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8
Optional Steam Package
8
Benet Of Dual Fuel Capability
TheHubbellmodelMSHandMHwaterheaterisavailable
withafactoryinstalledheatexchangertoprovideheating
capabilityutilizingshipssteamorboilerwater.Whilethe
shipisunderwayandtheboilersareproducingsteam,
thewaterheaterwilloperatein“primary”modeanduse
steamtoheatthewater.Whentheshipisdockside,and
steamgenerationisreduced(orcompletelyshutdown),the
operatorcanswitchthewaterheaterovertoelectricheating
modebysimplyturningaswitchontheHubbellcontrolpanel
whichactivatesthefactorypackagedandinstalledelectric
immersionheaters.Thisdualfuelcapabilityprovidesship
operatorswithcompleteexibilityindeterminingwhichfuel
modeismostadvantageoustooperateatanygiventime.
Electric
ControlPanel
Electric
Heater
SteamHeating
Coil(steam
controlsnot
shown)
Standard Features
Steam Heating Coil
1. Ahighqualityfactoryinstalled2passU-Tubeheating
coilconstructedfrom18BWG
3
/4"O.D.singlewall
coppertubingdesignedforamaximumworking
pressureof150psi.
2. Allwettedpartsincludingthetubesheetandbafes
arenon-ferrousformaximumlongevity.
3. HeavydutyfabricatedsteelheadwiththreadedNPT
steamandcondensateconnections.
Optional Features
Optional vessel construction and optional general
construction features as shown on page 3.
Steam Heating Coil
1. Doublewalltubingwithaleakdetectionport
2. Alternate tubing material please specify:
(StainlessSteel,90/10Copper-Nickel,Other)
3. Fabricated steam head constructed from:
(StainlessSteel,CopperAlloy,Other)
Operating Controls
4. Steamcontrolsarefactoryselectedandsized,but
shippedlooseforintheeldinstallationbyothers.
5.Varioussteamcontrolvalvesareavailabletomeet
thespecicneedsofyourapplication,please
specify:Self-operatedtype,pneumaticoperated,
electricmotoroperated,separatepressure
reducingpilottype.
6.Singlesolenoidsafetysystemclosesthecontrol
valveshouldthewatertemperatureinthetank
reachthehi-limitsetpoint.Requires120volt5
ampelectricalservice.
7.Adoublesolenoidsafetysystemdumpsover
heatedwaterinthestoragetanktodrainin
additiontoclosingthecontrolvalve.Requires120
volt5ampelectricalservice.
8.Dialwaterthermometerandpressuregauge
factoryinstalledinthetank.
9.Factorywrappedandbafedsteamcoilwith
integralpumppackage.
10.SteamControlstobecaststeelconstruction.
Steam Operating Controls
1. Steamoperatingcontrolsarefactoryselected,sized,
piped,andtestedtoensurereliableoperation.
2. Allsteamcomponentsarefactoryplumbedwith
schedule40blackironpipeandreadyforsteamand
condensateconnections.
3. Highqualitycastironpilotoperatedsteamcontrol
valvemodulatestheowofsteamthroughthe
heatingcoiltoprovideaccuratewatertemperature
control.
4. CastironYstrainerwith20Meshscreenprotectsthe
steamcontrolsandcoilfromdirtanddebrisinthe
steamsupply.
5. Thermostaticdriptrapremovescondensatefromthe
steamsupplyline.
6. Heavydutycastironoatandthermostaticmain
condensatetrapforoptimumefciency.
7. Brassvacuumbreakeranddialsteampressure
gaugeinstalledintheheatingcoilhead.
Note: Additionalsteamandboilerwaterdesignliterature
isavailableinHubbellbrochurestitled“ST”,“BW”and
“HeatingCoils”.
Marine Products Division