Kenmore N8MSL0701408A1, N8MSN0701408A1, N8MSN0451412A1, N8MSL1352116A1, N8MSN1352116A1 Installation Instructions Manual

...

These instructions must be read and understood completely before attempting installation.

Safety Labeling and Signal Words

DANGER, WARNING, CAUTION, and NOTE Signal Words in Manuals

The signal words DANGER, WARNING, CAUTION, and NOTE The signal word WARNING is used throughout this manual inthe are used to identify levels of hazard seriousness. The signal word following manner:

DANGER isonly used on product labels to signify an immediate hazard. The signal words WARNING, CAUTION, and NOTE will

be used on product labels and throughout this manual and other The signal word CAUTION is used throughout this manual in the manual that may apply to the product, following manner:

DANGER - Immediate hazards which will result in severe person-

at injury or death. WARNING - Hazards or unsafe practices which could result in

severe personal injury or death. CAUTION - Hazards or unsafe practices which may result in or product labels.

minor personal injury or product or property damage.

NOTE - Used to highlight suggestions which wilt result in en- z_ Safety-alert symbol hanced installation, reliability, or operation. When you see this symbol on the unit and in instructions or manu-

TABLE OF CONTENTS

DIMENSIONS ............................................... 3

SAFETY CONSIDERATIONS .................................. 3

INTRODUCTION ............................................ 4

CODES AND STANDARDS ................................... 5

SAFETY ................................................ 5

GENERAL INSTALLATION ................................ 5

COMBUSTION AND VENTILATION AIR ..................... 5

DUCT SYSTEMS ........................................ 5

ACOUSTICAL LINING AND FIBROUS GLASS DUCT ......... 5

GAS PIPING AND GAS PIPE PRESSURE TESTING .......... 5

ELECTRICAL CONNECTIONS ............................ 5

VENTING .............................................. 5

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ........... 5

LOCATION ................................................. 6

AIR FOR COMBUSTION AND VENTILATION .................... 7

INSTALLATION .............................................. 10

UPFLOW INSTALLATION ................................. 10

DOWNFLOW INSTALLATION ............................. 11

FILTER ARRANGEMENT ................................. 12

AIR DUCTS ............................................. 13

AIR DELIVERY - CFM .................................... 14

ELECTRICAL CONNECTIONS ............................ 20

115-V WIRING .......................................... 20

J-BOX RELOCATION .................................... 20

ELECTRICAL CONNECTION TO J-BOX .................... 20

ELECTRICAL DATA ...................................... 21

24-V WIRING ........................................... 22

ACCESSORIES ......................................... 22

VENTING .................................................. 23

GENERAL VENTING REQUIREMENTS ..................... 23

MASONRY CHIMNEY REQUIREMENTS .................... 24

APPLIANCE APPLICATION REQUIREMENTS ............... 26

ADDITIONAL VENTING REQUIREMENTS .................. 26

SIDEWALL VENTING .................................... 27

START-UP, ADJUSTMENT, AND SAFETY CHECK ............... 30

GENERAL .............................................. 30

START-UP PROCEDURES ............................... 30

ADJUSTMENTS ......................................... 31

SPEED SELECTION ..................................... 32

CHECK SAFETY CONTROLS ............................. 33

CHECKLIST ............................................ 34

ORIFICE SIZE AND MANIFOLD PRESSURE ................ 35

SERVICE AND MAINTENANCE PROCEDURES ................. 39

CARE AND MAINTENANCE ................................... 39

SEQUENCE OF OPERATION ................................. 43

WIRING DIAGRAM .......................................... 44

TROUBLESHOOTING GUIDE ................................. 45

Signal Words on Product Labeling

Signal words are used in combination with colors and/or pictures

als, be alert to the potential for personal injury.

Use of the AHRI Certified TM Mark indicates a manufacturer's participation in the program.

For verification of certification for individual

IS09001

PERSONAL INJURY, AND/OR PROPERTY

DAMAGE HAZARD Failure to carefully read and follow this warning could

result in equipment malfunction, property damage,

3ersonal injury and/or death.

Installation or repairs made by unqualified persons could result in equipment malfunction, property

damage, personal injury and/or death.

The information contained in this manual is intended for

use by a qualified service technician familiar with safety

3rocedures and equipped with proper tools and test

instruments. Installation must conform with local building codes and

with the Natural Fuel Gas Code (NFCG) NFPA 54/ANSI Z223.1, and National standards of Canada

CAN/CSA-B149.1 and .2 Natural Gas and Propane Installation Codes.

INSTALLER: Affixthese instructions on or adjacent tothe furnace. CONSUMER: Retain these instructions for future reference.

products, go to www.ahridirectory.org .

Portionsofthe text and tables are reprintedfrom NFPA54/ANSI Z223.t -20096), with permission of National FireProtectionAssociation, Quincy, MA02269 and American Gas Association,Washing-

ton, DC 20001. This reprinted material is not the complete and official position of the NFPAor ANSI, onthe referencedsubiect, which is represented only by the standard in itsentirety,

PrintedinU.S.A. 441 01 1402 02 May. 2012

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NOTES:

1. Two additional 7/8-in. (22 mm) diameter holes are located in the top plate.

2. Minimum return-air openings at furnace, based on metal duct. If flex duct is used, see flex duct manufacturer's recommendations for equivalent diameters.

a. For 800 CFM-16-in. (406 mm) round or 14 1/2 x 12-in. (368 x 305 mm) rectangle. b. For 1200 CFM-20-in. (508 mm) round or 14 1/2 x 19 1/2-in. (368 x 495 mm) rectangle. c. For 1600 CFM-22-in. (559 mm) round or 14 1/2 x 22 1/16-in. (368 x 560mm) rectangle. d. For airflow requirements above 1800 CFM, see Air Delivery table in Product Data literature for specific use of single side inlets. The use of both side inlets, a

combination of 1 side and the bottom, or the bottom only will ensure adequate return air openings for airflow requirements above 1800 CFM.

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Table 1--Dimensions - In. (mm)

OUTLET

FURNACE SIZE

N8MSN & N8MSL

0451408 0451412 0701408 0701412 0701716

0901714 0902116 0902120 1101712 1102116

1102122 1352116 1352422 1552420

"135 and 155 size furnaces require a 5 or 6-in. (127 or 152 ram) vent. installation requirements.

CABINET WIDTH

IN (mm)

14-3/16 (360) 14-3/16 (360)

17-1/2 (445) 17-1/2 (445)

21 (533) 21 (533)

17-1/2 (445)

21 (533) 21 (533)

21 (533)

24-1/2 (622)

24-1/2 (622) 22-7/8 (581)

WIDTH

IN (mm)

12-9/16 (319) 12-9/16 (319)

15-7/8 (403) 15-7/8 (403)

19-3/8 (492) 19-3/8 (492) 15-7/8 (403) 19-3/8 (492) 19-3/8 (492)

19-3/8 (492)

22-7/8 (581)

Use a vent adapter between furnace and vent stack. See Installation Instructions for complete

SAFETY CONSIDERATIONS

FIRE, EXPLOSION, ELECTRICAL SHOCK, AND

CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal

injury, death, or property damage. Improper installation, adjustment, alteration, service,

maintenance, or use can cause carbon monoxide poisoning, explosion, fire, electrical shock, or other

conditions which may cause personal injury or property damage. Consult a qualified service agency,

local gas supplier, or your distributor or branch for information or assistance. The qualified service

agency must use only factory-authorized and listed

kits or accessories when modifying this product.

FURNACE RELIABILITY HAZARD

Failure to follow this caution may result in unit

component damage. Application of this furnace should be indoors with

special attention given to vent sizing and material, gas input rate, air temperature rise, unit leveling, and unit sizing.

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs.

Use care and wear appropriate protective clothing,

safety glasses and gloves when handling parts, and servicin,q furnaces.

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical

TOP AND

BOTTOM

FLUE COLLAR

IN (mm)

9-5/16 (237) 9-5/16 (237)

9-5/16 (237)

9-5/16 (237) 11-9/16 (294) 11-9/16 (294)

13-5/16 (338) 13-5/16 (338) 11-9/16 (294) 13-5/16 (338) 13-5/16 (338)

13-5/16 (338) 15-1/16 (383) 15-1/16 (383) 23 (584) 4 (102)* 170 (77)

BOTTOM

WIDTH

IN (mm)

12-11/16 (322) 12-11/16 (322)

16 (406) 16 (406)

19-1/2 (495) 19-1/2 (495)

16 (406) 19-1/2 (495) 19-1/2 (495)

19-1/2 (495)

23 (584)

VENT

CONNECTION

SIZE*

IN (mm)

4 (102) 4 (102)

4 (102) 4 (102) 4 (102) 4 (102)

4 (102) 4 (102) 4 (102) 4 (102) 4 (102)

4 (102)* 4 (102)*

SHIP WT

LB(KG)

104 (47) 107 (49)

111(50)

115 (52)

126 (57)

127 (58)

140 (64) 146 (66) 135 (61) 146 (66) 152 (69)

149 (68) 163 (74)

shock, or other conditions which may cause death, personal injury, or property damage. Consult a qualified installer,

service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use

factory-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, and work gloves. Have a fire extinguisher available.

Read these instructions thoroughly and follow all warnings or cautions include in literature and attached to the unit. Consult

local building codes, the current editions of the National Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1 and the National

Electrical Code (NEC) NFPA 70. Recognize safety information. This is the safety-alert symbol

/_. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which

will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or

death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will

result in enhanced installation, reliability, or operation.

1. Use only with type of gas approved for this furnace. Refer to the furnace rating plate.

2. Install this furnace only in a location and position as specified in the "Location" section of these instructions.

3. Provide adequate combustion and ventilation air to the furnace space as specified in "Air for Combustion and

Ventilation" section.

4. Combustion products must be discharged outdoors. Connect this furnace to an approved vent system only,

as specified in the "Venting" section of these instruc- tions.

5. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically

for the detection of leaks to check all connections, as specified in the "Gas Piping" section.

6. Always install furnace to operate within the furnace's intended temperature-rise range with a duct system

441 01 1402 02 3

whichhasanexternalstaticpressurewithintheallow- ablerange,asspecifiedinthe"Start-Up,Adjustments,

andSafetyCheck"section.Seefurnaceratingplate.

7.Whenafurnaceisinstalledsothatsupplyductscarry aircirculatedbythefurnacetoareasoutsidethespace

containingthefurnace,thereturnairshallalsobe handledbyduct(s)sealedtothefurnacecasingand

terminatingoutsidethespacecontainingthefurnace.

See"AirDucts"section.

8.Agas-firedfurnaceforinstallationinaresidentialgar- agemustbeinstalledasspecifiedinthewarningboxin

the"Location"section.

9.Thefurnacemaybe usedfor constructionheat providedthatthefurnaceinstallationandoperation

complieswiththefirstCAUTIONintheLOCATIONsec-

tionoftheseinstructions.

10.TheseMultipoiseGas-FiredFurnacesare CSA (formerlyA.G.A.andC.G.A.)design-certifiedforuse

withnaturalandpropanegases(seefurnacerating

plate)andforinstallationinalcoves,attics,basements, closets,utilityrooms,crawlspaces,andgarages.The

furnaceisfactory-shippedforusewithnaturalgas.A

CSA(A.G.A.andC.G.A.)listedaccessorygasconver-

sionkitisrequiredtoconvertfurnaceforusewithpro-

panegas.

11.SeeFigure1 forrequiredclearancesto combustible construction.

12.Maintaina1-in.(25mm)clearancefromcombustible materialstosupplyairductworkfora distanceof36in.

Figure 2 - Clearances to Combustibles

(914mm)horizontallyfromthefurnace.SeeNFPA90B

orlocalcodeforfurtherrequirements.

13.ThesefurnacesSHALLNOTbeinstalleddirectlyon carpeting,tile,oranyothercombustiblematerialother

thanwoodflooring.In downflowinstallations,factory accessoryfloorbaseMUSTbeusedwheninstalledon

combustiblematerialsandwoodflooring.Specialbase

isnotrequiredwhenthisfurnaceisinstalledonmanu-

facturer'scoilmodelnumbersEND4X,ENW4Xor whencoilcasingmodelnumberNAEAis used.See

Figure1forclearancetocombustibleconstructionin-

formation.

INTRODUCTION

N8MSN & N8MSL 4-way multipoise Category I fan-assisted furnace is CSA design-certified. A Category I fan-assisted

furnace is an appliance equipped with an integral mechanical means to either draw or force products of combustion through the combustion chamber and/or heat exchanger. 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 for minimum continuous return-air temperature of 60°F (16°0) db or intermittent operation down to 55_'F (13°0) db such as when used with a night setback

thermostat. Return-air temperature must not exceed 80°F

(27°0) db. Failure to follow these return-air temperature limits

may affect reliability of heat exchangers, motors, and controls. (See Figure 3)

Improper adjustment, alteration, service, maintenance, or installation can cause

serious injury or death,

Read and follow instructions and

arecautions in User's Information Manual erovided with this furnace. Installation

and service must be performed by a qualified service agency or the gas supplier,

_IL CAUTION

Check entire gas assembly for leaks after

lighting this appliance.

I INSTALLATION I

1. This furnace must be installed in accordance with the manufacturer's

instructions and local codes. In the absence of local codes, follow the National

Fuel Gas Code ANSI Z223.1 / NFPA54 or CSA B-149.1 Gas Installation Code.

2. This furnace must be installed so there are previsions for combustion and ventilation

air. See manufacturer's installation information provided with this appliance.

I OPERATION I

This furnace is equipped with manual reset limit switch(es) in burner compartment to protect against overheat conditions that

can result from inadequate combustion air supply or blocked vent conditions.

1. Do not bypass limit switches.

2. If a limit opens, call a quallified serviceman to correct the condition

and reset limit switch.

MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION

This forced air furnace is This furnace is approved for

equipped for use with natural HORIZONTAL installations, gas at altitudes 0 - 10,000 ft

(0 - 3,050m), Clearancearrows

An accessory kit, supplied by furnaceorientation the manufacturer, shall be used to convert to propane gas use

or may be required for some natural gas applications.

This furnace is for indoor installation in a building

constructed on site.

This furnace may be installed on combustible flooring in alcove

or closet at minimum clearance as indicated by the diagram

from combustible material.

This furnace may be used with Clearancein inches a Type B-1 Vent and may be VentOlearancetocombustibles: vented in common with other For Single Wall vents 6 inches (6 po).

gas fired appliances. For Type B-1vent type 1 inch (1 po).

DOWNFLOW POSITIONS:

1" Installation on non-combustible floors only.

For Installation on combustible flooring only when installed on special base, Part No. KGASB0201ALL or NAHAO1101SB, Coil Assembly, Part No. CAR, CAP, CNPV, CNRV, END4X, ENW4X, WENC, WTNC, WENW OR WTNW.

18 inches front clearance required for alcove.

* Indicates supply or return sides when furnace is in the horizontal

position. Line contact only permissible between lines formed by intersections of the Top and two Sides of the furnace jacket, and building joists, studs or framing.

I INSTALLATION I

UPFLOW, DOWNFLOW, and

do not change with

MINIMUM INCHES CLEARANCE TO

COMBUSTIBLE CONSTRUCTION

IIIIIIIIIHMIMHI

336996-101 REV. C

4 441 01 1402 02

Figure 3 - Return Air Temperature

MAX 8OoF/27 oO

FRONT

"< :/ MIN 60°F/16°C

A06745

For accessory installation details, refer to the applicable instruction literature.

NOTE: Remove all shipping brackets and materials before operating the furnace.

CODES AND STANDARDS

Follow all national and local codes and standards in addition to these instructions. The installation must comply

with regulations of the serving gas supplier, local building, heating, plumbing, and other codes. In absence of local

codes, the installation must comply with the national codes listed below and all authorities having jurisdiction. In the

United States , follow all codes and standards for the following:

Step 1 --Safety

National Fuel Gas Code (NFGC) NFPA 54-2009/ANSI Z223.1-2009 and the Installation

Standards, Warm Air Heating and Air Conditioning Systems ANSl/NFPA 90B

Step 2--General Installation

Current edition of the NFGC and the NFPA 90B. For copies, contact the National Fire Protection Associ-

ation Inc., Batterymarch Park, Quincy, MA 02269; (www.NFPA.org) or for only the NFGC, contact the

American Gas Association, 400 N. Capitol Street,

N.W., Washington, DO 20001 (www.AGA.org).

Step 3 --Combustion and Ventilation Air

Section 9.3 of the NFGC, NFPA 54/ANSI Z223.1-2009 Air for Combustion and Ventilation

Step 4--Duct Systems

Air Conditioning Contractors Association (ACCA)

Manual D, Sheet Metal and Air Conditioning Con-

tractors National Association (SMACNA), or Americ-

an Society of Heating, Refrigeration, and Air Condi-

tioning Engineers (ASHRAE) 2001 Fundamentals

Handbook Chapter 34 or 2000 HVAC Systems and Equipment Handbook Chapters 9 and 16.

--Acoustical Lining and Fibrous GlassStep 5

Duct

Current edition of SMACNA and NFPA 90B as

tested by UL Standard 181 for Class I Rigid Air

Ducts

Step 6--Gas Piping and Gas Pipe Pressure Testing

NFGC; NFPA 54 /ANSI Z223.1-2009 chapters 5, 6, 7 and 8 and National Plumbing Codes

Step 7--Electrical Connections

National Electrical Code (NEC) ANSI/NFPA 70-2008

Step 8--Venting

NFGC NFPA 54/ANSI Z223.1-2009; chapters 12

and 13

ELECTROSTATIC DISCHARGE (ESD)

PRECAUTIONS PROCEDURE

FURNACE RELIABILITY HAZARD

Failure to follow this caution may result in furnace component damage.

Electrostatic discharge can affect electronic components. Follow the Electrostatic Discharge Precautions Procedure listed below during furnace installation and servicing to protect the furnace electronic control. Precautions will prevent electrostatic discharges from personnel and hand tools which are held during the procedure. These precautions will help to avoid exposing

the control to electrostatic discharge by putting the furnace, the control, and the person at the same

electrostatic potential.

1. Disconnect all power to the furnace. Multiple discon- nects may be required. DO NOT TOUCH THE

CONTROL OR ANY WIRE CONNECTED TO THE CONTROL PRIOR TO DISCHARGING YOUR BODY'S

ELECTROSTATIC CHARGE TO GROUND.

2. Firmly touch the clean, unpainted, metal surface of the furnace chassis which is close to the control. Tools

held in a person's hand during grounding wilt be satis- factorily discharged.

3. After touching the chassis, you may proceed to service the control or connecting wires as long as you do noth-

ing to recharge your body with static electricity (for ex- ample; DO NOT move or shuffle your feet, do not touch

ungrounded objects, etc.).

4. If you touch ungrounded objects (and recharge your body with static electricity), firmly touch a clean, un-

painted metal surface of the furnace again before touching control or wires.

5. Use this procedure for installed and uninstatled (un- grounded) furnaces.

6. Before removing a new control from its container, dis- charge your body's electrostatic charge to ground to

protect the control from damage. If the control is to be installed in a furnace, follow items 1 through 4 before

bringing the control or yourself in contact with the fur- nace. Put all used and new controls into containers be-

fore touching ungrounded objects.

7. An ESD service kit (available from commercial sources) may also be used to prevent ESD damage.

441 01 1402 02 5

LOCATION

CARBON MONOXIDE POISONING AND UNIT

DAMAGE HAZARD

Failure to follow this warning could result in personal injury or death, and unit component damage.

Corrosive or contaminated air may cause failure of parts containing flue gas, which could leak into the living space. Air for combustion must not be contaminated by halogen compounds, which include fluoride, chloride,

bromide, and iodide. These elements can corrode heat exchangers and shorten furnace life. Air contaminants

are found in aerosol sprays, detergents, bleaches, cleaning solvents, salts, air fresheners, and other household products. Do not install furnace in a corrosive or contaminated atmosphere. Make sure all combustion and circulating air requirements are met, in addition to

all local codes and ordinances.

Figure 4 - Multipoise Orientations

THE BLOWER IS LOCATED

TOTHE RIGHT OFTHE

BURNERSECTION, AND

AiR CONDITIONED AIR IS

DISCHARGEDTO THE LEFT.

GENERAL

This multipoise furnace is shipped in packaged configuration. Some assembly and modifications are required when used in

any of the four applications shown in Figure 4. This furnace must:

be installed so the electrical components are protec-

ted from water.

not be installed directly on any combustible material other than wood flooring for upflow applications.

Downflow installations require use of a factory-ap- proved floor base, coil model numbers END4X,

ENW4X or coil casing model number NAEA when installed on combustible materials or wood flooring.

(Refer to SAFETY CONSIDERATIONS). be located as close to the chimney or vent and at-

tached to an air distribution system. Refer to Air

Ducts section.

AIRFLOW

THE BLOWER IS

LOCATED BELOWTHE

BURNERSECTION, AND

CONDITIONED AIR IS

DISCHARGED UPWARD.

LOCATEDABOVETHE

BURNER SECTION, AND

THE BLOWER IS '_7

CONDITIONEDAIR IS

DISCHARGED DOWNWARD

be provided ample space for servicing and cleaning. Always comply with minimum fire protection clear-

ances shown on the furnace clearance to combust- ible label.

The following types of furnace installations may re- quire OUTDOOR AIR for combustion due to chemic-

al exposures: Commercial buildings

Buildings with indoor pools Laundry rooms

Hobby or craft rooms, and Chemical storage areas

If air is exposed to the following substances, it should not be

used for combustion air, and outdoor air may be required for combustion:

Permanent wave solutions Chlorinated waxes and cleaners

Chlorine based swimming pool chemicals

AIRFLOW

_ HORIZONTAL RIGH_AIRF L_C w

THE BLOWER IS

LOCATED TO THE LEFT

OF THE BURNER SECTION,

AND CONDiTiONED AIR IS

DISCHARGED TO THE RIGHT.

A02097

Water softening chemicals

De-icing salts or chemicals Carbon tetrachloride

Halogen type refrigerants Cleaning solvents (such as perchloroethylene)

Printing inks, paint removers, varnishes, etc. Hydrochloric acid

Cements and glues

Antistatic fabric softeners for clothes dryers

Masonry acid washing materials

All fuel-burning equipment must be supplied with air for fuel combustion. Sufficient air must be provided to avoid negative

pressure in the equipment room or space. A positive seal must be made between the furnace cabinet and the

return-air duct to prevent pulling air from the burner area and from draft safeguard opening.

6 441 01 1402 02

FIRE, INJURY OR DEATH HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage.

When the furnace is installed in a residential garage, the burners and ignition sources must be located at

least 18 in. (457 mm) above the floor. The furnace must be located or protected to avoid damage by

vehicles. When the furnace is installed in a public

garage, airplane hangar, or other building having a hazardous atmosphere, the furnace must be installed in accordance with the NFPA 54/ANSI Z223.1-2009. (See Figure 5)

Figure 5 - Installation in a Garage

18-1N. (457.2 mm)

MINIMUM TO BURNERS

A93044

PERSONAL INJURY AND/OR PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in furnace

component damage. This gas furnace may be used for heating buildings

under construction 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 the furnace casing, and terminated outside the space containing the furnace. This prevents a negative pressure condition as created by the circulating air blower, causing a flame

rollout and/or drawing combustion products into the

structure.

-The furnace is controlled by a thermostat. It may not be hot wired to provide heat continuously to the

structure without thermostatic control.

-Clean outside air is provided for combustion. This is to minimize the corrosive effects of adhesives, sealers and other construction materials. It also

prevents the entrainment of drywall dust into combustion air, which can cause fouling and plugging of furnace components.

-The temperature of the return air to the furnace is maintained between 55°F (13°C) and 80°F (27°C), with no evening setback or shutdown. The use of the

furnace while the structure is under construction is deemed to be intermittent operation per our

installation instructions.

-The air temperature rise is within the rated rise range on the furnace rating plate, and the gas input rate has been set to the nameplate value.

-The filters used to clean the circulating air during the

construction process must be either changed or thoroughly cleaned prior to occupancy.

-The furnace, ductwork and filters are cleaned as necessary to remove drywall dust and construction

debris from all HVAC system components after construction is completed.

-Verify proper furnace operating conditions including ignition, gas input rate, air temperature rise, and

venting according to these installation instructions.

FIRE HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage.

Do not install the furnace on its back or hang furnace with control compartment facing downward. Safety control operation will be adversely affected. Never

connect return-air ducts to the back of the furnace.

(See Figure 6)

Figure 6 - Prohibit Installation on Back

BACK

A02054

LOCATION RELATIVE TO COOLING EQUIPMENT

The cooling coil must be installed parallel with, or on the

downstream side of the unit to avoid condensation in the heat exchangers. When installed parallel with the furnace,

dampers or other flow control must prevent chilled air from entering the furnace. If the dampers are manually operated,

they must be equipped with means to prevent operation of

either unit unless the damper is in the full-heat or full-cool position.

AIR FOR COMBUSTION AND

VENTILATION

Provisions for adequate combustion, ventilation, and dilution air must be provided in accordance with:

Section 9.3 of the NFPA 54/ANSI Z223.1-2009, Air

for Combustion and Ventilation, and applicable pro- visions of the local building codes.

441 01 1402 O2 7

2. Figure 7 illustrates how to provide TWO OUTDOOR OPENINGS, one inlet and one outlet combustion and

ventilation air opening, to the outdoors.

FURNACE CORROSION HAZARD Failure to follow this caution may result in furnace

damage.

Air for combustion must not be contaminated by

halogen compounds, which include fluoride, chloride, bromide, and iodide. These elements can corrode

heat exchangers and shorten furnace life. Air contaminants are found in aerosol sprays, detergents, bleaches, cleaning solvents, salts, air

fresheners, and other household products.

a. One opening MUST commence within 12 in. (300

mm) of the ceiling and the second opening MUST commence within 12 in. (300 mm) of the floor.

b. Size openings and ducts per Figure 7 and Table 2.

c. TWO HORIZONTAL DUCTS require 1 sq./in, of free

area per 2,000 Btuh (1,100 mm2/kW) of combined input for all gas appliances in the space per

Figure 7 and Table 2.

d. TWO OPENINGS OR VERTICAL DUCTS require 1

sq./in, of free area per 4,000 Btuh (550 mm2/kW) for combined input of all gas appliances in the

space per Figure 7 and Table 2.

CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal

injury or death. The operation of exhaust fans, kitchen ventilation

fans, clothes dryers, attic exhaust fans or fireplaces could create a NEGATIVE PRESSURE CONDITION

at the furnace. Make-up air MUST be provided for the ventilation devices, in addition to that required by the furnace. Refer to Carbon Monoxide Poisoning Hazard warning in venting section of these instructions to determine if an adequate amount of make-up air is

available.

3. ONE OUTDOOR OPENING requires: a. 1 square inch of free area per 3,000 Btuh (734

mm2/kW) for combined input of all gas appliances in the space per Table 2 and

b. Not less than the sum of the areas of all vent con-

nectors in the space.

The opening shall commence within 12 in. (300 mm) of the ceiling. Appliances in the space shall have clearances of at

least 1 in. (25 mm) from the sides and back and 6 in. (150 mm) from the front. The opening shall directly communicate

with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.

The requirements for combustion and ventilation air depend

upon whether or not the furnace is located in a space having a volume of at least 50 cu/ft, per 1,000 Btuh input rating for all

gas appliances installed in the space.

Spaces having less than 50 cu/ft, per 1,000 Btuh

Indoor Combustion Air NFPA & AGA Standard and Known-Air-Infiltration Rate Methods

Indoor air is permitted for combustion, ventilation, and dilution, if the Standard or Known-Air-Infiltration Method

is used. require the OUTDOOR COMBUSTION AIR METHOD.

Spaces having at least 50 cu/ft, per 1,000 Btuh may use the INDOOR COMBUSTION AIR, STANDARD or KNOWN AIR INFILTRATION METHOD.

Outdoor Combustion Air Method

1. Provide the space with sufficient air for proper combus- tion, ventilation, and dilution of flue gases using per-

manent horizontal or vertical duct(s) or opening(s) dir- ectly communicating with the outdoors or spaces that

CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in death and/or personal injury.

Many homes require air to be supplied from outdoors

for furnace combustion, ventilation, and dilution of flue

gases. The furnace combustion air supply must be provided in accordance with this instruction manual.

freely communicate with the outdoors.

Table 2--Minimum Free Area Re(

TWO HORIZONTAL DUCTS SINGLE DUCT OR OPENING

FURNACE (1 SQ. IN./2,000 BTUH) (1 SQ. IN./3,000 BTUH)

INPUT (1,100 SQ. MM/KW) (734 SQ. MM/KW)

(BTUH) Free Area of Round Duct Free Area of Round Duct Free Area of Round Duct

Opening and Duct Dia. Opening and Duct Dia. Opening and Duct Dia.

Sq. In. (Sq. mm) In. (mm) Sq. In. (Sq. mm) In. (mm) Sq. In. (Sq. mm) In. (mm)

44,000 22 (14194) 6 (152) 14.7 (9484) 5 (127) 11 (7096) 4 (102) 66,000 33 (21290) 7 (178) 22.0 (14193) 6 (152) 16.5 (10645) 5 (127) 88,000 44 (28387) 8 (203) 29.3 (18903) 7 (178) 22 (14193) 6 (152)

110,000 55 (35484) 9 (229) 36.7 (23677) 7 (178) 27.5 (17742) 6 (152) 132,000 66 (42580) 10 (254) 44.0 (28387) 8 (203) 33 (21290) 7 (178)

154,000 77 (49677) 10 (254) 51.3 (33096) 9 (229) 38.5 (24839) 8 (203)

uired for Each Combustion Air Opening of Duct to Outdoors

TWO OPENINGS OR VERTICAL

DUCTS

(1 SQ. IN./4,000 BTUH)

(550 SQ. MM/KW)

FURNACE WATER HEATER TOTAL INPUT

110,000 + 30,000 (140,000 divided by 4,000) = 35.0 Sq. In. for each two Vertical Ducts or Openings

66,000 + 40,000 (106,000 divided by 3,000) = 35.3 Sq. In.for a Single Duct or Opening 88,000 + 30,000 (118,000 divided by 2,000) = 59.0 Sq. In. for each of two Horizontal Ducts

8 441 01 1402 02

EXAMPLES: Determining Free Area

Table 3--Minimum Space Volumes for 100% Combustion, Ventilation, and Dilution from Indoors

OTHER THAN FAN-ASSISTED TOTAL FAN-ASSISTED TOTAL

(1,000'S BTUH GAS INPUT RATE) (1,000'S BTUH GAS INPUT RATE)

30 40 50 44 66 88 110 132 154

ACH Space Volume Ft3 (M3)

0.60 (29.7) (39.6) (49.5) (31.1) (46.7) (62.2) (77.8) (93.4) (109.0)

0.50 (35.6) (47.5) (59.4) (37.3) (56.0) (74.7) (93.4) (112.1 ) (130.8)

0.40 (44.5) (59.4) (74.3) (46.7) (70.0) (93.4) (116.8) (140.1 ) (163.5)

0.30 (59.4) (79.2) (99.1) (62.2) (93.4) (124.5) (155.7) (186.8) (218.0)

0.20 (89.1) (118.9) (148.6) (93.4) (140.1 ) (186.8) (233.6) (280.3) (327.0)

0.10 (178.3) (237.8) (297.3) (186.8) (280.3) (373.7) (467.2) (560.6) (654.1)

0.00 NP NP NP NP NP NP NP NP NP

NP = Not Permitted

Figure 7 -- Air for Combustion, Ventilation, and Dilution

1,050 1,400 1,750 1,100 1,650 2,200 2,750 3,300 3,850

1,260 1,680 2,100 1,320 1,980 2,640 3,300 3,960 4,620

1,575 2,100 2,625 1,650 2,475 3,300 4,125 4,950 5,775

2,100 2,800 3,500 2,200 3,300 4,400 5,500 6,600 7,700

3,150 4,200 5,250 3,300 4,950 6,600 8,250 9,900 11,550

6,300 8,400 10,500 6,600 9,900 13,200 16,500 19,800 23,100

Figure 8 - Air for Combustion, Ventilation, and Dilution

OUTDOORS

for Outdoors

SQ IN. PER 4000 BTUH*

from Indoors

VENT THROUGH ROOF

(305mm) 12" MAX

1 SQ IN. PER 2000

BTUH*

DUCTS

OUTDOORS

1 SQ IN. PER 2000 BTUH*

(305mm)

CIRCULATING AIR DUCTS

TO PER 4000

OUTDOORS BTUH*

*Minimum dimensions of 3-in. (76 mm).

NOTE: Use any ofthe following combinations of openings:

A&BC&DD&EF&G

1 SQ IN.

12_X (305mm)

1 SQ IN.

PER

4000

BTUH*

O3 rr

O O

F-

1 SQ IN.

PER

4000

BTUH*

12" (305mm)

MAX

The Standard Method:

1. The space has no less volume than 50 cu/ft, per 1,000 Btuh of the maximum input ratings for all gas appli-

ances installed in the space and

2. The air infiltration rate is not known to be less than 0.40 air changes per hour (ACH).

A03174

I I

INTERIOR

HEATED

SPACE

CIRCULATING AIR DUCTS

Minimum opening size is 100 sq in. (64516 sq. mm)with minimum dimensions of in. (76 ram)

Minimum of 3 in. (76 mm) when type-B1 vent is used.

Table 3 - Minimum Space Volumes were determined by

using the following equations from the National Fuel Gas Code ANSI 7223.1-2009/NFPA 54-2009, 9.3.2.2:

1. For other than fan-assisted appliances, such as a draft hood-equipped water heater:

12" AX(305mm)

2_ 1 SQ IN.

BTUH* IN DOOR

i PER 1000

OR WALL

UNCONFINED

W SPACE

-4,

_: 6" MIN (152mm) co (FRONT)0

_z 1 SQ IN.

PER 1000

_ BTUH* IN DOOR

OR WALL

L 12"MAX(305ram)

The Known Air Infiltration Rate Method shall be used, if the infiltration rate is known to be:

1. Less than 0.40 ACH and

Vo'" m e Other: A-A0_ _k,T000 "a_/h r"#

2. Equal to or greater than 0.10 ACH

Infiltration rates greater than 0.60 ACH shall not be used. The minimum required volume of the space varies with the

2. For fan-assisted appliances such as this furnace:

number of ACH and shall be determined per Table 3 or Equations 1 and 2. Determine the minimum required volume

for each appliance in the space and add the volumes together to get the total minimum required volume for the

V°lumeFan = ACH _000 Btu/hrJ

15ft3 f[ ]fan ="_

space.

441 01 1402 02 9

A03t 75

A04002

A04003

If: Iother= combinedinputof all otherthanfan-assisted

appliancesinBtuh/hr

Ifan= combinedinputof all fan-assistedappliancesin Btuh/hrACH=airchangesperhour(ACHshallnotexceed

0.60.)Thefollowingrequirementsapplyto theStandard MethodandtotheKnownAirInfiltrationRateMethod.

1.Adjoiningroomscanbeconsideredpartofaspaceif: a.Therearenocloseabledoorsbetweenrooms.

b.Combiningspacesonsamefloorlevel.Eachopen-

ingshallhavefreeareaofatleast1in.2/1,000Btuh (2,000mm2/kW)ofthetotalinputratingofallgas

appliancesinthespace,butnotlessthan100in.2

(0.06m2).Oneopeningshallcommencewithin12 in.(300mm)oftheceilingandthesecondopening

shallcommencewithin12in.(300mm)ofthefloor. Theminimumdimensionofairopeningsshallbeat

least3in.(80mm).(SeeFigure8)

c.Combiningspaceondifferentfloorlevels.The

volumesofspacesondifferentfloorlevelsshallbe consideredascommunicatingspacesifconnected

byoneormorepermanentopeningsindoorsor floorshavingfreeareaofatleast2in.2/1,000Btuh

(4,400mm2/kW)oftotalinputratingofallgasappli-

ances.

2.Anatticorcrawlspacemaybeconsideredaspacethat freelycommunicateswiththeoutdoorsprovidedthere

areadequatepermanentventilationopeningsdirectly tooutdoorshavingfreeareaofat least1-in.2/4,000

Btuhoftotalinputratingforallgasappliancesinthe

space.

3.InspacesthatusetheIndoorCombustionAirMethod,

infiltrationshouldbeadequatetoprovideairforcom- bustion,permanentventilationand dilutionof flue

gases.However,inbuildingswithunusuallytightcon-

struction,additionalairMUSTbeprovidedusingthe

methodsdescribedintheOutdoorCombustionAir Methodsection.

UnusuallytightconstructionisdefinedasConstructionwith:

a.Wallsandceilingsexposedtotheoutdoorshavea

continuous,sealedvaporbarrier.Openingsaregas- ketedorsealedand

b.Doorsandopenablewindowsareweatherstripped

and

c.Otheropeningsarecaulkedorsealed.Thesein-

cludejointsaroundwindowanddoorframes, betweensoleplatesandfloors,betweenwall-ceil-

ingjoints,betweenwallpanels,atpenetrationsfor

plumbing,electricalandgaslines,etc.

CombinationofIndoorandOutdoorAir

1.IndooropeningsshallcomplywiththeIndoorCom- bustionAirMethodbelowand,

2.Outdooropeningsshallbelocatedasrequiredinthe OutdoorCombustionAir Methodmentionedprevi-

ouslyand,

3.Outdooropeningsshallbesizedasfollows:

a.CalculatetheRatioofallIndoorSpacevolumedi-

videdbyrequiredvolumeforIndoorCombustion AirMethodbelow.

b.OutdooropeningsizereductionFactoris1minus

theRatioina.above.

c.MinimumsizeofOutdooropeningsshallbethesize

requiredinOutdoorCombustionAirMethod abovemultipliedbyreductionFactorinb.above. Theminimumdimensionofairopeningsshallbe

notlessthan3in.(80mm).

INSTALLATION

UPFLOW INSTALLATION

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom return-air opening. Remove and discard

this panel when bottom return air is used. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove 2 screws holding bot- tom filler panel. (See Figure 9.)

Figure 9 -- Removing Bottom Closure Panel

BOTTOM CLOSURE

PANEL

BOTTOM FILLER PANEL

2. Rotate bottom filler panel downward to release holding tabs.

3. Remove bottom closure panel.

4. Reinstall bottom filler panel and screws.

Side Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom return-air opening. This panel MUST be in place when only side return air is used.

NOTE: Side return-air openings can be used in UPFLOW and most HORIZONTAL configurations. Do not use side return-air openings in DOWNFLOW configuration.

In upflow position with side return inlet(s), leveling legs may be used. (See Figure 10) Install field-supplied, 5/16 x 1-1/2

in. (8 x 38 mm) (max) corrosion-resistant machine bolts, washers and nuts.

NOTE: Bottom closure must be used when leveling legs are used. It may be necessary to remove and reinstall bottom closure panel to install leveling legs. To remove bottom closure panel, see Item 1. in Bottom Return Air Inlet section.

10 441 01 1402 02

Figure 10 - Leveling Legs Figure 11 - Floor and Plenum Opening Dimensions

(8mm)

(44mm)

1 3/4"

(44mm)

(8mm)

5/16 _

(8mm)

(44mm) 1 3/4"

(44mm) I 3/4'_.

A89014

Leveling Legs (If Desired) To install leveling legs:

1. Position furnace on its back. Locate and drill a hole in each bottom corner of furnace. (See Figure 10)

2. For each leg, install nut on bolt and then install bolt and nut in hole. (Install flat washer if desired.)

3. Install another nut on other side of furnace base. (In- stall flat washer if desired.)

4. Adjust outside nut to provide desired height, and tight- en inside nut to secure arrangement.

5. Reinstall bottom closure panel if removed.

DOWNFLOW INSTALLATION NOTE: For downflow applications, this furnace is approved

for use on combustible flooring when any one of the following 3 accessories are used:

Downflow combustible floor subbase Coil model number END4X or ENW4X

Coil casing model number NAEA

1. Determine application being installed from Table 4.

2. Construct hole in floor per Table 4 and Figure 11.

3. Construct plenum to dimensions specified in Table 4 and Figure 11.

4. If downflow subbase is used, install as shown in Figure 12. If coil model numbers END4X, ENW4X or

coil casing model number NAEA is used, install as shown in Figure 13.

A96283

NOTE: It is recommended that the perforated supply-air duct

flanges be completely folded over or removed from furnace

when installing the furnace on a factory-supplied cased coil or coil box. To remove the supply-air duct flange, use wide duct pliers or hand seamers to bend flange back and forth until it breaks off. Be careful of sharp edges. (See Figure 14)

Figure 12 - Furnace, Plenum, and Subbase Installed on

a Combustible Floor

FURNACE

(OR COIL CASING

WHEN USED)

COMBUSTIBLE

FLOORING

DOWNFLOW

SUBBASE

SHEET METAL

PLENUM

__ FLOOR __

OPENING

A96285

441 01 1402 02 11

Figure 13 - Furnace, Plenum, and Coil or Coil Casing

Installed on a Combustible Floor

FURNACE

APPROVED

COIL ASSEMBLY

COIL BOX

COMBUSTIBLE

FLOORING

\\\\_

_f,=====SHEET METAL =====.=_

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel

installed in bottom return-air opening. Remove and discard this panel when bottom return air is used. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove 2 screws holding bot- tom filler panel. (See Figure 9)

2. Rotate bottom filler panel downward to release holding tabs.

3. Remove bottom closure panel.

4. Reinstall bottom filler panel and screws.

HORIZONTAL INSTALLATION

FIRE, EXPLOSION, AND CARBON MONOXIDE POISONING HAZARD

Failure to follow this warning could result in personal injury, death, or property damage.

Do not install the furnace on its back or hang furnace with control compartment facing downward. Safety control operation will be adversely affected. Never

connect return-air ducts to the back of the furnace.

The furnace can be installed horizontally in an attic or crawl

space on either the left-hand (LH) or right-hand (RH) side. The furnace can be hung from floor joists, rafters or trusses or

installed on a non-combustible platform, blocks, bricks or

pad.

Suspended Furnace Support

The furnace may be supported under each end with threaded

rod, angle iron or metal plumber's strap as shown. (See Figure 15 and Figure 16) Secure angle iron to bottom of

furnace as shown. Heavy-gauge sheet metal straps

(plumber's straps) may be used to suspend the furnace from

PLENUM

FLOOR

OPENING

A08556

each bottom corner. To prevent screws from pulling out, use 2 #8 x 3/4-in. (19 mm) screws into the side and 2 #8 x 3/4-in.

(19 mm) screws in the bottom of the furnace casing for each

strap. (See Figure 15 and Figure 16) If the screws are attached to ONLY the furnace sides and not

the bottom, the straps must be vertical against the furnace sides and not pull away from the furnace sides, so that the strap attachment screws are not in tension (are loaded in

shear) for reliable support.

Platform Furnace Support

Construct working platform at location where all required furnace clearances are met. (See Figure 2 and Figure 17) For

furnaces with 1-in. (25 mm) clearance requirement on side, set furnace on non- combustible blocks, bricks or angle iron. For crawl space installations, if the furnace is not suspended

from the floor joists, the ground underneath furnace must be level and the furnace set on blocks or bricks.

Roll-Out Protection

Provide a minimum 17-3/4 in. x 22 in. (451 x 559 mm) piece of sheet metal for flame roll-out protection in front of burner area for furnaces closer than 12 inches (305 mm) above the

combustible deck or suspended furnaces closer than 12 inches (305 mm) to joists. The sheet metal MUST extend underneath the furnace casing by 1 in. (25 mm) with the door

removed. The bottom closure panel on furnaces of widths 17-1/2 in.

(445 mm) and larger may be used for flame roll-out protection when bottom of furnace is used for return air connection. See Figure 17 for proper orientation of roll-out

shield.

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom return-air opening. Remove and discard

this panel when bottom return air is used. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove 2 screws holding bot- tom filler panel. (See Figure 9)

2. Rotate bottom filler panel downward to release holding tabs.

3. Remove bottom closure panel.

4. Reinstall bottom filler panel and screws.

Side Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom return-air opening. This panel MUST be in

place when side return air inlet(s) is used without a bottom return air inlet.

Not all horizontal furnaces are approved for side return air connections. (See Figure 20)

FILTER ARRANGEMENT

CARBON MONOXIDE AND POISONING HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage. Never operate a furnace without a filter or with filter

access door removed.

There are no provisions for an internal filter rack in these furnaces.

A field-supplied accessory external filter rack is required. This furnace requires 1 in. (25 mm) external filter rack. Refer to the instructions supplied with external filter rack for

assembly and installation options.

12 441 01 1402 02

Table 4_Opening Dimensions - In. (mm)

FURNACE

CASING

WIDTH

Upflow Applications on Combustible or Noncombustible Flooring 12-11/16 21-5/8 13-5/16 22-1/4

Downflow Applications on Noncombustible Flooring 12-9/16 19 13-3/16 19-5/8

14-3/16 (subbase not required) (319) (483) (335) (498)

(360) Downflow Applications on Combustible Flooring 11-13/16 19 13-7/16 20-5/8

Downflow Applications on Combustible Flooring with Coil END4X, 12-5/16 19 13-5/16 20

ENW4X or Coil Casing NAEA (subbase not required) (319) (483) (338) (508)

Upflow Applications on Combustible or Noncombustible Flooring 16 21-5/8 16-5/8 22-1/4

Downflow Applications on Noncombustible Flooring 15-7/8 19 16-1/2 19-5/8

17-1/2 (subbase not required) (403) (483) (419) (498)

(445) Downflow Applications on Combustible Flooring 15-1/8 19 16-3/4 20-5/8

Downflow Applications on Combustible Flooring with Coil END4X, 15-1/2 19 16-1/2 20

ENW4X or Coil Casing NAEA (subbase not required) (394) (483) (419) (508)

Upflow Applications on Combustible or Noncombustible Flooring 19-1/2 21-5/8 20-1/8 22-1/4

Downflow Applications on Noncombustible Flooring 19-3/8 19 20 19-5/8

21 (subbase not required) (492) (483) (508) (498)

(533) Downflow Applications on Combustible Flooring 18-5/8 19 20-1/4 20-5/8

Downflow Applications on Combustible Flooring with Coil END4X, 19 19 20 20

ENW4X or Coil Casing NAEA (subbase not required) (483) (483) (508) (508)

Upflow Applications on Combustible or Noncombustible Flooring 23 21- 1/8 23-5/8 22-1/4

Downflow Applications on Noncombustible Flooring 22- 7/8 19 23-1/2 19-5/8

24-1/2 (subbase not required) (581) (483) (597) (498)

(622) Downflow Applications on Combustible flooring 22-1/8 19 23-3/4 20-5/8

Downflow Applications on Combustible Flooring with Coil EN D4X, 22-1/2 19 23-1/2 20

ENW4X or Coil Casing NAEA (subbase not required) (572) (483) (597) (508)

APPLICATION

(subbase not required) (322) (549) (338) (565)

(subbase required) (284) (483) (34t) (600)

(subbase not required) (406) (549) (422) (565)

(subbase required) (384) (483) (425) (600)

(subbase not required) (495) (549) (511) (565)

(subbase required) (473) (483) (514) (600)

(subbase not required) (584) (537) (600) (565)

(subbase required) (562) (483) (603) (600)

PLENUM OPENING FLOOR OPENING

A B C D

AIR DUCTS General Requirements

The duct system should be designed and sized according to accepted national standards such as those published by: Air

Conditioning Contractors Association (ACCA), Sheet Metal and Air Conditioning Contractors National Association (SMACNA) or American Society of Heating, Refrigerating and

Air Conditioning Engineers (ASHRAE) or consult The Air Systems Design Guidelines reference tables available from

your local distributor. The duct system should be sized to handle the required system design CFM at the design

external static pressure. The furnace airflow rates are provided in Table 5 - AIR DELIVERY-CFM (With Filter).

When a furnace is installed so that the 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 outside the space containing the furnace.

Secure ductwork with proper fasteners for type of ductwork used. Seal supply- and return-duct connections to furnace

with code approved tape or duct sealer. NOTE: Flexible connections should be used between

ductwork and furnace to prevent transmission of vibration. Ductwork passing through unconditioned space should be insulated and sealed to enhance system performance. When air conditioning is used, a vapor barrier is recommended.

Maintain a 1-in. (25 mm) clearance from combustible materials to supply air ductwork for a distance of 36 in. (914

mm) horizontally from the furnace. See NFPA 90B or local code for further requirements.

Ductwork Acoustical Treatment

NOTE: Metal duct systems that do not have a 90 degree elbow and 10 ft. (3 M) of main duct to the first branch take-off may require internal acoustical lining. As an alternative,

fibrous ductwork may be used if constructed and installed in

accordance with the latest edition of SMACNA construction standard on fibrous glass ducts. Both acoustical lining and

fibrous ductwork shall comply with NFPA 90B as tested by UL

Standard 181 for Class 1 Rigid air ducts. Supply Air Connections For a furnace not equipped with a cooling coil, the outlet duct

shall be provided with a removable access panel. This opening shall be accessible when the furnace is installed and

shall be of such a size that the heat exchanger can be

viewed for possible openings using light assistance or a

probe can be inserted for sampling the air stream. The cover attachment shall prevent leaks.

441 01 1402 02 13

Table 5--Air Delivery - CFM (with Filter)*

FURNACE RETURN-AIR SPEED EXTERNAL STATIC PRESSURE (in, w,c,)

SIZE INLET 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0

0451408A or Med-Low 865 830 790 745 690 625 545 440 250 195

0451412A or Med-Low 1360 1300 1240 1175 1115 1040 950 850 725 575

0701408A or Med-Low 835 815 790 755 710 660 590 480 325 205

0701412A or M ed-Low 1320 1280 1240 1205 1140 1075 995 905 790 620

0701716A or Med-Low 1550 1520 1475 1430 1375 1310 1240 1155 1070 970

0901714B or Med-High 1515 1485 1440 1380 1300 1220 1115 990 830 600

0902116A or Med-Low 1740 1700 1650 1590 1525 1440 1335 1195 1010 820

0902120A or M ed-Low 2230 2170 2110 2050 1985 1890 1780 1660 1525 1360

1101712A or Med-Low 1475 1435 1395 1335 1285 1185 1070 890 725 450

1102116A or Med-Low 1745 1710 1650 1560 1450 1340 1205 1090 865 605

1102122A or Med-Low 2140 2100 2050 1990 1935 1865 1760 1670 1545 14t0

1352116A or Med-Low 1790 1755 1705 1640 1550 1465 1295 1145 945 775

1352422A or Side & Med-Low 2120 2075 1995 1970 1905 1835 1735 1645 1515 1325

1552420A or Med-Low 2155 2125 2075 2015 1935 1830 1780 1635 1485 1365

* A filter is required for each return-air inlet.Airflow performance included 3/_-in, (19mm) washable filter media such as contained infactory-authorized accessory

filter rack. Todetermine airflow performance without this filter,assume an additional 0.1 in. w.c. available external static pressure.

-- Indicates unstable operating conditions.

Bottom High 1035 995 945 895 835 770 675 565 390 195

Side(s) Low 760 720 680 635 580 520 445 345 220 195 Bottom High 1440 1375 1305 1240 1160 1070 975 870 730 560

Side(s) Low 1250 1210 1160 1100 1040 965 885 790 670 520 Bottom High 1030 1005 965 925 870 810 740 645 465 280

Side(s) Low 725 700 675 635 595 545 460 350 250 -- Bottom High 1425 1375 1320 1265 1200 1125 1035 940 830 655

Side (s) Low 1200 1175 1145 1105 1050 990 920 840 725 555 Bottom High 1755 1700 1635 1505 1570 1435 1350 1260 1160 1055

Side(s) Low 1355 1340 1310 1280 1240 1190 1125 1060 975 890 Bottom High 1650 1600 1535 1465 1385 1285 1175 1055 895 645

Side(s) Low 1205 1180 1160 1120 1065 1005 925 810 630 510 Bottom High 1940 1880 1805 1720 1635 1540 1425 1290 1090 830

Side(s) Low 1505 1505 1480 1440 1375 1300 1190 1045 890 740

Bottom Only M ed-Low 2170 2110 2040 1970 1895 1785 1675 1565 1420 1260

Both Sides High 2530 2450 2365 2270 2165 2065 1940 1805 1670 1505

1 Side & Bottom Low 1895 1890 1845 1815 1755 1685 1600 1480 1350 1180

1 Side Only Med-Low 2105 2145 2070 2010 1940 1845 1735 1620 1475 1325

Bottom High 1600 1550 1490 1425 1355 1260 1135 990 785 530

Side(s) Low 1315 1295 1265 1220 1155 1080 985 810 675 440 Bottom High 1980 1915 1835 1750 1655 1495 1365 1185 965 700

Side(s) Low 1530 1515 1470 1400 1310 1215 1095 990 830 670

Bottom Only Med-Low 2135 2100 2060 2000 1930 1860 1765 1670 1555 1425

Bottom, Sides High .... 2355 2285 2190 2090 1965 1850 1705 1535

1 Side & Bottom Low 1855 1840 1815 1775 1725 1675 1600 1510 1405 1290

1 Side Only M ed-Low 2030 2025 2000 1950 1905 1850 1750 1660 1555 1425

Bottom High 2065 2000 1930 1835 1710 1590 1420 1235 1025 835

Side (s) Low 1480 1480 1480 1450 1380 1295 1160 1005 855 670

Bottom Only M ed- Low 2130 2080 2025 1960 1880 1795 1690 1550 1405 1255

Bottom, Sides High .... 2355 2280 2160 2065 1930 1805 1655 1465

Bottom Low 1860 1830 1800 1755 1725 1630 1530 14t5 1280 1140

1 Side Only M ed-Low 2070 2015 1970 1935 1855 1765 1655 1550 1445 1265

Bottom Only M ed-Low 2115 2095 2055 2005 1940 1845 1820 1675 1525 1390

Both Sides High .... 2375 2285 2185 2105 1995 1870 1720 1555

1 Side & Bottom Low 1800 1790 1770 1735 1695 1640 1570 1465 1345 1225

1 Side Only Med-Low 2140 2085 2020 1950 1850 1745 1695 1545 14t5 1290

Med-Low 1385 1360 1320 1260 1195 1120 1025 915 710 565

High 2405 2310 2220 2130 2025 1920 1790 1660 1530 1350

Low 1920 1875 1835 1780 1715 1630 1535 1420 1275 1135

High 2475 2395 2300 2200 2090 1985 1865 1730 1585 1425

Low 1850 1860 1810 1770 1715 1650 1555 1445 1310 1150

High 2485 24t 5 2340 2255 2160 2060 1950 1840 1720 1565

Low 1855 1840 1815 1775 1725 1675 1600 1510 1405 1290

High 2495 2440 2370 2290 2205 2120 2015 1910 1775 1625

Low -- 1735 1725 1695 1650 1595 1535 1455 1335 1230

High 2445 2365 2280 2190 2085 1980 1850 1705 1520 1355

Low 1860 1830 1800 1755 1705 1630 1530 14t5 1280 1140

High .... 2215 2130 2030 1920 1795 1675 1540 1385

Low 1860 1830 1800 1755 1725 1630 1530 14t5 1280 1140

High 2465 2430 2375 2305 2215 2110 2000 1865 1715 1530

Low 1800 1790 1770 1735 1695 1640 1570 1465 1345 1225

High .... 2260 2180 2070 1975 1865 1740 1595 1440

Low 1800 1790 1770 1735 1695 1640 1570 1465 1345 1225

14 441 01 1402 02

Figure 14 - Duct Flanges

UPFLOW

YES

/ t\ /\

120'_ YES 120°_ YES 120°_

MIN MIN MIN

NO NO NO

DOWNFLOW HORIZONTAL

I ......

YES

Figure 15 - Horizontal Unit Suspension

4 REQ,

/ /4" (6mm) THREADED ROD

YES

A02020

OUTER DOOR ASSEMBLY

8" (203mm) MtN FOR DOOR REMOVAL

(2) HEX NUTS, (2) WASHERS & (2) LOCK WASHERS REQ. PER ROD

SECURE ANGLE IRON TO BOTTOM

OF FURNACE WITH 3 #8 x3/4'' (19mm) SCREWS

TYPICAL FOR 2 SUPPORTS

1" (25ram) SQUARE, 1-1/4"x1-1/4"x1/8" (32x32x3mm)

ANGLE IRON OR UNI-STRUT MAY BE USED

A10130

441 01 1402 02 15

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