ICP F9MAE, G9MAE Installation Instructions Manual

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Page 1

INSTALLATION INSTRUCTIONS

Modulating Gas Valve, Variable Speed Motor

35” Tall High Efficiency Condensing Gas Furnace

(F/G)9MAE

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

Safety Labeling and Signal Words

DANGER, WARNING, CAUTION, and NOTE

The signal words DANGER, WARNING, CAUTION, and NOTE are used to identify levels of

hazard seriousness. The signal word DANGER is only 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 manual that may apply to the product.

DANGER − Immediate hazards which will result in severe personal 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 minor personal injury or product or property damage.

NOTE − Used to highlight suggestions which will result in enhanced installation, reliability, or operation.

Signal Words in Manuals

The signal word WARNING is used throughout this manual in the following manner:

WARNING

The signal word CAUTION is used throughout this manual in the following manner:

CAUTION

Signal Words on Product Labeling

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

Safety−alert symbol

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

TABLE OF CONTENTS

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

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

CODES AND STANDARDS 4................................

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

DIMENSIONS 6...........................................

LOCATION 7..............................................

LOCATION RELATIVE TO COOLING EQUIPMENT 8...........

AIR FOR COMBUSTION AND VENTILATION 8................

CONDENSATE TRAP 11....................................

INSTALLATION 18..........................................

UPFLOW INSTALLATION 18.................................

DOWNFLOW INSTALLATION 19..............................

HORIZONTAL INSTALLATION 21.............................

FILTER ARRANGEMENT 23.................................

AIR DUCTS 26.............................................

GAS PIPING 27.............................................

ELECTRICAL CONNECTIONS 28.............................

J−BOX INSTALLATION 29...................................

VENTING 33...............................................

SPECIAL VENTING REQUIREMENTS

FOR INSTALLATIONS IN CANADA 33........................

DIRECT VENT / 2−PIPE SYSTEM 35..........................

VENTILATED COMBUSTION AIR SYSTEMS 35................

TERMINATION REQUIREMENTS FOR THE

PROVINCES OF ALBERTA AND SASKATCHEWAN 37.........

MAXIMUM EQUIVALENT VENT LENGTH 50...................

MAXIMUM ALLOWABLE EXPOSED VENT 53..................

Portions of the text and tables are reprinted from NFPA 54 /ANSI Z223.1−2009©, with permission of National Fire Protection Association, Quincy, MA 02269 and American Gas Association, Washington, DC

20001. This reprinted material is not the complete and official position of the NFPA or ANSI, on the referenced subject, which is represented only by the standard in its entirety.

INSTALLER: Affix these instructions on or adjacent to the furnace. CONSUMER: Retain these instructions for future reference.

Use of the AHRI Certified TM Mark indicates a manufacturer’s participation in the program. For verification of certification for individual products, go to www.ahridirectory.org .

Printed in U.S.A. 440 01 4300 00 Aug. 2012

Page 2

Required Notice for Massachusetts Installations

Important

The Commonwealth of Massachusetts requires compliance with regulation 248 CMR as follows:

5.08: Modifications to NFPA−54, Chapter 10

2) Revise 10.8.3 by adding the following additional requirements:

(a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential

purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back−up is installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified license professionals for the installation of hard wired carbon monoxide detectors.

a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon

monoxide detector with alarm and battery back−up may be installed on the next adjacent floor level.

b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of

thirty (30) days to comply with the above requirement; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.

3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one−half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.

4. INSPECTION. The state of local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR

5.08(2)(a) 1 through 4.

(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a) 1 through 4:

1. The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current edition of NFPA 54 as adopted by the Board; and

2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building or structure used in whole or in part for residential purposes.

(c) MANUFACTURER REQUIREMENTS − GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product Approved side wall

horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall include:

1. Detailed instructions for the installation of the venting system design or the venting system components; and

2. A complete parts list for the venting system design or venting system.

(d) MANUFACTURER REQUIREMENTS − GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the manufacturer of a Product Approved side

wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but identifies “special venting systems”, the following requirements shall be satisfied by the manufacturer:

1. The referenced “special venting system” instructions shall be included with the appliance or equipment installation instructions; and

2. The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall include a parts list and detailed installation instructions.

(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists

for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.

For questions regarding these requirements, please contact the Commonwealth of Massachusetts Board of State Examiners of Plumbers and Gas

Fitters, 239 Causeway Street, Boston, MA 02114. 617−727−9952

Specifications are subject to change without notice.

440 01 4300 00

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Safety Considerations

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

! WARNING

FIRE, EXPLOSION, ELECTRICAL SHOCK, AND CARBON MONOXIDE POISONING HAZARD

Failure to follow this warning could result in dangerous operation, 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.

! WARNING

FIRE HAZARD

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

Solvent cements and primers are combustible. Keep away from heat, sparks and open flame. Use only in well−ventilated areas. Avoid breathing in vapor or allowing contact with skin or eyes.

! CAUTION

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.

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death, personal injury or property damage. Consult a qualified installer, service agency, local gas supplier, or your distributor or branch for information or assistance. The qualified installer or agency must use only factory−authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and

qualified personnel should install, repair, or service heating equipment. Untrained personnel can perform basic

maintenance functions such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating equipment, observe precautions in literature, on tags, and on labels attached to or shipped with furnace and other safety precautions that may apply.

These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We require these instructions as a minimum for a safe installation.

Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Have a fire extinguisher available.

! CAUTION

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 servicing furnaces. This is the safety−alert symbol . When you see this symbol on the furnace 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 a hazard which could result in personal injury or death. CAUTION is used to identify hazards which may result in minor personal injury or product and property damage. NOTE and NOTICE are 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 instructions.

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 which has an external static pressure within the allowable range, as specified in the “Start−Up, Adjustments, and Safety Check” section. See furnace rating plate.

7. When a furnace is installed so that 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. See “Air Ducts” section.

8. A gas−fired furnace for installation in a residential garage must be installed as specified in the warning box in the “Location” section. (See Figure 4)

9. The furnace may be used for construction heat provided that the furnace installation and operation complies with the first CAUTION in the LOCATION section on page 7 of these instructions.

10. These Multipoise Gas−Fired Furnaces are CSA design−certified for use with natural and propane gases (see furnace rating plate) and for installation in alcoves, attics, basements, closets, utility rooms, crawlspaces, and garages. The furnace is factory−shipped for use with natural gas. A CSA (A.G.A. and C.G.A.) listed accessory gas conversion kit is required to convert furnace for use with propane gas.

11. See Table 1 for required clearances to combustible

construction.

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

440 01 4300 00 3

Specifications subject to change without notice.

Page 4

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

Table 1

POSITION

REAR 0

FRONT (Combustion air openings in fur-

nace and in structure)

Required for service *24 (610)

All Sides of Supply Plenum *1 (25)

Sides 0

Vent 0

Top of Furnace 1 (25)

* Consult your local building codes.

13. These furnaces SHALL NOT be installed directly on carpeting, combustible tile, or any other combustible material other than wood flooring. In downflow installations, factory accessory floor base MUST be used when installed on combustible materials and wood flooring. Special base is not required when this furnace is installed on manufacturer’s Coil Assembly is used. See Table 1 for clearance to combustible construction information.

Minimum Clearances to

Combustible Materials for All Units

CLEARANCE

In(mm)

1 (25)

Introduction

The 4−way multipoise Category IV condensing furnace is CSA design−certified as a direct−vent (2−pipe) and ventilated combustion air venting installations. (See Figure 3) The furnace is factory−shipped for use with natural gas. The furnace can be converted in the field for use with propane gas when a factory−supplied conversion kit is used. Refer to the furnace rating plate for conversion kit information.

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 (15°C) db or intermittent operation down to 55°F (15°C) db such as when used with a night setback thermostat. Return−air temperature must not exceed 80°F (27°C) db. Failure to follow these return−air temperature limits may affect reliability of heat exchangers, motors, and controls (See Figure 1)

The furnace should be sized to provide 100 percent of the design heating load requirement plus any margin that occurs because of furnace model size capacity increments. 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.

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

NOTE: Remove all shipping materials, parts assemblies and literature before operating the furnace.

Figure 1

32° F/0° C MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED

Freeze Protection and Return Air Temperature

SUPPLY AIR

MAX 80°F/27°C

MIN 60°F/16°C

A10490

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 and Canada, follow all codes and standards for the following:

Safety

 US: National Fuel Gas Code (NFGC) NFPA

54−2009/ANSI Z223.1−2009 and the Installation Standards, Warm Air Heating and Air Conditioning Systems ANSI/NFPA 90B

 CANADA: National Standard of Canada, Natural Gas

and Propane Installation Code (NSCNGPIC) CAN/CSA B149.1−2010

General Installation

 US: NFGC and the NFPA 90B. For copies, contact the

National Fire Protection Association Inc., Batterymarch Park, Quincy, MA 02269; or for only the NFGC contact the American Gas Association, 400 N. Capitol, N.W., Washington DC 20001.

 CANADA: NSCNGPIC. For a copy, contact Standard

Sales, CSA International, 178 Rexdale Boulevard, Etobicoke (Toronto), Ontario, M9W 1R3, Canada.

Combustion and Ventilation Air

 US: Section 9.3 of the NFPA54/ANSI Z223.1−2009,

Air for Combustion and Ventilation

 CANADA: Part 8 of the CAN/CSA B149.1−2010,

Venting Systems and Air Supply for Appliances

4 440 01 4300 00

Specifications subject to change without notice.

Page 5

Duct Systems

 US and CANADA: Air Conditioning Contractors

Association (ACCA) Manual D, Sheet Metal and Air Conditioning Contractors National Association (SMACNA), or American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) 2005 Fundamentals Handbook Chapter 35.

Acoustical Lining and Fibrous Glass Duct

 US and CANADA: current edition of SMACNA, NFPA

90B as tested by UL Standard 181 for Class I Rigid Air Ducts

Gas Piping and Gas Pipe Pressure Testing

 U.S.A.: NFPA 54/ANSI Z223.1−2009, NFGC; Chapters

5, 6, 7, and 8 and national plumbing codes.

 CANADA: CAN/CSA−B149.1−2010, Parts 4, 5, 6 and

In the state of Massachusetts:

 This product must be installed by a licensed plumber or

gas fitter.

 When flexible connectors are used, the maximum

length shall not exceed 36−in. (914 mm).

 When lever type gas shutoffs are used they shall be

T−handle type.

 The use of copper tubing for gas piping is not

approved by the state of Massachusetts.

Electrical Connections

 U.S.A.: National Electrical Code (NEC) ANSI/NFPA

70−2011

 CANADA: Canadian Electrical Code CSA C22.1

Electrostatic Discharge (ESD) Precautions Procedure

! CAUTION

FURNACE RELIABILITY HAZARD

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

Electrostatic discharge can affect electronic components. Take precautions 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 disconnects 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 will be satisfactorily discharged.

3. After touching the chassis, you may proceed to service the control or connecting wires as long as you do nothing to recharge your body with static electricity (for example; 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, unpainted metal surface of the furnace again before touching control or wires.

5. Use this procedure for installed and uninstalled (ungrounded) furnaces.

6. Before removing a new control from its container, discharge 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 furnace. Put all used and new controls into containers before touching ungrounded objects.

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

Accessories

See Specification Sheets for a list of accessories for this product.

Table 2

QUANTITY COMPONENT NAME

1 Air Intake Pipe Flange 1 Vent Pipe Flange 2 Coupling Flange Gaskets

10 Sharp Tip Screws (Vent and Inlet Flanges)

1 Vent Pipe Coupling 2 Vent Pipe Coupling Clamps 1 Rubber Drain Tube 4 Drain Tube Clamps 1 1/2” CPVC to 3/4” PVC Pipe Adapter 1 Gas Line Grommet 1 Junction Box Cover 1 Junction Box Base 1 Green Ground Screw 3 Blunt Tip Screws (Junction Box) 1 Thermostat Wire Grommet

Provided separately in furnace

1 Drain Extension Tube − “Z” Pipe

Loose Parts Bag Contents (shipped in blower compartment)

440 01 4300 00 5

Specifications subject to change without notice.

Page 6

Figure 2 Dimensions

(F/G)9MAE

FURNACE SIZE

A B C D

CABINET

WIDTH

0601714 17−1/2 (445) 15−7/8 (403) 16 (406) 8 3/4 (222) 154 (69) 0602120 21 (533) 19−3/8 (492) 19−1/2 (495) 10 1/2 (267) 159 (72) 0801714 17−1/2 (445) 15−7/8 (403) 16 (406) 8 3/4 (222) 164 (74) 0802120 21 (533) 19−3/8 (492) 19−1/2 (495) 10 1/2 (267) 169 (77) 1002122 21 (533) 19−3/8 (492) 19−1/2 (495) 10 1/2 (267) 179 (80) 1202422 24−1/2 (622) 22−7/8 (581) 23 (584) 12 1/4 (311) 203 (91)

6 440 01 4300 00

OUTLET WIDTH

Specifications subject to change without notice.

BOTTOM

INLET WIDTH

AIR INTAKE

SD5060−4 Rev F

SHIP WT.

LB (KG)

Page 7

Location

! CAUTION

PERSONAL INJURY AND/OR PROPERTY DAMAGE HAZARD

Improper use or installation of this furnace may result in premature furnace component failure. 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.

General

These furnaces are shipped with materials to assist in proper furnace installation. These materials are shipped in the main blower compartment.

See Table 2 for loose parts bag contents. This furnace must:

• be installed so the electrical components are protected from water.

• not be installed directly on any combustible material other than wood flooring (refer to SAFETY CONSIDERATIONS).

• be located close to the chimney or vent and attached to an air distribution system. Refer to Air Ducts section.

• be provided ample space for servicing and cleaning. Always comply with minimum fire protection clearances shown in Table 1 or on the furnace clearance to combustible construction label.

! WARNING

CARBON MONOXIDE POISONING / COMPONENT 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.

The following types of furnace installations may require OUTDOOR AIR for combustion due to chemical 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

• 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.

440 01 4300 00 7

Specifications subject to change without notice.

Page 8

Figure 3 Multipoise Orientations

THE BLOWER IS LOCATED

TO THE RIGHT OF THE

BURNER SECTION, AND

CONDITIONED AIR IS

DISCHARGED TO THE LEFT.

THE BLOWER IS

LOCATED BELOW THE

BURNER SECTION, AND

CONDITIONED AIR IS

DISCHARGED UPWARD.

THE BLOWER IS

LOCATED ABOVE THE

BURNER SECTION, AND

CONDITIONED AIR IS

DISCHARGED DOWNWARD.

! WARNING

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 or CAN/CSA B149.1−2010. (See Figure 4)

Figure 4 Installation in a Garage

THE BLOWER IS

LOCATED TO THE LEFT

OF THE BURNER SECTION,

AND CONDITIONED AIR IS

DISCHARGED TO THE RIGHT.

Figure 5 Prohibited Installations

BACK POSITIONED DOWNWARD

BACK POSITIONED UPWARD

L12F010

AIR RETURN CUT IN BACK

L12F011

! WARNING

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 5)

8 440 01 4300 00

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

A93044

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

Introduction

Direct Vent (2−Pipe) Applications

When the furnace is installed as a direct vent (2-pipe) furnace, no special provisions for air for combustion are required. However, other gas appliances installed in the space with the furnace may require outside air for combustion. Follow the guidelines below to insure that other gas appliances have sufficient air for combustion.

Specifications subject to change without notice.

Page 9

Ventilated Combustion Air Applications

When the furnace is installed using the ventilated combustion air option, the attic or crawlspace must freely communicate with the outdoor to provide sufficient air for combustion. The combustion air pipe cannot be terminated in attics or crawlspaces that use ventilation fans designed to operate during the heating season. If ventilation fans are present in these areas, the combustion air pipe must terminate outdoors as a Direct Vent/ 2-Pipe system.

All air for combustion is piped directly to the furnace from a space that is well ventilated with outdoor air (such as an attic, crawlspace, or equipment closet) and the space is well isolated from the living space or garage. In addition, other gas appliances installed in the space with the furnace may require outside air for combustion. Follow the guidelines below to insure that the roof or crawlspace walls have sufficient free area to provide sufficient air for combustion and ventilation for the furnaces. The guidelines below can be used to insure that other gas appliances have sufficient air for combustion.

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

• U.S. Installations: Section 9.3 of the NFPA 54/ANSI

Z223.1−2009 , Air for Combustion and Ventilation and applicable provisions of the local building codes.

• Canadian Installations: Part 8 of

CAN/CSA−B149.1−2010, Venting Systems and Air Supply for Appliances and all authorities having jurisdiction.

! CAUTION

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.

Figure 6

*Minimum dimensions of 3‐in. (76mm)

NOTE: Use any of the following combinations of openings:

A & B, C & D, D & E, F & G

Air for Combustion, Ventilation, and Dilution for Outdoors

Figure 7 Combustion Air Pipe

Point elbow down towards back of furnace

L12F012

! WARNING

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 the Carbon Monoxide Poisoning Hazard warning in the venting section of these instructions to determine if an adequate amount of make−up air is available.

12” MINIMUM

256.0 mm

CASING SIDE ATTACHMENT COMBUSTION AIR PIPE (ATTIC, CRAWL SPACE, OR EQUIPMENT CLOSET ONLY. See AIR FOR COMBUSTION AND VENTILATION Section)

TOP PLATE ATTACHMENT COMBUSTION AIR PIPE (ATTIC, CRAWL SPACE, OR EQUIPMENT CLOSET ONLY. See AIR FOR COMBUSTION AND VENTILATION Section)

L12F014

440 01 4300 00 9

Specifications subject to change without notice.

Page 10

Outdoor Combustion Air Method

1. Provide the space with sufficient air for proper combustion, ventilation, and dilution of flue gases using permanent horizontal or vertical duct(s) or opening(s) directly communicating with the outdoors or spaces that freely communicate with the outdoors.

2. Figure 6 illustrates how to provide TWO OUTDOOR OPENINGS, one inlet and one outlet combustion and ventilation air openings to the outdoors.

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 6 and Table 3. c. TWO HORIZONTAL DUCTS require 1 square inch

(25.4 square mm) of free area per 2,000 Btuh (1,100

/kW) of combined input for all gas appliances in

the space per Figure 6 and Table 3.

d. TWO OPENINGS OR VERTICAL DUCTS require 1

square inch (25.4 square mm)of free area per 4,000 Btuh (550 mm

/kW) for combined input of all gas

appliances in the space per Figure 6 and Table 3.

3. ONE OUTDOOR OPENING requires: a. 1 sq. in. (25.4 square mm)of free area per 3,000 Btuh

(734 mm

/kW) for combined input of all gas

appliances in the space per Table 3 and

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

connectors 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.

Table 3 Minimum Free Area Required for Each Combustion Air Opening or Duct to Outdoors

TWO OPENINGS OR

VERTICAL DUCTS

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

(550 SQ. MM/KW)

Free Area of Open-

ing and Duct

Sq. In (mm)

FURNACE

INPUT

(BTUH)

60,000

80,000 100,000 120,000 140,000

TWO HORIZONTAL DUCTS

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

(1,100 SQ. MM/KW)

Free Area of

Opening and Duct

Sq. In (Sq. mm)

Round

In. (mm)

Duct

Dia

SINGLE DUCT OR OPENING

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

(734 SQ. MM/KW)

Free Area of Open-

ing and Duct

Sq. In (Sq. mm)

Round

In. (mm)

Duct

Dia 30 (19355) 6 (152) 20 (13043) 5 (127) 15 (9678) 5 (127) 40 (25807) 7 (178) 27 (17391) 6 (152) 20 (12904) 5 (127) 50 (32258) 8 (203) 34 (21739) 7 (178) 25 (16130) 6 (152) 60 (38709) 9 (229) 40 (26087) 7 (178) 30 (19355) 6 (152) 70 (45161) 10 (254) 47 (30435) 8 (203) 35 (22581) 7 (178)

Round Duct

In. (mm)

Dia.

EXAMPLE: Determining Free Area

FURNACE WATER HEATER TOTAL INPUT

100,000 + 30,000 = (130,000 divided by 4,000) = 32.5 Sq. In. for each two Vertical Ducts or Openings

60,000 + 40,000 = (100,000 divided by 3,000) = 33.3 Sq. In. for each Single Duct or Opening 80,000 + 30,000 = (110,000 divided by 2,000) = 55.0 Sq. In. for each two Horizontal Ducts

Table 4 Minimum Space Volumes for 100% Combustion, Ventilation and Dilution Air from Outdoors

OTHER THAN FAN‐ASSISTED TOTAL

(1,000'S BTUH GAS INPUT RATE)

ACH

0.60

0.50

0.40

0.30

0.20

0.10

0.00

NP = Not Permitted

30 40 50 40 60 80 100 120 140

Space Volume Ft

1,050 (29.7)

1,260 (35.6)

1,575 (44.5)

2,100 (59.4)

3,150 (89.1)

6,300

(178.0)

1,400 (39.6)

1,680 (47.5)

2,100 (59.4)

2,800 (79.2)

4,200

(118.9)

8,400

(237.8)

1,750

(49.5)

2,100 (59.4)

2,625 (74.3)

3,500 (99.1)

5,250

(148.6) 10,500

(297.3)

1,400 (39.6)

1,680 (47.5)

2,100 (59.4)

2,800 (79.2)

4,200

(118.9)

8,400

(237.8)

1,500 (42.5)

1,800 (51.0)

2,250 (63.7)

3,000 (84.9)

4,500

(127.3)

9,000

(254.6)

NP NP NP NP NP NP NP NP NP

FAN‐ASSISTED TOTAL

(1,000'S BTUH GAS INPUT RATE)

)

2,000

(56.6)

2,400

(67.9)

3,000

(84.9)

4,000

(113.2)

6,000

(169.8) 12,000

(339.5)

2,500 (70.8)

3,000 (84.9)

3,750

(106.1)

5,000

(141.5)

7,500

(212.2) 15,000

(424.4)

3,000 (84.9)

3,600

(101.9)

4,500

(127.3)

6,000

(169.8)

9,000

(254.6) 18,000

(509.2)

3,500 (99.1)

4,200

(118.9)

5,250

(148.6)

7,000

(198.1) 10,500

(297.1) 21,000

(594.1)

10 440 01 4300 00

Specifications subject to change without notice.

Page 11

CONDENSATE TRAP

! CAUTION

FROZEN AND BURST WATER PIPE HAZARD

Failure to protect against the risk of freezing may result in property damage.

Special precautions MUST be made if installing furnace in an area which may drop below freezing. This can cause improper operation or damage to equipment. If furnace environment has the potential of freezing, the drain trap and drain line must be protected. The use of accessory drain trap heaters, electric heat tape and/or RV antifreeze is recommended for these installations.

! CAUTION

PROPERY DAMAGE HAZARD

Failure to follow this caution may result in burst water pipes and/or property damage.

If a condensate pump is installed, a plugged condensate drain or a failed pump may cause the furnace to shut down. Do not leave the home unattended during freezing weather without turning off water supply and draining water pipes or otherwise protecting against the risk of frozen pipes.

DO NOT trap the drain line in any other location than at the condensate drain trap supplied with the furnace. If possible, DO NOT route the drain line where it may freeze. The drain line must terminate at an inside drain to prevent freezing of the condensate and possible property damage.

Figure 8 Upflow Trap Configuration

Condensate Trap

Relief Port

Special precautions MUST be made if installing furnace in an area which may drop below freezing. This can cause improper operation or damage to the equipment. If the furnace environment has the potential of freezing, the drain trap and drain line must be protected. Use 3 to 6 watt per foot of 115 volt, 40° F (4° C) self−regulating shielded and water proof heat tape. Wrap the drain trap and drain line with the heat tape and secure with the ties. Follow the heat tape manufacturer’s recommendations. Prime the trap before furnace operation.

Condensate Trap − Upflow Orientation

When the furnace is installed in the upflow position, it is not necessary to relocate the condensate trap or associated tubing. See Figure 8 for upflow condensate trap information. Refer to Condensate Drain section for information how to install the condensate drain.

Condensate Trap − Downflow Orientation

When the furnace is installed in the downflow position, the condensate trap will be initially located at the upper left corner of the collector box, as received from the factory. See the top image in Figure 9. When the furnace is installed in the downflow orientation, the condensate trap must be relocated for proper condensate drainage. See bottom image in Figure 9.

To Relocate the Condensate Trap:

 Orient the furnace in the downflow position.  Figure 9 shows the condensate trap and tubing before and

after relocation. Refer to Figure 9 to begin the trap conversion.

 Refer to Condensate Drain section for information how to install

the condensate drain.

Vent Pipe Clamp

Vent Elbow Clamp

Collector Box

Plugs

Pressure Switch

Port

Representative drawing only, some models may vary in appearance.

Vent Elbow

Collector Box

Plug

Condensate Trap

Relief Port

Condensate Trap

Outlet

A11306

440 01 4300 00 11

Specifications subject to change without notice.

Page 12

Figure 9 Unconverted Factory Configuration as viewed in the Downflow Orientation

Remove pressure switch tube from pressure switch port.

Remove relief tube from relief port on condensate trap.

Remove trap from collector box.

Loosen clamp on inlet to vent elbow.

Install plugs on open ports on collector box.

Connect relief tube to port on collector box.

Rotate elbow to desired position and

tighten clamp to 15 lb.−in.

Slide tube in stand−offs to adjust length.

Representative drawing only, some models may vary in appearance.

Downflow Trap Configuration

Align condensate trap over middle and bottom ports of collector box.

Remove tube from relief port.

Remove middle and bottom plugs. DO NOT DISCARD.

A11585A

Trim excess tube.

Connect pressure switch tube to port on collector box.

Attach condensate trap with screw to collector box.

Connect relief tube to relief port on condensate trap.

Representative drawing only, some models may vary in appearance.

12 440 01 4300 00

A11585B

Specifications subject to change without notice.

Page 13

Condensate Trap − Horizontal Orientation

When the furnace is installed in the horizontal right position, the condensate trap will be initially located at the bottom of the collector box, as received from the factory. See the top image in Figure 11. When the furnace is installed in the horizontal left position, the condensate trap will be initially located at the top of the collector box, as received from the factory. See the top image in Figure 10. In both cases trap must be repositioned on the collector box for proper condensate drainage. See bottom images in Figure 10 and Figure 11.

A field−supplied, accessory Horizontal Installation Kit (trap grommet) is required for all direct−vent horizontal installations (only). The kit contains a rubber casing grommet designed to seal between the furnace casing and the condensate trap. (See

Figure 17)

NOTICE

The field-supplied, accessory horizontal drain trap grommet is ONLY REQUIRED FOR DIRECT VENT APPLICATIONS. It is NOT required for applications using single-pipe or ventilated combustion air venting.

NOTICE

NOTE: The condensate trap extends below the side of the

casing in the horizontal position. A minimum of 2 in. (51 mm) of clearance is required between the casing side and the furnace platform for the trap to extend out of the casing in the horizontal position. Allow at least 1/4−in. (6 mm) per foot of slope away from the furnace in horizontal sections of drain line.

To Relocate the Condensate Trap:

 Remove the knockout in the casing for the condensate trap.  Install the grommet in the casing when required for direct−vent

horizontal applications.

 Orient the furnace in the desired position.  Allow for 2 in. (51 mm) of clearance underneath the furnace for

the condensate trap and drain line.

 Figure 10 shows the condensate trap and tubing before and

after relocation in the horizontal right position.

 Figure 11 shows the condensate trap and tubing before and

after relocation in the horizontal left position.

 Refer to the appropriate figure to begin the trap conversion.  Refer to Condensate Drain section for information how to install

the condensate drain.

The condensate trap extends below the side of the casing in the horizontal position. A minimum of 2-in. (51 mm) of clearance is required between the casing side and the furnace platform for the trap to extend out of the casing in the horizontal position. Allow at least 1/4-in. per foot (20mm per meter) of slope down and away from the furnace in horizontal sections of drain line.

Figure 10 Unconverted Factory Configuration as viewed in the Horizontal Left Orientation

Remove trap from

If alternate vent position is required, loosen clamp on vent elbow inlet.

collector box.

Remove relief tube from relief port on condensate trap.

Remove pressure switch tube from port on collector box.

Remove relief tube from port on collector box.

Representative drawing only, some models may vary in appearance.

440 01 4300 00 13

Specifications subject to change without notice.

Remove middle and right plug from collector box. DO NOT DISCARD

A11586A

Page 14

Figure 10 − continued Horizontal Left Trap Configuration

Rotate elbow to desired position and torque clamp on inlet 15 lb.−in.

Slide relief tube in stand−offs to adjust length.

Install plugs in open ports on collector box.

Connect relief tube to port on collector box.

Attach condensate trap to collector box with screw.

Align trap over middle and right−hand port on collector box.

Representative drawing only, some models may vary in appearance.

Trim excess tube. Route pressure switch tube underneath relief tube and connect to port on collector box.

Connect relief tube to relief port on condensate trap.

Figure 11 Unconverted Factory Configuration as viewed in the Horizontal Right Orientation

Remove plug from collector box. DO NOT DISCARD.

If alternate vent position is required, loosen clamp on inlet of vent elbow.

A11586B

Representative drawing only, some models may vary in appearance.

14 440 01 4300 00

Remove trap from collector box.

Specifications subject to change without notice.

Page 15

Figure 11 − continued Horizontal Right Trap Configuration

Slide relief tube in stand-offs to adjust length.

Attach condensate trap to collector box with screw.

Install plug in open port on collector box.

Representative drawing only, some models may vary in appearance.

Condensate Drain Connection

! CAUTION

FROZEN AND BURST WATER PIPE HAZARD

Failure to protect against the risk of freezing may result in property damage.

! CAUTION

PROPERY DAMAGE HAZARD

Failure to follow this caution may result in burst water pipes and/or property damage.

Special precautions MUST be made if installing furnace in an area which may drop below freezing. This can cause improper operation or damage to the equipment. If the furnace environment has the potential of freezing, the drain trap and drain line must be protected. A self−regulating, shielded and waterproof heat tape rated at 3 to 6 watt per foot (10 to 20 watt per meter) at 115 volt, 40° F (4° C) may be used to help provide freeze protection. Wrap the drain trap and drain line with the

440 01 4300 00 15

Vent elbow shown in alternate orientation. Tighten clamp on inlet to vent elbow 15 lb.-in.

Align trap over middle and right-hand port on collector box.

A11281

heat tape and secure with appropriate plastic ties. Follow the heat tape manufacturer’s recommendations. Prime the trap before furnace operation.

Upflow/Downflow Orientation

In the Upflow or Downflow orientation, the condensate trap is inside the furnace casing. The condensate drain must be routed from the trap through the furnace casing. The condensate drain can be routed through the left or right side of the casing. (The left or right side is as you are viewing/facing the furnace from the front.) The furnace condensate drain can be connected to the indoor coil condensate drain, humidifier or auxiliary drain traps as shown in Figure 12.

NOTE: On narrower casings, it may be easier to remove the condensate trap, connect the drain line components and re-install the condensate trap. Read the steps thoroughly to familiarize yourself with the required steps.

For Right Side Condensate Drain:

1. Remove the 7/8−in. knock−out from the right side of the

casing. (See Figure 13 for suggested knockout removal technique.)

2. Remove the pre−formed rubber drain tube and two spring clamps from the loose parts bag.

3. Slide a spring clamp 1 in. (25 mm) down the plain end (the end without the formed grommet) of the drain tube.

4. From inside the casing, insert the formed grommet end of the elbow through the 7/8−in. knockout in the casing.

5. Pull the grommet through the casing from the outside until it is seated in the knockout

6. Attach the plain end of the drain elbow to the outlet stub on the drain trap. Secure the drain elbow to the trap with the spring clamp.

The remaining drain line can be constructed from field supplied 1/2−in. CPVC or 3/4−in. PVC pipe in compliance with local building codes. A factory−supplied 1/2−in. CPVC to 3/4−in PVC adapter is supplied in the loose parts bag for use as required.

7. Install the adapter or connect the 1/2−in. CPVC pipe by sliding a spring clamp over the open end of the grommet on the outside of the furnace casing.

Specifications subject to change without notice.

Page 16

8. Open the spring clamp and insert the long end of the adapter of the 1/2−in. CPVC pipe into the outlet stub on the drain tube.

9. Connect additional condensate piping to a code−approved drain, or to a condensate pump approved for use with acidic furnace condensate and compatible with mineral and vegetable oils, such as canola oil.

Allow at least 1/4−in. per foot (20 mm per meter) of slope down and away from the furnace in horizontal sections of drain line.

Figure 12 Example of Field Drain Attachment

OPEN STAND PIPE FOR A/C OR HUMIDIFIER DRAIN

TEE

TO OPEN DRAIN

A11276

TIPS FROM CONTRACTORS: Contractors have found that temporarily removing the inducer assembly in upflow applications while performing the steps below, makes upflow left−side drain connections easier.

For Left Side Condensate Drain Connection:

1. For left side condensate drainage, the drain line is routed from the condensate trap, behind the inducer (upflow) or gas valve (downflow) and out through the left side of the furnace casing. A pre-formed 1/2−in. CPVC “Z” pipe is provided with the furnace. The “Z“ pipe is long enough to extend across the casing for drain connections.

2. Locate the “Z” pipe. Remove the pre-formed drain tube and four spring clamps from the loose parts bag.

3. The “Z” pipe is connected to the condensate trap and the outside of the furnace by modifying the formed rubber

drain tube as shown in Figure 14.

4. Remove the formed grommet from the rubber drain tube by cutting the elbow along the vertical line located about 1 3/8−in. (35 mm) away from the formed grommet. See Figure 13. DO NOT DISCARD THE FORMED GROMMET OR THE RUBBER ELBOW. Both of these pieces will be used.

Assemble and route the drain line to the opposite side of the furnace as detailed below:

5. Remove the knock−out from the left side of the casing. (See Figure 13 for suggested knockout removal technique.)

6. From the outside of the casing, insert the angled end of the ”Z” pipe through drain hole in the left side of the casing and behind the inducer or gas valve. Allow the ”Z” pipe to temporarily rest on the blower shelf (upflow) or burner box (downflow). (NOTE: When the inducer

housing has been removed to ease installation in upflow applications, this step is not needed.)

7. After inserting the “Z” pipe through the casing, slide a spring clamp over each end of the “Z” pipe.

8. From inside the casing, insert the short end of the formed grommet cut from the rubber drain tube through the 7/8−in. drain knockout in the casing.

9. Pull the grommet through the casing from the outside until it is seated in the knockout.

10. Align the ”Z” pipe with the long end of the grommet inside the furnace and insert slightly. The angled end of the tube at the other side of the casing should be facing the front of the furnace.

11. Slide a spring clamp over the end of the remaining rubber drain tube.

12. Attach the drain tube to the angled end of ”Z” pipe and the drain trap outlet stub. Adjust the length of ”Z” pipe inserted into the grommet at the opposite side of the furnace as necessary for proper fit and positioning. In both upflow and downflow orientations, the ”Z” pipe should NOT be resting on any sheet metal parts.

13. Secure the rubber elbow to the drain trap and the ”Z” pipe with spring clamps.

14. Secure the grommet to the ”Z” pipe with the spring clamp.

The remaining drain line can be constructed from field supplied 1/2−in. CPVC or 3/4−in. PVC pipe, in compliance with local building codes. A factory−supplied 1/2−in. CPVC to 3/4−in. PVC adapter is supplied in the loose parts bag for use as required.

15. Install the adapter or connect the 1/2−in. CPVC pipe by sliding a spring clamp over the open end of the grommet on the outside the furnace casing.

16. Open the spring clamp and insert the long end of the adapter or the 1/2−in. CPVC pipe into the outlet stub on the drain tube.

17. Connect additional condensate piping to a code−approved drain, or to a condensate pump approved for use with acidic furnace condensate and compatible with mineral and vegetable oils, such as canola oil.

Allow at least 1/4-in. per foot (20 mm per meter) of slope down and away from the furnace in horizontal sections of drain line.

NOTICE

The field-supplied, accessory horizontal drain trap grommet is ONLY REQUIRED FOR DIRECT VENT APPLICATIONS. It is NOT required for applications using single-pipe or ventilated combustion air venting.

TIPS FROM CONTRACTORS: When installing the furnace horizontally, use the entire drain elbow (that is, do NOT cut as shown in Figure 14) to connect the trap to the drain line. This helps to prevent bumps and shocks to the drain line from damaging the furnace drain trap. Avoid misalignment of the drain pipe which may cause kinks in the elbow.

Horizontal Orientation

1. The condensate trap outlet extends 2−in. (51 mm) below the furnace casing. Leave enough clearance between the furnace and the furnace platform for the trap.

2. To allow for servicing the trap, the condensate drain elbow in the loose parts bag can be used to make a coupler to allow for future service of the condensate trap and drain line.

16 440 01 4300 00

Specifications subject to change without notice.

Page 17

3. Remove the knock−out for the condensate trap in the side of the casing.

4. Install the drain trap grommet in the casing, if required for direct−vent applications. If necessary, remove the trap, install the grommet and re−install the trap.

5. Remove the pre−formed rubber drain tube and two spring clamps from the loose parts bag.

6. Connect the full or modified elbow and/or grommet to the outlet of the condensate trap with one spring clamp. Avoid misalignment of the drain pipe which may cause kinks in the elbow or grommet.

7. The remaining drain line can be constructed from field supplied 1/2−in. CPVC or 3/4−in. PVC pipe, in compliance with local building codes. A factory−supplied 1/2−in. CPVC to 3/4−in. PVC adapter is supplied in the loose parts bag for use as required.

8. Install the adapter or connect the 1/2−in. CPVC pipe by sliding a spring clamp over the open end of the elbow or grommet on the outside the furnace casing.

9. Open the spring clamp and insert the long end of the adapter or the 1/2−in. CPVC pipe into the outlet stub on the drain tube.

10. Connect additional condensate piping to a code−approved drain, or to a condensate pump approved for use with acidic furnace condensate and compatible with mineral and vegetable oils, such as canola oil.

Allow at least 1/4-in. per foot (20 mm per meter) of slope down and away from the furnace in horizontal sections of drain line.

Figure 13 Knockout Removal

Figure 14 Modify Rubber Drain Elbow

Cut line for left side condensate drain. Do not discard parts after cutting.

1−3/8 in (35 mm)

L11F089

Figure 15 Drain Trap Connection and Routing

Attach elbow to condensate trap

Cut formed end off

Formed end of grommet

condensate drain elbow

Connect short end of “Z” pipe to modified drain elbow

L12F019

! CAUTION

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 servicing furnaces.

Factory supplied 1/2−in. CPVC to 3/4−in. PVC adapter

TRAP, DRAIN ELBOW WITH DISCHARGE PIPE

Formed end of grommet Open spring clamp. Insert 1/2−in. to 3/4−in. CPVC to PVC adapter or 1/2−in. CPVC pipe

LEFT SIDE DRAIN ROUTED BEHIND INDUCER

NOTE: Remove Inducer Housing for easier access, if desired.

Modified drain elbow connect to condensate trap and “Z” pipe

L12F015

440 01 4300 00 17

Specifications subject to change without notice.

Page 18

Figure 16 Formed Rubber Drain Grommet

INSTALL CLAMPS ON DRAIN ELBOW ATTACH DRAIN ELBOW TO CONDENSATE DRAIN TRAP

PULL DRAIN STUB THROUGH CASING

Figure 18 Furnace Pitch Requirements

LEVEL 0-IN. (0 MM) TO 1/2-IN. (13 MM) MAX

MIN 1/4-IN. (6 MM) TO 1/2-IN. (13 MM) MAX

OPEN SPRING CLAMP

INSERT FACTORY−SUPPLIED 1/2−IN. CPVC TO 3/4−IN. PVC ADAPTER OR 1/2−IN. CPVC PIPE

*CLAMP MAY BE LOCATED ON OUTSIDE OF DRAIN ELBOW

L12F022

Figure 17 Horizontal Drain Trap Grommet

Remove knockout. Install grommet before relocating condensate trap.

A11348

INSTALLATION

NOTICE

This furnace is certified to leak 2% or less of nominal air conditioning CFM delivered when pressurized to 1-inch water column (250 Pa) with all present air inlets (including bottom closure in upflow and horizontal applications), air outlets, and plumbing and electrical ports sealed.

UPFLOW INSTALLATION

NOTE: The furnace must be pitched as shown in Figure 18 for

proper condensate drainage.

UPFLOW OR DOWNFLOW

HORIZONTAL

A11237

Supply Air Connections

Connect supply−air duct to flanges on furnace supply−air outlet. Bend flange upward to 90 with wide duct pliers. (See Figure 22) The supply−air duct must be connected to ONLY the furnace supply−outlet−air duct flanges or air conditioning coil casing (when used). DO NOT cut main furnace casing side to attach supply air duct, humidifier, or other accessories. All supply−side accessories MUST be connected to duct external to furnace main casing.

Return Air Connections

! WARNING

FIRE HAZARD

A failure to follow this warning could cause personal injury, death and/or property damage.

Never connect return−air ducts to the back of the furnace. Follow instructions below.

The return−air duct must be connected to bottom, sides (left or right), or a combination of bottom and side(s) of main furnace casing. Bypass humidifier may be attached into unused return air side of the furnace casing. (See Figure 27, Figure 28 and

Figure 29)

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom return−air opening. Remove this panel when bottom return air is used. This panel may be used as the bottom closure of an accessory bottom return air box or discarded. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove four (4) screws holding

bottom plate. (See Figure 19)

2. Remove bottom plate.

3. Remove bottom closure panel.

4. Reinstall bottom plate and screws.

18 440 01 4300 00

Specifications subject to change without notice.

Page 19

Figure 19 Removing Bottom Closure Panel

BOTTOM PLATE

L11F004

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. (See Figure 27,

Figure 28 and Figure 29)

Leveling Legs (If Desired)

In upflow position with side return inlet(s), leveling legs may be used. (See Figure 20) Install field−supplied, 5/16 x 1−1/2 in. (8 x 38 mm) (max) corrosion−resistant machine bolts, washers and nuts.

Figure 20 Leveling Legs

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

4. Adjust outside nut to provide desired height, and tighten inside nut to secure arrangement.

5. Reinstall bottom closure panel if removed.

DOWNFLOW INSTALLATION

NOTE: The furnace must be pitched as shown in Figure 18 for

proper condensate drainage.

Supply Air Connections

NOTE: For downflow applications, this furnace is approved for

use on combustible flooring when any one of the following two accessories are used (see Specification sheets for list of approved accessories):

• Special Base − NAHA01101SB

• Cased Coil Assembly − EAM4X, END4X, ENW4X

1. Determine application being installed from Table 5.

2. Construct hole in floor per Table 5 and Figure 21.

3. Construct plenum to dimensions specified in Table 5 and Figure 21.

4. Install as shown in Figure 23. If Coil Assembly Part is used, install as shown in Figure 24 .

Figure 21

Floor and Plenum Opening Dimensions

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 Step 1 in Bottom Return Air Inlet section.

To install leveling legs:

1. Position furnace on its back. Locate and drill a hole in each bottom corner of furnace.

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

440 01 4300 00 19

NOTE: It is recommended that the perforated supply−air duct flanges be completely removed from furnace when installing the furnace on a factory−supplied cased coil. 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 22)

! CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

A89014

Specifications subject to change without notice.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts, and servicing furnaces.

Connect supply−air duct to supply−air outlet on furnace. Bend flange inward past 90 with wide duct pliers (See Table 1 Figure 22) The supply−air duct must be connected to ONLY the furnace supply outlet or air conditioning coil casing (when used). When installed on combustible material, supply−air duct must be connected to ONLY the factory−approved accessory subbase, or a factory−approved air conditioning coil casing. DO NOT cut main furnace casing to attach supply side air duct,

A96283

Page 20

humidifier, or other accessories. All supply−side accessories MUST be connected to duct external to furnace casing.

Return Air Connections

! WARNING

FIRE HAZARD

A failure to follow this warning could cause personal injury, death and/or property damage.

Never connect return−air ducts to the back of the furnace. Follow instructions below.

The return−air duct must be connected to return−air opening (bottom inlet) as shown in Figure 27. DO NOT cut into casing

Figure 22 Duct Flanges

UPFLOW DOWNFLOW HORIZONTAL

PERFORATED DISCHARGE DUCT FLANGE

90°

sides (left or right). Bypass humidifier connections should be made at ductwork or coil casing sides exterior to furnace. (See

Figure 27)

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 in downflow applications. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove four (4) screws holding

bottom plate panel. (See Figure 19)

2. Remove bottom plate.

3. Remove bottom closure panel.

4. Reinstall bottom plate and screws.

90°

Table 5 Opening Dimensions − in. (mm)

FURNACE

CASING WIDTH

IN. (mm)

17–1/2

(445)

(533)

24−1/2

(622)

Upflow Applications on Combustible or Noncombustible Flooring

Downflow Applications on Noncombustible Flooring

Downflow applications on combustible flooring (subbase required)

Downflow Applications on Combustible Flooring with Coil Assembly or coil

Upflow Applications on Combustible or Noncombustible Flooring

Downflow Applications on Noncombustible Flooring

Downflow applications on combustible flooring

Downflow Applications on Combustible Flooring with Coil Assembly or coil

Upflow Applications on Combustible or Noncombustible Flooring

Downflow Applications on Noncombustible Flooring

Downflow applications on Combustible flooring

Downflow Applications on Combustible Flooring with Coil Assembly or

(subbase not required)

box (subbase not required)

(subbase not required)

box (subbase not required)

(subbase not required)

coil box (subbase not required)

20 440 01 4300 00

YES

120°

MIN

APPLICATION

(subbase required)

Specifications subject to change without notice.

YES

120° MIN

YES

PLENUM OPENING FLOOR OPENING

A B C D

(406)

15−7/8

(403)

15−1/8

(384)

15−1/2

(394)

19−1/2

(495)

19−3/8

(492)

18−5/8

(473)

(483)

(584)

22−7/8

(581)

22−1/8

(562)

22−1/2

(572)

21−5/8

21−1/8

(549)

(483)

(549)

(483)

(537)

(483)

120° MIN

16−5/8

(422)

16−1/2

(419)

16−3/4

(425)

16−1/2

(419)

20−1/8

(511)

(508)

20−1/4

(514)

(508)

23−5/8

(600)

23−1/2

(597)

23−3/4

(603)

23−1/2

(597)

A10493

22−1/4

(565)

19−5/8

(498)

20−5/8

(600)

(508)

22−1/4

(565)

19−5/8

(498)

20−5/8

(600)

(508)

22−1/4

(565)

19−5/8

(498)

20−5/8

(600)

(508)

YES

Page 21

Figure 23

Furnace, Plenum, and Subbase Installed on a Combustible Floor

Figure 24

Furnace, Plenum, and Coil Assembly on a Combustible Floor

EAM4X, END4X, ENW4X

A96285

HORIZONTAL INSTALLATION

NOTE: The furnace must be pitched forward as shown in Figure 18 for proper condensate drainage.

! WARNING

FIRE, EXPLOSION, AND CARBON MONOXIDE POISONING HAZARD

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

! CAUTION

MINOR PROPERTY HAZARD

Failure to follow this caution may result in minor property damage.

Local codes may require a drain pan under entire furnace and condensate trap when a condensing furnace is used in an attic application or over a finished ceiling.

L11F104

! WARNING

FIRE, EXPLOSION, AND CARBON MONOXIDE POISONING HAZARD

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

Suspended Furnace Support

The furnace may be supported under the entire length of the furnace with threaded rod and angle iron. (See Figure 25) Secure angle iron to bottom of furnace as shown.

Platform Furnace Support

Construct working platform at location where all required furnace clearances are met. (See Table 1 and Figure 26) For furnaces with 1−in. (25 mm) clearance requirement on side, set furnace on non−combustible blocks, bricks or angle iron. For crawlspace 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.

The furnace can be installed horizontally in an attic or crawlspace 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.

440 01 4300 00 21

Specifications subject to change without notice.

Page 22

Figure 25 Suspended Furnace Installation

2−in. (51 mm)

COMBUSTION − AIR PIPE (SEE VENTING SECTION)

A11155

NOTE: Local codes may require a drain pan and condensate trap when a condensing furnace is installed over a finished

ceiling

Figure 26 Working Platform for Attic Installation

COMBUSTION − AIR PIPE (SEE VENTING SECTION)

2−in. (51 mm)

NOTE: Local codes may require a drain pan and condensate trap when a condensing furnace is installed over a finished

ceiling

22 440 01 4300 00

Specifications subject to change without notice.

ROLLOUT PROTECTION REQUIRED Install 1.2” x 22” (305 x 559 mm) sheet metal in front of burner compartment area.

A11154

Page 23

Roll−Out Protection

Provide a minimum 12−in. x 22−in. (305 x 559 mm) piece of sheet metal for flame roll−out protection in front of burner area for furnaces closer than 12−in. (305 mm) above the combustible deck or suspended furnaces closer than 12−in. (305mm) to joists. The sheet metal MUST extend underneath the furnace casing by 1−in. (25mm) with the door removed. The bottom closure panel may be used for flame roll−out protection when bottom of furnace is used for return air connection. See Figure 26 for proper orientation of roll−out shield.

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. Connect supply−air duct to flanges on furnace supply−air outlet. Bend flange upward to 90 with wide duct pliers. (See Figure 22) The supply−air duct must be connected to ONLY the furnace supply−outlet−air duct flanges or air conditioning coil casing (when used). DO NOT cut main furnace casing side to attach supply air duct, humidifier, or other accessories. All supply−side accessories MUST be connected to duct external to furnace main casing.

Return Air Connections

The return−air duct may be connected to bottom of the furnace. The side of casing that faces downward may also be used for return air connection. A combination of the bottom and downward facing side may also be used. The upward facing side of the casing cannot be used as a return air connection. (See Figure 29)

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom return−air opening. Remove this panel when bottom return air is used. This panel may be used for rollout protection or discarded. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove four (4) screws holding bottom plate. (See Figure 19)

2. Remove bottom plate.

3. Remove bottom closure panel.

4. Reinstall bottom plate 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) are used without a bottom return air inlet. Not all horizontal furnaces are approved for side return air connections (See Figure 29)

Filter Arrangement

! WARNING

FIRE, CARBON MONOXIDE AND POISONING HAZARD

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

Never operate a furnace without a filter or filtration device installed. Never operate a furnace with filter or filtration device access doors removed.

Furnaces shipped without a filter rack:

There are no provisions for an internal filter in these furnaces. An external filter rack is required and is purchased separately. A field supplied accessory air cleaner may also be used in place of the filter rack.

For upflow applications, the filter can be installed on either side of the furnace, the bottom of the furnace or any combination of side and bottom of the furnace. (See Figure 28, Figure 30, and Figure 31) For downflow applications, the filter rack (or field supplied accessory air cleaner) must only be connected to the bottom opening on the furnace (See Figure 27 and Figure 31 and Table 9). For horizontal applications, the filter rack (or field supplied accessory air cleaner) can be connected to the bottom opening on the furnace. For side return use in the horizontal position, refer to Figure 29. If both side and bottom openings are used in Figure 29, each opening used will require a filter. A filter rack or any field supplied accessory air cleaner can also be installed in the common return duct prior to entering the return air opening in any orientation. See Table 6 for recommended filter size details.

Table 6 Filter Size Information − inch (mm)

FURNACE

CASING

WIDTH

17-1/2

(445)

21 (533)

24-1/2

(622)

* Recommended to maintain air filter face velocity. See Product Data for part number.

Refer to the instructions supplied with the Filter Rack or accessory air filter for additional assembly and installation options.

SIDE RETURN

16 x 25 x 3/4

(406 x 635 x 19)

16 x 25 x 3/4

(406 x 635 x 19)

16 x 25 x 3/4

(406 x 635 x 19)

FILTER SIZE

16 x 25 x 3/4

(406 x 635 x 19)

20 x 25 x 3/4

(508 x 635 x 19)

24 x 25 x 3/4

(610 x 635 x 19)

BOTTOM

RETURN

FILTER

TYPE

Washable*

Filter and Return Duct Sizing

Pressure drop must be taken into account when sizing filters, filter racks, IAQ devices, and associated system ductwork. See Table 7 for a comparison of Pressure Drop (initial/clean resistance to airflow) versus Airflow for a variety of filter media types and sizes. These are representative numbers. Consult the filter or IAQ device manufacturers’ specification sheet for performance data for a particular filter media or IAQ device. Design the filter and associated ductwork for the best match of pressure drop versus filter size. Best practice usually chooses filter systems with pressure drops under 0.2 in. w.c. (50 Pa), with the best blower electrical efficiency and system airflow performance occurring with filter pressure drops under 0.1 in. w.c. (25 Pa). Due to the relatively high pressure drops of 1-in (25 mm) thick after-market filter media, it is recommended that the filtration system be designed for at least 2-in (51 mm) thick media.

TIPS FROM CONTRACTORS: Install a media cabinet capable

of incorporating a 4-in (102 mm) thick media filter. This allows room for future upgrades to other IAQ devices.

NOTICE

Design the duct system FIRST to determine how much pressure drop may be allowed in the filter system. See the AIR DUCTS section. Excessive filter pressure drop often compromises system airflow and duct performance, causes inadequate airflow to the furthest ends of the duct system, as well as causes excess noise and higher than anticipated electrical consumption.

Provide duct transitions, as required, to smoothly transition airflow from the return duct system to the filter (or IAQ device) to the furnace when the dimensions of the ductwork or furnace return air opening do not match the required filter or IAQ device dimensions. See the instructions supplied with factory-accessory duct adapters.

440 01 4300 00 23

Specifications subject to change without notice.

Page 24

Table 7 Filter Media Pressure Drop (Clean) Versus Airflow - in. w.c. (Pa)

Factory-Accy

14 x 25 Filter

Washable

CFM L/s (1-in. / 2.5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm)

600 (283) 0.04 (12) 0.07 (17) 0.10 (26) 0.24 (60) 0.16 (40)

800 (378) 0.06 (15) 0.10 (25) 0.15 (39) 0.34 (85) 0.23 (59) 1000 (472) 0.07 (18) 0.13 (34) 0.21 (52) - - 0.32 (81) 1200 (566) 0.08 (20) 0.17 (43) 0.27 (68) - - - -

Representative After-Market Filter Media*

Fiberglass* Pleated*

Factory-Accy

16x 25 Filter

Washable

CFM L/s (1-in. / 2.5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm)

600 (283) 0.04 (10) 0.06 (15) 0.09 (22) 0.20 (51) 0.13 (34)

800 (378) 0.05 (13) 0.08 (21) 0.13 (32) 0.29 (72) 0.20 (49) 1000 (472) 0.06 (16) 0.11 (28) 0.17 (43) - - 0.27 (67) 1200 (566) 0.07 (18) 0.14 (36) 0.22 (56) - - - 1400 (661) 0.08 (21) 0.18 (45) 0.28 (70) - - - 1600 (755) 0.09 (23) 0.21 (54) - - - - - 1800 (850) 0.10 (25) 0.26 (64) - - - - - -

Factory-Accy

20 x 25 Filter

Washable

CFM (L/s) (1-in. / 2.5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm)

800 (378) 0.04 (11) 0.06 (16) 0.09 (24) 0.22 (55) 0.15 (37) 1000 (472) 0.05 (13) 0.08 (21) 0.13 (32) 0.29 (72) 0.20 (49) 1200 (566) 0.06 (15) 0.11 (27) 0.16 (41) - - 0.25 (63) 1400 (661) 0.07 (17) 0.13 (33) 0.20 (51) - - 0.31 (79) 1600 (755) 0.08 (19) 0.16 (40) 0.24 (61) - - - 1800 (850) 0.08 (21) 0.18 (47) 0.29 (73) - - - 2000 (944) 0.09 (23) 0.21 (54) - - - - - 2200 (1038) 0.09 (24) 0.25 (62) - - - - - -

Factory-Accy

25 x 25 Filter

Washable

CFM L/s (1-in. / 2.5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm)

800 (378) 0.03 (9) 0.05 (12) 0.07 (18) 0.17 (43) 0.11 (28) 1000 (472) 0.04 (11) 0.06 (16) 0.09 (24) 0.22 (55) 0.15 (37) 1200 (566) 0.05 (13) 0.08 (20) 0.12 (31) 0.27 (68) 0.18 (47) 1400 (661) 0.06 (15) 0.10 (24) 0.15 (38) - - 0.23 (58) 1600 (755) 0.06 (16) 0.11 (29) 0.18 (45) - - 0.28 (69) 1800 (850) 0.07 (18) 0.13 (34) 0.21 (53) - - - 2000 (944) 0.08 (19) 0.16 (39) 0.24 (61) - - - 2200 (1038) 0.08 (21) 0.18 (45) 0.28 (70) - - - -

* Representative estimates from filter manufacturer data sheets.

See manufacturers’ specifications for pressure drop versus airflow data for specific filter media.

If the filter size that you are looking for is not contained in Table 7, refer to Table 8 for a comparison of Pressure Drop (initial/clean resistance to airflow) versus Face Velocity for a variety of filter media types.

The following equations relate Face Velocity (FPM), Filter Area and Airflow (CFM):

Filter Face Velocity = Airflow / Filter Area Minimum Filter Area = Rated System Airflow / Maximum Filter Face Velocity

Table 8 Filter Media Pressure Drop (Clean) Versus Velocity - in. w.c. (Pa)

Face Velocity FactoryAccy

Washable

FPM (m/s) (1in. / 2.5 cm) (1in. / 2.5 cm) (2in. / 5 cm) (1in. / 2.5 cm) (2in. / 5 cm)

200 (1) 0.04 (10) 0.05 (13) 0.08 (20) 0.18 (47) 0.12 (31)

300 (1.5) 0.05 (14) 0.09 (22) 0.13 (34) 0.30 (75) 0.21 (52)

400 (2) 0.07 (17) 0.13 (32) 0.20 (50)   0.31 (78)

500 (2.5) 0.08 (21) 0.18 (44) 0.27 (69)    

600 (3) 0.09 (23) 0.23       

700 (3.6) 0.10 (26) 0.29       

* Representative estimates from filter manufacturer data sheets.

See manufacturers’ specifications for pressure drop versus airflow data for specific filter media.

24 440 01 4300 00

Representative After-Market Filter Media*

Fiberglass* Pleated*

Representative After-Market Filter Media*

Fiberglass* Pleated*

Representative After-Market Filter Media*

Fiberglass* Pleated*

Representative AfterMarket Filter Media*

Fiberglass* Pleated*

Specifications subject to change without notice.

Page 25

Figure 27

)

Downflow Return Air Configurations and Restrictions

L10F033

External Filter Cabinet Configurations

Figure 30 Accessory Side Filter Rack

FURNACE

FILTER FRAME

Figure 28

Figure 29

HORIZONTAL TOP RETURN NOT PERMITTED FOR ANY MODEL

Upflow Return Air Configurations and Restrictions

L10F032

Horizontal Return Air Configurations and Restrictions

17 ⅛” (43.5 cm)

1 ¼” (3 cm)

(TYP.)

4”

(3 cm)

DOOR

FILTER

25 ⅛” (64 cm)

23 ⅛” (59 cm)

OPENING

⅜” (1 cm)

TABS

½” (1.3 cm)

OPENING

L10F027

2 ⅜” (6 cm

¾”

(2 cm)

16 ⅛” (41 cm

14 ½” (37 cm)

L12F023

SIDE RETURN AIR NOT PERMITTED FOR 2000 CFM AND ABOVE OF AIR FLOW

440 01 4300 00 25

L10F034

Specifications subject to change without notice.

Page 26

Figure 31 Accessory Bottom Filter Rack

L10F031

22−5/16

(566.4)

28−7/16

(722.2)

2−3/16

(55.5)

Table 9 Dimensional Drawing − inch (mm)

KIT NO.

NAHB00601FF

NAHB00701FF

NAHB00801FF

FURNACE

WIDTH

17−1/2 (444.5)

(533.4) 24−1/2

(622.3)

A B

14−5/8 (371.5)

18−1/8 (460.4)

21−5/8 (549.3)

17−5/8 (447.7)

21−1/8 (536.6)

24−5/8 (625.5)

Air Ducts

NOTICE

Many states, provinces and localities are considering or have implemented standards and/or restrictions on duct sizing practices, ductwork leakage, and/or ductwork thermal, airflow and electrical efficiencies. CONSULT LOCAL CODE OFFICIALS for ductwork design and performance requirements in your area.

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 Manual D), 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 the Service and Technical Manual, 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 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.

Return Duct Sizing

Refer to the Filter Selection and Duct Sizing section for information on the proper selection of filter sizes and the associated ductwork and duct transitions. Improperly designed filtering systems and return ductwork are the most common causes of airflow and/or noise complaints in HVAC systems.

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.

NOTE: For horizontal applications, the top most flange may be bent past 90 to allow the evaporator coil to hang on the flange temporarily while the remaining attachment and sealing of the coil are performed.

26 440 01 4300 00

Specifications subject to change without notice.

Page 27

GAS PIPING

! WARNING

FIRE OR EXPLOSION HAZARD

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

Never purge a gas line into a combustion chamber. 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. A fire or explosion may result causing property damage, personal injury or loss of life.

! WARNING

FIRE OR EXPLOSION HAZARD

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

Use proper length of pipe to avoid stress on gas control manifold and a gas leak.

! WARNING

FIRE OR EXPLOSION HAZARD

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

Gas valve inlet and/or inlet pipe must remain capped until gas supply line is permanently installed to protect the valve from moisture and debris. Also, install a sediment trap in the gas supply piping at the inlet to the gas valve.

Gas piping must be installed in accordance with national and local codes. Refer to current edition of NFGC in the U.S.A. Refer to current edition of CAN/CSA B149.1 in Canada.

Installations must be made in accordance with all authorities having jurisdiction. If possible, the gas supply line should be a separate line running directly from meter to furnace.

NOTE: Use a back−up wrench on the inlet of the gas valve when connecting the gas line to the gas valve.

NOTICE

FIRE OR EXPLOSION HAZARD

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

If local codes allow the use of a flexible gas appliance connector, always use a new listed connector. Do not use a connector which has previously served another gas appliance. Black iron pipe shall be installed at the furnace gas control valve and extend a minimum of 2−in. (51 mm) outside the furnace.

! CAUTION

FURNACE DAMAGE HAZARD

Failure to follow this caution may result in furnace damage.

Connect gas pipe to furnace using a backup wrench to avoid damaging gas controls and burner misalignment.

Table 10 Maximum Capacity of Pipe

NOMINAL

IRON PIPE

SIZE

IN. (MM)

1/2 (13)

3/4 (19)

1 ( 25)

1‐1/4 (32)

1‐1/2 (39)

* Cubic ft of gas per hr for gas pressures of 0.5 psig (14-In. W.C.) or less and a pressure drop of 0.5-In. W.C. (based on a 0.60 specific gravity gas). Ref: Table 10 above, and 6.2 of NFPA54/ANSI Z223.1-2009.

An accessible manual equipment shutoff valve MUST be installed external to furnace casing and within 6 ft. (1.8 M) of furnace.

Install a sediment trap in riser leading to furnace as shown in Figure 32. Connect a capped nipple into lower end of tee. Capped nipple should extend below level of furnace gas controls. Place a ground joint union between furnace gas control valve and exterior manual equipment gas shutoff valve.

INTERNAL

DIA.

IN. (MM)

0.622 (158)

0.824 (20.9) 360 250 200 170 151

1.049 (26.6) 680 465 375 320 285

1.380 (35.0) 1400 950 770 660 580

1.610 (40.9) 2100 1460 1180 990 900

Figure 32 Typical Gas Pipe Arrangement

LENGTH OF PIPE − FT (M)

(3.0)20(6.0)30(9.1)40(12.1)50(15.2)

175 120 97 82 73

IN THE STATE OF MASSACHUSETTS:

1. Gas supply connections MUST be performed by a licensed plumber or gas fitter.

2. When flexible connectors are used, the maximum length shall not exceed 36−in. (915 mm).

3. When lever handle type manual equipment shutoff valves are used, they shall be T−handle valves.

4. The use of copper tubing for gas piping is NOT approved by the state of Massachusetts.

Refer to Table 10 for recommended gas pipe sizing. Risers must be used to connect to furnace and to meter. Support all gas piping with appropriate straps, hangers, etc. Use a minimum of one hanger every 6 ft. (1.8 M). Joint compound (pipe dope) should be applied sparingly and only to male threads of joints. Pipe dope must be resistant to the action of propane gas.

440 01 4300 00 27

L10F030

A 1/8−in. (3 mm) NPT plugged tapping, accessible for test gauge connection, MUST be installed immediately upstream of gas supply connection to furnace and downstream of manual equipment shutoff valve.

Specifications subject to change without notice.

Page 28

Piping should be pressure and leak tested in accordance with the current addition of the NFGC in the United States, local, and national plumbing and gas codes before the furnace has been connected. Refer to current edition of NSCNGPIC in Canada. After all connections have been made, purge lines and check for leakage at furnace prior to operating furnace.

NOTE: The furnace gas control valve inlet pressure tap connection is suitable to use as test gauge connection providing test pressure DOES NOT exceed maximum 0.5 psig (14−in. w.c.) stated on gas control valve. (See Figure 33)

Figure 33

ON/OFF Switch

Redundant Automatic Control Valve (Modulating)

MODULATING

Figure 34 Gas Entry

Left Side Gas Entry. Gas Pipe Grommet Required For Direct Vent Applications.

Gas Pipe Grommet Required For Direct Vent Applications

Min/Max Heat Adust (Under Cap)

Turn screw 1 click per second to adjust rate. Clockwise to increase rate, counter clockwise to decrease rate.

Inlet Pressure Tap

GAS FLOW

Manifold Pressure Tap

1/2” NPT Outlet

A10496

If pressure exceeds 0.5 psig (14−in. w.c.), gas supply pipe must be disconnected from furnace and capped before and during supply pipe pressure test. If test pressure is equal to or less than 0.5 psig (14−in. w.c.), turn off electric shutoff switch located on furnace gas control valve and accessible manual equipment shutoff valve before and during supply pipe pressure test. After all connections have been made, purge lines and check for leakage at furnace prior to operating furnace.

The gas supply pressure shall be within the maximum and minimum inlet supply pressures marked on the rating plate with the furnace burners ON and OFF.

Some installations require gas entry on right side of furnace (as viewed in upflow). (See Figure 34)

Gas Pipe Grommet

For direct vent (2-pipe) applications, the knockout for the gas pipe must be sealed to prevent air leakage. Remove the knockout, install the grommet in the knockout, then insert the gas pipe. The grommet is included in the loose parts bag. (See Figure 34)

A11338

ELECTRICAL CONNECTIONS

! WARNING

ELECTRICAL SHOCK HAZARD

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

Blower door switch opens 115−v power to control. No component operation can occur. Do not bypass or close switch with blower door removed.

See Figure 35 for field wiring diagram showing typical field 115−v wiring. Check all factory and field electrical connections for tightness.

Field−supplied wiring shall conform with the limitations of 63°F (33°C) rise.

! WARNING

ELECTRICAL SHOCK AND FIRE HAZARD

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

The cabinet MUST have an uninterrupted or unbroken ground according to NEC ANSI/NFPA 70−2011 or local codes to minimize personal injury if an electrical fault should occur. In Canada, refer to Canadian Electrical Code CSA C22.1. This may consist of electrical wire, conduit approved for electrical ground or a listed, grounded power cord (where permitted by local code) when installed in accordance with existing electrical codes. Refer to the power cord manufacturer’s ratings for proper wire gauge.

Do not use gas piping as an electrical ground.

! CAUTION

FURNACE MAY NOT OPERATE HAZARD

Failure to follow this caution may result in intermittent furnace operation.

Furnace control must be grounded for proper operation or else control will lock out. Control must remain grounded through green/yellow wire routed to gas valve and manifold bracket screw.

115−V Wiring

Furnace must have a 115-v power supply properly connected and grounded.

NOTE: Proper polarity must be maintained for 115-v wiring. Control status indicator light flashes code 10 and furnace does

28 440 01 4300 00

Specifications subject to change without notice.

Page 29

not operate if polarity is incorrect or if the furnace is not grounded.

Verify that the voltage, frequency, and phase correspond to that specified on unit rating plate. Also, check to be sure that service provided by utility is sufficient to handle load imposed by this equipment. Refer to rating plate or Table 11 for equipment electrical specifications.

U.S.A. Installations: Make all electrical connections in accordance with National Electrical Code (NEC) ANSI/NFPA 70 and any local codes or ordinances that might apply.

Canadian Installations: Make all electrical connections in accordance with the current edition of the Canadian Electrical Code CSA C22.1 and any local codes or ordinances that might apply.

! WARNING

FIRE HAZARD

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

Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire.

Use a separate, fused branch electrical circuit with a properly sized fuse or circuit breaker for this furnace. See Table 11 for wire size and fuse specifications. A readily accessible means of electrical disconnect must be located within sight of the furnace.

J−Box Installation

! WARNING

FIRE OR ELECTRICAL SHOCK HAZARD

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

If field−supplied manual disconnect switch is to be mounted on furnace casing side, select a location where a drill or fastener cannot damage electrical or gas components.

The J-Box is used when field line voltage electrical connections are made to the furnace wiring harness inside the furnace casing. The J-Box is not required if a field-supplied electrical box is attached to the outside of the furnace casing and the box is grounded to the green ground wire of the main wiring harness and the earth ground of the field electrical supply.

The J−Box cover, mounting bracket and screws are shipped in the loose parts bag included with the furnace. The J−Box can be mounted on the left or right side of the casing, as viewed from the upflow position. (See Figure 36)

SWITCH

COPPER

WIRE ONLY

ALUMINUM

WIRE

A11146

Figure 35 Heating and Cooling Application Wiring Diagram with Single−Stage Thermostat

FIELD 24-VOLT WIRING FIELD 115-, 208/230-, 460-VOLT WIRING FACTORY 24-VOLT WIRING FACTORY 115-VOLT WIRING

BLOWER

DOOR

SWITCH

BLK

WHT

GND

115-VOLT FIELD-

SUPPLIED

FUSED

DISCONNECT

BLK

WHT

JUNCTION BOX

FIVE

WIRE

THREE-WIRE

HEATING-

ONLY

FURNACE

COM

O N

W/W1

Y/Y2

R O

24-VOLT

TERMINAL

BLOCK

NOTE 2

WC Y RG

NOTE 1

NOTES: 1.

Connect Y/Y2-terminal as shown for proper operation. Some thermostats require a "C" terminal connection as shown.

2. If any of the original wire, as supplied, must be replaced, use

3. same type or equivalent wire.

1-STAGE THERMOSTAT TERMINALS

CONDENSING

UNIT

FIELD-SUPPLIED

FUSED DISCONNECT

GND

208/230- OR 460-VOLT THREE PHASE

208/230VOLT SINGLE PHASE

440 01 4300 00 29

A11401

Specifications subject to change without notice.

Page 30

Figure 36 Optional J−Box Locations

OPTIONAL J−BOX LOCATIONS

Representative drawing only, some models may vary in appearance.

L12F024

Remove the J−Box cover and mounting bracket from the loose parts bag. Select a 7/8−in. (22 mm) knock-out on the desired side of the casing. Remove the knock-out from the casing. Drill two 1/8−in. (3 mm) pilot holes in the casing dimples by the desired 7/8−in. (22 mm) knock-out. Align the J−Box mounting bracket against the inside of the casing and secure the mounting bracket with the screws. (See

Figure 37)

Electrical Box on Furnace Casing Side

NOTE: Check that duct on side of furnace will not interfere with

installed electrical box.

1. Fasten a field-supplied external electrical box to the outside of the casing by driving two field-supplied screws from inside electrical box into casing. (See Figure 38)

2. Route field power wiring into external electrical box.

3. Pull furnace power wires through 1/2-in. (12 mm) diameter hole in J−Box. If necessary, loosen power wires from strain−relief wire-tie on furnace wiring harness.

4. Connect any code required external disconnect(s) to field power wiring.

Figure 37 J−Box Bracket Installation

J−BOX MOUNTING SCREWS

J−BOX MOUNTING BRACKET

GROUND SCREW

J−BOX COVER

L12F025

5. Route external field power wires through holes in electrical box and casing.

6. Connect field ground wire and factory ground wire to green ground screw on J−Box mounting bracket as shown in Figure 37.

7. Connect field power and neutral leads to furnace power leads. as shown in Figure 35.

8. Attach furnace J−Box cover to mounting bracket with screws supplied in loose parts bag. Do not pinch wires between cover and bracket.

9. Complete external disconnect wiring and installation. Connect line voltage leads as shown in Figure 38. Use best practices (NEC) ANSI/NFPA 70 in U.S. for wire bushings, strain relief, etc., and Canadian Electrical Code CSA C22.1.

Figure 38

Field−Supplied Electrical Box on Furnace Casing

GROUND

NEUTRAL

LINE VOLTAGE

A10141

Power Cord Installation in Furnace J−Box

NOTE: Power cords must be able to handle the electrical

requirements listed in Table 11. Refer to power cord manufacturer’s listings.

1. Install J−Box mounting bracket to inside of furnace

casing. (See Figure 37)

2. Route listed power cord through 7/8−in. (22 mm) diameter hole in casing and J−Box bracket.

3. Secure power cord to J−Box bracket with a strain relief bushing or a connector approved for the type of cord used.

4. Pull furnace power wires through 1/2−in. (12 mm) diameter hole in J−Box. If necessary, loosen power wires from strain—relief wire−tie on furnace wiring harness.

5. Connect field ground wire and factory ground wire to green ground screw on J−Box mounting bracket as shown in Figure 37.

6. Connect power cord power and neutral leads to furnace power leads as shown in Figure 35.

7. Attach furnace J−Box cover to mounting bracket with screws supplied in loose parts bag. Do not pinch wires between cover and bracket.

BX Cable Installation in Furnace J−Box

1. Install J−Box mounting bracket to inside of furnace casing.

30 440 01 4300 00

Specifications subject to change without notice.

Page 31

2. Route BX connector through 7/8−in. (22 mm) diameter hole in casing and J−Box bracket.

3. Secure BX cable to J−Box bracket with connectors approved for the type of cable used.

4. Connect field ground wire and factory ground wire to green ground screw on J−Box mounting bracket as shown in Figure 37.

5. Connect field power and neutral leads to furnace power leads. as shown in Figure 35.

6. Attach furnace J−Box cover to mounting bracket with screws supplied in loose parts bag. Do not pinch wires between cover and bracket.

24−V Wiring

Make field 24−v connections at the 24−v terminal strip. (See Figure 40) Connect terminal Y/Y2 as shown in Figure 35 for proper cooling operation. Use only AWG No. 18, color−coded, copper thermostat wire.

NOTE: Use AWG No. 18 color-coded copper thermostat wire for lengths up to 100 ft. (30.5 M). For wire lengths over 100 ft., use AWG No. 16 wire.

The 24−v circuit contains an automotive−type, 3−amp. fuse located on the control. Any direct shorts during installation, service, or maintenance could cause this fuse to blow. If fuse replacement is required, use ONLY a 3−amp. fuse of identical size. (See Figure 39 and Figure 40)

See the Service and Technical Support manual for detailed instructions on control wiring and setup.

Thermostats and Control Settings

For best results, use a communicating wall control to control this modulating furnace. A single stage or two−stage heating and cooling thermostat can be used with the furnace. The furnace control board CPU will control the furnace and outdoor unit staging. A two stage heating and cooling thermostat can also be used to control the staging. However, full modulating capability will not be available when the furnace staging is controlled by the thermostat. Furnace staging will be limited to Minimum and Maximum inputs or Intermediate and Maximum inputs depending on the configuration of set-up switches SW1-2 and SW4-2. Refer to typical thermostat wiring diagrams and the Sequence of Operation section for additional details. Consult the thermostat installation instructions for specific information about configuring the thermostat.

Accessories (See Figure 39 and Figure 40)

1. Electronic Air Cleaner (EAC) Connect an accessory Electronic Air Cleaner (if used)

using 1/4−in female quick connect terminals to the two

male 1/4−in quick−connect terminals on the control board marked EAC−1 and EAC−2. The terminals are rated for 115VAC, 1.0 amps maximum and are energized during blower motor operation.

2. Humidifier (HUM) The HUM terminal is a 24 VAC output, energized

when the blower is operating during a call for heat. Connect an accessory 24 VAC, 0.5 amp. Maximum (if

used) to the 1/4−in male quick−connect HUM terminal and COM−24V screw terminal on the control board thermostat strip.

NOTE: If the humidifier has its own 24 VAC power supply, an isolation relay may be required. Connect the 24 VAC coil of the isolation relay to the HUM and COM/24V screw terminal on the control board thermostat strip. (See Figure 40)

3. Communication Connector

This connection is used when the furnace is controlled by an optional communicating wall control instead of a standard thermostat. The communication plug is supplied with the communicating wall control. Refer to the instructions supplied with the communicating wall control for complete details.

4. Outside Air Thermistor (OAT) The OAT connection is used in conjunction with

communicating wall control. It is not required when the furnace is controlled by a standard type thermostat. Refer to the instructions supplied with the communicating wall control for complete details.

Alternate Power Supplies

This furnace is designed to operate on a utility generated power which has a smooth sinusoidal waveform. If the furnace is to be operated on a generator or other alternate power supply, the alternate power supply must produce a smooth sinusoidal waveform for compatibility with furnace electronics. The alternate power supply must generate the same voltage, phase, and frequency (Hz) as shown in Table 11 or on the furnace rating plate.

Power from an alternate power supply that non-sinusoidal may damage the furnace or cause erratic furnace operation.

Contact the alternate power supply manufacturer for specifications and details.

Table 11 Electrical Data − MODULATING (F/G)9MAE

VOLTS−

HERTZ−

UNIT SIZE

0601714 115-60-1 127 104 9.7 12.7 14 29 (8.8) 15 0602120 115-60-1 127 104 14.8 19.1 12 30 (9.1) 20 0801714 115-60-1 127 104 9.7 12.7 14 29 (8.8) 15 0802120 115-60-1 127 104 14.8 19.1 12 30 (9.1) 20 1002122 115-60-1 127 104 14.8 19.1 12 30 (9.1) 20 1202422 115-60-1 127 104 14.8 19.1 12 30 (9.1) 20

* Permissible limits of the voltage range at which the unit operates satisfactorily. # Unit ampacity = 125 percent of largest operating component’s full load amps plus 100 percent of all other potential operating components’ (EAC, humidifier, etc.) full load amps.

 Time−delay type is recommended.  Length shown is as measured one way along wire path between unit and service panel for maximum 2 percent voltage drop.

PHASE

OPERATING VOLTAGE

RANGE*

Maximum* Minimum*

440 01 4300 00 31

MAXIMUM

UNIT

AMPS

Specifications subject to change without notice.

UNIT

AMPACITY#

MINIMUM

WIRE

SIZE

AWG

MAXIMUM

WIRE

LENGTH

FT (M)}

MAXIMUM

FUSE OR CKT BKR

AMPS{

Page 32

Figure 39 Isolation Relay for Humidifiers with Internal Power Supply

To Humidifier Leads

24 V

Coil

To Humidifier Leads

Figure 40 Variable Speed Furnace Control − Switch Locations

PL9

SW4

3 2 1

PL4

SW*

OAT

To HUM Terminal On

Furnace Control Board

To Com/24V Screw Terminal

on Thermostat Strip

A11157

O N

8 7 6 5 4 3 2 1

SW2 SW3

3 2 1

DHUM

O N

PL7

3 2 1

O N

L11F080

32 440 01 4300 00

Specifications subject to change without notice.

Page 33

Figure 40 − continued Example of Variable Speed Furnace Control for ECM Blower Motor (Modulating)

MODEL PLUG CONNECTOR

SW1 SETUP

SWITCHES AND

BLOWER OFFï

DELAY

AIR CONDITIONING

(A/C) AIRFLOW

SETUP SWITCHES

24ïV THERMOSTAT

TERMINALS

STATUS AND COMM

LED LIGHTS

3ïAMP FUSE

TRANSFORMER 24ïVAC

CONNECTIONS

115ïVAC (L2) NEUTRAL

CONNECTIONS

PL1 ć LOW VOLTAGE MAIN

HARNESS CONNECTOR

COMMUNICATION

CONNECTOR

SOFTWARE

VERSION

CONTINUOUS FAN

(CF) AIRFLOW

SETUP SWITCHES

PART NUMBER AND

DATE CODE WWYY

EACï1 TERMINAL

(115ïVAC 1.0 AMP MAX.)

OUTDOOR

IR TEMP

CONNECTOR

VOLTAGE CONNECTIONS

SW4 SETUP

SWITCHES

115ïVAC (L1) LINE

PL8 ï MODULATING

GAS VALVE

CONNECTOR

HUMIDIFIER

TERMINAL (24AVAC

0.5 AMP MAX.

UPGRADE

CONNECTOR

(FACTORY

PL3 ć ECM BLOWER

HARNESS

CONNECTOR

PL2 ć HOT SURFACE

IGNITER & INDUCER

MOTOR CONNECTOR

FLASH

ONLY)

L11F091

VENTING

NOTE: Planning for the venting system should be done in

conjunction with planning for the ductwork, drainage, and furnace accessories, such as air cleaners and humidifiers. Begin assembling the venting system AFTER the furnace is set in place in the required orientation. Venting for this furnace shall follow all Local codes for category

IV venting systems. This furnace is CSA approved for venting with PVC/ABS DWV venting systems. This furnace is also CSA approved for venting the M&G DuraVent PolyPro polyproplylene venting systems. NOTE: THESE INSTRUCTIONS DO NOT CONTAIN DETAILED INSTALLATION INSTRUCTIONS FOR POLYPROPYLENE VENTING SYSTEMS. Refer to the polyproplylene venting system manufacturer’s installation instructions for the polyproplylene venting system installation. NOTE: When using polypropylene venting systems, all venting materials used, including the vent terminations, must be from the same manufacturer.

Special Venting Requirements for Installations in Canada

Installation in Canada must conform to the requirements of CAN/CSA B149 code. Vent systems must be composed of pipe, fittings, cements, and primers listed to ULC S636. The special vent fittings, accessory concentric vent termination kits, and accessory external drain trap available from the furnace manufacturer have been certified to ULC S636 for use with those Royal Pipe and IPEX PVC vent components which have been certified to this standard. In Canada, the primer and cement must be of the same manufacturer as the vent system – GVS-65 Primer (Purple) for Royal Pipe or IPEX System 636, PVC/CPVC Primer, Purple Violet for Flue Gas Venting and

GVS-65 PVC Solvent Cement for Royal Pipe or IPEX System

t, PVC Cement for Flue Gas Venting, rated Class IIA, 65

636

(1)

deg C. must be used with this venting system - do not mix primers and cements from one manufacturer with a vent system from a different manufacturer. Follow the manufacturer’s instructions in the use of primer and cement and never use primer or cement beyond its expiration date. The safe operation, as defined by ULC S636, of the vent system is based on following these installation instructions, the vent system manufacturer’s installation instructions, and proper use of primer and cement. All fire stop and roof flashing used with this system must be UL listed material. Acceptability under Canadian standard CAN/CSA B149 is dependent upon full compliance with all installation instructions. Under this standard, it is recommended that the vent system be checked once a year by qualified service personnel. The authority having jurisdiction (gas inspection authority, municipal building department, fire department, etc) should be consulted before installation to determine the need to obtain a permit.

*IPEX System 636™ is a trademark of IPEX Inc.

Consignes spéciales pour l’installation de ventilation au Canada

L’installation faite au Canada doit se conformer aux exigences du code CAN/CSA B149−2010. Ce systême de ventillation doit se composer de tuyaux, raccords, ciments et apprêts conformes au ULC S636. La tuyauterie de ventilation des gaz, ses accessoires, le terminal concentrique mural ainsi que l’ensemble du drain de condensation extérieur fourni par le fabricant de cette fournaise ont été certifiés ULC S636 pour l’application des composantes Royal Pipe, IPEX PVC qui sont certifiées à ce standard. Au Canada, l’apprêt et le ciment doivent être du même fabricant que le système d’évacuation.

440 01 4300 00 33

Specifications subject to change without notice.

Page 34

L’apprêt GVS-65 (Purple) et le ciment-solvant GVS-65 doivent être utilisé avec les Royal Pipe. Système IPEX 636, apprêt PVC/CPVC, Purple pour évacuation des gaz de combustion et système IPEX 636(1)t, ciment PVC pour évacuation des gaz de combustion, coté classe IIA, 65 deg C. doivent être utilisés avec le système d’évacuation IPEX 636 – Ne pas combiner l ’apprêt et le ciment d’un manufacturier avec un système d’évacuation d’un manufacturier différent. Bien suivre les indications du manufacturier lors de l’utilisation de l’apprêt et du ciment et ne pas utiliser ceux-ci si la date d’expiration est atteinte.

L’opération sécuritaire, tel que définit par ULC S636, du système de ventilation est basé sur les instructions d’installation suivantes, ainsi que l’usage approprié de l’apprêt et ciment. Tout arrët feu et solin de toit utilisés avec ce système doivent être des matériaux listés UL. L’acceptation du standard Canadien CAN/CSA B149 est directement relié à l’installation conforme aux instructions cihaut mentionnées. Le standard Canadien recommande l’ inspection par un personel qualifié et ce, une fois par année.

Les autoritées ayant juridiction (inspecteurs de gas, inspecteurs en bâtiments, département des incendies, etc) devraient être consultées avant l’installation afin de déterminer si un permis est requis.

! WARNING

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death. Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death.

1. Seal any unused openings in venting system.

2. Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the CSA B149.1 Natural Gas and Propane Installation Code 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 windows and all doors between the space in which the appliance(s) connected to the venting system 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 exhaust fans, such as range hoods and bathroom 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 appliances at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle.

8. If improper venting is observed during any of the above tests, the venting system must be corrected in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1 Natural Gas and Propane Installation Code.

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.

General

If this furnace replaces a furnace that was connected to a vent system or chimney, the vent or vent connectors of other remaining appliances may need to be re−sized. Vent systems or vent connectors of other appliances must be sized to the minimum size as determined using appropriate table found in the current edition of National Fuel Gas Code NFPA 54/ANSI Z−223.1. In Canada, refer to CAN/CSA−B149.1

An abandoned masonry chimney may be used as a raceway for properly insulated and supported combustion−air (when applicable) and vent pipes. Each furnace must have its own set of combustion−air and vent pipes and be terminated individually, as shown in Figure 47 for Direct Vent (2−pipe) system or Figure 48 for ventilated combustion air option.

A furnace shall not be connected to a chimney flue serving a separate appliance designed to burn solid fuel.

Other gas appliances with their own venting system may also use the abandoned chimney as a raceway providing it is permitted by local code, the current edition of the National Fuel Gas Code and the vent or liner manufacturer’s installation instructions. Care must be taken to prevent the exhaust gases from one appliance from contaminating the combustion air of other gas appliances.

Do not take combustion air from inside the chimney when using ventilated combustion air or single pipe vent option.

These furnaces can be vented either as direct vent furnace, or as ventilated combustion air system. Each type of venting system is described below. Common venting between furnaces or other appliances prohibited.

Materials

U.S.A.

Combustion air and vent pipe, fittings, primers, and solvents must conform to American National Standards Institute (ANSI) standards and American Society for Testing and Materials (ASTM) standards. See Table 13 for approved materials for use in the U.S.A. This furnace is also CSA approved for venting with M&G DuraVent® PolyPro® polyproplylene venting systems.

Canada

Special Venting Requirements for Installations in Canada Installation in Canada must conform to the requirements of CAN/CSA B149 code. Vent systems must be composed of pipe, fittings, cements, and primers listed to ULC S636. M&G DuraVent PolyPro polyproplylene venting systems are ULC S636 listed.

NOTE: When using polypropylene venting systems, all venting materials used, including the vent terminations, must be from the same manufacturer.

34 440 01 4300 00

Specifications subject to change without notice.

Page 35

Venting Systems

NOTICE

CARBON MONOXIDE POISONING HAZARD Failure to follow the instructions outlined in Locating the Vent Termination for each appliance being placed into operation could result in carbon monoxide poisoning or death. For all venting configurations for this appliance and other gas appliances placed into operation for the structure, provisions for adequate combustion, ventilation, and dilution air must be provided in accordance with: U.S.A. Installations: Section 9.3 NFPA 54/ANSI Z223.1 1−2009, Air for Combustion and Ventilation and applicable provisions of the local building codes. Canadian Installations: Part 8 of CAN/CSA−B149.1−10. Venting Systems and Air Supply for Appliances and all authorities having jurisdiction.

WARNING

NOTICE

RECOMMENDED SUPPORT FOR VENT TERMINATIONS

It is recommended that sidewall vent terminations of over 24 inches (0.6 M) in length or rooftop vent terminations of over 36 inches (1 M) in length be supported by EITHER the factory accessory vent termination kit or field-supplied brackets or supports attached to the structure. A factory accessory vent termination kit may be used for direct vent terminations. Termination kits are available for 2-in. or 3-in. pipe. See Table 12 for available options.

A factory accessory concentric vent termination kit is available for direct vent terminations. Concentric vent termination kits are available for 2−in. and 3−in. pipe. See Table 12 for available options.

Table 12

Direct Vent (2−pipe)

Termination Kit

2−in (51 mm) Concentric

Vent Kit

3−in (76 mm) Concentric

Vent Kit

2−in (51 mm) Termination

Bracket Kit

3−in (76 mm) Termination

Bracket

Direct Vent / 2−Pipe System

In a direct vent (2−pipe) system, all air for combustion is taken directly from outdoor atmosphere, and all flue products are discharged to outdoor atmosphere. Combustion-air and vent pipes must terminate together in the same atmospheric pressure zone, either through the roof (preferred) or a sidewall. See Figure 57 for references to clearances required by National code authorities.

Vent Termination Kit for Direct Vent (2−pipe) Systems

Termination

System

Single Penetration

of Wall or Roof

Single Penetration

of Wall or Roof

2−Pipe

Termination

System

2−Pipe

Termination

System

Diam. Of

Combustion Air

and Vent Pipes

in.(mm)

1, 1−1/2, 2, or 2−1/2

(25, 38, 51, 64 mm)

2−1/2, 3 or 4

(64, 76, 102 mm)

1, 1−1/2, 2, or 2−1/2

(25, 38, 51, 64 mm)

2−1/2, 3 or 4

(64, 76, 102 mm)

OPTIONAL CONFIGURATION FOR COMBUSTION AIR INLET PIPE

When sizing venting systems, the equivalent length of the optional inlet pipe moisture trap must be taken into account.

Ventilated Combustion Air Systems

In a ventilated combustion air option, the vent terminates and discharges the flue products directly to the outdoors similar to a direct vent system. See Figure 58 for references to clearances required by National code authorities.

All air for combustion is piped directly to the furnace from a space that is well ventilated with outdoor air (such as an attic or crawl space) and the space is well isolated from the living space or garage. Combustion air requirements for this option are the same as the requirements for providing outside air for combustion for a single pipe vent system. Refer to the “Air For Combustion and Ventilation Section.”

NOTICE

OPTIONAL VENTING BELOW THE FURNACE

The venting system may be positioned below the furnace ONLY IF the factory accessory External Vent Trap Kit is used. The External Vent Trap Kit is only approved for PVC/ABS DWV venting systems.

CAREFULLY FOLLOW THE INSTRUCTIONS PROVIDED WITH THE EXTERNAL VENT TRAP KIT FOR LAYING OUT THE VENTING SYSTEM AND THE DRAIN SYSTEM. The

instructions included with this furnace DO NOT APPLY to vent systems that are located below the furnace

CARBON MONOXIDE POISONING HAZARD

Failure to follow the instructions outlined in Locating the Vent Termination for each appliance being placed into operation could result in carbon monoxide poisoning or death.

The instructions included with this furnace DO NOT APPLY to vent systems that are located below the furnace. CARE-

FULLY FOLLOW THE INSTRUCTIONS PROVIDED WITH THE EXTERNAL VENT TRAP KIT FOR LAYING OUT THE VENTING SYSTEM AND THE DRAIN SYSTEM when all or part of the venting system is placed below the furnace.

Proper configuration of the venting and drain system is critical when placing all or part of the venting system below the level of the furnace. VENT GASSES COULD BE RELEASED FROM THE DRAINAGE SYSTEM, if the instructions provided with the External Vent Trap Kit are not followed.

WARNING

440 01 4300 00 35

Specifications subject to change without notice.

Page 36

Table 13 Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials (U.S.A. Installation)

ASTM

SPECIFICATION

(MARKED ON

MATERIAL)

D1527 D1785 D2235 D2241 D2466 D2468 D2564 D2661 D2665

F438 F441 F442 F493

F628

F656 F891

MATERIAL PIPE FITTINGS

ABS Pipe − − Schedule−40 PVC Pipe − − Schedule−40

For ABS − − Solvent Cement For ABS

PVC Pipe − − SDR−21 & SDR−26 PVC − Fittings − Schedule−40 ABS − Fittings − Schedule−40

For PVC − − Solvent Cement For PVC

ABS Pipe Fittings − DWV at Schedule−40 IPS sizes

PVC Pipe Fittings − DWV CPVC − Fittings − Schedule−40 CPVC Pipe − − Schedule−40 CPVC Pipe − − SDR

For CPVC − − Solvent Cement For CPVC

ABS Pipe − −

For PVC − − Primer For PVC

PVC Pipe − − Cellular Core Schedule−40 & DWV

SOLVENT CEMENT AND

PRIMERS

DESCRIPTION

Cellular Core DWV at Schedule−40 IPS

sizes

Figure 41

Vent Coupling and Adapter with Gaskets

Vent Coupling and Adapter

Figure 42 Vent Pipe Flush with Adaptor

VENT PIPE ADAPTER WITH GASKET INSTALLED ON FURNACE VENT PIPE IS CUT FLUSH WITH TOP OF ADAPTER.

A11339A

Figure 43 Vent Pipe Flush Showing Coupling

ALIGN NOTCHES IN VENT PIPE COUPLING OVER STAND−OFF ON ADAPTER. TORQUE LOWER CL AMP 15 LB−IN. WHEN REMAINING VENT PIPE IS INSTALLED, TORQUE UPPER CL AMP TO 15 LB−IN.

Attach gaskets to vent pipe and combustion air adapters.

36 440 01 4300 00

A11314

A11339B

Specifications subject to change without notice.

Page 37

Locating the Vent Termination

General

NOTE: Termination Requirements for the Provinces of Alberta and Saskatchewan are located at the end of this section.

Combustion−air inlet pipe (Direct Bent/2−Pipe system only) and vent pipe must terminate outside structure, either through sidewall or roof.

For vent termination clearance, references to National codes are shown in Figure 57 for Direct Vent/2−Pipe system and Figure 58 for Ventilated Combustion Air system. For exterior termination arrangements, refer to Figure 57 for Direct Vent/2−Pipe system and Figure 58 for Ventilated Combustion Air system. Contact Local code authorities for other requirements to and/or exemptions from the National codes shown in the figures.

Roof termination is often preferred since it is less susceptible to damage or contamination, is usually located away from adjacent structures, is less prone to icing conditions, and often has less visible vent vapors. Sidewall terminations may require sealing or shielding of building surfaces with a corrosive resistance material due to the corrosive properties of combustion products from vent system as well as protection of adjacent structures.

NOTICE

RECOMMENDED SUPPORT FOR VENT TERMINATIONS

It is recommended that side-wall vent terminations in excess of 24 inches (0.6 M) or rooftop terminations in excess of 36 inches (1.0 M) in vertical length be supported by EITHER the Direct Vent Termination Kit shown in Table 12 or by field-supplied brackets or supports fastened to the structure.

When determining appropriate location for termination, consider the following guidelines:

1. Comply with all clearance requirements stated in

Figure 57 or Figure 58 per application.

2. Termination or termination kit should be positioned where vent vapors will not damage plants/shrubs or air conditioning equipment.

3. Termination or termination kit should be positioned so that it will not be affected by wind eddy, such as inside building corners, nor by recirculation of flue gases, airborne leaves, or light snow.

4. Termination or termination kit should be positioned where it will not be damaged by or subjected to foreign objects such as stones, balls, etc.

5. Termination or termination kit should be positioned where vent vapors are not objectionable.

Direct Vent / 2−Pipe System

Direct vent (2−pipe) vent and combustion air pipes must terminate outside the structure. See Figure 57 for references to vent clearances required by National code authorities. Allowable vent and combustion air terminations are shown in

Figure 47.

CARBON MONOXIDE POISONING HAZARD

Failure to follow the instructions outlined below for each appliance being placed into operation could result in carbon monoxide poisoning or death.

For all venting configurations for this appliance and other gas appliances placed into operation for the structure, provisions for adequate combustion, ventilation, and dilution air must be provided in accordance with:

U.S.A. Installations: Section 9.3 NFPA 54/ANSI Z223.1 1−2009, Air for Combustion and Ventilation and applicable provisions of the local building codes.

Canadian Installations: Part 8 of CAN/CSA−B149.1−10. Venting Systems and Air Supply for Appliances and all authorities having jurisdiction.

WARNING

Ventilated Combustion Air

The vent pipe for a Ventilated Combustion Air System must terminate outdoors. See Figure 57 for references to vent clearances required by National code authorities. Allowable vent terminations are shown in Figure 48. The combustion air pipe terminates in a well−ventilated attic or crawl space. Follow the clearances as shown in Figure 55 and Figure 56.

The combustion air pipe cannot terminate in attics or crawl spaces that use ventilation fans designed to operate in the heating season. If ventilation fans are present in these areas, the combustion air pipe must terminate outdoors as a Direct Vent System.

Termination Requirements for the Provinces of Alberta and Saskatchewan

The Provinces of Alberta and Saskatchewan require a minimum unobstructed distance of 4 ft. (1.2m) from the foundation to the property line of the adjacent lot for vent termination of any appliance with an input over 35,000 btuh. If there is less than 4 ft. (1.2m) of unobstructed distance to the property line of the adjacent lot, no type of vent termination is permitted for appliances with inputs greater than 35,000 btuh.

There are no additional restrictions on unobstructed distances greater than 8 ft. (2.4m). All single, 2-pipe and concentric vents may be used, providing all other Code and manufacturer’s requirements in these instructions are adhered to. Refer to the appropriate Vent Termination section above for locating the vent termination .

If the unobstructed distance from the foundation to the property line of the adjacent lot is no less than 4 ft. (1.2m) and no greater than 8 ft. (2.4m), it will be necessary to re-direct the flue gas plume. In this situation, a concentric vent kit cannot be used. A 2-pipe termination (or single pipe termination when permitted) that re-directs the flue gas away by use of an elbow

or tee, certified to ULC S636 must be used. (See Figure 44 and Figure 46)

The concentric vent kit currently cannot be modified to attach an elbow to the vent portion of the rain cap. A tee attached to the rain cap could potentially direct the flue gas plume toward the intake air stream and contaminate the incoming combustion air for the furnace.

Refer to Figure 44 and Figure 46 for terminations approved for use in Alberta and Saskatchewan.

from the adjacent property line

440 01 4300 00 37

Specifications subject to change without notice.

Page 38

Figure 44 Tee at Termination Outlet

OPTIONAL TERMINATION BRACKET FOR 2ïPIPE TERMINATIONS

L12F030

Figure 45

Sample Inlet Air Pipe Connection for Polypropylene Venting Systems

EXAMPLE FOR UPFLOW INSTALLATIONS. MAY BE APPLIED TO OTHER CONFIGURATIONS.

Figure 46 Vent Terminations

OVERHANG OR ROOF

VENT

Angle

22.5

off wall

OPTIONAL BRACKET COUPLING

COMBUSTIONïAIR

(ELBOW PARALLEL

TO WALL)

12 IN. SEPARATION

BETWEEN BOTTOM OF

COMBUSTION AIR AND

BOTTOM OF VENT

MAINTAIN 12 IN.

CLEARANCE

ABOVE HIGHEST

ANTICIPATED SNOW

LEVEL OR GRADE,

WHICHEVER IS

GREATER.

A12220

L12F031

38 440 01 4300 00

Specifications subject to change without notice.

Page 39

Figure 47 Combustion Air and Vent Pipe Termination for Direct Vent (2−Pipe) System

Roof Termination (Preferred)

Note:

36ïin. separation between pairs of inlets only required

Vertical separation between combustion air and vent

8 ¾ in. (222mm) for 3 in.(76mm)

¾ in. (172mm) for 2in. (51mm)

Maintain 12 in. (305mm) min. Clearance above highest anticipated snow level maximum of 24 in. (614mm) above roof

18 in. Maximum

(457mm)

At least 36 in.

(914mm)

At least 36 in. (914mm)

Abandoned masonry used as raceway (per code)

Concentric Vent and Combustion Air Side Termination

12 in. Min from overhang or roof (Typ.)

12 in. (305mm) separation between bottom of comï bustion air and bottom of vent (Typ.)

Maintain 12 in. (305mm) min. Clearance above highest anï ticipated snow level or grade whichever is greater (Typ.)

Note:

“A” denotes 0 To 2 in. (51mm) Between the first 2 vents Third vent (and fourth vent, if used) must be 36 in. Away (914mm)

At least 36 in.

(914mm)

Concentric Vent and Combustion Air

Roof Termination (preferred)

At least 36 in. (914mm)

Note:

“A” denotes 0 To 2 in. (51mm) Between the first 2 vents Third vent (and fourth vent, if used) must be 36 in. Away (914mm)

for directïvent systems

Maintain 12 in. (305mm) min. Clearance above highest anticipated snow level maximum of 24 in. (614mm) above roof

1 in. (25mm) maximum (Typ.) from wall to inlet

12 in. From Overhang or roof (Typ.)

At least 36 in. (914mm)

Side wall termination of less than 12 in. (305mm) above highest snow level

Maintain 12 in. (305mm) min. Clearï ance above highest anticipated snow level or grade whichever is greater (Typ.)

L12F044

Figure 48 Vent Pipe Termination for Ventilated Combustion Air System

Roof Termination (Preferred)

Ven t

(305mm)

Maintain 12 in .

minimum clearance

above highest anticipated

snow level maximum of

24 in. (610mm) above roof.

Abandoned masonry used as raceway (per code)

6 in. (152mm) minimum clearance

between wall and end of vent pipe.

10 in. (254mm) maximum pipe length

12 in. (305 mm) min. from

overhang or roof

90°

Maintain 12 in. (305mm) minimum clearance above highest anticipated snow level or grade

Side wall termination with 2 elbows (preferred)

whichever is greater.

12 in. min. (305 mm)from

overhang or roof

Sidewall Termination

with Straight Pipe (preferred)

Maintain 12 in. (305mm) minimum clearance above highest anticipated snow level or grade whichever is greater

A05091

Size the Vent and Combustion Air Pipes General

Furnace combustion air and vent pipe connections are sized for 2-in. (50 mm ND) PVC/ABS DWV pipe. The combustion air and vent pipe connections also accommodate 60mm polypropylene venting systems with outside diameters of approximately 60 mm (2−3/8 inches). Any pipe diameter

440 01 4300 00 39

change should be made outside furnace casing in vertical pipe. Any change in diameter to the pipe must be made as close to the furnace as reasonably possible.

The Maximum Vent Length for the vent pipe and combustion air pipe equals the Maximum Equivalent Vent Length (MEVL) in Table 14 or Table 16, minus the number of fittings multiplied by the deduction for each type of fitting used from Table 15.

Specifications subject to change without notice.

Page 40

NOTICE

OPTIONAL CONFIGURATION FOR COMBUSTION AIR INLET PIPE

In applications where there is a risk of excessive moisture entering the combustion air inlet pipe, a moisture trap may be added to the inlet pipe to help prevent moisture from entering the furnace from the combustion air inlet pipe. See Figure 49. When sizing venting systems, the equivalent length of the optional moisture trap (15 feet/5 M) must be taken into account

Figure 49 Optional Combustion Air Inlet Moisture Trap

Moisture Trap

As an option to prevent moisture from trickling into the furnace vestibule, a trap can be installed in the intake air pipe near the furnace. Connecting a drain line to the trap is optional as trace amounts of moisture will evaporate into the intake air stream. If the combustion air inlet is located near a moisture exhaust duct, or there are other concerns of excessive moisture being drawn into the combustion air inlet, it is encouraged to connect a drain line to the trap. The trap can be constructed from a running tee of the same diameter of the intake air pipe with EITHER a removable cap attached to a 6-inch long pipe connected to the tee or the External vent Trap Kit to help prevent contaminants from entering the furnace. See Figure 49.

Optional Combustion Air Inlet

TO CODE−APPROVED DRAIN OR CONDENSATE PUMP

Representative drawing only, some models may vary in appearance.

The External Vent Trap Kit accessory may be used as a trap for the combustion air inlet pipe if a large amount of moisture must be removed. The drain line may be connected to the same drain as the furnace condensate and the evaporator coil condensate line ONLY if the inlet air trap drain and the evaporator coil drain empty into an open segment of pipe above the drain, See Figure 12. When using the External Vent Trap Kit, refer to those instructions for proper drain connections.

The tee may also be connected to the intake air pipe on the side of the casing. See Figure 49.

In any configuration, it will be necessary to add the equivalent length of the tee (15 feet/5 M) to the Total Equivalent Vent Length of the venting system.

40 440 01 4300 00

L12F028

NOTICE

ADDITIONAL INFORMATION FOR POLYPROPYLENE VENTING SYSTEMS

Polypropylene venting systems include flexible vent pipe. These flexible vent pipes have a different equivalent vent length than straight sections of PVC/ABS DWV vent pipe. Be sure to make the appropriate deductions from the Maximum Equivalent Vent Length (MEVL), or additions to the Total Equivalent Vent Length (TEVL), when applying flexible vent pipes in polypropylene venting systems. See the polypropylene vent system manufacturer’s installation instructions for details. When using metric-sized venting systems, use these equivalencies for obtaining the proper MEVL from the Tables:

Use 2” Vent Tables for 60mm (o.d.) vent systems Use 3” Vent Tables for 80mm (o.d.) vent systems Use 4” Vent Tables for 100mm (o.d.) vent systems

Specifications subject to change without notice.

Page 41

The measured length of pipe used in a 2−pipe termination is included in the total vent length. Include deductions from the Maximum Equivalent Vent Length (MEVL) contained in the Venting Tables for elbows and flexible vent pipe. Factory accessory concentric vent terminations, or pipe lengths and elbows used for “standard” vent terminations (see vent termination figures associated with Table 14) do not require a deduction from the Maximum Equivalent Vent Length. Include a deduction for a Tee when used for Alberta and Saskatchewan terminations.

NOTE: Polypropylene venting systems MAY require additional deductions from the MEVL, or additions to the TEVL, for vent terminations and flexible pipe sections. See the polypropylene venting system manufacturer’s instructions for details on equivalent lengths of vent terminations and flexible vent pipes, and for calculating total vent lengths.

To calculate the Total Equivalent Vent Length (TEVL) of the venting system:

1. Measure the individual distance from the furnace to the termination for each pipe.

2. Count the number of elbows for each pipe.

3. For each pipe, multiply the number of elbows by the equivalent length for the type of elbow used. Record the equivalent length of all the elbows for each pipe.

4. If a Tee is used on the termination (Alberta and Saskatchewan, when required), record the equivalent length of the Tee used.

5. Calculate Total Equivalent Vent Length by adding the equivalent lengths of the fittings to the lengths of the individual vent and combustion air pipes.

6. When using polypropylene venting systems with flexible vent pipes, perform adjustments for the equivalent length of the flexible vent pipe to the calculated total equivalent venting system length. See the polypropylene vent system manufacturer’s instructions for details.

7. Select a diameter of vent pipe from Table 14 and Table 16 and note the Maximum Equivalent Vent Length (MEVL) shown for that application for that specific furnace input size. Compare the Total Equivalent Vent Length (TEVL) to the MEVL:

a. If the Total Equivalent Vent Length is shorter than the

Maximum Equivalent Vent Length for the diameter of pipe chosen, then that diameter of pipe selected may be used.

b. If the Total Vent Length is longer than the Maximum

Equivalent Vent Length for the diameter of pipe chosen, that diameter pipe MAY NOT be used for venting the furnace. Try the next larger diameter pipe.

NOTE: If the calculated Total Equivalent Vent Lengths results in different diameter pipes for the vent and combustion air, select the larger diameter for both pipes.

NOTE: If the Maximum Vent Length for diameter of the pipe selected is longer than the measured length and the equivalent length of all the fittings and terminations (TEVL), recalculate Total Equivalent Vent Length using the next smaller diameter. If the Maximum Vent Length is still longer than the longer TEVL of the vent pipe or combustion air pipe, then that diameter of pipe selected may be used.

When installing vent systems with pipe lengths of 10 ft. (3.0 M) or less, use the smallest allowable pipe diameter. Using pipe size greater than required for short venting systems may result in loss of efficiency, incomplete combustion, flame disturbance, or flame sense lockout.

For vent systems longer than 10 ft. (3.0 M), any larger diameter shown in Table 14 and Table 16 for that size model may be used.

Combustion Air and Vent Piping Insulation Guidelines

NOTE: Use closed cell, neoprene insulation or equivalent.

The vent pipe may pass through unconditioned areas. The amount of exposed pipe allowed is shown in Table 17.

1. Using winter design temperature (used in load calculations), find appropriate temperature for your application and furnace model.

2. Determine the amount of total and exposed vent pipe.

3. Determine required insulation thickness for exposed pipe length(s).

4. When combustion air inlet piping is installed above a suspended ceiling, the pipe MUST be insulated with moisture resistant insulation such as Armaflex or other equivalent type of insulation.

5. Insulate combustion air inlet piping when run in warm, humid spaces.

6. Install the insulation per the insulation manufacturer’s installation instructions.

NOTE: Pipe length (ft / M) specified for maximum pipe lengths located in unconditioned spaces (See Table 17) cannot exceed total allowable pipe length as calculated from Table 14 or

Table 16.

Configure the Furnace

! WARNING

CARBON MONOXIDE POISONING HAZARD

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

To route the vent pipe and combustion air pipe through the furnace, the manufacturer supplied kit must be used. Failure to properly seal the blower compartment from the furnace vestibule could result in the circulation of carbon monoxide throughout the structure. The vent pipe and combustion air pipe must be a continuous pipe while passing through the blower compartment. Seals supplied in this kit must be installed per the instructions provided. Follow all procedures outlined in these instructions.

Install the Vent and Combustion Air Pipes

With the furnace installed in the required position, remove the desired knockouts from the casing. It will be necessary to remove one knockout for the vent pipe and the other knockout for the combustion air connection. (See Figure 13)

Use a flat blade screwdriver and tap on the knockout on opposite sides, where the knockout meets the casing. Fold the knockout down with duct pliers and work the knockout back and forth until it is removed. Trim any excess metal from the knockout with tin snips.

The vent elbow can be rotated to the required location on the casing if necessary. See Figure 50 To rotate the vent elbow:

1. Loosen the clamp on the inlet of the vent elbow attached to the inducer.

2. Rotate the vent elbow to the required position. There are rounded notches in the vent elbow to align it with the inducer for each orientation.

3. Tighten the clamp around the vent elbow. Torque the clamp to 15 lb-in. See Figure 51 through Figure 54.

440 01 4300 00 41

Specifications subject to change without notice.

Page 42

Figure 50 Inducer Vent Elbow − Variable

MODUL ATING INDUCER ASSEMBLY

VENT ELBOW CL AMP TORQUE 15 LB−IN.

Upflow Configurations − continued

INDUCER OUTLET

Figure 51 Upflow Configurations

UPFLOW LEFT − VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

VENT PIPE CL AMP TORQUE 15 LB−IN.

VENT ELBOW

A11309

UPFLOW VERTICAL − VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

A11310

* See NOTES following figures.

Figure 52 Downflow Configurations

DOWNFLOW LEFT − VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

A11311

UPFLOW RIGHT − VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

42 440 01 4300 00

DOWNFLOW RIGHT − VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

A11312

* See NOTES following figures.

A11308

Specifications subject to change without notice.

Page 43

Downflow Configurations − continued

DOWNFLOW VERTICAL − VENT CONFIGURATION

Requires Accessory Internal Vent Kit

See Specification Sheets for current kit number

Representative drawing only, some models may vary in appearance.

* See NOTES following figures.

Figure 53 Horizontal Left Configurations

Horizontal Left Configurations − continued

HORIZONTAL LEFT − RIGHT VENT CONFIGURATION*

* Requires accessory Internal Vent Kit

Representative drawing only, some models may vary in appearance.

* See NOTES following figures.

Figure 54 Horizontal Right Configurations

L11F063

HORIZONTAL LEFT − VERTICAL VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

HORIZONTAL LEFT − LEFT VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

440 01 4300 00 43

HORIZONTAL RIGHT − VERTICAL VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

HORIZONTAL RIGHT − LEFT VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

* See NOTES following figures.

Specifications subject to change without notice.

Page 44

Horizontal Right Configurations − continued

HORIZONTAL RIGHT − RIGHT VENT CONFIGURATION

Representative drawing only, some models may vary in appearance.

* See NOTES following figures.

NOTES:

1. Attach vent pipe adapter with gasket to furnace casing.

2. Align notches in rubber coupling over standoffs on adapter. Slide clamps over the coupling.

3. Slide vent pipe through adapter and coupling into vent elbow.

4. Insert vent pipe into vent elbow.

5. Torque all clamps 15−lb.−in.

6. Attach combustion air pipe adapter with gasket to furnace.

7. Attach combustion air pipe to adapter with silicone. Pilot drill a 1/8−in. Hole in adapter and secure with a #7 x 1/2−in. Sheet metal screw.

Installing the Vent Pipe Adapter and Combustion Air Pipe Adapter

! WARNING

CARBON MONOXIDE POISONING HAZARD

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

CARBON MONOXIDE POISONING HAZARD

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

DO NOT use cement to join polypropylene venting systems. Follow the polypropylene venting system manufacturer’s instructions for installing polypropylene venting systems.

NOTE: The rubber coupling that attaches to the vent pipe adapter must be used. The adapter seals the vent pipe to the casing and reduces the strain on the vent elbow attached to the inducer.

44 440 01 4300 00

WARNING

1. Apply the gaskets to the vent pipe and combustion air pipe adapters. If supplied, remove and discard round center “slug” from interior of gasket. See Figure 41.

NOTE: The vent pipe adapter can be distinguished from the inlet pipe adapter by the absence of an internal pipe-stopping ring. The vent pipe can pass through the vent pipe adapter; it cannot pass through the inlet pipe adapter.

2. Align the screw holes in the plastic vent pipe adapter with the dimples in the casing.

3. Pilot drill the screw holes for the adapter in the casing and attach the vent pipe adapter to the furnace with sheet metal screws

4. Slide the end of the rubber vent coupling with notches in it over the standoffs on the vent pipe adapter.

5. Insert a length of vent pipe through the coupling into the outlet of the vent elbow.

6. Tighten the clamp around the outlet of the vent elbow. Torque the clamp to 15 lb−in.

NOTICE

The following instructions are for PVC/ABS DWV vent piping, only. DO NOT USE THESE TECHNIQUES FOR POLYPROPYLENE VENT PIPING SYSTEMS. See the polypropylene vent system manufacturer’s instructions for installing polypropylene venting systems.

Install the remaining vent and combustion air pipes as shown below. It is recommended that all pipes be cut, prepared, and preassembled before permanently cementing any joint.

1. Working from furnace to outside, cut pipe to required length(s).

2. De−burr inside and outside of pipe.

3. Chamfer outside edge of pipe for better distribution of primer and cement.

4. Clean and dry all surfaces to be joined.

5. Check dry fit of pipe and mark insertion depth on pipe.

6. Insert the vent pipe into the vent elbow.

7. Torque clamp on vent elbow 15 lb−in.

8. Torque clamp on vent coupling 15 lb−in.

9. Insert the combustion air pipe into the adapter.

10. Pilot drill a screw hole through the adapter into the combustion air pipe and secure the pipe to the adapter with sheet metal screws. DO NOT DRILL INTO POLYPROPYLENE VENT PIPES. Use an optional accessory vent coupling, if needed.

11. Seal around the combustion air pipe with silicone or foil tape. SILICONE SEALERS MAY NOT BE APPROPRIATE FOR POLYPROPYLENE VENT SYSTEMS. SEE POLYPROPYLENE VENT SYSTEM MANUFACTRUER’S INSTRUCTIONS.

12. After pipes have been cut and preassembled, apply generous layer of cement primer to pipe fitting socket and end of pipe to insertion mark. Quickly apply approved cement to end of pipe and fitting socket (over primer). Apply cement in a light, uniform coat on inside of socket to prevent buildup of excess cement. Apply second coat. DO NOT CEMENT POLYPROPYLENE FITTINGS.

13. While cement is still wet, twist pipe into socket with 1/4−in. turn. Be sure pipe is fully inserted into fitting socket.

14. Wipe excess cement from joint. A continuous bead of cement will be visible around perimeter of a properly made joint.

15. Handle pipe joints carefully until cement sets.

16. Horizontal portions of the venting system shall be supported to prevent sagging. Support combustion air

Specifications subject to change without notice.

Page 45

piping and vent piping a minimum of every 5 ft. (1.5M) [3 ft. (.91M) for SDR−21 or −26 PVC] using perforated metal hanging strap or commercially available hangars designed to support plastic pipe.

17. Prevent condensate from accumulating in the pipes by sloping the combustion air piping and vent piping downward towards furnace a minimum of 1/4-in. per linear ft. with no sags between hangers.

18. Complete the vent and combustion air pipe installation by connecting to the concentric vent or by installing the required termination elbows as shown in Figure 46, Figure 47, Figure 55 and Figure 56. For ventilated combustion air terminations, see Figure 48.

19. Use appropriate methods to seal openings where combustion air pipe and vent pipe pass through roof or sidewall.

CARBON MONOXIDE POISONING HAZARD

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

DO NOT use cement to join polypropylene venting systems. Follow the polypropylene venting system manufacturer’s instructions for installing polypropylene venting systems.

WARNING

Optional Installation of the vent pipe

NOTE: DO NOT USE THIS TECHNIQUE FOR

POLYPROPYLENE VENTING SYSTEMS. This option provides a disconnect point for the vent pipe. The

vent pipe must be cemented to the plastic vent pipe adapter to maintain a sealed vestibule. See Figure 42 and Figure 43

1. Insert a length of vent pipe through the casing into the outlet of the vent elbow.

2. Slide the plastic vent pipe adapter over the length of the vent pipe down to the furnace casing. Mark the pipe where it is flush with the outlet of the adapter.

3. Remove the pipe from the furnace and the adapter and cut off any excess pipe.

4. Clean and prime the end of the pipe that is flush with the vent adapter with a primer that is appropriate for the type of pipe being used.

5. Re−insert the pipe through the casing into the vent elbow.

6. Tighten the clamp around the outlet of the vent elbow. Torque the clamp to 15 lb−in.

7. Apply cement to the end of the pipe and to the inside of the plastic vent adapter.

8. Slide the adapter over the vent pipe and align the screw holes in the adapter with the dimples in the furnace casing.

9. Pilot drill 1/8−in. screw holes for the adapter in the casing and secure the adapter to the furnace with sheet metal screws.

10. Loosen the clamps on the rubber vent coupling.

11. Slide the end of the coupling with notches in it over the standoffs in the vent pipe adapter.

12. Tighten the clamp of the coupling over the vent pipe adapter. Torque the lower clamp around the vent pipe adapter to 15 lb−in.

13. Pilot drill a 1/8−in. hole in the combustion air pipe adapter.

14. Complete the vent and combustion air pipe as shown in “Install the Vent and Combustion Air Pipe”

NOTICE

FOR POLYPROPYLENE VENTING SYSTEMS

When using polypropylene venting systems, all venting materials used, including the vent terminations, must be from the same manufacturer.

Installing the Vent Termination

Roof Terminations

A roof termination of any type will require a 4-in. (102 mm) flashing for a 2−in. (50 mm ND) concentric vent or a 5−in. (127 mm) diameter flashing for a 3-in. (80 mm ND) concentric vent kit. For 2-pipe or single pipe vent systems, a flashing for each pipe of the required diameter will be necessary.

It is recommended that the flashing be installed by a roofer or competent professional prior to installing the concentric vent. The terminations can be installed on a flat or pitched roof.

Concentric Vent

Single or multiple concentric vent must be installed as shown in Figure 47. Maintain the required separation distance between vents or pairs of vents as shown in Figure 47 and all clearance shown in Figure 57.

NOTE: Follow the instructions of the vent terminal manufacturer. These instructions are provided as a reference only.

Cut one 4−in. (102 mm) diameter hole for 2−in. (50 mm ND) kit, or one 5−in. (127 mm) diameter hole for 3−in. (80 mm ND) kit in the desired location.

Loosely assemble concentric vent/combustion air termination components together using instructions in kit.

Slide assembled kit with rain shield REMOVED through hole in wall or roof flashing.

NOTE: Do not allow insulation or other materials to accumulate inside of pipe assembly when installing it through hole.

Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping. DO NOT CEMENT POLYPROPYLENE FITTINGS.

Two−Pipe (Direct Vent)Terminations

Two pipe vent terminals must be installed as shown in Figure 47 and Figure 48. Maintain the required separation distance between vents or pairs of vents as shown in Figure 47 and Figure 48 and all clearance shown in Figure 57 or Figure 58.

NOTICE

RECOMMENDED SUPPORT FOR VENT TERMINATIONS

It is recommended that rooftop vent terminations in excess of 36 inches (1.0 M) in vertical length be supported by EITHER the Direct Vent Termination Kit shown in Table 12 or by field-supplied brackets or supports fastened to the structure.

Cut the required number of holes in the roof or sidewall for vent and combustion air pipes. Sidewall holes for 2-pipe vent terminations should be side-by-side, allowing space between the pipes for the elbows to fit on the pipes.

Holes in the roof for direct−vent (two−pipe) terminations should be spaced no more than 18−in. (457 mm) apart to help avoid vent gas recirculation into combustion air intake.

Termination elbows will be installed after the vent and (if used) combustion air pipe is installed.

440 01 4300 00 45

Specifications subject to change without notice.

Page 46

Sidewall Terminations

Concentric Vent

NOTE: Follow the instructions of the vent terminal

manufacturer. These instructions are provided as a reference, only.

Determine an appropriate location for termination kit using the guidelines provided in section “Locating The Vent Termination”

in this instruction.

1. Cut one 4−in. diameter hole for 2−in. kit, or one 5−in. diameter hole for 3−in. kit.

2. Loosely assemble concentric vent/combustion air termination components together using instructions in kit.

3. Slide assembled kit with rain shield REMOVED through hole.

NOTE: Do not allow insulation or other materials to accumulate inside of pipe assembly when installing it through hole.

4. Locate assembly through sidewall with rain shield positioned no more than 1−in. (25 mm) from wall as shown in Figure 47.

5. Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping. DO NOT CEMENT POLYPROPYLENE FITTINGS.

Direct Vent (2-Pipe) Termination

NOTE: Follow the instructions of the vent terminal

manufacturer. These instructions are provided as a reference, only.

Determine an appropriate location for termination kit using the guidelines provided in section “Locating The Vent Termination”

in this instruction.

1. Cut two holes, one for each pipe, of appropriate size for pipe size being used.

2. Loosely install elbow in bracket (if used) and place assembly on combustion−air pipe.

3. Install bracket as shown in Figure 44 and Figure 46.

NOTE: For applications using vent pipe option indicated by dashed lines in Figure 47 and Figure 48, rotate vent elbow 90 from position.

4. Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping. DO NOT CEMENT POLYPROPYLENE FITTINGS.

For Ventilated Combustion Air Terminations, terminate as shown in Figure 48.

(Direct Vent / 2-Pipe System ONLY)

When two or more furnaces are vented near each other, two vent terminations may be installed as shown in Figure 44 and Figure 46, but next vent termination, or pair of vent terminations, must be at least 36−in. (914 mm) away from first two terminations. It is important that vent terminations be made as shown in Figure 44 and Figure 46 to avoid recirculation of gases.

Inducer Outlet Restrictor

The loose parts bag may contain an inducer outlet restrictor. The outlet restrictor is NOT used on these furnaces. Discard restrictor.

NOTICE

RECOMMENDED SUPPORT FOR VENT TERMINATIONS

It is recommended that side−wall vent terminations in excess of 24 inches (0.6 M) in vertical length be supported by EITHER the Direct Vent Termination Kit in Table 12 or by field-supplied brackets or supports fastened to the structure.

46 440 01 4300 00

Specifications subject to change without notice.

Page 47

Figure 55 Crawl Space Vent Termination

Ventilated Combustion Air intake pipe

Pipe hangar

3” (76 mm)

Ventilated Combustion Air intake termination in crawl

space

Figure 56 Attic Vent Termination

12” (305 mm)

CRAWL SPACE

Ventilated Combustion Air intake pipe

Vent through roof flashing

12” (305 mm) min. above higest level of insulation

440 01 4300 00 47

ATTIC

Specifications subject to change without notice.

L11F016

Page 48

Figure 57 Direct Vent Termination Clearance

NOTE: The following is based upon National codes for gas appliances, and is provided as a reference. Refer to Local codes which may supersede these standards and/or recommendations.

Item Clearance Description

Clearance above grade, veranda, porch, deck, balcony or

B Clearance to a window or door that may be opened

C Clearance to a permanently closed window

Vertical clearance to a ventilated soffit located above the

terminal within a horizontal distance of 2 feet (61 cm) from

E Clearance to an unventilated soffit F Clearance to an outside corner

G Clearance to an inside corner

Clearance to each side of the centerline extended above

K Clearance to a mechanical air supply inlet 6 ft. (1.8 M) 3ft. (.9 M)

L Clearance under a veranda, porch, deck, or balcony

0 Clearance from a plumbing vent stack 3 ft. (.9 M) 3 ft. (.9 M)

u greater than, w greater than or equal to, t less than, v less than or equal to

electrical meter or gas service regulator assembly

I Clearance to service regulator vent outlet 3ft. (.9 M) See Note 4.

Clearance to non—mechanical air supply inlet to building or

the combustion air inlet to any other appliance

Clearance to each side of the centerline extended above or

below vent terminal of the furnace to a dryer or water heater

vent, or other appliance's direct vent intake or exhaust

Inlet air clearance to a moisture exhaust duct

Clearance above paved sidewalk or paved driveway located

anticipated snow level

the centerline of the terminal

(dryer vent, spa exhaust, etc.)

on public property

Notes:

1. In accordance with the current CAN/CSA B149.1, Natural Gas and Propane Installation Code.

2. In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code

3. NOTE: This table is based upon National codes for gas appliances, and are provided as a reference.

Refer to Local codes which may supersede these standards and/or recommendations.

4. For clearances not specified in ANSI Z223.1/NFPA 54 or CAN/CSA B 149.1, clearances shall be in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation instructions.

5. When locating vent terminations, consideration must be given to prevailing winds, location, and other conditions which may cause recirculation of the combustion products of adjacent vents. Recirculation can cause poor combustion, inlet condensate problems, and accelerated corrosion of the heat exchangers.

6. Design and position vent outlets to avoid ice buildup on and moisture damage to surrounding surfaces.

7. The vent for this appliance shall not terminate:

a. Near soffit vents of crawl space vents or other areas where condensate or vapor could create a nuisance or hazard or property damage; or b. Where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valves, or other equipment.

8. Avoid venting under a deck or large overhang. Recirculation could occur and cause performance or system problems. Ice buildup may occur.

48 440 01 4300 00

Canadian Installations

(per CAN/CSA B149.1)

12 in. (305 mm)

18 in. (457 mm) above roof surface.

12 in. (305 mm) for appliances >10,000 Btuh (3 kW)

and </=100,000 Btuh ( 30 kW),

36 in. (914 mm) for appliances >100,000 Btuh (30 kW)

For clearances not specified in ANSI Z223.1/NFPA 54 or CAN/CSA B149.1, clearances shall be in accordance with local

installation codes and the requirements of the gas supplier and the manufacturer's installation instructions.

3 ft. (.9 M) within 15 ft. (4.6 M)

above the meter/regulator assembly.

12 in. (305 mm) for appliances >10,000 Btuh(3 kW)

and </= 100,000 Btuh ( 30 kW),

36 in. (914 mm) for appliances >100,000 Btuh (30 kW)

Permitted only if veranda, porch, deck, or balcony is fully open on a

Vent shall not terminate above a sidewalk or paved driveway that is

located between two single family dwellings and serves both

Specifications subject to change without notice.

12 in. (305 mm).

minimum of two sides beneath the floor.

12 in. (305 mm) 12 in. (305 mm)

3 ft. (.9 M) 3 ft. (.9 M)

7 ft. (2.1 M).

dwellings.

(1 )

(per ANSI Z223.1/NFPA 54)

9 in. (229 mm) for appliances >10,000 Btuh (3 kW)

and </= 50,000 Btuh ( 15 kW),

12 in. (305 mm) for appliances >50,000 Btuh (15kW)

Manufacturer's Recommendation: See Notes 38.

3 ft. (.9 M) within 15 ft. (4.6 M)

above the meter/regulator assembly.

9 in. (9 mm) for appliances >10,000 Btuh (3 kW)

and </= 50,000 Btuh (15 kW),

12 in.(305 mm) for appliances >50,000 Btuh (15kW)

Manufacturer's Recommendation: See Notes 38.

U.S. Installations

12 in. (305 mm)

See Note 4.

25−24−65−2

(2 )

Page 49

Figure 58 Other than Direct Vent Clearance − Ventilated Combustion Air Option

NOTE: The following is based upon National codes for gas appliances, and is provided as a reference. Refer to Local codes which may supersede these standards and/or recommendations.

Item

Clearance above grade, veranda, porch, deck, balcony or

B Clearance to a window or door that may be opened

C Clearance to a permanently closed window

Vertical clearance to a ventilated soffit located above the

terminal within a horizontal distance of 2 feet (61 cm) from

E Clearance to an unventilated soffit F Clearance to an outside corner

G Clearance to an inside corner

Clearance to each side of the centerline extended above

I Clearance to service regulator vent outlet 3ft. (.9 M) See Note 4.

K Clearance to a mechanical air supply inlet 6 ft. (1.8 M) 3ft. (.9 M)

L Clearance under a veranda, porch, deck, or balcony

0 Clearance from a plumbing vent stack 3 ft. (.9 M) 3 ft. (.9 M)

u greater than, w greater than or equal to, t less than, v less than or equal to

electrical meter or gas service regulator assembly

Clearance to non—mechanical air supply inlet to building or

the combustion air inlet to any other appliance

Clearance to each side of the centerline extended above or

below vent terminal of the furnace to a dryer or water heater

vent, or other appliance's direct vent intake or exhaust

Inlet air clearance to a moisture exhaust duct

Clearance above paved sidewalk or paved driveway located

Clearance Description

anticipated snow level

the centerline of the terminal

(dryer vent, spa exhaust, etc.)

on public property

Notes:

1. In accordance with the current CAN/CSA B149.1, Natural Gas and Propane Installation Code.

2. In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code

3. NOTE: This table is based upon National codes for gas appliances, and are provided as a reference.

Refer to Local codes which may supersede these standards and/or recommendations.

5. When locating vent terminations, consideration must be given to prevailing winds, location, and other conditions which may cause recirculation of the combustion products of adjacent vents. Recirculation can cause poor combustion, inlet condensation problems, and/or accelerated corrosion of the heat exchangers.

6. Design and position vent outlets to avoid ice buildup on and moisture damage to surrounding surfaces.

7. The vent for this appliance shall not terminate:

8. These National standards apply to all nondirectvent gas appliances. Contact Local code officials for additional requirements and/or exclusions.

440 01 4300 00 49

Canadian Installations

(per CAN/CSA B149.1)

12 in. (305 mm)

18 in. (457 mm) above roof surface.

12 in. (305 mm) for appliances >10,000 Btuh (3 kW)

and </=100,000 Btuh ( 30 kW),

36 in. (914 mm) for appliances >100,000 Btuh (30 kW)

For clearances not specified in ANSI Z223.1/NFPA 54 or CAN/CSA B149.1, clearances shall be in accordance with local

installation codes and the requirements of the gas supplier and the manufacturer's installation instructions.

3 ft. (.9 M) within 15 ft. (4.6 M)

above the meter/regulator assembly.

12 in. (305 mm) for appliances >10,000 Btuh(3 kW)

and </= 100,000 Btuh ( 30 kW),

36 in. (914 mm) for appliances >100,000 Btuh (30 kW)

Permitted only if veranda, porch, deck, or balcony is fully open

on a minimum of two sides beneath the floor.

Vent shall not terminate above a sidewalk or paved driveway

that is located between two singlefamily dwellings and serves

Specifications subject to change without notice.

12 in. (305 mm).

12 in. (305 mm) 12 in. (305 mm)

3 ft. (.9 M) 3 ft. (.9 M)

7 ft. (2.1 M).

both dwellings.

(1 )

Manufacturer's Recommendation: See Notes 38.

(per ANSI Z223.1/NFPA 54)

4ft. (1.2M) below or to the side of the opening,

1 ft (.3M) above the opening.

Manufacturer's Recommendation: See Note 8.

3 ft. (.9 M) within 15 ft. (4.6 M)

above the meter/regulator assembly.

4ft. (1.2M) below or to the side of the opening,

1 ft (.3M) above the opening.

Manufacturer's Recommendation: See Note 8

Manufacturer's Recommendation: See Notes 38.

U.S. Installations

12 in. (305 mm)

See Note 4.

7ft. (2.1M)

(2 )

25−24−65−2

Page 50

Table 14 MAXIMUM EQUIVALENT VENT LENGTH - Feet (Meters)

Note: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations

Use Table 15 − DEDUCTIONS FROM MEVL to determine allowable vent length for each application.

Altitude

FT (M)

0 to 2000

(0 to 610)

2001 to 3000

(610 to 914)

3001 to 4000

(914 to 1219)

4001 to 4500

(1219 to 1370)

See notes at end of Venting Tables. See Table 16 for altitudes over 4500 ft (1370m).

Unit Size

BTU/Hr

60,000 55 (16.8) 135 (41.1) 235 (71.6) 265 (80.8) NA

80,000 35 (10.7) 130 (39.6) 175 (53.3) 235 (71.6) 265 (80.8) 100,000 NA 50 (15.2) 11 0 (33.5) 235 (71.6) 265 (80.8) 120,000 NA NA 15 (4.6) 100 (30.5) 250 (76.2)

60,000 45 (13.7) 127 (38.7) 222 (67.7) 250 (76.2) NA

80,000 30 (9.1) 90 (27.4) 165 (50.3) 222 (67.7) 249 (75.9) 100,000 NA 40 (12.2) 104 (31.7) 223 (68.0) 250 (76.2) 120,000 NA NA 11 (3.4) 93 (28.3) 237 (72.2)

60,000 40 (12.2) 119 (36.3) 210 (64.0) 235 (71.6) NA

80,000 25 (7.6) 85 (25.9) 155 (47.2) 210 (64.0) 232 (70.7) 100,000 NA 40 (12.2) 98 (29.9) 211 (64.3) 236 (71.9) 120,000 NA NA 8 (2.4) 86 (26.2) 224 (68.3)

60,000 35 (10.7) 115 (35.1) 204 (62.2) 228 (69.5) NA

80,000 23 (7.0) 85 (25.9) 150 (45.7) 202 (61.6) 224 (68.3) 100,000 NA 40 (12.2) 94 (28.7) 205 (62.5) 229 (69.8) 120,000 NA NA NA 83 (25.3) 217 (66.1)

1-1/2 2 2-1/2 3 4

DIRECT VENT (2-PIPE) AND VENTILATED COMBUSTION AIR

Vent Pipe Diameter (in.)

Table 15 DEDUCTIONS FROM MAXIMUM EQUIVALENT VENT LENGTH - Feet (Meters)

Pipe Diameter (in): 1-1/2 2 2-1/2 3 4

Mitered 90º Elbow 8 (2.4) 8 (2.4) 8 (2.4) 8 (2.4) 8 (2.4)

Medium Radius 90º Elbow 5 (1.5) 5 (1.5) 5 (1.5) 5 (1.5) 5 (1.5)

Long Radius 90º Elbow 3 (0.9) 3 (0.9) 3 (0.9) 3 (0.9) 3 (0.9)

Mitered 45º Elbow 4 (1.2) 4 (1.2) 4 (1.2) 4 (1.2) 4 (1.2)

Medium Radius 45º Elbow 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8)

Long Radius 45º Elbow 1.5 (0.5) 1.5 (0.5) 1.5 (0.5) 1.5 (0.5) 1.5 (0.5)

Tee 16 (4.9) 16 (4.9) 16 (4.9) 16 (4.9) 16 (4.9)

* Note: 3- and 4-inch vent pipe systems require long radius elbows.

Figure 59 Elbows Configurations

LONG MEDIUM MITERED

L11F082

Figure 60 Vent Terminal Configurations

L11F083

L11F084

Venting System Length Calculations

The Total Equivalent Vent Length for EACH combustion air or vent pipe equals the length of the venting system, plus the equivalent length of elbows used in the venting system from Table 15. Standard vent terminations or factory accessory concentric vent terminations count for zero deduction. See vent system manufacturer’s data for equivalent lengths of flexible vent pipe or other termination systems. DO NOT ASSUME that one foot of flexible vent pipe equals one foot of straight PVC/ABS DWV vent pipe. Compare the Total Equivalent Vent Length to the Maximum Equivalent Vent Lengths in Table 14 and Table 16.

50 440 01 4300 00

Specifications subject to change without notice.

Page 51

Example 1

A direct-vent 60,000 BTUH furnace installed at 2100 ft. (640M). Venting system includes FOR EACH PIPE 100 feet (30 M) of vent pipe, 95 feet (28 M) of combustion air inlet pipe, (3) 90º long-radius elbows, (2) 45º long-radius elbows, and a factory accessory concentric vent kit.

Can this application use 2-in. (50 mm ND) PVC/ABS DWV vent piping?

100 ft.

(30 M)

9 ft.

(2.7 M)

3 ft.

(0.9 M)

112 ft.

(34 M)

127 ft.

(38.7 M)

Measure the required linear length of air inlet and vent pipe; insert the longest of the two here

Add equiv length of (3) 90º long-radius elbows (use the highest number of elbows for either the vent or inlet pipe)

Add equiv length of (2) 45º long-radius elbows (use the highest number of elbows for either the vent or inlet pipe)

Add equiv length of factory concentric vent term 0 ft. From Table 15

Add correction for flexible vent pipe, if any 0 ft.

Total Equivalent Vent Length (TEVL)

Maximum Equivalent Vent Length (MEVL)

Is TEVL less than MEVL? YES Therefore, 2” pipe MAY be used

3 x

2 x

3 ft

(0.9 M)

1.5 ft

(0.5 M)

Use length of the longer of the vent or air inlet piping system

From Table 15

From Vent Manufacturer’s instructions; zero for PVC/ABS DWV

Add all of the above lines

For 2” pipe from Table 14

Example 2

A direct-vent 60,000 BTUH furnace installed at 2100 ft. (640M). Venting system includes FOR EACH PIPE 100 feet (30 M) of vent pipe, 95 feet (28 M) of combustion air inlet pipe, (3) 90º long-radius elbows, and a polypropylene concentric vent kit. Also includes 20 feet (6.1 M) of flexible polypropylene vent pipe, included within the 100 feet (30 M) of vent pipe.

Assume that one meter of flexible 60mm or 80mm polypropylene pipe equals 1.8 meters of PVC/ABS pipe. VERIFY FROM VENT MANUFACTURER’S INSTRUCTIONS.

Can this application use 60mm (o.d.) polypropylene vent piping? If not, what size piping can be used?

100 ft.

(30 M)

9 ft.

(2.7 M)

0 ft.

(0 M)

30 ft. (9 M)

36 ft.

(11 M) 175 ft.

(53 M)

127 ft.

(38.7 M)

250 ft.

(76.2 M)

Measure the required linear length of air inlet and vent pipe; insert the longest of the two here

Add equiv length of (3) 90º long-radius elbows (use the highest number of elbows for either the vent or inlet pipe)

Add equiv length of (2) 45º long-radius elbows (use the highest number of elbows for either the vent or inlet pipe)

Add equiv length of factory concentric vent term 9 M x 3.3 ft/M =

Add correction for flexible vent pipe, if any 1.8 x

Total Equivalent Vent Length (TEVL)

Maximum Equivalent Vent Length (MEVL)

Is TEVL less than MEVL? NO

Maximum Equivalent Vent Length (MEVL)

Is TEVL less than MEVL? YES Therefore, 80mm pipe MAY be used

3 x

0 x =

3 ft

(0.9 M)

20 ft

(6.1 M)

Use length of the longer of the vent or air inlet piping system

From Vent Manufacturer’s instructions

Add all of the above lines

For 2” pipe from Table 14

Therefore, 60mm pipe may NOT be used; try 80mm

For 3” pipe from Table 14

440 01 4300 00 51

Specifications subject to change without notice.

Page 52

Table 16 MAXIMUM EQUIVALENT VENT LENGTH - Feet (Meters)

Note: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations.

Use DEDUCTIONS FROM MEVL − Table 15 to determine allowable vent length for each application.

Altitude

FT (M)

4501 to 5000

(1370 to 1524)

5001 to 6000

(1524 to 1829)

6001 to 7000

(1829 to 2134)

7001 to 8000

(2134 to 2438)

8001 to 9000

(2438 to 2743)

9001 to 10,000

(2743 to 3048)

Note: Vent sizing for Canadian installations over 4500 ft. (1370 M) above sea level are subject to acceptance

Unit Size

60,000 35 (10.7) 111 (33.8) 198 (60.4) 221 (67.4) NA

80,000 23 (7.0) 85 (25.9) 146 (44.5) 195 (59.4) 216 (65.8) 100,000 NA 40 (12.2) 91 (27.7) 200 (61.0) 222 (67.7) 120,000 NA NA NA 80 (24.4) 211 (64.3)

60,000 37 (11.3) 103 (31.4) 186 (56.7) 207 (63.1) NA

80,000 22 (6.7) 76 (23.2) 137 (41.8) 183 (55.8) 200 (61.0) 100,000 NA 33 (10.1) 85 (25.9) 188 (57.3) 208 (63.4) 120,000 NA NA NA 74 (22.6) 199 (60.7)

60,000 35 (10.7) 96 (29.3) 174 (53.0) 194 (59.1) NA

80,000 20 (6.1) 71 (21.6) 120 (36.6) 171 (52.1) 185 (56.4) 100,000 NA 31 (9.4) 79 (24.1) 178 (54.3) 195 (59.4) 120,000 NA NA NA 68 (20.7) 187 (57.0)

60,000 32 (9.8) 89 (27.1) 163 (49.7) 181 (55.2) NA

80,000 18 (5.5) 66 (20.1) 120 (36.6) 159 (48.5) 170 (51.8) 100,000 NA 29 (8.8) 73 (22.3) 167 (50.9) 182 (55.5) 120,000 NA NA NA 62 (18.9) 175 (53.3)

60,000 30 (9.1) 82 (25.0) 152 (46.3) 168 (51.2) NA

80,000 17 (5.2) 62 (18.9) 111 (33.8) 148 (45.1) 156 (47.5) 100,000 NA 27 (8.2) 67 (20.4) 157 (47.9) 170 (51.8) 120,000 NA NA NA 56 (17.1) 164 (50.0)

60,000 27 (8.2) 76 (23.2) 142 (43.3) 156 (47.5) NA

80,000 15 (4.6) 57 (17.4) 103 (31.4) 137 (41.8) 142 (43.3) 100,000 NA 24 (7.3) 62 (18.9) 147 (44.8) 157 (47.9) 120,000 NA NA NA 51 (15.5) 153 (46.6)

by the local authorities having jurisdiction.

DIRECT VENT (2-PIPE) AND VENTILATED COMBUSTION AIR

Vent Pipe Diameter

1-1/2 2 2-1/2 3 4

NOTES:

1. Use only the vent pipe sizes shown for each furnace. It is NOT necessary to choose the smallest diameter pipe possible for venting.

2. NA = Not allowed. Pressure switch will not close, or flame disturbance may result .

3. Vent sizing for Canadian installations over 4500 ft. (1370 m) above sea level are subject to acceptance by local authorities having jurisdiction.

4. Size both the combustion air and vent pipe independently, then use the larger size for both pipes.

5. Assume two 45° degree elbows equal one 90° degree elbow. Wide radius elbows are desirable and may be required in some cases.

6. Elbow and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.

7. The minimum pipe length is 5 (1.5) linear feet (meters) for all applications.

8. Use 3−in (76 mm) diameter vent termination kit for installations requiring a 4−in (102 mm) diameter pipe.

52 440 01 4300 00

Specifications subject to change without notice.

Page 53

Table 17

(F/G)9MAE

Max. Heat

Input

60,000

Winter

Design

Temp °F (°C)

20 (-10)

0 (-20)

-20 (-30)

-40 (-40)

Maximum Allowable Exposed Vent Lengths in Unconditioned Space

Maximum Length of Uninsulated and Insulated Vent Pipe-Ft (M)

No Insulation 3/8-in. (9.5 mm) 1/2-in. (12.7 mm)

Pipe Length

in Ft. & M

Ft. 34.0 29.0 28.0 23.0 N/A 55.0 88.0 79.0 69.0 N/A 55.0 104.0 93.0 81.0 N/A

M 10.4 8.8 8.5 7.0 N/A 16.8 26.8 24.1 21.0 N/A 16.8 31.7 28.3 24.7 N/A

Ft. 14.0 9.0 7.0 0.0 N/A 55.0 49.0 43.0 34.0 N/A 55.0 60.0 52.0 42.0 N/A

M 4.3 2.7 2.1 0.0 N/A 16.8 14.9 13.1 10.4 N/A 16.8 18.3 15.8 12.8 N/A

Ft. 5.0 0.0 0.0 0.0 N/A 41.0 32.0 26.0 18.0 N/A 50.0 40.0 33.0 24.0 N/A

M 1.5 0.0 0.0 0.0 N/A 12.5 9.8 7.9 5.5 N/A 15.2 12.2 10.1 7.3 N/A

Ft. 0.0 0.0 0.0 0.0 N/A 30.0 21.0 16.0 8.0 N/A 37.0 28.0 22.0 13.0 N/A

M 0.0 0.0 0.0 0.0 N/A 9.1 6.4 4.9 2.4 N/A 11.3 8.5 6.7 4.0 N/A

Pipe Diameter-inches (mm) Pipe Diameter-inches (mm) Pipe Diameter-inches (mm)

1.5 2.0 2.5 3.0 4.0 1.5 2.0 2.5 3.0 4.0 1.5 2.0 2.5 3.0 4.0

(38) (51) (64) (76) (102) (38) (51) (64) (76) (102) (38) (51) (64) (76) (102)

60,600

80,000

100,000

120,000