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STEAMVENTS
Beforea steamsystemwilloperateproperly,suitablesteamventsmustbe
installedin eachradiatoras wellasthe returnmain.Somesystemsrequire
steamtrapsinthereturnlineattheradiationunit.
The"Hartfordloop"isa pipingarrangementwhichmustbeincluded(Fig.8)
forproperoperationofthesteamsystem.
BOILERSWITHTANKLESSCOILSONLYFlowRegulatorandWater
TemperingValve
Ifyouhavea TanklessCoilfordomestichotwater,thesetwopartscanbe
used.Thiswillprovideyouinstantaneoushotwaterthatisneither
scaldinghotnormerelytepid.TheFlowRegulatorisplacedinthecoldwater
linetothecoil.It assuresa steadyflowofwatersothatthecoilcanproperly
heatit. It prevents"spurts"of "half-heated"water.Thisisimportantwherethe
waterpressureisexcessivelyhighorvariable.TheWaterTemperingValve
is ateewhichis connectedata junctionbetweenthehotwaterlinefromthe
coilandacoldwaterbranchfromthesupplyline.Itmixeshotandcoldwater
as requiredto furnisha temperedsupplyof watertothe house.Thewater
willbejusttherighttemperatureforyouruse.Thisisimportanton a steam
systemto preventscaldingtemperaturesatthefaucets.Bothpartsare self-
containedandautomatic.
Starting Your Boiler
HOWASTEAMSYSTEMOPERATES
Thewaterintheboilerisheateduntilit reachestheboilingpoint.Asthe
waterboilsit turnsintosteam.Thesteamrisesfromthetopofthewater
throughthesupplymainto theradiationunits.Asit passesthroughthe
radiatorsitreleasesitsheatandcondensesintowater.Thewaterreturns
totheboilerthroughthereturnmain.
FILLINGSYSTEMWITHWATER
Onsteamheatingsystemstheboileris partiallyfilledwithwater.Itisvery
importantto theproperoperationoftheentiresystemthatyourboilerbe
filledtotheproperlevel.Thecorrectwaterlevelon coldstartconditionis
abouthalfwayupthe glasswaterlevelgaugeasmarkedon theboiler
jacket.Tofill:
1.Closetheboilerdrainvalve.
2. Openthevalvesatthetopandbottomoftheglasswaterlevelgauge.
Alsoopenthedrainvalveatthebottomofthegauge.
3. OpenthefilIvalveandatlowwatertorunintotheboiler.
WARNING- Neverrunwaterintoa hotemptyboiler,
4.Allowboilertofilluntilwaterrunsoutthegaugedrainvalve.Then
closethegaugedrainvalve.
5.Continuetofillboileruntilwaterreachestheindicatedwaterline.This
Checking and Adjusting
isabouthalfwayuptheglasstube.Alwayskeepthewateratthislevel
whensystemisoff.
IMPORTANT
Skimminga newsteamboileronan existingsystemmustbedoneseveral
timestoremoveall oil,greaseandsediment.Thereshouldbe a teewitha
plugpipedtothesupplylineoftheboilerinordertoproperlyskimtheboiler.
Wheneverthewaterin the glassgaugebecomesdiscolored,yourboiler
shouldbeskimmed.
Whenskimming,makesuretopipetheopenendoftheteetothefloorora
drainto preventanyonefrom beingburnedbythe steamand hotwater
whichwillbereleased.
TheFloatLowWaterCut-offshouldbe blowndownafterskimming.Following
blowdown,allowtheboilertocoolandthenaddfreshwaterslowly.
Thefloatchamberofthelowwatercut-offmustbeflushedcleanandmaintained
clearof sedimentto allowfree movementof the float.This mustbe done
frequentlyduring initialoperationof the boilerand at least onceper week
thereafter.Followinstructionsontagattachedto control.Neverthrottlea steam
radiatorvalve on a one-pipesystem.It mustbe fully openor fully closed.
Otherwisewaterisheldintheradiatorunits.Thiswillcauseknockingsounds.
Skimmingmayberequiredagainafterafewdaysoperation.
CHECKINGCONTROLS
To checkthe LowWaterCut-Off,turnoff powerto theboileror turnthe
thermostatdownto the lowestsetting.Drainwaterto belowthevisible
bottomofthewatergaugeglass.Turnpoweronandturnthethermostatto
callforheat.WhentheboilerisequippedwiththefloattypeLWCO,theoil
burnershouldnotrunonacallforheatwhenthewaterislow.
To checkthe pressurelimit, run the boileruntil the pressurereaches
systemdemand.Thenturn the pressurescrewand dropthe pressure
settinguntiltheboilershutsdown.Thiswillshowthatthepressurelimitis
operatingproperly.
If youhaveinstalledyourownboiler,we recommendthat youcallforan
inspectionby a servicetechnician.The peace of mind and assured
performanceare wellworththe costinvolved.Hecanquicklymakethe
necessarychecksandadjustments.
OIL BURNERADJUSTMENT
Suggestednozzlesand preliminaryburnersettingsarefoundon page20.
Referto youroil burnerownersmanualfor checkingand adjustingthe
burner.
ADJUSTOPERATINGCONTROLSInstructionsforeachcontroland
burnerareincluded.
Betthermostatheatanticipatorat.20.Instrucfionsforthefinaladjustmentof
thethermostatarepackagedwiththethermostat.
CHECKTHERMOSTATOPERATION
Whensetabovetemperatureindicatedon the thermometer,boilerburner
shouldstart. Makecertainthe thermostatturnsoff the boilerwhenroom
temperaturereachesthe selectedsettingand startsthe boileroperating
whenroomtemperaturefallsafewdegrees.
Finally,setthethermostatforthedesiredtemperature.Specialconditionsin
yourhomeandthelocationofthethermostatwillgovernthissetting.
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