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Checkthewaterleveleverydayortwo.Verifythewaterlineshownby
operatingthedrainvalveonthegauge.BESURETOPANDBOTTOM
VALVESONGAUGEAREALWAYSOPENSOTHATACTUALWATERLEVEL
WILLBESHOWNATALLTIMES,
Thegaugeglassshouldbedryabovethewaterline.Thewaterlineshould
notbouncemorethanaboutoneinchwhentheboilerissteaming.If
youseewaterdropletscarryingoverthroughthetopofthegaugeglass,
orexcessivebouncingofthewaterline,theboilerneedsto be cleaned.
Followtheinstructionsunder"CleaningYourBoiler."
POP SAFETY VALVE
This valveshouldopenautomaticallywhenthe steampressureexceeds
the safe limit (per instructionspackagedwith valve).Shouldit everfail
to openundertheseconditions,shut downyour system.Havethevalve
replacedimmediately
LOW WATER CUT-OFF
TheLowWaterCut-Offwill interruptthe electricalcurrentto theburner
whenthewaterlineintheboilerdropstoa lowlevel.
On float type low watercut-offs,it is very importantto keepthe float
chamberfree from sediment,a conditionessenlialto dependabilityTo
keepanyaccumulationfrominterferingwithfloatactionisto"BLOWDOWN"
or flush out thecontrolregularly.Thismustbe donetwo to threetimes
duringthe first weekafter installationand oncea weekthereafterduring
theheatingseason.Do it whiletheboileris in operation.Firstnotewater
level in gaugeglass.Open blow-offvalve at bottomof control;water
will pour out, flushingawaysediment.Drain untilwater is clear,about
a pailful,then close valve,g waterlevel in gaugeglass hasdropped,
addwatertoboilertorestorelevel.Consultlowwatercut-offmanufacturer's
instructionsincludedwithboiler.
NOTE: Openingblow-off valvechecks cut-off operationtoo. As float
dropswithfallingwaterlevel,burnerswill shutoff. Aftervalveis closed
andnormaloperatingconditionsarerestored,burnerswillresumefiring.
Forprobetype LowWaterCut-Offs,checkactionof the LowWaterCut-
Offmonthlytomakesureitisprovidingtheproperprotection.See"Checking
and Adjusting"on page23. LowWaterCut-0ff remoteprobesmustbe
removedfor periodicinspectionandcleaning,preferablyatthebeginning
ofeachheatingseason.Morefrequentcleaningmaybe requiredonboilers
requiringconstantor veryfrequentadditionsof makeupwater.
BURNERS
A visualcheckof the pilot and mainburnerflamesshouldbe madeat
leastonceeachyear,preferablyat thebeginningof the heatingseason.
Seepage23.
BOILER FLUE PASSAGES
Undernorma]operatingconditions,with theburnersproperlyadjusted,
it shouldnotbe necessaryto cleantheboilerfluegaspassages.However,
to assuretrouble-freeoperation,we recommendthat you havethe flue
passages,burneradjustment,andoperationof thecontrolscheckedonce
eachyearbya competentServiceTechnician.
Beforethestartof eachseason(or wheneversystemhasbeenshutdown
for sometime)recheckthe wholesystemfor leaks... and recheckthe
boilerandventpipefor leaks.
VENT PIPE
Theventingof thisunitisveryimportantandthepipingshouldbechecked
at leastonce a season.If the vent piping showsany sign of leaking,
replaceit immediately
CLEANING YOUR BOILER FLUE PASSAGES
AND BURNERS
FluePassagesbetweensectionsshouldbe examinedyearlyandcleaned,
if necessaryToclean,removeburners,pilot,andvenl pipe,Removetop
andfrontjacketpanels.Removethetwo screwsattachingtheintermediate
front pand 1o lhe left and righl side jacketpanels.Removethe draft
diverlerandintermediatefrontpanelasa unit.Carefullyremovethecerafeg
gasketstrips. Cleanpassagewaysbetweensectionswitha flexiblehandle
wirebrush.Removedirtfrom botlomof boilerandfrom betweenseclions
by vacuuming,Makesureall flameports in burnersare openand clear.
Shakeout or blow out all loosedirt in burners.Resealseamsbetween
adjacentsectionsasnecessarywith400FRTVsiliconesealant.Reassemble
all parts.Be sureto checktightnessof pilot connectionsand condftion
of burnerflamesafterreassemNy(seeFigures18 and19).Besurevent
pipeconnectionstochimneyaresecureandnoobslructionsarepresent.
FOAMING, PRIMING OR SURGING
Thesetermsareusedto describea fluctuatingwaterline - whenwater
leavestheboilerwiththesteam.
It iscausedbyanycombinationofthefollowing:
1. Threadingoil andorganicmatterin the boiler water,(Mineraloil, or
coresanddoesnotcausesurging.)Followinstructionsunder"Cleaning
YourBoiler."
2. Faultyquick ventsthat do not releaseair unlil a sizeablepressure
is builtup - if old style, reptace it dirty cleanso youcaneasily
blowthroughvalve.
3. Improperheaderdesign- whensteamflowsin oppositedirection
of equalizerlineon "HartfordLoop." Generallya 15" horizontalrun
betweenriser andmaintakeoffwill allowentrainedwaterto fall out
of the steamvaporso it can returnto boiler.(SeeFigures5, 6A
&6B onpages7,8and9).
4. Adjustmentofsteamlimitcontroltoawidedifferentialincreasesdifficulty
if quick ventsare old style, slow-releasingtype or dirty Alwaysset
steamlimitcontroldifferentialaslowaspossible.
5. Soapanddetergentsintheboilerwatercauseextremesurging.Boiler
cleanersandchemicalcleaningadditivesarenotrecommended.If used
andnotrinsedproperlytheywill demoreharmthangood.Thecleaning
procedureslaidout in these instructionswill cleanout the typical
oilsandimpuritiesfoundinnewboilersandinresidentialheatingsystems.
Thebestthingfor yourboilerand heatingsystemis cleanwaterwith
noadditives.
CAUTION ]
Never refill a hot boiler with cold water - the danger
of thermal shock may crack a section.
BOILER WATER TREATMENT (Other Than Cleaners)
In steamsystemswherethe systemis tight, free from leaks,and all
the steamis returnedto the boiler as condensate,the amountof make
upwaterissmall,Watertreatmentis generallynotrequired.
In steamsystemswith less than90% of the steambeingreturnedas
condensate,or wilh veryhardor corrosivemakeup water,treatmentmay
bedesirable.Followtherecommendationsof'yourlocalboilerwatertreatment
speciafisl.
BETWEEN HEATING SEASONS
Boilersshouldnotbedrainedbetweenheatingseasons.Steamboilersshould
beentiretyfilledwithwaterduringthesummermonthstoexcludeair.
5 _1_
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