This Booklet Contains Important Information

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THIS BOOKLET CONTAINSIMPORTANT INFORMATIONINSTALLER:USE THE INFORMATION IN THIS BOOKLETTO INSTALL THE APPLIANCE AND AFFIX THISBOOKLET ADJACENT TO THE APPLIANCEAFTER INSTALLATION.USER:KEEP THIS BOOKLET OF INFORMATION FORFUTURE REFERENCE.SERVICER:USE THE INFORMATION IN THIS BOOKLETTO SERVICE THE APPLIANCE AND AFFIXTHE BOOKLET ADJACENT TO THE APPLI ANCE AFTER SERVICING.“NOTE: Please read all instruction in the manual andretain all manuals for futrue reference. ”WARNING:FIRE OR EXPLOSION HAZARDFailure to follow safety warnings exactly could result in serious injury deathor property damage.—Do not store or use gasoline or other flammable vapors and liquids in thevicinity 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 gassupplier’s instructions. If you cannot reach your gas supplier, call the fire department.— Installation and service must be performed by a qualified installer,service agency or the gas supplier.NOTE: Do not use this furnace if any part has been under water. A flood-damaged furnace is extremely dangerous.Attempts to use the furnace can result in fire or explosion. A qualified service agency should be contactedto inspect the furnace and to replace all gas controls, control system parts, electrical parts that have beenwet or the furnace if deemed necessary.

InstallationˈStart-upˈOperating and Service and Maintenance InstructionsCONTENTSPAGE 3124627ISO 9001:2008These furnaces comply with requirements embodied in theAmerican National Standard / National Standard of Canada ANSIZ21.47·CSA-2.3 Gas Fired Central Furnaces.WARNINGFIRE OR EXPLOSION HAZARDThe furnace is designed and approved for use with Natural Gasand (LP) Propane Gas ONLY. DO NOT BURN ANY LIQUIDFUEL OR SOLID FUEL IN THIS FURNACE.Burning any unapproved fuel will result in damage to the furnaceheat exchanger, which could result in Fire, Personal Injury, and/orProperty Damage.I&O manual1

1. SAFETY CONSIDERATIONSWARNINGFIRE, EXPLOSION, ELECTRICAL SHOCK,AND CARBON MONOXIDE POISONING HAZARD Use only with type of gas approved for this furnace. Refer to thefurnace rating plate.Failure to follow this warning could result in dangerous operation serious injury deathˈor property damage. iceˈmaintenanceˈor use could cause carbon monoxide poisoningˈexplosionˈfireˈelectrical shockˈor other conditions which may causepersonal injury or property damage. Consult a qualified serviceagencyˈlocal gas supplier, or your distributor or branch forinformation or assistance. The qualified service agency mustuse only factory-authorized and listed kits or accessories whenmodifying this product. Install this furnace only in a location and position as specified inthe "Location" section of these instructions.CAUTIONFURNACE RELIABILITY HAZARDImproper installation or misapplication of furnace may requireexcessive servicing or cause premature component failure.Application of this furnace should be indoors with specialattention given to vent sizing and material, gas input rate, airtemperature rise, unit leveling, and unit sizing.CAUTION Provide adequate combustion and ventilation air to the furnacespace as specified in "Air for Combustion and ventilation" section. Combustion products must be discharged outdoors. Connect thisfurnace to an approved vent system only, as specified in the"Venting" section of these instructions. Never test for gas leaks with an open flame. Use a commerciallyavailable soap solution made specifically for the detection of leaksto check all connections, as specified in the "Gas Suppy andPiping" section. Always install furnace to operate within the furnace's intendedtemperature-rise range with a duct system which has an externalstatic pressure within the allowable range, as specified in the"Start-Up, Adjustments, and Safety Check" section. See furnacerating plate. When a furnace is installed so that supply ducts carry aircirculated by the furnace to areas outside the space containing thefurnace, the return air shall also be handled by duct(s) sealed tothe furnace casing and terminating outside the space containingthe furnace. See "Air Ducts" section.CUT HAZARD A gas-fired furnace for installation in a residential garage must beinstalled as specified in the warning box in the "Location" section.Failure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Use careand wear appropriate protective clothing, safety glasses andgloves when handling parts and servicing furnaces. The furnace may be used for construction heat provided that thefurnace installation and operation complies with the first CAUTIONin the LOCATION section of these instructions.Improper installation, adjustment, alteration, service, Maintenance, oruse can cause explosion, fire, electrical shock, or other conditionswhich may cause death, personal injury, or property damage. Consulta qualified installer, service agency, or your distributor or branch forinformation or assistance. The qualified installer or agency must usefactory-authorized kits or accessories when modifying this product.Refer to the individual instructions packaged with the kits or accessories when installing.Follow all safety codes. Wear safety glasses, protective clothing, andwork gloves. Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions include inliterature and attached to the unit. Consult local building codesˈthecurrent editions of the National Fuel Gas Code (NFGC) NFPA54/ANSI Z223.1 and the National Electrical Code (NEC) NFPA 70.In Canada, refer to the current editions of the National Standards ofCanada CAN/CSA-BI49.1 and .2 Natural Gas and Propane Installation Codes, and Canadian Electrical Code CSA C22.1Recognize safety information. This is the safety-alert symbol . Whenyou see this symbol on the unit and in instructions or manuals, be alertto the potential for personal injury. Understand the signal wordsDANGER, WARNING, and CAUTION. These words are used with thesafety-alert symbol.I&O manual2DANGER identifies the most serious hazards which will result insevere personal injury or death. WARNING signifies hazards whichcould result in personal injury or death. CAUTION is used to identifyunsafe practices which may result in minor personal injury or productand property damage. NOTE is used to highlight suggestions whichwill result in enhanced Installation, reliability, or operation. These multipoise Gas-Fired Furnaces are CSA (formerly A.G.A.and C.G.A). design-certified for use with natural and propanegases (see furnace rating plate) and for installation in alcovesˈattics, basements, closets, utility rooms, crawlspaces, andgarages. The furnace is factory-shipped for use with natural gas.A CSA listed accessory gas conversion kit is required to convertfurnace for use with propane gas. The furnaces must be kept free and clear of insulating materials.Inspect surrounding area to ensure insulation material is in safedistance when installing furnaces or adding insulation materials.Insulation materials may be combustible.See Fig. 2 for required clearances to combustible construction.Maintain a 1 in. (25 mm) clearance from combustible materials tosupply air ductwork for a distance of 36 in. (914 mm) horizontallyfrom the furnace. See NFPA 90B or local code for further requirements. These furnaces SHALL NOT be installed directly on carpeting,tile, or any other combustible material other than wood flooring. Indownflow installations, factory accessory floor base MUST beused when installed on combustible materials and wood flooring.Special base is not required when this furnace is installed onmanufacturer's Coil Assembly .

See Fig Instruction of lighting/ shutdown operation. Should thegas supply fail to shut off or if overheating occurs, shut off thegas valve to the furnace before shutting of the electrical supply. Before heating season begins, exame the furnace to determinethat:a. All flue gas carrying areas external to the furnace (i.e.chimney, vent connector) are clear and free of obstructions.b. The vent connector is in place, slopes upward and isphysically sound without holes or exccessive corrosion.c. The return-air duct connection(s) is physically cound, issealed to the furnace casing, and terminates outside the spacecontaining the furnace.d. The physical support of the furnace is sound without sagging,cracks, gaps, etc around the base so as to provide a sealbetween the support and the base.e. There are no obvious sign of deterioration of the furnace.f. The burner flames are in good adjustment (by comparison withpictorial sketches of the main burner flame (see Fig 31). Furnace operation needs air for combustion and ventilation.Do not block or obstruct air openings on furnace or spacingarroud furnace required for supplying sufficient combustion airand ventilation.Cover old lighting instructions with this label. Note: Rating plate must be left visible for future reference.FOR YOUR SAFETY READ BEFORE OPERATINGWARNINGIf you do not follow these instructions exactly, a fire or explosion may resultcausing property damage, personal injury or loss of life.A. This appliance does not have a pilot. it is equipped with anignition device which automatically lights the burner.Do not try to light the burner by hand.B. BEFORE OPERATING smell all around the appliancearea for gas. Be sure to smell next to the floor becausesome gas ls heavier than air and will settle on the floor.FOR YOUR SAFETY“WHAT TO DO IF YOU SMELL GAS” Do not try to light any appliance. Do not touch any electrical switch; do not useany phone in your building. Immediately call your gas supplier from aneighbors phone. Follow the gas suppliersInstructions. If you cannot reach your gas supplier, call thefire department.C. Use only your hand to turn the gas control switch. Never usetools. If the switch will not turn by hand, don’t try to repair it;call a qualified service technician. Force or attempted repairmay result in a fire or explosion.D. Do not use this appliance if any part has been under water.Immediately call a qualified service technician to inspect theappliance and to replace any part of the control system andany gas control which has been under water.OPERATING INSTRUCTIONS1. STOP! Read the safety information above on thislabel.2. Set the thermostat to lowest setting.3. Turn off all electric power to the appliance.4. This appliance is equipped with an ignition devicewhich automatically lights the burner. Do not try tolight the burner by hand.SWITCH SHOWN INTHE “OFF” POSITION5. Remove control access panel.6. Wait five (5) minutes to clear out any gas. if youthen smell gas, STOP! Follow “B” in the safetyinformation above on this label. If you don’t smellgas, go to the next step.7. Push gas control switch to “ON”.NOTE: Do not force.8. Replace control access panel.9.Turn on all electric power to the appliance.10.Set thermostat to desired setting11.If the appliance will not operate, follow instructions“To Turn Off Gas To Appliance” and call yourservice technician or gas supplier.TO TURN OFF GAS TO APPLIANCE1. Set the thermostat to lowest setting.2. Turn off all electric power to the appliance ifservice is to be performed.3. Remove control access panel.4. Push gas control to “OFF”. Do not force.5. Replace control access panel.I&O manual3

m)2-1/8”(54mm)7-7/16”(189mm)3-1/8”(79mm)' 19-1/2”(495mm)DIA.LEFT VENT OUTLET4-3/4”(120.7mm)DIA.RIGHT HAND GAS ENTRY1-1/2”(38mm)11-3/16”(284mm)DIA.JUNCTION BOX LOCATION7/8”(22mm)DIA.LEFT HAND GAS ENTRY1-1/2”(38mm)24-1/2”(622mm)DIA.JUNCTION BOX DIA.THERMOSTATWIRE ENTRY7/8”(22mm)14”(355mm)RIGHT SIDE RETURN AIR 28-1/2”(724mm)LEFT SIDE RETURN -13/16”(580mm)24-13/16”(630mm)24”(610mm)( Fig. 1 - Dimensional DrawingTable 1 - DimensionsFURNACE SIZEI&O manual4ACABINET WIDTHIN. (MM)DSUPPLYAIR WIDTHIN. (MM)ERETURNAIR WIDTHIN. (MM)SHIP WT 2)23(584)22-27/32(580)176WIRE ENTRY7/8”(22mm)

2. INTRODUCTIONThis series 4-way multipoise Category I fan-assisted furnace is CSAdesign-certified. A Category I fan-assisted furnace is an applianceequipped with an integral mechanical means to either draw or forceproducts of combustion through the combustion chamber and/or heatexchanger. The furnace is factory-shipped for use with natural gas.This furnace is not approved for installation in mobile homes,recreational vehicles, or outdoors. This furnace is designed forminimum continuous return-air temperature of 60 F (16 C) db orintermittent operation down to 55 F (13 C)db such as when used withWARNINGAVERTISSEMENTa night setback thermostat. Return-air temperature must not exceed85 F (29 C) db. Failure to follow these return-air temperature limitsmay affect reliability of heat exchangers, motors, and controls. (SeeFig. 3).For accessory installation details, refer to the applicable instructionliterature.NOTE: Remove all shipping brackets and materials beforeoperating the furnace.INSTALLATIONMINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTIONDISTANCE MINIMALE EN POUCES AUX CONSTRUCTIONS COMBUSTIBLESUne réglage, une modification, un reparation, unenretien ou une installation incorrect puet entraînerdes blessures graves ou la mort.Suivre les instructions et les consignes qui figurentdans la notice d'utilisation qui accompagne cegénérateur d'air chaud. L'installation et I'entretiendoivent être effecturés par un réparateur qualifiéou par Ie foumisseur de gaz.CAUTIONMISE EN GARDECheck entire gas assembly for leaks after lightingthis appliance.Vérifier tous les éléments à gaz pour rechercherles fuites après avoir allumé cet appareil.INSTALLATION1.This fumace must be installed in accordance withthe manufacturer's instructions and local codes. Inthe absence of local codes, follow the National FuelGas Code ANSI Z223.1/ NFPA54 or CSA B-149. 1Gas Installation Code.Ce foumaise á air chaud doit être installéconforrnément aux instructions du fabricant et auxcodes Iocaux. En I’absence de ces demiers, Ianorme. ANSI Z223.1/NFPA54 intitulée National FuelGas Code ou Ies code d'installation CSAB149.1.2.This fumace must be installed so there areprovisions for combustion and ventilation air. Seemanufacturer's installation information provided withthis appliance.Ce foumaise á air chaud doit être installé demanière à ce qu'iIyait ait suffisamment d'air deventilation et combustion. Consulter Ies instructionsd’installation du fabricant foumies avec cet appareil.OPERATIONAn accessory kit, supplied by themanufacturer, shall be used to convert topropane gas use or may be required forsome natural gas applications.This fumace is for indoor installation in abuilding constructed on site.This fumace may be installed on combustibleflooring in alcove or closet at minimumclearance as indicated by the diagram fromcombustible material.This furnace may be used with a Type B-1Vent and may be vented in common withother gas fired appliances. Utiliser une trousse de conversion, foumiepar Ie fabricant, pour passer au gaz propaneou pour certaines installations au gaz naturel.Cette foumaise est prévue pour êtreinstallée dans un bâtiment construit surplace.Cette foumaise peut être installée sur unpIanctler combustible dans une aIdôve oudans un garde-robe en respedant Ieminimum d'espace libre des matériauxcombustibles, tel qu'indiqué sur Iediagramme.Cette foumaise peut être utilisée avec unoondutt d'évacuation de Type B-1 ouconnectée au conduit ommun d’autresappareils à gaz.This fumace is approved for UPFLOW,DOWNFLOW and HORIZONTALinstallations.Cette foumaise est approuvée pourI’installation HORIZONTALE et Ia circulationd 'air VERS LE HAUT et VERS LE BAS.Clearance arrowsdo not change withfumaceorientation.1’’AR BACRIE KRE1’’ 1’’(25.4mm)TOP/PLENUMDESSUS/CHAMBRE D’AIRImproper adjustment, alteration, service,maintenance, or installation can cause seriousinjury or death.Read and follow instructions and precautions inUser's Information Manual provided with thisfurnace. Installation and service must be performedby a qualified service agency or the gas supplier.Les fléches de dégagement ne change pasavec I 'orientation deIa foumaise.EACRN ISEFU RNAUFOTONFR ANTAVESID ESTCO1’’DE SSI TECOLÈ SERNT VIRE CETIENFAV RONAN TT 3’’(76.2mBOTTOMDESSOUSFIRE, EXPLOSION, ASPHYXIATION HAZARD RISQUED’INCENDIE, D’EXPLOSION ET ASPHYXIEm) 24’’(609.6mm)MIØ0’’†Clearance in inchesDégagement (po).Vent Clearance to combustibles:For Single Wall vents 6 inches (6 po),For Type B-1 vent type 1 inch (1 po).Dégagement de I'évent avec combustibles:Pour oondurt d'évacuation à paroi simple 6 po (6inches).Pour oonduit d'évacuation de Type B-1 1 PO (1inch).MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTIONDOWNFLOW POSITIONS:† Installation on non-combustible floors only.For Installation on combustible flooring only when installed on sub-base provided by installeror manufacturer’s (Part number: 202882290006)Ø 18 inches front dearanre required for alcove.HORIZONTAL INSTALLATION IN ATTIC* Indicates supply or return sides when furnace is in the horizontal position. Line contact onlypermissible between lines formed by intersections of the Top and two Sides of the furnacejacket, and building joists, studs or framing.A special base is required (refer to “Horizontal Installation” section in Manual)DÉGAGEMENT MINIMUM EN POUCES AVEC ÉLÉMENTSDE CONSTRUCTION COMBUSTIBLES† POUR LA POSITION COURANT DESCENDANT:This fumace is equipped with manual reset limitswich(es) in bumer compartment to protect againstoverheat conditions that can result from inadequatecombustion air supply or blocked vent conditions,1. Do not bypass limit switches.2. If a limit opens, call a quallified serviceman tocorrect the condition and reset limit switch.Pour I'installation sur pIancher non combustible seuIement.Ø Pour I'installation sur un pIancher combustible seulement quand on utilise Ia base spéciale*Dans une aloôve, on doit maintenir un dégagement à I'avant de 18 po (450mm).La poistion indiquée conceme Ie côté d' entrée ou de retour quand la foumaise est dans laposition horizontale.Le contact n'est permis qu'entre Ies lignes formées par les intersections du dessus et desdeux côtés de Ia cherrise de Ia foumaise et Ies soIives, montant sous cadre de charpente.Fig. 2 - Clearances to CombustiblesI&O manual5

3.5 Acoustical Lining and Fibrous Glass Duct3. CODES AND STANDARDSFollow all national and local codes and standards in addition to theseinstructions. The installation must comply with regulations of theserving gas supplier, local building, heating, plumbing, and othercodes. In absence of local codes, the installation must comply withthe national codes listed below and all authorities having jurisdiction.In the United States and Canada, follow all codes and standards forthe following:3.1 Safety US and CANADA: current edition of SMACNA and NFPA 90B astested by UL Standard 181 for Class I Rigid Air Ducts3.6 Gas Piping and Gas Pipe Pressure Testing US: NFPA 54/ANSI Z223.1-2006 Chapters 5,6, 7, and 8 andNational Plumbing Codes. CANADA: CAN/CSA-B149.1-05 Parts 4, 5, and 6 andAppendices A, B, E, and H. USA: National Fuel Gas Code (NFGC) NFPA 54-2006/ANSIZ223.1-2006 and the Installation Standards, Warm Air Heatingand Air Conditioning Systems ANSI/NFPA 90B3.7 Electrical Connections CANADA: CSA B149.1-05 National Standard of Canada NaturalGas and Propane Installation Codes (CAN/CSA-B149.1-05) CANADA: Canadian Electrical Code CSA C22.I. US: National Electrical Code (NEC) ANSI/NFPA 70-2008.3.8 Electrical power supplyVoltage: ANSI C84.1-2006 (104-127 volt)OUTLETAIR3.9 Venting US: NFGC NFPA 54/ANSI Z223.1-2006 ; chapters 12 and 13. CANADA: CAN/CSA-B149.1-05 Part 8 and Appendix C.FRONTMax 850F/290CMin 60 F/16 C004. ELECTROSTATIC DISCHARGE (ESD)PRECAUTIONS PROCEDURECAUTIONFig. 3 - Return Air Temperature3.2 General Installation US: Current edition of the NFGC and the NFPA 90B. For copies,contact the National Fire Protection Association Inc.,Batterymarch Park, Quincy, MA 02269; (www.NFPA.org) or foronly the NFGC, contact the American Gas Association, 400 N.Capitol Street, N.W., Washington, DC 20001 (www.AGA.org). CANADA: CAN/CSA-B149.1-05. For a copy, contact StandardSales, CSA International, 178 Rexdale Boulevard, Etobicoke(Toronto), Ontario, M9W 1R3 Canada.3.3 Combustion and Ventilation Air US: Section 9.3 of the NFGC, NFPA 54/ANSI Z223.1-2006 Air forCombustion and Ventilation. CANADA: Part 8 ofCAN/CSA-B149.1-05, Venting Systems andAir Supply for Appliances.3.4 Duct Systems US and CANADA: Air Conditioning Contractors Association(ACCA) Manual D, Sheet Metal and Air Conditioning ContractorsNational Association (SMACNA), or American Society of Heating,Refrigeration, and Air Conditioning Engineers (ASHRAE) 2001Fundamentals Handbook Chapter 34 or 2000 HVAC Systemsand Equipment Handbook Chapters 9 and 16.FURNACE RELIABILITY HAZARDImproper installation or service of furnace may cause premature furnace component failure.Electrostatic discharge can affect electronic components.Follow the Electrostatic Discharge Precautions Procedurelisted below during furnace installation and servicing to protectthe furnace electronic control. Precautions will prevent electrostatic discharges from personnel and hand tools which are heldduring the procedure. These precautions will help to avoidexposing the control to electrostatic discharge by putting thefurnace, the control, and the person at the same electrostaticpotential. Disconnect all power to the furnace. Multiple disconnects mayberequired. DO NOT TOUCH THE CONTROL OR ANY WIRECONNECTED TO THE CONTROL PRIOR TO DISCHARGINGYOUR BODY'S ELECTROSTATIC CHARGE TO GROUND. Firmly touch the clean, unpainted, metal surface of the furnacechassis which is close to the control.Tools held in a person's handduring grounding will be satisfactorily discharged. After touching the chassis, you may proceed to service the controlor connecting wires as long as you do nothing to recharge yourbody with static electricity (for example; DO NOT move or shuffleyour feet, do not touch ungrounded objects, etc.). If you touch ungrounded objects (and recharge your body withstatic electricity), firmly touch a clean, unpainted metal surface ofthe furnace again before touching control or wires, Use this procedure for installed and un installed (ungrounded)furnaces.I&O manual6

Before removing a new control from its container, discharge yourbody's electrostatic charge to ground to protect the control fromdamage. If the control is to be installed in a furnace, follow items 1through 4 before bringing the control or yourself in contact with thefurnace. Put all used and new controls into containers beforetouching ungrounded objects. An ESD service kit (available from commercial sources) may alsobe used to prevent ESD damage.If air is exposed to the following substances, it should not be used forcombustion air, and outdoor air may be required for combustion: Permanent wave solutions Chlorinated waxes and cleaners Chlorine based swimming pool chemicals Water softening chemicals5. LOCATION De-icing salts or chemicals5.1 General Halogen type refrigerantsThis multipoise furnace is shipped in packaged configuration. Someassembly and modifications are required when used in any of thefour applications . This furnace must: Cleaning solvents (such as perchloroethylene) Be installed so the electrical components are protected fromwater. Hydrochloric acid Carbon tetrachloride Not be installed directly on any combustible material other thanwood flooring (refer to SAFETY CONSIDERATIONS). Downflow installation and horizontal installation in atttic haveadditional requirements. See Section 6 Installation. Be located as close to the chimney or vent and attached to an airdistribution system. Refer to Air Ducts section. Be provided ample space for servicing and cleaning. Alwayscomply with minimum fire protection clearances shown on thefurnace clearance to combustible label. Printing inks, paint removers, varnishes, etc. Cements and glues Antistatic fabric softeners for clothes dryers Masonry acid washing materialsAll fuel-burning equipment must be supplied with air for fuelcombustion. Sufficient air must be provided to avoid negativepressure in the equipment room or space. A positive seal must bemade between the furnace cabinet and the return-air duct to preventpulling air from the burner area and from draft safeguard opening.Also see Section 6.4.The following types of furnace installations may require OUTDOORAIR for combustion due to chemical exposures: Commercial buildings Buildings with indoor pools Laundry rooms Hobby or craft rooms, and Chemical storage areas18-IN. (457.2 mm)MINIMUM TO BURNERSFig. 4 - Installation in a GarageWARNINGWARNINGCARBON MONOXIDE POISONING HAZARDFIRE, INJURY OR DEATH HAZARDFailure to follow this warning could result in personal injury ordeath, and unit component damage.Corrosive or contaminated air may cause failure of partscontaining flue gas, which could leak into the living space. Airfor combustion must not be contaminated by halogencompounds, which include fluoride, chloride, bromide, andiodide. These elements can corrode heat exchangers andshorten furnace life. Air contaminants are found in aerosolsprays, detergents, bleaches, cleaning solvents, salts, airfresheners, and other household products. Do not installfurnace in a corrosive or contaminated atmosphere. Make sureall combustion and circulating air requirements are met, inaddition to all local codes and ordinances.Failure to follow this warning could result in personal injury,death, and/or property damage.When the furnace is installed in a residential garage, theburners and ignition sources must be located at least 18 inches(457 mm) above the floor. The furnace must be located orprotected to avoid damage by vehicles. When the furnace isinstalled in a public garage, airplane hangar, or other buildinghaving a hazardous atmosphere, the furnace must be installedin accordance with the NFGC or CAN/CSA - B149 .1-05. (SeeFig. 4).I&O manual7

Side Return Air InletCAUTIONPERSONAL INJURY AND/ORHAZARDPROPERTY DAMAGEImproper use or installation of this furnace may cause premature furnace component failure.This gas furnace may be used for heating buildings underconstruction provided that:- The furnace is permanently installed with all electrical wiring,piping, venting and ducting installed according to these installation instructions. A return air duct is provided, sealed to thefurnace casing, and terminated outside the space containingthe furnace. This prevents a negative pressure condition ascreated by the circulating air blower, causing a flame rolloutand/or drawing combustion products into the structure.- The furnace is controlled by a thermostat. It may not be "hotwired" to provide heat continuously to the structure withoutthermostatic control.-Clean outside air is provided for combustion. This is tominimize the corrosive effects of adhesives, sealers and otherconstruction materials. It also prevents the entrainment ofdrywall dust into combustion air, which can cause fouling andplugging of furnace components.- The temperature of the return air to the furnace is maintainedbetween 60 F (16 C) and 85 F (29 C), with no evening setbackor shutdown. The use of the furnace while the structure is underconstruction is deemed to be intermittent operation per ourinstallation instructions.- The air temperature rise is within the rated rise range on thefurnace rating plate, and the gas input rate has been set to thenameplate value.- The filters used to clean the circulating air during the construction process must be either changed or thoroughly cleanedprior to occupancy.- The furnace, ductwork and filters are cleaned as necessary toremove drywall dust and construction debris from all HVACsystem components after construction is completed.- Verify proper furnace operating conditions including ignition,gas input rate, air temperature rise, and venting according tothese installation instructions.6.1 Upflow InstallationBottom Return Air InletThese furnaces are shipped with bottom closure panel installed inbottom return-air opening. Remove and discard this panel whenbottom return air is used. To remove bottom closure panel, performthe following:1. Tilt or raise furnace and remove the screw holding bottomfiller panel. (See Fig. 5.)2. Remove bottom closure panel.BOTTOM CLOSURE PANELSCREWFig. 5 - Removing Bottom Closure Panel8NOTE: For downflow applications, this furnace is approved for useon combustible flooring when anyone of the following 3 accessoriesare used: Special Base Cased Coil Assembly Coil Box1.2.3.4.Determine application being installed from Table 2.Construct hole in floor per Table 2 and Fig. 6.Construct plenum to dimensions specified in Table 2 and Fig. 6.If down flow subbase is used, install as shown in Fig. 7. If CoilAssembly or Coil Box is used, install as shown in Fig. 8.NOTE: It is recommended that the supply-air duct flanges becompletely folded over or removed from furnace when installing thefurnace on a factory-supplied cased coil or coil box.To remove the supply-air duct flange, use wide duct pliers or handseamers to bend flange Be careful of sharp edges.Bottom Return Air Inlet

this booklet contains important information installer: use the information in this booklet to install the appliance and affix this booklet adjacent to the appliance after installation. user: keep this booklet of information for future reference.

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