Marsal & Sons MB42 Installation instructions

INSTALLATION & OPERATING MANUAL
Marsal&Sons,Inc.DeckOvens:MB42,MB60,MB236,MB260,MB866,SD236,SD248,SD260,SD448,SD660,
SD1048,SD1060,SD866,SD10866,WF42,WF60

FORYOURSAFETY
DONOTSTOREORUSEGASOLINEOROTHERFLAMMABLEVAPORSANDLIQUIDSINTHEVICINITYOF
THISORANYAPPLIANCE.

FORYOURSAFETY
POSTINSTRUCTIONSTOBEFOLLOWEDINTHEEVENTTHEUSERSMELLSGASINAPROMINENT
LOCATION.THISINFORMATIONSHALLBEOBTAINEDBYCONSULTINGYOURLOCALGASSUPPLIER


WARNING
IMPROPERINSTALLATION,ADJUSTMENT,ALTERATION,SERVICEORMAINTENANCECANCAUSE
PROPERTYDAMAGE,INJURY,ORDEATH.READTHEINSTALLATION,OPERATING,AND
MAINTENANCEINSTRUCTIONSBEFOREINSTALLINGORSERVICINGTHISEQUIPMENT.

ELECTRICALGROUNDINGINSTRUCTIONS
THISAPPLIANCE,WHENINSTALLED,MUSTBEELECTRICALLYGROUNDEDINACCORDANCEWITHLOCAL
CODES,ORINTHEABSENCEOFLOCALCODES,WITHTHENATIONALELECTRICALCODE,ANSI/NFPA70,ORTHE
CANADIANELECTRICALCODE,CSAC22.2ASAPPLICABLE.

THISAPPLIANCEISEQUIPPEDWITHATHREEPRONG(GROUNDING)PLUGFORYOURPROTECTIONAGAINST
SHOCKHAZARDANDSHOULDBEPLUGGEDDIRECTLYINTOAPROPERLYGROUNDEDTHREE‐PRONG
RECEPTACLE.DONOTCUTORREMOVETHEGROUNDINGPRONGFROMTHISPLUG.

KEEPTHEOVENAREAFREEANDCLEARFROMCOMBUSTIBLEANDNONCOMBUSTIBLECONSTRUCTION.DO
NOTOBSTRUCTTHEFLOWOFCOMBUSTIONANDVENTILATIONAIR.
!
THISOVENHASZEROCLEARANCEONBOTHSIDESBUTA3”‐4”SPACEMUSTBELEFT
ATTHEREARTOALLOWADEQUATECLEARANCEFORAIROPENINGSINTOTHE
COMBUSTIONCHAMBERINSURINGPROPERCIRCULATIONOFAIRINTOTHEBURNER
SYSTEM.
ANELECTRICALDIAGRAMISLOCATEDONTHEINSIDEOFTHECONTROLDOORONALLMBSERIESOVENS.

THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE
©2016MarsalPizzaOvens175E.HoffmanAve.Lindenhurst,NY11757(631)226‐6688www.marsalsons.com

1

INSTALLATION&OPERATINGMANUAL


TABLEOFCONTENTS
I.
INSTALLATIONMANUAL
SERVICEACCESS 2
ELECTRICALCONNECTION 2
GASCONNECTION 2
GASANDELECTRICALSPECIFICATIONS 3
DELIVERY 4
OVENLOCATION 4
ADJUSTMENTSASSOCIATEDWITHINITIALINSTALLATION 4
ASSEMBLYINSTRUCTIONS 5
VENTILATION‐CANOPYMETHOD 6
VENTILATION‐DIRECTCONNECTIONMETHOD 6
VENTILATIONPROBLEMS 8
INSTALLATIONOFBAKINGCHAMBERBRICKS 8
CURINGTHEOVENDECK 13

II.
OPERATINGMANUAL
STARTINGTHEOVEN 14
OVENCONTROL 15
MAINTENANCE 15
CLEANINGTHEOVEN 16
WFOPERATION 17


2

INSTALLATIONMANUAL


Installationmustconformwithlocalcodes,orintheabsenceoflocalcodes,withtheNationalFuelGasCode,
ANSIZ223.1,NaturalGasInstallationCodes,CAN/CGA‐B149.1,orthePropaneInstallationCode,CAN/CGA‐
B149.2,asapplicable.
1.
Theapplianceanditsindividualshutoffvalvemustbedisconnectedfromthegassupplypiping
systemattestpressuresinexcessof½psig(3.45kPa).
2. Theappliancemustbeisolatedfromthegassupplypipingsystembyclosingitsindividualmanual
shut‐offvalveduringanypressuretestingofthesupplysystemattestpressuresinexcessof½
psig(3.45kPa).
SERVICEACCESS
AllservicecanbedonethroughtheControlDooropeningandtheBurnerDooropening.Anaccesspanelis
locatedontheleftsideoftheovenformoreaccesstothecontrols.Ifthisisblockedoffallservicecanbedone
fromthefrontoftheoven.

ELECTRICALCONNECTION
A15AMPservicemustbeprovidedforMBSeriesandWFSeriesovens.For115Voltusage,acordandplugis
providedbutconnectiontotheelectricalservicemustcomplywithlocalcodes;orintheabsenceoflocal
codes,withtheNationalElectricalCode,ANSI/NFPANo.70(orlatestedition)

GASCONNECTION
A¾”NPTinletislocatedattherearoftheoven.Undersizedgassupplylineswillrestrictgassupplyandaffect
ovenperformance.Ifotherappliancesaresuppliedbythesamesupplylinethesupplylinemustbesizedto
carrythecombinedvolumewithoutcausingmorethan½”pressuredropatthemanifoldofeachapplianceon
thelineatfullrate.Wheninstallingastackedovenwithoneline,thelineshouldbe1”totheteeandthe3/4”
intoeachoven.

NOTE:Duringinstallation,therewillbeairintheline.Theairmustbebledoffbeforeignitioncanbe
established.

GASPIPING

Aproperlysizedgassupplysystemisessentialformaximumovenperformance.Pipingshouldbesizedto
provideasupplyofgassufficienttomeetthemaximumdemandofallappliancesonthelinewithoutlossof
pressureattheequipment.

AdditionalGasConnectionInstructions

3

GASHOSERESTRAINT

Iftheovenismountedoncasters,acommercialflexibleconnectorwithaminimumof3/4”(1.9cm)inside
diametermustbeusedalongwithaquickconnectdevice.

Therestraint,suppliedwiththeFlexibleHoseKit,mustbeusedtolimitthemovementoftheunitsothatno
strainisplacedupontheflexibleconnector.Withtherestraintfullystretchedtheconnectorshouldbeeasyto
installandquickconnect.

1. Mountthesuppliedbrackettotheangleironweldedacrossthebackofthestand.

TheconnectormustcomplywiththeStandardConnectorsforMovableGasAppliances,ANSIZ21.59or
ConnectorsforMoveableGasAppliancesCAN/CHA‐6.16andaquickdisconnectdevicethatcomplieswiththe
StandardforQuickDisconnectDevicesforUseWithGasFuel,ANSIZ.41orQuickDisconnectForUseWithGas
FuelCAN1‐6.9.Adequatemeansmustbeprovidedtolimitthemovementoftheappliancewithoutdepending
ontheconnectionandthequickdisconnectdeviceoritsassociatedpiping.

GASANDELECTRICALSPECIFICATIONS
Models
InputRateManifoldPressureElectricalRequirements
(MBSeriesandWFSeriesOnly)

NATURAL
GAS

PROPANE
GAS

NATURAL
GAS
PROPANE
GAS
MB42,SD448,
SD1048

95,000

90,000

4.5IN.WC

11IN.WC

Volts120VAC

MB60,SD660,
SD1060

130,000

125,000

4.5IN.WC

11IN.WC

Frequency60Hz
SD236,MB236

50,000

50,000

3.5IN.WC

10IN.WC

0.9AMPSPhase1
SD248

65,000

65,000

4.5IN.WC

11IN.WC

SD260,MB260

80,000

80,000

4.5IN.WC

11IN.WC

MB866,SD866,
SD10866

130,000

125,000

4.5IN.WC

11IN.WC

WF42
135,000 135,000 4.5Main
3.5Side
11Main
10Side
WF60
155,000 155,000 4.5Main
3.5Side
11Main
10Side
WARNING!!Ournaturalgasrunsona½lb.system.Anyhigherpressuremustbereducedto
½lb.priortotheoven. 

4

DELIVERY
Marsal&Sons,Inc.cannotassumeresponsibilityforlossordamagesufferedintransit.Thecarrierassumed
fullresponsibilityfordeliveryingoodorderwhentheshipmentwasaccepted.Weare,however,preparedto
assistyouiffilingaclaimisnecessary.
OVENLOCATION
Theovenshouldbeinstalledinalocationinwhichthefacilitiesforventilationpermitsatisfactorycombustion
ofgasandproperventing.Theovenshouldbelocatedsoasnottointerferewithpropercirculationofair
withintheconfinedspace.Inbuildingswherenormalinfiltrationdoesnotprovidethenecessaryair,outside
air“makeup”shouldbeintroduced.

Itisessentialthatanadequateairsupplytotheovenbemaintainedtoprovideasufficientflowofcombustion
andventilationair.

Placetheoveninanareathatisfreeofdrafts.

Donotplacetheovenonacurbbaseorsealtoawall.Thiswillrestricttheflowofairandprevent
properventilation.Pilotoutagesoryellow,floatingflamesonthemainburnersareindicativeofa
lackofsecondaryair.
Beforemakinganyutilityconnectionstothisoven,checktheratingplatetobesuretheovenspecifications
arecompatiblewiththegasandelectricalservicessuppliedfortheoven.Theratingplateislocatedonthe
insidewallofthecontroldoorarea.
ADJUSTMENTSASSOCIATEDWITHINITIALINSTALLATION
Eachoven,anditscomponentparts,havebeenthoroughlytestedandinspectedpriortoshipment.However,
itisoftennecessarytofurthertestoradjusttheovenaspartofanormalandproperinstallation.These
adjustmentsaretheresponsibilityoftheinstaller,ordealer.Sincetheseadjustmentsarenotconsidered
defectsinmaterialorworkmanship,theyarenotcoveredbytheOriginalEquipmentWarranty.Theyinclude,
butarenotlimitedto:

calibrationofthethermostat

adjustmentofthedoors

burneradjustments

leveling

testingofgaspressure

tighteningoffasteners
Noinstallationshouldbeconsideredcompletewithoutproperinspection,andifnecessary,adjustment
byqualifiedinstallationorservicepersonnel.

5

ASSEMBLYINSTRUCTIONS


Forallovenmodels:
1.
Placetheovenbaseinthefinallocation.

2.
Levelthebasefromlefttorightandfronttobackbyadjustingthelegsineachcorner.
3.
Placetheovenbodyontopoftheovenbasemakingsurethatthefrontandthefrontcornersare
evenbetweenthebaseandthebody.**Withstackunits,theoventhatwasshippedwiththebaseis
thebottomoven.
4.
Installthetwo1/4x20x1”boltsthroughthefrontofthebaseintothefrontofthebodyfrom
underneaththebase.Next,alignthebackcornersofthebodyandthebasetogetherandinstallthe
othertwo1/4x20x1”boltsthroughthebackofthebaseandthebackofthebody.
5.
Forstackableunits,placethetopovenonthebottomovenandaligntheirfrontandsides.The
weightoftheunitwillkeepitinplace.
6.
Connectagaslinetothebackofeachovenandfollowalllocalgascodesinconnectingtothegas
supply.
7.
Plugintheelectricplugforthelighttoanelectricpowersupply. (ForMBOvensOnly) 
Onthe WFOvens thepowersupplyisfortheelectronicignitionofthesideburner.
8.
Connecttheexhaustsystemtotheflueoftheoven.
NOTE:FOLLOWALLLOCALFIREANDSAFETYCODESFORVENTINGANOVEN.IFTHEOVENIS
BEINGINSTALLEDUNDERACANOPYHOOD,THE6”X14”STAINLESSSTEELFLUEVENTMUST
BEINSTALLED.AHOODISALWAYSRECOMMENDEDEVENWHENDIRECTVENTED.
9.
ThebaseshouldbesealedtothefloorusingaNSFapprovedsealant.
10.
Onthe WFOvens, thestainlesssteelshelfisinstalledAFTERthecookingsurfaceisinstalledand
cured.

6

VENTILATION 
Localcodesandconditionsvarygreatlyfromoneareatoanotherandmustbecompliedwith.Thefollowing
aretheminimumrequirementsforgoodventilation.Pleaserememberthatthesearegeneral
recommendationsorguidelinesandyoumayhaveaspecialconditionorproblemthatwillrequirethe
servicesofaventilationengineerorspecialist.
PROPERVENTILATIONISTHEOVENOWNER’SRESPONSIBILITY.
Improperventilationwill
inhibitovenperformance,suchasthepilotgoingoutortheburningofthebottomofpies.
Marsal&Sons,Inc.cannotassumeresponsibilityforlossordamagesufferedasaresultofimproper
installation.

WARNING:
Failuretoproperlyventtheovencanbehazardoustothehealthofthe
operatorandmayresultinoperationalproblems,unsatisfactorybakingandpossible
damagetotheequipment.
Damagesustainedasadirectresultofimproperventilationwillnotbecoveredbythe
Manufacturer’swarranty.
CANOPYMETHOD
(Whentheexhaustfromtheovendumpsintothecanopyhood)

Theidealmethodofventingagasovenisthroughtheuseofaproperlydesignedventilationhoodwhich
extends10”‐12”infrontoftheoven.The SHORTSTAINLESSSTEELFLUE thatissuppliedwiththeoven
MUSTBEINSTALLED .Placetheflueoverthecollarthatislocatedonthetopoftheovenandpressdown
untilitisfirmlylockedinplace.Theangleshouldfaceforwardandalwaysawayfromanyfilters.Astrong
exhaustfanwillcreateavacuumintheroom.Foranexhaustsystemtoworkproperly,replacementairmust
beintroducedintotheroom.Inthecaseofafilteredhood,thehoodmustbedesignednottopullexhaustout
oftheoven.
Thehoodshouldbesizedtocompletelycovertheequipmentplusanoverhangofatleast6”(15cm)onall
sidesnotadjacenttoawalland10”‐12”(25.4‐30.4cm)infrontoftheoven.Thedistancefromthefloorto
theloweredgeofthehoodshouldnotexceed7’(2.1m).
THERECOMMENDEDCFMFORTHEHOODISAPPROXIMATELY150CFMPERLINEARFOOT
Thecapacityofthehoodshouldbesizedappropriatelywithprovisionsforanadequatesupplyofmake‐upair.
DIRECTCONNECTIONMETHOD
(Whentheexhaustfromtheovenisdirectlyventedtotheoutside)

Anunrestrictedventpipethatprovidesexitairattheovenofaminimumof55CFMperovenmustbe
providedfortheventpipeatthetopoftheoven.Theventpipeshouldbeaminimumof6”indiameter. A
DRAFTDIVERTER(ordrafthood)MUSTBEINSTALLEDforadirectventconnectionsysteminorderto
workproperly.Nomorethantwo90°elbowsshouldeverbeusedinadirectventconnectionandall
horizontalrunsmusthaveatleasta1”perfootpitch.

7

DIRECTCONNECTIONMETHOD(continued)
WARNING:
Itisessentialthatthedirectfluebeinstalledasfollows.Incorrect
installationwillresultinunsatisfactorybaking,ovendamage,andpilotoutages.

ThefluemustbeclassBorbetter.Theheightoftheflueshouldrise6‐8ft(2‐2.5m)abovetheroofofthe
buildingoranyproximatestructure.TheflueshouldbecappedwithaULListedtypeventcaptoisolatethe
unitfromexternalenvironmentalconditions.
Thedirectventcannotreplaceairconsumedandventedbytheoven.Provisionsmustbemadetosupplythe
roomwithsufficientmake‐upair.Totalmake‐upairrequirementsforeachovensectionshouldbe
approximately30CFMpersection.Toincreasethesupplyairenteringtheroom,aventilationexpertshould
beconsulted.
INSTALLINGTHEDRAFTDIVERTER

Ovensorderedfordirectventingaresuppliedwithadrafthood.Installthedrafthoodasfollows:


1. Placethedraftdiverterovertheflueconnector.
2. Installtherestoftheventingsystemtothedrafthood(draftdiverter).

FAILURETOINSTALLADRAFTDIVERTERWHENUSINGADIRECTCONNECTIONMETHODWILL
CAUSEPILOTOUTAGES,IMPROPERBAKING.SERVICECALLSTHATAREMADEBECAUSETHE
PROBLEMISTHEABSENCEOFANINSTALLEDDRAFTDIVERTERARENOTCOVEREDUNDER
WARRANTYANDALLCOSTSWILLBETHERESPONSIBILITYOFTHEOWNER.
HoodHood

8

VENTINGPROBLEMS

Iftheventingofanydeckoveniseitherrestrictedorforcedinanywaythebakingcharacteristicsoftheoven
willbeadverselyaffected.
Examplesofrestrictedventinginclude:

Useofteesandtoomanyelbows

Longhorizontalrunswithouttheproperpitchof1”perfoot
Insufficientmake‐upaircancauseheatedairandcombustiblestoremainintheovenshorteningthelifeofthe
components.

INSTRUCTIONSFORINSTALLINGCOOKINGSTONES 
Thefollowinginstructionsaremodelspecific.

1. Startbyinstallingthecookingstonesusedforthebakingdeck.Thesecookingstonesare2”thick
andmustbeinstalled ROUGHSIDEUP .Pushcookingstonestogethertoeliminateanyspace.
MB42 Placethe(3)12”x36”cookingstonesandthe(1)6”x36”cookingstonesonthesheet
metaloftheovendeck.The6”x36”cookingstonesmustbeplacedontherightside
ofthedeckovenasshownbelow.


MB60
SD660
SD1060
Placethe(5)12”x36”cookingstonesonthesheetmetaloftheovendeckasshown
below.


9

INSTRUCTIONSFORINSTALLINGCOOKINGSTONES
(continued)


MB866
SD866
SD1086
Placethe(5)13”x44”cookingstonesonthesheetmetaloftheovendeckasshown
below.


SD448
SD1048
Placethe(4)12”x36”cookingstonesonthesheetmetaloftheovendeckasshown
below.









