Goodman ComfortNet GCVC95 Series User manual

5151SanFelipeSuite500
Houston,TX77056
www.goodmanmfg.com•www.amana-hac.com
©2009 - 2012 Goodman Manufacturing Company, L.P.
I NSTALLATION I NSTRUCTIONS FOR *CVC9/95 & *MVC95 - T WO -S TAGE G AS F URNACE
IO-430
6/12
(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.
Installer: Affix all manuals adjacent to the unit.
*NOTE: Please contact your distributor
orourwebsitefortheapplicable
SpecificationSheet 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
SAFETY PRECAUTIONS ..................................................................................................................................... 5
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
FURNACE SUSPENSION .................................................................................................................................... 9
EXISTING FURNACE REMOVAL ........................................................................................................................... 9
THERMOSTAT LOCATION .................................................................................................................................. 10
COMBUSTION & VENTILATION AIR REQUIREMENTS ......................................................................................................... 10
INSTALLATION POSITIONS ........................................................................................................................................... 10
HORIZONTAL APPLICATIONS &CONSIDERATIONS .............................................................................................................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
FURNACE SUSPENSION .................................................................................................................................. 12
PROPANE GAS/HIGH ALTITUDE INSTALLATIONS .............................................................................................................. 12
VENT/FLUE PIPE & COMBUSTION AIR PIPE ................................................................................................................. 12
DUAL CERTIFICATION: NON-DIRECT/DIRECT VENT ............................................................................................... 12
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 ................................................................................................................. 21
STANDARD RIGHT OR LEFT SIDE DRAIN HOSE CONNECTIONS ............................................................................... 21
UPRIGHT INSTALLATIONS-TRAP ON RIGHT SIDE................................................................................................... 22
UPRIGHT INSTALLATIONS-TRAP ON LEFT SIDE .................................................................................................... 24
HORIZONTAL INSTALLATIONS ............................................................................................................................ 25
ELECTRICAL CONNECTIONS ....................................................................................................................................... 27
WIRING HARNESS ......................................................................................................................................... 27
115 VOLT LINE CONNECTIONS ........................................................................................................................ 27
JUNCTION BOX RELOCATION ........................................................................................................................... 27
24VOLT THERMOSTAT WIRING ........................................................................................................................ 28
SINGLE-STAGE HEATING THERMOSTAT APPLICATION ............................................................................................ 28
24VOLT DEHUMIDISTAT WIRING....................................................................................................................... 29
FOSSIL FUEL APPLICATIONS ............................................................................................................................ 29
115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) ................................... 29
24 VOLT HUMIDIFIER ..................................................................................................................................... 30
AUXILIARY ALARM SWITCH: ............................................................................................................................. 30
TableofContents

3
GAS SUPPLY AND PIPING ......................................................................................................................................... 30
HIGH ALTITUDE DERATE .................................................................................................................................. 31
PROPANE GAS CONVERSION .......................................................................................................................... 31
GAS PIPING CONNECTIONS ............................................................................................................................ 31
PROPANE GAS TANKS AND PIPING .................................................................................................................. 34
CIRCULATING AIR & FILTERS ..................................................................................................................................... 34
DUCT WORK -AIR FLOW ................................................................................................................................34
CHECKING DUCT STATIC ................................................................................................................................. 35
BOTTOM RETURN AIR OPENING [UPFLOW MODELS] ........................................................................................... 35
FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCT WORK .................................................. 36
UPRIGHT INSTALLATIONS ................................................................................................................................. 36
HORIZONTAL INSTALLATIONS ............................................................................................................................ 37
STARTUP PROCEDURE &ADJUSTMENT ......................................................................................................................... 37
HEAT ANTICIPATOR SETTING ............................................................................................................................. 37
DRAIN TRAP PRIMING ................................................................................................................................... 37
FURNACE OPERATION .................................................................................................................................... 37
GAS SUPPLY PRESSURE MEASUREMENT .......................................................................................................... 37
GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT ............................................................................... 39
GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) ..................................................................................... 39
TEMPERATURE RISE...................................................................................................................................... 40
CIRCULATOR BLOWER SPEEDS........................................................................................................................ 40
BLOWER HEAT OFF DELAY TIMINGS ............................................................................................................... 42
COMFORTNET™ SYSTEM ........................................................................................................................................ 43
OVERVIEW .................................................................................................................................................. 43
AIRFLOW CONSIDERATIONS ............................................................................................................................. 43
FOSSIL FUEL APPLICATIONS ............................................................................................................................ 43
CTK0* WIRING .......................................................................................................................................... 44
COMFORTNET SYSTEM ADVANCED FEATURES ..................................................................................................... 44
FURNACE ADVANCED FEATURES MENUS ............................................................................................................ 45
THERMOSTATE .............................................................................................................................................. 47
DIAGNOSTICS ............................................................................................................................................... 47
NETWORK TROUBLESHOOTING .......................................................................................................................... 47
SYSTEM TROUBLESHOOTING ........................................................................................................................... 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................................................................................................................................... 50
INTEGRATED CONTROL MODULE ....................................................................................................................... 50
PRIMARY LIMIT ............................................................................................................................................ 50
AUXILIARY LIMIT ........................................................................................................................................... 50
ROLLOUT LIMIT ............................................................................................................................................ 50
PRESSURE SWITCHES .................................................................................................................................... 50
FLAME SENSOR ........................................................................................................................................... 50
TROUBLESHOOTING ................................................................................................................................................. 50
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ............................................................................................. 50
DIAGNOSTIC CHART....................................................................................................................................... 50
RESETTING FROM LOCKOUT ........................................................................................................................... 50
Table of Contents

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
Table of Contents
MAINTENANCE ........................................................................................................................................................ 51
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
FLUE PASSAGES (QUALIFIED SERVICER ONLY) ................................................................................................. 52
BEFORE LEAVING AN INSTALLATION ............................................................................................................................. 52
REPAIR AND REPLACEMENT PARTS ............................................................................................................................ 52
DIP SWITCHES ....................................................................................................................................................... 53
TROUBLESHOOTING CHART ....................................................................................................................................... 54
*CVC9_AA,*MVC95_AA WIRING DIAGRAM ........................................................................................................... 60

5
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
S AFETY P RECAUTIONS
Adhereto the followingwarningsand cautions wheninstalling,adjusting,altering,servicing, oroperatingthefurnace. Toensure
proper installation andoperation, thoroughly read this manualfor specifics pertaining tothe installation and application of this
product.

6
SHIPPINGINSPECTION
Allunitsaresecurelypackedin shipping containers tested ac-
cordingtoInternationalSafeTransitAssociationspecifications.
Thecartonmustbecheckeduponarrivalforexternaldamage. If
damage is found, a request for inspection by carrier’s agent
mustbemade in writingimmediately.
Thefurnacemustbecarefullyinspectedonarrivalfordamage
and bolts or screws which may have come loose in transit. In
theeventofdamagetheconsigneeshould:
1. Makeanotationondeliveryreceiptofanyvisibledamage
toshipmentorcontainer.
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.
Anelectrostaticdischargecanadverselyaffectelectrical com-
ponents.
Use the following precautions during furnace installation and
servicingtoprotecttheintegratedcontrolmodulefromdamage.
Byputtingthefurnace,thecontrol,andthepersonatthesame
electrostaticpotential,thesestepswillhelpavoidexposingthe
integratedcontrol moduletoelectrostaticdischarge. This pro-
cedure is applicable to both installed and non-installed (un-
grounded)furnaces.
1. Disconnect all power to the furnace. Do not touch the
integratedcontrol module or anywire connectedto the
control prior to discharging your body’s electrostatic
chargetoground.
2. Firmly touch a clean, unpainted, metal surface of the
furnacesnear the control. Any toolsheld ina person’s
handduringgroundingwillbedischarged.
3. Service integratedcontrol moduleor connectingwiring
following the discharge process in step 2. Use caution
nottorechargeyourbodywith static electricity; (i.e., do
notmoveorshuffleyourfeet,donottouchungrounded
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.
IMPORTANT: To receive the Lifetime Heat Exchanger Limited
Warranty (good for as long as you own your home) and the 10-
year Parts Limited Warranty, online registration must be com-
pleted within 60 days of installation. Online registration is not re-
quiredinCalifornia or Quebec. Complete warranty details are
availablefromyour local dealer or, for Goodman®brandprod-
ucts,visit www.goodmanmfg.comandforAmana®brand prod-
ucts,visit www.amana-hac.com.
ToregisteryourGoodman®brandunit,gotowww.goodmanmfg.com
and click “Warranty Registration”. Complete the registration
asprompted.
To register yourAmana®brand unit, go to www.amana-hac.com
andclickon “Warranty Registration”. Complete the registra-
tionasprompted.
Product limited warranty certificates for models currently in pro-
ductioncanbeviewedatwww.goodmanmfg.comorwww.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,
clickontheProduct Warranty text on the 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*ComfortNetthermostatkitallowsthisfurnacetobeinstalled
aspartofadigitallycommunicatingsystem.TheComfortNetsys-
temprovidesautomaticairflowconfiguration,enhancedsetupfea-
tures, and enhanced diagnostics. It also reduces the number of
thermostatwirestoamaximumoffour.Itmaybealsoinstalledas
part of a non-communicating system using a standard 24 VAC
thermostat.
ThisproductmaybeinstalledwiththeComfortNetthermostatand
a non-ComfortNet compatible single stage air conditioning unit.
However, this reduces the benefits of the ComfortNet system as
theenhancements will onlyapplytothe furnace.
P RODUCT A PPLICATION
Thisfurnaceisprimarilydesignedforresidentialhome-heatingap-
plications. ItisNOTdesignedorcertifiedforuseinmobilehomes,
trailersorrecreational vehicles. Neither is it designed orcertified
for outdoor applications. The furnace must be installed indoors
(i.e.,atticspace,crawlspace,orgarageareaprovidedthegarage
areaisenclosedwithanoperatingdoor).
Thisfurnacecanbeusedinthefollowingnon-industrialcommer-
cialapplications:
Schools,Office buildings, Churches, Retail stores,
Nursinghomes,Hotels/motels,Commonor office areas
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
intheconditionedspace.
• 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 air is takenfromthe installation 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
allofthefollowingconditionsaremet:
• The vent system is permanently installed per these
installationinstructions.
• Aroomthermostatisusedtocontrolthefurnace. 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.
• 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.

8
AcopyoftheNationalFuelGasCode(NFPA54/ANSIZ223.1)
canbeobtainedfromanyofthefollowing:
American National Standards Institute
1430Broadway
NewYork, NY 10018
NationalFireProtectionAssociation
1Batterymarch Park
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.
Acopyofthe CAN/CSAB149InstallationCodescan alsobe
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
andcombustionairintakepipewhenapplicable. Refer
toVent/FluePipeandCombustionAirPipe-Termination
Locations for appropriate termination locations and to
determineifthepipingsystemfromfurnacetotermination
canbeaccomplishedwithintheguidelinesgiven. NOTE:
Thelengthofflueand/orcombustionairpipingcanbea
limitingfactor inthelocation ofthefurnace.
• 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 where the combustion air isexposed tothe
followingsubstances:
permanentwavesolutions
chlorinatedwaxesorcleaners
chlorine-basedswimmingpoolchemicals
watersofteningchemicals
deicing salts or chemicals
carbontetrachloride
halogentyperefrigerants
cleaningsolutions(suchasperchloroethylene)
printinginks
paintremovers
varnishes
hydrochloricacid
cementsand glues
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.

9
• 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
resultifthe cooling unitisplacedaheadof the 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
theinstructionswith the subbaseforproperinstallation.
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. These clearancesmustbe permanentlymaintained.
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.
FURNACESUSPENSION
Ifsuspendingthefurnacefromraftersorjoists,use3/8"threaded
rodand 2”x2”x1/8” angle iron as shownin thefollowing diagram.
Thelengthofrodwilldependontheapplicationandtheclearances
necessary.
2" 2" 3/8" ANGLE IRON
(3 PLACES )
XX
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 anyunusedopeningsintheventingsystem.

10
• Concealedhotorcoldwater pipes, or chimneys.
• Unconditioned areas behind the thermostat, such as
anoutsidewall.
Consultthe instructionspackagedwiththe thermostatfor
mountinginstructionsandfurtherprecautions.
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/ANSIZ223.1orCAN/CSA B149 Installation Codes or appli-
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
totheoutdoorsorspacesopentotheoutdoorssuchas atticsor
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 “Recommended InstallationPositions”figurefor
appropriateinstallationpositions,ductworkconnections,andre-
sultingairflowarrangements.
2. Inspecttheventingsystem for proper size and horizon-
tal pitch, as required by the National Fuel Gas Code,
ANSIZ223.1 or the Natural Gasand PropaneInstalla-
tionCode,CSA B149.1-05 and these instructions. De-
termine that there is no blockage or restriction, leak-
age,corrosionandotherdeficiencieswhichcouldcause
anunsafecondition.
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. Turnonclothesdryersandanyappliance notconnected
to the venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they shall
operateatmaximum speed. Do not operate a summer
exhaustfan.
6. Followthelightinginstructions.Placetheappliancebeing
inspectedinoperation.Adjust thermostatso appliance
shalloperatecontinuously.
7. Testfor spillage from drafthood appliances at the draft
hood relief opening after 5 minutes of main burner op-
eration. Use the flame of a match or candle.
8. Ifimproperventingis observed during any of the above
tests, the venting system must be corrected in accor-
dance with the National Fuel Gas CodeANSI Z223.1/
NFPA54and/orNationalGasandPropaneInstallation
CodeCSA B149.1-05.
9. After it has been determined that each appliance con-
nectedtotheventingsystemproperly ventswhentested
asoutlined above,returndoors, windows,exhaustfans,
fireplacedampersand any othergasburningappliance
totheirprevious conditions of use.
If resizing is required on any portion of the venting system, use
the appropriate table inAppendix 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.
• Hotor cold airfromregisters.
• Radiantheatfromthesun.
• Lightfixturesorotherappliances.
• Radiantheatfromafireplace.