty,todecreaseenergyusage,andmaintainwatertemperatureinsidethepipe.BecauseofthethermalpropertiesofRAUPEXpipe,itisalsolesssusceptibletocondensationorsweatingoncoldwaterlines.

Insulationcanbeinstalledoncoldwaterlinestoimproveresistancetocondensationorbettermaintaininternalwatertemperature.Alwayscomplywithprevailinglocalcodes.

6.8 Installation Below-grade, in-slabRAUPEXmaybeinstalleddirectlywithinorbelowaconcreteslab.Thisisespeciallyusefulinslab-on-gradeconstruction.RAUPEXpipesencasedwithinconcreteslabsarenotrequiredtobesleeved.

ToprotectRAUPEXpipefromabrasionwhereitpassesthroughtheconcrete,theuseofPEprotectionsleevesorPVCbendguidesatallslabpenetrationsisrecommended.

ContinuoussleevingofRAUPEXplumbingpipesburiedbeloworwithinaconcreteslabisnotprohibited,however,insuchcasesthefollowingprecautionmustbefollowed:-WhenRAUPEXpipesarecontinuouslysleevedbeloworaboveaslab,thespacebetweenthepipeandthesleevingmustneverbefilledwithanyliquidchemical,includingpesticidesortermiticides.-Theannulargapbetweenthepipesattheendsshouldbefilledwithsiliconeorpolyurethaneexpandingfoamtohelppreventpathwaysforpestsandthemistakenapplicationofharmfulchemicalsintothespacebetweenthepipeandthesleeving.-UseonlysealantsthatarecompatiblewithRAUPEXpipe.

WARNING-ApplicationofpesticidesortermiticidesbetweenRAUPEXpipeandsleevingisstrictlyprohibited.Permeationofpesticidesortermiticidesmayoccurthroughthepipewallresultinginseriousinjuryordeath.-RAUPEXpipesforplumbingapplicationsshallnotbeinstalledincontaminatedsoilsorimmersedinliquidchemicals.Donotdirectlysprayonoralloworganic(petroleum-based)chemicalssuchas,petroleumdistillates,termiticidesorpesticidestocomeintocontactwithRAUPEXpipes.Permeationoftheseharmfulchemicalsmayoccurthroughthepipewallresultinginseriousinjuryordeath.

Fig. 6.8: Continuous sleeve installation

Fig 6.9: Slab penetration protection

ApressuretestonRAUPEXpipesbeforeencasinginconcreteisrecommendedtoensureRAUPEXpipeandconnectionsareleakfree.Installersshouldmaintaintestpressureonthesystemduringfurtherconstruction,wherepractical.Airtestingispermitted.Ifawater(hydrostatic)testisused,thewatermustbeprotectedfromfreezing.DetailedpressuretestingprocedureisoutlinedinSection6.17.2.

6.9 Fixture Connection Common Components

6.9.1 Drop Ear ElbowsTheEVERLOC+LFbrassdropearelbowprovidesarigid90°bendandtheabilitytosecure1/2or3⁄4in.RAUPEXpipewhereitexitsastudwallorconnectstoashowerhead. Fig. 6.10: Drop ear elbow

6.9.2 Copper Ells TheEVERLOC+tub/showerdiverterellprovidesa90°transitionfromtubandshowervalvetoRAUPEXpipe.

TheEVERLOC+closed-endstuboutellprovidesa90°transitionfromRAUPEXpipetocopper.Useclosed-endstuboutellsatthefixturetoexitfromthewall.

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TheEVERLOC+straightcopperstubsprovideatransitionfromRAUPEXpipetocopper.Useclosed-endstuboutellsatthefixturetoexitfromthewall.

Fig. 6.11: EVERLOC+ copper ells

6.9.3 EVERLOC+ ValvesEVERLOC+straightandanglestopvalvesareintendedforusewithpoint-of-usefixtures.

BecauseRAUPEXpipehasthesameoutsidediameterasstandardcopperpipe,youcanusestandardcompressionstraightandanglestopvalveswithstiffenerstoconnecttoRAUPEXpipe.

Fig. 6.12: EVERLOC+ Valves

6.9.4 Other EVERLOC+ Transition FittingsREHAUalsooffersfollowingconnectiontypesfortheEVERLOC+fittingswhenmakingconnectionstofixtures.RefertotheREHAU Sustainable Building Technology Catalogforacompletearticlelisting.

-EVERLOC+90°Elbows,PEXtoCopper(CMaleandCFemale)-EVERLOC+Adapters,PEXtoCopper(CMaleandCFemale)-EVERLOC+MPTAdapters,PEXtoMPT-EVERLOC+FPTAdapters,PEXtoFPT-EVERLOC+LFBrassSwivelAdapters,PEXtoNPS

6.10 Water Heater Connections In accordance to Uniform Plumbing Code, Section 604.13:PEXtubingshallnotbeinstalledwithinthefirsteighteen(18)inches(457mm)ofpipingconnectedtoawaterheater.Aminimumof18in(45cm)ofmetallictransitionpipingmustbeusedforbothofthedirectconnec-tionstowaterheaterconnections.Corrugatedmetalwaterheaterconnectorpipesofcopperorstainlesssteelarethetypicalmaterialsforthisapplication.ThisappliestoallPEXfittingsystemsandalltypesofwaterheaters(electric,fossilfuel,andindirect-fired)includingstoragetanktypeandtanklesstype(alsoknownasdemandorinstantaneous)waterheaters.

However,therearejurisdictionsthatpermitdirectconnectionofPEXtoanelectricwaterheater.Inthesecases,RAUPEXpipeandEVERLOC+fittingsmaybedirectlyconnected.

Inaddition,whenconnectingRAUPEXpipetoatanklesstypeorpoint-of-usewaterheater,connectionsshallfollowwaterheatermanufacturer’sinstallationinstructions.

Fig. 6.13: Water heater connection

6.11 Supporting RAUPEX PipeRAUPEXpipeshouldbeinstalledsothatitisalignedandstable.-StandardCopperTubeSize(CTS)hangers,includingclevisandloophangers,canbeusedtosupportsuspendedsectionsofpipe.-Suspendedsectionsofpipeshallbeinstalledsothatthereisnosaginthepipesystem.-AllmaterialsincontactwiththepipeshallbeapprovedforusewithRAUPEXpipe.-Ensuresupportswillnotcut,scratchordamagethepipe.

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-Suspendedinstallationsinwood-frameconstructioncanutilizestrutchannelhangingwithall-threadasthesupportdevicewiththeappropriateclampstosecurepipetothestrut.Whenclampingpipe,besurenottodeformthepipewiththeforceoftheclamp.-Installationsinsteel-frameconstructioncanbedonesimilarly,butcanalsousebeamclampstosecuretheall-threadtosteelI-Beams.-Steeljoistspacecanbeusedasthesupportmethod.

Whennotinstallinginsuspension,othersupportmechanismsforRAUPEXpipecanbeused.Theseincludesinglenailhooks,pipesupportbends,talondrivehooksandlockingclips.Thesecanalsobeusedforsmallerbranchrunsofpipeaswellastoassistinmakingbendstoconnecttofixtures.

RAUPEXpipe3/8to1in.diametermustbesupportedwithamaximumspacingof32in(80cm)horizontallyand10ft(3m)vertically.RAUPEXpipelargerthan1in.diametermustbesupportedwithamaximumspacingof48in(120cm)horizontallyand10ft(3m)vertically.Alwayscomplywiththeprevailinglocalcodeforsupportspacingintervals.

Fig. 6.14: Single nail hooks Fig. 6.15: Pipe support bend

Fig. 6.16: Talon drive hooks Fig 6.17: Locking clip

6.11.1 Galvanized Steel Support ChannelREHAUgalvanizedsteelsupportchannelisdesignedtosupportRAUPEXpipe,minimizespipeexpansionandreducestheamountofCTSsupports.TheprofileofthegalvanizedsupportchannelisdesignedsotheRAUPEXpipewillsnapinwithoutrequiringadditionalfasteningmethodstoholdthepipeinplace.

Thesupportchannelcanbecuttomeetinstallationrequirementsusingpowertoolssuchasabandsaworhandtools.Whencutting,besurenottobendoraltertheoverallprofileofthechannel.Aftercuttingthechannel,besuretoremoveanysharpedgesorburrstopreventdamagetotheRAUPEXpipe.

Typicalmechanicalclevishangerscanbeusedforsupport,andtheslimprofileofthechannelallowsstandardCTSinsulationtobeinstalledaroundit.InstallingRAUPEXpipeintothesupportchannelbeforesuspendingtheassemblyisrecommended.Iffittingswillneedtobeinstalledin-linewiththerunofpipeinthesupportchannel,besuretohavetheRAUPEXpipeoverhangtheendofthesupportchannelatleasttwoEVERLOC+sleevelengths.Additionally,thegalvanizedsteelsupportchannelshallextendaminimumof1in.(2.5cm)pastthehanger.

Use3/8in.threadedrodtosuspendthesupportchannelwithamaximumspacingbetweensupportsof8ft(2.4m).Alwayscomplywithprevailinglocalcodesforsupportspacingintervals.

Fig. 6.18: RAUPEX pipe supported with steel support channel

6.12 Supporting EVERLOC+ FittingsSupportsandclampsshallnotbeplaceddirectlyontheEVERLOC+fitting,multi-portteeorcompressionsleeve.Alwayscomplywithprevailinglocalcodes.

6.13 Copper SolderingPropersolderingtechniquesmustbefollowedwhensolderingallcompression-sleevefittingsaccordingtotheCopperDevelopmentAssociation(CDA)Handbook:-Thesurfaceofthefittingsolderingareamustbeproperlycleanedforagoodsolderconnection.Applyingfluxisnotconsideredsufficientcleaningforthesolderingarea.Usingapropersandingorbrushtechniqueisnecessarytoremovethesurfaceoxides.Inordertopreventfurtherformationofoxides,thefluxshouldbeappliedimmediatelyafterthecleaningprocess.Aproperfluxthatiscompatiblewiththebrassalloymustbeused.

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-Caremustbetakentonotoverheatthesolderingsurfaceasthiscanleadtotheformationofoxidespreventinggoodadhesionofthesoldermaterial.Itisimperativethatthefittingisheatedevenlyaroundtheentiresurfacesoastonotoverheatoneparticulararea.-Allcompletedsolderjointsmustbetestedforjointintegrityfollowingtheproceduresprescribedbyprevailinglocalcodes.

WhensolderinganEVERLOC+LFbrassfitting:-Thefittingmustbesolderedontothecopperfirst.-Thesolderjointmustbeallowedtocooltoambientroomtempera-turepriortomakinganEVERLOC+connection.

Fig. 6.19: Solder prior to making EVERLOC+ connection

Fig. 6.20: Never solder after EVERLOC+ connection has been made

WARNING - Useglovesandaholdingtool.Heatedpipeandfittingscancauseburns. - Neveruseatorch,openflameorheatgunonapressurizedsystem.Exceedingthetemperaturepressureratingswillresultindangerousseparationofmaterialsleadingtoseriousinjuryordeath. - Neverreworkaconnectionthatisunderpressure.Depressurizethesystem,cutoutconnectionandreplace

6.14 Kink RepairRAUPEXpipeisflexibleandresistskinkingevenattemperatureswellbelowfreezing.Ifthepipedoesbecomekinked,flowmaybeobstructedorreduced.Kinkedpipemustberepaired.

Straightenthepipebyheatingtheareawithaheatgun,rotatingtheheatgunaroundthepipetoevenlyheatthesurface.Alwaysusecautionwhenoperatingaheatgunandneveruseatorchoropenflametoheatthepipe.

Whenfullyheated,thepipewillbecometransparent.Whenthekinkisgone,turnofftheheatgunandlettheareacool.(Itisnormalforsmallbubblesorwrinklestoappear.)Thistypeofheatingwillannealorstiffenthepipe,makingitstrongerbutalsolessflexibleintheheatedarea.Therefore,donottrytobendthepipeinthesamespot.Thismayrequireaslightadjustmentoffasteners.

6.15 Thawing Frozen PipeWhenconditionsoccurthatallowwatertofreezeinsidethepipe,theflexibilityofRAUPEXallowsthepipetoexpandaswaterfreezes,aslongasthepipehasroomtoexpand.

Whenthewaterthaws,thepipereturnstoitsoriginalshape.Ifthepipeisnotallowedtoexpand(e.g.,itisencasedinconcrete),itmayburst.Iffreezingdoesoccur,thefollowingmethodscanbeusedtothawthefrozensection:-Heatthefrozenareawithaheatgun.Besurenottoconcentrateexcessiveheatinasingleareafortoolong-Wraptowelsaroundthepipingandpourhotwateronthetowels-Useaspaceheatertowarmtheroomuntilthefrozensectionthaws

WhiletheflexibilityoftheRAUPEXpipeallowsittoexpandaswaterfreezesinthepipe,thisflexibilitydoesnotensuretheintegrityofthejoint.Installersmusttakeprecautionstoensurethatpipesandfittingsdonotfreeze.Thismayresultinleaksandoperationalfailures.

6.16 DisinfectionDisinfectionofthesystemshouldalwaysfollowprevailinglocalcodesandrequirements.Ifrequiredbycodeandnoconditionsarespecified,disinfectusingchlorinationaccordingtoAWWAorICCproceduresoutlinedbelow:

Table 6.2: AWWA/ICC Disinfection Schedule

Chlorine Concentration Disinfection Period Authority

50to100ppm 3hours AWWA

50ppm 6hours ICC

Pre-mixsolutionbeforeinjectingintosystem.Donotallowdisinfectionsolutiontositinsystembeyondthedisinfectionperiod.Thoroughlyflushentiresystemwithpotablewaterafterdisinfection.

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6.17 Pressure TestingREHAUhasadetailedpressuretestprocedurefortestingaREHAUPEXapipingsystemassetforthbelow.

WARNING - Failuretofollowpropersafetyprecautionsforanairpressuretestcouldresultindangerousseparationofthematerial,leadingtoseriousinjuryordeath. - Usepersonalprotectiveequipment.Toreducetheriskofeyeinjury,alwayswearclose-fittingprotectiveeyewearwithsideprotection.Eyewearmustbeimpact-ratedandmarkedascomplyingwithANSIZ87.1. - Neveruseatorch,openflameorheatgunonapressurizedsystem.Exceedingthetemperaturepressureratingswillresultindangerousseparationofmaterialsleadingtoseriousinjuryordeath. - Neverreworkaconnectionthatisunderpressure.Depressurizethesystem,cutoutconnectionandreplace. - Toreducetheriskofpersonalinjury,onlyqualifiedpersonsconductingand/orinspectingthepressuretestshouldbepresent.

Thefollowingrecommendedpressuretestprocedureappliestobothcompressedairandhydrostatic(water)testing:

6.17.1 General Recommendations - Apressuretestmustalwaysbeperformedpriortoclosinginthesystem(e.g.,behinddrywall). - Performtestusingwaterorairatambienttemperature.Donotexceed150psi(1030kPa)forthepipingsystem.Verifymaximumpressurelimitsarenotexceededforallsystemcomponentspriortoperformingthepressuretest. - WhenairpressuretestingwithEVERLOC+polymerfittingsdonotexceed120psi(825kPa).

- ForRFHandSIMsystems,apressuretestmustalwaysbeper-formedonthesystempriortoandduringtheinstallationofthethermalmasstoensurethatRAUPEXpipeandconnectionsareleakfree.Fordrysystems(e.g.,joistspace),apressuretestmustbeperformedafterinstallationanduptothetimethatthesystemisputin operation. - Testsshallcomplywithlocalcodeswhereapplicableand,whererequired,shallbewitnessedbythebuildingofficial.

6.17.2 Pressure Testing with AirAircanstoreahighamountofenergyascomparedtowaterduringapressuretest.Duetothishigherenergy,differentfailuremodesofsystemmaterialsmustbeunderstoodbypersonsconductingthepressure test. - Ifathermosetpolymer(e.g.,PEXapipe)isover-pressurizedandfails(bursts),itdoessoinaductilemode,meaningthatthepipewillswellandthensplitwithnoseparationoffragments. - Ifarigidthermoplasticpolymermaterial(e.g.,PPSU)is

over-pressurizedandfails(bursts),itdoessoinabrittlemodeandcanresultinseparationofthematerial.

6.17.3 REHAU Pressure Test Procedure-Useanairtestifconditionsdonotpermitawatertest(e.g.,freezingconditions,insufficientwatersupply/pressure).-Airtemperaturewillaffectthegaugepressure.Performallpressuretestsataconstanttemperature.Verifymaximumpressurerequire-mentsforothersystemspriortoperformingthetest.-Conductavisualinspectionofthepipingsystem,toensureallconnectionshavebeenproperlymadeandallpipinghasbeenproperly secured prior to pressurization.-Performapreliminarypressuretestpressurizingthesystemto1.5timesthemaximumoperatingpressurenottoexceedthemaximumpressuresdefinedabovefor30minutes.-Asthepipingexpands,restorepressure,firstat10minutesintothetestandagainat20minutes.-Attheendofthe30-minutepreliminarytest,pressuremustnotfallbymorethan5psifromthemaximum,andthereshallbenoleakage.-Afterperformingthepreliminarytest,performthemainpressuretestimmediately.Themainpressuretestshalllastatleast2hours.Thetestpressureshouldberestoredandmustnotfallmorethan3psiafter2hours.Noleakageshouldbedetected.-Itisrecommendedtomaintainpressureonthesystemduringfurtherconstruction,wherepractical,toimmediatelyidentifyanydamage.Ifawater(hydrostatic)testisused,protectthewaterfromfreezingordrainwaterfrompipes.-Ifanyrepairsorcorrectionsarenecessary,depressurizethesystembeforeproceeding.

NOTICE - Whenotherthermoplasticpipingmaterials(e.g.,CPVC,PP-R)arepresentinthepipingsystem,thesesectionsofpipingmustbeisolatedfromtheREHAUPEXapipingsystemduringthepressuretest.Theinstallermustconsulttheothercomponentmanufacturer’sinstallationinstructionsforpressuretestingthosesectionsofthesystem. - AlwaysrefertothelocalcodesforpressuretestingrequirementsanduseairtestingonlyifapprovedbythelocalAuthorityHavingJurisdiction(AHJ). - REHAUonlyprovidesthegeneralguidelinesforperformingapressuretest,whichbynomeanssupersedeorareintendedtocontradictsafetyrequirements.Itistheresponsibilityoftheinstallingcontractortoensureaproperandsafepressuretestisperformedonsite. - Allothertradesmustbenotifiedthatthepressuretestwillbeconductedonthepipingsystem.

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Forupdatestothispublication,visitna.rehau.com/resourcecenterTheinformationcontainedhereinisbelievedtobereliable,butnorepresentations,guaranteesorwarrantiesofanykindaremadeastoitsaccuracy,suitabilityforparticularapplicationsortheresultstobeobtainedtherefrom.Beforeusing,theuserwilldeterminesuitabilityoftheinformationforuser’sintendeduseandshallassumeallriskandliabilityinconnectiontherewith.©2019REHAU 855.739US,CA/en09.2019

PEXa PLUMBING DESIGN AND INSTALLATION GUIDE · Plumbing Code, governed by the International...

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