95.1% AFUE

Direct Vent (Sealed Combustion) Forced Air

CMF95 Series Downflow Condensing Gas Furnace

For Installation in:

• ManufacturedHomes

• RecreationalVehicles,ParkModels,&

ManufacturedBuildings

• ModularHomes/Buildings

INSTALLATION INSTRUCTIONS

DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

FIRE OR EXPLOSION HAZARD•Failure to follow safety warnings exactly

could result in serious injury or propertydamage.

• Installationandservicemustbeperformedbyaqualifiedinstaller,serviceagencyorthegassupplier.

•Do not store or use gasoline or otherflammablevaporsandliquidsinthevicinityofthisoranyotherappliance.

WHAT TO DO IF YOU SMELL GAS•Donottrytolightanyappliance.•Donottouchanyelectricalswitch;donot

useanyphoneinyourbuilding.•Leavethebuildingimmediately.• Immediatelycallyourgassupplier froma

neighbor’sphone.Followthegassupplier’sinstructions.

• Ifyoucannotreachyourgassupplier,callthefiredepartment.

WARNING:RISQUED’INCENDIEOUD’EXPLOSION

•Le non-respect des avertissements desécurité pourrait entraîner des blessuresgraves,lamortoudesdommagesmatériels.

•L’installation et l’entretien doivent êtreeffectués par un installateur qualifié, unorganisme de service ou le fournisseur degazstaller,serviceagencyorthegassupplier.

•Nepasentreposerniutiliserdel’essencenid’autres vapeurs ou liquides inflammablesdanslevoisinagedecetappareil,nidetoutautreappareil.

QUEFAIRES’ILYAUNEODEURDEGAZ•Nepastenterd’allumeraucunappareil.•Netoucheràaucuninterrupteurélectrique;

n’utiliseraucuntéléphonedanslebâtiment.•Évacuerl’immeubleimmédiatement.•Appeler immédiatement le fournisseur de

gazenemployant le téléphoned’unvoisin.Respecter à la lettre les instructions dufournisseurdegaz.

•Sipersonnenerépond,appelerleservicedesincendies.

AVERTISSEMENT

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IMPORTANT SAFETY INFORMATION .......................3

REQUIREMENTS & CODES .......................................3

ClearancestoCombustibleMaterials.......................5

CombustionAirQuality.............................................5

HeatingLoad............................................................5

CondensateDisposal...............................................5

COMBUSTION AIR & VENTING REQUIREMENTS ....6

ImportantInformation...............................................7

CategoryIVAppliances............................................7

DirectVentInstallation..............................................7

VentPipeLength&Diameter................................. 7

VentPipeMaterial.................................................. 8

VentPipeInstallation.............................................. 8

OutdoorTerminations-HorizontalVenting............. 8

OutdoorTerminations-VerticalVenting.................. 9

VentFreezingProtection...................................... 10

ExistingInstallations............................................. 10

VentilaireIIIorIVAirQualityPackage................... 10

CIRCULATING AIR REQUIREMENTS ...................... 11

Plenums&AirDucts.............................................. 11

SupplyAirConnections.......................................... 11

Dampers................................................................. 11

UnconditionedSpaces........................................... 11

ClosetInstallations................................................. 11

FurnaceFilter......................................................... 12

AcousticalTreatments............................................ 12

FURNACE INSTALLATION ....................................... 13

GeneralInformation................................................ 13

BeforeYouInstallthisFurnace............................... 13

LocatingtheUnit.................................................... 13

MA-200BaseInstallation....................................... 13

InstallingtheFurnaceonanMA-200Base............ 13

MA-100UniversalBaseInstallation........................ 14

InstallingtheFurnaceonanMA-100Base............. 15

CondensateDrainage............................................ 15

GAS SUPPLY & PIPING ............................................ 16

LeakCheck........................................................... 16

High-AltitudeApplication........................................ 17

ConvertingtoLP/PropaneGas............................ 18

RemovingtheBurnerOrifices.............................. 19

GasPressureVerification....................................... 19

MeasuringtheSupplyGasPressure.................... 19

Lighting&AdjustmentoftheAppliance................ 20

MeasuringtheManifoldPressure......................... 20

RemovingtheManometer/PressureGauge...... 20

CompletingtheConversion.................................... 20

ELECTRICAL WIRING ............................................... 21

LineVoltageWiring................................................ 21

Grounding............................................................... 21

Thermostat/LowVoltageConnections................. 21

HeatAnticipator.................................................... 22

START-UP&ADJUSTMENTS ................................... 23

Pre-StartChecklist................................................. 23

Start-UpProcedures.............................................. 23

Verifying&AdjustingInputRate............................. 23

Verifying&AdjustingTemperatureRise................. 23

VerifyingBurnerOperation..................................... 24

VerifyingOperationoftheSupplyAir LimitSwitch............................................................ 24

OPERATING SEQUENCE ......................................... 25

HeatingCycle......................................................... 25

CoolingCycle......................................................... 25

FanMode............................................................... 25

MAINTENANCE ......................................................... 25

AirFilters................................................................ 26

BlowerCompartment.............................................. 26

CleaningofBurners................................................ 26

VentSystem........................................................... 26

HeatExchanger&BurnerMaintenance................. 26

Lubrication............................................................... 26

TROUBLESHOOTING ............................................... 27

DESCRIPTION OF COMPONENTS .......................... 27

TABLE OF CONTENTS

3

FIGURES & TABLES ................................................. 28

Figure18-FurnaceDimensions.......................... 28

WiringDiagram....................................................... 29

Figure19-CMF95WiringDiagram...................... 29

GasInformation...................................................... 30

Table7-GasFlowRates..................................... 30

Table8-GasPipeCapacities.............................. 30

Table9-HighAltitudeDerationChartfor PropaneGas......................................... 31

Table10-NaturalGasHeatingValues.................31

Table11-HighAltitudeDerationChartfor Nat.Gas-HighHeatingValues........... 31

Table12-HighAltitudeDerationChartfor Nat.Gas-LowHeatingValues............ 31

VentingInformation................................................ 32

Table13-VentTerminationClearances............... 32

Figure20-Horizontal&VerticalVenting.............. 33

INSTALLATION / PERFORMANCE CHECKLIST ..... 36

IMPORTANT SAFETY INFORMATIONPleasereadallinstructionsbeforeservicingthisequipment.Payattentiontoallsafetywarningsandanyotherspecialnotes highlighted in the manual. Safety markings areusedfrequently throughout thismanual todesignateadegreeorlevelofseriousnessandshouldnotbeignored.WARNINGindicatesapotentiallyhazardoussituationthatifnotavoided,couldresult inpersonal injuryordeath.CAUTIONindicatesapotentiallyhazardoussituationthatifnotavoided,mayresultinminorormoderateinjuryorpropertydamage.

REQUIREMENTS & CODES

WARNING:Theinformationlistedbelowmustbefollowedduringtheinstallation,service,andoperationof this furnace. Failure to follow safetyrecommendations could result in possibledamage to the equipment, serious personalinjuryordeath.

• This furnace must be installed in accordance withtheseinstructions,allapplicablelocalbuildingcodesandthecurrentrevisionoftheNationalFuelGasCode(ANSIZ223.1/NFPA54)ortheNaturalGasandPropaneInstallationCode,CAN/CGAB149.1.

• Useonlywithtypeofgasapprovedforthisfurnace.Refertothefurnaceratingplate.

• Installthisfurnaceonlyinalocationandpositionasspecifiedonpage5.

• Provideadequatecombustionandventilationairtothefurnacespaceasspecifiedonpages6-10.

• ProvideadequateclearancesaroundtheventairintaketerminalasspecifiedinFigures1-4(pages9-10).

• Combustionproductsmustbedischargedoutdoors.Connectthisfurnacetoanapprovedventsystemonly,asspecifiedonpages7-10.

• Never test forgas leakswithanopenflame.Useacommercially available soap solution to check allconnections.Seepages16-17.

• Thisfurnaceisdesignedtooperatewithamaximumexternalpressureriseof0.3inchesofwatercolumn.ConsultTable5(page24)andtheratingplateforthepropercirculatingairflowandtemperaturerise.It isimportantthattheductsystembedesignedtoprovidethecorrectflowratesandexternalpressurerise.Animproperlydesignedductsystemcanresultinnuisanceshutdowns,andcomfortornoiseissues.

• Thisfurnacemustnotbeusedfortemporaryheatingofbuildingsorstructuresunderconstruction.

• The Commonwealth of Massachusetts requirescompliancewithregulation248CMR4.00and5.00forinstallationofthrough–the–wallventedgasappliancesasfollows:

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1.For direct-vent appliances, mechanical-vent heatingappliancesordomestichotwaterequipment,wherethebottomoftheventterminalandtheairintakeisinstalledbelowfourfeetabovegradethefollowingrequirementsmustbesatisfied:a.)Acarbonmonoxide(CO)detectorandalarmshallbe

placedoneachfloorlevelwheretherearebedrooms.Thedetector shall complywithNFPA720 (2005Edition)andbemountedinthelivingareaoutsidethebedroom(s).

b.)A(CO)detectorshallbelocatedintheroomthathousestheapplianceorequipmentandshall:•Bepoweredbythesameelectricalcircuitasthe

applianceorequipment.Onlyoneserviceswitchshallpowertheapplianceandthe(CO)detector;

•Havebatteryback-uppower;•MeetANSI/UL2034Standardsandcomplywith

NFPA720(2005Edition);andApprovedandlistedbyaNationallyRecognizedTestingLaboratoryasrecognizedunder527CMR.

c.)AProduct-approvedvent terminalmustbeused,andifapplicable,aproduct-approvedairintakemustbeused.Installationshallbe instrictcompliancewith the manufacturer’s instructions. A copy ofthe installation instructions shall remain with theapplianceorequipmentat the completionof theinstallation.

d.)Ametalorplasticidentificationplateshallbemountedattheexteriorofthebuilding,4feetdirectlyabovethelocationofventterminal.Theplateshallbeofsufficientsize,easilyreadfromadistanceofeightfeetaway,andread“GasVentDirectlyBelow”.

2.For direct-vent appliances, mechanical vent heatingappliancesordomestichotwaterequipmentwherethebottomoftheventterminalandtheairintakeisinstalledabovefourfeetabovegradethefollowingrequirementsmustbesatisfied:a.)A(CO)detectorandalarmshallbeplacedoneach

floorlevelwheretherearebedrooms.ThedetectorshallcomplywithNFPA720(2005Edition)andbemountedinthelivingareaoutsidethebedroom(s).

b.)The(CO)detectorshall:•Belocatedintheroomthathousestheappliance

orequipment;•Behard-wired,batterypoweredorboth.•ShallcomplywithNFPA720(2005Edition).

c.)Aproduct-approvedvent terminalmustbeused,andifapplicable,aproduct-approvedairintakemustbeused.Installationshallbe instrictcompliancewith the manufacturer’s instructions. A copy ofthe installation instructions shall remain with theapplianceorequipmentat the completionof theinstallation.

Theinformationlistedbelowisforreferencepurposesonlyanddoesnotnecessarilyhavejurisdictionoverlocalorstatecodes.Alwaysconsultwithlocalauthoritiesbeforeinstallinganygasappliance.

Combustion & Ventilation Air• US:NationalFuelGasCode(NFGC/NFPA-54),Airfor

CombustionandVentilation• CANADA:NaturalGasandPropaneInstallationCodes

(NSCNGPIC), Venting Systems and Air Supply forAppliances

DuctSystems• USandCANADA:AirConditioningContractorsAssociation

(ACCA)ManualD,SheetMetalandAirConditioning-NationalAssociation(SMACNA),orAmericanSocietyofHeating,Refrigeration,andAirConditioningEngineers(ASHRAE)FundamentalsHandbook

Electrical Connections• US:NationalElectricalCode(NEC)ANSI/NFPA70• CANADA:CanadianElectricalCodeCSAC22.1

GasPiping&GasPipePressureTesting• US:NFGCandNationalPlumbingCodes• CANADA:NSCNGPIC• AmericanNationalStandard(NFPA-54)and/orCAN/CSA

B149forallgas-firedfurnacemodels.

General Installation• US:CurrenteditionoftheNFGCandtheNFPA90B.For

copies,contacttheNationalFireProtectionAssociationInc.,BatterymarchPark,Quincy,MA02269;orAmericanGasAssociation,400N.Capitol,N.W.,WashingtonDC20001orwww.NFPA.org

• CANADA:NSCNGPIC.Foracopy,contactStandardSales,CSA International, 178 Rexdale Boulevard, Etobicoke(Toronto),Ontario,M9W1R3Canada

• Federal Manufactured Home Constructions & SafetyStandard(H.U.D.Title24,Part3280.707[a][2])

• AmericanNationalStandard(ANSI-119.2/NFPA-501C)forallrecreationalvehicleinstallations.

Safety• US:(NFGC)ANSIZ223.1/NFPA54andtheInstallation

Standards, Warm Air Heating and Air ConditioningSystemsANSI/NFPA90B.

• CANADA: CAN/CGA-B149.1 and .2–M00 NationalStandardofCanada.(NSCNGPIC)

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Clearances to Combustible MaterialsThisfurnaceisDesignCertifiedintheU.S.andCanadaby CSA International for the minimum clearances tocombustiblematerials.NOTE:The furnace is listed forinstallationoncombustibleornon-combustibleflooring.However,woodistheonlycombustibleflooringallowedforinstallation.Toobtainfurnacebasemodelnumberandspecificclearanceinformation,refertothefurnaceratingplate,locatedinsideofthefurnacecabinet.

Access for positioning and servicing the unit must beconsidered when locating unit. The need to provideclearance for access to panels or doors may requireclearancedistancesoverandabove the requirements.Allow18inchesminimumclearancefromthefrontoftheunit.However36inchesisstronglyrecommended.SeeTable1forminimumclearancerequirements.

Table1.MinimumClearanceRequirements

INSTALLATION CLEARANCES

CLOSET ALCOVE

Front* 1" 1"Rear 0" 0"Sides 0" 0"Top 6" 6"Ductw/in3ftoffurnace 1/4" 1/4"Vent 0” 0”PlenumWithoutCoilBox 1" 1"PlenumWithCoilBox 0” 0”

NOTES:

AlcoveInstallations-Allow18in.minimumclearancefromfrontofunittonearestwallorpartitionforservicing.

Closetinstallations-Requireareturnairgrillinstalledin the door or a partially louvered door across theopeningforproperaircirculation.Forclearances6”orgreater,theclosetmusthaveanopenfreeareaof235in2minimum.Forspecialclearancesbetween1”-5”,requirementsarealouvereddoorwithaminimumof250in2(1613cm2)freearea.Afullylouveredclosetdoorisstronglyrecommendedforbothinstallationtypes.

LEFTSIDE

FRONT

RIGHTSIDE

REAR

VENT

Theductworkshouldbeappropriatelysizedtothecapacityof the furnace to ensure its proper airflow rating. Forinstallationsabove2,000ft.,thefurnaceshouldhaveasealevelinputratinglargeenoughthatitwillmeettheheatingloadafterderationforaltitude.

CombustionAirQuality

CAUTION:Combustion air must not be drawn from acorrosiveatmosphere.

To maximize heat exchanger life, the combustion airmustbefreeofchemicalsthatcanformcorrosiveacidiccompoundsinthecombustiongases.Therequiredsourceofcombustionairistouseoutdoorair.

Exposuretothefollowingsubstancesinthecombustionairsupplywill result insafetyandperformancerelatedproblems.Thelistbelowcontainsexamplesofchemicalcontainments found in a wide variety of commoncommercialhouseholdproducts:

•Permanentwavesolutions•Chlorinatedwaxesandcleaners•Chlorinebasedswimmingpoolchemicals•Watersofteningchemicals•De-icingsaltsorchemicals•CarbonTetrachloride•Halogentyperefrigerants•Cleaningsolvents(perchloroethylene)•Printinginks,paintremovers,varnishes,etc.•HydrochloricAcid•Cementsandglues•Antistaticfabricsofteners•Masonryacidwashingmaterials

Heating LoadThisfurnaceshouldbesizedtoprovidethedesignheatingloadrequirement.HeatingloadestimatescanbemadeusingapprovedmethodsavailablefromAirConditioningContractorsofAmerica(ManualJ);AmericanSocietyofHeating,Refrigerating,andAirConditioningEngineers;or other approved engineering methods. Excessiveoversizing of the furnace could cause the furnaceand/orventtofailprematurely.

CondensateDisposalThemethodfordisposingofcondensatevariesaccordingtolocalcodes.Consultyourlocalcodeorauthorityhavingjurisdiction. Neutralizer kit P/N 902377 is available forusewith this furnace.Please follow the instructionsprovidedwiththekit.

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COMBUSTION AIR & VENTING REQUIREMENTS

WARNING:CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below foreachapplianceconnectedtotheventingsystembeingplacedintooperationcouldresultincarbonmonoxidepoisoningordeath.Thefollowingstepsshallbefollowedwitheachindividualapplianceconnectedtotheventingsystembeingplacedinoperation,whileallotherappliancesconnectedtotheventingsystemarenotinoperation:

1.Seal any unused openings in the ventingsystem.

2.Inspecttheventingsystemforpropersizeandhorizontalpitch,asrequiredintheNationalFuelGasCode,ANSIZ223.1/NFPA54or theCSAB149.1,NaturalGasandPropaneInstallationCodesandtheseinstructions.Determinethatthere is no blockage or restriction, leakage,corrosionandotherdeficiencieswhichcouldcauseanunsafecondition.

3.Asfaraspractical,closeallbuildingdoorsandwindowsandalldoorsbetweenthespaceinwhichtheappliance(s)connectedtotheventingsystem are located and other spaces of thebuilding.

4.Closefireplacedampers.5.Turn on clothes dryers and any appliance

notconnectedtotheventingsystem.Turnonanyexhaust fans,suchas rangehoodsandbathroomexhausts,sotheyareoperatingatmaximum speed. Do not operate a summerexhaustfan.

6.Follow the lighting instructions. Place theappliance being inspected into operation.Adjustthethermostatsoapplianceisoperatingcontinuously.

7.Test for spillage from draft hood equippedappliances at the draft hood relief openingafter5minutesofmainburneroperation.Usetheflameofamatchorcandle.

8.Ifimproperventingisobservedduringanyoftheabovetests,theventingsystemmustbecorrectedinaccordancewiththeNationalFuelGasCode,ANSIZ223.1/NFPA54and/orCSAB149.1,NaturalGasandPropaneInstallationCodes.

9.Afterithasbeendeterminedthateachapplianceconnectedtotheventingsystemproperlyventswhentestedasoutlinedabove,returndoors,windows,exhaustfans,fireplacedampersandanyothergas-firedburningappliancetotheirpreviousconditionsofuse.

AVERTISSEMENT:RISQUED’EMPOISONNEMENTAU

MONOXYDE DE CARBONED

Le non-respect des consignes suivantes portantsur chacun des appareils raccordés au systèmed’évacuation mis en service pourrait entraînerl’empoisennement au monoxyde de carbone oula mort. Les consignes suivantes doivent êtreobservéespourchaqueappareilraccordéausystèmed’évacuationmisenservicesilesautresappareilsraccordésausystèmenesontpasenservice:

1.Scellertouteouverturenonutiliséedelasystémed’évacuation;

2.S’assurerquelasystémed’évacuationprésentedes dimensions et une pente horizontaleconformes à la norme ANSI Z223.1/NFPA54, intitulée National Fuel Gas Code ou auxcodes d’installation CSA-B149.1, ainsi qu’auxprésentesinstructions.S’assurerquelasystémed’évacuation n’est pas bloquée, restreinte,corrodée,qu’ellenefuitpasetqu’elleneprésenteaucunautredéfautpotentiellementdangereux;

3.Danslamesuredupossible, fermertouteslesportesetfenêtresdubâtiment,ettouteslesportesentrelapièceoùsetrouvel’appareilraccordéàlasystémed’évacuationetlesautrespiècesdubâtiment.

4.Fermerlesregistresdesfoyers;5.Mettre en service les sécheuses et tout autre

appareil qui n’est pas raccordé à la systémed’évacuation.Fairefonctionneràrégimemaximaltoutventilateurd’évacuation,telqueleshottesdecuisinièreetlesventilateursdesallesdebains.Nepasmettreenservicelesventilateursd’été.

6.Respecterlesinstructionsd’allumage.Mettreenservicel’appareilàl’essai.Réglerlethermostatdemanièreàcequel’appareilfonctionnesansinterruption;

7.Vérifier s’il y a débordement à l’orificed’évacuationducoupetiragedesappareilsdotésd’un coupe tirage 5 minutes après l’allumagedu brûleur principal. Utiliser la flamme d’uneallumetteoud’unechandelle.

8.Si l’on constate, au cours de l’un des essaisquiprécèdent,que l’évacuationestdéficiente,corrigerlesystèmed’évacuationconformémentà lanormANSIZ223.1/NFPA54,NationalFuelGasCode,et(ou)auxcodesd’installationCSAB149.1.

9.Après avoir déterminé que tous les appareilsraccordésà lasystémed’évacuationévacuentcorrectement tel que prescrit ci-dessus,rouvrirlesportesetlesfenêtresetremettrelesventilateursd’évacuation,lesregistresdefoyersettoutautreappareilfonctionnantaugazàleurétatdefonctionnementinitial.

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Direct Vent InstallationThiscondensingfurnaceiscertifiedforinstallationasaDirectVent(2-pipe)appliance.DirectVent(2-pipe)furnacesdrawcombustionairdirectlyfromtheoutdoorsandthenventthecombustionproductsbackoutside,isolatingtheentiresystemfromtheindoorspace.Itisimportanttomakesurethatthewholesystemissealedandclearancestocombustiblesaremaintainedregardlessoftheinstallationbeing in a confined or unconfined space.This sectionspecifiesinstallationrequirementsforDirectVent(2-pipe)piping.Table2(page8)containsthelengthofventandcombustionairpipingforthistypeofinstallation.

Provisionsmustbemadeduringtheinstallationofthisfurnacethatprovideanadequatesupplyoffreshairforcombustionandventilation.Thecombustionairfromtheoutsideneedstobeclearofchemicalsthatcancausecorrosion. The inlet pipe should not be placed nearcorrosivechemicalssuchasthoselistedonpage5.

Airopeningsontopofthefurnaceandopeningsinclosetdoorsorwallsmustneverberestricted.Ifthefurnaceisoperatedwithoutadequateairforcombustion,theflameroll-outswitchwillopen,turningoffthegassupplytotheburners.NOTE:Thissafetydeviceisamanuallyresetswitch. DO NOT install jumper wires across theseswitches to defeat their function or reset a switchwithoutidentifyingandcorrectingthefaultcondition.Ifaswitchmustbereplaced,useonlythecorrectsizedpartspecifiedintheReplacementPartsListprovidedonline.

VentPipeLength&DiameterForproperfurnaceoperation,thecombustionairandventpipingmustnotbeexcessivelyrestrictive.

• Theventingsystemshouldbedesignedtohavetheminimumnumberofelbowsorturns.

• Allhorizontalrunsmustslopeupwardsfromthefurnaceat1/4inchminimumperrunningfootofvent.

• Transitiontothefinalventdiametershouldbedoneasclosetothefurnaceoutletaspractical.

• Alwaysusethesamesizeoralargerpipeforcombustionairthatisusedfortheexhaustvent.

Table2(page8)indicatesthemaximumallowablepipelengthforafurnaceofknowninputrate,wheninstalledwithpipingofselecteddiameterandnumberofelbows.Tousethetable,thefurnaceinputrate,thecenterlinelengthandthenumberofelbowsoneachpipemustbeknown.

Whenestimatingthelengthofventruns,considerationmustbemadetotheeffectofelbowsandotherfittings.Thisisconvenientlyhandledusingtheideaof“equivalentlength”.Thismeansthefittingsareassignedalinearlengththataccountsforthepressuredroptheywillcause.Forexample:a3”diameter, longradiuselbowisworththeequivalentof3.5feetoflinearrun.

Theequivalent lenghtsof teesandvariouselbowsarelistedinTable2.Measurethelinearlengthofyourventrunandthenaddintheequivalentlengthofeachfitting.The

ImportantInformation

WARNING:FurnaceinstallationusingmethodsotherthanthosedescribedinthefollowingsectionsmustcomplywiththeNationalFuelGasCode(NFGC)andallapplicablelocalcodes.

WARNING:Upon completion of the furnace installation,carefully inspect theentirefluesystembothinsideandoutsidethefurnacetoassureitisproperlysealed.Leaksinthefluesystemcanresultinseriouspersonalinjuryordeathduetoexposureofflueproducts,includingcarbonmonoxide.

WARNING:This furnace must not be vented with otherappliances, even if that appliance is of thecondensingtype.Thisincludeswaterheatersofanyefficiency.Commonventingcanresultinseverecorrosionofotherappliancesortheirventing and can allow combustion gases toescapethroughsuchappliancesorvents.Donotventthefurnacetoafireplacechimneyorbuildingchase.

• This furnace must be vented in compliance withthe current revision of the National Fuel Gas Code(ANSI-Z223.1/NFPA54). Instructions for determiningthe adequacy of combustion air for an installationcan be found in the current revision of the NFGC(ANSI Z223.1 / NFPA54). Consult local codes forspecial requirements. These requirements are forUSinstallationsasfoundintheNFGC.

• TherequirementsinCanada(B149.1)arestructureddifferently. In Canada, venting shall conform to therequirementsofthecurrent(CAN/CGAB149.1or.2)installationcodes.Consultlocalcodesforspecialrequirements.

CategoryIVAppliancesThisfurnaceisclassifiedasa“CategoryIV”appliance,whichrequiresspecialventingmaterialsandinstallationprocedures.CategoryIVappliancesoperatewithpositiveventpressureandrequiresthoroughlysealedventsystems.Theyalsoproduce liquidcondensate,which is slightlyacidicandcancauseseverecorrosionofordinaryventingmaterials.Furnaceoperationcanbeadverselyaffectedbyrestrictiveventandcombustionairpiping.

8

• Thequalityofoutdoorairmustalsobeconsidered.Besurethatthecombustionairintakeisnotlocatednearasourceofsolventfumesorotherchemicalswhichcancause corrosion of the furnace combustion system.(Seepage5forasamplelistofsubstances).

• Routepipingasdirectaspossiblebetweenthefurnaceand the outdoors. Longer vent runs require largerdiameters.Ventpipingmustbeslopedupwards1/4”perfootinthedirectionfromthefurnacetotheterminal.Thisensuresthatanycondensateflowsbacktothecondensatedisposalsystem.

• When a Direct Vent (2-pipe) system is used, thecombustionair intakeandtheventexhaustmustbelocatedinthesameatmosphericpressurezone.ThismeansbothpipesmustexitthebuildingthroughthesameportionofexteriorwallorroofasshowninFigure20,page33.

• Piping must be mechanically supported so that itsweightdoesnotbearonthefurnace.Pipesupportsmustbeinstalledaminimumofevery5feetalongtheventruntoensurenodisplacementafterinstallation.Supportsmaybeatshorterintervalsifnecessarytoensurethattherearenosaggingsectionsthatcantrapcondensate. It is recommended to install couplingsalongtheventpipe,oneithersideoftheexteriorwall(Figure20).Thesecouplingsmayberequiredbylocalcode.

• Ifbreakableconnectionsarerequiredinthecombustionairinletpipe(ifpresent)andexhaustventpiping,thenstraight neoprene couplings for 2” or 3” piping withhoseclampscanbeused.Thesecouplingscanbeorderedthroughyourlocalfurnacedistributor.Toinstallacoupling:1. Slidetherubbercouplingovertheendofthepipe

thatisattachedtothefurnaceandsecureitwithoneofthehoseclamps.

2. Slidetheotherendoftherubbercouplingontotheotherpipefromthevent.

3. Securethecouplingwiththesecondhoseclamp,ensuringthattheconnectionistightandleakfree.

OutdoorTerminations-HorizontalVenting• Ventandcombustionairintaketerminationsshallbe

installedasshowninFigures1&2(page9)andinaccordancewiththeseinstructions:

• VentterminationclearancesmustbeconsistentwiththeNFGC,ANSI2223.1/NFPA54and/ortheCSAB149.1,NaturalGasandPropaneInstallationCode.Table12(page32)liststhenecessarydistancesfromtheventterminationtowindowsandbuildingairintakes.

• Vent and combustion air intake terminations mustbe located to ensure proper furnace operation andconformance to applicable codes. A vent terminalmustbelocatedat least3feetaboveanyforcedairinletlocatedwithin10feet.Thisdoesnotapplytothecombustionairinletofadirectvent(twopipe)appliance.InCanada,CSAB149.1takesprecedenceovertheseinstructions.SeeTable12(page32).

totallength,includingtheequivalentfittinglengths,mustbelessthanthemaximumlengthspecifiedinthetable.

Condensingfurnacecombustionproductshaveverylittlebuoyancy,soTable2istobeusedwithoutconsiderationofanyverticalriseinthepiping.

VentPipeMaterialVentandcombustionairpipeandfittingsmustbeoneofthefollowingmaterialsinthelistandmustconformtotheindicatedANSI/ASTMstandards.CementmustconformtoASTMStandardD2564forPVCandStandardD2235forABS.PVCprimermustmeetstandardASTMF656.WhenjoiningPVCpipingtoABS,usePVCsolventcement.(SeeprocedurespecifiedinASTMStandardD3138).

In Canada, all plastic vent pipes and fittings includinganycement,cleaners,orprimersmustbecertifiedasasystemtoULCS636.Howeverthisrequirementdoesnotapplytopipinginternaltothefurnace.

Materials StandardsSCHEDULE40PVC............................................... D1785PVC-DWV.............................................................. D2665SDR-21&SDR-26................................................. D2241ABS-DWV.............................................................. D2661SCHEDULE40ABS.............................................. F628FOAM/CELLULARCOREPVC........................... F891

VentPipeInstallation

CAUTION:Combustion air must not be drawn from acorrosiveatmosphere.

Thisfurnacehasbeencertifiedforinstallationwithzeroclearancebetweenventpipingandcombustiblesurfaces.However,itisgoodpracticetoallowspaceforconvenienceininstallationandservice.

• In the absence of local codes, the location of anycombustionairinletrelativetoanyventterminalmustbeatleast8inches.Thisincludesinstallationsinvolvingmorethanonefurnace.

MaximumDirectVent,DualPipeLength(FT.)

CMF95 INPUTS(BTU)

INLET / OUTLET2” Diameter

INLET / OUTLET3” Diameter

45,000 30 60

72,000 30 60

†NOTES:

1. Subtract2.5ft.foreachadditional2inchlongradiuselbow,subtract5ftforeachadditional2”shortradiiouselbow,subtract3.5ft.foreachadditional3inchlongradiuselbow,and7ft.foreachadditional3inchshortradiuselbow.

2. Two45degreeelbowsareequivalenttoone90degreeelbow.

3. Thistableappliesforelevationsfromsealevelto2,000ft.Forhigherelevations,decreasepipelengthsby8%per1,000ftofaltitude.

Table2.VentPipeLengths

9

• Allminimumclearances(Figure2)mustbemaintainedtoprotectbuildingmaterialsfromdegradationbyfluegases.

• For optimal performance, vent the furnace throughawall thatexperiencesthe leastexposuretowinterwinds.

• The vent termination shall be located at least 3 ft.horizontallyfromanyelectricmeter,gasmeter,regulatorandanyreliefequipment.ThesedistancesapplyONLYto U.S. installations. In Canada, CSA B149.1 takesprecedenceovertheseinstructions.

• Donot install thevent terminalsuchthatexhaust isdirected into window wells, stairwells, under decksorintoalcovesorsimilarrecessedareas,anddonotterminateaboveanypublicwalkways.

• Ifventinghorizontally,sidewallventkitsareavailableaccordingtothepipediametersizeoftheinstallation.For3inchpipeusekit#904347.Faceplatekit#902375isalsoavailablefor3inchhorizontalventing.Please followtheinstructionsprovidedwiththekits.

• Concentricventterminationkitsareavailableforusewiththesefurnaces.For3inchpipeusekit#904953.Pleasefollowtheinstructionsprovidedwiththekit.

• WhentheventpipemustexitanexteriorwallclosetothegradeorexpectedsnowlevelwhereitisnotpossibletoobtainclearancesshowninFigure1,arisermaybeprovidedasshowninFigure3.Insulationisrequiredtopreventfreezingofthissectionofpipe.SeeTable3(page10)forventfreezingprotection.

OutdoorTerminations-VerticalVentingTerminationspacingrequirementsfromtheroofandfromeachotherareshowninFigure4.Theroofpenetrationmustbeproperlyflashedandwaterproofedwithaplumbingroofbootorequivalentflashing.Ventandcombustionairpipingmaybeinstalledinanexistingchimneywhichisnotinuseprovidedthat:

• Boththeexhaustventandairintakerunthelengthofthechimney.

• Thetopofthechimneyissealedandweatherproofed.• The termination clearances shown in Figure 4 are

maintained.• Noothergasfiredorfuel-burningequipmentisvented

throughthechimney.

12” min. to maximum

expected snow level

(both pipes)

90° Elbow

Exhaust vent

option B

Exhaust vent

option AMounting kit faceplate

secured to wall with screws

(both pipes)

Combustion

air inlet

Exhaust vent

option C

18” Min.

36” Max.

8” Min.

36” Max.

(all positions)

Figure1.Inlet&ExhaustPipeClearances

Note 2

Mechanical draftvent terminal

Direct ventterminal

50,000 Btuhor less

Forced air inlet

Direct ventterminal - more

than 50,000 Btuh

Mechanical

draft vent

terminal

Mechanical draft vent terminal

Less

than

10 ft.

3 ft.

NOTES:1. All dimensions shown are minimum requirements.2. Exterior vent terminations must be located at least 12” above the maximum expected snow level.

Note 2

4 ft

4 ft

12 in.

12 in.

9 in.

Note 2

Figure 2. Vent Locations

Support

NOTE: Vent Configuration to Provide 12" Minimum height above Snow Level.

1/2" ArmaflexInsulation orEquivalent(if required)

12" AboveMaximumExpected

Snow Level

19" Max.(See Note)

Outside Wall

Figure 3. Alternate Horizontal Vent InstallationFigure4.VerticalVentTermination

Com

bust

ion

Air

Exh

aust

Ven

t

12” Above MaximumExpected Snow Level

(Both pipes)

Elbows on the combustion air inlet must be positioned pointing

away from the exhaust vent.

8" Min.

36" Max.

Plumbing Vent Roof Boot(Both Pipes)

10

ExistingInstallationsWhenanexistingfurnaceisremovedfromaventsystemservingotherappliances,theexistingventsystemmaynotbesizedproperlytoventtheremainingappliances(Forexample:waterheater).Animproperlysizedventingsystemcanresultintheformationofcondensate,leakage,orspillage.Theexistingventsystemshouldbecheckedtomakesure it is incompliancewithNFGCandmustbebroughtintocompliancebeforeinstallingthefurnace.

NOTE: Ifreplacinganexistingfurnace,itispossibleyouwillencounteranexistingplasticventingsystemthatissubjecttoaConsumerProductSafetyCommissionrecall.ThepipesinvolvedintherecallareHighTemperaturePlasticVent(HTPV). IfyourventingsystemcontainsthesepipesDONOTreusethisventingsystem!Thisrecalldoesnotapplytootherplasticventpipes,suchaswhitePVCorCPVC.CheckfordetailsontheCPSCwebsiteorcalltheirtoll-freenumber(800)758-3688.

Ventilaire III or IV Air Quality Package(Accessory)TheVentilaireairqualitypackagesareavailabletomeettheventilationrequirementsasoutlinedinH.U.D.StandardPart3280.103(b)(2).Thesepackagesintroduceoutdoorairintothelivingspaceduringfurnacebloweroperation.TheVentilAireIValsoservestoexhaustmoistand/orhotairfromtheatticspace.SeeFigure5fortypicalinstallation.Completeinstallationinstructionsaresuppliedwitheachairqualitypackage.

VentilAireIII

VentilAireIV

Figure 5. VentilAire III & IV

VentFreezingProtection

CAUTION:Whentheventpipeisexposedtotemperaturesbelow freezing (i.e., when it passes throughunheated spaces, chimneys, etc.) the pipemustbeinsulatedwith1/2inchthickspongerubberinsulation,Armaflex-typeinsulationorequivalent.Insulatingpipeisimportanttoavoidcondensate icing.

• Table3liststhemaximumlengthoffluepipethatcantravelthroughanunconditionedspaceoranexteriorspace. The total vent length must not exceed thelengthsnotedintheTable.ForCanadianinstallations,pleaserefertotheCanadianInstallationCode(CAN/CGA-B149.1or2)and/orlocalcodes.

• Forextremelycoldclimatesorforconditionsofshortfurnace cycles (i.e. set back thermostat conditions)thelast18inchesofventpipecanbereduced.It isacceptabletoreducefrom3”to2-1/2”or,3”to2”ifthetotalventlengthisatleast15feetinlength,andtheventlengthiswithintheparametersspecifiedinTable2 (page 8).The restriction should be counted as 3equivalentfeet.Smallerventpipesarelesssusceptibletofreezing,butmustnotbeexcessivelyrestrictive..

• To prevent debris or creatures from entering thecombustionsystem,aprotectivescreenmaybeinstalledoverthecombustionairintakeopening.Thescreensholesizemustbelargeenoughtopreventairrestriction.

Winter DesignTemperature

MaximumFluePipeLength(FEET)inUnconditioned&ExteriorSpaces

WithoutInsulation WithInsulation*

20 45 70

0 20 70

-20 10 60

*NOTE:Insulationthicknessgreaterthan3/8inch,basedonanRvalueof3.5(ftxFxhr)/(BTUxin.)

Table 3. Vent Protection

11

CIRCULATING AIR REQUIREMENTS

WARNING:Donotallowcombustionproductstoenterthecirculating air supply. Failure to prevent thecirculation of combustion products into thelivingspacecancreatepotentiallyhazardousconditions including carbon monoxidepoisoningthatcouldresultinpersonalinjuryordeath.

Allsupplyductsmustbesecuredtothefurnacewithsheetmetalscrewsandadequatelysealed.Whensupplyairisprovidedthroughthebottomoftheunit,thejointbetweenthefurnaceandtheplenummustbeairtight.

Thesurfacethatthefurnaceismountedonmustprovidesoundphysicalsupportofthefurnacewithnogaps,cracksorsaggingbetweenthefurnaceandthefloororplatform.

Supply air ducts must not be connected toany other heat producing device such as afireplaceinsert,stove,etc.Thismayresultinfire, explosion, carbon monoxide poisoning,personalinjury,orpropertydamage.

Plenums & Air DuctsThisunitisdesignedonlyforusewithabottomsupplyduct and must be installed in accordance with thestandards of the National Fire Protection AssociationStandard for Installation of Air Conditioning Systems(NFPA90A),StandardforInstallationofResidenceTypeWarmAirHeatingandAirConditioningSystems(NFPA90B),andallapplicablelocalcodes.NFPApublicationsare available by writing to: National Fire ProtectionAssociation,BatterymarchPark,Quincy,ME02269orvisitwww.NFPA.orgontheweb.

• DesigntheairductsaccordingtomethodsdescribedbytheAirConditioningContractorsofAmerica(ACCA).

• Air ducts must be aluminum, tin plate, galvanizedsheetsteel,orotherapprovedmaterialsforoutletorreturnairducts.Snap-LockorPittsburgh-Lockseamsarepreferred.Allothertypesofseamsmustbemadetighttopreventleakage.

• It isgoodpractice tosealallconnectionsand jointswith industrial grade sealing tape or liquid sealant.Requirements for sealing ducts vary from region toregion. Consult with local codes for requirementsspecifictoyourarea.

• Gaspipingmustnotruninorthroughanyoftheairductsystem.

SupplyAirConnections• Thesupplyductsystemmustbedesignedsothatthe

staticpressuremeasuredexternaltothefurnacedoesnot exceed the listed static pressure shown on thefurnaceratingplate.Thesupplyairmustbedeliveredtotheheatedspacebyduct(s)securedtothefurnacecasing,runningfulllengthandwithoutinterruption.

• Duct system must be designed so that no supplyregistersarelocatedinductsystemdirectlybelowthefurnace.

DampersAnautomatedshutoffdamperisrequiredwhenthehomeis air conditioned by a self-contained unit. A damperis required toprevent chilledair fromflowingover thefurnaceheatexchanger.Thisdamperisdesignedtofitinthefeederductcavity,directlyunderthefurnace.Forproperinstallation,refertotheinstructionsprovidedwiththedamper.Seereplacementpartslistprovidedonline.

UnconditionedSpacesAllductworkpassingthroughunconditionedspacemustbeproperlyinsulatedtominimizeductlossesandpreventcondensation.Useinsulationwithanoutervaporbarrier.Refertolocalcodesforinsulationmaterialrequirements

Closet Installations

WARNING:Failure to comply with the the followinginstructionsmayresultinfire,asphyxiationorcarbonmonoxidepoisoning.

For proper air circulation, closet installations requirea return air grill installed in the door or side wall thatexchangeswiththelivingareaofthehomeasshowninFigure6.Apartiallylouvereddoormayalsobeusedacrosstheopening.Returnairopeningsshouldnotbelocatedtodrawairdirectlyfromabathroom.Grillesplacedinaside

Figure 6. Closet Installation

12

wallrequirea6”clearancefromthewalltothefurnacesothattheairmayenterthefrontgrilleofthefurnace.Inaddition,allreturnairsystems,includingthefloorandceilingsystems,mustmeetthefollowingconditions:• Thereturnairopening,regardlessofitslocationinthe

closet,mustnotbesmallerthansizespecifiedonunitdatalabel.Iflocatedinthefloor,theopeningmustbeprovidedwithameansofpreventing its inadvertentclosurebyflatobject(s)placedovertheopening.

• Thereturn-airopeningintothecloset,regardlessofitslocation,musthaveanopenfreeareaof200in2(1290cm2)minimum.

• Thecross-sectionalareaofthereturnductsystem(infloororceiling)leadingintotheclosetmustnotbelessthan200in2(1290cm2).

• Thetotalfreeareaoftheopeningsinthefloorortheceilingregistersservingthereturnairductsystemmustnotbenotlessthan300in2(1935cm2).

• Materialslocatedinthereturnductsystemshallhaveaflamespreadclassificationof200orless.

• Noncombustiblepanshavingoneinchupturnedflangesare locatedbeneathopenings inafloor returnductsystem.

• Hollow spaces used as ducts or plenums forenvironmentalairmaycontainmineral-insulatedmetalsheathedcable,aluminumsheathedcable,electricalmetallic tubing, rigid metal conduit, flexible metalconduit(nottoexceed4ft),ormetal-cladcables.Wiringmaterials,fixtures,aretobesuitablefortheexpectedambienttemperaturestowhichtheywillbesubjected.

• Thenegativepressureintheclosetmustnotbelessthanminus0.05incheswatercolumnwiththeclosetdoorclosedand the fanoperatingathighspeed.Areadingbelowminus0.05”indicatesadirtyfilterorarestrictedreturnairsystem.

• For floor returnsystems, themanufacturedhousingmanufacturer or installer shall affix a prominentmarkingonornear theappliancewhere it iseasilyreadwhentheclosetdoorisopen.Themarkingshallread:“CAUTION,HAZARDOFASPHYXIATION.DONOTCOVERORRESTRICTFLOORRETURNAIROPENING.”orequivalent.

• Forclosetinstallationwithlessthan6”frontclearance,butnot less than1”,a louvereddoormustbeusedhavingaminimum200in2(1290cm2)freeareaopeningdirectlyinlinewithopeningsinthefurnacedoor.Afullylouvereddoorhavingtheminimumfreeareaisalsopermittedifthefronttoleranceisnotlessthan4”.

Furnace Filter

WARNING:Never operate the furnace without a filter inplace.Accumulatingdustinthereturnaircanbuild up on internal components, resultinginlossofefficiency,equipmentdamage,andpossiblefire.

• CMF95 furnacesaresuppliedwithasingleairfilterwhenshippedfromthefactory.Accessingthefilterdoesnotrequiretoolsandcanbeeasilyremovedfromtheinsideoftheaccessdoor.Thefilterissecuredtothedoorwitharetainingbracket.Itisrecommendedthatthefilterbecleanedorreplacedmonthly.Newlybuiltorrecentlyrenovatedhomesmayrequiremorefrequentchanginguntiltheconstructiondusthasminimized.

• Replacementfiltersareavailableatmostlocalretailers.Inspectfiltersfrequentlyandreplacewhennecessarywithfilterofsamedimensionalsize.Filtersdesignedtoremovesmallerparticlessuchaspollen,mayrequireadditionalmaintenance.

Acoustical TreatmentsDamping ducts, flexible vibration isolators, or pleatedmedia-stylefiltersonthereturnair inletof thefurnacemaybeusedtoreducethetransmissionofequipmentnoiseeminatingfromthefurnace.Thesetreatmentscanproduceaquieterinstallation,particularlyintheheatedspace.However,theycanincreasethepressuredropintheductsystem.Caremustbetakentomaintainthepropermaximumpressureriseacrossthefurnace,temperatureriseandflowrate.Thismaymeanincreasingtheductsizeand/orreducingtheblowerspeed.ThesetreatmentsmustbeconstructedandinstalledinaccordancewithNFPAandSMACNAconstructionstandards.Consultwithlocalcodesforspecial requirements.Forbestsoundperformance,install all the needed gaskets and grommets aroundpenetrationsintothefurnace,suchasforelectricalwiring.

13

MA-200BaseInstallationTheMA-200baseisdesignedforO.E.M.andreplacementinstallationoftheCMF95seriesfurnace.Thewarmairductsystemshouldbedesignedsotheductstaticpressureexternaltothefurnacedoesnotexceedthestaticpressurelistedonthefurnacedatalabel.Floorcut-outsmustbecarefully located to avoid misalignment of the furnaceandairduct.

1.Usingthebasepan(Figure7)asaguide,locateandmarkthe121/8”x121/8”openingfortheFeederDuct.

2.Cutall4sidesof theFeederDuctopening1” largerthanthedrawncutout.NOTE:Cuttingtheopeningto14-1/8”x14-1/8”willallowtheflangesontheundersideofthebasepantofitintheopening.

3.Drilla1”diameterholeforthegaslinethroughthefloorandbottomboardtotheoutside.NOTE:Fuellinesarenotsuppliedwiththefurnace.Theyshouldbeinstalledtocomplywithallapplicablecodes.

4.Droptransitionduct(Figure8)upsidedownthroughtheflooropeningandcenterthetopofthefeederductin14-1/8”x14-1/8”flooropening.Usingthefeederductasaguide,markandcuta12”x12”openinginthesupplyduct.

5.Insertthefeedertabsintothemainductandbendthemovertightlysothat themainductedgesaretrappedbetweenflangesandtabs.NOTE:Metaltapemaybebeusedtoensureanairtightconnection.

6.Installthebasepanaroundthefeederduct.Securewith2screwsintheholesneartherearofthebasepan.

7.Slitthecornersofthefeederductdowntothetopofthebasepan(Figure9).Whilethetopofthedistributionductispulledupwithonehand,benddowneachsideofthefeederducttightlytothebasewiththeotherhand.Trimthemetaltoallowaoneinchflangeoverthetopofthebasepanandsealthatflangewithmetaltape.NOTE:Ifusinga“V”or“U”-boxcrossoversystem,usemanufacturersinstructionsforinstallationdetails.

InstallingtheFurnaceonanMA-200Base1.Carefullyliftthefurnaceoverthebasepanandsetinto

position.Theflangeonthebackofthefurnaceshouldrestontheinsiderailsofthebase.NOTE:InstallationonaMA-200basemay require removalof the frontportionoftherails.

2.Raisethefrontofthefurnacetoclearthegasketonthebottomofthefurnaceandslidethebackuntiltherearflangedropsintothechannelattherearofthebase.Makesurethefurnaceengagesthetabsontherearflangeofthebase.

3.Opentheaccessdoorandfastenthefrontofthefurnaceand thebase to thefloorwith#8x1/2”sheetmetalscrews.

FURNACE INSTALLATIONNOTE: Sinceallinstallationsaredifferent,thesequenceofthesestepsmaydifferfromtheactualinstallation.Theseinstallationproceduresaresuggestedfortypicalfurnaceinstallations.OnlyqualifiedHVACtechniciansshouldinstallthisfurnace.

GeneralInformationTheCMF95furnaceisdesignedonlyforindoorinstallationsand can be readily connected to the high static ductsystemofahome.Unitsareapprovedforsingle/multistoryresidentialormobile/modular/manufacturedstructuresinfreestanding/closet/alcovedownflowonlyconfigurations.

This appliance will provide many years of safe anddependable comfort, providing it is properly installedandmaintained.Abuse,improperuse,and/orimpropermaintenancecanshorten the lifeof theapplianceandcreateunsafehazards.Pleasereadallinstructionsbeforeinstallingtheunit.

Approved installation, operation, and maintenance ofthis appliance must be in accordance with the listedspecificationscontainedintheseinstructionsandotherdocumentssuppliedwiththefurnaceand/oroptionalairconditioningequipment.Unlessitisnoteddifferentlyinthismanual,onlyusefactoryauthorizedkitsandaccessorieswhenmodifyingthisappliance.Refertolocalauthoritieshavingjurisdictionforfurtherinformation.

BeforeYouInstallthisFurnace√ Thisequipment issecurelypackagedat the timeof

shipmentanduponarrivalshouldbecarefullyinspectedfordamagepriortoinstallingtheequipmentatthejobsite.Claimsfordamage(apparentorconcealed)shouldbefiledimmediatelywiththecarrier.

√ Checktheelectricalsupplyandverifythepowersupplyisadequateforunitoperation.Thesystemmustbewiredandprovidedwithcircuitprotectioninaccordancewithlocalbuildingcodes.Ifthereisanyquestionconcerningthepowersupply,contactthelocalpowercompany.

√ Verify theairdeliveryof the furnace isadequate tohandlethestaticpressuredropofthecoil,filter,andductwork.

LocatingtheUnit• Surveythejobsitetodeterminethebestlocationfor

installing theunit.Consideration shouldbegiven toavailabilityofelectricpower,serviceaccess,andnoise.

• Thedimensionsoftheroomoralcovemustbeabletoaccommodatetheoverallsizeof theunitandtheinstallationclearances inTable1 (page5).Physicaldimensions for this furnaceareshown inFigure17(page28).

• Theunitmustbeleveledatinstallationandattachedtoaproperlyinstalledductsystem.

• Thesurfacethatthefurnaceismountedonmustprovidesoundphysicalsupportoftheunit.

14

MA-100UniversalBaseInstallationTheMA-100baseisdesignedprimarilyforreplacementinstallation of the CMF95 series furnace where themanufactured home duct system may be too small orrestrictiveforproperairflow.TheMA-100baseprovidesapproximately4inchesofadditionalplenumspacebeforethedischargeairenterstheductsystem.SeeFigure10.1.Usingtheuniversalbaseasaguide,locateandmark

the12-1/8”x12-1/8”openingfortheFeederDuct.2.Cutall4sidesoftheFeederDuctopening1”largerthan

thedrawncutout.NOTE:Cuttingtheopeningto14-1/8”x14-1/8”willallowthefourflangesontheundersideofthepaneltofitintotheopening.

3.Drilla1”diameterholeforthegaslinethroughthefloorandbottomboardtotheoutside.NOTE:Fuellinesarenotsuppliedwiththefurnace.Theyshouldbeinstalledtocomplywithallapplicablecodes.

4.Settheuniversalbaseinplace.Droptransitionoroffsetfeederduct(Figure8)upsidedownthroughtheflooropeningandcenterthetopofthefeederductin14-1/8”x14-1/8”flooropening.

5.Usingthefeederductasaguide,markandcuta12”x12”openinginthesupplyduct.Removethebaseandtransition feeder duct; then cut the opening into thedistributionduct.

6.Insert the feeder tabs into the main duct and bendthemoveruntilthemainductedgesaretrappedtightlybetweenflangesandtabs.NOTE:Metaltapemaybeusedtoensureanairtightconnection.

7.Set thebottombasepanelover the feederduct.Slitthecornersofthefeederductdowntothetopofthebase.Whilethetopofthedistributionductispulledupwithonehand,benddowneachsideofthefeederduct

Figure10.MA-100UniversalBase,BottomPanel

12 1/8

Feeder DuctOpening

18 1/4

24 1/2

12 1/8

FRONTCombustion Air

Knock-outs(7-1/4” X 2-1/4”)

Figure7.MA-200BasePan

FRONT

Feeder Duct Opening

FlueLocation

24 1/8

8 3/8

12 1/8

12 1/8

9 1/818 1/4

Figure 8. Transition Duct

Heater Duct Below Joists

Flange

BendOver Tabs

Base

FloorJoists

Slit 4 CornersBend Down 4 Sides

TRANSITIONDUCT

Figure 9. Feeder Duct Installation

Heat Duct Below Joists

Base Feeder Duct

FloorJoists

Cut This Line

Bend OverAlong This Line

1"

15

tightlytothebasewiththeotherhand.Trimthemetaltoallowoneinchflangeoverthetopofthebaseandsealthatflangewithmetaltape.

8.Securethetoppaneltothefloorwith2screwsthroughthefrontflange.NOTE:Ifusinga“V”or“U”-boxcrossoversystem,usemanufacturersinstructionsforinstallationdetails.

InstallingtheFurnaceonanMA-100Base1.Carefullyliftthefurnaceovertheuniversalbasepan

andsetintoposition.Avoiddamagingthefeederductassembly.NOTE: Makesurethefurnaceispositionedagainstthebackendofthebase.

2.Openthefurnacedoorandfastenthefurnacetothebaseusing#8x1/2”sheetmetalscrews.

Condensate Drainage

WARNING:Thecondensateproducedbythefurnacemustbedrained.Donotconnectawatersupplytothedrainagehoseofthefurnace.

Figure 11. Condensate Drainage

J-Trap

Drain Pipe Routedthru Slot in CabinetTo External Drain

Inline DrainAssembly

Collector Box Drain

Collector Box Drain

CAUTION:Donotinstalladditionaltrapsinthecondensatedrain.

• If the furnace is installed in an area wheretemperaturesfallbelowfreezing,specialprecautionsmustbemadeforinsulatingcondensatedrainlinesthatdraintotheoutdoors.Ifcondensatefreezesinthelines,thiswillcauseimproperoperationordamage to the furnace. It is recommended thatalldrainlinesontheoutsideoftheresidencebewrappedwithanindustryapprovedinsulationormaterialallowedbylocalcode.

• Beforeroutingthedraintubeoutofthefurnace,loosenthetubeclampandturnthetubesothepreset90°turnfacestheintendeddirectionofexitfromthecabinet.Donotroutethedraintubewithoutrotatingthetubefirst.Thiswillkinkthetubeandpreventcondensatefromdraining.

• Careshouldbetakentoroutethedrainlineawayfromtheburnerbox.Drainlinesrestingontheburnerboxcanbecomekinkedorcollapsedduetotheheatfromtheburnerbox.

• Thecondensatedrainmayexitthroughtheleftorrightslotsinthebottomofthefurnace(Figure11).Makesuretheflexibledrainhoseisnotkinked.

• Thecondensateshoulddrainfromtheplasticcollectorboxasdropletsorasmallstream. Ifyounotice thefurnacehasoperatedformorethan5minuteswithoutdrainingorthestatuslightsonthecontrolboardindicatesanopenpressureswitch(Table6,page27)followthestepsbelow.1.Removethecollectorboxsofttube(Figure11)and

verifytheexitfromthecollectorboxisclearofanydebrisorobstructions.

2.Replacethistubeandverifythefittotheheaderspoutisairtight.Airwillbedrawnintotheheaderifthisconnectionisnottight.

3.Checkothertubeconnectionsalongthedrainsystem.Verifythatallareairtight.

16

• Allgaspipingmustbeinstalledincompliancewithlocalcodesandutilityregulations.IntheabsenceoflocalcodesthegaslineinstallationmustcomplywiththelatesteditionoftheFederalManufacturedHomeConstructions&SafetyStandard(H.U.D.Title24, Part 3280.707[a][2]), National Fuel Gas Code(ANSIZ223.1/NFPA54)or(CAN/CGAB149.1or.2)Installation Codes.

• Some local regulations require the installationofamanualmainshut-offvalveandgroundjointunionexternaltothefurnaceasshowninFigure12 (page 17).The shut-off valve should be readilyaccessible for service and/or emergency use.Consultthelocalutilityorgassupplierforadditionalrequirementsregardingplacementofthemanualmaingasshut-off.

• Gaspipingmustneverruninorthroughairducts,chimneys,gasvents,orelevatorshafts.

• CompoundsusedonthreadedjointsofgaspipingmustberesistanttotheactionsofLPpropanegas.

• Themaingasvalveandmainpowerdisconnecttothefurnacemustbeproperlylabeledbytheinstallerincaseemergencyshutdownisrequired.

• Flexiblegasconnectorsarenotrecommendedforthistypeoffurnacebutmaybeusedifallowedbylocal jurisdiction. Only new flexible connectorsmaybeused.Donotuseaconnectorwhichhaspreviouslyservicedanothergasappliance.

• Adriplegshouldbeinstalledintheverticalpiperuntotheunitifnotenteringthefurnacethroughthefloor.

Table8(page30)listsgasflowcapacitiesforstandardpipesizesasafunctionoflengthintypicalapplicationsbasedonnominalpressuredropintheline.

Thefurnaceisinstalledwithabottomgasentry.Whenconnectingthegassupply,provideclearancebetweenthegassupplylineandtheentryholeinthefurnacecasingtoavoidunwantednoiseand/ordamagetothefurnace.TypicalgashookupsareshowninFigure12.

LeakCheck

FIRE OR EXPLOSION HAZARD•Failuretofollowsafetywarningsexactlycouldresultinseriousinjuryorpropertydamage.

•Installationandservicemustbeperformedbyaqualifiedinstaller,serviceagencyorthegassupplier.

• Donotstoreorusegasolineorotherflammablevaporsandliquidsinthevicinityofthisoranyotherappliance.

WHAT TO DO IF YOU SMELL GAS•Donottrytolightanyappliance.•Donottouchanyelectricalswitch;donot

useanyphoneinyourbuilding.•Leavethebuildingimmediately.•Immediatelycallyourgassupplierfromaneighbor’sphone.Followthegassupplier’sinstructions.

•Ifyoucannotreachyourgassupplier,callthefiredepartment.

WARNING:

RISQUED’INCENDIEOUD’EXPLOSION• Lenon-respectdesavertissementsdesécurité

pourraitentraînerdesblessuresgraves,lamortou des dommages matériels.

• L’installationetl’entretiendoiventêtreeffectuéspar un installateur qualifié, un organisme deserviceoulefournisseurdegazstaller,serviceagencyorthegassupplier.

• Ne pas entreposer ni utiliser de l’essence nid’autresvapeursouliquidesinflammablesdanslevoisinagedecetappareil,nidetoutautreappareil.

QUEFAIRES’ILYAUNEODEURDEGAZ• Nepastenterd’allumeraucunappareil.• Ne toucher à aucun interrupteur électrique;

n’utiliseraucuntéléphonedanslebâtiment.• Évacuerl’immeubleimmédiatement.• Appelerimmédiatementlefournisseurdegazen

employantletéléphoned’unvoisin.Respecteràlalettrelesinstructionsdufournisseurdegaz.

• Sipersonnenerépond,appeler leservicedesincendies.

AVERTISSEMENT:

GAS SUPPLY & PIPING

FIRE OR EXPLOSION HAZARDFailuretofollowsafetywarningsexactlycouldresultinseriousinjuryorpropertydamage.

Nevertestforgasleakswithanopenflame.Use a commercially available soap solutionmade specifically for the detection of leakstocheckallconnections.Afireorexplosionmayresultcausingpropertydamage,personalinjuryorlossoflife.

WARNING:

17

After the gas piping to the furnace is complete, allconnectionsmustbetestedforgasleaks.Thisincludespipe connections at the main gas valve, emergencyshutoffvalveandflexiblegasconnectors(ifapplicable).The soap and water solution can be applied on eachjointorunionusingasmallpaintbrush.Ifanybubblingisobserved,theconnectionisnotsealedadequatelyandmust be retightened. Repeat the tightening and soapcheckprocessuntilbubblingceases.

IMPORTANTNOTE:Whenpressuretestinggassupplylinesatpressuresgreaterthan1/2psig(14inchW.C.),thegassupplypipingsystemmustbedisconnectedfromthefurnacetopreventdamagetothegascontrolvalve.Ifthetestpressureislessthanorequalto1/2psig(14inchW.C.),closethemanualshut-offvalve.

HighAltitudeApplicationHighaltitudeconversionwith this furnacedependsontheinstallationaltitudeandtheheatingvalueofthegas.Installationofthisfurnaceataltitudesabove2,000feetshallbeinaccordancewithlocalcodes,orintheabsenceoflocalcodes,theNationalFuelGasCode,ANSIZ223/NFPA54orNationalStandardofCanada,NaturalGas&PropaneInstallationCodeCGAB149.1.Pleaseconsultyourlocalcodeauthority.

The installer must indicate the furnace has beenconvertedtohighaltitude.Thismaybeaccomplishedbymarkingtheratingplatewithapermanentmarker.

WARNING:Thereductionofinputratingnecessaryforhighaltitudeinstallationmayonlybeaccomplishedwithfactorysuppliedorifices.Donotattempttodrilloutorificesinthefield.Improperlydrilledorifices may cause fire, explosion, carbonmonoxidepoisoning,personalinjuryordeath.

Thefurnacesareshippedfromthefactorywithorificesandgasregulatorsettingsfornaturalgasoperationatsealevelaltitudes.At2000feet,theNFGCrequiresthatthisappliancebederated4%foreach1000feetofaltitude.Forexample,theinputneedstobereduced8%at2,000feet,12%at3,000feet,etc.Thisderationisinreferencetotheinputrateandgasheatingvalueatsealevel.

Toderatethefurnacerequiresknowingtheheatingvalueofthegasattheinstallationsite.Heatingvaluesatparticularjobsitesvaryfortworeasons:

1.Thechemicalmixtureofthegasvariesacrossregionsandisexpressedasthe“sealevelheatingvalue”.

2.Theheatingvaluevariesbyaltitude.Forthisreason,especially inhighaltitudeareas, the localgasutilityspecifiestheheatingvalueattheresidence’sgasmeterasthe“localvalue”.

RISQUED’INDENDIEOUD’EXPLOSION

Le non-respect des avertissements desécurité pourraitd’entraînerdesblessuresgraves,lamortoudesdommagesmatériels.

Nejamaisutiliseruneflammenueporvérifierlaprésencedes fuitesdegaz.Pour lavérificationde tous les joints, utiliser plutôt une solutionsavonneusecommercialefabriquéespécifiquementpurladétectiondesfuitesdegaz.Unincendieouune explosion peut entraîner des dommagesmatériels,desblessuresoulamort.

AVERTISSEMENT:

4

Gas Valve

Shut-OffValve

Elbows

GroundJoint Union

Figure12.TypicalGasConnections

18

ConvertingtoLP/PropaneGasatAltitudesbetween0&10,000FT.

WARNING:The furnace was shipped from the factoryequippedtooperateonnaturalgas.Conversionto LP / Propane gas must be performed byqualified service personnel using a factorysupplied conversion kit. Failure to use theproperconversionkitcancausefire,explosion,propertydamage,carbonmonoxidepoisoning,personalinjury,ordeath.

ConvertingsinglestagevalvestoLP/Propanerequiresthe replacementof theburnerorificesandflipping theregulatorcaptothesidemarkedLP.TheendfacingupshouldnowreadLP.SeeFigure13.

WARNING:Shutoffthegassupplyatthemanualgasshutoffvalve,beforedisconnectingtheelectricalpower.Afireorexplosionmayresultcausingpropertydamage,personalinjuryorlossoflife.Failuretofollowthesafetywarningsexactlycouldresultinseriousinjury,deathorpropertydamage.

WARNING:Toavoidelectricshock,personalinjury,ordeath,turnoff theelectricpowerat thedisconnectorthemainservicepanelbeforemakinganyelectrical connections.

WARNING:Thereductionofinputratingnecessaryforhighaltitudeinstallationmayonlybeaccomplishedwithfactorysuppliedorifices.Donotattempttodrilloutorificesinthefield.Improperlydrilledorifices may cause fire, explosion, carbonmonoxidepoisoning,personalinjuryordeath.InstallationExample

Elevation:.................................................. 5,000feetTypeofGas:...........................................NaturalGasLocalHeatingValueofGas:..............................750

FromTable10,find750andfollowdownthecolumn,stopatthe5,000feetrow.TheheatingvaluelistedisLOW.Table12willbeusedtodetermineorificesizeandmanifoldpressure.

Foraddedflexibility, twotableshavebeenprovidedfornaturalgasinstallationswithhighorlowheatingvaluesatsealevel.Tables11and12(page31)containthemanifoldpressureandorificesizestouseatvariousaltitudes.Table11(HIGH)isfornaturalgasinstallationswithaheatingvalueofmorethan1,000Btupercubic footandTable12 (LOW) is for less than1,000Btupercubic foot.Todeterminewhichtabletouse:

1.Consult the localutility for the localheatingvalueatyourinstallationsite.

2.FromTable10(page31),findyourlocalheatingvalueas supplied by the utility company. Follow down thecolumnandstopatyouraltitudelevel.

3.IfyoursealevelheatingvalueisHIGH,useTable11orifit’sLOW,useTable12.Seeexamplebelow.

Afterchangingtheorifices,itisrequiredthatyoumeasurethegasinputrate.Thismaybeaccomplishedintheusualway,byclockingthegasmeterandusingthelocalgasheatingvalue.SeeVerifyingandAdjustingtheInputRatesection(page23).

IMPORTANTNOTE:Observetheactionoftheburnerstomakesurethereisnoyellowing,liftingorflashbackoftheflame.

InletPressure

Tap

ManifoldPressure Tap

On / Off Knob

TerminalConnectors

NAT N

AT

L

P

L

P

OROTHER SIDE

OF CAP

Regulator Cap

Figure13.GasValve

19

RemovingTheBurnerOrifices1.Set thethermostat totheOFFposition,or its lowest

temperaturesetting.2.ShutOFFthegassupplyatthemanualshutoffvalve

locatedoutsideoftheappliance.3.Turnoffallelectricalpowertotheappliance.4.Removethedoorfromtheburnerboxbyremoving6

screws.5.TurnthegasvalveON/OFFknobtotheOFFposition.

SeeFigure14.6.Removethewiresfromtheterminalsofthegasvalve.7.Removethesupplygaspipingfromthegasvalveinlet.8.Carefullyremovefourscrewssecuringthegasmanifold

assemblytotheburnerassembly.9.Set the screws aside and remove the gas manifold

assemblyfromtheappliance.10.Carefully remove the burner orifices from the gas

manifoldassembly.11.Read the rating plate affixed to the appliance to

determineitsratedinput(Btu/hr)andthesizeofthefactoryinstalledorifices.

IMPORTANT: Before installing an orifice, checkthesideorfaceoftheorificeforthedrillnumbertoensurethatitistheappropriatesize.

12.InstalltheappropriateLP/Propanegasburnerorificesintothegasmanifoldassembly.NOTE:Theorificesareincludedwiththefurnace. Topreventcrossthreading,handtightentheorificesintothegasmanifoldassemblyuntilsnug,thentightenwithawrench.

13.UnscrewthegasvalvepressureregulatorcapmarkedNAT.InvertthecapsoLPfacesup.Reinstallthecapandtightenuntilsnug.MakesureLPisvisibleafterconversion.

GasPressureVerificationMeasuringtheSupplyGasPressure1.TurnOFFthegassupplyatthemanualvalvelocated

ontheoutsideoftheunit.2.Usinga3/16”Allenwrench,removetheplugfromthe

inletpressuretap(INLETsideofgasvalve).SeeFigure13(page18).

3.Installan1/8”NPTpipethreadfitting,thatiscompatiblewithaManometerorsimilarpressuregauge.

4.ConnecttheManometerorpressuregaugetotheInletPressureTap.

5.TurnONthemaingassupplyatthemanualvalve.6.Checkandadjust the incominggas linepressure to

11.0-14.0inchesWaterColumnforLP/Propanegas.7.TurnOFFthegassupplyatthemanualvalve.8.DisconnecttheManometerorpressuregauge.9.RemovetheNPTfittingandreinstalltheINLETpressure

tapplug.Handtightentheplugfirsttopreventcross-threading.Tightenwith3/16Allenwrench.

Figure14.OrificeRemoval

Burner BoxOrifice(X4)

Gas Valve

Gas Manifold

Burner BoxDoor

(X4)

(X6)

WARNING:DonotuseTeflontapeorpipejointcompoundontheorificethreads.Theholeintheorificemaybecomeblockedandcausefire,explosion,propertydamage,carbonmonoxidepoisoning,personalinjury,ordeath.

14.Reinstall the gas manifold assembly to the burnerassemblywiththe4screws,thatwereremovedearlier.NOTE:It isimportantthatthecenteroftheorificesarealignedwiththecenteroftheburners.

15.Reinstalltheburnerboxdoorwiththe6screwsthatwereremovedearlierinstep4.

16.Reconnectthegaspipingtothegasvalveinlet.17.Reconnectthewirestothegasvalveterminals.

20

Lighting&AdjustmentoftheAppliance

WARNING:FIRE OR EXPLOSION HAZARD

Failuretofollowsafetywarningsexactlycouldresultinseriousinjuryorpropertydamage.

Nevertestforgasleakswithanopenflame.Usea commercially available soap solution madespecificallyforthedetectionofleakstocheckallconnections.Afireorexplosionmayresultcausing property damage, personal injury orlossoflife.

1.TurnONthemanualgasvalve,locatedontheoutsideoftheunittotheONposition.

2.Checkallgasconnectionsforleakswithasoapandwatersolution. If thesolutionbubbles there isagasleakwhichmustbecorrected.

3.Turnontheelectricalpowertotheappliance.4.TurnthegasvalveON/OFFknobtotheONposition.

SeeFigure13(page18).5.Setthethermostattoapointaboveroomtemperature

tobegintheheatingcycleofthefurnace.6.Checkthatthefurnaceignitesandoperatesproperly.

Refertotheinstallationinstructionsprovidedwiththeunitforthenormaloperatingsequence.

7.Afterignition,visuallyinspecttheburnerassemblytoensurethattheflameisdrawndirectlyintothecenteroftheheatexchangertube.Inaproperlyadjustedburnerassembly,theflamecolorshouldbebluewithsomelightyellowstreaksneartheouterportionsoftheflame.

NOTE:Theignitermaynotignitethegasuntilallairisbledfromthegasline.Iftheignitioncontrollocksout,turnthethermostattoitslowestsettingandwaitoneminutethenturnthethermostattoapointaboveroomtemperatureandtheigniterwilltryagaintoignitethemainburners.This process may have to be repeated several timesbefore theburnerswill ignite.After theburnersare lit,checkallgasconnectionsforleaksagainwiththesoapandwatersolution.

MeasuringtheManifoldPressureThemanifoldpressuremustbemeasuredbyinstallingapressuregauge(Manometer,MagnehelicMeter,etc.)totheoutletendofthegasvalveasfollows:1.Turnoffallelectricalpowertotheappliance.2.ShutOFFthegassupplyatthemanualshutoffvalve

locatedoutsideoftheappliance.3.Using a 3/16” Allen wrench, remove the manifold

pressuretappluglocatedontheoutletsideofthegasvalve.SeeFigure13(page18).

4.Installan1/8”NPTpipethreadfitting,thatiscompatiblewithaManometerorsimilarpressuregauge.

5.Connect the Manometer or pressure gauge to themanifoldpressuretap.

6.Settheroomthermostataboveroomtemperaturetostartthefurnace.

7.Allow the furnace tooperate for3minutesand thencheckthemanifoldpressure.ComparethemeasuredvaluewiththevalueshowninTable11(page31).

RemovingtheManometer/PressureGaugeAfter themanifoldpressure isverified, theManometerorpressuregaugemustberemovedfromthegasvalve.

1.Turnthethermostattoitslowestsetting.2.TurnOFFthemaingassupplytotheunitatthemanual

shut-offvalve,whichislocatedoutsideoftheunit.3.TurnOFFalloftheelectricalpowersuppliestotheunit.4.Removethepressuregaugeadapterfromthegasvalve

andreplaceitwiththe1/8”NPTmanifoldpressureplugthathadbeenremovedearlier.NOTE:Makesuretheplugistightandnotcross-threaded.

5.TurnONtheelectricalpowertotheunit.6.TurnONthemaingassupplytotheunitatthemanual

shut-offvalve.

CompletingtheConversion

WARNING:Donotalterorremovetheoriginalratingplatefromthefurnace.

1.AffixtheLPlabelfromtheorificepackagetotheratingplate.

2.Reinstalltheappliancedoor.3.Runtheappliancethrough3completecyclestoassure

properoperation.

21

Line Voltage Wiring• Electricalconnectionsmustbeincompliancewithall

applicablelocalcodeswiththecurrentrevisionoftheNationalElectricCode(ANSI/NFPA70).

• ForCanadianinstallationstheelectricalconnectionsandgroundingshallcomplywiththecurrentCanadianElectricalCode(CSAC22.1and/orlocalcodes).

• Itisrecommendedthatthelinevoltage(115VAC)tothefurnacebesuppliedfromadedicatedbranchcircuitcontaining thecorrect fuseorcircuitbreaker for thefurnaceaslistedinTable4(page22).

ELECTRICALSHOCK,FIREOREXPLOSIONHAZARD

Failuretofollowsafetywarningsexactlycouldresultinseriousinjuryorpropertydamage.

Improperservicingcouldresultindangerousoperation, serious injury, death or propertydamage.

• Before servicing, disconnect all electricalpowertofurnace.

• Whenservicingcontrols,labelallwirespriortodisconnecting.Reconnectwirescorrectly.

• Verifyproperoperationafterservicing.”

WARNING:

RISQUEDECHOCÉLECTRIQUE,D’INCENDIEOUD’EXPLOSION

Le non-respect des avertissements de sécuritépourraitentraînerunfonctionnementdangereuxdel’appareil,desblessuresgraves,lamortoudesdommages matériels.

Un entretein incorrect pourrait entraîner unfonctionnementdangereuxdel’appareil,desblessuresgraves,lamortoudesdommagesmatériels

• Couper toute alimentation électrique augénérateurd’airchaudavantdeprodéderauxtravauxd’entretein.

• Aumomentdel’entretiendescommandes,étiqueteztouslesfilsavantdelesdébrancher.S’assurerdelesraccordercorrectement.

• S’assurer que l’appareil fonctionneadéquatementaprésl’entretien.

AVERTISSEMENT:

ELECTRICAL WIRING IMPORTANT NOTES:If replacinganyof theoriginalwiressuppliedwiththe furnace, the replacement wire must be copperwiringandhaveatemperatureratingofatleast105°F(40°C).Forelectricalspecifications,refertothefurnacenameplateorTable4.

An electrical disconnect must be installed readilyaccessiblefromandlocatedwithinsightofthefurnace.SeeFigure18(page29)orthewiringdiagramlabelinsideofthecontroldoor.Anyotherwiringmethodsmustbeacceptabletoauthorityhavingjurisdiction.

Proper linevoltagepolaritymustbemaintained inorder for the control system to operate correctly.VerifytheincomingneutrallineisconnectedtothewhitewireandtheincomingHOTlineisconnectedtotheblackwire.ThefurnacewillnotoperateunlessthepolarityandgroundareproperlyconnectedasshowninFigure18.

Grounding

WARNING:Tominimizepersonalinjury,thefurnacecabinetmust have an uninterrupted or unbrokenelectrical ground. The controls used in thisfurnace require an earth ground to operateproperly.Acceptablemethodsincludeelectricalwireorconduitapprovedforgroundservice.Donotusegaspipingasanelectricalground!

Thermostat/LowVoltageConnections• Thefurnaceisdesignedtobecontrolledbya24VAC

thermostat.Thethermostat’swiringmustcomplywiththecurrentprovisionsoftheNEC(ANSI/NFPA70)andwithapplicablelocalcodeshavingjurisdiction.

• The thermostat must be installed according to theinstructionssuppliedbythethermostatmanufacturer.Lowvoltageconnections(24VAC)fromthethermostatarewiredtotheterminalstripontheintegratedcontrolinthefurnace.Figure15(page22)containstheproperconnectionsforheatingonly(two-wire)andheating/cooling (four-wire) applications. Recommendedminimumwiregaugefor thermostatwiring isshowninTable4(page22).

• The thermostat should be mounted about 5 feetabovetheflooronaninsidewall.DONOTinstallthethermostat onanoutsidewall or anyother locationwhereitsoperationmaybeadverselyaffectedbyradiantheatfromfireplaces,sunlight,orlightingfixtures,andconvectiveheatfromwarmairregistersorelectricalappliances. Refer to the thermostat manufacturer’sinstructionsheetfordetailedmountinginformation.

22

HeatAnticipatorSet the heat anticipator according to the instructionssuppliedbythethermostatmanufacturer.Todeterminetheheatanticipatorsetting:1.Addthecurrentdrawofthesystemcomponents;or2.MeasurethecurrentflowonthethermostatR-Wcircuit

afterthecirculatingblowermotorhasstarted.

Figure 16. Line Voltage Field Wiring

Field Supplied Disconnect w/in Sight of Furnace

Field SuppliedPanel Connector

Field SuppliedFused Service

Panel

Black (Hot)

White (Neutral)

Green or Bare(Ground)

Black

White

Black

White

Black

White

Field Line Voltage Wiring

Factory Line Voltage Wiring

Ground Ground

Junction Box (may be int. or ext. to the furnace). Theseconnections can be made in the field supplied disconnect

at the furnace. NOTE: Connections made within the furnaceburner compartment do not require a junction box.

Ground

FurnaceModel

NumberCMF95-

FurnaceInput(Btuh)

CabinetWidth(in.)

NominalElectrical

Supply

MaximumOperating

Voltage

MinimumOperating

Voltage

MaximumFurnaceAmperes

MinimumWire

Gauge

MaximumFuse or CircuitBreakerAmps*

MinimumCircuit

Ampacity1

MamimumOvercurrentProtection2

045 45,000 18 115-60-1 127 103 11.0 14 20 13.1 21.7

072 72,000 18 115-60-1 127 103 10.4 14 20 12.4 20.4

NOTE:Minimumwiregaugeandmaximumfuse/circuitbreakeramperagearebasedonMCA1andMOP2calculations.Thisfurnaceisapprovedforinstallationwitha15or20ampfuse/circuitbreakerhoweverwiringsizingmustadheretocurrentversionoftheNECand/orapplicablelocalcodesdependingupontheovercurrentprotection.

ThermostatWireGaugeRecommendedThermostatWireLength

2-wire-Heating 4or5wire-Cooling

24 55ft. 25ft.

22 90ft. 45ft.

20 140ft. 70ft.

18 225ft. 110ft.

* Time-delayfusesorcircuitbreakersarerequired.

Table4.WireLength&VoltageSpecifications

Figure15.LowVoltageField,Four-wireHeating/CoolingApplications

RC

YG

W

STATUS

FLAMEGREENRED

180C

OO

LH

EA

T

1209060

YELLOW

BLOWEROFF

DELAY

LO

WML

MH

HIG

HE

ACL1

XF

MR

HU

M

CO

M SPEEDSELECT

3 AMPFUSE

24V

5

NE

UT

RA

LS

ROOMTHERMOSTAT

A/C CONDENSING UNIT

CONDENSING UNITCONTROL BOX

EXPANSION PORT(MOTOR CONNECTION)

FIELD WIRINGLOW VOLTAGECONNECTION

RCYGW

NOTE: The “Y” terminal on the control board must be connected to the thermostat for proper cooling mode operation.

ConnectR & W

For Heating Only

2

ELECTRONIC AIR CLEANER

MOTOR SPEED TAPS (NOT USED)

HUMIDIFIER TAP

NEUTRAL LEADS

6 3

4 1

789

5 26 3

4 1

FAN

23

START-UP&ADJUSTMENTSPre-StartCheckList√ Verifythepolarityoftheconnectionsarecorrect,the

linevoltagepowerleadsaresecurelyconnectedandthefurnaceisproperlygrounded.

√ Verifythethermostatwires(R,W,Y,&G)aresecurelyconnectedtothecorrectleadsontheterminalstripofthecircuitboard.

√ Verifythegaslineservicepressuredoesnotexceed10.0inchesofW.C.,andisnotlessthan4.5inchesW.C.fornaturalgas.ForLPgasthelineservicepressuremustnotexceed14in.W.C.,andmustnotbelessthan11.0in.W.C.

√ Verify the roll-out and vent switches are closed. Ifnecessary,presstheredbuttontoresetaswitch.DO NOTinstallajumperwireacrossaswitchtodefeatitsfunction.Ifaswitchreopensonstartup,DONOTresettheswitchwithoutidentifyingandcorrectingthefaultcondition.

√ Verify the blower door is in place, closing the doorswitchinthelinevoltagecircuit.

√ Verifythegaslinehasbeenpurgedandallconnectionsareleakfree.

Start-upProceduresDonotperformthesestepsuntilallofthechecksinthepreviousstepshavebeencompleted:1.Setthethermostattothelowestsetting.2.Turnoffallelectricalpowertothefurnace.3.FollowtheOperatingInstructionsonthelabelattached

tothefurnace.4.Setthethermostataboveroomtemperatureandverify

theOperatingSequence(page25).5.After5minutesofoperation,setthethermostatbelow

roomtemperatureandverifysteps9-10oftheOperatingSequence.

Verifying&AdjustingInputRateThe input ratemustbeverified foreach installation topreventover-firingofthefurnace.NOTE:Theinputratemustnotexceedtherateshownonthefurnaceratingplate.Ataltitudesabove2,000feet,itmustnotexceedthatontheratingplateless4%foreach1,000feet.Todeterminetheexactinputrate,performthefollowingprocedures:

1.Shutoffallothergasfiredappliances.2.Startthefurnaceandrunitforatleast3minutes.3.Measure the time (in seconds) required for the gas

metertocompleteonerevolution.4.Convertthetimeperrevolutiontocubicfeetofgasper

hourusingTable7(page30).5.Multiplythegasflowrateincubicftperhrbytheheating

valueofthegasinBtupercubicfttoobtaintheinputrateinBtuh.Seeexample.

6.Themanifoldpressuremustbesettotheappropriatevalueforeachinstallationbyaqualifiedinstaller,serviceagencyorthegassupplier.

WARNING:Donotattempttodrillthegasorifices.Useonlyfactory supplied orifices. Improperly drilledorifices may cause fire, explosion, carbonmonoxidepoisoning,personalinjuryordeath.

a.)Obtain themanifoldpressuresettingrequired forthisinstallationbyreferringtoTable11forPropaneorTable12(page31)forNaturalGas.

b.)Remove the regulator capscrew from the INLETsideoftheregulator.SeeFigure30,page30-gasvalvepictureinLPsection.

c.)Slowlyturntheadjustmentscrewinsidetheregulatorto obtain the appropriate manifold pressure.NOTE:Turningthescrewclockwiseincreasesthepressureandturningthescrewcounter-clockwisedecreases the pressure. To prevent backing thescrewallthewayoutfromthevalve,turnthescrewslowly.

d.)Replaceandtightentheregulatorcapscrewovertheadjustmentscrew.

Verifying&AdjustingTemperatureRiseAfterinstallationofthefurnace,confirmthetemperatureriseofthefurnaceiswithinthelimitsspecifiedontheratingplate.Any temperatureriseoutside thespecified limitscouldresultinprematurefailureoftheheatexchanger.

For typical duct systems, the temperature rise will fallwithin the limits specified on the rating plate with theblowerspeedatthefactoryrecommendedsetting.Ifthemeasuredtemperatureriseisoutsidethespecifiedlimits,itmaybenecessarytochangethespeedoftheblower.NOTE: Lowering the blower speed will increase thetemperatureriseandahigherblowerspeedwilldecreasethetemperaturerise.

Thefurnaceisequippedwithamulti-speedmotor.Heatingandcoolingspeedselectionismadebymovingtheswitchontheintegratedcontrollocatedinthefurnace.

1.Placethermometersinthereturnandsupplyairstreamasclosetothefurnaceaspossible.IMPORTANT:Thethermometeronthesupplyairsidemustbeshieldedfromdirect radiation fromtheheatexchanger toavoidfalsereadings.

2.Consult Table 5 (page 24) and the rating plate forthe proper circulating air flow and temperature rise.

Example:• Timefor1revolutionofagasmeterwitha1cubic

ftdial=40seconds.• FromTable7read90cubicftgasperhr.• Localheatingvalueofthegas(obtainedfromgas

supplier)=1,040Btupercubicft.• Inputrate=1,040x90=93,600Btuh.

24

Table5.MaximumAirflow&TemperatureRises(°F)

MODEL NUMBER& HEATING INPUT

(BTUH)

MOTORSPEED

EXTERNAL STATIC PRESSURE (INCHES WATER COLUMN)

0.1 0.2 0.3 0.4 0.5

CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE

CMF9504545,000

HIGH* 1380 29 1335 30 1290 31 1230 32 1175 34

MEDHIGH 1350 29 1295 31 1240 32 1190 33 1135 35

MEDLOW 1100 36 1055 38 1020 39 975 41 920 43

LOW** 1000 40 970 41 935 42 900 44 860 46

CMF9507272,000

HIGH* 1485 43 1440 44 1390 46 1340 47 1290 49

MEDHIGH** 1263 50 1235 51 1205 53 1160 55 1115 57

MEDLOW 1130 56 1100 58 1175 54 1045 61 1000 63

LOW 880 72 846 75 830 76 805 79 770 82

NOTES:

*FactorySetCoolingSpeed.

**FactorySetHeatingSpeed.

1.Temperaturerises(°F)inthetableareapproximate.Actualtemperaturerisesmayvary.

2.Temperaturerisesshadedingrayareforreferenceonly.Theseconditionsarenotrecommended.

3.Airflowperformanceiswithafilter.

NOTE: This furnace is designed to operate with amaximumexternalpressureriseof0.3inchesofwatercolumn.Itisimportantthattheductsystembedesignedtoprovidethecorrectflowratesandexternalpressurerise.An improperlydesignedductsystemcanresultinnuisanceshutdowns,andcomfortornoiseissues.

3.Adjustall registersandductdampers to thedesiredpositionandrunthefurnacefor10to15minutesbeforetakinganytemperaturereadings.Thetemperatureriseis the difference between the supply and return airtemperatures.

VerifyingBurnerOperation

CAUTION:Thedoorovertheburnersmayonlybeopenforinspectionpurposesonly.Thedoormustbeinstalledduringunattendedoperation.

1.Setthethermostataboveroomtemperatureandobservetheignitionsequence.NOTE: Theburnerflameshouldcarry over immediately between all burners withoutliftingoff,curling,orfloating.Theflamesshouldbeblue,withoutyellowtips.

2.Aftervalidatingtheflame,changethermostatsettingtobelowroomtemperature.

3.Verifytheburnerflameiscompletelyextinguished.

4.Replacetheburnercompartmentdoor.

VerifyingOperationoftheSupplyAirLimitSwitch

Note: Aproperlyfunctioninglimitswitchshouldturnoffthegasvalvewhenthereturnisblocked(timedependsonhowwellthereturnairisblocked).Thecirculatingairandcombustionblowersshouldcontinuetorunwhenthelimitswitchopens.

1.Verifytheblowerdoorissecurelymountedinplaceandthatthereispowertothefurnace.

2.Blockthereturnairflowtothefurnacebyinstallingaclose-offplateinplaceoforupstreamofthefilter(s).

3.SetthethermostataboveroomtemperatureandobservetheOperatingSequence.

4.Removetheclose-offimmediatelyafterthelimitswitchopens.Ifthefurnacecontinuestooperatewithnoreturnair,setthethermostatbelowroomtemperature,shutoffpowertothefurnace,andreplacethelimitswitch.

25

ELECTRICALSHOCK,FIREOREXPLOSIONHAZARD

Failuretofollowsafetywarningsexactlycouldresultinseriousinjuryorpropertydamage.

Improperservicingcouldresultindangerousoperation, serious injury, death or propertydamage.

• Before servicing, disconnect all electricalpowertofurnace.

• Whenservicingcontrols,labelallwirespriortodisconnecting.Reconnectwirescorrectly.

• Verifyproperoperationafterservicing.”

WARNING:

RISQUEDECHOCÉLECTRIQUE,D’INCENDIEOUD’EXPLOSION

Le non-respect des avertissements de sécuritépourraitentraînerunfonctionnementdangereuxde l’appareil,desblessuresgraves, lamortoudes dommages matériels.

Unentretein incorrectpourraitentraînerunfonctionnementdangereuxdel’appareil,desblessuresgraves,lamortoudesdommagesmatériels

• Couper toute alimentation électrique augénérateurd’airchaudavantdeprodéderauxtravauxd’entretein.

• Aumomentdel’entretiendescommandes,étiquetez tous les fils avant de lesdébrancher. S’assurer de les raccordercorrectement.

• S’assurer que l’appareil fonctionneadéquatementaprésl’entretien.

AVERTISSEMENT:

OPERATING SEQUENCETheoperatingsequences for theheating,cooling,andfanmodesaredescribedbelow.Refer to thefieldandfurnacewiringdiagrams:(Figures15&16,page31)and(Figure18page28).

HeatingCycle1.The thermostat calls for heat by energizing the W

terminalwith24VAC.2.Thecontrolverifiesthepressureswitchisopen.3.Ifthepressureswitchisopen,thecontrolenergizesthe

inducerandwaitsforthepressureswitchtoclose.Thepressureswitchmustclosewithin10seconds.

4.Thecontrolrunstheinducerfora30secondpre-purge.5.The control energizes the Hot Surface Igniter (HSI)

outputfortheappropriatewarm-uptimelimit.6.Thecontrolenergizesthemaingasvalvefor3seconds.7.Iftheflameprovedandignitesthegas,thecontrolde-

energizestheHSI.Thegasvalveandinducerremainsenergized.Thecontrolgoestoblowerondelay.

8.Ifflameispresent,thecontrolenergizestheblowerontheselectedHEATspeed30secondsafterthegasvalveopened.Thegasvalveandinducerremainenergized.

9.Whenthethermostatdemandforheatissatisfied,thecontrolde-energizesthegasvalve.TheInduceroutputremainsonfora30secondpost-purgeperiod.

10.Blower off timing begins when the thermostat issatisfied.ThecontrolwilloperateattheselectedHEATspeedof60,90,120,or180seconds.Ifthebloweroffdelay jumper isnotpresent, the fanshouldstilloperatefor120secondsattheselectedHEATspeed.TheIndoorblowermotorisde-energizedafterabloweroffdelayasselectedbythemovablejumper.

CoolingCycle1.The thermostatcalls forcoolingbyenergizing theY

terminalwith24VAC.2.Thecontrolenergizestheblowerincoolingspeedand

sends24VACtothecontactorinthecondensingunit3.Whenthethermostatremovesthecallforcooling,the

contactorintheoutdoorcondensingunitisde-energizedandthecontrolcontinuestorunthefanforaperiodof60seconds.

Fan Mode• When the thermostat energizes the G terminal for

continuousfan(withoutcallingforheatorcooling),theindoorfanisenergizedontheselectedFANspeed.

• Ifacallforcoolingoccursduringcontinuousfan,theblowerwillswitchovertotheselectedCOOLspeed.

• If the W terminal receives a call for heat duringcontinuousfan,theblowerwilldeenergize.

• Acallforfanisignoredwhileinlockout.

MAINTENANCEPropermaintenanceismostimportanttoachievethebestperformancefromafurnace.Followtheseinstructionsforyearsofsafe,troublefreeoperation.

• Thesemaintenanceinstructionsareprimarilyintendedtoassistqualifiedtechniciansexperiencedinthepropermaintenanceandoperationofthisappliance.

• Alwaysclosethedooronthefurnaceafterservicingorcleaning/changingthefilters.Donotoperatethefurnacewithoutthedoorclosed.

• Verify the thermostat is properly installed and willnotbeaffectedbydraftsorheatfromlampsorotherappliances.

26

• To achieve the best performance and minimizeequipment failure it is recommended that a yearlymaintenancecheckupbeperformed.Ataminimum,thischeckshouldincludethefollowingitems:

Air Filter(s)

WARNING:Never operate the furnace without a filter inplace.Dustand lintcanbuildupon internalcomponents, resulting in loss of efficiency,equipmentdamage,andpossiblefire.

Anairfilterissuppliedwiththefurnaceasshippedfromthefactory.Filtersshouldbechangedorcleanedmonthlyduringtheheatingseason.Newlybuiltorrenovatedhomesmayrequiremorefrequentchanginguntiltheconstructiondusthasminimized.

Filters designed to remove smaller particles such aspollen,mayrequireadditionalmaintenance.

BlowerCompartmentDirt and lint can create excessive loads on the motorresultinginhigherthannormaloperatingtemperaturesandshortenedservice life. It is recommended that theblowercompartmentbecleanedofdirtor lintthatmayhaveaccumulatedinthecompartmentorontheblowerandmotoraspartoftheannualinspection.

CleaningofBurnersIf theburnersmustbecleaned,followsteps1-12.SeeFigure17(page27)forcomponentlocation.1.Shutoffgassupplytothefurnaceatthemeterorata

manualvalveinthesupplypiping.2.Turnoffallpowertothefurnaceandsetthethermostat

toit’slowestsetting.3.Turn the gas control knob to the OFF position. See

Figure13(page18).4.Disconnectthewiresfromthegasvalve,igniter,flame

sensor,andflamerolloutswitch.

CAUTION:To prevent damage to the unit or internalcomponents, it is recommended that twowrenchesbeusedwhenlooseningortighteningnuts.Donotovertighten!

5.Usingtwowrenches,separatetheground-jointunioninthegassupplypipingatthefurnace.

6.Remove the piping between the gas valve and theground-jointunion.(Ifapplicable).

7.Removetheburnerboxdoor(6screws).8.Remove4screwssecuringthemanifoldassemblyto

theburnerbox.9.Remove 4 screws from the corners of the box and

carefullyremovetheburnerassemblyfromthefurnace. IMPORTANT: DO NOT damage the igniter whileremovingtheburnerassembly.

10.Inspecttheburnersforaccumulateddustordebris.If necessary carefully clean them with a soft wirebrushandavacuumcleaner.IMPORTANT:DO NOT damage the igniter while cleaning the burnerassembly.

11.Replaceallthepartsinreverseorderthattheywereremoved.

12.Followthelightinginstructionsfoundonthefurnacedoortoreturnthefurnacetooperation.Verifyproperoperationafterservicing.

VentSystem

WARNING:Holesintheventpipeorheatexchangercancausecombustionproductstoenterthehome.Replacetheventpipeorheatexchangerifleaksare found. Failure to prevent the circulationofcombustionproductsintothelivingspacecan create potentially hazardous conditionsincluding carbon monoxide poisoning thatcouldresultinpersonalinjuryordeath.

Checktheinletpipe(ifapplicable)andoutletpipetoensurethey are not blocked by debris. Any damaged sectionofventpipemustbe replaced,andanyobstructionorblockagemustberemovedpriortooperatingthefurnace.

HeatExchanger&BurnerMaintenanceThefurnaceshouldoperateformanyyearswithoutsootbuildupinthefluepassageways,however,theflue,ventsystem,andburnersshouldbeinspectedandcleaned(ifrequired)byaqualifiedservicetechnicianannuallytoensure continued safe operation. Pay attention to anydeteriorationfromcorrosionorothersources.

LubricationThebearingsintheblowermotorandinducerblowerusedinthesefurnacesarepre-lubricatedandsealedbythemanufacturer.Nofurtheroilingofthebearingsisrequiredforthelifeofthemotor.

27

Ifthefurnacefailstooperatecheckthefollowing:• Isthethermostatoperatingproperly?• Aretheblowercompartmentdoor(s)inplace?• Isthefurnacedisconnectclosed?• Hasthecircuitbreakertrippedorthecontrolboardfuse

burnedopen?• Isthegasturnedon?• Areanymanualresetswitchesopen?• Isthefilterdirtyorplugged?• Istheflamesensorcoated?(Removeandcleanwith

steelwool.(Donotuseemeryclothorsandpaper!)• Isthereblockageinthecondensatedrainswitch?Also

verifythatthereisnodoubletrappingofcondensate.• Is thesecondaryheatexchanger freeofdebrisand

clogs?• Isevaporatorcoilcleanandfreeofdebris(Ifapplicable).• ArealltheLED’sonthefurnacecontrolboardconstantly

ON?Ifnot,refertoTable6orthewiringdiagram(Figure18,page29)todeterminefaultcondition.

IMPORTANTNOTE:Thefurnacewilllockoutafter5failedattemptsfor ignitionandwill tryagaineveryhourifthecallforheatremains.

• Iftheinducerblowerisoperating,anditemsabovehavebeenverified,checktheblowerlimitswitchandresetifnecessary.SeeFigure17forcomponentlocation.

• IfthefurnaceoperateswhentheBlowerLimitSwitchisreset,contactaqualifiedservicetechniciantoidentifyandrepairtheproblem.

• If the furnace still doesn’t operate, check the flameroll-outswitch(Figure17)andresetifnecessary.

• Ifthefurnaceoperateswhentheflamerolloutswitchisreset,contactaqualifiedservicetechniciantoidentifyandrepairtheproblem.

DiagnosticDescription Green LED Red LED

ControlFault(NoPower) Off Off

L1/NeutralPolarityFault Flash Flash

1HourLockout AlternatingFlash

NormalOperation On On

PressureSwitchClosedFault On Flash

PressureSwitchOpenFault Flash On

OpenLimitSwitchFault Flash Off

MotorFault On Off

DiagnosticDescription Yellow LED

LowFlameSensorSignal ContinuousFlash

FlamePresent On

Table 6. Control Board Fault Conditions

TROUBLESHOOTING DESCRIPTION OF COMPONENTSThedescriptionsbelowarevariousfunctionalcomponentsthataffecttheoperationandshuttingdownofthisfurnace.SomeofthesecomponentsandtheirlocationsareshowninFigure17.Ifanycomponentofthefurnacemustbereplaced,useonlyfactoryauthorizedreplacementpartsspecifiedintheReplacementPartsListprovidedonline.

BlowerLimitSwitch:Preventsoperationwhenblowerisnotoperational.

Flame Sensor: Verifieswhenaflamehascarriedoverfromtheignitertotheoppositeendburner.Ifnoflameisdetected,thefurnacewillshutdownwithin4seconds.

FlameRoll-OutSwitch:Verifiesthattheburnerflamesaredrawnintotheheatexchangertubes.Iftheburnerflamesarenotproperlydrawnintotheheatexchanger,theflameroll-outswitchwillclosethegasvalveandinitiatetheshutdowncycle.

GasValve:Controlstheflowofgastotheburners.Whenthe gas valve is energized it automatically opens andregulatesthegaspressureinthemanifold.

Inducer Assembly: Vents products of combustion totheoutside.

Pressure Switch: Verifies that the inducer is drawingthecombustiongasesthroughtheheatexchanger.Thepressureswitchpreventsfurnaceoperationwithexcessiveflue/condensateblockageorimproperinduceroperation.

Main Air Limit Switch: Prevents the air temperatureleavingthefurnacefromexceedingthemaximumallowableoutletairtemperature.

Figure17.FurnaceComponents

Blower Assembly

Inducer Assembly

Gas Valve

Gas Manifold &Burner Assembly

ON / OFF Switch

Control Board

Limit Switch

Inline DrainAssembly

24V Transformer

Igniter

Main Air Limit Switch

Flame Sensor

Roll-Out Switch

Combustion Air Pipe

Exhaust Vent Pipe

28

FIGURES & TABLES

Figure 18. Furnace Dimensions

57

18

11 5/8

11 5/8

1 3/8

1 5/8

24 3/16

4 3/4

2 7/8

1 3/4

1 3/4

16 1/2

13 5/8

3 1/2” X 1 1/2” Slots for Gas Pipe& Condensate drains (Typ.)

FRONTVIEW

LEFTSIDE

TOPVIEW

BOTTOM VIEW

3 3/4” Dia.(2 Places)

32

2

7/8 Dia. Holefor Line Voltage

RIGHTSIDE

3 1/2

1 1/2 Dia. Holefor Thermostat

22 1/2

29

WIRING DIAGRAM

Figure 19. CMF95 Wiring Diagram

IGN

ITO

R

IND

UC

ER

FLA

ME

SE

NS

OR

C

VE

NT

LIM

IT

DO

OR

SW

ITC

H

R

4 S

PE

ED

MO

TO

R

FLA

ME

RO

LLO

UT

GA

SV

ALV

E

H

MH

ML

L

C

BLO

WE

RD

EC

KLI

MIT

SU

PP

LYA

IR L

IMIT

PR

ES

SU

RE

SW

ITC

H

R C Y G W

LOW

ML

MH

HIGH

EAC

L1

XFMR

HUM

123

456

789

123

456

CO

M3

AM

P F

US

E24

V

24 V

120

V

WH

ITE

W/ B

LK S

TR

IPE

S

BLK

W/ W

HIT

E S

TR

IPE

S

12

34

12

34

11

22

33

44

55

66

77

88

99

L1ANEUTRALS

GR

EE

N YE

LLO

W

RE

D

RC

TXRXW

COM

1 21 2

1 21 2

12

34

WH

ITE

RE

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BLU

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RA

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E

BLA

CK

WH

ITE

BLA

CK

BLU

E

BLU

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BLUE

BLU

E/W

HIT

E

BLUE

OR

AN

GE

OR

AN

GE

GR

EE

N

WHITE

BLUE

YE

LLO

W

RE

DO

RA

NG

E

BLA

CK

WH

ITE

BLU

E

BLA

CK

RE

D

BLA

CK

BLA

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BLACK

BLU

E

GR

EE

N

BLUE

BLACK

BLACK

WH

ITE

YE

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W

SIN

GLE

STA

GE

TH

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MO

STA

T

TO OUTDOOR UNIT

FIE

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D:

LOW

VO

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GE

HIG

H V

OLT

AG

E

WIR

ING

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AM

For

80+

and

90+

Sin

gle

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ge

Furn

aces

Ref

er t

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alla

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stru

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ns

pro

vid

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ith

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e fu

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r th

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rop

er h

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an

d c

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sp

eed

sfo

r yo

ur

app

licat

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.

If a

ny o

f th

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rig

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wir

e as

su

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lied

wit

hth

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ust

be

rep

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be

rep

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ith

wir

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mat

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ate

mp

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gn

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escr

ipti

on

Gre

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DC

ontr

ol F

ault

(No

Pow

er)

Off

Off

L1 /

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tral

Pol

arity

Fau

ltF

lash

Fla

sh1

Hou

r Lo

ckou

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On

Onoitarep

O lamro

N Pre

ssur

e S

witc

h C

lose

d F

ault

On

Fla

shP

ress

ure

Sw

itch

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ault

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pen

Lim

it S

witc

h F

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ff

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7112

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(Rep

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0)05

/12

30

GAS INFORMATION

GAS PIPE CAPACITIES

NominalPipeDiameter (IN.)

LengthofPipeRun(Feet)

10 20 30 40 50 60 70 80

1/2 130 90 75 65 55 50 45 40

3/4 280 190 150 130 115 105 95 90

1 520 350 285 245 215 195 180 170

11/4 1,050 730 590 500 440 400 370 350

11/2 1,600 1,100 890 760 670 610

NOTE: Thecubicfeetperhourlistedinthetableabovemustbegreaterthanthecubicfeetperhourofgasflowrequiredbythefurnace.Todeterminethecubicfeetperhourofgasflowrequiredbythefurnace,dividetheinputrateofthefurnacebytheheatingvalue(fromgassupplier)ofthegas.

Cubic Feet Per Hour Required =Input To Furnace (Btu/hr)

Heating Value of Gas (Btu/Cu. Ft.)

Table8.CapacityofBlackIronGasPipe(cu.ft.perhour)forNaturalGasw/SpecificGravity=0.60

GAS FLOW RATES

TIME FORONE REVOLUTION

(SECONDS)

CUBIC FEET PERREVOLUTION OF GAS METER

1 5 10

10 360 1,800 3,600

12 300 1,500 3,000

14 257 1,286 2,571

16 225 1,125 2,250

18 200 1,000 2,000

20 180 900 1,800

22 164 818 1,636

24 150 750 1,500

26 138 692 1,385

28 129 643 1,286

30 120 600 1,200

32 113 563 1,125

34 106 529 1,059

36 100 500 1,000

38 95 474 947

40 90 450 900

42 86 429 857

44 82 409 818

46 78 391 783

48 75 375 750

50 72 360 720

52 69 346 692

54 67 333 667

56 64 321 643

58 62 310 621

60 60 300 600

62 58 290 581

64 56 281 563

Table7.GasFlowRates(CubicFeetperHour)

GAS FLOW RATES

TIME FORONE REVOLUTION

(SECONDS)

CUBIC FEET PERREVOLUTION OF GAS METER

1 5 10

66 55 273 545

68 53 265 529

70 51 257 514

72 50 250 500

74 49 243 486

76 47 237 474

78 46 231 462

80 45 225 450

82 44 220 439

84 43 214 429

86 42 209 419

88 41 205 409

90 40 200 400

92 39 196 391

94 38 191 383

96 38 188 375

98 37 184 367

100 36 180 360

102 35 176 353

104 35 173 346

106 34 170 340

108 33 167 333

110 33 164 327

112 32 161 321

114 32 158 316

116 31 155 310

118 31 153 305

120 30 150 300

31

LOCAL HEATING VALUES FOR NATURAL GAS

ALTITUDE ABOVE SEA LEVEL

BTU PER CUBIC FOOT

650 700 750 800 850 900 950 1,000 1,050

2,000FT LOW LOW LOW LOW LOW LOW HIGH HIGH HIGH

3,000FT LOW LOW LOW LOW LOW LOW HIGH HIGH HIGH

4,000FT LOW LOW LOW LOW LOW HIGH HIGH HIGH HIGH

5,000FT LOW LOW LOW LOW LOW HIGH HIGH HIGH HIGH

6,000FT LOW LOW LOW LOW HIGH HIGH HIGH HIGH HIGH

7,000FT LOW LOW LOW LOW HIGH HIGH HIGH HIGH HIGH

8,000FT LOW LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH

9,000FT LOW LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH

10,000FT LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH HIGH

Table10.NaturalGasHeatingValues

Table11.OrificesforNaturalGasHighHeatingValue

HIGH HEATING VALUE &MANIFOLDPRESSURE=3.5in.W.C.

ALTITUDE ABOVESEA LEVEL

INPUT (BTU)

45,000 72,000

0to1,999FT 49 47

2,000to2,999FT 50 48

3,000to3,999FT 50 48

4,000to4,999FT 51 48

5,000to5,999FT 51 49

6,000to6,999FT 51 49

7,000to7,999FT 52 50

8,000to8,999FT 52 50

9,000to9,999FT 52 50

LOW HEATING VALUE &MANIFOLDPRESSURE=3.5in.W.C.

ALTITUDE ABOVE SEA LEVEL

INPUT (BTU)

45,000 72,000

0to1,999FT 49 47

2,000to2,999FT 49 47

3,000to3,999FT 49 47

4,000to4,999FT 50 47

5,000to5,999FT 50 47

6,000to6,999FT 50 48

7,000to7,999FT 51 48

8,000to8,999FT 51 49

9,000to9,999FT 51 49

Table12.OrificesforNaturalGasLow Heating Value

Table9.OrificesforPropaneGas

ORIFICES FOR PROPANE GASMANIFOLDPRESSURE=10in.W.C.

ALTITUDE ABOVE SEA LEVEL

INPUT (BTU)

45,000 72,000

0to1,999FT 57 56

2,000to2,999FT 57 56

3,000to3,999FT 57 56

4,000to4,999FT 57 56

5,000to5,999FT 58 56

6,000to6,999FT 59 57

7,000to7,999FT 59 57

8,000to8,999FT 60 57

9,000to9,999FT 61 57

32

VENTING INFORMATION

Table 13. Vent Termination Clearances

Clearance Location

CANADIAN INSTALLATIONS a US INSTALLATIONS b

DirectVent(2-pipe)&ConventionalVent(1-pipe)Furnaces

Direct Vent(2-pipe)Furnaces

ConventionalVent(1-pipe)Furnaces

A Clearanceabovegrade,veranda,porch,deck,balcony,ormaximumexpectedsnowlevel. 12inches(30cm) 12inches(30cm) 12inches(30cm)

B Clearancetowindowordoorthatmaybeopened.

6inches(15cm)forappliances<10,000Btuh(3kW)

6inches(15cm)forappliances<10,000Btuh(3kW)

4ft.(1.2m)belowortosideofopening;1ft.(300mm)above

opening

12inches(30cm)forappliances10,000Btuh-100,000Btuh(30kW)

9inches(23cm)forappliances10,000Btuh-50,000Btuh(30kW)

36inches(91cm)forappliances>100,000Btuh(30Kw)

12inches(30cm)forappliances>50,000Btuh(30Kw)

C Clearancetopermanentlyclosedwindow12inches(30cm)suggestedorasneededtoavoid

condensationonglass.12inches(30cm)suggestedorasneededtoavoidcondensationonglass.

DVerticalclearancetoventilatedsoffitlocatedabovetheterminalwithinahorizontaldistanceof2feet(61cm)fromthecenterlineoftheterminal.

ClearancemustbegreaterthanthedepthofthesoffitunlessitcomplieswithFigure20

(page33)

ClearancemustbegreaterthanthedepthofthesoffitunlessitcomplieswithFigure20(page33)

E Clearancetounventilatedsoffit.ClearancemustbegreaterthanthedepthofthesoffitunlessitcomplieswithFigure20(page33)

ClearancemustbegreaterthanthedepthofthesoffitunlessitcomplieswithFigure20(page33)

F Clearancetooutsidecorner.AllClearancesinthisFigureapply

onbothwallsAllClearancesinthisFigureapplyonbothwalls

G Clearancetoinsidecorner.AllClearancesinthisFigureapply

onbothwallsAllClearancesinthisFigureapplyonbothwalls

H Clearancetoeachsideofcenterlineextendedabovemeter/regulatorassembly.

3feet(91cm)withinaheight15feetabovethemeter/regulatorassembly

3feet(91cm)withinaheightof15feet

I Clearancetoserviceregulatorventoutlet. 3feet(91cm) 3feet(91cm)inanydirection

JClearancetonon-mechanicalairsupplyinlettobuildingorthecombustionairinlettoanyotherappliance.

6inches(15cm)forappliances<10,000Btuh(3kW)

6inches(15cm)forappliances<10,000Btuh(3kW)

4ft.(1.2m)belowortosideofopening;1ft.(300mm)above

opening

12inches(30cm)forappliances10,000Btuh-100,000Btuh(30kW)

9inches(23cm)forappliances10,000Btuh-50,000Btuh(30kW)

36inches(91cm)forappliances>100,000Btuh(30Kw)

12inches(30cm)forappliances>50,000Btuh(30Kw)

K Clearancetomechanicalairsupplyinlet. 6feet(1.83m)3feet(91cm)aboveifwithin

10feet(3m)horizontally3ft.(91cm)aboveifwithin10feet(3m)horizontally

L Clearanceabovepavedsidewalkordrivewaylocatedonpublicproperty. 7feet(2.13m)c 7feet(2.13m)c 7ft.(2.13m)

M Clearanceunderopenveranda,porch,deck,orbalcony. 12inches(30cm)d 12inches(30cm)d 12inches(30cm)d

NOTES:

a=InaccordancewiththecurrentCSAB149.1NaturalGasandPropaneInstallationGuideCode

b=InaccordancewiththecurrentANSIZ223.1/NFPA54NaturalFuelGasCode

c=Aventshallnotterminatedirectlyaboveasidewalkorpaveddrivewaythatislocatedbetweentwosinglefamilydwellingsandservesbothdwellings.

d=Permittedonlyifveranda,porch,deck,orbalconyisfullyopenonaminimumoftwosidesbeneaththefloor.

VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED

33

Figure20.Horizontal&VerticalVenting

VERTICAL VENTING HORIZONTAL VENTING

FL

UE

PIP

E

Straps or Other SuitableSupports at minimum of 5 ft. Intervals

Upward Pitch - 1/4” per foot(Flue Pipe)

First support placedas close to furnace

connection as possible

WallNormal

Snow Level

CO

MB

US

TIO

N A

IR

Seal/CaulkAround Pipes

at Building

90° Elbow

7”12” Min.

90° Elbow

90° Elbow

Support System onVertical Rise

FL

UE

PIP

E

CO

MB

US

TIO

N A

IRSee Table 2 for

PVC Pipe Lengths (Field Supplied)

See Table 2 forPVC Pipe Lengths (Field Supplied)

Depth

Clea

ranc

e =

dept

h of

so�

t

Outlet

Outlet

NOTE: Only outlet vents are shown.For placement with combustion airinlet see Figure 1.

CLEARANCES FROM SOFFIT

Must beoutsideof line.

34

35

INSTALLATION / PERFORMANCE CHECK LIST

INSTALLER NAME:

CITY: STATE:

INSTALLATION ADDRESS:

CITY: STATE:

UNITMODEL#

UNITSERIAL#

MinimumclearancesperTable1(page5)?

YES NO

Hastheowner’sinformationbeenreviewedwiththehome-owner?

YES NO

Has the literaturepackagebeenleftnearthefurnace?

YES NO

ATTENTIONINSTALLERS:Itisyourresponsibilitytoknowthisproductbetterthanyourcustomer.This includesbeingable to install theproduct according to strictsafetyguidelinesand instructingthecustomeronhowtooperateandmaintaintheequipmentforthelifeoftheproduct.Safetyshouldalwaysbethedecidingfactorwheninstallingthisproductandusingcommon sense plays an important role as well. Pay attention toallsafetywarningsandanyotherspecialnoteshighlightedinthemanual.Improperinstallationofthefurnaceorfailuretofollowsafetywarningscouldresultinseriousinjury,death,orpropertydamage.

Theseinstructionsareprimarilyintendedtoassistqualifiedindividualsexperiencedintheproperinstallationofthisappliance.Somelocalcodesrequirelicensedinstallation/servicepersonnelforthistypeofequipment.Pleasereadallinstructionscarefullybeforestartingtheinstallation.Returntheseinstructionstothecustomer’spackageforfuturereference.

PROPOSITION 65 WARNING: This productcontains chemicals known to the state ofCaliforniatocausecancer,birthdefectsorotherreproductiveharm.

WARNING:

ELECTRICAL SYSTEM:

Electricalconnectionstight? YES NO

Linevoltagepolaritycorrect? YES NO

SupplyVoltage:________________________________ VOLTS

Hasthethermostatbeencalibrated? YES NO

Isthethermostatlevel? YES NO

Istheheatanticipatorsettingcorrect? YES NO

GAS SYSTEM:

GasType:(circleone)Natural

GasPropane

Gaspipeconnectionsleaktested? YES NO

GasLinePressure:____________________________ (in-W.C.)

InstallationAltitude: ______________________________ (FT.)

DerationPercentage:______________________________ (%)

FurnaceInput:_________________________________ (Btuh)

SupplyAirTemperature:__________________________ (°F)

ReturnAirTemperature:__________________________ (°F)

TemperatureRise:_______________________________ (°F)

COMBUSTION AIR & VENTING SYSTEM:

Isthereadequatefreshairsupplyforcombustionandventilation?

YES NO

Ventfreefromrestrictions? YES NO

Filter(s)securedinplace? YES NO

Filter(s)clean? YES NO

Flueconnectionstight? YES NO

Isthereproperdraft? YES NO

709438B(Replaces709438A)Specifications&illustrationssubjecttochangewithoutnoticeorincurringobligations(03/14).