Crown Bermuda Installation Manual

WARNING

SOOTDEPOSITSINTHEFLUEPASSAGESAREASIGNTHATTHEBOILERMAYBEOPERATING

ATHIGHCARBONMONOXIDE(CO)LEVELS.AFTERCLEANINGTHEBOILEROFSOOTDEPOSITS,

CHECKTHECOLEVELINTHEFLUEGASTOINSURETHATTHEBOILERISOPERATINGPROPERLY.

IfitisnecessarytocheckCO,useacombustionanalyzer,orotherinstrumentwhichisdesignedtomeasureCOinue

gas.ACO“sniffer”designedfortestingCOlevelsinambientaircannotbeusedtocheckboilercombustion.Takeauegas

samplebyinsertingasampleprobethroughthedraftdiverteropeningandintotheuecollectorsothatthesampleistaken

intheareadirectlyovertheheatexchanger.Donottakeasampleuntiltheboilerhasbeenringforatleastveminutes.

AnormalCOreadingforaBSIseriesboilerislessthan50ppm(0.005%).Areadingofmorethan100ppm(0.01%)is

indicativeofacombustionproblem.

SomecausesofexcessiveCOinclude:

• Incorrectlysizedmainburneroriceforthealtitudeatwhichboilerisinstalled

• Crookedorout-of-roundoriceholes(neverattempttodrilloriceforthisboilerintheeld)

• Partiallypluggeduepassages

• Impropermanifoldpressure

• Foreignmaterialinburnerventurisorburnerports

• Leakinsealbetweenuecollectorandheatexchanger

• Inadequatesupplyofcombustionair

12) Replacetheuecollectorgasketstrips.Ifdesired,RTVsiliconesealantwitha500Fintermittentdutytemperaturemay

besubstitutedforthisropegasket.Theuecollectormustbethoroughlysealedtotheheatexchanger.

13) Replacethe¼-20nutsandwashersthatholddowntheuecollector

14) Reattachallthejacketcomponents.

15) Reinstallburners,beingcarefultoputthepilotmainburnerinitsoriginallocation.

16) Replacetheblockedventswitch.

17)Reconnectthedamperandventsystem.