IBC SFC-99 User manual

120-242E1 |1
SFC 99 / SFB 99 - Fuel Conversion to
Propane - P-804
Note
Ifconvertingfrompropanetonaturalgas,orderthenaturalgasconversionpartskit(IBCPart#P-
805)fromyourauthorizedIBCdistributor.
Usethepropanegasconversionpartskitifthefuelsourceatthesiteusespropaneandtheappliancehas
beensetup(factoryfire-tested)tooperatewithnaturalgas.Checktheratingplateontheappliancetosee
whichfuelsourcetheparticularappliancehasbeensetupwith.
Usingthisconversionkit,aqualifiedtechnicianwillneedto:
1. Performafuelconversion.
2. Performacombustiontest.
3. Fillintheinformationrequiredonthefuelconversionlabels,andaffixthemtotheapplianceafterthe
conversioniscompleted.
Warning
Thisconversionkitshallbeinstalledbyaqualifiedserviceagencyinaccordancewiththe
manufacturer’sinstructionsandallapplicablecodesandrequirementsoftheauthorityhaving
jurisdiction.Iftheinformationintheseinstructionsisnotfollowedexactly,afire,anexplosionor
productionofcarbonmonoxidemayresultcausingpropertydamage,personalinjuryorlossof
life.
Thequalifiedserviceagencyisresponsiblefortheproperinstallationofthiskit.Theinstallationis
notproperandcompleteuntiltheoperationoftheconvertedapplianceischeckedasspecifiedin
themanufacturer’sinstructionssuppliedwiththekit.
Theappliancewillautomaticallyde-ratethemaximuminputatarateofapproximately2%per1,000'above
4,500'.Thegasvalve'szero-governorensuresthatthegas-airmixtureisnotaffectedataltitude.
IncludedwiththeConversionKit:
Fuel Conversion Kit, NG to LP - Superflow SFC 99, SFB 99
Part # Description Quantity
180-217 LPorifice#315 1
150-175 OrificeO-ring19x2 1
080-302 Ratingplateoverlay 1
080-107 Gasvalveconversionlabel 1
080-244 InstallerIdentificationlabel 1

Combustion Test Target Ranges
Figure: Gas valve and fan
TheLowFire(zero-offset)valveadjustmentcaponthegasvalvehasbeenfactoryset.Donotadjustthisscrewin
thefieldunlessindicatedintheseinstructions.
Afterconvertingtheappliancetopropane,acombustion(CO2)readingmustbetakenbyaqualifiedtechnician
usingproperlyfunctioningandcalibratedcombustionanalyzingequipmentandtheresultscomparedtothevalues
inTable1.
Propane CO2 Value (%) at High Fire with front
cover open
CO2 Value (%) at Low Fire with front
cover open
Max.CO2value 11.5% ActualValueatHighFireMinus -0.3%
Min.CO2value 9.8% 9.5%
Table 1 - Propane CO2 values at High and Low Fire
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SFC 99 / SFB 99 - Fuel Conversion to Propane - P-804 |3
Fuel Conversion Instructions
Youmustbeaqualifiedtechniciantoperformafuelconversion.
Model Number Orifice Size
SFC15-99/SFB15-99 315
Table 2 - Propane Orifice Chart
To perform a fuel conversion:
1. Turnoffthegassupplyatthemanualgasvalve.
2. Disconnecttheelectricalpower.
3. Disconnectthenutatthegasvalveoutlet(topofthegasvalve),andremovetheO-ringandorifice.
4. InsertthecorrectorificeintotheO-ring,andre-installintothenutatthegasvalveoutlet(topofthegas
valve),andthentightenthenut.
5. Restorethegassupplybyopeningthegascontrolvalve.
6. Testforleaksbyusinganapprovedleakdetectionsolutiononalljoints.
7. Powerontheappliance.
Now,carefullyfollowtheproceduresonCombustionTestingandAdjustment.

Combustion testing and adjustment
Danger
Acombustiontestchecksthatthegasvalveisoperatingproperlyinthefield.Toperformacombustion
test,youmustbeaqualified,trainedandlicensedgasfitter.
Makingadjustmentstothegasvalvewithoutaproperlycalibratedgascombustionanalyzerandby
peoplewhoarenottrainedandexperiencedinitsuseisforbidden.Failuretouseananalyzercan
resultinanimmediatehazard.
Model Number High Fire Input
SFC15-99/SFB15-99 99MBH
Table 3 - Rated input of a converted appliance
Normalignitionsystemsequenceofoperation:
Theappliance'scontrol,uponacallforheatorDHW,turnsonthecombustionfanfora5-secondpre-purge,then
energizesthesparkelectrodeandgasvalvefora5-secondtrialforignition.
Iftheburnerdoesnotlight,theprocessisrepeateduntiltheburnerlightsandflameisdetected.After4
unsuccessfultrialsforignition,theappliancelocksoutandwillneedtobemanuallyresetbypressingtheReturn
Arrow button.
To perform a combustion test and adjustment:
1. Turnofftheappliance’smanualgasvalve.
2. WithaTorx15screwdriver,opentheinletgassupplypressuretestportby
turningitsscrew1fullturncounterclockwise.
3. Attachamanometertotheinletpressuretestportandturnongasto
appliance.
Staticmanometerreadingshouldbeideally11"w.c.forPropane.
Minimumandmaximumstaticpressuremustbebetween5"and14"
w.c.Monitorpressurethroughoutthecommissioning(start-up)
procedure.Pressuremaydroopupto1"w.c.athighfire.
4. Tosettheappliancetohighfiremanually,createalargeDHWdemandfortheappliancetoheat.:
Allowtheappliancetoignite/runagainstalargeload,tomaintainhighfire.Tosetthehigh-firemanually,
pressandholdtheServiceiconfortwoseconds.ThenwhileholdingtheServiceiconpressthePlusbutton
twice.“H”willshowintheservicedisplayastheapplianceentershighfire.
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SFC 99 / SFB 99 - Fuel Conversion to Propane - P-804 |5
Note:AllowtheappliancetooperateatHighFirefor3minutestostabilize.(Theapplianceoperatesin
manualmodefor10minutesthenswitchbacktothenormaloperatingmode.Toextendmanualmode
operation,presstheService andPlusbuttonstogethertwicewhiletheapplianceisoperatingin
manualmodetoresetthetimerfor10moreminutes.)Donotmakeadjustmentsiftheservicedisplay
showsan“h”.
5. a. Whileinmanualhighfire,toconfirmfullmaximumratingplateinput(estimated):
i. Press ServicebuttonfortwosecondstoentertheInformationmenu.
ii. Press Plusbuttonrepeatedlyuntiltherightwindowindicates"F".Theinputisdisplayed
intheMainwindow.
iii. Press FlamebuttontoreturntotheServicemenu.
b. Withacombustionanalyzerprobeinthefluegastestport,checkthemeasuredresultsagainst
Table 1 -HighFire.
c. Iftheresultsareoutsidethepermittedrange,checktheinletpressure,andconfirmthatthecorrect
orificeandventuriareinstalled.
6. SwitchtheappliancetolowfirebypressingtheServicebuttonandMinusbuttonatthesametime.The
appliancewilldroptolowfire.“L”willshowintheservicedisplay.
a. ComparethereadingswithTable 1 -LowFire.Ifadjustmentisnecessary,removetheLowFire
AdjustmentcaptorevealaTorxheadscrew.
b. Maketinyadjustments,typicallylessthan1/8thofaturnatatime.Turnthescrewclockwiseto
increaseCO2andcounter-clockwisetoreduceCO2.Ifthetargetcannotbemet,evenafterahalf
turn,contactthefactory.
c. Whenfinished,replacetheLowFirecap,andleavethemanualmodebypressing+AND-
simultaneously.
7. Switchofftheappliancebypressingthespaceabovethedot.
8. Turnoffthegasattheappliance'smanualgasvalve.
9. Removethefluegasanalyzerfromthetestport,andreinstallthetestportcap.
10. Removethegaspressuremanometerfromthegasvalve,andfullyclosethetestport.
11. Turnonthegasattheappliance’smanualgasvalve.
12. Ensuretherearenogasleaksbeforereinstallingthefrontcover.
13. Turnontheappliancebypressingthespaceabovethedot.
Completing and Affixing the Conversion Labels
1. Fillintheconversionlabels(includedinthekit)associatedwiththenewfueltype.
2. Placetheconversionlabelsontotheapplianceasindicatedonthenextpage.

Where to Place Conversion Labels on the appliance
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