Goodman CVC9/95 User manual
These furnaces comply with requirements embod-
ied in the American National Standard / National
Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired
Central Furnaces.
Installer: Affix all manuals adjacent to the unit.
*NOTE: Please contact your distributor
orourwebsitefortheapplicable
SpecificationSheetreferredtoin 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.
I
NSTALLATION
I
NSTRUCTIONS
FOR
*CVC9/95 & *MVC95 - T
WO
-S
TAGE
G
AS
F
URNACE
(Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace)
IO-430C
05/13
Goodman Manufacturing Company, L.P.
5151 San Felipe Suite 500
Houston, TX 77056
www.goodmanmfg.com • www.amana-hac.com
©2009-2013Goodman ManufacturingCompany, L.P.
2
SAFETY CONSIDERATIONS .................................................................................................................................5
SHIPPING INSPECTION ......................................................................................................................................6
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ...............................................................................................6
TOTHE INSTALLER ..........................................................................................................................................6
Product Description ...........................................................................................................................................7
FEATURES ......................................................................................................................................................7
ProductApplication............................................................................................................................................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........................................................................................................................................11
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/HighAltitude 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
VENT/INTAKE TERMINATIONS FOR INSTALLATION OF MULTIPLE DIRECT VENT FURNACES............................................19
CONCENTRIC VENT TERMINATION .....................................................................................................................19
SIDE WALL VENT KIT ....................................................................................................................................19
Condensate Drain Lines & Drain Trap ............................................................................................................19
STANDARD RIGHT OR LEFT SIDE DRAIN HOSE CONNECTIONS ...............................................................................20
UPRIGHT INSTALLATIONS-TRAP ON RIGHT SIDE ..................................................................................................20
UPRIGHT INSTALLATIONS-TRAP ON LEFT SIDE ....................................................................................................23
HORIZONTAL INSTALLATIONS - RIGHT SIDE DOWN ...............................................................................................24
Electrical Connections.....................................................................................................................................26
WIRING HARNESS..........................................................................................................................................26
115 VOLT LINE CONNECTIONS ........................................................................................................................26
JUNCTION BOX RELOCATION ...........................................................................................................................26
24 VOLT THERMOSTAT WIRING .......................................................................................................................27
SINGLE-STAGE HEATING THERMOSTAT APPLICATION............................................................................................27
24 VOLT DEHUMIDISTAT WIRING ......................................................................................................................28
FOSSIL FUEL APPLICATIONS ...........................................................................................................................28
115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) ..................................28
24 VOLT HUMIDIFIER .....................................................................................................................................29
AUXILIARY ALARM SWITCH:............................................................................................................................29
Gas Supply and Piping ....................................................................................................................................29
Table ofContents
3
HIGH ALTITUDE DERATE .................................................................................................................................30
PROPANE GAS CONVERSION ...........................................................................................................................30
GAS PIPING CONNECTIONS .............................................................................................................................30
PROPANE GAS TANKS AND PIPING ...................................................................................................................33
CirculatingAir & Filters....................................................................................................................................33
DUCT WORK - AIR FLOW ................................................................................................................................33
CHECKING DUCT STATIC .................................................................................................................................34
BOTTOM RETURN AIR OPENING [UPFLOW MODELS] ...........................................................................................34
FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCT WORK .................................................35
UPRIGHT INSTALLATIONS ................................................................................................................................35
HORIZONTAL INSTALLATIONS ............................................................................................................................36
Startup Procedure & Adjustment....................................................................................................................36
HEAT ANTICIPATOR SETTING............................................................................................................................36
DRAIN TRAP PRIMING ....................................................................................................................................36
FURNACE OPERATION .....................................................................................................................................36
GAS SUPPLY PRESSURE MEASUREMENT ...........................................................................................................36
GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT ...............................................................................38
GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY)......................................................................................38
TEMPERATURE RISE .......................................................................................................................................39
CIRCULATOR BLOWER SPEEDS ........................................................................................................................39
BLOWER HEAT OFF DELAY TIMINGS.................................................................................................................41
ComfortNet™ System......................................................................................................................................41
OVERVIEW ...................................................................................................................................................41
AIRFLOW CONSIDERATIONS .............................................................................................................................42
FOSSIL FUEL APPLICATIONS ...........................................................................................................................42
CTK0* WIRING .....................................................................................................................................................42
COMFORTNET SYSTEM ADVANCED FEATURES.....................................................................................................43
FURNACE ADVANCED FEATURES MENUS ............................................................................................................44
THERMOSTAT MENU .......................................................................................................................................46
DIAGNOSTICS ...............................................................................................................................................46
NETWORK TROUBLESHOOTING..........................................................................................................................46
SYSTEM TROUBLESHOOTING ............................................................................................................................47
Normal Sequence of Operation ......................................................................................................................47
POWER UP..................................................................................................................................................47
HEATING MODE .............................................................................................................................................47
COOLING MODE ............................................................................................................................................47
FAN ONLY MODE...........................................................................................................................................48
Operational Checks..........................................................................................................................................48
Safety Circuit Description ...............................................................................................................................48
INTEGRATED CONTROL MODULE .......................................................................................................................48
PRIMARY LIMIT .............................................................................................................................................48
AUXILIARY LIMIT ...........................................................................................................................................48
ROLLOUT LIMIT ............................................................................................................................................48
PRESSURE SWITCHES ....................................................................................................................................48
FLAME SENSOR ............................................................................................................................................48
Troubleshooting ......................................................................................................................................48
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS .............................................................................................48
DIAGNOSTIC CHART .......................................................................................................................................49
RESETTING FROM LOCKOUT ............................................................................................................................49
Maintenance .....................................................................................................................................................49
Tableof Contents
4
Tableof Contents
ANNUAL INSPECTION ......................................................................................................................................49
FILTERS .......................................................................................................................................................49
BURNERS .....................................................................................................................................................49
INDUCED DRAFT AND CIRCULATOR BLOWERS .....................................................................................................50
CONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER ONLY) ...................................................................50
FLAME SENSOR (QUALIFIED SERVICER ONLY) ....................................................................................................50
FLUE PASSAGES (QUALIFIED SERVICER ONLY)...................................................................................................50
Before Leaving an Installation ........................................................................................................................50
Repair and Replacement Parts .......................................................................................................................50
Dip Switches.....................................................................................................................................................51
Status Codes.....................................................................................................................................................52
Troubleshooting Chart .....................................................................................................................................53
Wiring Diagram.................................................................................................................................................58
SPECIAL INSTRUCTIONS FOR PRODUCTS INSTALLED IN THE STATE OF MASSACHUSETTS ......................................................59
5
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
.
WHATTODOIFYOUSMELLGAS:
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
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
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
S
AFETY
C
ONSIDERATIONS
Adhere to the following warnings and cautions when install-
ing, adjusting, altering, servicing, or operating the furnace.
To ensure proper installation and operation, thoroughly read
this manual for specifics pertaining to the installation and
application of this product.
Thisfurnaceis manufactured for use with natural gas.Itmay
be field converted to operate on L.P. gas by using the appro-
priate L.P. conversion kit listed in the PROPANE GAS/HIGH
ALTITUDE INSTALLATIONS section of this manual
Install this furnace only in a location and position as speci-
fiedinLOCATION REQUIREMENTS & CONSIDERATIONS
section and INSTALLATION POSITIONS section of this
manual.
Provide adequate combustion and ventilation air to the fur-
nace as specified in COMBUSTION & VENTILATION AIR
REQUIREMENTS section of this manual.
Combustion products must be discharged to the outdoors.
Connect this furnace to an approved vent system only, as
specified in VENT/FLUE PIPE & COMBUSTION AIR PIPE
section of this manual.
Never test for gas leaks with an open flame. Use a commer-
ciallyavailablesoap solution made specifically for the detec-
tion of leaks to check all connections, as specified in GAS
SUPPLYAND PIPING section of this manual.
Always install a furnace to operate within the furnace’s in-
tendedtemperature-riserangewitha duct system which has
externalstaticpressure within the allowable range, as speci-
fiedonthe furnaceratingplateand OPERATIONALCHECKS
section of these instructions.
When a furnace is installed so that supply ducts carry air
circulatedbythe furnace to areas outside the space contain-
ingthefurnace,thereturnairshallalsobehandled by duct(s)
sealedtothefurnacecasingandterminatingoutsidethespace
containing the furnace.
A gas-fired furnace for installation in a residential garage
must be installed as specified in the LOCATION REQUIRE-
MENTSAND CONSIDERATIONS section of this manual.
This furnace may be used as a construction site heater only
if certain conditions are met. These conditions are listed in
the PRODUCTAPPLICATION section of this manual.
6
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
SHIPPINGINSPECTION
Allunitsaresecurelypackedinshippingcontainerstestedac-
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
toshipmentorcontainer.
2. Notifycarrierpromptlyandrequestaninspection.
3. With concealed damage, carrier must be notified as
soon as possible - preferably within five days.
4. Filetheclaimwiththefollowingsupportdocumentswithina
ninemonthstatuteoflimitations.
• OriginalorcertifiedcopyoftheBillofLading,orindemnity
bond.
• Originalpaidfreightbillorindemnityinlieuthereof.
• Original or certified copy of the invoice, showing trade
andotherdiscountsorreductions.
• Copy of the inspection report issued by carrier’s
representativeatthetimedamageisreportedtocarrier.
Thecarrierisresponsibleformakingpromptinspectionofdamage
and for a thorough investigation of each claim. The distributor or
manufacturerwillnotacceptclaimsfromdealersfortransportation
damage.
ELECTROSTATICDISCHARGE(ESD)PRECAUTIONS
NOTE: Discharge body’s static electricity before touching unit.
Anelectrostaticdischargecanadverselyaffectelectricalcompo-
nents.
Usethefollowingprecautionsduringfurnaceinstallationandser-
vicingtoprotecttheintegratedcontrolmodulefromdamage. By
puttingthefurnace,thecontrol,andthepersonatthesameelec-
trostatic potential, these steps will help avoid exposing the inte-
gratedcontrolmoduletoelectrostaticdischarge. Thisprocedure
isapplicabletobothinstalledandnon-installed(ungrounded)fur-
naces.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the
controlprior todischargingyourbody’selectrostatic charge
toground.
2. Firmly touch a clean, unpainted, metal surface of the
furnaces near the control. Any tools held in a person’s
handduringgroundingwillbedischarged.
3. Service integrated control module or connecting wiring
followingthedischargeprocessinstep2. Usecautionnot
to recharge your body with static electricity; (i.e., do not
moveorshuffleyourfeet,donottouchungroundedobjects,
etc.). If you come in contact with an ungrounded 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.
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
This furnace is a part of the ComfortNet™ family of products.
The CTK0* ComfortNet thermostat kit allows this furnace to be
installed as part of a digitally communicating system. The
ComfortNetsystemprovidesautomaticairflowconfiguration,en-
hanced setup features, and enhanced diagnostics. It also re-
duces the number of thermostat wires to a maximum of four. It
may be also installed as part of a non-communicating system
usingastandard24VAC thermostat.
This product may be installed with the ComfortNet thermostat
and a non-ComfortNet compatible single stage air conditioning
unit. However, this reduces the benefits of the ComfortNet sys-
temastheenhancementswillonlyapplytothefurnace.
P
RODUCT
A
PPLICATION
This furnace is primarily designed for residential home-heating
applications. It is NOT designed or certified for use in mobile
homes,trailersorrecreationalvehicles. Neitherisitdesignedor
certifiedforoutdoorapplications. Thefurnacemustbeinstalled
indoors (i.e., attic space, crawl space, or garage area provided
thegarage area is enclosedwithan operating door).
This furnace can be used in the following non-industrial com-
mercialapplications:
Schools, Office buildings, Churches, Retail stores,
Nursinghomes,Hotels/motels,Commonoroffice areas
In such applications, the furnace must be installed with the fol-
lowingstipulations:
• It must be installed per the installation instructions
providedandper localandnationalcodes.
• Itmustbeinstalledindoorsinabuildingconstructedon
site.
• It must be part of a ducted system and not used in a
free air delivery application.
• It must not be used as a “make-up” air unit.
• Itmustbeinstalledwithtwo-pipesystemsforcombustion
air,especiallyifVOC’sorothercontaminantsarepresent
in the conditioned space.
• AllotherwarrantyexclusionsandrestrictionsapplyThis
furnace is an ETL dual-certified appliance and is
appropriateforusewithnaturalorpropanegas(NOTE:
Ifusingpropane,apropaneconversionkitisrequired).
Dual certification means that the combustion air inlet pipe is op-
tionaland the furnace can beventedas a:
Non-direct vent (single pipe) central forced air furnace
in which combustion air is taken from the installation
area or from air ducted from the outside or,
Direct vent (dual pipe) central forced air furnace in
whichallcombustion airsupplieddirectlyto thefurnace
burners through a special air intake system outlined in
theseinstructions.
This furnace may be used as a construction site heater ONLY if
allofthefollowingconditions aremet:
• 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
Acopyof the National Fuel Gas Code (NFPA54/ANSIZ223.1)
can be obtained from any of the following:
AmericanNationalStandardsInstitute
1430Broadway
NewYork, NY 10018
NationalFireProtectionAssociation
1 Batterymarch Park
Quincy, MA 02269
CSAInternational
8501EastPleasantValley
Cleveland,OH44131
Theratedheatingcapacityof the furnace shouldbegreaterthan
or equal to the total heat loss of the area to be heated. The total
heat loss should be calculated by an approved method or in ac-
cordancewith“ASHRAEGuide”or“ManualJ-LoadCalculations”
published by theAir Conditioning Contractors ofAmerica.
Acopyofthe CAN/CSA B149InstallationCodescanalso be
obtainedfrom:
CSAInternational
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
limitingfactorinthelocationofthefurnace.
• 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
thefurnacewhere the combustion air is exposed to the
followingsubstances:
permanentwavesolutions
chlorinatedwaxesorcleaners
chlorine-basedswimmingpoolchemicals
watersofteningchemicals
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 isplacedaheadofthefurnace.
For vertical (upflow or downflow) applications, the
minimum cooling coil width shall not be less than
9
furnace width minus 1”. Additionally, a coil installed
aboveanupflowfurnaceorunderacounterflowfurnace
maybethesame width asthefurnaceormaybe one
size larger than the furnace. Example: a “C” width
coil may be installed with a “B” width furnace.
Forupflowapplications,thefrontofthecoilandfurnace
must face the same direction.
• 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 forproperinstallation.
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-
ingmustbewithin12inchesof thebottomoftheconfinedspace.
In a typical construction, the clearance between the door and
doorframeis usually adequate to satisfy this ventilation require-
ment.
FURNACESUSPENSION
Ifsuspendingthefurnacefromraftersorjoists,use3/8"threaded
rodand2”x2”x1/8” angle iron as shown in thefollowingdiagram.
Thelengthofrodwilldependontheapplicationandtheclearances
necessary.
2" 2" 3/8"
ANGLE
IRON
(3
PLACES
)
XX
EXISTING FURNACE REMOVAL
NOTE: When an existing furnace is removed from a venting
system servingother appliances, theventingsystemmaybetoo
largetoproperlyventtheremainingattachedappliances.
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
• Concealed hot or cold water pipes, or chimneys.
• Unconditioned areas behind the thermostat, such as
anoutsidewall.
Consulttheinstructions packagedwiththethermostatfor
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.
House depressurization can cause back drafting or improper
combustion of gas-fired appliances, thereby exposing building
occupants to gas combustion products that could include car-
bonmonoxide.
Ifthisfurnaceistobeinstalled inthesamespacewithothergas
appliances,suchasawaterheater,ensurethereisanadequate
supplyofcombustionandventilationairfortheotherappliances.
Refer to the latest edition of the National Fuel Gas Code NFPA
54/ANSIZ223.1orCAN/CSAB149Installation 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
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“RecommendedInstallation Positions”figurefor
appropriateinstallationpositions,ductworkconnections,andre-
sultingairflowarrangements.
2. Inspect the venting system for proper size and hori-
zontalpitch,as requiredbytheNationalFuelGasCode,
ANSIZ223.1 or the Natural Gas and PropaneInstalla-
tionCode,CSAB149.1-05and 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. Turn on clothes dryers and any appliance not con-
nectedtothe ventingsystem.Turnonanyexhaustfans,
such as range hoods and bathroom exhausts, so they
shalloperateatmaximumspeed.Donotoperate asum-
merexhaustfan.
6. Follow the lighting instructions. Place the appliance
being inspected in operation.Adjust thermostat so ap-
plianceshalloperatecontinuously.
7. Testforspillagefromdrafthoodappliancesatthedraft
hood relief opening after 5 minutes of main burner op-
eration. Use the flame of a match or candle.
8. Ifimproperventingisobservedduring any of the above
tests, the venting system must be corrected in accor-
dance with the National Fuel Gas CodeANSI Z223.1/
NFPA54 and/orNationalGasandPropaneInstallation
CodeCSAB149.1-05.
9. After it has been determined that each appliance con-
nectedtotheventingsystem properlyventswhentested
asoutlinedabove, returndoors,windows,exhaustfans,
fireplacedampersandany other gasburningappliance
totheirpreviousconditionsof 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.
• Hotorcoldair fromregisters.
• Radiantheatfromthesun.
• Lightfixturesorotherappliances.
• Radiantheatfromafireplace.
11
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:
ALTERNATE VENT/FLUE
AND COMBUSTION AIR
INTAKE LOCATIONS
FURNACE MUST BE LEVEL
FROM END TO END
FURNACE MUST BE LEVEL
OR SLIGHTLY TILTED FORWARD
WITH THE DOORS 0" - 3/4"
BELOW THE BACK PANEL
DRAIN LINE WITH 1/4" PER FOOT
DOWNWARD SLOPE
36" MINIMUM SERVICE
CLEARANCE REQUIRED
FURNACE MUST BE SUPPORTED
AT BOTH ENDS AND MIDDLE
DRAIN PAN
GAS LINE WITH
DRIP LEG (3" MINIMUM)
4 3/4" MINIMUM
DRAIN TRAP
CLEARANCE
HorizontalFurnace
DRAIN TRAP AND LINES
Inhorizontalapplicationsthecondensatedraintrapissecuredto
the furnace side panel, suspending it below the furnace. Amini-
mum clearance of 4 3/4 inches below the furnace must be pro-
vided for the drain trap. Additionally, the appropriate downward
piping slope must be maintained from the drain trap to the drain
location.RefertoCondensateDrainTrapandLinesforfurtherde-
tails.Ifthedraintrapanddrainlinewillbeexposedtotemperatures
nearorbelowfreezing,adequatemeasuresmustbetakentopre-
ventcondensatefromfreezing.
LEVELING
Leveling ensures proper condensate drainage from the heat ex-
changerandinduceddraftblower. Forproperfluepipedrainage,
thefurnacemustbelevellengthwisefromendtoend. Thefurnace
shouldalsobe levelfrombacktofront orhaveaslight tiltwiththe
access doors downhill (approximately 3/4 inches) from the back
panel. Theslighttilt allowstheheatexchangercondensate,gen-
eratedintherecuperatorcoil,toflowforwardtotherecuperatorcoil
frontcover.
ALTERNATEVENT/FLUEANDCOMBUSTIONAIRCONNECTIONS
Inhorizontalinstallationsprovisionsforalternateflueandcombus-
tionairpipingareavailableforupflowfurnaceswithleftdischarge
andcounterflowfurnaceswithrightairdischarge. Thisconfigura-
tion allows the flue and combustion air piping to be run vertically
throughthesideofthefurnace. Refer to the “RecommendedIn-
stallation Positions” figure for further detail. The standard piping
connectionsmayalsobeusedinthesepositions. RefertoVent/
Flue Pipe and Combustion Air Pipe for details concerning the
conversiontothe alternatevent/flueandcombustionair connec-
tions.
Whenusingthehorizontalalternateventconfiguration,youmust
usetheRF000142ventdrainkit.Seefollowingillustration.
NOTE:
MAKE SMALL
LOOP IN HOSE TO
SERVE AS “P-TRAP”
VENT-DRAIN
“FIELD-SUPPLIED DRAIN
HOSE”
“FIELD-
SUPPLIED CONNECTOR”
FROM VENT-
DRAIN CONNECTED TO
CONDENSATE DRAIN
LINE WITH
AlternateVent/FlueLocation
RecommendedInstallationPositions
NOTE: Alternate “vertical” piping connections can not be used
whenanupflowfurnaceisinstalled withsupplyairdischargingto
theright,orwhenacounterflowfurnaceisinstalledwithsupplyair
discharging to the left. In either case, use the standard flue and
combustionairpipingconnections.
12
ALTERNATE ELECTRICAL AND GASLINE CONNECTIONS
This furnace has provisions allowing for electrical and gas line
connectionsthrougheitherside panel. In horizontalapplications
theconnectionscanbemadeeitherthroughthe“top”or“bottom”
of the furnace.
DRAIN PAN
A drain pan must be provided if the furnace is installed above a
conditionedarea. Thedrainpanmustcovertheentireareaunder
thefurnace(andairconditioningcoilifapplicable).
FREEZEPROTECTION
Refer to HorizontalApplicationsandConditions-DrainTrap and
Lines.
FURNACESUSPENSION
If the furnace is installed in a crawl space it must be suspended
from the floor joist or supported by a concrete pad. Never install
thefurnaceonthegroundorallowittobeexposedtowater. Refer
toLocationRequirementsandConsiderations-FurnaceSuspen-
sionforfurtherdetails.
P
ROPANE
G
AS
/H
IGH
A
LTITUDE
I
NSTALLATIONS
WARNING
P
OSSIBLE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
MAY
OCCUR
IF
THE
CORRECT
CONVERSION
KITS
ARE
NOT
INSTALLED
.T
HE
APPROPRIATE
KITS
MUST
BE
APPLIED
TO
ENSURE
SAFE
AND
PROPER
FURNACE
OPERATION
.A
LL
CONVERSIONS
MUST
BE
PERFORMED
BY
A
QUALIFIED
INSTALLER
OR
SERVICE
AGENCY
.
Thisfurnaceisshippedfromthefactoryconfiguredfornaturalgas
at standard altitude. Propane gas installations require an orifice
and orifice change to compensate for the energy content differ-
encebetweennaturalandpropanegas.
Highaltitudeinstallationsmayrequirebothapressureswitchand
anorifice/springchange. Thesechangesarenecessarytocom-
pensateforthenaturalreductioninthedensityofboththegasfuel
andthecombustionairathigher altitude.
Forinstallationsabove7000feet,pleaserefertothefurnaceSpeci-
ficationSheetsforrequiredkit(s).
High
Stage Low
Stage
Natural None #43 3.5" w.c. 1.9" w.c. None
Propane LPM-06* 1#55 10.0" w.c. 6.0"w.c. None
1LPM-06* supports both Honeywell and White-Rodgers 2-stage valves
Orifice
NOTE: In Canada, gas furnaces are only certified to 4500 feet.
Gas
0-7000
Manifold Pressure Pressure
Switch Change
Altitude Kit
Contact the distributor for a tabular listing of appropriate
manufacturer’s kits for propane gas and/or high altitude installa-
tions. The indicated kits must be used to insure safe and proper
furnaceoperation. Allconversionsmustbeperformedbyaquali-
fiedinstaller,orserviceagency.
V
ENT
/F
LUE
P
IPE
&C
OMBUSTION
A
IR
P
IPE
F
AILURE
TO
FOLLOW
THESE
INSTRUCTIONS
CAN
RESULT
IN
BODILY
INJURY
OR
DEATH
.C
AREFULLY
READ
AND
FOLLOW
ALL
INSTRUCTIONS
GIVEN
IN
THIS
SECTION
.
WARNING
U
PON
COMPLETION
OF
THE
FURNACE
INSTALLATION
,
CAREFULLY
INSPECT
THE
ENTIRE
FLUE
SYSTEM
BOTH
INSIDE
AND
OUTSIDE
OF
THE
FURNACE
TO
ASSURE
IT
IS
PROPERLY
SEALED
.L
EAKS
IN
THE
FLUE
SYSTEM
CAN
RESULT
IN
SERIOUS
PERSONAL
INJURY
OR
DEATH
DUE
TO
EXPOSURE
TO
FLUE
PRODUCTS
,
INCLUDING
CARBON
MONOXIDE
.
WARNING
Acondensinggasfurnaceachievesitshighlevelofefficiencyby
extractingalmost all of the heat from theproductsofcombustion
and cooling them to the point where condensation takes place.
Becauseoftherelativelylowfluegastemperatureandwatercon-
densationrequirements,PVCpipeisusedasventingmaterial.
In addition to PVC and ABS pipe and fittings, Innoflue®by
Centrotherm Eco Systems and PolyPro®by M&G Duravent
are also approved vent and combustion air materials for in-
stallationsintheU.S.A.andCanada.ManufacturersInstalla-
tion instructions for these products must be followed. These
products have specific instructions for installing, joining and
terminating.Donotmixmaterialsor componentsofone manu-
facturer with materials or components of another manufac-
turer.
All furnaces are built with 2" vent / intake pipe and connec-
tors. For furnaces requiring installation of 3" pipe, the transi-
tion from 2" to 3" should be done as close to the furnace as
practicallypossible.
This furnace must not be connected to Type B, BW, or L vent or
ventconnector,andmustnotbeventedintoanyportionofafac-
torybuiltormasonrychimneyexceptwhenusedasapathwayfor
PVC as described later in this section. Never common vent this
appliancewithanotherapplianceoruseaventwhichisusedbya
solid fuel appliance. Do not use commercially available “no hub
connectors”otherthanthoseshippedwiththisproduct.
It is the responsibility of the installer to follow the manufacturers’
recommendationsandtoverifythatallvent/fluepipingandconnec-
tors are compatible with furnace flue products. Additionally, it is
theresponsibilityofthe installertoensurethatall pipingandcon-
nectionspossessadequatestructuralintegrityandsupporttopre-
ventfluepipeseparation,shifting,orsaggingduringfurnaceopera-
tion.
DUALCERTIFICATION:NON-DIRECT/DIRECTVENT
Thisfurnaceisdualcertifiedandmaybeinstalledasanon-direct
vent(singlepipe)ordirectvent(dualpipe)appliance. Anon-direct
13
ventinstallation requires onlya vent/fluepipe, whilea direct vent
installation requires both a vent/flue pipe and a combustion air
intakepipe. Refer to the appropriate section fordetailsconcern-
ing piping size, length, number of elbows, furnace connections,
andterminations.
MATERIALS AND JOINING METHODS
T
O
AVOID
BODILY
INJURY
,
FIRE
OR
EXPLOSION
,
SOLVENT
CEMENTS
MUST
BE
KEPT
AWAY
FROM
ALL
IGNITION
SOURCES
(
I
.
E
.,
SPARKS
,
OPEN
FLAMES
,
AND
EXCESSIVE
HEAT
)
AS
THEY
ARE
COMBUSTIBLE
LIQUIDS
.
A
VOID
BREATHING
CEMENT
VAPORS
OR
CONTACT
WITH
SKIN
AND
/
OR
EYES
.
WARNING
Two-three-inchnominaldiameterPVCSchedule40pipemeet-
ingASTM D1785, PVCprimermeetingASTMF656,andPVC
solventcementmeetingASTMD2564specificationsmustbe
used. Fittings must be DWV type fittings meeting ASTM
D2665andASTMD3311. Carefullyfollowthemanufacturer’s
instructions for cutting, cleaning, and solvent cementing of
PVC.
The use of Schedule 40 PVC or ABS cellular core (Foam
Core)plasticpipeisalsoacceptableasaflue/vent and intake
pipematerial.PVCprimermeetingASTMF656andPVCsol-
vent cement meeting ASTM D2564 specifications must be
used.FittingsmustbeDWV typefittingsmeetingASTMD2665
andASTM D3311. Carefully follow the manufactures instruc-
tionsfor cutting, cleaning and solventcementingofPVC.
For Canadian installations; all PVC pipe, fittings and joining
materials must be UL S636 listed.
AsanalternativetoPVCpipe,primer,solventcement,andfittings,
ABSmaterialswhichareincompliancewiththefollowingspecifi-
cations may be used. Two-or-three-inchABS Schedule 40 pipe
must meetASTM D1527 and, if used in Canada, must be CSA
listed. Solvent cement forABS to ABS joints must meet ASTM
D2235 and, if used in Canada, must be CSA listed. The solvent
cementforthePVCtoABStransitionjointmustmeetASTMD3138.
Fittings must be DWV type fittings meeting ASTM D2661 and
ASTMD3311 and,ifusedin Canada,mustbeCSAlisted. Care-
fully follow the manufacturers’ instructions for cutting, cleaning,
andsolventcementingPVCand/orABS.
All 90° elbows must be medium radius (1/4 bend DWV) or long
radius (Long sweep 1/4 bend DWV) types conforming toASTM
D3311. Amedium radius (1/4 bend DWV) elbowmeasures31/
16”minimumfromtheplaneofoneopeningtothecenterlineofthe
other opening for 2” diameter pipe, and 4 9/16” minimum for 3”
pipe.
PROPERVENT/FLUEANDCOMBUSTIONAIRPIPINGPRACTICES
Adhere to these instructions to ensure safe and proper furnace
performance.The length,diameter,andnumberofelbowsofthe
vent/flue pipe and combustion air pipe (when applicable) affects
the performance of the furnace and must be carefully sized. All
pipingmustbeinstalledinaccordancewithlocalcodesandthese
instructions.
Some models require the use of 3” pipe. Do not transition
from a 2” to 3” pipe in a horizontal section of pipe as this may
createawater trap.
Piping must be adequately secured and supported to prohibit
sagging, joint separation, and/or detachment from the furnace.
Horizontalrunsofvent/fluepipingmustbesupportedeverythree
tofivefeetandmustmaintaina1/4inchperfootdownwardslope,
back towards the furnace, to properly return condensate to the
furnace’s drain system. Allowances should be made for minor
expansionandcontractionduetotemperaturevariations. Forthis
reason, particular care must be taken to secure piping when a
long run is followed by a short offset of less than 40 inches.
Precautionsshouldbetakentopreventcondensatefromfreezing
insidethevent/fluepipeand/oratthevent/fluepipetermination. All
vent/fluepipingexposedtofreezingtemperaturesbelow35°Ffor
extendedperiodsoftimemustbeinsulatedwith1/2”thickclosed
cellfoam. Alsoallvent/fluepipingexposedoutdoorsinexcessof
theterminationsshowninthismanual(orinunheatedareas)must
be insulated with 1/2” thick closed cell foam. Inspect piping for
leaksprior to installing insulation.
TERMINATION LOCATIONS
NOTE: RefertoLocationRequirementsandConsiderations for
combustionaircontaminantrestrictions.
The following bullets and diagram describe the restrictions con-
cerningtheappropriatelocationofvent/fluepipeandcombustion
airintakepipe(whenapplicable)terminations. RefertoNon-Direct
Vent (Single Pipe) Piping and Direct Vent (Dual Pipe) Piping lo-
cated in this section for specific details on termination construc-
tion.
• All terminations (flue and/or intake) must be located at
least12inchesabovegroundlevelortheanticipatedsnow
level.
• Vent terminations (non-direct and direct vent) must
terminateatleast3feetaboveanyforcedairinletlocated
within10feet.
NOTE: Thisprovisiondoesnotapplytothecombustion
airintaketerminationofadirectventapplication.
• Theventterminationofanon-directventapplicationmust
terminate at least 4 feet below, 4 feet horizontally from,
or1foot aboveanydoor,window, orgravityairinletinto
anybuilding.
• The vent termination of a direct vent application must
terminate at least 12 inches from any opening through
whichfluegasesmayenterabuilding(door,window,or
gravityairinlet).
• Theventterminationofventpiperunverticallythrougha
roofmustterminateatleast12inchesabovetheroofline
(ortheanticipatedsnowlevel)andbeatleast12inches
from any vertical wall (including any anticipated snow
buildup).
• Aventterminationshallnotterminateoverpublicwalkways
oroveranareawherecondensateorvaporcouldcreate
a nuisance or hazard or could be detrimental to the
operationofregulators,reliefvalves,orotherequipment.
14
ing an “S” joint to provide additional space at connection loca-
tions. This joint can be rotated on the fitting to establish maxi-
mumclearancebetweenrefrigerantlines,meteringdevices,and
condensatedrainlines,etc. Thisjointistheequivalentofone90
deg.elbowwhenconsideringelbowcount.
45 DEGREE
LONG-SWEEP
ELBOWS
V
E
N
T
Increased Clearance Configuration
NOTE: Do not use other commercially available “no hub con-
nectors”duetopossiblematerialconflicts. Thevent/fluepipecan
alsobesecuredusinga PVCorABSelboworcouplingusingthe
appropriateglue(seeMaterialsandJoiningMethods).
NOTE: For non-direct vent installations, a minimum of one 90°
elbowshouldbeinstalledonthecombustionairintakecouplingto
guardagainstinadvertentblockage.
COMBUSTION AIR PIPE
DIRECTVENTINSTALLATIONS
Onupflowunitssecurethecombustion air intake pipe directlyto
theairintakecoupling. Oncounterflowunitssecurethecombus-
tionairintakepipetotheairintakecouplingusingtherubbercou-
plingandwormgearhoseclampsprovidedwiththeunit.Thecoun-
terflowrubbercouplingallowsserviceremovalofairintakepiping
internalto the furnace blower compartment. NOTE: Becauseof
probable material conflicts, do not use other commercially avail-
able “no hub connectors”. The combustion air intake pipe can
also be secured directly to the counterflow unit air intake pipe
coupling.
NON-DIRECT VENT INSTALLATIONS
Aminimumofone 90°elbowshouldbeinstalled onthecombus-
tionairintake“coupling”toguardagainstinadvertentblockage.
• The combustion air intake termination of a direct vent
application should not terminate in an area which is
frequentlydustyordirty.
12"
Non-Direct Vent
Vent/Flue Termination
No Terminations
Above Walkway
12"
min.
4'
min.
Non-Direct Vent
Vent/Flue Termination
Direct Vent
Vent/Flue Termination
<10'
Forced Air
Inlet
Non-Direct Vent
&
Direct Vent
Vent/Flue Terminations
Grade or Highest
Anticipated
Snow Level
3' min.
12" min.
4' min.
12" min.
VentTerminationClearances
NOTE: In Canada, the Canadian Fuel Gas Code takes
precedenceovertheprecedingterminationrestrictions.
CANADIANVENTINGREQUIREMENTS
InCanada,ventingmustconformtothe requirements of the cur-
rentCAN/CSA-B149.1-05InstallationCode.UseonlyCSA-listed,
ULC-S636complianttwo-orthree-inchdiameterPVCorABSpipe,
solventcement,andfittingsthroughout. Thecertifiedpipingshould
beclearlymarkedwiththeULCStd“S636”onthepipeandfittings.
Carefully follow the pipe manufacturers’ instructions for cutting,
cleaning,andsolventcementingPVCand/orABS.
Theventcanberunthroughanexistingunusedchimneyprovided
thespacebetweentheventpipeandthechimneyisinsulatedand
closedwithaweather-tight,corrosion-resistantflashing.
STANDARDFURNACECONNECTIONS
It is the responsibility of the installer to ensure that the piping
connections to the furnace are secure, airtight, and adequately
supported.
Asshipped,attachment“couplings”forvent/flueandcombustion
airintakepipeconnectionsareprovidedonthefurnace’stopcover
(upflow) or basepan (counterflow). To use the standard connec-
tions,fieldsupplied vent/fluepipeandcombustionairintakepipe
(when applicable) should be secured directly to the furnace at
theselocations.
VENT/FLUEPIPE
Vent/flue pipe can be secured to the vent/flue coupling using the
rubber coupling and worm gear hose clamps provided with this
furnace(see“StandardConnections”figure). Therubbercoupling
allowsseparationofthevent/fluepipefromthefurnaceduringser-
vicing.CombustionAirandVentpipingshouldberoutedinaman-
nertoavoidcontactwithrefrigerantlines,meteringdevices,con-
densate drain lines, etc. If necessary, clearances may be in-
creasedbyutilizing two45deg.Long-SweepElbows andcreat-
15
RUBBER
COUPLING
WITH WORM
GEAR CLAMPS
RUBBER
COUPLINGS
WITH WORM
GEAR CLAMPS
COMBUSTION
AIR PIPE
(DIRECT VENT ONLY)
COMBUSTION
AIR PIPE
(DIRECT VENT ONLY)
VENT/FLUE
PIPE
VENT/FLUE
PIPE
90 PVC
ELBOW
(
NON-DIRECT VENT
)
90 PVC
ELBOW
(
NON-DIRECT VENT
)
Standard Connections
OR
OR
UPFLOW COUNTERFLOW
ALTERNATEFURNACECONNECTIONS
Ifthestandardlocationsareundesirableforaspecificinstallation,
alternatesidepanellocationsareavailableforbothcombustionair
inlet and vent/flue pipe connections. These locations may be of
particularbenefittouprightupflowinstallationsrequiringadditional
accesstoanAcoil,ortouprightcounterflowinstallationsrequiring
additionalaccesstoafilterorelectronicaircleaner,ortohorizontal
installations desiring vent/flue (and combustion air intake) piping
runverticallyfromthesideofthecabinet.
NOTE: Standardand alternate locations can becombined(i.e.,
an installation may use the standard combustion air intake loca-
tionbutusethealternatevent/fluelocationorviceversa),ifneeded.
E
DGES
OF
SHEET
METAL
HOLES
MAY
BE
SHARP
.U
SE
GLOVES
AS
A
PRECAUTION
WHEN
REMOVING
HOLE
PLUGS
.
WARNING
ALTERNATEVENT/FLUELOCATION
Thealternatevent/fluelocationisthelargeholedirectlyinlinewith
theinduceddraftbloweroutlet. Tousethealternatevent/flueloca-
tionrefertothefollowingstepsandthe“AlternateVent/FlueLoca-
tion”figure.
NOTE: Counterflowinstructionsfollowtheupflowinstructions.
1. Remove and save the four screws securing the vent/flue
couplingtothefurnacetoppanel.
Counterflowunits.
Remove and save the four screws securing the vent/flue
coupling to the furnace basepan. Also remove the three
screws securing the furnace’s internal vent/flue piping to
theblowerdeck.
2. UpflowandCounterflowunits.
Loosen the worm gear hose clamps on the rubber elbow
and detach it from both the induced draft blower and the
vent/fluepipe.
3. Upflow and Counterflow units.
Removethevent/fluepipefromthefurnace.
4. Cutthe vent/flue pipe 3.75inchesfromtheflangedendof
thepipe(see“Vent/FluePipeCuts”figure).Thesectionof
pipe attached to the coupling will reach through the side
panel to the induced draft blower. Discard remaining pipe
andelbows.
Counterflowunits.
Cut the vent/flue pipe 3.75 inches from the blower deck
coupling(see“Vent/FluePipeCuts”figure).Savevent/flue
pipeattachedtoblowerdeckcouplingforuseinthealternate
location.Discardremainingpipeandelbows.
FLANGE
CUT HERE
3.75"
Vent/Flue Pipe Cuts
5. Remove plastic plug from alternate vent/flue location.
Relocateandinstallpluginstandardvent/fluelocation(top
cover).
Counterflowunits.
Remove plastic plug from alternate vent/flue location.
Relocate and install plug in standard vent/flue location
(basepan). Plugremainingholeinblowerdeckwithplastic
plugincludedin the drain kit bag.
6. UpflowandCounterflowunits.
Insertcutsectionofvent/fluepipeandcouplingintoalternate
vent/fluelocation. Usingarubbercouplingandwormgear
hose clamps from the drain kit bag, attach the vent/flue
pipeandcoupling totheinduceddraftblower. Securethe
couplingtothecabinetusingthescrewsremovedinstep1
orwithfield-supplied3/8” #8selfdrillingscrews.
T
HE
RUBBER
ELBOW
IS
NOT
DESIGNED
TO
SUPPORT
A
LOAD
.W
HEN
THE
RUBBER
ELBOW
IS
MOUNTED
EXTERNALLY
TO
THE
FURNACE
CABINET
,
EXTREME
CARE
MUST
BE
TAKEN
TO
ADEQUATELY
SUPPORT
FIELD
‐
SUPPLIED
VENT
/
FLUE
PIPING
,
AS
DAMAGE
CAN
RESULT
IN
LEAKS
CAUSING
BODILY
INJURY
OR
DEATH
DUE
TO
EXPOSURE
TO
FLUE
GASES
,
INCLUDING
CARBON
MONOXIDE
WARNING
7. UpflowandCounterflowunits.
Foruprightinstallations,externallymounttherubberelbow
to the vent/flue coupling using a worm gear hose clamp.
Secure field supplied vent/flue piping to the rubber elbow
usingawormgearhoseclamp. NOTE: Useofthealternate
vent/fluelocationforuprightinstallations,requiresthedrain
trap be installed on the same side of the unit as the flue
pipe.
8. Upflow and Counterflow units.
For horizontal installations, externally secure the field-
suppliedvent/fluepipedirectlytothevent/fluecouplingusing
aPVCorABS couplingorelbow.
16
ALTERNATE COMBUSTION AIR INTAKE LOCATION -
COUNTERFLOW/HORIZONTAL MODELS ONLY
The alternate combustion air intake location consists of a large,
unobstructed hole (alternate vent connection is aligned with the
InducedDraftBlower).Tousethealternatecombustionairintake
location,referto thefollowingsteps,andthe “AlternateCombus-
tionAir Intake Location” figures.
3
REMOVE
PIPE
2
DETACH RUBBER
ELBOW FROM
ID BLOWER AND
VENT/FLUE
PIPE
4
REMOVE
AND RELOCATE
3
DETATCH RUBBER
ELBOW FROM
ID BLOWER AND
VENT/FLUE
PIPE
4
REMOVE
PIPE
5
REMOVE
A
ND RELOCATE
2
REMOVE
3 SCREWS
5
ADDITIONAL PLUG
FROM DRAIN KIT
7
EXTERNALLY
MOUNT
RUBBER ELBOW
6
SECURE TO
ID BLOWER WITH
RUBBER COUPLING
AND HOSE
CLAMPS
SECURE TO
CABINET WITH
SCREWS
1. Removeandsavethefourscrewssecuringthecombustion
airintakecouplingtothe basepan. Removeanadditional
three screws securing the furnace’s internal combustion
air intake pipe to the blower deck.
2. Remove the combustion air intake pipe from the furnace
andcutthepipeatthebasepancoupling. Savethebasepan
couplingandgasketfromtheblowerdeckcouplingforuse
inthe alternate location. Discard the remainingpipe.
3. Removeplastic plug fromalternatecombustionairintake
location. Relocate and install plug in standard air intake
location(basepan). Plugtheremainingholeintheblower
deck with the plastic plug included in the drain kit bag.
4. With the gasket facing the cabinet side panel, and the
flange’s flat spot facing forward, secure the combustion
airintakecouplingtothecabinetusingthescrewsremoved
instep1orwithfield-supplied3/8” #8 self -drilling screws.
B
E
SURE
NOT
TO
DAMAGE
INTERNAL
WIRING
OR
OTHER
COMPONENTS
WHEN
REINSTALLING
COUPLING
AND
SCREWS
.
CAUTION
5. Fornon-direct ventinstallationsinstalledhorizontally,a
minimum of one 90° elbow should be installed on the
combustionairintakecouplingtoguardagainstinadvertent
blockage. Noelbowisrequiredonthealternatecombustion
air intake of upright installations, however, a minimum
clearance of 2 inches is required to assure proper air
supply.
17
6. For direct vent installations, secure field-supplied
combustionairintakepipedirectlytotheairintakecoupling.
NOTE: APVCcouplingorelbowisrequiredoncounterflow
units.
NON-DIRECT VENT (SINGLE PIPE) PIPING
Non-direct vent installations require only a vent/flue pipe. The
vent pipe can be run horizontally with an exit through the side of
the building or run vertically with an exit through the roof of the
building. The vent can also be run through an existing unused
chimney;however,itmustextendaminimumof12inchesabove
thetopofthechimney. Thespacebetweentheventpipeandthe
chimneymustbeclosedwithaweather-tight,corrosion-resistant
flashing. For details concerning connection of the vent/flue pipe
to the furnace, refer to Vent/Flue Pipe and Combustion Air -
Standard Furnace Connections or Alternate Furnace Connec-
tions for specific details. Refer to the following Non-Direct Vent
(Single Pipe) Piping - Vent/Flue Pipe Terminations for specific
detailsonterminationconstruction.
Althoughnon-directventinstallationsdonotrequireacombustion
airintakepipe,aminimumofone90°elbowshouldbeattachedto
thefurnace’scombustionairintakeif: anuprightinstallation uses
the standard intake location, or a horizontal installation uses the
alternate air intake location. This elbow will guard against inad-
vertentblockageof theairintake.
VENT/FLUE PIPE LENGTHS AND DIAMETERS
NOTE: If either a 90 degree or 45 degree elbow is used for
termination,itmustbepointeddownward.
Refertothefollowingtableforapplicablelength,elbows,andpipe
diameter for construction of the vent/flue pipe system of a non-
direct vent installation. In addition to the vent/flue pipe, a single
90°elbowshouldbesecured to thecombustionairintaketopre-
ventinadvertentblockage. Theteeusedinthevent/fluetermina-
tionmustbeincludedwhendeterminingthenumberofelbowsin
thepipingsystem.
012345678
45,000 2
or 2 1/2 220 215 210 205 200 195 190 185 180
70,000 2
or 2 1/2 200 195 190 185 180 175 170 165 160
90,000 2
or 2 1/2 30 25 20 15 10
90,000 3 105 98 91 84 77 70 63 56 49
115,000 3119112
105989184777063
NA
*CVC9* & *MVC9* Direct Vent (2 - Pipe) and Non-Direct Vent (1- Pipe) (6)
Maximum Allowable Length of Vent/Flue Pipe
& Combustion Air Pipe (ft) (1) (2)
Unit
Input
(Btu)
Pipe
Size
(4) (in.)
Number of Elbows (3) (5)
1) Maximum allowable limits listed on individual lengths for inlet and flue
and NOT a combination.
2) Minimum requirement for each vent pipe is five (5) feet in length and
one elbow/tee.
3) Teeused in the vent/flue termination must be included when determining
the number of elbows in the piping system.
4) 2 1/2” or 3” diameter pipe can be used in place of 2” diameter pipe.
5) Increased Clearance Configurations using (2) 45 deg. Long Sweep el-
bows should be considered equivalent to one 90 deg. elbow.
6) One 90° elbow should be secured to the combustion air intake connec-
tion.
VENT/FLUE PIPE TERMINATIONS
The vent/flue pipe may terminate vertically, as through a roof, or
horizontally,asthrough anoutsidewall.
Verticalvent/fluepipeterminationsshouldbeasshowninthefol-
lowingfigure. RefertoVent/FluePipeandCombustionAirPipe-
TerminationLocationsfordetailsconcerninglocationrestrictions.
Thepenetrationoftheventthroughthe roof must be sealed tight
withproperflashingsuch asisusedwitha plasticplumbingvent.
Horizontal vent/flue pipe terminations should be as shown in the
followingfigure.RefertoVent/FluePipeandCombustionAirPipe
-TerminationLocationsfordetailsconcerninglocationrestrictions.
A23/8”diameter wallpenetrationisrequiredfor2”diameterpipe.
A3”diameterholeisrequiredfora21/2”pipeanda 31/2”diam-
eterholeisrequiredfor3”diameterpipe. Tosecurethepipepass-
ingthroughthewallandprohibitdamagetopipingconnections,a
couplingshouldbeinstalledoneithersideof thewallandsolvent
cemented to a length of pipe connecting the two couplings. The
length of pipe should be the wall thickness plus the depth of the
socketfittingstobeinstalledontheinsideandoutsideofthewall.
The wall penetration should be sealed with silicone caulking
material.
In abasement installation,the vent/fluepipecanbe runbetween
joistspaces. Iftheventpipemustgobelowajoistandthenupinto
thelastjoistspacetopenetratetheheader,two45°elbowsshould
beusedtoreachtheheaderratherthantwo90°elbows.
NOTE: Terminate both pipes in the same pressure zone
(sameside ofroof,nomajorobstaclesbetweenpipes, etc.).
18
COMBUSTION AIR INTAKE
(OPTIONAL)
*Not required for
single pipe installation
TEE (OPTIONAL)
96”MAX.-3”MIN.
ROOFLINE
INTAKE
SCREEN
OPTIONAL
12” MIN
HEIGHT DIFFERENCE
BETWEEN
INTAKEAND VENT
12” MIN TO ROOF OR HIGHEST
ANTICIPATED SNOW LEVEL
STRAIGHT
ELBOWS
VENT/FLUE TEE (
or
45° ELBOW
TURNED DOWN or
90° ELBOW TURNED
DOWN
OPTIONAL)
12" MIN. ABOVE
HIGHEST ANTICIPATED
SNOW LEVEL
12" MIN.
Horizontal Termination (Single Pipe)
AboveHighest Anticipated Snow Level
DIRECT VENT (DUAL PIPE) PIPING
Theinletairscreensprovidedintheinstallationinstructionpacket
areavailablefortheinstallertouseintheinletofthecombustionair
pipetopreventanimals from buildingnestsinthecombustionair
pipe. Installationofscreens,whilestronglyrecommended,isnot
requiredandwillnotaffectperformanceoftheunit.
Directventinstallationsrequirebothacombustionairintakeanda
vent/fluepipe. Thepipesmayberunhorizontallyandexitthrough
thesideofthebuildingorrunverticallyandexitthroughtheroofof
the building. The pipes may be run through an existing unused
chimney; however, they must extend a minimum of 12 inches
abovethetop ofthechimney. Thespacebetween thepipesand
thechimneymustbeclosedwithaweathertight,corrosionresis-
tantflashing. Boththe combustionairintakeandavent/fluepipe
terminations must be in the same atmospheric pressure zone.
Refer to Vent/Flue and Combustion Air Pipe - Termination Loca-
tionsorConcentricVentTermination for specificdetailsontermi-
nationconstruction. Fordetailsconcerningconnectionofpipesto
the furnace, refer to the Vent/Flue Pipe and Combustion Pipe -
Standard Furnace Connections or Alternate Furnace Connec-
tions.
VENT/FLUE &COMBUSTION AIR PIPE LENGTHS &DIAMETERS
Refertothefollowingtableforapplicablelength,elbows,andpipe
diameter for construction of the vent/flue and combustion air in-
take pipe systems of a direct vent (dual pipe) installation. The
number of elbows tabulated represents the number of elbows
and/or tees in each (Vent/Flue & Combustion Air Intake) pipe.
Elbows and/or tees used in the terminations must be included
whendeterminingthenumberofelbowsinthepipingsystems.
Ifthecombustionairintakepipeistobeinstalledaboveafinished
ceiling or other area where dripping of condensate will be objec-
tionable, insulation of the combustion air pipe may be required.
Use 1/2” thick closed cell foam insulation such asArmaflex™ or
Insultube™whererequired.
VENT/FLUE AND COMBUSTION AIR PIPE TERMINATIONS
The vent/flue and combustion air pipes may terminate vertically,
asthrougharoof, or horizontally, as through an outsidewall.
Vertical pipe terminations should be as shown in the following
figure. Refer to Vent/Flue Pipe and Combustion Pipe - Termina-
tion Locations for details concerning location restrictions. The
penetrations through the roof must be sealed tight with proper
flashingsuch as is used with a plasticplumbingvent.
Horizontalterminationsshouldbeasshowninthefollowingfigure.
RefertoVent/FluePipeandCombustionPipe-TerminationLoca-
tionforlocation restrictions.A2 3/8” diameter wall penetrationis
requiredfor2”diameterpipe. A3”diameterholeisrequiredfora2
1/2” pipe and a 3 1/2” diameter hole is required for 3” diameter
pipe. Thewallpenetrationshouldbesealedwithsiliconecaulking
material.
90º OR 45°
ELBOW
SCREEN
(OPTIONAL)
12" MIN. TO GRADE OR
HIGHEST ANTICIPATED
SNOW LEVEL
6” MAX
10”- 24”
4” MIN
Standard Horizontal Terminations (Dual Pipe)
19
Vent & Combustion Air Intake Measurements for Stan-
dard Horizontal Terminations (Dual Pipe)
Center to center = 10” min / 24” max.
Vertical separation: 0” - 24”
Vent termination from wall = 8” min / 12” max.
Combustion air intake from wall = 6” max.
Vent and intake clearance to ground
or anticipated snow level = 12” min.
SCREEN
(OPTIONAL)
AIR
INTAKE
90°
ELBOWS
12" MIN. ABOVE
HIGHEST ANTICIPATED
SNOW LEVEL
3” - 24”
AlternateHorizontal Vent Termination(Dual Pipe)
SCREEN
(OPTIONAL)
AIR
INTAKE
90°
ELBOWS
12" MIN. ABOVE
HIGHEST ANTICIPATED
SNOW LEVEL
3”-24” BETWEEN PIPES
Combustion Air Intake may also be snorkeled to obtain 12” min ground
clearance.
AlternateVentTerminationAboveAnticipatedSnowLevel
(DualPipe)
VENT/INTAKETERMINATIONSFORINSTALLATIONOFMULTIPLE
DIRECTVENTFURNACES
If more than one direct vent furnace is to be installed vertically
through a common roof top, maintain the same minimum clear-
ances between the exhaust vent and air intake terminations of
adjacentunitsaswiththeexhaustventandairintaketerminations
of a single unit.
Ifmorethanonedirectventfurnaceisto be installed horizontally
through a common side wall, maintain the clearances as in the
following figure.Always terminate all exhaust vent outlets at the
same elevation and always terminate all air intakes at the same
elevation.
3” MIN
12” MIN TO GRADE OR HIGHEST
ANTICIPATED SNOW LEVEL
12” MIN SEPARATION
3”MIN
24”MAX
OPTIONAL
INTAKE
SCREENS
Termination of Multiple Direct Vent Furnaces
CONCENTRIC VENT TERMINATION
Refer to the directions provided with the Concentric Vent Kit
(DCVK) for installation specifications.
SIDE WALL VENT KIT
Thiskitistobeusedwith2”or3”directventsystems.Theventkit
mustterminateoutsidethestructureandmaybeinstalledwiththe
intake and exhaust pipes located side-by-side or with one pipe
abovetheother.ThiskitisNOT intendedforusewith single pipe
(indirectvent)installations.
Refer to the directions furnished with the Side Wall Vent Kit
(p/n0170K00000S)forinstallationspecifications.
C
ONDENSATE
D
RAIN
L
INES
&D
RAIN
T
RAP
Acondensinggasfurnaceachievesitshighlevelofefficiencyby
extractingalmost all of the heat from theproductsofcombustion
and cooling them to the point where condensation takes place.
Thecondensatewhichisgeneratedmustbepipedtoanappropri-
atedrainlocation.
In upright installations, the furnace’s drain hoses may exit either
therightorleftsideofthefurnace. NOTE:Ifthealternatevent/flue
outlet is utilized in an upright installation, the drain trap and drain
connections must be located on the same side as the alternate
vent/flueoutlet.
In horizontal installations, the drain hoses will exit through the
bottom (down side) of the unit with the drain trap suspended be-
neath the furnace. The field-supplied drain system must be in
accordancewithall localcodesandthe instructionsinthefollow-
ing sections.
20
Follow the bullets listed below when installing the drain system.
Refertothefollowingsectionsforspecificdetailsconcerningfur-
nacedraintrapinstallationanddrainhose hook ups.
• Thedraintrapsupplied withthefurnacemustbe used.
• Thedrainline betweenfurnaceanddrain locationmust
beconstructedof3/4”PVC.
• Thedrainlinebetweenfurnaceanddrainlocationmust
maintaina1/4inchperfootdownwardslopetowardthe
drain.
• Donot trap the drain lineinanyother location than at
thedraintrapsuppliedwiththefurnace.
• Donotroute the drainlineoutsidewhere itmayfreeze.
• Ifthedrainlineisroutedthroughanareawhichmay
seetemperaturesnearorbelowfreezing,precautions
mustbetakentopreventcondensatefromfreezing
withinthedrainline.
• Ifanairconditioningcoilisinstalledwiththefurnace,a
commondrain may be used. An openteemustbe
installed in the drain line, near the cooling coil, to
relievepositiveairpressurefromthecoil’splenum.
Thisisnecessary toprohibitanyinterferencewith the
functionofthefurnace’sdraintrap.
STANDARDRIGHTORLEFTSIDEDRAINHOSECONNECTIONS
Allinstallationspositionsrequiretheuseofthedraintrap,hoses,
tubes, and clamps. The following quantity of hoses, tubes, and
hoseclampsareprovidedwiththeunit.
DRAIN TRAP
QTY: 1
GREEN
HOSE CLAMPS
QTY: 3 SILVER
HOSE CLAMP
QTY: 1
TUBE 2
QTY: 2
TUBE 1
QTY: 1
HOSE B
QTY: 1
HOSE A
QTY: 1
RED
HOSE CLAMP
QTY: 1
Hose and Tube Identification
UPRIGHT INSTALLATIONS-TRAP ON RIGHT SIDE
In a upright installation drain hoses are connected to drain ports
on the rubber elbow and the recuperator coil front cover. The
drain lines are then routed through the right side panel and into
the drain trap secured to the outside of the cabinet.
NOTE: Refer to Alternate Vent/Flue Hose Connections for up-
rightinstallationsusinganalternatevent/flueoutlet.
Other manuals for CVC9/95
1
This manual suits for next models
10
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