Whirlpool WGFM195, WFD195, WFM195, WFD193 Installation Instructions Manual

GAS-FIRED WARM AIR FURNACE INSTALLATION INSTRUCTIONS

(Type FSP Category IV Direct or Nondirect Vent Air Furnace)

ATTENTION INSTALLATION 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 operations.

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.

ceholder

for Bar Code

Whirlpool Gold® Models WGFM195, WFD195, WFD193, WFM195

WPIO-299N

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

NOTE: Please contact your distributor or our website for applicable Specification Sheet referred to in this manual.

Tradewinds Distributing Company, LLC

14610 Breakers Drive

Jacksonville, Florida 32258

TABLE OF CONTENTS

GAS FURNACE SAFETY PRECAUTIONS....................................3

Electrostatic Discharge (ESD) Precautions..................................4

PRODUCT DESCRIPTION AND APPLICATION ..........................4

Shipping Inspection .....................................................................4

To The Installer.............................................................................4

Important Note to the Owner Regarding Product Warranty .......4

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

Product Application......................................................................5

LOCATION REQUIREMENTS AND CONSIDERATIONS ............6

Clearances and Accessibility.......................................................7

Furnace Suspension ....................................................................8

Existing Furnace Removal ...........................................................8

Thermostat Location ....................................................................8

COMBUSTION AND VENTILATION AIR REQUIREMENTS........8

INSTALLATION POSITIONS.......................................................11

HORIZONTAL APPLICATIONS AND CONSIDERATIONS........11

General .......................................................................................11

Drain Trap and Lines..................................................................11

Leveling ......................................................................................11

Alternate Vent/Flue Connections ...............................................11

Alternate Electrical and Gas Line Connections .........................13

Drain Pan....................................................................................13

Freeze Protection .......................................................................13

Furnace Suspension ..................................................................13

PROPANE GAS/HIGH ALTITUDE INSTALLATIONS.................13

VENT/FLUE PIPE AND COMBUSTION AIR PIPE......................13

General .......................................................................................13

Dual Certification: Nondirect/Direct Vent...................................14

Materials and Joining Methods..................................................14

Proper Vent/Flue and Combustion Air Piping Practices ...........14

Termination Locations................................................................14

Canadian Venting Requirements ...............................................15

Standard Furnace Connections.................................................15

Vent/Flue Pipe............................................................................15

Combustion Air Pipe—Direct Vent Installations........................15

Combustion Air Pipe—Nondirect Vent Installations..................16

Alternate Furnace Connections .................................................16

Alternate Vent/Flue Location......................................................16

Nondirect Vent (Single Pipe) Piping...........................................18

Vent/Flue Pipe Lengths and Diameters.....................................18

Vent/Flue Pipe Terminations......................................................18

Direct Vent (Dual Pipe) Piping....................................................19

Vent/Flue and Combustion Air Pipe Lengths and Diameters....19

Vent/Flue and Combustion Air Pipe Terminations ....................20

Vent/Intake Terminations for Installation of Multiple

Direct Vent Furnaces..................................................................21

Concentric Vent Termination .....................................................22

Side Wall Vent Kit.......................................................................22

CONDENSATE DRAIN LINES AND DRAIN TRAP.....................22

Standard Right or Left Side Drain Hose Connections...............22

Upright Installations—Trap on Right Side .................................22

Upright Installations—Trap on Left Side....................................23

Upright Drain Trap Mounting—Left or Right Side Panel...........24

Horizontal Installations—Right Side Down................................24

Horizontal Installations—Left Side Down ..................................24

Horizontal Drain Trap Mounting—Left or Right Side Panel.......25

ELECTRICAL CONNECTIONS....................................................25

Wiring Harness...........................................................................25

115-Volt Line Connections.........................................................25

Junction Box Relocation............................................................26

24-Volt Thermostat Wiring .........................................................26

WFM19 Furnace with 2-Stage Condenser Field Wiring............26

115-Volt Line Connection of Accessories (Humidifier and

Electronic Air Cleaner)................................................................27

GAS SUPPLY AND PIPING..........................................................28

High Altitude Derate ...................................................................28

Propane Gas Conversion...........................................................28

Gas Control Valve.......................................................................28

Gas Piping Connections ............................................................28

Gas Piping Checks.....................................................................31

Propane Gas Tanks and Piping .................................................31

CIRCULATING AIR AND FILTERS..............................................32

Ductwork—Airflow .....................................................................32

Checking Duct Static .................................................................33

Bottom Return Air Opening—Upflow Models] ..........................33

Filters—Read This Section Before Installing the Return Air

Ductwork ....................................................................................33

START-UP PROCEDURE AND ADJUSTMENT.........................35

Heat Anticipator Setting.............................................................35

Drain Trap Priming......................................................................35

Furnace Operation......................................................................35

Furnace Start-Up........................................................................35

Furnace Shutdown.....................................................................35

Gas Supply Pressure Measurement..........................................35

Gas Manifold Pressure Measurement and Adjustment.............37

Gas Input Rate Measurement—Natural Gas Only.....................37

Temperature Rise.......................................................................37

Circulator Blower Speeds ..........................................................38

NORMAL SEQUENCE OF OPERATION.....................................38

Power Up....................................................................................38

Heating Mode—Mode DIP Switch Set to 1 STG Position.........38

Heating Mode—Mode DIP Switch Set to 2 STG Position.........39

Cooling Mode.............................................................................39

Fan Only Mode...........................................................................39

Operational Checks....................................................................39

SAFETY CIRCUIT DESCRIPTION...............................................40

General .......................................................................................40

Integrated Control Module .........................................................40

Primary Limit Control..................................................................40

Auxiliary Limit Control(s).............................................................40

Rollout Limit Control(s)...............................................................40

Pressure Switches......................................................................40

Flame Sensor..............................................................................40

MAINTENANCE ............................................................................40

Annual Inspection.......................................................................40

Filters ..........................................................................................40

Burners .......................................................................................41

Induced Draft and Circulator Blowers........................................41

Condensate Trap and Drain System (Qualified Servicer Only)..41

Flame Sensor (Qualified Servicer Only)......................................41

Igniter (Qualified Servicer Only)..................................................41

Flue Passages (Qualified Servicer Only) ....................................41

Before Leaving an Installation....................................................42

Repair and Replacement Parts..................................................42

TROUBLESHOOTING ..................................................................42

Electrostatic Discharge (ESD) Precautions................................42

Fault Recall.................................................................................42

Resetting from Lockout..............................................................42

Diagnostic Chart.........................................................................43

BLOWER PERFORMANCE DATA...............................................46

WIRING DIAGRAM—ALL WGFM195 EXCEPT

WGFM195090S5C.........................................................................49

WIRING DIAGRAM—ALL WFD195 AND WGFM195090S5C....50

WIRING DIAGRAM—ALL WFM19...............................................51

ASSISTANCE OR SERVICE.........................................................52

GAS FURNACE SAFETY PRECAUTIONS

Please adhere to the following warnings and cautions when installing, adjusting, altering, servicing or operating the furnace. To en sure proper installation and operation, thoroughly read this manual for specifics pertaining to the installation and application of this product.

Recognize this symbol as a safety precaution.

WARNING

Hazards or unsafe practices could result in property damage, product damage, severe personal injury or death.

Goodman 1

CAUTION

Hazards or unsafe practices may result in property damage, product damage, personal injury or death.

WARNING

The manufacturer will not be responsible for any injury or property damage arising from improper service or service procedures. If you install or perform service on this unit, you assume responsibility for any personal injury or property damage which may result. Many jurisdictions require a license to install or service heating and air conditioning equipment.

Goodman 114

WARNING

This product contains or produces a chemical or chemicals which may cause serious illness or death and which are known to the State of California to cause cancer, birth defects or other reproductive harm.

Goodman 45

WARNING

Heating unit should not be utilized without reasonable, routine inspection, maintenance and supervision. If the building in which any 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 may be exposed to freezing temperatures and will be vacant, all water-bearing pipes should be drained, the building should be properly winterized and the water source closed. In the event that the building may be exposed to freezing temperatures and will be vacant, any hydronic coil units should be drained as well, and, in such case, alternative heat sources should be utilized.

Goodman 47

DANGER

To prevent personal injury or death due to improper installation, adjustment, alteration, refer to this manual. For additional assistance or information, consult a qualified installer, service agency or the gas supplier.

Goodman 44

service

maintenance,

WARNING

If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

— Do not store or use gasoline or other flammable vapors

and liquids in the vicinity of this or any other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

— Installation and service must be performed by a

qualified installer, service agency or the gas supplier.

Goodman 42

CARBON MONOXIDE POISONING HAZARD

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

Carbon monoxide producing devices (such 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 furnace or air handler is installed in an enclosed area such as a garage, utility room or parking area and a carbon monoxide producing device is operated therein, there must be adequate, direct outside 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.

Goodman 38

WARNING

Should 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.

Goodman 43

WARNING

HIGH VOLTAGE!

To avoid property damage, personal injury or death due electrical shock, the furnace must be located so that the electrical components are protected from water damage.

Goodman 120

Electrostatic Discharge (ESD) Precautions

NOTE: Discharge static electricity accumulated in the body before touching the unit. An electrostatic discharge can adversely affect electrical components.

Use the following steps during furnace installations 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 uninstalled (ungrounded) furnaces.

1. Disconnect all power to the furnace. NOTE: 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 away from the control. Any tools held in a person’s hand during grounding will be discharged also.

3. Service the integrated control module or connecting wiring after following the discharge process in Step 2.

NOTE: Do not recharge your body with static electricity by moving or shuffling your feet or touching ungrounded objects. If you touch an ungrounded object, repeat Step 2 before touching the control or wires.

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

PRODUCT DESCRIPTION AND

APPLICATION

Shipping Inspection

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 the delivery receipt of any visible damage

to the shipment or container.

2. Notify the carrier promptly and request an inspection.

3. With concealed damage, the carrier must be notified as soon

as possible—preferably within 5 days.

4. File the claim with the following support documents within a

9-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 the damage and for a thorough investigation of each claim. The distributor or manufacturer will not accept claims from dealers for transportation damage.

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

■ Motor speed connections

Important Note to the Owner Regarding

Product Warranty

Your warranty certificate is supplied as a separate document with the unit installed by your contractor. Read the limited warranty certificate carefully to determine what is and is not covered. Keep the warranty certificate in a safe place. If you are unable to locate the warranty certificate, please contact your installing contractor, or contact customer service at 1-866-944-7575 to obtain a copy.

To receive the Lifetime Heat Exchanger Limited Warranty, good for as long as you own your home, and the 10-Year Parts Limited Warranty, online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec.

Full warranty details and instructions for models currently in production are available at www.whirlpoolhvac.com. If your model is not currently in production or does not appear on the website, please contact your installing contractor or contact customer service at 1-866-944-7575 to obtain a copy of your warranty certificate.

To register your unit, go to www.whirlpoolhvac.com. Click on the manufacturer’s Comfort Commitment the bottom center of the home page. Next, click on the Click Here to Register Your Product link located at the top center of the page, and complete the forms in the manner indicated.

Warranty link located at

WARNING

To prevent property damage, personal injury or death due to fire, do not install the furnace in a mobile home, trailer or recreational vehicle.

Goodman 49

Component Identification

Counterflow/HorizontalUpflow/Horizontal

EFG

Burner Compartment

S T

Blower Compartment

EZ AAJ

AE Q

Blower Compartment

M O

N Q

R S

CUTFOR DEHUM

R S

T M

B A

Burner Compartment

IGHG DF

A. Gas control valve B. Gas line entrance (alternate) C. Pressure switch D. Gas manifold E. Combustion air intake

connection/coupling

F. Hot surface igniter G. Rollout limit switch H. Burners

I. Flame sensor

J. Flue pipe connection/coupling

K. Flue pipe

L. Primary limit switch

M. Gas line entrance

N. Flue pipe connection (alternate) O. Rubber elbow

P. Induced draft blower

Product Application

This furnace is primarily designed for residential home-heating applications.

IMPORTANT:

■ This furnace is not designed or certified for use in mobile

homes, trailers or recreational vehicles.

■ This furnace is not designed or certified for outdoor

applications.

■ The furnace must be installed indoors (for example, 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 nonindustrial commercial applications:

■ Schools

■ Office buildings

■ Churches

■ Retail stores

■ Nursing homes

■ Hotels/motels

■ Common areas

■ Office areas

Q. Electrical connection inlets (alternate) R. Coil front cover pressure tap

S. Coil front cover drain port T. Drain line penetrations

U. Drain trap

V. Blower door interlock switch

W. Ca pacito r

X. 24-volt thermostat connections

Y. Integrated control module (with

fuse and diagnostic LED)

Z. Transformer (40VA) AA. Circulator blower AB. Auxiliary limit switch AC. Junction box AD. Electrical connection inlets AE. Coil front cover

AF. Combustion air inlet pipe

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

■ It must be installed according to the installation instructions

provided and according to 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 “makeup” air unit.

■ It must be installed with 2-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 you are 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:

■ Nondirect 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 a,

■ 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 all of the following conditions are met:

■ The vent system is permanently installed according to these

installation instructions.

■ A room thermostat is used to control the furnace. Fixed

jumpers that provide continuous heating cannot be used and can cause long term equipment damage.

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

■ A return air temperature range between 60ºF and 80ºF (16ºC

and 27ºC) is maintained.

■ Air filters are installed in the system and maintained during

construction, replaced as appropriate during construction and upon completion of construction.

■ The input rate and temperature rise are set according to 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 for adequate combustion and ventilation in accordance with the latest edition of the National Fuel Gas Code NFPA 54/ANSI Z223.1 or CAN/CSA B149.1 Installation Codes.

■ The furnace heat exchanger, components, duct system, air

filters and evaporator coils are thoroughly cleaned following the final construction cleanup.

■ 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

Possible property damage, personal injury or death due to fire, explosion, smoke, soot, condensation, electrical shock or carbon monoxide may result from improper installation, repair, operation or maintenance of this product.

Goodman 48

WARNING

Goodman 49

To prevent property damage, personal injury or death due to fire, do not install the furnace in a mobile home, trailer or recreational vehicle.

To ensure proper furnace operation, you must 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.

LOCATION REQUIREMENTS AND

CONSIDERATIONS

WARNING

To 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 “Combustion and Ventilation Air Requirements.”

■ Centrally locate the furnace with respect to the proposed or

existing air distribution system.

■ Check that the temperature of the return air entering the

furnace is between 55°F and 100°F (13ºC and 38ºC) when the furnace is heating.

■ Provide provisions for venting combustion products outdoors

through a proper venting system. Special consideration should be given to the vent/flue pipe routing and the combustion air intake pipe when applicable. Refer to “Termination Locations” in “Vent/Flue Pipe and Combustion Air Pipe” for appropriate termination locations and to determine if the piping system from the furnace to the 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.

Goodman 50

■ Locate the furnace so that the condensate flows downward

to the drain. NOTE: Do not locate the furnace or its condensate drainage

system in any area subject to below freezing temperatures without the proper freeze protection. Refer to “Condensate Drain Lines and Trap” for further details.

■ Check that 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 “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 1¹⁄₂" (3.8 cm) larger than the base of the furnace. Refer to “Horizontal Applications and Considerations” for leveling of horizontal furnaces.

■ Check that the upflow or horizontal furnaces are not installed

directly on carpeting, or any other combustible material. NOTE: The only combustible material allowed is wood.

■ A special accessory subbase must be used for the 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. NOTE: 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 Var nishes Hydrochloric acid Cements and glues Antistatic fabric softeners for clothes dryers Masonry acid washing materials

■ Seal off a nondirect vent furnace if it is installed near an area

frequently contaminated by any of the above substances. This protects the nondirect vent furnace from airborne contaminants. To ensure that the enclosed nondirect vent furnace has an adequate supply of combustion air, vent from a nearby uncontaminated room or from outdoors. Refer to “Combustion and Ventilation Air Requirements” for details.

■ If the furnace is used in connection with a cooling coil unit,

install the furnace upstream or in parallel with the cooling coil unit. Premature heat exchanger failure will result if the cooling coil 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" (45.7 cm) above the floor. Protect the furnace from physical damage by vehicles.

■ If the furnace is installed horizontally, ensure the furnace

access doors are not on the “up/top” or “down/bottom” side of the furnace. The furnace access doors must be vertical so that the burners fire horizontally into the heat exchanger.

■ Do not connect the furnace to a chimney flue that serves a

separate appliance designed to burn solid fuel.

■ On counterflow installations, the air conditioning coil must be

downstream on the supply (positive) side of the furnace heat exchanger.

Counterflow Installation Over a Noncombustible Floor

■ Before setting the furnace over the plenum opening, ensure

that the surface around the opening is smooth and level. A tight seal should be made between the furnace base and floor by using a silicone rubber caulking compound or cement grout.

Counterflow Installation Over a Combustible Floor

■ If installation over a combustible floor becomes necessary,

use an accessory subbase (see Specification Sheet applicable for your model for details). 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. Follow the instructions with the subbase for proper installation.

NOTES:

■ Do not install the furnace directly on carpeting, tile or

other combustible material other than wood flooring.

■ The subbase will not be required if an air conditioning coil

is installed between the supply air opening on the furnace and the floor.

Clearances and Accessibility

Installations must adhere to the clearances to combustible materials to which this furnace has been design-certified. 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, drain trap and drain line connections. If the alternate vent/flue connection is used, additional clearance must be provided to accommodate these connections. Refer to “Vent/ Flue Pipe and Combustion Air Pipe” for details.

NOTE: In addition to the required clearances to combustible materials, a minimum of 24" (61 cm) service clearance must be available in front of the unit.

Upflow Counterflow Horizontal

A. Top B. Side

C. Bottom

A furnace installed in a confined space (for example, a closet or utility room) must have 2 ventilation openings with a total minimum free area of 0.25 sq. in. per 1,000 Btu/h of furnace input rating. Refer to the Specification Sheet applicable to your model for minimum clearances to combustible surfaces. One of the ventilation openings must be within 12" (30.5 cm) of the top. The other opening must be within 12" (30.5 cm) 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" x 2" x ¹⁄₈" (5.1 cm x 5.1 cm x 3.2 mm) angle iron as shown in “Suspended Furnace” illustration. The length of rod will depend on the application and the clearances necessary.

Suspended Furnace

³⁄₈

" (1 cm) diameter threaded

rod (6)

B. 8" (20.3 cm) minimum clearance

between center rod and furnace cabinet to allow for circulator blower removal.

C. Level furnace end to end, slight

forward tilt with front 0" to (1.9 cm) below back.

³⁄₄

D. Tilt outward to allow for door

and circulator blower removal.

E. Position as close as possible to

blower deck to allow for circulator blower removal.

F. 2" x 2" x

3.2 mm) angle iron (3) G. Support nuts H. Hold down nuts

¹⁄₈

" (5.1 cm x 5.1 cm x

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 Z21.47—latest edition, CSA-2.3 latest edition 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:

1. Seal any unused openings in the venting system.

2. Inspect the venting system for proper size and horizontal

pitch, as required by the National Fuel Gas Code, ANSI Z223.1 or the Natural Gas and Propane Installation Code, CSA B149.1-05 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 shall operate at maximum speed. Do not operate a summer exhaust fan.

6. Follow the lighting instructions. Place the appliance being

inspected in operation. Adjust thermostat so appliance shall operate continuously.

7. Test for spillage from draft hood appliances at the draft hood

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

8. 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.

9. 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 National Gas and Propane Installation Code CSA B149.1-05.

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 National Gas and Propane Installation Code CSA B149.1-05.

Thermostat Location

The thermostat should be placed approximately 5 ft (1.5 m) from the floor on a vibration-free, inside wall in an area having good air circulation.

NOTE: 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

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

COMBUSTION AND VENTILATION

AIR REQUIREMENTS

WARNING

To avoid property damage, personal injury or death, sufficient fresh air for proper combustion and ventilation of flue gases must be supplied. Most homes require outside air be supplied into 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.

Goodman 51

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/ANSI Z223.1 or CAN/CSA B149 Installation Codes or applicable provisions of the local building codes for determining the combustion air requirements for the appliances.

Most homes will require outside air to 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 NFPA 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 for 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.

c) In addition to air needed for combustion, process air shall

be provided 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 the 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 ventilation 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 5.3.3-b or 5.3.4.

Space, Unconfined.

For purposes of this Code, a space whose volume is not less than 50 cu ft per 1,000 Btu/h 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 provided with 2 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 sq. in. (6.5 cm2) per 1,000 Btu/h of the total input rating of all gas utilization equipment in the confined space, but not less than 100 sq. in (645.2 cm2). One opening shall be within 12" (30.5 cm) of the top and one within 12" (30.5 cm) of the bottom of the enclosure.

Equipment Located in Confined Spaces: All Air from Inside Building. See 5.3.3-a.

NOTE: Each opening must have a free area of not less than

1 sq. in. (6.5 cm equipment in the enclosure, but not less than 100 sq. in. (645.2 cm

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

provided with 2 permanent openings, one commencing within 12" (30.5 cm) of the top and one commencing within 12" (30.5 cm) 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

) per 1,000 Btu of the total input rating of all

A. Chimney or gas vent B. Opening(s)

opening shall have a minimum free area of 1 sq. in.

(6.5 cm

) per 4,000 Btu/h of total input rating of all

C. Water heater D. Furnace

equipment in the enclosure.

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 inlet and outlet air openings must each have a free

area of not less than 1 sq. in. (6.5 cm input rating of all equipment in the enclosure.

) per 4,000 Btu of the total

Equipment Located in Confined Spaces: All Air from Outdoors. See 5.3.3-b.

NOTES:

■ The air duct openings must each have a free area of not less

than 1 sq. in. (6.5 cm of all equipment in the enclosure.

■ 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 1 sq. in. (6.5 cm

) per 4,000 Btu/h of the total input rating of all

appliances in the enclosure.

) per 2,000 Btu of the total input rating

A. Chimney or gas vent B. Ventilation louvers

(each end of attic) C. Outlet air D. Inlet air

E. Ventilation louvers for

unheated crawl space

F. Wa te r h ea ter G. Furnace H. Alternate air inlet

2. When communicating with the outdoors through vertical

ducts, each opening shall have a minimum free area of 1 sq. in. (6.5 cm

) per 4,000 Btu/h of total input rating of

all equipment in the enclosure.

Equipment Located in Confined Spaces: All Air from Outdoors Through Ventilated Attic. See 5.3.3-b.

NOTE: The inlet and outlet air openings must each have a free

area of not less than 1 sq. in. (6.5 cm2) per 4,000 Btu of the total input rating of all equipment in the enclosure.

A. Chimney or gas vent B. Outlet air duct C. Inlet air duct

D. Water heater

E. Furnace

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" (7.6 cm).

Equipment Located in Confined Spaces: All Air from Outdoors—Single Air Opening. See 5.3.3-b.

NOTE: The single opening must each have a free area of not less

than 1 sq. in. (6.5 cm equipment in the enclosure, but not less than the sum of the areas of all vent connectors in the confined space.

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

A. Chimney or gas vent B. Ventilation louvers

(each end of attic)

C. Outlet air

D. Inlet air duct (ends 12"

[30.5 cm] above floor) E. Water heater F. Fu r n a c e

3. When communicating with the outdoors through

horizontal ducts, each opening shall have a minimum free area of 1 sq. in. (6.5 cm2) per 2,000 Btu/h of total input rating of all equipment in the enclosure.

A. Chimney or gas vent B. Opening C. Alternate opening location

D. Water heater

E. Furnace

5. When directly communicating with the outdoors, the

single opening shall have a minimum free area of 1 sq. in.

(6.5 cm

) per 3,000 Btu/h 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 engineering, approved by the authority having jurisdiction, provides an adequate supply of air for combustion, ventilation, and dilution of flue gases.

■ Alternate electrical and gas line connections

■ Drain pan

■ Freeze protection

■ Furnace suspension.

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" (6.4 mm) 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 to 25 percent free area and metal louvers and grilles will have 60 to 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.

INSTALLATION POSITIONS

This furnace may be installed in an upright position or horizontal on either the left or right side panel.

NOTE: Do not install this furnace on its back. For upright upflow furnaces, the return air ductwork may be

attached to the side panel(s) and/or base pan. For horizontal upflow furnaces, the return air ductwork must be

attached to the base pan. For both the upright or horizontal counterflow furnaces, the

return air ductwork must be attached to the base pan (top end of the blower compartment).

NOTE: Do not attach the ductwork to the back of the furnace. For upflow installations requiring 1,800 CFM or more, use either 2 side returns or a bottom return or a combination of side and bottom.

Contact your local distributor for the proper airflow requirements and the number of required ductwork connections. See the “Recommended Installation Positions” illustrations for the appropriate installation positions, ductwork connections and the resulting airflow

HORIZONTAL APPLICATIONS

AND CONSIDERATIONS

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:

■ Drain trap and lines

■ Leveling the furnace

■ Alternate vent/flue and combustion air connections

Horizontal Furnace

A. Alternate vent/flue location B. Level end-to-end

C. Level side-to-side or slightly

tilted—doors 0" to below back panel

¹⁄₄

D. Drain line—

foot downward slope

" (6.4 mm) per

³⁄₄

" (1.9 cm)

E. 36" (91.4 cm) minimum service

clearance

F. 4

³⁄₄

" (12.1 cm) minimum drain trap

clearance

G. Supports at both ends and middle

H. Drain pan

I. Gas line with 3" (7.6 cm) minimum

drip leg

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 4³⁄₄" (12.1 cm) 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 “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 avoid 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 sloping downward ³⁄₄" (1.9 cm) lower than 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 Connections

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

When using the horizontal alternate vent configuration, you must

use the RF000142 vent drain kit. See “Alternate Flue/Vent Location” illustration.

NOTE: Alternate vertical piping connections cannot be used when an upflow furnace is installed with the supply air discharging to the right, or when a counterflow furnace is installed with the supply air discharging to the left. In either case, use the standard flue and combustion air piping connections.

Alternate Flue/Vent Location

Recommended Installation Positions—Upright Counterflow

A. Vent/Drain B. Airflow C. Field supplied drain hose

NOTES:

■ The field supplied drain hose is connected from the vent/

drain connection to the condensate drain line with a field supplied connector.

■ Make a small loop in the drain hose to serve as a P-trap.

Recommended Installation Positions—Upright Upflow

A. Bottom return duct connection

B. Alternate flue and combustion air pipe locations

C. Air discharge

Recommended Installation Positions—Horizontal Upflow—Left Side Panel Discharge

A. Air discharge

B. Alternate flue pipe location

C. Bottom return duct connection

Recommended Installation Positions—Horizontal Counterflow—Right Side Panel Discharge

A. Air discharge B. Alternate flue pipe location

C. Side return duct connections D. Bottom return duct connection

A. Bottom return duct connection

B. Alternate flue pipe location

C. Air discharge

Recommended Installation Positions—Horizontal Upflow—Right Side Panel Discharge

A. Bottom return duct connection B. Air discharge

Recommended Installation Positions—Horizontal Counterflow—Left Side Panel Discharge

For installations above 7,000 ft (2,133.6 m), refer to your distributor for required kit(s).

WFD19, WGFM19, WGFM29, WGFD29 Gas Orifice Chart

A. Air discharge B. Bottom return duct connection

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 “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.

NOTE: Never install the furnace on the ground or allow it to be exposed to water. Refer to “Location Requirements and Considerations—Furnace Suspension” for further details.

Pressure

Altitude Gas Kit Orifice

0 to 7,000 ft (2,133.6 m)

WFM19 Gas Orifice Chart

Altitude Gas Kit Orifice

0 to 7,000 ft (2,133.6 m)

NOTES:

■ In Canada, gas furnaces are only certified to 4,500 ft

(1,371.6 m).

■ LPM-05 supports White-Rodgers 2-stage valve only.

■ LPM-06 supports both Honeywell and White-Rodgers

2-stage valves.

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 proper furnace operation. All conversions must be performed by a qualified installer or service agency.

Natural None #43 3.5" W.C. None Propane LPM-05

LPM-06

Natural None #45 3.5" W.C. None Propane LPM-06 #55 10.0" W.C. None

#55 10.0" W.C. None

Manifold Pressure

Switch Change

Pressure Switch Change

VENT/FLUE PIPE AND

COMBUSTION AIR PIPE

PROPANE GAS/HIGH ALTITUDE

INSTALLATIONS

WARNING

Possible property damage, personal injury or death may occur if the correct conversion kits are not installed. The appropriate kits must be applied to ensure safe and proper furnace operation. All 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.

High altitude installations may require both a pressure switch and an orifice/spring 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.

Goodman 52

Failure to follow these instructions can result in bodily injury or death. Carefully read and follow all instructions given in this section.

Upon completion of the furnace installation, carefully inspect the entire flue system both inside and outside of the furnace to assure it is properly sealed. Leaks in the flue system can result in serious personal injury or death due to exposure to flue products, including carbon monoxide.

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.

General

WARNING

Goodman 53

WARNING

Goodman 54

NOTES:

■ This furnace must not be connected to Type 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.

■ Do not 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 avoid flue pipe separation, shifting or sagging during furnace operation.

Dual Certification: Nondirect/Direct Vent

This furnace is dual certified and may be installed as a nondirect vent (single pipe) or direct vent (dual pipe) appliance. A nondirect 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.

Materials and Joining Methods

WARNING

To avoid bodily injury, fire or explosion, solvent cements must be kept away from all ignition sources (for example, sparks, open flames and excessive heat) as they are combustible liquids. Avoid breathing cement vapors or contact with skin and/or eyes.

2" or 3" (5.1 cm or 7.6 cm) nominal diameter PVC Schedule 40 pipe meeting ASTM D1785, PVC primer meeting ASTM F656 and PVC solvent cement meeting ASTM D2564 specifications must be used. Fittings must be DWV type fittings meeting ASTM D2665 and ASTM D3311. Carefully follow the pipe manufacturer’s instructions for cutting, cleaning and solvent cementing of PVC.

The use of Schedule 40 PVC Cellular Core (Foam Core) plastic pipe is also acceptable as a flue/vent and intake pipe material. PVC primer meeting ASTM F656 and PVC solvent cement meeting ASTM D2564 specifications must be used. Fittings must be DWV type fittings meeting ASTM D2665 and ASTM D3311. Carefully follow the pipe manufacturer’s instructions for cutting, cleaning and solvent cementing of PVC.

As an alternative to PVC pipe, primer, solvent cement and fittings, ABS materials which are in compliance with the following specifications may be used. 2" or 3" (5.1 cm or 7.6 cm) ABS Schedule 40 pipe must meet ASTM D1527 and, if used in Canada, must be CSA approved. Solvent cement for ABS to ABS joints must meet ASTM D2235 and, if used in Canada, must be CSA approved. The solvent cement for the PVC to ABS transition joint must meet ASTM D3138. Fittings must be DWV type fittings meeting ASTM D2661 and ASTM D3311 and, if used in Canada, must be CSA approved. Carefully follow the manufacturer’s instructions for cutting, cleaning, and solvent cementing PVC and/or ABS.

Goodman 55

All 90° elbows must be medium-radius (¹⁄₄ bend DWV) or long-radius (long sweep ¹⁄₄ bend DWV) types conforming to ASTM D3311. A medium-radius (¹⁄₄ bend DWV) elbow measures 3¹⁄₁₆" (7.8 cm) minimum from the plane of one opening to the centerline of the other opening for 2" (5.1 cm) diameter pipe, and 4⁹⁄₁₆" (11.6 cm) minimum for 3" (7.6 cm) pipe.

Proper Vent/Flue and Combustion Air

Piping Practices

Adhere to these instructions to ensure safe and proper furnace performance. The length, diameter and number of elbows of the vent/flue pipe and combustion air pipe (when applicable) affects the performance of the furnace and must be carefully sized. All piping must be installed in accordance with local codes and these instructions.

Piping must be adequately secured and supported to prohibit sagging, joint separation and/or detachment from the furnace. Horizontal runs of vent/flue piping must be supported every 36" to 60" (91.4 cm to 1.5 m) and must maintain a ¹⁄₄" (6.4 mm) per foot downward slope, back toward the furnace, to properly return condensate to the furnace’s drain system. Allowances should be made for minor expansion and contraction due to temperature variations. For this reason, particular care must be taken to secure piping when a long run is followed by a short offset of less than 40" (101.6 cm).

Precautions should be taken to prevent condensate from freezing inside the vent/flue pipe and/or at the vent/flue pipe termination. All vent/flue piping exposed to freezing temperatures below 35°F (2ºC) for extended periods of time must be insulated with ¹⁄₂" (1.3 cm) thick closed-cell foam. Also all vent/flue piping exposed outdoors in excess of the terminations shown in this manual (or in unheated areas) must be insulated with ¹⁄₂" (1.3 cm) thick closed-cell foam. Inspect piping for leaks prior to installing insulation.

Termination Locations

NOTE: Refer to “Location Requirements and Considerations” for combustion air contaminant restrictions.

The following bullets and illustration describe the restrictions concerning the appropriate location of vent/flue pipe and combustion air intake pipe (when applicable) terminations. Refer to “Nondirect Vent (Single Pipe) Piping and Direct Vent (Dual Pipe) Piping” located in this section for specific details on termination construction.

■ All terminations (flue and/or intake) must be located at least

12" (30.5 cm) above ground level or the anticipated snow level.

■ Vent terminations (nondirect and direct vent) must terminate

at least 36" (91.4 cm) above any forced air inlet located within 10 ft (3 m).

NOTE: This provision does not apply to the combustion air intake termination of a direct vent application.

■ The vent termination of a nondirect vent application must

terminate at least 48" (121.9 cm) below, 48" (121.9 cm) horizontally from or 12" (30.5 cm) above any door, window or gravity air inlet into any building.

■ The vent termination of a direct vent application must

terminate at least 12" (30.5 cm) from any opening through which flue gases may enter a building (door, window or gravity air inlet).

■ The vent termination of vent pipe run vertically through a roof

must terminate at least 12" (30.5 cm) above the roof line (or the anticipated snow level) and be at least 12" (30.5 cm) from any vertical wall (including any anticipated snow buildup).

■ A vent termination shall not terminate over public walkways

or over an area where condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of regulators, relief valves or other equipment.

■ The combustion air intake termination of a direct vent

application should not terminate in an area which is frequently dusty or dirty.

Vent Termination Clearances

Vent/Flue Pipe

Vent/flue pipe can be secured to the vent/flue coupling using the rubber coupling and worm gear hose clamps provided with this furnace. See “Standard Connections” illustration. The rubber coupling allows separation of the vent/flue pipe from the furnace during servicing. Combustion air and vent piping should be routed in a manner to avoid contact with refrigerant lines, metering devices, condensate drain lines, etc. If necessary, clearances may be increased by utilizing two 45º long-sweep elbows and creating an “S” joint to provide additional space at connection locations. This joint can be rotated on the fitting to establish maximum clearance between refrigerant lines, metering devices, condensate drain lines, etc. This joint is the equivalent of one 90º elbow when considering elbow count.

Vent Term Clear G 2009 ENV1

A. Nondirect vent and direct vent

vent/flue terminations

B. Nondirect vent—vent/flue

terminations C. No terminations above walkway D. 48" (121.9 cm) minimum

E. 12" (30.5 cm) minimum

F. Direct vent—vent/flue

termination G. Forced air inlet H. Grade or highest anticipated

snow level

I. 3" (7.6 cm) minimum

J. Less than 10 ft (3 m)

NOTE: In Canada, the Canadian Fuel Gas Code takes precedence over the preceding termination restrictions.

Canadian Venting Requirements

In Canada, venting must conform to the requirements of the current CAN/CSA-B149.1-05 Installation Code. Use only CSA approved, ULC-S636 compliant 2" or 3" (5.1 cm or 7.6 cm) diameter PVC or ABS pipe, solvent cement and fittings throughout. The certified piping should be clearly marked with the ULC Std “S636” on the pipe and fittings.

Carefully follow the pipe manufacturers’ instructions for cutting, cleaning and solvent cementing PVC and/or ABS.

The vent can be run through an existing unused chimney provided the space between the vent pipe and the chimney is insulated and closed with a weather-tight, corrosion-resistant flashing.

Standard Furnace Connections

It is the responsibility of the installer to ensure that the piping connections to the furnace are secure, airtight and adequately supported.

As shipped, attachment “couplings” for vent/flue and combustion air intake pipe connections are provided on the furnace’s top cover (upflow) or base pan (counterflow).

To use the standard connections, field-supplied vent/flue pipe and combustion air intake pipe (when applicable) should be secured directly to the furnace at these locations.

Increased Clearance Configuration

Clear Config G 2009

A. Vent pipe B. 45º long-sweep elbows

NOTES:

■ Do not use other commercially available “no hub connectors”

due to possible material conflicts.

■ The vent/flue pipe can also be secured using a PVC or ABS

elbow or coupling using the appropriate glue (see “Materials and Joining Methods”).

■ For nondirect vent installations, a minimum of one 90° elbow

should be installed on the combustion air intake coupling to guard against inadvertent blockage.

Combustion Air Pipe—Direct Vent Installations

On upflow units, secure the combustion air intake pipe directly to the air intake coupling. On counterflow units secure the combustion air intake pipe to the air intake coupling using the rubber coupling and worm gear hose clamps provided with the unit. The counterflow rubber coupling allows service removal of air intake piping internal to the furnace blower compartment.

NOTE: Because of probable material conflicts, do not use other commercially available “no hub connectors.” The combustion air intake pipe can also be secured directly to the counterflow unit air intake pipe coupling.

Combustion Air Pipe—Nondirect Vent Installations

A minimum of one 90° elbow should be installed on the combustion air intake coupling to guard against inadvertent blockage.

Standard Connection—Upflow

A. 90º PVC elbow (nondirect vent only) B. Combustion air pipe (direct

vent only)

C. Rubber coupling with worm

gear hose clamps

D. Vent/flue pipe

Standard Connection—Counterflow

A. 90º PVC elbow (nondirect

vent only)

B. Combustion air pipe (direct

vent only)

C. Rubber couplings with worm

gear hose clamps

D. Vent/flue pipe

Alternate Furnace Connections

If the standard locations are undesirable for a specific installation, alternate side panel locations are available for both combustion air inlet and vent/flue pipe connections. These locations may be of particular benefit to upright upflow installations requiring additional access to an A coil, or to upright counterflow installations requiring additional access to a filter or electronic air cleaner, or to horizontal installations desiring vent/flue (and combustion air intake) piping run vertically from the side of the cabinet.

NOTE: Standard and alternate locations can be combined (for example, an installation may use the standard combustion air intake location but use the alternate vent/flue location or vice versa), if needed.

WARNING

Edges of sheet metal holes may be sharp. Use gloves as a precaution when removing hole plugs.

Alternate Vent/Flue Location

The alternate vent/flue location is the large hole directly in line with the induced draft blower outlet. To use the alternate vent/flue location, refer to the following steps and the “Alternate Vent/Flue Location” illustration.

NOTE: Counterflow instructions follow the upflow instructions.

Upflow Units

1. Remove and save the 4 screws securing the vent/flue

coupling to the furnace top panel.

Counterflow Units

Remove and save the 4 screws securing the vent/flue coupling to the furnace base pan. Also remove the 3 screws securing the furnace’s internal vent/flue piping to the blower deck.

Upflow and Counterflow Units

2. Loosen the worm gear hose clamps on the rubber elbow and

detach the rubber elbow from both the induced draft blower and the vent/flue pipe.

3. Remove the vent/flue pipe from the furnace.

Upflow Units

4. Cut the vent/flue pipe 3³⁄₄" (9.5 cm) from the flanged end of

the pipe. See “Vent/Flue Pipe Cuts” illustration. NOTE: The section of pipe attached to the coupling will reach

through the side panel to the induced draft blower.

5. Discard remaining pipe and elbows.

Counterflow Units

Cut the vent/flue pipe 3³⁄₄" (9.5 cm) from the blower deck coupling. See “Vent/Flue Pipe Cuts” illustration

Save vent/flue pipe attached to the blower deck coupling for use in the alternate location.

Discard remaining pipe and elbows.

Goodman 56

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