Amana AMV9, ACV9 User Manual

AMV9/ACV9

GAS

-S

TAGE

FIRED WARM AIR FURNACE

ARIABLE

INSTALLATION INSTRUCTIONS

Installer: Affix all manuals adjacent to the unit.

(T ype FSP CATEGORY IV Direct or Non Direct Vent Air Furnace)

These furnaces comply with requirements embodied in the American National S tandard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces.

PEED

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.

ATTENTION INSTALLING PERSONNEL

As a professional installer you have an obligation to know the product better than the customer. This includes all safety

precautions and related items.

Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety

warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous than

when the unit is in operation.

Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a

customer in its safe use.

Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good safety

practices...follow them.

The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is

a direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.

*NOTE: Please contact your distributor or our

website for the applicable product data book

referred to in this manual.

is a trademark of Maytag Corporation and is used under

www.amana-hac.com

IO-253H

07/06

Table of Contents

I. Component Identification ............................................................................................................................................... 5

II. Safety .............................................................................................................................................................................. 6

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................................................................................................... 6

III. Product Application ...................................................................................................................................................... 6

IV . Location Requirement s & Considerations.................................................................................................................. 7

GENERAL ......................................................................................................................................................... 7

LEARANCES AND ACCESSIBILITY ........................................................................................................................... 8

URNACE SUSPENSION ........................................................................................................................................ 8

XISTING FURNACE REMOVAL .............................................................................................................................. 8

HERMOSTAT LOCATION ....................................................................................................................................... 9

V. Combustion & Ventilation Air Requirements ............................................................................................................... 9

VI. Installation Positions ...................................................................................................................................................11

VII. Horizontal Applications & Considerations ................................................................................................................11

GENERAL ........................................................................................................................................................11

RAIN TRAP AND LINES .....................................................................................................................................11

EVELING ........................................................................................................................................................11

L TERNATE VENT/FLUE AND COMBUSTION AIR CONNECTIONS .....................................................................................11

LTERNATE ELECTRICAL AND GAS LINE CONNECTIONS ............................................................................................ 12

RAIN PAN ..................................................................................................................................................... 12

REEZE PROTECTION ........................................................................................................................................ 12

URNACE SUSPENSION ...................................................................................................................................... 12

VIII. Propane Gas /High Altitude Installations............................................................................................................... 12

IX. Vent/Flue Pipe & Combustion Air Pipe ..................................................................................................................... 12

GENERAL ....................................................................................................................................................... 12

UAL CERTIFICATION : NON-DIRECT/DIRECT VENT ................................................................................................... 12

ATERIALS AND JOINING METHODS ..................................................................................................................... 13

ROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES ................................................................................. 13

ERMINATION LOCATIONS ................................................................................................................................... 13

ANADIAN VENTING REQUIREMENTS..................................................................................................................... 13

TANDARD FURNACE CONNECTIONS ..................................................................................................................... 14

LTERNATE FURNACE CONNECTIONS ..................................................................................................................... 14

ON-DIRECT VENT (SINGLE PIPE) PIPING ............................................................................................................ 16

IRECT VENT (DUAL PIPE) PIPING ...................................................................................................................... 17

ENT/INT AKE TERMINATIONS FOR INSTALLATION OF MULTIPLE DIRECT VENT FURNACES .................................................. 18

ONCENTRIC VENT TERMINATION ......................................................................................................................... 18

X. Condensate Drain Lines & Drain Trap........................................................................................................................ 18

GENERAL ....................................................................................................................................................... 18

PRIGHT INSTALLATIONS ..................................................................................................................................... 19

ORIZONT AL INSTALLATIONS ................................................................................................................................20

XI. Electrical Connections................................................................................................................................................ 21

WIRING HARNESS ............................................................................................................................................ 21

OLT LINE CONNECTIONS ............................................................................................................................ 21

115 V

OLT THERMOSTA T WIRING ............................................................................................................................ 22

24 V

INGLE-STAGE THERMOSTA T APPLICATION ............................................................................................................. 22

OLT DEHUMIDISTAT WIRING .......................................................................................................................... 22

24 V

OSSIL FUEL APPLICATIONS ............................................................................................................................... 23

OLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) ....................................... 23

115 V

OLT HUMIDIFIER ........................................................................................................................................ 23

24 V

XII. Gas Supply and Piping.............................................................................................................................................. 23

GENERAL ....................................................................................................................................................... 23

AS PIPING CONNECTIONS ................................................................................................................................24

ROPANE GAS TANKS AND PIPING ...................................................................................................................... 25

XIII. Circulating Air & Filters ............................................................................................................................................ 26

DUCTWORK - AIR FLOW ..................................................................................................................................... 26

OTTOM RETURN AIR OPENING [UPFLOW MODELS]............................................................................................... 26

ILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCTWORK ....................................................... 27

PRIGHT INSTALLATIONS ..................................................................................................................................... 27

ORIZONT AL INSTALLATIONS ................................................................................................................................28

Table of Contents

XIV. Startup Procedure & Adjustment............................................................................................................................. 28

HEAT ANTICIP ATOR SETTING ................................................................................................................................28

RAIN TRAP PRIMING ....................................................................................................................................... 28

URNACE OPERATION ......................................................................................................................................... 28

AS SUPPLY PRESSURE MEASUREMENT.............................................................................................................. 28

AS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT .................................................................................. 29

AS INPUT RATE MEASUREMENT (NATURAL GAS ONLY)......................................................................................... 29

EMPERATURE RISE ......................................................................................................................................... 30

IRCULATOR BLOWER SPEEDS ........................................................................................................................... 30

LOWER HEAT OFF DELAY TIMINGS ................................................................................................................... 32

XV. Normal Sequence of Operation ................................................................................................................................ 32

POWER UP ..................................................................................................................................................... 32

EATING MODE ............................................................................................................................................... 32

OOLING MODE .............................................................................................................................................. 32

AN ONLY MODE ............................................................................................................................................. 33

XVI. Operational Checks .................................................................................................................................................. 33

BURNER FLAME ............................................................................................................................................... 33

XVII. Safety Circuit Description ....................................................................................................................................... 33

GENERAL ....................................................................................................................................................... 33

NTEGRATED CONTROL MODULE .......................................................................................................................... 33

RIMARY LIMIT ................................................................................................................................................ 33

UXILIARY LIMIT ............................................................................................................................................... 33

OLLOUT LIMIT ................................................................................................................................................ 33

RESSURE SWITCHES ........................................................................................................................................ 33

LAME SENSOR ............................................................................................................................................... 33

XVIII. T roubleshooting...................................................................................................................................................... 33

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................................................................................................. 33

IAGNOSTIC CHART .......................................................................................................................................... 34

ESETTING FROM LOCKOUT ............................................................................................................................... 34

XIX. Maintenance ............................................................................................................................................................. 34

ANNUAL INSPECTION .......................................................................................................................................... 34

ILTERS .......................................................................................................................................................... 34

URNERS ....................................................................................................................................................... 34

NDUCED DRAFT AND CIRCULATOR BLOWERS ......................................................................................................... 34

ONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER ONLY)...................................................................... 35

LAME SENSOR (QUALIFIED SERVICER ONLY) ...................................................................................................... 35

LUE PASSAGES (QUALIFIED SERVICER ONLY)..................................................................................................... 35

XX. Internal Filter Removal ............................................................................................................................................. 35

XXI. Before Leaving an Installation ................................................................................................................................ 35

XXII. Repair & Replacement Parts .................................................................................................................................. 35

APPENDIX

Troubleshooting Chart...................................................................................................................................................... 37

Wiring Diagram ................................................................................................................................................................ 39

WARNING

F THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A

FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.

–

O NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. –

WHAT TO DO IF YOU SMELL GAS

•

• PHONE IN YOUR BUILDING.

• PHONE.

• DEPARTMENT.

NSTALL ATION AND SE RVICE MUST BE PER FORM ED BY A QUALI FIED INS TALLE R,

– SERVICE AGENCY OR THE GAS SUPPLIER.

O NOT TRY TO LIGHT ANY APPLIANCE.

O NOT TOUCH ANY ELECTRICAL SWITCH; DO NOT USE ANY

MMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’S

OLLOW THE GAS SUPPLIER’S INSTRUCTIONS.

F YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE

WARNING

HOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF, TURN

OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THE FURNACE BEFORE TURNING OFF THE ELECTRICAL SUPPLY.

TO THE OWNER

It is important that you fill out the owner’s registration card and mail it today. This will assist us in contacting you should any service or warranty information change in the future. When filling in the registration card, be sure to include the model, manufacturing, and serial numbers, plus the installation date. Your warranty certificate is also supplied with the unit. Read the warranty carefully and note what is covered. Keep the warranty certificate in a safe location for future reference. If additional information or operating instructions are required, contact the dealer where the purchase was made.

Homeowner Notice: If the residence is left unattended for an extended period of time

(i.e., 4 hours or greater), have your heating system periodically checked to ensure proper operation. Potential circumstances beyond our control such as power outages, gas service interruptions, product installation, or component failures could result in heating system operational problems.

TO THE INSTALLER

Before installing this unit, please read this manual thoroughly to familiarize yourself with specific items which must be adhered to, including but not limited to: unit maximum external static pressure, gas pressures, BTU input rating, proper electrical connections, circulating air temperature rise, minimum or maximum CFM, and motor speed connections.

CARBON MONOXIDE POISONING HAZARD

Special Warning for Installation of Furnace or Air Handling Units in Enclosed Areas such as Garages, Utility Rooms o r Parking Areas

Carbon monoxide producing devices (su ch as an automobile, space heater, gas water heater, etc.) should not be operated in enclosed areas such as unventilated garages, utility rooms or parking areas because of the danger of carbon monoxide (CO) poisoning resulting from the exhaust emissions. If a fu rnace or air handler is installed in an enclosed area such as a garage, utility room or parking area an d a carbon monoxide producing device is operated therein, there must be adequate, direct outsid e ventilation.

This ventilation is necessary to avoid the danger of CO poisoning which can occur if a carbon monoxide producing device continues to operate in the enclosed area. Carbon monoxide emissions can be (re)circulated throughout the structure if the furnace or air handler is operating in any mode.

CO can cause serious illness including permanent brain damage or death.

B10259-216

TRANSPORTATION DAMAGE

All units are securely packed in shipping containers tested according to International Safe Transit Association specifications. The carton must be checked upon arrival for external damage. If damage is found, a request for inspection by carrier’s agent must be made in writing immediately. The furnace must be carefully inspected on arrival for damage and bolts or screws which may have come loose in transit. In the event of damage the consignee should:

1. Make a notation on delivery receipt of any visible damage to shipment or container.

2. Notify carrier promptly and request an inspection.

3. With concealed damage, carrier must be notified as soon as possible - preferably within five days.

4. File the claim with the following support documents within a nine month statute of limitations.

• Original or certified copy of the Bill of Lading, or indemnity

bond.

• Original paid freight bill or indemnity in lieu thereof.

• Original or certified copy of the invoice, showing trade and

other discounts or reductions.

• Copy of the inspection report issued by carrier’s

representative at the time damage is reported to carrier.

The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim. The distributor or manufacturer will not accept claims from dealers for transportation damage.

Keep this literature in a safe place for future reference.

I. COI. CO

I. CO

I. COI. CO

MPOMPO

MPO

MPOMPO

NENT IDNENT ID

NENT ID

NENT IDNENT ID

ENTIFIENTIFI

ENTIFI

ENTIFIENTIFI

TITI

BLOWER COMPARTMENT BURNER COMPARTMENT

9 10

CFM

87 4321

OFF

CUT FOR

DEHUM

87 4321

1211

987

123

Intell-Ignition

TWO

TSTAT

SINGLE

3 2 1

OFF

USC

12 21

BURNER COMPARTMENT BLOWER COMPARTMENT

Upflow/Horizontal

1 Two-Stage Gas Valve 2 Gas Line Entrance (Alternate) 3 Pressure Switch(es) 4 Gas Manifold 5 Combustion Air Intake Connection 6 Hot Surface Igniter 7 Rollout Limit 8 Burners 9 Flame Sensor 10 Flue Pipe Connection 11 Flue Pipe 12 Combustion Air Intake (Alternate) 13 Primary Limit 14 Gas Line Entrance 15 Flue Pipe Connection (Alternate) 16 Rubber Elbow 17 Two-Speed Induced Draft Blower 18 Electrical Connection Inlets (Alternate) 19 Coil Front Cover Pressure Tap 20 Coil Front Cover Drain Port 21 Drain Line Penetrations

Counterflow/Horizontal

22 Drain Trap 23 Blower Door Interlock Switch 24 Inductor (Not All Models) 25 Two-Stage Integrated Control Module

(with fuse and diagnostic LED) 26 24 Volt Thermostat Connections 27 Transformer (40 VA) 28 ECM Variable Speed Circulator Blower 29 Auxiliary Limit 30 Junction Box 31 Electrical Connection Inlets 32 Coil Front Cover 33 Combustion Air Inlet Pipe

II. SAFETYII. SAFETY

II. SAFETY

II. SAFETYII. SAFETY

Please adhere to the following warnings and cautions when installing, adjusting, altering, servicing, or operating the furnace.

WARNING

O PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION,

ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE, REFER TO THIS MANUAL. QUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.

OR ADDITIONAL ASSISTANCE OR INFORMATION, CONSULT A

WARNING

HIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALS WHICH

MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH ARE KNOWN TO THE

TATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER

REPRODUCTIVE HARM.

WARNING

O PREVENT POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH

DUE TO ELECTRICAL SHOCK, THE FURNACE MUST BE LOCATED TO PROTECT THE ELECTR ICAL COMPO NENTS FROM WA TER.

WARNING

EATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE, ROUTINE,

INSPECTION, MAINTENANCE AND SUPERVISION. SUCH DEVICE IS LOCATED WILL BE VACANT, CARE SHOULD BE TAKEN THAT SUCH DEVICE IS ROUTINELY INSPECTED, MAINTAINED AND MONITORED. IN THE EVENT THAT THE BUILDING MAYBE EXPOSED TO FREEZING TEMPERATURES AND WILL BE VACANT, ALL WATER-BEARING PIPES SHOULD BE DRAINED, THE BUILDING SHOULD BE PROPERLY WINTERIZED, AND THE WATER SO URCE CLOSED. I N THE EVENT T HAT THE BUI LDING MAY BE EX POSED TO FREEZ ING TEMPERATURES AND WILL BE VACANT, ANY HYDRONIC COIL UNITS SHOULD BE DRAINED AS WELL AND, IN SUCH CASE, ALTERNATIVE HEAT SOURCES SHOULD BE UTI LIZED.

F THE BUILIDNG IN WHICH ANY

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

NOTE: Discharge static electrictiy accumulated in the body before

touching the unit. An electrostatic discharge can adversely affect electrical components. Use the following precautions during furnace installation and servicing to protect the integrated control module from damage. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid exposing the integrated control module to electrostatic discharge. This procedure is applicable to both installed and non-installed (ungrounded) furnaces.

1. Disconnect all power to the furnace. Do not touch the integrated control module or any wire connected to the control prior to discharging your body’s electrostatic charge to ground.

2. Firmly touch a clean, unpainted, metal surface of the furnace near the control. Any tools held in a person’s hand during grounding will be discharged.

3. Service integrated control module or connecting wiring following the discharge process in step 2. Use caution not to recharge your body with static electricity; (i.e., do not move or shuffle your feet, do not touch ungrounded objects, etc.).

If you come in contact with an ungrounded object, repeat step 2 before touching control or wires.

4. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a furnace. Return any old or new controls to their containers before touching any ungrounded object.

III. PRIII. PR

III. PR

III. PRIII. PR

DUCDUC

DUC

DUCDUC

T APPLIT APPLI

T APPLI

T APPLIT APPLI

TITI

This furnace is primarily designed for residential home-heating applications. It is NOT designed or certified for use in mobile homes, trailers or recreational vehicles. This unit is NOT designed or certified for outdoor applications. The furnace must be installed indoors (i.e., attic space, crawl space, or garage area provided the garage area is enclosed with an operating door). This furnace can be used in the following non-industrial commercial applications:

Schools, Office buildings, Churches, Retail stores Nursing homes, Hotels/motels, Common or office areas

In such applications , the furnace must be installed with the following stipulations:

• It must be installed per the installation instructions provided and per local and national codes.

• It must be installed indoors in a building constructed on site.

• It must be part of a ducted system and not used in a free air delivery application.

• It must not be used as a “make-up” air unit.

• It must be installed with two-pipe systems for combustion air, especially if VOC’s or other contaminants are present in the conditioned space.

• All other warranty exclusions and restrictions apply This furnace is an ETL dual-certified appliance and is appropriate for use with natural or propane gas (NOTE: If using propane, a propane conversion kit is required).

Dual certification means that the combustion air inlet pipe is optional and the furnace can be vented as a:

Non-direct vent (single pipe) central forced air furnace in which combustion air is taken from the installation area or from air ducted from the outside or,

Direct vent (dual pipe) central forced air furnace in which all combustion air supplied directly to the furnace burners through a special air intake system outlined in these instructions.

This furnace may be used as a construction site heater ONLY if the following conditions are met:

• The vent system is permanently installed per these installation instructions.

• A room thermostat is used to control the furnace. Fixed jumpers that provide continuous heating CANNOT be used.

• Return air ducts are provided and sealed to the furnace.

• A return air temperature range between 60ºF (16ºC) and 80ºF (27ºC) is maintained.

• Air filters are installed in the system and maintained during construction, replaced as appropriate during construction, and upon completion of construction are replaced.

• The input rate and temperature rise are set per the furnace rating plate.

• 100% outside air is provided for combustion air requirements during construction. Temporary ducting can be used.

NOTE: Do not connect the temporary duct directly to the furnace. The duct must be sized according to the instructions under Section V, Combustion and Ventilation

Air Requirements, Section 5.3.3.

• The furnace heat exchanger, components, duct system,

air filters and evaporator coils are thoroughly cleaned following final construction clean up.

• All furnace operating conditions (including ignition, input rate, temperature rise and venting) are verified according to these installation instructions.

NOTE: The Commonwealth of Massachusetts requires that the following additional requirements must also be met:

• Gas furnaces must be installed by a licensed plumber or gas fitter.

• A T-handle gas cock must be used.

• If the unit is to be installed in an attic, the passageway to and the service area around the unit must have flooring.

To ensure proper installation and operation, thoroughly read this manual for specifics pertaining to the installation and application of this product.

WARNING

OSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,

EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION, OR MAINTENANCE OF THIS PRODUCT.

WARNING

O PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,

DO NOT INSTALL THIS FURNACE IN A MOBILE HOME, TRAILER, OR RECREATIONAL VEHICLE.

To ensure proper furnace operation, install, operate and maintain the furnace in accordance with these installation and operation instructions, all local building codes and ordinances. In their absence, follow the latest edition of the National Fuel Gas Code (NFPA 54/ANSI Z223.1), and/or CAN/CSA B149 Installation Codes, local plumbing or waste water codes, and other applicable codes. A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1) can be obtained from any of the following:

American National Standards Institute 1430 Broadway New York, NY 10018

National Fire Protection Association 1 Batterymarch Park Quincy , MA 02269

CSA International 8501 East Pleasant Valley Cleveland, OH 44131

A copy of the CAN/CSA B149 Installation Codes can also be obtained from:

CSA International 178 Rexdale Boulevard Etobicoke, Ontario, Canada M9W 1R3

The rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated. The total heat loss should be calculated by an approved method or in accordance with “ASHRAE Guide” or “Manual J-Load Calculations” published by the Air Conditioning Contractors of America.

IVIV

. LOC. LOC

TITI

IVIV

. LOC

. LOC. LOC

N REQUIREMENTS & CON REQUIREMENTS & CO

N REQUIREMENTS & CO

TITI

N REQUIREMENTS & CON REQUIREMENTS & CO

NSIDNSID

NSID

NSIDNSID

ERAERA

ERA

ERAERA

TITI

NSNS

GENERAL

WARNING

O PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL

INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THE UNIT.

Follow the instructions listed below when selecting a furnace location. Refer also to the guidelines provided in Section V, Combus-

tion and Ventilation Air Requirements.

• Centrally locate the furnace with respect to the proposed or existing air distribution system.

• Ensure the temperature of the return air entering the furnace is between 55°F and 100°F when the furnace is heating.

• Provide provisions for venting combustion products outdoors through a proper venting system. Special consideration should be given to vent/flue pipe routing and combustion air intake pipe when applicable. Refer to Section IX, Vent/Flue Pipe and Combustion Air Pipe - Termination Locations for appropriate termination locations and to determine if the piping system from furnace to termination can be accomplished within the guidelines given. NOTE: The length of flue and/or combustion air piping can be a limiting factor in the location of the furnace.

• Locate the furnace so condensate flows downwards to the drain. Do not locate the furnace or its condensate drainage system in any area subject to below freezing temperatures without proper freeze protection. Refer to Section X, Condensate Drain Lines and Trap for further details.

• Ensure adequate combustion air is available for the furnace. Improper or insufficient combustion air can expose building occupants to gas combustion products that could include carbon monoxide. Refer to Section V,

Combustion and Ventilation Air Requirements.

• Set the furnace on a level floor to enable proper condensate drainage. If the floor becomes wet or damp at times, place the furnace above the floor on a concrete base sized approximately 1-1/2" larger than the base of the furnace. Refer to the Section VII, Horizontal Applications and Considerations for leveling of horizontal furnaces.

• Ensure upflow or horizontal furnaces are not installed directly on carpeting, or any other combustible material. The only combustible material allowed is wood.

• A special accessory subbase must be used for upright counterflow unit installations over any combustible material (including wood). Refer to subbase instructions for installation details. (NOTE: A subbase will not be required if an air conditioning coil is located beneath the furnace between the supply air opening and the combustible floor.

• Exposure to contaminated combustion air will result in safety and performance-related problems. Do not install the furnace where the combustion air is exposed to the following substances:

chlorinated waxes or cleaners chlorine-based swimming pool chemicals water softening chemicals deicing salts or chemicals carbon tetrachloride

halogen type refrigerants cleaning solutions (such as perchloroethylene) printing inks paint removers varnishes hydrochloric acid cements and glues antistatic fabric softeners for clothes dryers and masonry acid washing materials

• Seal off a non-direct vent furnace if it is installed near an area frequently contaminated by any of the above substances. This protects the non-direct vent furnace from airborne contaminants. To ensure that the enclosed non-direct vent furnace has an adequate supply of combustion air, vent from a nearby uncontaminated room or from outdoors. Refer to the Section V, Combustion and Ventilation Air Requirements for details.

• If the furnace is used in connection with a cooling unit, install the furnace upstream or in parallel with the cooling unit. Premature heat exchanger failure will result if the cooling unit is placed ahead of the furnace.

• If the furnace is installed in a residential garage, position the furnace so that the burners and ignition source are located not less than 18 inches (457 mm) above the floor. Protect the furnace from physical damage by vehicles.

• If the furnace is installed horizontally, the furnace access doors must be vertical so that the burners fire horizontally into the heat exchanger. Do not install the unit with the access doors on the “up/top” or “down/bottom” side of the furnace.

CLEARANCES AND ACCESSIBILITY

Installations must adhere to the clearances to combustible materials which this furnace has been design certified to. The minimum clearance information for this furnace is provided on the unit’s clearance label. These clearances must be permanently maintained. Clearances must also accommodate an installation’s gas, electrical, and drain trap and drain line connections. If the alternate combustion air intake or vent/flue connections are used additional clearance must be provided to accommodate these connections. Refer to Section IX, Vent Flue Pipe and Combustion Air Pipe for details. NOTE: In addition to the required clearances to combustible materials, a minimum of 24 inches service clearance must be available in front of the unit.

TOP

SIDE SIDE SIDE

BOTTOM

Upflow Counterflow Horizontal

A furnace installed in a confined space (i.e., a closet or utility room) must have two ventilation openings with a total minimum free area of 0.25 square inches per 1,000 BTU/hr of furnace input rating. Refer to Product Data Book applicable to your model* for minimum clearances to combustible surfaces. One of the ventilation openings must be within 12 inches of the top; the other opening must be within 12 inches of the bottom of the confined space. In a typical

construction, the clearance between the door and door frame is usually adequate to satisfy this ventilation requirement.

FURNACE SUSPENSION

If suspending the furnace from rafters or joists, use 3/8" threaded rod and 2”x2”x1/8” angle iron as shown below. The length of rod will depend on the application and the clearances necessary.

PROVIDE 8" MINMUM CLEARANCE BETWEEN

CENTER ROD AND FURNACE CABINET

TO ALLOW FOR CIRCULATOR BLOWER REMOVAL

3/8" DIAMETER

THREADED ROD

(6 PLACES)

HOLD DOWN

NUTS

SUPPORT

NUTS

2"X2"X1/8" ANGLE IRON

(3 PLACES)

POSITION AS CLOSE AS POSSIBLE TO BLOWER DECK TO ALLOW FOR

CIRCULATOR BLOWER REMVOAL

ASSURE FURNAC E IS LEVEL F ROM

END TO END AND HAS A SLIGHT

FORWARD TILT WIT H THE FRONT

OF THE FURNACE 0"-3/4"

BELOW THE BACK OF THE FURNAC E

TILT OUTWARD TO ALLOW FOR

DOOR AND CIRCULATOR BLOWER

REMOVAL

Suspended Furnace

EXISTING FURNACE REMOVAL

NOTE: When an existing furnace is removed from a venting system

serving other appliances, the venting system may be too large to properly vent the remaining attached appliances.

The following vent testing procedure is reproduced from the American National Standard/National Standard of Canada for Gas-Fired Central Furnaces ANSI Z21.47b-2002, CSA-2.3b-2002 Section 1.23.1.

The following steps shall be followed with each appliance connected to the

venting system placed in operation, while any other appliances connected to the venting system are not in operation:

a. Seal any unused openings in the venting system; b. Inspect the venting system for proper size and horizontal pitch, as

required by the National Fuel Gas Code, ANSI Z223.1 or the CSA B149 Installation Codes and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition;

c. In so 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. 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 shall operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers;

d. Follow the lighting instructions. Place the appliance being inspected

in operation. Adjust thermostat so appliance shall operate continuously;

e. T est for draft hood equipped spillage at the draft hood relief opening

after 5 minutes of main burner operation. Use the flame of a match or candle;

f. 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 burning appliance to their previous conditions of use;

g. If improper venting is observed during any of the above tests, the

common venting system must be corrected.

*NOTE: Please contact your distributor or our website for the applicable

product data book referred to in this manual.

Corrections must be in accordance with the latest edition of the National Fuel Gas Code NFPA 54/ANSI Z223.1 and/or CSA B149 Installation Codes. If resizing is required on any portion of the venting system, use the appropriate table in Appendix G in the latest edition of the National Fuel Gas Code ANSI Z223.1 and/or CSA B149 Installation Codes.

THERMOSTAT LOCATION

The thermostat should be placed approximately five feet fom the floor on a vibration-free, inside wall in an area having good air circulation. Do not install the thermostat where it may be influenced by any of the following:

• Drafts, or dead spots behind doors, in corners, or under

cabinets.

• Hot or cold air from registers.

• Radiant heat from the sun.

• Light fixtures or other appliances.

• Radiant heat from a fireplace.

• Concealed hot or cold water pipes, or chimneys.

• Unconditioned areas behind the thermostat, such as an

outside wall.

DRAFTS OR DEAD SPOTS

-BEHIND DOORS

-IN CORNERS

-UNDER CABINETS

Thermostat Influences

Consult the instructions packaged with the thermostat for mounting instructions and further precautions.

. CO. CO

. CO

. CO. CO

MBUSTIMBUSTI

MBUSTI

MBUSTIMBUSTI

N & VENTILN & VENTIL

N & VENTIL

N & VENTILN & VENTIL

TITI

N AIR REQUIREMENTSN AIR REQUIREMENTS

N AIR REQUIREMENTS

TITI

N AIR REQUIREMENTSN AIR REQUIREMENTS

WARNING

OSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH MAY OCCUR

IF THE FURNACE IS NOT PROVIDED WITH ENOUGH FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF FLUE GASES. MOST HOMES REQUIRE OUTSIDE AIR BE SUPPLIED TO THE FURNACE AREA.

Improved construction and additional insulation in buildings have reduced heat loss by reducing air infiltration and escape around doors and windows. These changes have helped in reducing heating/cooling costs but have created a problem supplying combustion and ventilation air for gas fired and other fuel burning appliances. Appliances that pull air out of the house (clothes dryers, exhaust fans, fireplaces, etc.) increase the problem by starving appliances for air. House depressurization can cause back drafting or improper combustion of gas-fired appliances, thereby exposing building occupants to gas combustion products that could include carbon monoxide. If this furnace is to be installed in the same space with other gas appliances, such as a water heater, ensure there is an adequate supply of combustion and ventilation air for the other appliances. Refer to the latest edition of the National Fuel Gas Code NFPA 54/

HOT

COLD

ANSI Z223.1 (Section 5.3), or CSA B149 Installation Codes (Sections 7.2, 7.3, or 7.4), or applicable provisions of the local building codes for determining the combustion air requirements for the appliances. Most homes will require outside air be supplied to the furnace area by means of ventilation grilles or ducts connecting directly to the outdoors or spaces open to the outdoors such as attics or crawl spaces.

The following information on air for combustion and ventilation is reproduced from the National Fuel Gas Code NFP A 54/ANSI Z223.1 Section

5.3.

5.3.1 General:

(a) The provisions of 5.3 apply to gas utilization equipment installed in

buildings and which require air for combustion, ventilation and dilution of flue gases from within the building. They do not apply to (1) direct vent equipment which is constructed and installed so that all air combustion is obtained from the outside atmosphere and all flue gases are discharged to the outside atmosphere, or (2) enclosed furnaces which incorporate an integral total enclosure and use only outside air for combustion and dilution of flue gases.

(b) Equipment shall be installed in a location in which the facilities for

ventilation permit satisfactory combustion of gas, proper venting and the maintenance of ambient temperature at safe limits under normal conditions of use. Equipment shall be located so as not to interfere with proper circulation of air. When normal infiltration does not provide the necessary air, outside air shall be introduced.

vided as required for: cooling of equipment or material, controlling dew point, heating, drying, oxidation or dilution, safety exhaust, odor control, and air for compressors.

(d) In addition to air needed for combustion, air shall be supplied for

ventilation, including all air required for comfort and proper working conditions for personnel.

(e) While all forms of building construction cannot be covered in detail,

air for combustion, ventilation and dilution of flue gases for gas utilization equipment vented by natural draft normally may be obtained by application of one of the methods covered in 5.3.3 and

5.3.4.

(f) Air requirements for the operation of exhaust fans, kitchen ventila-

tion systems, clothes dryers, and fireplaces shall be considered in determining the adequacy of a space to provide combustion air requirements.

5.3.2 Equipment Located in Unconfined Spaces:

In unconfined spaces (see definition below) in buildings, infiltration may

be adequate to provide air for combustion ventilation and dilution of flue gases. However, in buildings of tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier, etc.), additional air may need to be provided using the methods described in 5.3.3b or 5.3.4.

Space, Unconfined.

For purposes of this Code, a space whose volume is not less than 50

cubic feet per 1,000 BTU per hour of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors, are considered a part of the unconfined space.

5.3.3 Equipment Located in Confined Spaces:

(a) All Air from Inside the Building: The confined space shall be pro-

vided with two permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space. The total input of all gas utilization equipment installed in the combined space shall be considered in making this determination. Each opening shall have a minimum free area of 1 square inch per 1,000 BTU

per hour of the total input rating of all gas utilization equipment in

the confined space, but not less than 100 square inches. One opening shall be within 12 inches of the top and one within 12 inches of the bottom of the enclosure.

NOTE: Each opening must have a free area of not less than one square inch per 1000 BTU of the total input rating of all equ ipment in the enclosure, but not less than 100 square inches.

Equipment Located in Confined Spaces; All Air from Inside

Building. See 5.3.3-a.

Chimney or Gas Vent

Water Heater

Furnace

(b) All Air from Outdoors: The confined space shall be provided with

two permanent openings, one commencing within 12 inches of the top and one commencing within 12 inches of the bottom of the enclosure. The openings shall communicate directly, or by ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.

1. When directly communicating with the outdoors, each opening shall have a minimum free area of 1 square inch per 4,000 BTU per hour of total input rating of all equipment in the enclosure.

Chimney or Gas Vent

Ventila t ion l ouv er s (each end of attic)

NOTE: The inlet and outlet air opening s must each have a free area of not less than one square inch per 4000 BTU of the total input rating of all equipment in the enclo sure.

Outlet Air

Water Heater

lternate

air inlet

Furnace

Inlet Air

Opening

Chimney or Gas Vent

Ventilation louvers (each end of attic)

NOTE: The inlet and outlet air openings must eac h have a free area of not less than one square inch per 4000 BTU o f the total input rating of all equipment in the enclosure.

Outlet Air

Furnace

Water Heater

Inlet air duct [ends 1 ft (300 mm) above floor]

Equipment Located in Confined Spaces; All Air from Outdoors

Through Ventilated Attic. See 5.3.3-b.

3. When communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 square inch per 2,000 BTU per hour of total input rating of all equipment in the enclosure.

Chimney or Gas Vent

NOTE: The air duct openings must have a free area of not less than one square inch per 2000 BTU of the total input rating of all equipment in the

Outlet air duct

Water Heater

Furnace

Inlet air duct

*If the appliance room is located against an outside wall and the air openings communicate directly with the outdoors, each opening shall have a free area of not less than one square inch per 4,000 BTU per hour of the total input rating of all appliances in the enclosure.

Equipment Located in Confined Spaces; All Air from Outdoors.

See 5.3.3-b.

enclosure*.

4. When ducts are used, they shall be of the same cross-sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall not be less than 3 inches.

Ventila t ion l ouv er s for unheated crawl space

Equipment Located in Confined Spaces; All Air from Outdoors—

Inlet Air from Ventilated Crawl Space and Outlet Air to Ventilated

Attic. See 5.3.3-b

NOTE: The single opening must have a free area of not less than one square inch per 3000 BTU of the total input rating of all equipment in the enclosure, but not less than the sum of the areas of all vent connectors in the confined space.

Chimney or Gas Vent

2. When communicating with the outdoors through vertical ducts, each opening shall have a minimum free area of 1 square inch per 4,000 BTU per hour of total input rating of all equipment in the

Opening

enclosure.

Water

Furnace

Equipment Located in Confined Spaces; All Air from Outdoors -

Single Air Opening. See 5.3.3-b.

Heater

Alternate Opening Location

5. When directly communicating with the outdoors, the single opening shall have a minimum free area of 1 square inch per 3,000 BTU per hour of total input rating of all equipment in the enclosure.

5.3.4 Specially Engineered Installations:

The requirements of 5.3.3 shall not necessarily govern when special engi-

neering, approved by the authority having jurisdiction, provides an adequate supply of air for combustion, ventilation, and dilution of flue gases.

5.3.5 Louvers and Grilles:

In calculating free area in 5.3.3, consideration shall be given to the blocking

effect of louvers, grilles or screens protecting openings. Screens used shall not be smaller than 1/4 inch mesh. If the area through a design of louver or grille is known, it should be used in calculating the size of opening required to provide the free area specified. If the design and free area is not known, it may be assumed that wood louvers will have 20-25 percent free area and metal louvers and grilles will have 60-75 percent free area. Louvers and grilles shall be fixed in the open position or interlocked with the equipment so that they are opened automatically during equipment operation.

5.3.6 Special Conditions Created by Mechanical Exhausting or Fireplaces:

Operation of exhaust fans, ventilation systems, clothes dryers, or fireplaces

may create conditions requiring special attention to avoid unsatisfactory operation of installed gas utilization equipment. Air from Inside Building. See 5.3.3-a.

VI. INSTVI. INST

VI. INST

VI. INSTVI. INST

ALLALL

ALL

ALLALL

TITI

N POSITIN POSITI

N POSITI

N POSITIN POSITI

NSNS

This furnace may be installed in an upright position or horizontal on either the left or right side panel. Do not install this furnace on its back. For upright upflow furnaces, return air ductwork may be attached to the side panel(s) and/or basepan. For horizontal up- flow furnaces, return air ductwork must be attached to the basepan. For both upright or horizontal counterflow furnaces, return duct- work must be attached to the basepan (top end of the blower compartment). NOTE: Ductwork must never be attached to the back of the furnace. Contact your distributor for proper airflow requirements and number of required ductwork connections. Refer to “Recommended Installation Positions” figure for appropriate installation positions, ductwork connections, and resulting airflow arrangements.

VII. HOVII. HO

VII. HO

VII. HOVII. HO

RIZORIZO

RIZO

RIZORIZO

NTNT

AL APPLIAL APPLI

AL APPLI

NTNT

AL APPLIAL APPLI

TITI

NS & CONS & CO

NS & CO

NS & CONS & CO

NSIDNSID

NSID

NSIDNSID

ERAERA

ERA

ERAERA

TITI

NSNS

GENERAL

Horizontal applications, in particular, may dictate many of the installation’s specifics such as airflow direction, ductwork connections, flue and combustion air pipe connections, etc. The basic application of this furnace as a horizontal furnace differs only slightly from an upright installation. When installing a furnace horizontally, additional consideration must be given to the following:

FURNA CE MUST B E LEVEL

ALTERNA TE VENT/FLUE AND COMBUS TION AI R INTAKE LOCATIO NS

GAS LINE W ITH DRIP LEG (3" MINI MUM)

DRAIN PAN

FURNA CE MUST B E SUPPOR TED AT BOTH ENDS AND MIDDLE

FROM END TO END

4 3/4" MINIMUM DRAIN TRAP CLEARANCE

DRAIN LINE WITH 1/4" PER FOOT DOWNWARD SLOPE

MINIMUM

SERVICE

24"

CLEARANCE REQUIRED

FURNACE MUST BE LEVEL OR SLIGHTLY TILTED FORWARD WITH THE DOORS 0" - 3/4" BELOW THE BACK PA NEL

Horizontal Furnace

DRAIN TRAP AND LINES

In horizontal applications the condensate drain trap is secured to the furnace side panel, suspending it below the furnace. A minimum clearance of 4 3/4 inches below the furnace must be provided for the drain trap. Additionally, the appropriate downward piping slope must be maintained from the drain trap to the drain location. Refer to Section X, Condensate Drain Trap and Lines for further details. If the drain trap and drain line will be exposed to temperatures near or below freezing, adequate measures must be taken to prevent condensate from freezing.

LEVELING

Leveling ensures proper condensate drainage from the heat exchanger and induced draft blower. For proper flue pipe drainage, the furnace must be level lengthwise from end to end. The furnace should also be level from back to front or have a slight tilt with the access doors downhill (approximately 3/4 inches) from the back panel. The slight tilt allows the heat exchanger condensate, generated in the recuperator coil, to flow forward to the recuperator coil front cover.

ALTERNATE VENT/FLUE AND COMBUSTION AIR CONNECTIONS

In horizontal installations provisions for alternate flue and combustion air piping are available for upflow furnaces with left discharge and counterflow furnaces with right air discharge. This configuration allows the flue and combustion air piping to be run vertically through the furnace. Refer to the “Recommended Installation Positions” figure for further detail. The standard piping connections may also be used in these positions. Refer to Section IX, Vent/Flue Pipe and Combustion Air Pipe for details concerning the conversion to the alternate vent/flue and combustion air connections.

AIR

NOTE

tified to 4500 feet

DISCHARGE

Side

Return

Duct

Connection

AIR

DISCHARGE

UPFLOW HORIZONTAL

LEFT AIR DIS CHARGE

Bottom Return

Duct

Connection

UPFLOW HORIZ ONT AL

RIGHT AIR DISCHARGE

Bottom Return

Duct

Connection

UPFLOW UPRIGHT

ALTERNATE FLUE AND COMBUSTION AIR PIPE LOCATIONS

Side

Return

Duct

Connection

Bottom Return

Duct

Connection

AIR

DISCHARGE

Recommended Installation Positions

NOTE: Alternate “vertical” piping connections can not be used when

an upflow furnace is installed with supply air discharging to the right, or when a counterflow furnace is installed with supply air discharging to the left. In either case, use the standard flue and combustion air piping connections.

ALTERNATE ELECTRICAL AND GAS LINE CONNECTIONS

This furnace has provisions allowing for electrical and gas line connections through either side panel. In horizontal applications the connections can be made either through the “top” or “bottom” of the furnace.

DRAIN PAN

A drain pan must be provided if the furnace is installed above a conditioned area. The drain pan must cover the entire area under the furnace (and air conditioning coil if applicable).

FREEZE PROTECTION

Refer to Section VI, Horizontal Applications and Conditions - Drain Trap and Lines.

FURNACE SUSPENSION

If the furnace is installed in a crawl space it must be suspended from the floor joist or supported by a concrete pad. Never install the furnace on the ground or allow it to be exposed to water. Refer to

Section IV, Location Requirements and Considerations - Furnace Suspension for further details.

VIII. PRVIII. PR

VIII. PR

VIII. PRVIII. PR

ANE GAANE GA

ANE GA

ANE GAANE GA

S /HIS /HI

S /HI

S /HIS /HI

GH ALGH AL

GH AL

GH ALGH AL

TITUDTITUD

TITUD

TITUDTITUD

E INSTE INST

E INST

E INSTE INST

ALLALL

ALL

ALLALL

TITI

NSNS

TITI

NSNS

WARNING

OSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH MAY OCCUR IF

THE CORRECT CONVERSION KITS ARE NOT INSTALLED. MUST BE APPLIED TO INSURE SAFE AND PROPER FURNACE OPERATION. CONVERSIONS MUST BE PERFORMED BY A QUALIFIED INSTALLER OR SERVICE AGENCY.

This furnace is shipped from the factory configured for natural gas at standard altitude. Propane gas installations require an orifice change to compensate for the energy content difference between natural and propane gas.

HE APPROPRIATE KITS

High altitude installations may require both a pressure switch and an orifice change. These changes are necessary to compensate for the natural reduction in the density of both the gas fuel and the combustion air at higher altitude. For installations above 7000 feet, please refer to your distributor for required kit(s).

Gas Altitude Kit

Natural None #43 3.5" w. c. 1.9" w.c . None

Propane

0-7000

LPM -03B

: In Canada, gas furnaces are only cer

Orifice

#55 10 .0" w. c . 6.0" w.c. None

M a n if ol d P ressu re P ressu re

High Stage Low Stage

Swi tch Change

Contact the distributor for a tabular listing of appropriate manufacturer’s kits for propane gas and/or high altitude installations. The indicated kits must be used to insure safe and proper furnace operation. All conversions must be performed by a qualified installer, or service agency.

IX. VENT/FLUE PIPE & COMBUSTION AIR PIPEIX. VENT/FLUE PIPE & COMBUSTION AIR PIPE

IX. VENT/FLUE PIPE & COMBUSTION AIR PIPE

IX. VENT/FLUE PIPE & COMBUSTION AIR PIPEIX. VENT/FLUE PIPE & COMBUSTION AIR PIPE

GENERAL

WARNING

AILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN BODILY INJURY OR

DEATH. SECTION.

AREFULLY READ AND FOLLOW ALL INSTRUCTIONS GIVEN IN THIS

WARNING

PON COMPLETION OF THE FURNACE INSTALLATION, CAREFULLY INSPECT THE

ENTIRE FLUE SYSTEM BOTH INSIDE AND OUTSIDE THE FURNACE TO ASSURE IT IS PROPERLY SEALED. PERSONAL INJURY OR DEATH DUE TO EXPOSURE TO FLUE PRODUCTS, INCLUDING CARBON MONOXIDE.

EAKS IN THE FLUE SYSTEM CAN RESULT IN SERIOUS

A condensing gas furnace achieves its high level of efficiency by extracting almost all of the heat from the products of combustion and cooling them to the point where condensation takes place. Because of the relatively low flue gas temperature and water condensation requirements, PVC pipe is used as venting material. This furnace must not be connected to T ype B, BW , or L vent or vent connector , and must not be vented into any portion of a factory built or masonry chimney except when used as a pathway for PVC as described later in this section. Never common vent this appliance with another appliance or use a vent which is used by a solid fuel appliance. Do not use commercially available “no hub connectors” other than those shipped with this product. It is the responsibility of the installer to follow the manufacturers’ recommendations and to verify that all vent/flue piping and connectors are compatible with furnace flue products. Additionally, it is the responsibility of the installer to ensure that all piping and connections possess adequate structural integrity and support to prevent flue pipe separation, shifting, or sagging during furnace operation.

DUAL CERTIFICATION: NON-DIRECT/DIRECT VENT

This furnace is dual certified and may be installed as a non-direct vent (single pipe) or direct vent (dual pipe) appliance. A non-direct vent installation requires only a vent/flue pipe, while a direct vent installation requires both a vent/flue pipe and a combustion air intake pipe. Refer to the appropriate section for details concerning piping size, length, number of elbows, furnace connections, and terminations.

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