A Packaged Water Heater Ready For Installation

MODEL ST

ASME

U

Features■ Reliable� Onlyhighgradematerialsusedin

constructiontoensurelongoperatinglife

� Hydrastonecementliningprovidessuperiorprotectionandtanklongevity

� Heavydutyconstructionwithstandsdemandingcommercial/industrialuse

■ Packaged System� Factorysuppliedwithallsteamcontrols

savingtimeandmoneyduringinstallation� Allsteamoperatingcontrolsarefactory

sizedandselectedtoensurereliableoperation

■ Versatile� Fullrangeofstyles,sizes,andoptional

featurestomeetyourexactheatingneeds

Applications■ Schools■ OfficeBuildings■ Prisons■ Stadiums■ Hotels■ IndustrialFacilities

■ NursingHomes■ Hospitals

The Model ST is a fully packaged steam fired storage water heater

Model STH Storage Tank Type

A Heavy Duty Steam Fired Storage Water HeaterTheModelSTisafullypackagedsteamfiredwaterheater

designedtobeareliableandlonglastingsourceforhotwater.Eachcomponentiscarefullyselectedtoensureperformanceineventhemostdemandingapplication.Whetheryouareheatingpotablewaterinacommercialbuildingorprocesswaterinan

industrialapplication,youcanselectaHubbellModelSTtodothejob.WhenyouspecifyandinstallaHubbellSTmodelwaterheateryouwillhaveconfidenceinknowingthattheownerwillbeprovidedwithaqualityproductthatisalonglastingandtrouble-freesourceforhotwater.

Packaged Steam Fired Water HeaterUtilizes Steam To Heat Domestic Water, Semi-Instantaneous or Storage Type Heaters

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Cement Lined Tanks ProvideLonger Service Life

Unlined TaNks

1. 90/10Copper-NickelA90%Copper10%Nickelalloypressurevesselprovidesstrengthandcorrosionresistance.Typicallyusedinapplicationswithcorrosiveenvironments(saltwater)orincriticalcommercialandindustrialapplicationsrequiringlongtanklife.

2. AlternativeCementFormulationsTomeetthespecificrequirementsofDIWater,ROWater,extendedserviceandorhightemperatureapplications,alternativeformulationsofcementareavailable.Pleaseconsultfactoryforassistance.

3. PhenolicLiningAnepoxycoatingappliedin2coatstoatotalof10-12milsDFT.TypicallyusedinprocessapplicationsusinglowconductivityDIdistilledorfoodgradewater.

4. GalvanizingThesteelpressurevesselispickledandhotdippedinmoltenzinctocreateabarrierwhichinternallyandexternallyprotectsasteelvesselforcoldandhotwaterstorage.

An Unlinedtankdoesnotrequirealiningbecausethepressurevesselitself isconstructedfrommaterialwhichisimpervioustothecorrosiveeffectsofhotwater.Thistypeoftankwillprovideasignificantlylongerservicelifethanalllinedsteeltanks,butisinitiallymorecostly.

2. StainlessSteelStainlesssteel(Specify:Type304,316,or316L)iswellsuitedforindustrialandhighpurityapplicationsrequiringacorrosionresistanttankwithminimalleachingofimpuritiesintothewater.Wellsuitedforprocess,RO,andDIwatersystemsinthepharmaceutical,foodandelectronicindustries.

Linings Available For A Steel Tank

AspeciallyformulatedHydrastonecementappliedtoaminimumof5⁄8"thicknessonallsurfaces.Thecementliningcovers100%ofallinteriorsurfacesandis125timesthickerthanglasslining.Duetothethicknessandguaranteedcoverageofcementliningthereisnoneedforasacrificialanode.Anextremelydurableandlonglastingliningsuitableforhotandcoldpotablewaterstorageinavarietyofcommercialandindustrialapplications.

1. CementLining

Q ?Failureofatank'sprotectiveliningallowswatertocomeintodirectcontactwiththesteeltankcausingittocorrodeandleak.

Therefore,thetypeofprotectiveliningisthesinglemostimportantfeaturewhendeterminingthequalityofanywaterheater.Theabilityofaliningtoprotectthesteeltankisprimarilybaseduponitsthicknessandcompletecoverageofallsteelsurfaces.

Whatisthemostcommonreasonwhyawaterheaterfails?

A !

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Model ST Storage Type Standard Equipment

Model ST Optional Equipment

Vessel Construction1. Allweldedcarbonsteelvesseldesignedand

builtinstrictaccordancewiththeASMECodeSectionVIIIandstamped,certifiedandregisteredwiththeNationalBoardofBoilerandPressureVesselInspectors

2. Allinternaltanksurfacesarelinedwithaminimumof5⁄8"thickHydrastonecementforsuperiorprotectionandtanklongevity

3. Designedfor125psiworkingpressureandhydrostaticallytested

Steam Heating Coil1. Ahighqualityfactoryinstalled2passU-Tube

heatingcoilconstructedfrom18gauge¾"O.D.singlewallcoppertubingdesignedforamaximumworkingpressureof150psi

2. Allwettedpartsarenon-ferrousformaximumlongevity

3. HeavydutyfabricatedsteelheadwiththreadedNPTsteamandcondensateconnections

4. Copperlinedtubesheet5. PleaseReferenceHUBBELLbrochure“Heating

Coils”fordetailedheatingcoilconstructionfeaturesSteam Operating Controls

1. Steamoperatingcontrolsarefactoryselected,sized,pipedandtestedtoensurereliableoperation

2. Allsteamcomponentsarefactoryplumbedwithschedule40blackironpipeandreadyforsteamandcondensateconnections

3. Highqualitycastironpilotoperatedsteamcontrolvalvemodulatestheflowofsteamthroughtheheatingcoiltoprovideaccuratewatertemperaturecontrol

4. CastironYstrainerwith20Meshscreenprotectsthesteamcontrolsandcoilfromdirtanddebrisinthesteamsupply

5. Thermostaticdriptrapremovescondensatefromthesteamsupplyline

6. Heavydutycastironfloatandthermostaticmaincondensatetrapforoptimumefficiency

7. Brassvacuumbreakeranddialsteampressuregauge

General1. Heavyduty3"thickfiberglassinsulation

covers100%ofthepressurevesselformaximumoperatingefficiencyandminimalstand-byheatloss

2. Heavygaugepaintedgalvanizedsteelprotectiveouterjacket

3. Heavydutyintegrallyweldedsteelsupportsforfloormounting

4. Fullfive(5)yearNonPro-Ratedtankwarrantyandaone(1)yearsteamcomponentwarranty

5. ASMEratedcombinationT&Preliefvalvesetatthetankworkingpressureand210oF

NOTE:Otheroptionalfeaturesareavailable,pleaseconsultfactoryifrequired.

Steam Heating Coil4. Doublewalltubingwithaleakdetectionport5. Alternatetubingmaterialpleasespecify:

(StainlessSteel,90/10Copper-Nickel,Admiralty,Other)

6. Fabricatedsteamheadconstructedfrom:(StainlessSteel,CopperAlloy,Other)

General7. SkidmountingonheavydutyallweldedIBeam8. Type304stainlesssteelprotectivejacket,please

specifyifpainted9. Manway12"x16"orInspectionOpening3"NPT

Vessel1. Alternateprotectivelining:

Phenolicepoxyresin,Flamespraycopper,Hotdipgalvanizing,other

2. Alternatevesselconstruction:StainlessSteelType304or316L,90/10Copper-Nickel,other

3. Alternateworkingpressure:Pleasespecify

Operating Controls10. Steamcontrolscanbefactoryselectedandsized,

butshippedlooseforinthefieldinstallationbyothers

11. Varioussteamcontrolvalvesareavailabletomeetthespecificneedsofyourapplication,pleasespecify:Self-operatedtype,pneumaticoperated,electronicoperated,separatepressurereducingpilottype

12. Singlesolenoidsafetysystemclosesthesteamsupplytothecontrolvalveshouldthewatertemperatureinthetankreachthehi-limitsetpoint.Requires120volt5ampelectricalservice

13. Adoublesolenoidsafetysystemdumpsoverheatedwaterinthestoragetanktodraininadditiontoclosingthesteamsupplytothecontrolvalve.Requires120volt5ampelectricalservice

14. Intra-tankcirculationpumppackagecontinuouslycirculateswaterwithinthetankinordertoreducestratification.AllbronzefractionalHPpump

15. Anticipatorcontrolsystemforcesincomingcoldwateroverthecontrolvalvesensingbulbinordertobeginheatingwaterimmediately

16. Dialwaterthermometerandpressuregaugefactoryinstalledinthetank

17. Factorywrappedandbaffledsteamcoilwithintegralpumppackage

Please note: optional equipment may impact overall dimensions and weight. Please request submittal drawing from factory.

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Note:Alldimensionsareapproximateandsubjecttochange.Pleasereferencethesubmittaldrawingforactualdimensions.Thetankselectionsaboveareshownforconvenience.Afullselectionofstoragecapacitiesisavailablebyenteringthedesiredcapacityintothemodelnumber.* 80,120and150gallontanksdonotcomeequippedwithamanway.Pleaseconsultfactoryifdesiredonthesesizes.

Overall Dimensions, Models ST and STH

ActualStorageCapacity(Gallons)

OverallDimensions(Inches) StorageTank

NominalStorageCapacity(Gallons)

InletOutletSizing(NPT)

Approx.ShippingWeight(Lbs.)

Vertical HorizontalDiameter

“A”Height“B”

Length“C”

Width“D”

Height“E”

DiameterxLength

80* 26 65 60 26 32 22 x 54 90 1.5 700

120* 28 75 68 28 34 24 x 64 140 1.5 900

150* 30 79 72 30 36 26 x 68 170 1.5 1100

175 36 73 67 36 44 30 x 63 195 1.5 1500

200 36 82 76 36 44 30 x 72 220 1.5 1700

225 36 89 83 36 44 30 x 79 245 1.5 1750

250 42 74 68 42 50 36 x 64 285 1.5 1850

275 42 80 74 42 50 36 x 70 310 1.5 2000

300 42 88 82 42 50 36 x 78 345 1.5 2180

325 42 92 86 42 50 36 x 82 360 1.5 2300

350 42 94 88 42 50 36 x 84 370 1.5 2500

375 48 81 75 48 56 42 x 71 425 1.5 2600

400 48 85 79 48 56 42 x 75 450 1.5 2700

425 48 88 82 48 56 42 x 78 470 1.5 2900

450 48 93 87 48 56 42 x 83 500 1.5 3000

475 54 79 73 54 62 48 x 69 540 2 3100

500 54 82 76 54 62 48 x 72 565 2 3225

525 54 85 79 54 62 48 x 75 590 2 3350

550 54 89 83 54 62 48 x 79 620 2 3400

575 54 93 87 54 62 48 x 83 650 2 3500

600 54 95 89 54 62 48 x 85 665 2 3650

700 54 107 101 54 62 48 x 97 755 2 4000

800 54 119 113 54 62 48 x 109 850 2 4300

900 54 132 126 54 62 48 x 122 940 2 4800

1000 54 145 139 54 62 48 x 135 1060 2 5200

1250 60 149 143 60 68 54 x 139 1380 2 5600

1500 60 174 168 60 68 54 x 164 1625 2 6000

1750 66 168 162 66 74 60 x 158 1935 3 7400

2000 66 185 179 66 74 60 x 175 2145 3 8100

2500 78 169 163 78 86 72 x 159 2800 3 8200

3000 78 197 191 78 86 72 x 187 3300 3 8300

3500 90 174 168 90 98 84 x 164 3935 6FLG. 8900

4000 90 195 189 90 98 84 x 185 4440 6FLG. 9800

4500 N/A N/A 168 102 108 96 x 160 5015 6FLG. 10700

5000 N/A N/A 183 102 108 96 x 175 5485 6FLG. 11600

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Model ST (Vertical)

SideView

FrontView

WithdrawalSpace

HotWaterOutlet

LiftingLug

T&PReliefValve

C

E

D

HeatingCoil

28"

ColdWaterInlet

PressureVessel

Insulation

ProtectiveJacket

Drain

Manway

SideView FrontView

A

ProtectiveJacket

PressureVessel

12"x16"Manway

WithdrawalSpace

HeatingCoil

28"

CombinationColdWaterInletandDrain

6"

B

HotWaterOutlet

T&PReliefValve 4"

Insulation

Outline Dimensions

Convection Model Shown

Model STH (Horizontal)Convection Model Shown

LiftingLug

Supports

SkidBase(optional)

Standard:SaddleOptional:Skids

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Steam Component General ConfigurationThesteamcontrolvalvemaintainsaccuratewatertemperatureinasteamfiredwaterheaterbyregulatingtheflowofsteamthroughtheheatingcoil.

There are four types of steam control valves available for use on a steam fired storage water heater.

Self Operating

Thevalvedesignincludesabulbandcapillaryassemblychargedwithathermallyresponsivevapor.Theexpansion/contractionofthevaporactsuponthevalvebellowsinordertocontroltheflowofsteamthroughthevalve.Noexternalpowersourceisrequiredforoperation.

Pneumatically Operated

Inthisconfigurationthebuildingairsupplyfeedsafactoryinstalledtemperaturecontrollerwhichoperatesthesteamcontrolvalve.Thetemperaturecontrollersendsapreciseairsignaltothesteamcontrolvalvewhichadjuststheflowofsteamintotheheatingcoil.Thetemperaturecontrollerisfullyadjustablefrom50-250oFandrequires20psiairatamaximumconsumptionof0.5SCFM.

Pilot OperatedApilotoperatedcontrolvalveisthemostwidelyusedtypeofvalveforstandardwaterheatingapplications.Inthistypeofvalve,atemperaturepilotdeviceutilizessteamtooperatethemainvalve.Noexternalpowersourceisrequiredotherthansteam.Thisisahighlydependabletemperaturecontrolsystemwhichissuitableformostcommercialandindustrialapplications.Asanoption,thisvalvemayincludeapressurereducingpilotwhichlimitsthesteampressuretoapredeterminedmaximum.

Electronic OperatedThiscontrolvalveissimilartoapneumaticallyoperatedsystem,exceptinthiscasethetemperaturecontrollerisaPIDdigitaldisplayelectronictemperaturecontrollerwhichoutputsa4-20mAsignaltoacompactmotormountedonthesteamcontrolvalveinordertoproportionallycontroltheflowofsteamtotheheatingcoil.ThetemperaturecontrollerdisplayssetpointaswellasactualwatertemperatureandisavailablewithanRS485communicationsportforremotecontrol.

F&TMainCondensateTrap

AdjustableTemperaturePilot

SteamInlet

YStrainer

CondensateOutlet

SteamControlValve

ThermostaticDripTrap

Tosensingbulbintank

Pneumaticorelectroniccontroller(ifrequired)

SteamPressureGauge

VacuumBreaker

SteamCoil

YStrainer

Models ST and STH Number Designation

opTioN NoTe

Anyandalloptionalequipmentforawaterheatermustbecalledoutinthewrittenspecifications.Amodelnumberinandofitselfdoesnotreflectanyoptionalequipmentselected.

Example: ST600SL - 1250A vertically installed 600 gallon steam fired water heater with a cement lined steel storage tank rated to heat 1250 GPH at a 100oF temperature rise.

■Step2

StorageCapacity:80-5000Gallons

■Step1

Model:ST= Vertical STH = Horizontal

■Step4

RecoveryRating:InGPHat100oF∆T

—

■Step5

CoilType:S=SingleWallD=DoubleWall

■ Step 3Vessel Type:SL = Cement Lined SteelGL = Phenolic Lined SteelM = Galvanized SteelCN = Solid 90/10 Copper Nickel SS = Solid Stainless Steel(specify Type 304 or 316L)

JOBNAME

REPRESENTATIVE

ENGINEER

CONTRACTOR

Master Specification: Model ST

GENERALProvideaquantityof packagedtypesteamfiredstoragewaterheater(s)ModelNo.asmanufacturedbyHUBBELLElectricHeaterCo.,Stratford,CT.Thepressurevesselshallbemountedonstructuralsupportsandbesuitablyinsulated,jacketed,paintedandprovidedwithliftinglugs.Theentireunitistobepackagedreadyforserviceconnections.

PRESSURE VESSELThepressurevesselshallbeallweldedconstructionandASMECodeSectionVIIIstampedforaworkingpressureof125psi( OptionalSpecification: psi)andcontainaminimumof gallonsofstorage.ThestoragevesselshallbecarbonsteelandlinedwithseamlessHydrastonecementtoaminimumthicknessof5⁄8"on100%ofallinteriortanksurfaces( OptionalSpecifications:Phenoliclinedsteeltank,galvanizedsteeltank,solidType304or316Lstainlesssteeltank,solid90/10Copper-nickeltank).Thepressurevesselistobeinsulatedwith3"thickenergyconservationfiberglassblanketinsulationandenclosedinaheavygaugegalvanizedsteelmetaljacketfinishedingrayhammertoneenamel.ThevesselshallbeprotectedbyanASMEapprovedautomaticreseatingcombinationtemperatureandpressurereliefvalvesetatthetankworkingpressureand210oF.

HEATING SECTIONThe heatingcoilshallberatedtoheat GPHfrom oFto oFwhensuppliedwith PSIofsteamtothecontrolvalveandconsume lbs/hoursteam.Thesinglewall( OptionalSpecification:doublewall)heatingcoilshallbeconstructedfrom¾"O.D.copper( OptionalSpecifications:90/10Copper-nickel,admiralty,stainlesssteel)tubeswithallnon-ferrouswettedpartsandfabricatedsteelhead( OptionalSpecification:Fabricatedstainlesssteelhead,fabricatedcopper-alloyhead).

CONTROLSThewaterheatershall(shallnot)besuppliedwithsteamoperatingcontrols.Acastironpilotoperated( Optional Specifications: Pneumatic,selfoperating,electronic)typesteamcontrolvalveshallregulatetheflowofsteamtotheheatingcoilinordertocontrolwatertemperature.Athermostaticdriptrap,mainF&Tcondensatetrap,Ystrainers,vacuumbreakerandsteampressuregaugeshallbefactorysizedandpipedwiththesteamcontrolvalve.

Inaddition,thewaterheatermaybesuppliedwiththefollowingoptionalfeatures:

Option Domesticwaterdialtemperatureandpressuregaugeshallbefactoryinstalled.

Option Thewaterheatershallbeequippedwithafactorypackagedintra-tankcirculatortoconstantlycirculatewaterwithinthetanktoreducestratification.

Option Theheatingcoilshallbewrappedandbaffledandpipedwithanintegralpumppackagetoforcecirculatewaterovertheheatingcoilinordertoreducethecoilsize.

Option Singlesolenoidsafetysystemtoclosethesteamsupplytotheheatingcoilshouldthewatertemperatureinthetankreachthehi-limitsetpoint.Requires5Amp,120Voltservice.

Option Doublesolenoidsafetysystemdumpsoverheatedwaterinthestoragetanktodraininadditiontoclosingthesteamsupplytothecontrolvalve.Requires5Amp,120Voltservice.

WARRANTYHUBBELLshallwarrantyallcomponentsagainstdefectsinworkmanshipandmaterialforaperiodofone(1)yearfromdateofstart-upandthepressurevesselforafullfive(5)yearsNonPro-Rated( OptionalSpecification:fullten(10)yearsNonPro-Rated)fromdateofstart-up,providedthattheunitisstartedwithinthree(3)monthsofdateofshipmentandinstalledandoperatedwithinthescopeofthetankdesignandoperatingcapability.Eachwaterheatershallbeshippedwithacompletesetofinstallationandoperatinginstructionsincludingasparepartslistandapproveddrawing.

The Electric Heater Company ■ P.O. Box 288 ■ Stratford, CT 06615-0288 ■ Phone: 203-378-2659 ■ Fax: 203-378-3593info@hubbellheaters.com ■ www.hubbellheaters.com

ISO 9001:2008 ISO

Committed to continuous improvement...Continuing research results in product improvement; therefore specifications are subject to

change without notice. For the most updated information, consult the factory directly.

 Made in the U.S.A.

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