Hubbell MSH Water Heater User Manual


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Model MSH & MH
Shipboard Electric
Water Heater
Mode MSH/MH
Standard Equipment
Vessel Construction
1. Allweldedcarbonsteelvesseldesignedandbuiltin
strictaccordancewiththeASMECodeSectionIVand
stamped,certied,andregisteredwiththeNationalBoard
ofBoilerandPressureVesselInspectors.
2. Allinternaltanksurfacesarelinedwithaminimumof
5
/8"
thickHydrastonecementforsuperiorprotectionandtank
longevity.
3. Designedfor100psiworkingpressureandhydrostatically
testedat150psi(1
1
/2timestheWP).
General
1. Heavyduty2"thickberglassblanketinsulationcovers
thepressurevesselformaximumoperatingefciencyand
minimalstandbyheatloss.
2. Heavygaugegalvanizedsteelprotectivejacketholds
insulationinplaceandprotectedtoensurehighlyefcient
operation.
3. Integrallyweldedbulkheadattachmentpoints.
4. Entirevesselissupportedonheavydutyintegrallywelded
steelsupportsforsturdydeckmounting.
5. Fullve(5)yearNonPro-Ratedtankwarrantyandone(1)
yearelectricalcomponentwarranty.
6. BronzeASME/CSAratedcombinationtemperatureand
pressuresafetyreliefvalvesetatthevesselworking
pressureand210ºF.
7. ABSapprovedandinconformancewithUSCG
regulations.
Electrical Operating Controls
1. Allelectricaloperatingcontrolsarefactorysized,
selected,wired,tested,andmountedinaNEMA1
enclosuretoensuresafeandreliableoperation.
2. Apowerdistributionblockissuppliedforsinglepoint
electricalinstallation.
3. Powerfusesratedatamaximumof60Ampsprotect
eachheatingelementbranchcircuitperNECandUL
requirements.Eachbranchcircuithasamaximumrating
of48Amps.
4. Heavydutydenitepurposemagneticcontactorwith
integrallymountedpowerfuseblockassemblyswitches
poweron/offtoeachbranchcircuit.
5. Heavydutyremovableangetypeimmersionheating
elementprovideslongservicelife.
6. Fullyadjustablethermostatmaintainsaccuratewater
temperatureandissizedbythefactorytocontrolthe
appropriatenumberofheatingelementcircuits.
7. Agenerouslysizedtransformerprovidesfused120Vto
thecontrolcircuit
8. Afullyadjustable(100-240ºF)safetyhi-limitdevicewith
manualresetinterruptspowertothecontrolcircuitinthe
eventofover-temperaturewaterinthestoragetank.
9. Safetydoorinterlockmechanisminterruptspowertothe
controlcircuituponopeningtheelectricalcontrolpanel.
10. Louversinthecontrolpanelallowforcoolingofthe
electricalcomponentstoensuremaximumelectrical
componentlongevity(whenrequired).
Model MSH/MH
Optional Equipment
Vessel
1A. Alternate protective lining:
Phenolicepoxyresin.
1B. Alternate vessel construction:
StainlessSteel(PleasespecifyType:304,316or316L)
90/10Copper-Nickel,other.
1C. Alternate working pressure:
Pleasespecify
General
1. SkidmountingonheavydutyallweldedIBeam
2. Type304stainlesssteelprotectivejacket,
pleasespecifyifpainted.
3
. Dualenergypackageprovidesoperationalexibility
forelectricand(steamorboiler
water)power.
Seepage8fordetails.
Electrical
1. NEMA4watertightenclosureforoutdoor/wetlocations.
2.Explosionresistantenclosureforhazardouslocations.
Pleasespecifyclass,division,andgroup.
3.Built-incircuitbreaker(withorwithoutshunttrip)ora
built-innon-fusedOn/Offdisconnectswitch.
4.Alternateelementsheathmaterial(Pleasespecify:
Incoloy,StainlessSteel,other).
5.Specializedheatingelementconstructionincluding:
Specialwattdensityrating,passivation,electropolishing,
hermeticsealsoranyotherfeaturerequiredtomeetthe
needsofyourapplication.
6.Factoryinstalledlowwatercutoutdevicetodisengage
electricallytheheatingelement(s)intheeventof
insufcientwaterinthetank.
7.Dialthermometerandpressuregaugefactoryinstalledin
thetank.
8.Intra-tankcirculationpumppackagewithOn/Offswitchto
continuouslycirculatewaterwithinthetankandthereby
reducestratication.Allbronzecirculatorpumpisrated
1/12HP,120V,1Ph.
9.Statusindicatinglamp(s).
10.Audiblealarmsystem.
11.Digitaldisplayelectronictemperaturecontroller.Please
specifywithorwithoutRS485communicationportfor
remoteoperationofthetemperaturecontroller.
12.Additionalgroundconnections
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