Goodman MVM96 Series User manual

5151 San Felipe Suite 500
Houston, TX 77056
www.goodmanmfg.com • www.amana-hac.com
©2011 Goodman Manufacturing Company, L.P.
I NSTALLATION I NSTRUCTIONS FOR *MVM96 & *CVM96
M
ODULATING G AS F URNACE
IO-406
6/11
(Type FSP CATEGORY IV Direct or Non Direct VentAir Furnace)
These furnaces comply with requirements em-
bodied in theAmerican National Standard / Na-
tional Standard of CanadaANSI Z21.47·CSA-2.3
Gas Fired Central Furnaces.
CUS
®
Installer: Affix all manuals adjacent to the unit.
*NOTE: Please contact your distributor
or our website for the applicable
Specification Sheet referred to in this manual.
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know the product better than the customer. This includes all
safety precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all
safety warnings. Often during installation or repair it is possible to place yourself in a position which is more
hazardous than when the unit is in operation.
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a
customer in its safe use.
Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good
safety practices...follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if
there is a direct conflict between existing practices and the content of this manual, the precautions listed here
take precedence.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.

2
TABLEOFCONTENTS
SHIPPING INSPECTION....................................................................................................................................... 6
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................................................................................................ 6
TOTHE INSTALLER .......................................................................................................................................... 6
IMPORTANT NOTE TO THE OWNER REGARDING PRODUCT WARRANTY .......................................................................... 6
PRODUCT DESCRIPTION................................................................................................................................7
FEATURES ...................................................................................................................................................... 7
PRODUCT APPLICATION.................................................................................................................................. 7
LOCATION REQUIREMENTS & CONSIDERATIONS ..................................................................................... 8
CLEARANCES AND ACCESSIBILITY ........................................................................................................................ 9
EXISTING FURNACE REMOVAL ........................................................................................................................... 9
THERMOSTAT LOCATION .................................................................................................................................. 10
COMBUSTION & VENTILATION AIR REQUIREMENTS............................................................................... 10
INSTALLATION POSITIONS............................................................................................................................ 10
HORIZONTAL APPLICATIONS & CONSIDERATIONS .................................................................................. 10
FURNACE SUSPENSION ....................................................................................................................................11
DRAIN TRAP AND LINES ..................................................................................................................................11
LEVELING .....................................................................................................................................................11
ALTERNATE VENT/FLUE AND COMBUSTION AIR CONNECTIONS ..................................................................................11
ALTERNATE ELECTRICAL AND GAS LINE CONNECTIONS.......................................................................................... 12
DRAIN PAN .................................................................................................................................................. 12
FREEZE PROTECTION...................................................................................................................................... 12
PROPANE GAS/HIGH ALTITUDE INSTALLATIONS ...................................................................................... 12
VENT/FLUE PIPE & COMBUSTION AIR PIPE ............................................................................................... 12
DUAL CERTIFICATION: NON-DIRECT/DIRECT VENT ................................................................................................ 13
MATERIALS AND JOINING METHODS .................................................................................................................. 13
PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES .............................................................................. 13
TERMINATION LOCATIONS ................................................................................................................................13
CANADIAN VENTING REQUIREMENTS .................................................................................................................. 14
STANDARD FURNACE CONNECTIONS .................................................................................................................. 14
ALTERNATE FURNACE CONNECTIONS .................................................................................................................. 15
NON-DIRECT VENT (SINGLE PIPE) PIPING ......................................................................................................... 17
DIRECT VENT (DUAL PIPE) PIPING ................................................................................................................... 18
VENT/INTAKE TERMINATIONS FOR INSTALLATION OF MULTIPLE DIRECT VENT FURNACES ............................................... 20
CONCENTRIC VENT TERMINATION ...................................................................................................................... 20
SIDE WALL VENT KIT ..................................................................................................................................... 20
CONDENSATE DRAIN LINES & DRAIN TRAP............................................................................................... 20
STANDARD RIGHT OR LEFT SIDE DRAIN HOSE CONNECTIONS ................................................................................ 21
UPRIGHT INSTALLATIONS-TRAP ON RIGHT SIDE ................................................................................................... 21
UPRIGHT INSTALLATIONS-TRAP ON LEFT SIDE ..................................................................................................... 23
HORIZONTAL INSTALLATIONS ............................................................................................................................. 24
ELECTRICAL CONNECTIONS ....................................................................................................................... 26
WIRING HARNESS ......................................................................................................................................... 26
115 VOLT LINE CONNECTIONS ......................................................................................................................... 26
JUNCTION BOX RELOCATION ............................................................................................................................ 26
24VOLT THERMOSTAT WIRING ......................................................................................................................... 27
SINGLE-STAGE HEATING THERMOSTAT APPLICATION ............................................................................................. 28
24VOLT DEHUMIDISTAT WIRING ....................................................................................................................... 28
FOSSIL FUEL APPLICATIONS ............................................................................................................................ 28
115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) .................................... 28
24 VOLT HUMIDIFIER...................................................................................................................................... 29

3
GAS SUPPLY AND PIPING .............................................................................................................................. 29
HIGH ALTITUDE DERATE .................................................................................................................................. 29
PROPANE GAS CONVERSION ........................................................................................................................... 29
GAS PIPING CONNECTIONS ............................................................................................................................. 30
PROPANE GAS TANKS AND PIPING................................................................................................................... 32
CIRCULATING AIR & FILTERS........................................................................................................................ 33
DUCT WORK -AIR FLOW ................................................................................................................................. 33
CHECKING DUCT STATIC .................................................................................................................................. 33
BOTTOM RETURN AIR OPENING [UPFLOW MODELS]............................................................................................ 34
FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCT WORK ................................................... 34
UPRIGHT INSTALLATIONS .................................................................................................................................. 35
HORIZONTAL INSTALLATIONS ............................................................................................................................. 35
STARTUP PROCEDURE & ADJUSTMENT ................................................................................................... 35
HEATING OPERATION WITH CTK01AATHERMOSTAT (COMMUNICATING) .................................................................. 36
HEATING OPERATION WITH CTK02AATHERMOSTAT (MODULATING COMMUNICATING) ................................................ 37
HEAT ANTICIPATOR SETTING ............................................................................................................................. 37
DRAIN TRAP PRIMING .................................................................................................................................... 37
FURNACE OPERATION ..................................................................................................................................... 37
GAS SUPPLY PRESSURE MEASUREMENT ........................................................................................................... 37
GAS MANIFOLD PRESSURE MEASUREMENT ....................................................................................................... 38
GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) ...................................................................................... 39
TEMPERATURE RISE ...................................................................................................................................... 39
CIRCULATOR BLOWER SPEEDS ........................................................................................................................ 40
BLOWER HEAT OFF DELAY TIMINGS ................................................................................................................ 42
COMFORTNET™ SYSTEM ............................................................................................................................ 42
OVERVIEW ................................................................................................................................................... 42
AIRFLOW CONSIDERATION ................................................................................................................................42
DIP SWITCHES................................................................................................................................................. 44
FOSSIL FUEL APPLICATIONS ............................................................................................................................ 45
CTK0*AAWIRING ....................................................................................................................................... 45
COMFORTNET™SYSTEM ADVANCED FEATURES .................................................................................................. 45
FURNACE ADVANCED FEATURES MENU .............................................................................................................. 46
NETWORK TROUBLESHOOTING ........................................................................................................................... 47
SYSTEM TROUBLESHOOTING ............................................................................................................................ 47
FAULT RECALL SEQUENCE .............................................................................................................................. 47
FAULT CLEAR SEQUENCE: .............................................................................................................................. 48
NORMAL SEQUENCE OF OPERATION......................................................................................................... 48
POWER UP.................................................................................................................................................. 48
HEATING MODE ............................................................................................................................................ 48
COOLING MODE ........................................................................................................................................... 49
FAN ONLY MODE .......................................................................................................................................... 49
OPERATIONAL CHECKS ................................................................................................................................ 49
SAFETY CIRCUIT DESCRIPTION .................................................................................................................. 49
INTEGRATED FURNACE CONTROL (IFC) ............................................................................................................. 49
PRIMARY LIMIT ............................................................................................................................................. 49
AUXILIARY LIMIT ............................................................................................................................................ 49
ROLLOUT LIMIT ............................................................................................................................................. 49
PRESSURE SWITCHES..................................................................................................................................... 50
FLAME SENSOR ............................................................................................................................................ 50

4
G OODMAN  WILL  NOT  BE  RESPONSIBLE  FOR  ANY  INJURY  OR  PROPERTY 
DAMAGE  ARISING  FROM  IMPROPER  SERVICE  OR  SERVICE  PROCEDURES .
I
F  YOU  INSTALL  OR  PERFORM  SERVICE  ON  THIS  UNIT , YOU  ASSUME 
RESPONSIBILITY  FOR  ANY  PERSONAL  INJURY  OR  PROPERTY  DAMAGE 
WHICH  MAY  RESULT .M ANY  JURISDICTIONS  REQUIRE  A  LICENSE  TO 
INSTALL  OR  SERVICE  HEATING  AND  AIR  CONDITIONING  EQUIPMENT .
WARNING
TROUBLESHOOTING..................................................................................................................................... 50
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS .............................................................................................. 50
DIAGNOSTIC CHART ....................................................................................................................................... 50
RESETTING FROM LOCKOUT ............................................................................................................................ 50
MAINTENANCE ................................................................................................................................................ 50
ANNUAL INSPECTION ....................................................................................................................................... 51
FILTERS ....................................................................................................................................................... 51
BURNERS..................................................................................................................................................... 51
INDUCED DRAFT AND CIRCULATOR BLOWERS ...................................................................................................... 51
CONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER ONLY)................................................................... 51
FLAME SENSOR (QUALIFIED SERVICER ONLY) ................................................................................................... 51
BEFORE LEAVING AN INSTALLATION .......................................................................................................... 52
REPAIR AND REPLACEMENT PARTS ........................................................................................................... 52
TROUBLESHOOTING CODES....................................................................................................................... 53
STATUS CODES............................................................................................................................................... 58
WIRING DIAGRAM............................................................................................................................................ 59

5
Adheretothefollowingwarnings and cautionswhen installing,adjusting,altering, servicing, oroperating the furnace. Toensure
proper installation and operation, thoroughly read this manual for specifics pertaining to the installation and application of this
product.
T O  PREVENT  POSSIBLE  PROPERTY  DAMAGE , PERSONAL  INJURY  OR 
DEATH  DUE  TO  ELECTRICAL  SHOCK , THE  FURNACE  MUST  BE  LOCATED  TO 
PROTECT  THE  ELECTRICAL  COMPONENTS  FROM  WATER .
WARNING
CARBON MONOXIDE POISONING HAZARD
-
Special Warning for Installation of Furnace or Air Handling Units in
Enclosed Areas such as Garages, Utility Rooms or Parking Areas
Carbon monoxide producing devices (such as an automobile, space
heater, gas water heater, etc.) should not be operated in enclosed areas
such as unventilated garages, utility rooms or parking areas because of
the danger of carbon monoxide (CO) poisoning resulting from the exhaust
emissions. If a furnace or air handler is installed in an enclosed area such
as a garage, utility room or parking area and a carbon monoxide producing
device is operated therein, there must be adequate, direct outside
ventilation.
This ventilation is necessary to avoid the danger of CO poisoning which
can occur if a carbon monoxide producing device continues to operate in
the enclosed area. Carbon monoxide emissions can be (re)circulated
throughout the structure if the furnace or air handler is operating in any
mode.
CO can cause serious illness including permanent brain damage or death.
B10259-216
S HOULD  OVERHEATING  OCCUR  OR  THE  GAS  SUPPLY  FAIL  TO  SHUT  OFF ,
TURN  OFF  THE  MANUAL  GAS  SHUTOFF  VALVE  EXTERNAL  TO  THE 
FURNACE  BEFORE  TURNING  OFF  THE  ELECTRICAL  SUPPLY .
WARNING
P OSSIBLE  PROPERTY  DAMAGE , PERSONAL  INJURY  OR  DEATH  DUE  TO 
FIRE , EXPLOSION , SMOKE , SOOT , CONDENSATION , ELECTRICAL  SHOCK 
OR  CARBON  MONOXIDE  MAY  RESULT  FROM  IMPROPER  INSTALLATION ,
REPAIR  OPERATION , OR  MAINTENANCE  OF  THIS  PRODUCT .
WARNING
T O  PREVENT  PERSONAL  INJURY  OR  DEATH  DUE  TO  IMPROPER 
INSTALLATION , ADJUSTMENT , ALTERATION , SERVICE  OR  MAINTENANCE ,
REFER  TO  THIS  MANUAL .F OR  ADDITIONAL  ASSISTANCE  OR 
INFORMATION , CONSULT  A  QUALIFIED  INSTALLER , SERVICER  AGENCY  OR 
THE  GAS  SUPPLIER .
WARNING
I F  THE  INFORMATION  IN  THESE  INSTRUCTIONS  IS  NOT  FOLLOWED 
EXACTLY , A  FIRE  OR  EXPLOSION  MAY  RESULT  CAUSING  PROPERTY
DAMAGE
, PERSONAL  INJURY  OR  LOSS  OF  LIFE .
D O  NOT  STORE  OR  USE  GASOLINE  OR  OTHER  FLAMMABLE  VAPORS  AND 
LIQUIDS  IN  THE  VICINITY  OF  THIS  OR  ANY  OTHER  APPLIANCE .
D
O  NOT  TRY  TO  LIGHT  ANY  APPLIANCE .
D
O  NOT  TOUCH  ANY  ELECTRICAL  SWITCH ; DO  NOT  USE  ANY  PHONE 
IN  YOUR  BUILDING .
I
MMEDIATELY  CALL  YOUR  GAS  SUPPLIER  FROM  A  NEIGHBOR ’ S 
PHONE .F OLLOW  THE  GAS  SUPPLIER ’ S  INSTRUCTIONS .
I
F  YOU  CANNOT  REACH  YOUR  GAS  SUPPLIER , CALL  THE  FIRE 
DEPARTMENT .
I
NSTALLATION  AND  SERVICE  MUST  BE  PERFORMED  BY  A  QUALIFIED 
INSTALLER , SERVICE  AGENCY  OR  THE  GAS  SUPPLIER .
WHATTODOIFYOUSMELLGAS:




WARNING
T HIS  PRODUCT  CONTAINS  OR  PRODUCES  A  CHEMICAL  OR  CHEMICALS 
WHICH  MAY  CAUSE  SERIOUS  ILLNESS  OR  DEATH  AND  WHICH  ARE 
KNOWN  TO  THE S TATE  OF C ALIFORNIA  TO  CAUSE  CANCER , BIRTH 
DEFECTS  OR  OTHER  REPRODUCTIVE  HARM .
WARNING
H EATING  UNIT  SHOULD  NOT  BE  UTILIZED  WITHOUT  REASONABLE ,
ROUTINE , INSPECTION , MAINTENANCE  AND  SUPERVISION .I F  THE 
BUILDING  IN  WHICH  ANY  SUCH  DEVICE  IS  LOCATED  WILL  BE  VACANT ,
CARE  SHOULD  BE  TAKEN  THAT  SUCH  DEVICE  IS  ROUTINELY  INSPECTED ,
MAINTAINED  AND  MONITORED . IN  THE  EVENT  THAT  THE  BUILDING 
MAYBE  EXPOSED  TO  FREEZING  TEMPERATURES  AND  WILL  BE  VACANT ,
ALL  WATER ‐ BEARING  PIPES  SHOULD  BE  DRAINED , THE  BUILDING  SHOULD 
BE  PROPERLY  WINTERIZED , AND  THE  WATER  SOURCE  CLOSED . IN  THE 
EVENT  THAT  THE  BUILDING  MAY  BE  EXPOSED  TO  FREEZING 
TEMPERATURES  AND  WILL  BE  VACANT , ANY  HYDRONIC  COIL  UNITS 
SHOULD  BE  DRAINED  AS  WELL  AND , IN  SUCH  CASE , ALTERNATIVE  HEAT 
SOURCES  SHOULD  BE  UTILIZED .
WARNING

6
SHIPPINGINSPECTION
Allunits are securelypackedin shippingcontainerstested ac-
cordingtoInternationalSafeTransitAssociationspecifications.
Thecartonmustbecheckeduponarrivalforexternaldamage. If
damage is found, a request for inspection by carrier’s agent
mustbemadein writing immediately.
Thefurnacemustbecarefullyinspectedonarrivalfordamage
and bolts or screws which may have come loose in transit. In
theeventofdamagetheconsigneeshould:
1. Makeanotationondeliveryreceiptofanyvisibledamage
toshipmentor container.
2. Notifycarrierpromptlyandrequestaninspection.
3. Withconcealeddamage,carriermustbenotifiedassoon
aspossible- preferablywithinfivedays.
4. Filetheclaimwiththefollowingsupportdocumentswithin
a nine month statute of limitations.
• Original or certified copy of the Bill of Lading, or
indemnitybond.
• Originalpaidfreightbillorindemnityinlieuthereof.
• Originalorcertifiedcopyoftheinvoice,showingtrade
andotherdiscountsorreductions.
• Copy of the inspection report issued by carrier’s
representativeatthetimedamageisreportedtocarrier.
Thecarrierisresponsibleformakingpromptinspectionofdam-
ageandforathoroughinvestigationofeachclaim.Thedistribu-
torormanufacturerwillnotacceptclaimsfromdealersfortrans-
portationdamage.
ELECTROSTATICDISCHARGE(ESD)PRECAUTIONS
NOTE: Dischargebody’sstaticelectricitybeforetouchingunit.
Anelectrostaticdischarge can adversely affectelectricalcom-
ponents.
Use the following precautions during furnace installation and
servicingtoprotecttheintegratedcontrolmodulefromdamage.
Byputtingthefurnace,thecontrol,andthepersonatthesame
electrostaticpotential,thesestepswillhelpavoidexposingthe
integratedcontrolmoduletoelectrostaticdischarge. Thispro-
cedure is applicable to both installed and non-installed (un-
grounded)furnaces.
1. Disconnect all power to the furnace. Do not touch the
integratedcontrol moduleor anywireconnected tothe
control prior to discharging your body’s electrostatic
chargetoground.
2. Firmly touch a clean, unpainted, metal surface of the
furnacesnear thecontrol. Any toolsheldin a person’s
handduringgroundingwillbedischarged.
3. Service integratedcontrol moduleor connecting wiring
following the discharge process in step 2. Use caution
nottorecharge yourbody withstaticelectricity;(i.e., do
notmoveorshuffleyourfeet,do nottouchungrounded
objects,etc.). Ifyoucomeincontactwithanungrounded
object,repeatstep2beforetouchingcontrolorwires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a furnace. Return any old or new
controlstotheircontainersbeforetouchinganyungrounded
object.
TOTHEINSTALLER
Before installing this unit, please read this manual thoroughly to
familiarizeyourselfwithspecificitemswhichmustbeadheredto,
including but not limited to: unit maximum external static pres-
sure, gas pressures, BTU input rating, proper electrical connec-
tions,circulatingairtemperaturerise,minimumormaximumCFM,
andmotorspeedconnections.
IMPORTANTNOTETOTHEOWNERREGARDINGPRODUCTWAR-
RANTY
Yourwarrantycertificateissuppliedasaseparatedocumentwith
the unit installed by your contractor. Read the limited warranty
certificate carefully to determine what is and is not covered and
keep the warranty certificate in a safe place. If you are unable to
locate the warranty certificate please contact your installing con-
tractor or contact customer service (877-254-4729) to obtain a
copy.
ToreceivetheLifetimeHeatExchangerLimitedWarranty(goodfor
as long as you own your home) and the 10-year Parts Limited
Warranty,onlineregistrationmustbecompletedwithin60daysof
installation.OnlineregistrationisnotrequiredinCaliforniaorQue-
bec. Complete warranty details are available from your local
dealerorat www.goodmanmfg.com oratwww.amana-hac.com.
ToregisteryourGoodmanbrandunit,gotowww.goodmanmfg.com.
Clickon theword “Warranty”located on theleft side ofthehome
page. Next, click on the word “Product Registration” located on
the left side of the Warranty page and complete the forms in the
mannerindicatedontheProductRegistrationpage.
ToregisteryourAmana®brandunit,gotowww.amana-hac.com.
Clickonthe word “Warranty” located onthetoprightofthehome
page. Next, click on the word “Product Registration” located on
the left side of the Warranty page and complete the forms in the
mannerindicatedontheProductRegistrationpage.
Product limited warranty certificates for models currently in pro-
duction can be viewed at www.goodmanmfg or www.amana-
hac.com. If your model is not currently in production or does not
appearonthewebsite,pleasecontactyourinstallingcontractoror
contact customer service at (877-254-4729) to obtain a copy of
yourwarrantycertificate.
EachproductoverviewpagecontainsaProductWarrantylink;by
clickingonityouwillbeabletoviewthelimitedwarrantycoverage
forthatspecificproduct.Toviewwarrantyregistrationinformation,
clickonthe Product Warrantytext onthe leftnavigationpanelon
thehomepageofeachwebsite.TheOnlineProductRegistration
pages are located in this same section.

7
T O  PREVENT  PROPERTY  DAMAGE , PERSONAL  INJURY  OR  DEATH  DUE  TO 
FIRE , DO  NOT  INSTALL  THIS  FURNACE  IN  A  MOBILE  HOME , TRAILER , OR 
RECREATIONAL  VEHICLE .
WARNING
P RODUCT D ESCRIPTION
FEATURES
ThisfurnaceisapartoftheComfortNet™familyofproducts.The
CTK0*AA thermostatkitallowsthisfurnacetobeinstalledaspart
ofadigitallycommunicatingsystem.TheComfortNetsystempro-
vides automatic airflow configuration, enhanced setup features,
andenhanceddiagnostics.Italsoreducesthenumberofthermo-
statwirestoamaximumoffour.Itmaybealsoinstalledaspartof
anon-communicatingsystemusingastandard24VACthermo-
stat.
ThisproductmaybeinstalledwiththeComfortNetthermostatand
a non-ComfortNet compatible single stage air conditioning unit.
However, this reduces the benefits of the ComfortNet system as
theenhancementswillonlyapply to the furnace.
Themodulatingfurnaceoperationisbasedoffofnegativepres-
surecreated by thethedraftinducer.The IntegratedFurnace
Control(IFC) receives commandsfrom the roomthermostat.
The IFC then controls the RPM of the (3 phase) inducer by
varyingthe frequencyandvoltagetotheinducer.Thisisknown
as variable frequency drive (VFD). The inducer, pressure
switches,and gasvalve are linkedby pneumatictubing.The
gasvalve modulates basedon this negativepressure.
P RODUCT A PPLICATION
Thisfurnaceisprimarilydesignedforresidentialhome-heatingap-
plications. ItisNOTdesignedorcertifiedforuseinmobilehomes,
trailersorrecreational vehicles. Neither isit designedor certified
for outdoor applications. The furnace must be installed indoors
(i.e.,atticspace,crawlspace,orgarageareaprovidedthegarage
areaisenclosedwithanoperatingdoor).
Thisfurnacecanbeusedinthefollowingnon-industrialcommer-
cialapplications:
Schools,Officebuildings,Churches,Retailstores,
Nursinghomes,Hotels/motels,Commonorofficeareas
Insuchapplications,thefurnacemustbeinstalledwiththefollow-
ing stipulations:
• It must be installed per the installation instructions
providedandperlocalandnationalcodes.
• It must be installed indoors in a building constructed on
site.
• Itmustbepartofaductedsystemandnotusedinafree
airdeliveryapplication.
• It must not be used as a “make-up” air unit.
• Itmustbeinstalledwithtwo-pipesystemsforcombustion
air,especiallyifVOC’sorothercontaminantsarepresent
inthe conditioned space.
• AllotherwarrantyexclusionsandrestrictionsapplyThis
furnace is an ETL dual-certified appliance and is
appropriateforusewithnaturalorpropanegas(NOTE: If
usingpropane,apropaneconversionkitisrequired).
Dual certification means that the combustion air inlet pipe is op-
tionalandthefurnacecanbeventedasa:
Non-directvent(singlepipe)centralforcedairfurnacein
whichcombustion airis takenfrom theinstallation area
orfromairductedfromtheoutsideor,
Directvent(dualpipe)centralforcedairfurnace inwhich
allcombustionairsupplieddirectlytothefurnaceburners
through a special air intake system outlined in these
instructions.
This furnace may be used as a construction site heater ONLY if
allof thefollowingconditionsaremet:
• The vent system is permanently installed per these
installationinstructions.
• Aroom thermostat isusedto controlthe furnace.Fixed
jumpers that provide continuous heating CANNOT be
usedandcancauselongtermequipmentdamage.
• Returnairductsareprovidedandsealedtothefurnace.
• Areturnairtemperaturerangebetween60ºF(16ºC)and
80ºF(27ºC)ismaintained.
• Airfiltersareinstalledinthesystemandmaintainedduring
constructionreplacedasappropriateduringconstruction,
anduponcompletionofconstruction.
• Theinputrateandtemperaturerisearesetperthefurnace
ratingplate.
• 100% outside air is provided for combustion air
requirementsduringconstruction.Temporaryductingcan
beused.
NOTE:Donotconnectthetemporaryductdirectlytothe
furnace.Theductmustbesizedforadequatecombustion
and ventilation in accordance with the latest edition of
the National Fuel Gas Code NFPA54/ANSI Z223.1 or
CAN/CSAB149.1InstallationCodes.
•Thefurnaceheatexchanger,components,ductsystem,
air filters and evaporator coils are thoroughly cleaned
followingfinalconstructioncleanup.

8
• Allfurnaceoperatingconditions(includingignition,input
rate,temperatureriseandventing)areverifiedaccording
to these installation instructions.
NOTE: TheCommonwealthofMassachusettsrequiresthatthe
followingadditionalrequirementsmustalsobemet:
• Gasfurnacesmustbeinstalledbyalicensedplumberor
gasfitter.
• AT-handle gas cock must be used.
• Iftheunitistobeinstalledinanattic,thepassagewayto
andtheserviceareaaroundtheunitmusthaveflooring.
To ensure proper furnace operation, install, operate and
maintain the furnace in accordance with these installation
and operation instructions, all local building codes and or-
dinances. In their absence, follow the latest edition of the Na-
tionalFuelGasCode(NFPA54/ANSIZ223.1),and/orCAN/CSA
B149 Installation Codes, local plumbing or waste water codes,
andotherapplicablecodes.
AcopyoftheNationalFuelGasCode(NFPA54/ANSIZ223.1)
canbeobtainedfromanyofthefollowing:
American National Standards Institute
1430Broadway
NewYork, NY 10018
NationalFireProtectionAssociation
1BatterymarchPark
Quincy, MA 02269
CSA International
8501 East Pleasant Valley
Cleveland,OH44131
Theratedheatingcapacityofthefurnaceshouldbegreaterthanor
equaltothetotalheatlossoftheareatobeheated. Thetotalheat
loss should be calculated by an approved method or in accor-
dancewith“ASHRAEGuide”or“ManualJ-LoadCalculations”pub-
lishedbytheAirConditioningContractorsofAmerica.
Acopy of theCAN/CSAB149InstallationCodescanalsobe
obtainedfrom:
CSA International
178RexdaleBoulevard
Etobicoke,Ontario,CanadaM9W1R3
L OCATION R EQUIREMENTS &C ONSIDERATIONS
Followtheinstructionslistedbelowandtheguidelinesprovidedin
the Combustion and Ventilation Air Requirements section when
selectingafurnacelocation.
T O  PREVENT  POSSIBLE  EQUIPMENT  DAMAGE , PROPERTY  DAMAGE ,
PERSONAL  INJURY  OR  DEATH , THE  FOLLOWING  BULLET  POINTS  MUST  BE 
OBSERVED  WHEN  INSTALLING  THIS  UNIT .
WARNING
P OSSIBLE  PROPERTY  DAMAGE , PERSONAL  INJURY  OR  DEATH  DUE  TO 
FIRE , EXPLOSION , SMOKE , SOOT , CONDENSATION , ELECTRICAL  SHOCK 
OR  CARBON  MONOXIDE  MAY  RESULT  FROM  IMPROPER  INSTALLATION ,
REPAIR  OPERATION , OR  MAINTENANCE  OF  THIS  PRODUCT .
WARNING
• Centrallylocatethefurnacewithrespecttotheproposed
or existing air distribution system.
• Ensure the temperature of the return air entering the
furnaceisbetween55°Fand100°Fwhenthefurnaceis
heating.
• Provide provisions for venting combustion products
outdoors through a proper venting system. Special
consideration should be given to vent/flue pipe routing
andcombustion air intakepipewhen applicable. Refer
toVent/FluePipeandCombustionAirPipe-Termination
Locations for appropriate termination locations and to
determineifthepipingsystemfromfurnacetotermination
canbeaccomplishedwithintheguidelinesgiven. NOTE:
Thelengthofflueand/orcombustionairpipingcanbea
limitingfactorinthelocationofthe furnace.
• Locate the furnace so condensate flows downwards to
the drain. Do not locate the furnace or its condensate
drainage system in any area subject to below freezing
temperatureswithoutproperfreezeprotection.Referto
CondensateDrainLinesandTrapforfurtherdetails.
• Ensure adequate combustion air is available for the
furnace. Improper or insufficient combustion air can
exposebuildingoccupantstogascombustionproducts
that could include carbon monoxide. Refer to
CombustionandVentilationAirRequirements.
• Set the furnace on a level floor to enable proper
condensatedrainage. Ifthefloorbecomeswetordamp
attimes,placethefurnaceabovetheflooronaconcrete
basesizedapproximately1-1/2"largerthanthebaseof
the furnace. Refer to the Horizontal Applications and
Considerationsforlevelingofhorizontalfurnaces.
• Ensure upflow or horizontal furnaces are not installed
directlyoncarpeting,oranyothercombustiblematerial.
Theonlycombustiblematerialallowediswood.
• A special accessory subbase must be used for upright
counterflow unit installations over any combustible
material(includingwood). Refertosubbaseinstructions
for installation details. (NOTE: A subbase will not be
requiredifanairconditioningcoilislocatedbeneaththe
furnace between the supply air opening and the
combustiblefloor.
• Exposure to contaminated combustion air will result in
safetyandperformance-relatedproblems. Donotinstall
thefurnace wherethecombustion airis exposed tothe
followingsubstances:
permanentwavesolutions
chlorinatedwaxesorcleaners
chlorine-basedswimmingpoolchemicals
watersofteningchemicals

9
deicing salts or chemicals
carbontetrachloride
halogentyperefrigerants
cleaningsolutions(suchasperchloroethylene)
printinginks
paintremovers
varnishes
hydrochloricacid
cementsandglues
antistaticfabricsoftenersforclothesdryers
andmasonryacidwashingmaterials
• Sealoffanon-directventfurnaceifitisinstallednearan
area frequently contaminated by any of the above
substances. This protects the non-direct vent furnace
from airborne contaminants. To ensure that the
enclosednon-directventfurnacehasanadequatesupply
of combustion air, vent from a nearby uncontaminated
room or from outdoors. Refer to the Combustion and
VentilationAirRequirementsfordetails.
• If the furnace is used in connection with a cooling coil
unit, install the furnace upstream or in parallel with the
cooling coil unit. Premature heat exchanger failure will
resultifthecooling unit isplaced ahead ofthe furnace.
• Ifthefurnaceisinstalledinaresidentialgarage,position
the furnace so that the burners and ignition source are
located not less than 18 inches (457 mm) above the
floor. Protect the furnace from physical damage by
vehicles.
• Ifthefurnaceisinstalledhorizontally,ensuretheaccess
doorsarenotonthe“up/top”or“down/bottom”sideofthe
furnace.
• Donotconnectthisfurnacetoachimneyfluethatserves
aseparateappliancedesignedtoburnsolidfuel.
• OnCounterflowInstallations,theairconditioningcoilmust
bedownstreamonthesupply(positive)sideofthefurnace
heatexchanger.
•Counterflow Installation over a noncombustible floor.
Beforesettingthefurnaceovertheplenumopening,ensure
the surface around the opening is smooth and level.A
tightsealshouldbemadebetweenthefurnacebaseand
floor by using a silicone rubber caulking compound or
cementgrout.
•Counterflow Installation over a combustible floor. If
installationoveracombustiblefloorbecomesnecessary,
use an accessory subbase (see Specification Sheet
applicableforyourmodelfordetails.) Aspecialaccessory
subbase must be used for upright counterflow unit
installationsoveranycombustiblematerialincludingwood.
Refertosubbaseinstructionsforinstallationdetails.Follow
theinstructionswiththe subbase for properinstallation.
Do not install the furnace directly on carpeting, tile, or
other combustible material other than wood flooring.
(NOTE: The subbase will not be required if an air
conditioning coil is installed between the supply air
openingonthefurnaceandthefloor.)
CLEARANCESANDACCESSIBILITY
Installationsmustadheretotheclearancestocombustiblemate-
rialstowhichthisfurnacehasbeendesigncertified. Theminimum
clearanceinformationforthisfurnaceisprovidedontheunit’sclear-
ancelabel. Theseclearancesmustbepermanentlymaintained.
Clearancesmustalsoaccommodateaninstallation’sgas,electri-
cal, and drain trap and drain line connections. If the alternate
combustionairintakeorvent/flueconnectionsareusedadditional
clearancemustbeprovidedtoaccommodatetheseconnections.
RefertoVent/FluePipeandCombustionAirPipefordetails. NOTE:
Inadditiontotherequiredclearancestocombustiblematerials,a
minimumof24inchesserviceclearancemustbeavailableinfront
of the unit. TOP
BOTTOM
SIDE SIDE SIDE
TOP
BOTTOM
Upflow Counterflow Horizontal
A furnace installed in a confined space (i.e., a closet or utility
room) must have two ventilation openings with a total minimum
freeareaof0.25squareinchesper1,000BTU/hroffurnaceinput
rating. Refer to Specification Sheet applicable to your model for
minimumclearancestocombustiblesurfaces. Oneoftheventila-
tionopeningsmustbewithin12inchesofthetop;theotheropen-
ingmustbewithin12inchesofthebottomoftheconfinedspace.
Inatypicalconstruction,theclearancebetweenthedooranddoor
frameisusually adequatetosatisfythisventilationrequirement.
EXISTINGFURNACEREMOVAL
NOTE:Whenanexistingfurnaceisremovedfromaventingsys-
temservingotherappliances,theventingsystemmaybetoolarge
toproperlyventtheremainingattachedappliances.
ThefollowingventtestingprocedureisreproducedfromtheAmeri-
canNationalStandard/NationalStandardofCanadaforGas-
Fired Central Furnaces ANSI Z21.4, CSA-2.3 latest edition
Section 1.23.1.
The following steps shall be followed with each appliance con-
nected to the venting system placed in operation, while any
other appliances connected to the venting system are not in
operation:
1. Seal any unusedopeningsintheventingsystem;
2. Inspecttheventing system forproper sizeandhorizon-
tal pitch, as required by the National Fuel Gas Code,
ANSIZ223.1 orthe Natural Gasand PropaneInstalla-
tionCode, CSAB149.1-05and theseinstructions.De-
termine that there is no blockage or restriction, leak-
age,corrosionand other deficiencieswhichcouldcause
anunsafecondition.

10
C OMBUSTION &V ENTILATION A IR R EQUIREMENTS
T O  AVOID  PROPERTY  DAMAGE , PERSONAL  INJURY  OR  DEATH ,
SUFFICIENT  FRESH  AIR  FOR  PROPER  COMBUSTION  AND  VENTILATION  OF 
FLUE  GASES  MUST  BE  SUPPLIED .M OST  HOMES  REQUIRE  OUTSIDE  AIR  BE 
SUPPLIED  INTO  THE  FURNACE  AREA .
WARNING
Improvedconstructionandadditionalinsulationinbuildingshave
reducedheatlossbyreducingairinfiltrationandescapearound
doors and windows. These changes have helped in reducing
heating/coolingcostsbuthavecreatedaproblemsupplyingcom-
bustion and ventilation air for gas fired and other fuel burning
appliances. Appliances that pull air out of the house (clothes
dryers, exhaust fans, fireplaces, etc.) increase the problem by
starvingappliancesforair.
Housedepressurizationcancausebackdraftingorimpropercom-
bustionofgas-firedappliances,therebyexposingbuildingoccu-
pantstogascombustionproductsthatcouldincludecarbonmon-
oxide.
Ifthisfurnaceistobeinstalledinthesamespacewithothergas
appliances,suchasawaterheater,ensurethereisanadequate
supplyofcombustionandventilationairfortheotherappliances.
Refer to the latest edition of the National Fuel Gas Code NFPA
54/ANSIZ223.1or CAN/CSA B149Installation Codesorappli-
cable provisions of the local building codes for determining the
combustionairrequirementsfortheappliances.
Most homes will require outside air be supplied to the furnace
area by means of ventilation grilles or ducts connecting directly
totheoutdoorsorspacesopentotheoutdoorssuchasatticsor
crawl spaces.
I NSTALLATION P OSITIONS
Thisfurnacemaybeinstalledinanuprightpositionorhorizontal
oneithertheleftorrightsidepanel. Donotinstallthisfurnaceon
itsback. Foruprightupflowfurnaces,returnairductworkmaybe
attached to the side panel(s) and/or basepan. For horizontal
upflow furnaces, return air ductwork must be attached to the
basepan. For both upright or horizontal counterflow furnaces,
returnductworkmustbeattachedtothebasepan(topendofthe
blowercompartment). NOTE: Ductworkmustneverbeattached
to the back of the furnace. Contact your distributor for proper
airflowrequirementsandnumberofrequiredductworkconnec-
tions. Referto“RecommendedInstallationPositions”figure for
appropriateinstallationpositions,ductworkconnections,andre-
sultingairflowarrangements.
H ORIZONTAL A PPLICATIONS &C ONSIDERATIONS
Horizontal applications, in particular, may dictate many of the
installation’sspecificssuchasairflowdirection,ductworkconnec-
tions, flue and combustion air pipe connections, etc. The basic
applicationofthisfurnaceasahorizontalfurnacediffersonlyslightly
fromanuprightinstallation. Wheninstallingafurnacehorizontally,
additionalconsiderationmustbegiventothefollowing:
3. As far as practical, close all building doors and win-
dows and all doors between the space in which the
appliance(s) connected to the venting system are lo-
cated and other spaces of the building.
4. Closefireplacedampers.
5. Turnonclothesdryersandany appliancenotconnected
to the venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they shall
operateat maximumspeed.Do notoperatea summer
exhaustfan.
6. Followthelightinginstructions.Placetheappliancebeing
inspectedin operation.Adjust thermostat soappliance
shalloperate continuously.
7. Testfor spillagefromdrafthood appliancesatthe draft
hood relief opening after 5 minutes of main burner op-
eration. Use the flame of a match or candle.
8. Ifimproperventing is observedduringanyof the above
tests, the venting system must be corrected in accor-
dance with the National Fuel Gas CodeANSI Z223.1/
NFPA54 and/orNationalGasand PropaneInstallation
CodeCSAB149.1-05.
9. After it has been determined that each appliance con-
nectedto theventingsystemproperlyventswhentested
asoutlinedabove,returndoors,windows,exhaustfans,
fireplacedampersandany other gas burningappliance
totheir previousconditionsof use.
If resizing is required on any portion of the venting system, use
the appropriate table in Appendix G in the latest edition of the
National Fuel Gas Code ANSI Z223.1 and/or CSA B149.1-05
InstallationCodes.
THERMOSTATLOCATION
Thethermostatshouldbeplacedapproximatelyfivefeetfromthe
floor on a vibration-free, inside wall in an area having good air
circulation. Do not install the thermostat where it may be influ-
encedbyanyofthefollowing:
• Drafts,ordeadspotsbehinddoors,incorners,orunder
cabinets.
• Hotorcoldairfrom registers.
• Radiantheatfromthesun.
• Lightfixturesorotherappliances.
• Radiantheatfromafireplace.
• Concealedhotor cold waterpipes,orchimneys.
• Unconditioned areas behind the thermostat, such as
anoutside wall.
Consulttheinstructionspackagedwiththethermostatfor
mountinginstructionsandfurtherprecautions.