Nordyne Tc series User manual

Two-Stage Condensing gas FurnacesWith Fixed & Variable Speed Blowers 95.1% AFUE

*TC Upflow / Horizontal Furnace *TL Downflow Furnace

WARNING: AVERTISSEMENT

FIRE OR EXPLOSION HAZARD

•Failuretofollowsafetywarningsexactlycould

result in serious injury or property damage.

•Installation and service must be performed

bya qualified installer,service agencyor the

gas supplier.

•Do not store or use gasoline or other

flammable vapors and liquids in the vicinity

of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electrical switch; do not

use any phone in your building.

•Leave the building immediately.

•Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s

instructions.

•If you cannot reach your gas supplier, call

the fire department.

RISQUE D’INCENDIE OU D’ EXPLOSION

•Le non-respect des avertissements de

sécurité pourrait entraîner des blessures

graves, la mort ou des dommages matériels.

•L’installation et l’entretien doivent être

effectués par un installateur qualifi , un

organisme de service ou le fournisseur de

gazstaller,serviceagencyorthegassupplier.

•Ne pas entreposer ni utiliser de l’essence ni

d’autres vapeurs ou liquides inflammables

dans le voisinage de cet appareil, ni de tout

autre appareil.

QUE FAIRE S’IL Y A UNE ODEUR DE GAZ

•Ne pas tenter d’allumer aucun appareil.

•Ne toucher à aucun interrupteur électrique;

n’utiliser aucun téléphone dans le bâtiment.

•Évacuer l’immeuble immédiatement.

•Appeler immédiatement le fournisseur de

gaz en employant le téléphone d’un voisin.

Respecter à la lettre les instructions du

fournisseur de gaz.

•Sipersonnenerépond,appelerleservicedes

incendies.

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

INSTALLATION INSTRUCTIONS

TABLE OF CONTENTS

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

REQUIREMENTS & CODES .....................................4

Combustion Air Quality............................................5

Heating Load...........................................................5

Installation in a Garage ...........................................5

Operation of Furnace During Construction..............6

Clearances to Combustible Materials......................6

COMBUSTION AIR & VENTING REQUIREMENTS 7

Direct Vent Systems................................................8

Conventional Vent Systems - Confined Spaces......8

Air From Inside......................................................9

Outdoor Air from a Crawl Space or Vented Attic.. 9

Outdoor Air Using Vertical Ducts ..........................9

Outdoor Air Using Horizontal Ducts......................9

Air Directly Through an Exterior Wall.................... 9

Alternate Method of Providing Air from Outside:.. 10

Conventional Vent Systems - Unconfined Spaces. 10

Category IV Venting..................................................10

Vent Pipe Material................................................ 11

Vent Pipe Length & Diameter............................... 11

Vent Pipe Installation ........................................... 12

Outdoor Terminations - Horizontal Venting .......... 12

Outdoor Terminations - Vertical Venting............... 13

Vent Freezing Protection...................................... 13

Existing Installations ............................................ 14

Condensate Disposal ..............................................14

CIRCULATING AIR REQUIREMENTS..................... 14

Plenums & Air Ducts ...............................................14

Return Air Connections ...........................................15

Upflow & Horizontal Furnaces ............................. 15

Downflow Furnaces.............................................. 15

Supply Air Connections...........................................15

Acoustical Treatments............................................... 15

FURNACE INSTALLATION.........................................16

General Requirements ............................................16

Upflow Furnaces......................................................16

Horizontal Furnaces.................................................16

Downflow Furnaces.................................................17

Installation on a concrete slab ............................. 17

Inducer & Venting Options.......................................17

Inducer Assembly Rotation.................................. 17

Pressure Switch Tubing............................................ 18

Accessories.............................................................18

Finish Flange ....................................................... 18

Rubber Grommets ............................................... 18

PVC Components................................................ 19

Typical Orientation......................................... 19

Alternate Orientation ..................................... 19

Condensate Drain Lines ...................................... 20

Bottom Panel Removal............................................20

Alternate Bottom Panel Removal...........................20

GAS SUPPLY & PIPING........................................... 21

Leak Check..............................................................21

High Altitude Application (Natural Gas Only) ..........23

Converting from Natural Gas to LP / Propane.........23

ELECTRICAL WIRING ..............................................24

Line Voltage Wiring.................................................24

Grounding ...............................................................25

Thermostat / Low Voltage Connections..................25

Single Stage AC & Single Stage Thermostat.......26

Single Stage AC & Two Stage Thermostat...........26

Two-Stage AC & Two-Stage Thermostat..............26

Autostaging for Single Stage Thermostats .............26

Autostaging for Two-Stage Thermostats.................27

Blower Speed Configuration...................................27

Fixed Speed Blower Applications.........................27

Variable Speed Blower Applications.....................27

Dehumidification Options........................................27

START-UP & ADJUSTMENTS ..................................28

Pre-Start Check List................................................28

Start-up Procedures................................................28

Verifying & Adjusting Input Rate .............................28

Verifying & Adjusting Temperature Rise .................28

Heat Anticipator.......................................................28

Verifying Burner Operation......................................29

Verifying Operation of the Supply Air Limit Switch. 29

OPERATING SEQUENCE.............................................30

Heating Cycle..........................................................30

Cooling Cycle..........................................................30

Fan Mode .............................................................30

MAINTENANCE ..............................................................30

FIGURES &TABLES...................................................32

Figure 28. *TC & *TL Cabinet Dimensions...........32

Airflow Data.............................................................33

Table 6.*TC / *TL Heating / Cooling Airflows

(CFM) & Temperature Rises (°F) ............33

Table 7.*TC / *TL Nominal Heating Airflows

(CFM) & Temperature Rises (° F) for

Variable Speed Furnaces........................34

Table 8.*TC / *TL Nominal Cooling / Heat

Pump Airflows (CFM) for Variable

Speed Furnaces......................................35

Gas Information.......................................................36

Table 9.Gas Flow Rates.......................................36

Table 10. Gas Pipe Capacities .............................36

Table 11. High Altitude Deration - Propane Gas.. 37

Table 12. Natural Gas Heating Values...................37

Table 13. High Altitude Deration - Natural Gas

with HIGH Heating Value........................38

Table 14. High Altitude Deration - Natural Gas

with LOW Heating Value.........................38

Electrical Information...............................................39

Figure 29.Two-Stage Fixed Speed Motor

Control Board.......................................39

Figure 31.Two-Stage Furnace Control Board......39

Figure 30.Two-Stage Variable Speed Motor

Control Board.......................................39

Figure 32.Wiring Diagram for Two-Stage, Fixed

Speed Upflow Furnaces......................40

Figure 33.Wiring Diagram for Two-Stage, Fixed

Speed Downflow Furnaces................. 41

Figure 34.Wiring Diagram for Two-Stage, Variable

Speed Upflow Furnaces...................... 42

Figure 35.Wiring Diagram for Two-Stage, Variable

Speed Downflow Furnaces ................. 43

Venting Information..................................................44

Table 15.Vent Termination Clearances................ 44

Figure 36. Horizontal & Vertical Venting................45

Figure 37. Upflow Options.................................... 46

Figure 38. Horizontal Options .............................. 47

Figure 39. Downflow Options............................... 48

TROUBLESHOOTING .............................................. 49

FURNACE COMPONENTS....................................... 49

Table 16. Furnace Control Board Fault

Conditions............................................. 49

Table 17. Motor Control Board Fault Conditions .. 49

Figure 40. Component Locations......................... 50

INSTALLATION / PERFORMANCE CHECK LIST... 52

IMPORTANT SAFETY INFORMATION

INSTALLER:Pleasereadallinstructionsbeforeservicing

this equipment. Pay attention to all safety warnings and

any other special notes highlighted in the manual. Safety

markings are used frequently throughout this manual to

designate a degree or level of seriousness and should

not be ignored.

WARNING - indicates a potentially hazardous situation

thatifnotavoided,couldresultinpersonalinjuryordeath.

CAUTION - indicates a potentially hazardous situation

that if not avoided, may result in minor or moderate injury

or property damage.

WARNING:

The safety information listed in this manual

must be followed during the installation,

service, and operation of this unit. Unqualified

individualsshouldnotattempttointerpretthese

instructions or install this equipment. Failure

to follow safety recommendations could result

in possible damage to the equipment, serious

personal injury or death.

WARNING:

Unless otherwise noted in these instructions,

onlyfactoryauthorizedkitsoraccessoriesmay

be used with or when modifying this product.

WARNING:

Improper installation, service, adjustment,

or maintenance may cause explosion, fire,

electrical shock or other hazardous conditions

which mayresult in personal injuryor property

damage. Unless otherwise noted in these

instructions, only factory authorized kits or

accessories may be used with this product.

WARNING:

Do not install this furnace if any part has been

submerged under water. A flood damaged

furnace is extremely dangerous. Attempts to

usethefurnacemayresultinfireorexplosion.A

qualifiedserviceagencyshouldbecontactedto

inspectthefurnaceandtoreplaceanyelectrical

or control system parts that have been wet or

under water.

•To minimize equipment failure or personal injury, it is

essentialthatonlyqualifiedindividualsinstall,service,or

maintainthisequipment.Ifyoudonotpossesmechanical

skills or tools, call your local dealer for assistance.

•Follow all precautions in the literature, on tags, and

on labels provided with the equipment. Read and

thoroughly understand the instructions provided with

the equipment prior to performing the installation and

operational checkout of the equipment.

•Use caution when handling this appliance or removing

components.Personalinjurycanoccurfromsharpmetal

edgespresentinallsheetmetalconstructedequipment.

•Do not store any of the following on, or in contact with,

the unit: Rags, brooms, vacuum cleaners, or other

cleaning tools, spray or aerosol cans, soap powders,

bleaches, waxes, cleaning compounds, plastics or

plasticcontainers, paperbags or other paperproducts,

gasoline, kerosene, cigarette lighter fluid, dry cleaning

fluids, paint thinners, or other volatile fluids.

•Theinstallershouldbecomefamiliarwiththeunitswiring

diagram before making any electrical connections to

the unit. See Figure 32 (page 40), Figure 33 (page

41), Figure 34 (page 42), & Figure 35 (page 43)

or the unit wiring label.

•Always reinstall the doors on the indoor blower after

servicingorcleaning/changingthefilters.Donotoperate

theindoor blower without all doors andcovers inplace.

REQUIREMENTS & CODES

WARNING:

The safety information listed below must be

followed during the installation, service, and

operationofthisfurnace.Failuretofollowsafety

recommendations could result in possible

damage to the equipment, serious personal

injury or death.

•This furnace must be installed in accordance with

these instructions, all applicable local building codes

and the current revision of the National Fuel Gas Code

(NFPA54/ANSIZ223.1)ortheNaturalGasandPropane

Installation Code, CAN/CGA B149.1.

•Use only with type of gas approved for this furnace.

Refer to the furnace rating plate.

•Install this furnace only in a location and position as

specified on page 6.

•Provide adequate combustion and ventilation air tothe

furnace space as specified on pages 7 - 14.

•Provideadequateclearancesaroundtheventairintake

terminal as specified in Figure 7 (page 12), Figure 8

(page 12), Figure 9 (page 13), & Figure 10 (page

13).

•Combustion products must be discharged outdoors.

Connect this furnace to an approved vent system only,

as specified on pages 10 - 14.

•Never test for gas leaks with an open flame. Use

a commercially available soap solution to check all

connections. See page 21.

•This furnace is designed to operate with a maximum

external pressure rise of 0.5 inches of water column.

Consult Table 6 (page 33), Table 7 (page 34), &

Table 8 (page 35), and the rating plate for the proper

circulating air flow and temperature rise. It is important

that the duct system be designed to provide the correct

flow rates and external pressure rise. An improperly

designedductsystemcanresultinnuisanceshutdowns,

and comfort or noise issues.

•When supply ducts carry air circulated by the furnace

to areas outside the space containing the furnace, the

return air shall also be handled by duct(s) sealed to

the furnace casing and terminating in the conditioned

space. See pages 14 - 15.

•Agas-firedfurnaceforinstallationinaresidentialgarage

must be installed as specified on page 6.

•This furnace may be used for temporary heating of

buildings or structures under construction. See the

guidelines listed on page 6.

•This furnace is not approved for installation in mobile

homes. Installing this furnace in a mobile home could

cause fire, property damage, and/or personal injury.

•The Commonwealth of Massachusetts requires

compliance with regulation 248 CMR 4.00 and 5.00 for

installationofthrough–the–wallventedgasappliances

as follows:

1.For direct-vent appliances, mechanical-vent heating

appliancesordomestichotwaterequipment,wherethe

bottomoftheventterminalandtheairintakeisinstalled

belowfourfeetabovegradethefollowingrequirements

must be satisfied:

a.) Acarbon monoxide(CO)detector and alarm shall

be placed on each floor level where there are

bedrooms.The detector shall comply with NFPA

720 (2005 Edition) and be mounted in the living

area outside the bedroom(s).

b.) A (CO) detector shall be located in the room that

houses the appliance or equipment and shall:

•Be powered by the same electrical circuit as the

appliance or equipment.Only one service switch

shall power the appliance and the (CO) detector;

•Have battery back-up power;

•Meet ANSI/UL 2034 Standards and comply with

NFPA720(2005Edition);andApprovedandlisted

by a Nationally Recognized Testing Laboratory

as recognized under 527 CMR.

c.) A Product-approved vent terminal must be

used, and if applicable, a product-approved air

intake must be used. Installation shall be in strict

compliance with the manufacturer’s instructions.

Acopyoftheinstallation instructions shallremain

withtheapplianceorequipmentatthecompletion

of the installation.

d.) A metal or plastic identification plate shall be

mounted at the exterior of the building, four feet

directly above the location of vent terminal. The

plate shall be of sufficient size, easily read from

a distance of eight feet away, and read“Gas Vent

Directly Below”.

2.For direct-vent appliances, mechanical-vent heating

appliancesordomestichotwaterequipmentwherethe

bottomoftheventterminalandtheairintakeisinstalled

abovefourfeetabovegradethefollowingrequirements

must be satisfied:

a.) A(CO)detectorandalarmshallbeplacedoneach

floorlevelwheretherearebedrooms.Thedetector

shallcomplywithNFPA720(2005Edition)andbe

mountedinthelivingareaoutsidethebedroom(s).

b.) The (CO) detector shall:

•Belocatedintheroomthathousestheappliance

or equipment;

•Be hard-wired or battery powered or both.

•Shall comply with NFPA 720 (2005 Edition).

c.) A product-approved vent terminal must be

used, and if applicable, a product-approved air

intake must be used. Installation shall be in strict

compliance with the manufacturer’s instructions.

Acopyoftheinstallation instructions shallremain

withtheapplianceorequipmentatthecompletion

of the installation.

Combustion Air Quality

CAUTION:

Combustion air must not be drawn from a

corrosive atmosphere.

To maximize heat exchanger life, the combustion air

must be free of chemicals that can form corrosive acidic

compounds inthecombustiongases.Therecommended

source of combustion air is to use outdoor air. However,

the use of indoor air in most applications is acceptable

except as listed:

•If the furnace is installed in a confined space, it is

required that the necessary combustion air come from

the outdoors by way of attic, crawl space, air duct, or

directopening.ForInstallationsinconfinedspaces,see

page 7 for combustion air requirements.

•Installations in these locations may require outdoor air

for combustion, due to chemical exposures:

Commercial buildings

Buildings with indoor pools

Furnaces installed in laundry rooms

Furnaces installed in hobby or craft rooms

•Exposuretothefollowingsubstancesinthecombustion

air supply may require outdoor air for combustion:

Permanent wave solutions

Chlorinated waxes and cleaners

Chlorine based swimming pool chemicals

Water softening chemicals

De-icing salts or chemicals

Carbon Tetrachloride

Halogen type refrigerants

Cleaning solvents (perchloroethylene)

Printing inks, paint removers, varnishes, etc.

Hydrochloric Acid

Cements and glues

Antistatic fabric softeners

Masonry acid washing materials

Heating Load

Thisfurnaceshouldbesizedtoprovidethedesignheating

load requirement. Heating load estimates can be made

using approved methods available from Air Conditioning

Contractors of America (Manual J); American Society of

Heating, Refrigerating, and Air Conditioning Engineers;

or other approved engineering methods. Excessive

oversizing of the furnace could cause the furnace

and/or vent to fail prematurely. The ductwork should

be appropriately sized to the capacity of the furnace to

ensure its proper airflow rating.

For installations above 2,000 ft., the furnace should have

a sea level input rating large enough that it will meet the

heating load after deration for altitude.

Two-stage furnaces operate at two input rates to better

meet heating loads. The lower heating rate (low fire) is

65% of the high fire rate. The greatest degree of control

overthefurnace canbegained bycontrolling it withatwo

stage thermostat. This allows the thermostat to directly

request either high or low fire. However, it is possible to

operate the furnace using a single stage thermostat. In

this application the furnace control can beset to increase

from low to high fire, based on a timer. See Autostaging

for Single Stage Thermostats (page 26).

Furnaces are properly sized to meet the expected

maximum heating load. But this load occurs infrequently.

So,duringmoremoderateweather,thefurnaceislikelyto

uselowfireaconsiderable partofthetime. Thisisnormal

andhasthebenefitofquieterandmoreefficientoperation.

Installation in a Garage

This Gas-fired furnace may be installed in a residential

garage with the provision that the burners and igniter

are located no less than 18 inches (457mm) above the

floor.Thefurnacemustbelocatedorprotectedto prevent

physical damage by vehicles.

The information listed below is for reference purposes only

and does not necessarily have jurisdiction over local or state

codes. Always consult with local authorities before installing

any gas appliance.

Combustion & Ventilation Air

•US: National Fuel Gas Code (NFGC), Air for Combustion

and Ventilation

•CANADA: Natural Gas and Propane Installation Codes

(NSCNGPIC), Venting Systems and Air Supply for

Appliances

Duct Systems

•USandCANADA:AirConditioningContractorsAssociation

(ACCA) Manual D, Sheet Metal and Air Conditioning

Contractors National Association (SMACNA), orAmerican

Society of Heating, Refrigeration, and Air Conditioning

Engineers (ASHRAE) Fundamentals Handbook

Electrical Connections

•US: National Electrical Code (NEC) ANSI/NFPA 70

•CANADA: Canadian Electrical Code CSA C22.1

Gas Piping & Gas Pipe Pressure Testing

•US: NFGC and National Plumbing Codes

•CANADA: NSCNGPIC

General Installation

•US: Current edition of the NFGC and the NFPA 90B. For

copies,contacttheNationalFireProtectionAssociationInc.,

Batterymarch Park, Quincy, MA 02269; or American Gas

Association, 400 N. Capitol, N.W.,Washington DC 20001

or www.NFPA.org

•CANADA:NSCNGPIC.Foracopy,contactStandardSales,

CSA International, 178 Rexdale Boulevard, Etobicoke

(Toronto), Ontario, M9W 1R3 Canada

Safety

•US:(NFGC)NFPA54–1999/ANSIZ223.1andtheInstallation

Standards,WarmAirHeatingandAirConditioningSystems

ANSI/NFPA 90B.

•CANADA:CAN/CGA-B149.1and.2–M00NationalStandard

of Canada. (NSCNGPIC)

WARNING:

Donotplacecombustiblematerialonoragainst

the furnace cabinet or within 6 inches of the

vent pipe. Do not place combustible materials,

including gasoline or any other flammable

vaporsandliquids,inthevicinityofthefurnace.

Clearances to Combustible Materials

This furnace is Design Certified in the U.S. and Canada

by CSA International for the minimum clearances to

combustible materials. NOTE: The furnace is listed for

installation on combustible or non-combustible flooring.

However, wood is the only combustible flooring allowed

forinstallation.Downflowmodelsmustusetheappropriate

subase kit when installing over a wood floor. To obtain

model number and specific clearance information, refer

to the furnace rating plate, located inside of the furnace

cabinet.

Access for positioning and servicing the unit must be

considered when locating unit. The need to provide

clearance for access to panels or doors may require

clearance distances over and above the requirements.

Allow 24 inches minimum clearance from the front of

theunit.However36inchesisstronglyrecommended.

See Figure 1 for minimum clearance requirements.

†Allow24 in.minimum clearanceforservicing. Recommended

clearance is 36 in.

Figure 1. Minimum Clearances to

Combustible Materials

Operation of Furnace During Construction

CAUTION:

Failuretofollowtheseinstructionswillvoidthe

factory warranty and may significantly reduce

the life or the performance of the furnace, and/

or result in other unsafe conditions. It is the

responsibility of the installing contractor to

insure these provisions are met.

Operating gas furnaces in construction environments

can cause a variety of problems with the furnace. Proper

use of commercial portable space heating equipment

during construction is recommended. This gas furnace

may be used during construction if it is not in violation of

any applicable codes and the following criteria are met:

•The installation must meet all applicable codes. The

furnacemust bepermanentlyinstalledaccordingtothe

instructionssuppliedwiththefurnaceincludingelectrical

supply,gassupply,ductworkandventing.Thefurnace

must be controlled by a thermostat properly installed

according to the instructions supplied with the furnace

andthermostat.Theinstallationmustincludeaproperly

installed filter in the return air system with no by-pass

air.Thefiltermustbeinspectedfrequentlyandreplaced

when necessary.

•Combustion air must be supplied from outside the

structure and located such that dust and gases

from construction activity are not introduced into the

combustion system.

•Provisions must be made to insure that condensate

doesnotfreezeinthefurnaceorcondensatedrainlines

during operation and during idle times; for example,

overnight if turned off. (Condensing furnaces only)

•Before occupying the structure: The filter must be

replaced or cleaned, the duct work must be inspected

andcleanedofanyconstructiondebris,andthefurnace

must be cleaned and/or repaired if found to be dirty,

damaged, or malfunctioning in any way by a qualified

HVAC technician. The furnace shall be inspected and

approved by applicable local authority even if this

requires redundant inspections.

•Serial numbers for furnaces used during construction

must be submitted in writing (fax and email also

acceptable). This information will be used to track the

long-term affects of the use during construction on

furnaces. Proof of this submittal shall be available for

the final inspection of the furnace prior to occupancy.

•This furnace is designed to operate with return air

temperatures in ranges normally found in occupied

residences, including setbacks. Minimum continuous

return temperature must not be below 60° F (15° C).

Occasionally a temporary return temperature of 55° F

(12°C)is acceptable. However, operation with areturn

temperature below 55° F (12° C) is not allowed.

BACK

TOP

FRONT

SIDE

FRONT

SIDE

BACK

TOP

FRONT

CLEARANCES TO COMBUSTIBLE MATERIALS

UPFLOW

APPLICATIONS

DOWNFLOW

APPLICATIONS

HORIZONTAL

APPLICATIONS

Left Side ................. 0 Inches

Top........................... 0 Inches

Right Side............... 0 Inches Front........................

†4Inches

Vent ........................ 0 Inches Back........................ 0 Inches

LEFT SIDE

RIGHT SIDE

VENT

TOP

BOTTOM

LEFT SIDE

RIGHT SIDE

VENT

COMBUSTION AIR & VENTING REQUIREMENTS

WARNING: AVERTISSEMENT:

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below

for each appliance connected to the venting

system being placed into operation could

resultincarbonmonoxidepoisoningordeath.

The following steps shall be followed with

each individual appliance connected to the

venting system being placed in operation,

while all other appliances connected to the

venting system are not in operation:

1.Seal anyunusedopeningsin theventing system.

2.Inspect the venting system for proper size and

horizontal pitch, as required in the National Fuel

GasCode,ANSIZ223.1/NFPA54ortheCSAB149.1,

Natural Gas and Propane Installation Codes and

these instructions. Determine that there is no

blockage or restriction, leakage, corrosion and

other deficiencies which could cause an unsafe

condition.

3.As far as practical, close all building doors and

windowsandalldoorsbetweenthespaceinwhich

theappliance(s)connectedtotheventingsystem

are located and other spaces of the building.

4.Close fireplace dampers.

5.Turn on clothes dryers and any appliance not

connected to the venting system. Turn on any

exhaustfans,suchasrangehoodsandbathroom

exhausts, so they are operating at maximum

speed. Do not operate a summer exhaust fan.

6.Follow the lighting instructions. Place the

appliance being inspected into operation.

Adjust the thermostat so appliance is operating

continuously.

7.Test for spillage from draft hood equipped

appliancesat thedrafthoodrelief opening after5

minutes of main burner operation. Use the flame

of a match or candle.

8.If improper venting is observed during any of the

abovetests,theventingsystemmustbecorrected

in accordance with the National Fuel Gas Code,

ANSIZ223.1/NFPA54and/orCSAB149.1,Natural

Gas and Propane Installation Codes.

9.After it has been determined that each appliance

connected to the venting system properly vents

when tested as outlined above, return doors,

windows, exhaust fans, fireplace dampers and

any other gas-fired burning appliance to their

previous conditions of use.

RISQUE D’EMPOISONNEMENT AU

MONOXYDE DE CARBONED

Le non-respect des consignes suivantes portant

sur chacun des appareils raccordés au système

d’évacuation mis en service pourrait entraîner

l’empoisennement au monoxyde de carbone ou

la mort. Les consignes suivantes doivent être

observées pour chaque appareil raccordé au

système d’évacuation mis en service si les autres

appareils raccordés au système ne sont pas en

service:

1.Sceller toute ouverture non utilisée de la systéme

d’évacuation;

2.S’assurerquelasystémed’évacuationprésentedes

dimensionsetunepentehorizontaleconformesàla

normeANSIZ223.1/NFPA54,intituléeNationalFuel

GasCodeouauxcodesd’installation CSA-B149.1,

ainsi qu’aux présentes instructions. S’assurer

que la systéme d’évacuation n’est pas bloquée,

restreinte, corrodée, qu’elle ne fuit pas et qu’elle

ne présente aucun autre défaut potentiellement

dangereux;

3.Dans la mesure du possible, fermer toutes les

portesetfenêtresdubâtiment,ettouteslesportes

entre la pièce où se trouve l’appareil raccordé à

la systéme d’évacuation et les autres pièces du

bâtiment.

4.Fermer les registres des foyers;

5.Mettre en service les sécheuses et tout autre

appareil qui n’est pas raccordé à la systéme

d’évacuation. Faire fonctionner à régime maximal

toutventilateurd’évacuation, tel que leshottesde

cuisinièreetlesventilateursdesallesdebains.Ne

pas mettre en service les ventilateurs d’été.

6.Respecter les instructions d’allumage. Mettre en

service l’appareil à l’essai. Régler le thermostat

de manière à ce que l’appareil fonctionne sans

interruption;

7.Vérifiers’il yadébordementàl’orifice d’évacuation

du coupe tirage des appareils dotés d’un coupe

tirage 5 minutes après l’allumage du brûleur

principal. Utiliser la flamme d’une allumette ou

d’une chandelle.

8.Si l’on constate, au cours de l’un des essais qui

précèdent,quel’évacuation estdéficiente,corriger

le système d’évacuation conformément à la norm

ANSI Z223.1/NFPA 54, National Fuel Gas Code, et

(ou) aux codes d’installation CSA B149.1.

9.Après avoir déterminé que tous les appareils

raccordés à la systéme d’évacuation évacuent

correctementtelqueprescritci-dessus,rouvrirles

portes et les fenêtres et remettre les ventilateurs

d’évacuation, les registres de foyers et tout

autre appareil fonctionnant au gaz à leur état de

fonctionnement initial.

IMPORTANT INFORMATION

•This furnace must be vented in compliance with

the current revision of the National Fuel Gas Code

(ANSI-Z223.1/NFPA54).Instructionsfordetermining

the adequacy of an installation can be found in the

currentrevisionoftheNFGC(ANSIZ223.1/NFPA54).

Consultlocalcodesforspecialrequirements.These

requirements are for US installations as found in

the NFGC.

•Furnaceinstallationusingmethodsotherthanthose

described in the following sections must comply

with the National Fuel Gas Code (NFGC) and all

applicable local codes.

•Requirements in Canada (B149.1) are structured

differently. In Canada, venting shall conform to the

requirementsofthecurrent(CAN/CGAB149.1or.2)

installation codes. Consult local codes for special

requirements.

•Provisions must be made during the installation

of this furnace that provide an adequate supply of

air for combustion. The combustion air from the

outside needs to be clear of chemicals that can

causecorrosion.Theinletpipeshouldnotbeplaced

near corrosive chemicals such as those listed on

page 5.

WARNING:

Upon completion of the furnace installation,

carefully inspect the entire flue system both

inside and outside the furnace to assure it is

properly sealed. Leaks in the flue system can

result in serious personal injury or death due

to exposure of flue products, including carbon

monoxide.

WARNING:

This furnace must not be vented with other

appliances, even if that appliance is of the

condensing type. Common venting can result

inseverecorrosionof other appliances ortheir

venting and can allow combustion gases to

escape through such appliances or vents. Do

not vent the furnace to a fireplace chimney or

building chase.

Thiscondensingfurnaceiscertifiedforinstallationeitheras

aDirectVent(2-pipe)orConventional(1-pipe)appliance.

Direct Vent appliances draw combustion air from the

outdoors and vent combustion products back outside.

Installationwithairtakenfromaroundthefurnaceisoften

referred to as Conventional installation - i.e. only the vent

(exhaust) pipe is provided.

Another important consideration when selecting one or

two pipe installation is the quality of the Indoor air which

can sometimes be contaminated with various household

chemicals.Thesechemicalscancauseseverecorrosion

in the furnace combustion system. A 2-pipe installation

has the additional advantage that it isolates the system

from the effects of negative pressure in the house.

CAUTION:

Exhaust fans, clothes dryers, fireplaces and

other appliances that force air from the house

to the outdoors cancreate a negative pressure

insidethehouse,resultinginimproperfurnace

operationorunsafeconditionssuchasflameroll

out.It isimperativethat sufficient air exchange

with the outdoors is provided to prevent

depressurization. Additional information about

testing negative pressure problems can be

found in the National Fuel Gas Code.

Air openings ontop of the furnace and openings in closet

doors or walls must never be restricted. If the furnace is

operated without adequate air for combustion, the flame

roll-out switch will open, turning off the gas supply to the

burners.NOTE: This safety device is a manually reset

switch. DO NOT install jumper wires across these

switches to defeat their function or reset a switch

withoutidentifyingandcorrectingthefaultcondition.If

aswitchmust bereplaced,useonlythe correctsizedpart

specified in the Replacement Parts List provided online.

Direct Vent Systems

Direct vent appliances draw combustion air from the

outdoors and vent combustion products back outside,

isolating the entire system from the indoor space. It is

important to make sure that the whole system is sealed

andclearancestocombustiblesaremaintainedregardless

oftheinstallationbeinginaconfinedorunconfinedspace.

Conventional Vent Systems - Confined

Spaces

A confined space is an area with volume less than 50

cubic feet per 1,000 Btuh of the combined input rates of

all appliances drawing combustion air from that space.

Furnaceclosets,smallequipmentroomsandgaragesare

confined spaces. Furnaces installed in a confined space

which supply heated air to areas outside the space must

draw return air from outside the space and must have

the return air ducts tightly sealed to the furnace. Ducts

must have cross - sectional area at least as large as

the free area of their respective openings to the furnace

space. Attics or crawl spaces must connect freely with

the outdoors if they are the source of air for combustion

and ventilation.

The required sizing of these openings is determined by

whetherinsideoroutsideairisusedtosupportcombustion,

the method by which the air is brought to the space, and

Vent or

Chimney

NOTES:

Each opening must be

at least 100 sq. in. or

1 sq. in. per 1,000 Btuh

of total input rating,

whichever isgreater.

Openings must start at

no more than 12 inches

from the top and bottom

of the enclosure.

12” Max.

Water

Heater

See

Notes

Furnace

See

Notes

12” Max.

Ventilation Louvers

at each end of attic

Vent or

Chimney

Attic

Insulation

Air Duct must be

at least 1 sq. in.

per 4,000 Btuh of

total input rating.

Water

Heater

cts must

end above

c insulation.

Fur Air Duct must be

at least 1 sq. in.

per 4,000 Btuh of

total input rating.

12" Max

Total Input Rating MinimumFreeArea RoundDuct

(Btuh)

(Each Opening) Diameter

40,000

10 sq.In 4 inches

60,000

15 sq.In 5 inches

80,000

20 sq.In 5 inches

100,000

25 sq.In 6 inches

120,000

30 sq.In 6 inches

140,000

35 sq.In 7 inches

160,000

40 sq.In 8 inches

by the total input rate of all appliances in the space. In

all cases, the minimum dimension of any combustion air

opening is 3 inches.

Air From Inside

If combustion air is taken from the heated space, the two

openingsmusteachhaveafreeareaofatleastonesquare

inch per 1,000 Btuh of total input of all appliances in the

confined space, but not less than 100 square inches of

free area. See example and Figure 2.

Figure 3. Combustion Air Drawn from a Crawl

Space or Vented Attic

nace

ext

atti

Total Input Rating

(Btuh)

Minimum Free Area

(Each Opening)

Round Duct

Diameter

40,000

100sq.In

12 inches

60,000

100sq.In

12 inches

80,000

100sq.In

12 inches

100,000

100sq.In

12 inches

120,000

120sq.In

13 inches

140,000

140sq.In

14 inches

160,000

160sq.In

15 inches

Figure 2. Combustion Air Drawn from Inside

Outdoor Air from a Crawl Space or Vented

Attic

When the openings can freely exchange air with the

outdoors, each opening shall have a minimum free area

of 1 square inch per 4,000 Btuh of total appliance input.

The openings shall exchange directly, or by ducts, with

the outdoor spaces (crawl or attic) that freely exchange

with the outdoors. See Figure 3.

Outdoor Air Using Vertical Ducts

If combustion air is taken from outdoors through vertical

ducts, the openings and ducts musthaveaminimumfree

area of one square inch per 4,000 Btuh of total appliance

input. See Figure 4.

Figure 4. Combustion Air Drawn from Outside

Through Vertical Ducts

Outdoor Air Using Horizontal Ducts

Ifcombustionairistakenfromoutdoorsthroughhorizontal

ducts,theopenings and ductsmust haveaminimumfree

area of one square inch per 2,000 Btuh of total appliance

input. Ducts must have cross - sectional area at least as

large as the free area of their respective openings to the

furnace space. See Figure 5 (page 10).

Air Directly Through an Exterior Wall

If combustion air is provided directly through an exterior

wall, the two openings must each have free area of at

least one square inch per 4,000 Btuh of total appliance

input. See Figure 6 (page 10).

Vent or

Chimney

Ventilation Louvers

(each end of attic)

Furnace

Outlet

Air Water

Heater

Alternate

Air Inlet

Inlet Air

NOTE: Air openings shall

each have a free area of

not less than one square

inch per 4,000 Btuh of the

total input rating of all

equipment in the enclosure.

Ventilation Louvers For

Unheated Crawl Space

Example:

If the combined input rate of all appliances is less

than or equal to 100,000 Btuh, each opening must

have a free area of at least 100 square inches. If the

combined input rate of all appliances is 120,000 Btuh,

each opening must have a free area of at least 120

square inches.

Figure 5. Combustion Air Drawn from Outside

Through Horizontal Ducts

Alternate Method of Providing Air from Out-

side:

If acceptable under local Codes, itis permittedtoprovide

outside air using one opening (See NFGC). Generally,

confined spaces must have 2 openings in the space for

combustion air. One opening must be within 12 inches of

the ceiling, and the other must be within 12 inches of the

floor.However,analternativemethodrecentlyadoptedby

the NFGC uses one opening within 12 inches of the top

of the space. This method may beused if it is acceptable

to the local codes.

THE FOLLOWING CONDITIONS MUST BE MET:

1.The opening must start within 12” of the top of the

structure and connect with the out of doors through

vertical or horizontal ducts or be ducted to a crawl or

attic space that connects with the out of doors.

2.The opening must have a minimum free area of 1 in2.

per 3,000 Btu per hour of the total input rating of all

equipment located in the enclosure.

3.The free area must not be less than the sum of all the

areas of the vent connectors in the enclosure.

Conventional Vent Systems - Unconfined

Spaces

An unconfined space is an area including all rooms not

separated by doors with a volume greater than 50 cubic

feet per 1,000 Btuh of the combined input rates of all

appliances which draw combustion air from that space.

Ingeneral,afurnaceinstalled inanunconfinedspace will

notrequireoutsideairforcombustion.However,inhomes

built for energy efficiency (low air change rates), it may

be necessary to provide outside air to ensure adequate

combustionandventing,eventhoughthefurnaceislocated

in an unconfined space. See example below.

Figure 6. Combustion Air Drawn from Outside

Through an Exterior Wall

Category IV Venting

WARNING:

Upon completion of the furnace installation,

carefully inspect the entire flue system both

inside and outside the furnace to assure it is

properly sealed. Leaks in the flue system can

result in serious personal injury or death due

to exposure of flue products, including carbon

monoxide.

This furnace is classified as a “Category IV” appliance,

which requires special venting materials and installation

procedures. This section specifi installation requirements

for Conventional(1-pipe) and DirectVent(2-pipe) piping.

For1-pipeinstallations,installventpipingasdescribedin

thissectionandprovideairforcombustionandventilation

according to pages 7 - 10. The length of vent and

combustion air piping for either type of installation are

shown in Table 1 (page 11).

Furnace

Vent or

Chimney

AirDuct

Water

Heater

Air Ducts must be

at least 1 sq. in.

per 2,000 Btuh of

total input rating.

AirDuct

Vent or

Chimney

NOTE:

Each opening to outside

must be at least 1 sq. in. per

4,000 Btuh of total input rating.

See

Note

12"

Max

Water

Heater

Furnace

See

Note

12" Max.

Example:

A space with a water heater rated at 45,000 Btuh

input and a furnace rated at 75,000 Btuh requires a

volume of 6,000 cubic feet [50 x (45 + 75) = 6,000] to

be considered unconfined. If the space has an 8 foot

ceiling, the floor area of the space must be 750 sq. ft.

(6,000 / 8 = 750).

Total Input Rating

(Btuh)

Minimum Free Area

(Each Opening)

Round Duct

Diameter

40,000

20sq.In

5inches

60,000

30sq.In

6inches

80,000

40sq.In

7inches

100,000

50sq.In

8inches

120,000

60sq.In

9inches

140,000

70sq.In

10 inches

160,000

80sq.In

10 inches

Total Input Rating

(Btuh)

Minimum Free Area

(Each Opening)

Round Duct

Diameter

40,000

10sq.In

4inches

60,000

15sq.In

5inches

80,000

20sq.In

5inches

100,000

25sq.In

6inches

120,000

30sq.In

6inches

140,000

35sq.In

7inches

160,000

40sq.In

8inches

CategoryIVappliancesoperatewithpositiveventpressure

and therefore require vent systems which are thoroughly

sealed. They also produce liquid condensate, which is

slightlyacidicandcancauseseverecorrosionofordinary

venting materials. Furnace operation can be adversely

affected by restrictive vent and combustion air piping.

The inducer assembly on this furnace can be rotated to

vent the flue products out of the left or right side of the

furnace. This increases the flexibility of which direction

the vent pipe can exit the furnace.

Vent Pipe Material

Vent and combustion air pipe and fittings must be one of

the following materials in the list and must conform to the

indicated ANSI/ASTM standards. Cement must conform

to ASTM Standard D2564 for PVC and Standard D2235

for ABS. PVC primer must meet standard ASTM F656.

WhenjoiningPVCpipingtoABS,usePVCsolventcement.

(See procedure specified in ASTM Standard D3138)

In Canada, all plastic vent pipes and fittings including

any cement, cleaners, or primers must be certified as a

system toULC S636. However this requirement does not

applytothefinishflangesorpipinginternaltothefurnace.

Vent Pipe Length & Diameter

Inorderforthefurnacetooperateproperly,thecombustion

air and vent piping must not be excessively restrictive.

•The venting system should be designed to have the

minimum number of elbows or turns.

•Transition to the final vent diameter should be done as

close to the furnace outlet as practical.

•Alwaysusethesamesizeoralargerpipeforcombustion

air that is used for the exhaust vent.

Table 1 indicates the maximum allowable pipe length for

a furnace of known input rate, when installed with piping

of selected diameter and number of elbows. To use the

table,thefurnace inputrate, the centerlinelength and the

number of elbows on each pipe must be known.

When estimating the length of vent runs, consideration

must be made to the effect of elbows and other fittings.

Thisisconvenientlyhandled usingtheideaof “equivalent

length”. This means the fittings are assigned a linear

lengththataccountsforthepressuredroptheywillcause.

For example: a 2” diameter, long radius elbow is worth

the equivalent of 2.5 feet of linear run. A 90 degree tee

is worth 7 ft.

The equivalent lengths of tees and various elbows are

listedinTable1.Measurethelinearlengthoftheventrun

and then add in the equivalent length of each fitting. The

total length, including the equivalent fitting lengths, must

be less than the maximum length specified in Table 1.

FURNACE

MODELS

(BTU)

FURNACE

INSTALLATION

SINGLE VENT PIPE LENGTH (FT.)

with 1 long radius elbow*

DUALVENT PIPE LENGTH (ft.)

with 1 long radius elbow on each pipe*

OUTLET

2” Diameter

OUTLET

3” Diameter

INLET / OUTLET

2” Diameter

INLET / OUTLET

3” Diameter

60,000

Upflow

Horizontal

Downflow

80,000

Upflow

Horizontal

Downflow

100,000

Upflow

Horizontal

Downflow

120,000

Upflow

N/A

Horizontal

N/A

Downflow

N/A

*NOTES:

1. Subtract 2.5 ft. for each additional 2 inch long radius elbow, 5 ft. for each additional 2 inch short radius elbow, 3.5 ft.for each additional 3

inch long radius elbow, and 7 ft. for each additional 3 inch short radius elbow. Subtract 5 ft for each 2” tee and 8 ft for each 3” tee.Two 45

degree elbows are equivalent to one 90 degree elbow.

2.This table applies for elevations from sea level to 2,000 ft. For higher elevations, decrease pipe lengths by 8% per 1,000 ft of altitude.

Table 1. Vent Pipe Lengths

Materials

Standards

SCHEDULE 40PVC...............................D1785

PVC-DWV..............................................D2665

SDR-21 & SDR-26.................................D2241

ABS-DWV..............................................D2661

SCHEDULE 40 ABS.............................. F628

FOAM / CELLULAR CORE PVC...........F891

Vent Pipe Installation

CAUTION:

Combustion air must not be drawn from a

corrosive atmosphere.

This furnace has been certified for installation with zero

clearancebetweenventpipingandcombustiblesurfaces.

However,itisgoodpracticetoallowspaceforconvenience

in installation and service.

•In the absence of local codes, the location of any

combustion air inlet relative to any vent terminal must

beatleast8inches.Thisincludesinstallationsinvolving

more than one furnace.

•The quality of outdoor air must also be considered. Be

sure that the combustion air intake is not located near

a source of solvent fumes or other chemicals which

cancausecorrosionofthefurnacecombustionsystem.

(See list of substances on page 5).

•Route piping as directas possiblebetween the furnace

and the outdoors. Horizontal piping from inducer to

the flue pipe must be sloped 1/4” per foot to ensure

condensate flows towards the drain tee or PVC trap.

Longer vent runs require larger pipe diameters. Refer

to the Inducer & Venting Options section on page 17

for additional information.

•IfaDirectVent(2-pipe)system isused,thecombustion

air intake and the vent exhaust must be located in the

same atmospheric pressure zone. This means both

pipesmustexitthebuildingthroughthesameportionof

exterior wall or roof as shown in Figure 36 (page 45).

•Pipingmustbemechanicallysupportedsothatitsweight

does not bear on the furnace. Pipe supports must be

installedaminimumof every5feetalongtheventrunto

ensurenodisplacementafterinstallation.Supportsmay

be at shorter intervals if necessary to ensure that there

are no sagging sections that can trap condensate. It is

recommended to install couplings along the vent pipe,

on either side of the exterior wall (Figure 36). These

couplings may be required by local code.

•Ifbreakableconnectionsarerequiredinthecombustion

air inlet pipe (if present) and exhaust vent piping, then

straight neoprene couplings for 2” or 3” piping with

hose clamps can be used. These couplings can be

orderedthroughyourlocalfurnacedistributor.Toinstall

a coupling:

1.Slide the rubber coupling over the end of the pipe that

is attached to the furnace and secure it with one of the

hose clamps.

2.Slidetheotherendoftherubbercouplingontotheother

pipe from the vent.

3.Secure the coupling with the second hose clamp,

ensuring that the connection is tight and leak free.

Outdoor Terminations - Horizontal Venting

•Vent and combustion air intake terminations shall be

installed as depicted in Figure 7 & Figure 8 and in

accordance with these instructions:

•Ventterminationclearancesmustbeconsistentwiththe

NFGC,ANSI2223.1/NFPA 54and/or the CSA B149.1,

Natural Gas and Propane Installation Code. Table 15

(page 44) lists the necessary distances from the vent

termination to windows and building air intakes.

•Vent and combustion air intake terminations must

be located to ensure proper furnace operation and

conformance to applicable codes. A vent terminal

must be located at least 3 feet above any forced air

inlet located within 10 feet. This does not apply to the

combustionairinletofadirectvent(twopipe)appliance.

In Canada, CSA B149.1, takes precedence over these

instructions. See Table 15.

•All minimum clearances must be maintained to protect

building materials from degradation by flue gases as

shown in Figure 7.

Figure 7. Inlet & Exhaust Pipe Clearances

Figure 8. Vent Locations

Mechanical draft

vent terminal

NOTES:

1. All dimensions shown are

minimum requirements.

2. Exterior vent terminations must

be located at least 12” above the

maximum expected snow level.

Forced air inlet

Direct vent

terminal - more

than 50,000 Btuh

•For optimal performance, vent the furnace through a

wallthatexperiencestheleastexposuretowinterwinds.

•The vent termination shall be located at least 3 ft.

horizontallyfromanyelectricmeter,gasmeter,regulator

andanyreliefequipment.ThesedistancesapplyONLY

to U.S. installations. In Canada, CSA B149.1, takes

precedence over these instructions.

•Do not install the vent terminal such that exhaust is

directed into window wells, stairwells, under decks

or into alcoves or similar recessed areas, and do not

terminate above any public walkways.

•If venting horizontally, a side wall vent kit is available

according to the pipe diameter size of the installation.

For 2 inch pipe use side wall vent kit #904617, and

for 3 inch pipe use kit #904347. Please follow the

instructions provided with the kit.

•Concentric vent termination kits are available for use

with these furnaces. For 2 Inch pipe use kit #904952

andfor 3 inch pipe use kit # 904953. Please follow the

instructions provided with the kit.

•When the vent pipe must exit an exterior wall close to

thegradeorexpectedsnowlevelwhereitisnotpossible

to obtain clearances shown in Figure 7, a riser may be

provided as shown in Figure 9. Insulation is required

to prevent freezing of this section of pipe. See Table 2

(page 14) for vent freezing protection.

Figure 9. Alternate Horizontal Vent Installation

Figure 10. VerticalVentTermination

Outdoor Terminations - Vertical Venting

Terminationspacingrequirementsfromtheroofandfrom

each other are shown in Figure 10 (page 13). The roof

penetration must be properly flashed and waterproofed

with a plumbing roof boot or equivalent flashing. Vent

and combustion air piping may be installed in an existing

chimney which is not in use provided that:

•Both the exhaust vent and air intake run the length of

the chimney.

•The top of the chimney is sealed and weatherproofed.

•The termination clearances shown in Figure 10 are

maintained.

•No other gas fired or fuel-burning equipment is vented

through the chimney.

Vent Freezing Protection

CAUTION:

Whentheventpipeisexposedtotemperatures

below freezing (i.e., when it passes through

unheated spaces, chimneys, etc.) the pipe

must be insulated with 1/2 inch thick sponge

rubber insulation, Armaflex-type insulation or

equivalent.Insulatingpipeisimportanttoavoid

condensate icing.

•Table 2 (page 14) lists the maximum length of flue

pipe that can travel through an unconditioned space or

anexteriorspace.Thetotalventlengthmustnotexceed

the lengths noted in Table 1 (page 11). For Canadian

installations, please refer to the Canadian Installation

Code (CAN/CGA-B149.1 or 2) and/or local codes.

•For extremely cold climates or for conditions of short

furnace cycles (i.e. set back thermostat conditions) the

last18inchesofventpipecanbereduced.Itisacceptable

to reduce from 3” to 2-1/2”, 3” to 2”, or 2” to 1-1/2” if

the total vent length is at least 15 feet in length and the

ventlengthiswithintheparametersspecifiedinTable1.

The restriction should be counted as 3 equivalent feet.

Smaller vent pipes are less susceptible tofreezing, but

must not be excessively restrictive. The length of the 2

inch pipe must not be longer than 18 inches.

•Iffurnaceisinstalledhorizontally,makesurethedrainage

port on the in-line drain assembly is pointed downward

to ensure proper drainage of condensate. See Figure

38 (page 47).

•To prevent debris or creatures from entering the

combustionsystem,aprotectivescreenmaybeinstalled

over the combustion air intake opening. The screens

holesizemustbelargeenoughtopreventairrestriction.

19" Max.

(See Note)

Support

12" Above

Maximum

Expected

Snow Level

Outside

Wall

1/2"

Armaflex

Insulation or

Equivalent

(if required)

NOTE:

Vent Configuration to Provide

12" Minimum height above Snow Level.

Elbows on the combustion air

inlet must be positioned pointing

away from the exhaust vent.

Plumbing Vent Roof Boot

(Both Pipes)

12” Above Maximum

Expected Snow Level

(Both pipes)

Combustion Air

Exhaust Vent

Winter Design

Temperature

Maximum Flue Pipe Length (FEET)

in Unconditioned & Exterior Spaces

Without Insulation

With Insulation*

-20

*NOTE: Insulation thickness greater than 3/8 inch, based on an

R value of 3.5 (ft x F x hr) / (BTU x in.)

Table 2. Vent Protection

Existing Installations

Whenanexisting furnace is removed from avent system

serving other appliances, the existing vent system may

not be sized properly to vent the remaining appliances

(For example: water heater). An improperlysizedventing

systemcanresultintheformationofcondensate,leakage,

or spillage. The existing vent system should be checked

to make sure it is in compliance with NFGC and must be

brought into compliance before installing the furnace.

NOTE: If replacing an existing furnace, it is possible you

will encounter an existing plastic venting system that is

subjecttoaConsumerProductSafetyCommissionrecall.

The pipes involved in the recall are High Temperature

Plastic Vent (HTPV). If your venting system contains

these pipes DO NOT reuse this venting system! This

recall does not apply to other plastic vent pipes, such

as white PVC or CPVC. Check for details on the CPSC

website or call their toll-free number (800) 758-3688.

Condensate Disposal

Themethodfordisposingofcondensatevariesaccording

tolocalcodes.Consultyourlocalcodeorauthorityhaving

jurisdiction.

Each of the condensate drain lines must be J-trapped

using field supplied parts. After the condensate lines are

J-trapped, they may be combined together into a single

runtothedrain.Thedrainlinesmustberouteddownward

to ensure proper drainage from furnace.

Neutralizer kit P/N 902377 is available for use with this

furnace. Please follow the instructions provided with

the kit.

For Installations where there is limited clearance for the

J-Trap(suchasanatticwhereitmaybeinstalledbetween

ceiling joists), either side of the J-Trap can be shortened

to a minimum of 3 Inches. See Figure 11, (page 16).

CIRCULATING AIR REQUIREMENTS

WARNING:

Do not allow combustion products to enter the

circulating air supply. Failure to prevent the

circulation of combustion products into the

living space can create potentially hazardous

conditions including carbon monoxide

poisoning that could result in personal injury

or death.

All return ductwork must be secured to

the furnace with sheet metal screws. For

installations in confined spaces, all return

ductwork must be adequately sealed. When

returnairisprovided throughthe bottom of the

furnace, the joint between the furnace and the

return air plenum must be air tight.

Thesurfacethatthefurnaceismountedonmust

provide sound physical support of the furnace

with no gaps, cracks or sagging between the

furnace and the floor or platform.

Return air and circulating air ductwork must

not be connected to any other heat producing

device such as a fireplace insert,stove,etc.This

may result in fire, explosion, carbon monoxide

poisoning,personalinjury,orpropertydamage.

Plenums & Air Ducts

•Plenums and air ducts must be installed in accordance

withtheStandard fortheInstallationof AirConditioning

and Ventilating Systems (NFPA No. 90A) or the

Standard for the Installation of Warm Air Heating and

Air Conditioning Systems (NFPA No. 90B).

•Table 6 (page 33), Table 7 (page 34), & Table

8 (page 35) contain the maximum airflow and

temperature rise data for fixed and variable speed

motors. If the maximum airflow is 1,600 CFM or more,

itisrecommendedthattwo openings be usedforreturn

aironupflowfurnaces.Downflowfurnacescanonlyuse

one return opening.

•It is recommended that the outlet duct contain a

removable access panel. The opening should be

accessible when the furnace is installed in service and

shall be of a size that smoke or reflected light may be

observed inside the casing to indicate the presence of

leaks in the heat exchanger. The cover for the opening

shall be attached in such a way as to prevent leaks.

•If outside air is used as return air to the furnace for

ventilation or to improve indoor air quality, the system

must be designed so that the return air is not less than

60°F(15°C)duringoperation.Ifacombinationofindoor

and outdoor air is used, the ducts and damper system

must be designed so that the return air supply to the

furnace is equal to the return air supply under normal,

indoor return air applications.

•When a cooling system is installed which uses the

furnace blower to provide airflow over the indoor coil,

the coil must be installed downstream (on the outlet

side) of the furnace or in parallel with the furnace.

•If a cooling system is installed in parallel with the

furnace, a damper must be installed to prevent chilled

airfromenteringthefurnaceandcondensingontheheat

exchanger. If a manually operated damper is installed,

it must be designed so that operation of the furnace is

prevented when the damper is in the cooling position

and operation of the cooling system is prevented when

the damper is in the heating position.

•It is good practice to seal all connections and joints

with industrial grade sealing tape or liquid sealant.

Requirements for sealing ductwork vary from region

to region. Consult with local codes for requirements

specific to your area.

Return Air Connections

•In applications where the supply ducts carry heated

air to areas outside the space where the furnace is

installed,thereturn airmustbedelivered tothefurnace

by duct(s) secured to the furnace casing, running full

size and without interruption. Do not use the back of

the furnace for return air.

•Positionthefurnacewiththereturnairductworkensuring

even alignment of furnace (or coil casing) air opening

and return air duct.NOTE: The ductwork must have an

opening equal to that of the return air opening of the

furnace (or coil casing). See Figure 28 (page 32) for

return air opening size.

Upflow & Horizontal Furnaces

•The return air ductwork may be connected to the left

side, right side, or bottom of the furnace. NOTE: If

using the left or right side of the furnace for return air,

thebottom panel(Figure28)mustnotbe removedfrom

the bottom of the furnace.

WARNING:

The bottom panel of the furnace must be in

place when the furnace is installed with side

return air ducts. Removal of all or part of the

base could cause circulation of combustible

products into the living space and create

potentially hazardous conditions, including

carbon monoxide poisoning that could result

in personal injury or death.

•SideReturnInstallations:Toattachthereturnairductto

theleftorrightsideofthefurnace,punchoutthe4knockouts

from the side of the furnace (Figure 28 (page 32).

Using sharp metal cutters, cut an opening between all

4 knockouts to expose the blower assembly. Position

the return air duct over the opening and secure to the

side with sheet metal screws.

•Bottom Return Installations: If using the bottom of

the furnace for return air, the bottom panel (Figure 28)

must be removed from the bottom of the furnace. See

page 20 for removal instructions. Position the furnace

over the return air duct and secure together with sheet

metalscrews.Makesurethescrewspenetratetheduct

and furnace casing.

Downflow Furnaces

•To attach the return air duct to the downflow furnace,

bend the flanges on the furnace upward 90° with wide

duct pliers. See Figure 28 (page 32) for furnace flange

locations.NOTE: Ifsystem installation includes ACcoil

casing, bend the flanges on the coil casing upward 90°

before attaching the return air duct.

•Secure the return air ductwork to the furnace or coil

casing (if installed) with sheet metal screws. Make

sure the screws penetrate the sheet metal casing and

flanges.

Supply Air Connections

•The supply air must be delivered to the heated space

by duct(s) secured to the furnace or coil box casing,

running full size and without interruption.

•To attach the supply air duct to upflow & horizontal

furnaces, bend the flanges on the furnace upward 90°

with wide duct pliers. See Figure 28 (page 32) for

furnace flange locations. NOTE: If system installation

includes AC coil casing, bend the flanges on the coil

casingupward90° before attachingthesupplyairduct.

•Position the supply air ductwork onto the furnace

ensuring even alignment of furnace air opening and

supply air duct. NOTE: The ductwork must have an

opening equal to that of the supply air opening of the

furnace. See Figure 28 for supply air opening size.

Acoustical Treatments

Damping ducts, flexible vibration isolators, or pleated

media-style filters on the return air inlet of the furnace

may be used to reduce the transmission of equipment

noise eminating from the furnace. These treatments can

produce a quieter installation, particularly in the heated

space. However, they can increase the pressure drop in

theductsystem.Caremustbetakentomaintaintheproper

maximum pressure rise across the furnace, temperature

rise and flow rate. This may mean increasing the duct

sizeand/orreducingtheblowerspeed.Thesetreatments

must be constructed and installed in accordance with

NFPA and SMACNA construction standards. Consult

withlocalcodes for special requirements. Forbestsound

performance,besuretoinstallalltheneededgasketsand

grommets around penetrations into the furnace, such as

for electrical wiring

FURNACE INSTALLATION

*TC series gas furnaces offer a wide range of installation

options, including installation in the upflow or horizontal

positions with either right, left, or upflow return air. The

*TL series gas furnaces may only be installed as a down

flow application.

General Requirements

•Thefurnacemustbeleveledatinstallationandattached

toaproperlyinstalledductsystem.SeeFigure1(page6)

fortherequiredclearancesneededtomovethefurnace

toits installationpoint(hallways,doorways,stairs, etc).

•The furnace must be installed so that all electrical

components are protected from water.

•The furnace must be installed upstream from a

refrigeration system. (If applicable)

•Thecabinetplugmustalwaysbeusedtoclosethehole

in the side of the furnace when rotating the inducer.

•The furnace requires special venting materials and

installation procedures. See pages 7 - 10 for

venting guidelines and specifications.

Upflow Furnaces

WARNING:

The furnace must not be installed directly on

carpeting,tile,oranycombustiblematerialother

than wood flooring.

*TC series gas furnaces are shipped with the bottom

panel installed as shown in Figure 28. If the furnace is

installed with side return air, the bottom panel must not

be removed. If the furnace is installed with bottom return

air,thebottompanelmustberemoved.SeeBottomPanel

Removal on page 20.

Horizontal Furnaces

WARNING:

The furnace must not be installed directly on

carpeting,tile,oranycombustiblematerialother

than wood flooring.

The *TC series gas furnace can be installed horizontally

(Figure 11) in an attic, basement, crawl space or alcove.

It can also be suspended from a ceiling in a basement

or utility room in either a right to left airflow or left to right

airflow as shown in Figure 12.

*TC series furnaces are shipped with the bottom panel

installed. If furnace is installed horizontally, remove the

bottom panel from the furnace before attaching the duct

system. See Bottom Panel Removal section (page 20).

If installing the furnace in an attic, it is required that a drip

pan be placed under the furnace. If the installation is on

a combustible platform (Figure 11), it is recommended

that the drip pan extend at least 12 inches past the top

and front of the furnace.

Ifthefurnacewillbesuspendedfromtheceiling,assemble

asupportframe(Figure12)usingslottedironchanneland

full threaded rod. Fasten the frame together with nuts,

washers, and lockwashers. Secure the support frame to

the rafters with lag bolts.

NOTE: The furnace can also be suspended using steel

strapsaroundeachendofthefurnace.The straps should

be attached to the furnace with sheet metal screws and

to the rafters with bolts.

It is recommended for further reduction of fire hazard

that cement board or sheet metal be placed between the

furnace and the combustible floor and extend 12 inches

beyond the front of the door and top of the furnace.

Figure 11. *TC Horizontally Installed on a Platform

Figure 12. *TC Horizontally Suspended in Attic

Flue pipe vented

to outside

Wood or

non-combustible

platform

Coil Plenum

Combustion Air Condensate

Drain Lines

J-Trap

Height

3” Min.

Nuts (x2)

Lag

Bolt

Washer

and

Lockwasher

Threaded

Rod

Nuts (x2)

Con

Downflow Furnaces

WARNING:

The furnace must not be installed directly on

carpeting,tile,oranycombustiblematerialother

than wood flooring.

WARNING:

Failuretoinstallthedownflowsub-basekitmay

resultinfi ,propertydamageorpersonalinjury.

To install the furnace on combustible flooring, a special

sub-base is required. Downflow sub-base kits are factory

suppliedaccessoriesandarelistedaccordingtothecabinet

letter of the furnace. For ‘B’, ‘C’, and ‘D’ size cabinets use

Kit #904911. Please follow the instructions provided

with the kit.

A downflow sub-base kit is not necessary if the furnace

is installed ona factory orsite-built cased air conditioning

coil. However, the plenum attached to the coil casing

must be installed so that its surfaces are at least 1” from

combustible construction.

Installation on a concrete slab

1.Create an opening in the fl according to the

dimensions in Table 3.

2.Position the plenum and the furnace as shown in

Figure 13.

Inducer & Venting Options

To increase installation flexibility, the inducer assembly

can be rotated to 2 different positions. Each variation has

slightly different requirements with regard to condensate

disposaland,insomecases,theneedto sealthefurnace

cabinet.

Table 3. Cutout Dimensions

crete

oor

Furnace

Sheet

Metal

Plenum

Figure 13. Furnace on a Concrete Slab

IMPORTANT NOTE

The Inducer Assembly must never be positioned to

vent downwards on horizontal installs.

BeforeusingTable4,thenumberofpipes(1-pipeor2-pipe)

connected to the furnace must be known.Findtheproper

furnace style (upflow, horizontal, or downflow) and then

the side that the pipes will exit from the furnace. Finally

select the option that properly matches your installation

type from Figure 37 (page 46), Figure 38 (page 47),

or Figure 39 (page 48).

NOTE: It is important that Direct Vent (2-pipe) systems

maintain an airtight flow path from the air inlet to the flue

gas outlet. The furnace ships from the factory with two

holes in the cabinet for the air inlet and flue gas outlet.

In certain configurations, it is necessary to remove and

relocate a plastic cap in the furnace cabinet. If changing

thepositionoftheairinletandfluegasoutlet,itisrequired

that the previous hole be closed off with the plastic cap to

maintainairtightnessinthefurnace.Theholelocationsfor

*TC & *TL furnaces are shown in Figure 28 (page 32).

Table 4. Vent & Inducer Blower Options

Inducer Assembly Rotation

WARNING:

Inducer rotation must be completed before

the furnace is connected to gas and electric. If

both utilities have been connected, follow the

shutdown procedures printed on the furnace

label and disconnect the electrical supply.

Opening in concrete floor

“A”

“B”

NOTE:

Dimensions shown in Inches.

Conventional (1 Pipe)

Vent

Upflow

Horiz. Right

Horiz. Left

Downflow

Right

Option 1

N/A

Option 9

N/A

Option 5

Option 6

Option 10

Left

Option 2

N/A

Option 11

Direct Vent (2-pipe)

Vent

Upflow

Horiz. Right

Horiz. Left

Downflow

Right

Option 3

N/A

Option 12

N/A

Option 7

Option 8

Option 13

Left

Option 4

N/A

Option 14

Cabinet Size

Dim.“A”

Dim.“B”

16 5/8

19 1/4

20 1/8

19 1/4

23 5/8

19 1/4

CAUTION:

It is good practice to label all wires prior

to disconnection. Wiring errors can cause

improper and dangerous operation.

1.Disconnect the electrical harness from the inducer

assembly.

2.Remove the inducer assembly ground wire from the

blower deck or door.

3.Upfl wFurnaces:Remove4screwssecuringtheinducer

assembly to the header box.

Downflow Furnaces: Remove 3 screws securing the

inducer assembly to the header box.

4.Remove drain tube from inline drain assembly.

5.Rotate the inducer assembly to its new position.

6.Secure the inducer assembly to the header box by

reinstalling the four screws. NOTE: An extra screw is

provided in the parts package with downflow furnaces.

7.Remove the cabinet plug from side of furnace and

reinstall in hole on opposite side of cabinet.

8.Install all condensate drains as shown in Figure 37,

Figure 38, or Figure 39.

9.Reconnect the electrical harness to the inducer

assembly.

10.Reconnect the inducer assembly ground wire to the

blower deck or door.

11.Verifyproperoperationasdetailedonthefurnacelabel.

Pressure Switch Tubing

Figure 14 displays the proper routing of pressure switch

tubing for *TC furnaces. All upflow / horizontal furnaces

have two pairs of switches. One set is connected to the

static tap on the inducer assembly and the other to the

collector box. Downflow (*TL) furnaces require only one

pair of switches to be connected to the inducer’s static

tap. See Figure 15.

Accessories

The components in Figure 16 & Figure 17 (page 19) are

includedintheextrapartsbagsuppliedwiththepurchase

of *TC / *TL furnaces. Depending on your particular

installation, some of these components are optional and

may not be used. Please refer to the descriptions and

accompanying figures when installing these items.

Finish Flange

Thefinishflangemustbeinstalledtoventthecombustion

air pipe through the top of the furnace. NOTE: For proper

installation it is important that the pipe and screw holes in

the finish flange, gasket, and cabinet are aligned.

1.Position flange gasket over hole in the furnace cabinet.

2.Position finish flange on top of the flange gasket.

NOTE: Make sure the flange is properly oriented so

that the FRONT lettering is located near the front of

the furnace as shown in Figure 16.

3.Secure flange and gasket to cabinet with three field

supplied sheet metal screws.

Figure 14. Pressure SwitchTubing for

*TC Upflow / Horizontal Furnaces

Figure 15. Pressure SwitchTubing

for *TL Downflow Furnaces

Rubber Grommets

The 2 1/4” rubber grommet is used to seal the opening

between the furnace cabinet and the 2” PVC vent pipe.

The rubber grommet should be installed in the 3” hole

prior to running the vent pipe out of cabinet. No sealants

are required. See Figure 16.

The 7/8” rubber grommet is used to seal the opening

betweenthefurnacecabinetandthegaspipe.Therubber

grommet should be installed in the 1 5/8” hole prior to

running the gas pipe into the cabinet. No sealants are

required.

The 3/4” rubber grommet is used if venting out the left

side of the cabinet and the drain tube is routed through

the blower deck. Remove the plastic plug from the hole

and install the grommet before routing the drain tube.

Alternate Orientation

1.Installthe2”PVCTeehorizontallyonthe2”ventpipethat

isextendingoutthesideofthecabinet.Permanentlybond

them together using appropriate primer and cement.

Refer to the alternate orientation shown in Figure 17.

2.Install the 2” PVC Elbow on the end of the 2” PVC Tee.

Permanently bond them together using appropriate

primer and cement.

3.InstallthereducerorPVCtrap(ifsupplied)onthebottom

end of the PVC Tee.Permanently bond them together

using appropriate primer and cement.

4.Install the 1/2” x 1/2” hose barb on the 2” PVC reducer.

NOTE:Donot overtighten!Useanadequateamountof

Teflon tape on the threads.Do not use liquid sealants.

5.Verify all connections and joints for tight fit and proper

alignment with other vent pipes.

Figure 16. Finish Flange & Rubber Grommets

PVC Components

IMPORTANT NOTES:

•Before permanently installing these components,

it is recommended you dry-fit them first to ensure

proper fit and alignment with other vent pipes.

•The 2” PVC pipe shown in Figure17 is not provided

in the extra parts bag.

•The PVC Tee & Trap are not included with the *TL

furnaces. However the PVC Trap (P/N 664659) can

be purchased thru your local distributor.

The 2” PVC Tee and Trap shown in Figure 17 are used

whentheinducer is rotatedtovent outthru the leftor right

side of the furnace cabinet.

The 1/2” x 3/4” hose barb can be used to route the

condensate drain to the outside of the cabinet. It must

be installed from inside the cabinet with the threaded

end inserted thru the 1 1/16” hole. See Figure 28 (page

32) for hole location The condensate drain should be

connected to the barbed end. Attach 1” PVC drain line

to the threaded end.

Typical Orientation

1.Install the PVC Tee vertically on the 2” vent pipe that is

extendingoutthesideofthecabinet.Permanentlybond

them together using appropriate primer and cement.

Refer to the typical orientation shown in Figure 17.

2.InstallthereducerorPVCtrap(ifsupplied)onthebottom

end of the PVC Tee.Permanently bond them together

using appropriate primer and cement.

3.Install the 1/2” x 1/2” hose barb on the 2” PVC reducer.

NOTE:Donot overtighten!Useanadequateamountof

Teflon tape on the threads.Do not use liquid sealants.

4.Verify all connections and joints for tight fit and proper

alignment with other vent pipes.

Figure 17. PVC Components

FRONT

FRONT lettering must be

located near front

of furnace

Inlet Air

FinishFlange

Flange

Gasket

ø 2 1/4” Rubber

Grommet

ø 7/8” Rubber

Grommet

Ø 3/4” Rubber

Grommet

2” PVC Pipe from

Inline Drain Assembly

(Not Included)

2” PVCTee

2” x 1/2” PVC

Reducer

1/2” x 1/2”

Hose Barb

1/2” Tubing

(Field Supplied)

PVCTrap

1/2” x 3/4”

Hose Barb 1/2” Tubing Formed

into a Loop (Field Supplied)

Installation of PVC Components (TypicalOrientation)

2” PVC Pipe from

Inline Drain Assembly

(Not Included)

2” PVCTEE

2” PVC ELBOW

(Field Supplied)

2” x 1/2” PVC

Reducer

1/2” x 1/2”

Hose Barb

1/2” Tubing

(Field Supplied)

PVCTrap

1/2” x 3/4”

Hose Barb 1/2” Tubing Formed

into a Loop (Field Supplied)

Installation ofPVC Components (AlternateOrientation)

Condensate Drain Lines

IMPORTANT NOTE

Ifthefurnaceisinstalledinanareawheretemperatures

fallbelowfreezing,specialprecautionsmustbemade

forinsulating condensate drain lines thatdrain to the

outdoors. If condensate freezes in the lines, this will

causeimproperoperationordamagetothefurnace.It

is recommended that all drain lines on the outside of

the residence be wrapped with an industry approved

insulation or material allowed by local code.

The placement of the condensate drain lines will depend

on the configuration selected in Table 4, (page 17). The

drain lines can be routed out the left or right side of the

furnace, but must maintain a downward slope to ensure

proper condensate drainage.

TheJ-trapmayneedtoberotatedtothesidethatmatches

your setup in Figure 37 (page 46), Figure 38 (page 47),

& Figure 39 (page 48). To rotate the J-trap, loosen the

clamp on the drain tube, rotate the J-trap to either side,

and retighten the clamp.

Three general rules apply:

•Eachcondensatedrainlinemustbeseparatelytrapped

using a J-Trap or field supplied loop. After individually

trappingthecondensatelines,itisacceptabletocombine

the drains.

•There must always be a drain attached to the collector

at the outlet of the secondary heat exchanger.

•There must always be a drain at the lowest point of the

ventingsystem.NOTE:Ifusingacondensatepump,the

furnace drain line must be installed above the pumps

water line.

Exceptions and clarifications to the general rules:

•In some cases, the lowest point in the vent system is

where it connects to the inducer (Options 6 & 8). In this

case one drain at this location is sufficient.

•If the vent exits the furnace horizontally, the vent may

be turned vertically with a tee. The drip leg formed by

theteemustincludeadrain(Options1-4,9,11,12,14).

•In certain cases, it is permitted to drain the inducer

back into the top drain of the collector (Options 1, 3,

5, 7, 9, 10, 12, & 13). To ensure proper drainage of

condensate, make sure the drain line does not sag

or becomes twisted. The drain tube supplied with the

furnace may need to be trimmed.

Bottom Panel Removal

Thestepslistedbelowdescribehowtoremovethebottom

panel from the furnace. See Figure 18.

1.Remove the door (1) from the blower compartment.

2.Disconnect the blower motor wiring harness (2) from

the control board.

3.Remove two screws (3) securing the blower assembly

(4) to the furnace.

4.Carefully pull the blower assembly (4) out thru the front

of the furnace.

5.Remove all screws (5) securing bottom panel (6) to

bottom of furnace and front brace (7).

6.Lift up and slide bottom panel (6) out through front of

furnace.

7.Reinstall the blower assembly (4) in reverse order.

Figure 18. Bottom Panel Removal

Alternate Bottom Panel Removal

Ifthebottompanelcannotberemovedusingtheprevious

instructions, the steps below are an alternate method for

removing the bottom panel. See Figure 19.

1.Remove the door (1) from the blower compartment

2.Removeallscrewssecuringthe bottom panel (2)tothe

front brace (3).

3.Remove two screws (4) securing the furnace cabinet

to the blower deck (5).

4.Remove all screws (6) securing the furnace cabinet to

the bottom panel (2).

5.Remove the screw (7) securing the bottom corner of

the furnace cabinet to the front brace (3).

6.Carefullyspreadthebottomcornerofthefurnacecabinet

outwards while sliding thebottom panel (2) outthrough

the front of the furnace.

7.Reassemble the furnace in reverse order.

Figure 19. Alternate Removal Method

This manual suits for next models

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