Goodman Gmv9 User manual

IO-243F 11/05

INSTALLATION INSTRUCTIONS

GMV9/GCV9

-S

TAGE

-F

IRED

ARM

URNACE

*NOTE: Please contact your distributor or our

website for the applicable product data book

referred to in this manual.

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.

(Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace)

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.

Installer: Affix all manuals adjacent to the unit.

CUS

These furnaces comply with requirements

embodiedintheAmericanNationalStandard

/ National Standard of CanadaANSI

Z21.47·CSA-2.3GasFiredCentral Furnaces.

Table of Contents

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

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

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

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

IV. Location Requirements & Considerations ................................................................................................................. 7

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

CLEARANCES AND ACCESSIBILITY ......................................................................................................................... 8

FURNACE SUSPENSION ....................................................................................................................................... 8

EXISTING FURNACE REMOVAL .............................................................................................................................. 8

THERMOSTAT LOCATION ...................................................................................................................................... 8

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

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

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

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

DRAIN TRAP AND LINES .................................................................................................................................... 11

LEVELING ....................................................................................................................................................... 11

ALTERNATE VENT/FLUE AND COMBUSTION AIR CONNECTIONS................................................................................. 11

ALTERNATE ELECTRICAL AND GAS LINE CONNECTIONS .......................................................................................... 11

DRAIN PAN ..................................................................................................................................................... 11

FREEZE PROTECTION........................................................................................................................................ 11

FURNACE SUSPENSION ..................................................................................................................................... 11

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

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

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

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

MATERIALS AND JOINING METHODS .................................................................................................................... 12

PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES ............................................................................... 12

TERMINATION LOCATIONS .................................................................................................................................. 13

CANADIAN VENTING REQUIREMENTS ................................................................................................................... 13

STANDARD FURNACE CONNECTIONS .................................................................................................................... 13

ALTERNATE FURNACE CONNECTIONS ................................................................................................................... 14

NON-DIRECT VENT (SINGLE PIPE) PIPING ........................................................................................................... 15

DIRECT VENT (DUAL PIPE) PIPING ..................................................................................................................... 16

VENT/INTAKE TERMINATIONS FOR INSTALLATION OF MULTIPLE DIRECT VENT FURNACES ............................................. 18

CONCENTRIC VENT TERMINATION........................................................................................................................ 18

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

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

UPRIGHT INSTALLATIONS ................................................................................................................................... 18

HORIZONTAL INSTALLATIONS .............................................................................................................................. 20

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

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

115 VOLT LINE CONNECTIONS........................................................................................................................... 21

24 VOLT THERMOSTAT WIRING .......................................................................................................................... 22

SINGLE-STAGE THERMOSTAT APPLICATION ........................................................................................................... 22

24 VOLT DEHUMIDISTAT WIRING ........................................................................................................................ 22

FOSSIL FUEL APPLICATIONS .............................................................................................................................. 23

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

24 VOLT HUMIDIFIER ........................................................................................................................................ 23

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

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

GAS PIPING CONNECTIONS................................................................................................................................24

PROPANE GAS TANKS AND PIPING ..................................................................................................................... 25

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

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

FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCTWORK .................................................... 26

UPRIGHT INSTALLATIONS ................................................................................................................................... 27

HORIZONTAL INSTALLATIONS .............................................................................................................................. 27

XIV. Startup Procedure &Adjustment ............................................................................................................................. 27

HEAT ANTICIPATOR SETTING .............................................................................................................................. 27

DRAIN TRAP PRIMING ....................................................................................................................................... 27

FURNACE OPERATION ........................................................................................................................................ 27

GAS SUPPLY PRESSURE MEASUREMENT ............................................................................................................. 28

GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT ................................................................................. 28

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

TEMPERATURE RISE ......................................................................................................................................... 29

CIRCULATOR BLOWER SPEEDS .......................................................................................................................... 29

BLOWER HEAT OFF DELAY TIMINGS ................................................................................................................... 31

XV. Normal Sequence of Operation................................................................................................................................. 31

POWER UP..................................................................................................................................................... 31

HEATING MODE ............................................................................................................................................... 31

COOLING MODE .............................................................................................................................................. 32

FAN ONLY MODE............................................................................................................................................. 32

XVI. Operational Checks .................................................................................................................................................. 32

BURNER FLAME ............................................................................................................................................... 32

PRIMARY LIMIT ................................................................................................................................................ 32

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

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

INTEGRATED CONTROL MODULE ......................................................................................................................... 33

PRIMARY LIMIT ................................................................................................................................................ 33

AUXILIARY LIMIT .............................................................................................................................................. 33

ROLLOUT LIMIT ............................................................................................................................................... 33

PRESSURE SWITCHES ....................................................................................................................................... 33

FLAME SENSOR ............................................................................................................................................... 33

XVIII. Troubleshooting...................................................................................................................................................... 33

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

DIAGNOSTIC CHART ......................................................................................................................................... 33

RESETTING FROM LOCKOUT .............................................................................................................................. 33

XIX. Maintenance .............................................................................................................................................................. 33

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

FILTERS.......................................................................................................................................................... 34

BURNERS ....................................................................................................................................................... 34

INDUCED DRAFT AND CIRCULATOR BLOWERS ....................................................................................................... 34

CONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER ONLY)..................................................................... 34

FLAME SENSOR (QUALIFIED SERVICER ONLY)...................................................................................................... 34

FLUE PASSAGES (QUALIFIED SERVICER ONLY)..................................................................................................... 34

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

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

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

Table of Contents

APPENDIX

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

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

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 ANDSERVICEMUSTBEPERFORMEDBYA QUALIFIEDINSTALLER,

SERVICE AGENCY OR THE GAS SUPPLIER.

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.

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.

B10259-216

TOTHE 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 regis-

tration 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, con-

tact 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 be-

yond our control such as power outages, gas service interruptions,

product installation, or component failures could result in heating

system operational problems.

TOTHE 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, cir-

culating air temperature rise, minimum or maximum CFM, and mo-

tor speed connections.

TRANSPORTATION DAMAGE

All units are securely packed in shipping containers tested accord-

ing to International Safe TransitAssociation specifications. The car-

ton 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.

Keepthisliteratureinasafeplaceforfuture reference.

I. COI. CO

I. COMPOMPO

MPOMPO

MPONENT IDNENT ID

NENT IDNENT ID

NENT IDENTIFIENTIFI

ENTIFIENTIFI

ENTIFICC

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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

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

Upflow/Horizontal Counterflow/Horizontal

BLOWER COMPARTMENT BURNER COMPARTMENT

56787910

17 19

20 21

2019

32 18

123

456

1211

CFM

USC

DEHUM

CUTFOR

87 4321

Intell-Ignition

TSTAT

S4 S3

OFF

SINGLE

TWO

ON OFF

BURNER COMPARTMENT BLOWER COMPARTMENT

97874

527 28 10

1615

1219 20

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. Dischargeyourbodytogroundbefore removing anewcontrol

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. PROO

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This furnace is primarily designed for residential home-heating ap-

plications. It is NOT designed or certified for use in mobile homes,

trailers or recreational vehicles. This unit is NOT designed or certi-

fied 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 follow-

ing stipulations:

• Itmustbeinstalledpertheinstallation 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 op-

tional 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.

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, CONDENSTAION, ELECTRICAL SHOCK OR CARBON

MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION,

OR MAINTENANCE OF THIS PRODUCT.

II. SAFETII. SAFET

II. SAFETYY

Please adhere to the following warnings and cautions when install-

ing, adjusting, altering, servicing, or operating the furnace.

TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION,

ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE, REFER TO THIS

MANUAL. FOR ADDITIONAL ASSISTANCE OR INFORMATION, CONSULT A

QUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.

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.

WARNING

TO PREVENT POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH

DUE TO ELECTRICAL SHOCK, THE FURNACE MUST BE LOCATED TO PROTECT

THE ELECTRICAL COMPONENTS FROM WATER.

WARNING

THIS UNIT MUST NOT BE USED AS A "CONSTRUCTION HEATER" DURING THE

FINISHING PHASES OF CONSTRUCTION ON A NEW STRUCTURE. THIS TYPE OF

USE MAY RESULT IN PREMATURE FAILURE OF THE UNIT DUE TO EXTREMELY

LOW RETURN AIR TERMPERATURES AND EXPOSURE TO CORROSIVE OR VERY

DIRTY ATMOSPHERES.

WARNING

HEATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE, ROUTINE,

INSPECTION, MAINTENANCE AND SUPERVISION. IF THE BUILIDNG 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 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 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.

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 precautions during furnace installation and ser-

vicing to protect the integrated control module from damage. By

putting the furnace, the control, and the person at the same electro-

static potential, these steps will help avoid exposing the integrated

control module to electrostatic discharge. This procedure is appli-

cable to both installed and non-installed (ungrounded) furnaces.

1. Disconnect all power to the furnace. Do not touch the

integratedcontrolmoduleoranywire connected to thecontrol

prior to discharging your body’s electrostatic charge to

ground.

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. Improperorinsufficientcombustionair can expose

building occupants to gas combustion products that could

includecarbon monoxide. Referto Section V, Combustion

and Ventilation Air Requirements.

• Setthefurnaceona level floortoenablepropercondensate

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

counterflowunitinstallationsoveranycombustiblematerial

(including wood). Refer to subbase instructions for

installation details. (NOTE:Asubbase 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. Thisprotectsthenon-directventfurnacefrom

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

WARNING

TO 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 in-

structions,all local building codes and ordinances. In theirabsence,

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.

Acopy of the National Fuel Gas Code NFPA54/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 ob-

tained 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

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GENERAL

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 loca-

tion. 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

pipingcan be a limiting factor inthelocationofthe furnace.

• Locatethefurnace socondensateflowsdownwardsto the

drain. Donotlocatethefurnaceorits condensate drainage

system in any area subject to below freezing temperatures

nected 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, NFPA54/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 bath-

room 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 continu-

ously;

e. Test for draft hood equipped spillage at the draft hood relief open-

ing 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, re-

turn 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.

Corrections must be in accordance with the latest edition of the Na-

tional Fuel Gas Code NFPA 54/ANSI Z223.1 and/or CSA B149 In-

stallation 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 NFPA54/ANSI Z223.1 and/or CSAB149 Installation

Codes.

THERMOSTAT LOCATION

The thermostst should be placed approximately five feet from the

floor on a vibration-free, inside wall in an area having good air circu-

lation. 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.

Installations must adhere to the clearances to combustible materi-

als which this furnace has been design certified to. The minimum

clearance information for this furnace is provided on the unit’s clear-

ance label. These clearances must be permanently maintained.

Clearances must also accommodate an installation’s gas, electri-

cal, drain trap, and drain line connections. If the alternate combus-

tion air intake or vent/flue connections are used additional clear-

ance 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 mate-

rials, a minimum of 24 inches service clearance must be available

in front of the unit. TOP

BOTTOM

SIDE SIDE SIDE

TOP

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. Re-

fer to Product Data Book applicable to your model* for minimum

clearances to combustible surfaces. One of the ventilation open-

ings 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.

TILT OUTWARD TO ALLOW FOR

DOOR AND CIRCULATOR BLOWER

REMOVAL

3/8" DIAMETER

THREADED ROD

(6 PLACES)

PROVIDE 8" MINMUM CLEARANCE BETWEEN

CENTER ROD AND FURNACE CABINET

TO ALLOW FOR CIRCULATOR BLOWER REMOVAL

ASSURE FURNACE IS LEVEL FROM

END TO END AND HAS A SLIGHT

FORWARD TILT WITH THE FRONT

OF THE FURNACE 0"-3/4"

BELOW THE BACK OF THE FURNACE

POSITION AS CLOSE AS POSSIBLE

TO BLOWER DECK TO ALLOW FOR

CIRCULATOR BLOWER REMVOAL

2"X2"X1/8" ANGLE IRON

(3 PLACES)

HOLD DOWN

NUTS

SUPPORT

NUTS

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 Cen-

tral Furnaces ANSI Z21.47·CSA-2.3 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 con-

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

product data book referred to in this manual.

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 work-

ing conditions for personnel.

(e) While all forms of building construction cannot be covered in de-

tail, 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 re-

quirements.

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.), addi-

tional 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

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 open-

ing 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 open-

ing shall be within 12 inches of the top and one within 12 inches of

the bottom of the enclosure.

Furnace

Water

Heater

Opening

Chimney or Gas Vent

Opening

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 equip-

ment 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.

(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

HOT

COLD

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.

V. CO. CO

. CO. CO

. COMBUSTIMBUSTI

MBUSTIMBUSTI

MBUSTIOO

ON & VENTILN & VENTIL

N & VENTILN & VENTIL

N & VENTILAA

ATITI

TITI

TIOO

ON AIR REQUIREMENTSN AIR REQUIREMENTS

N AIR REQUIREMENTSN AIR REQUIREMENTS

N AIR REQUIREMENTS

WARNING

POSSIBLE 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 heat-

ing/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 com-

bustionofgas-firedappliances,therebyexposingbuildingoccupants

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 (Section 5.3), or CSA B149 Installation Codes (Sec-

tions 7.2, 7.3, or 7.4), or applicable provisions of the local building

codes for determining the combustion air requirements for the ap-

pliances.

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 repro-

duced from the National Fuel Gas Code NFPA54/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 di-

lution 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

Furnace Water

Heater

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

enclosure*.

Outlet air duct

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.

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.

Furnace

Water

Heater

Opening

Chimney or Gas Vent

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 equip-

ment in the enclosure, but not less than

the sum of the areas of all vent

connectors in the confined space.

Alternate

Opening

Location

Equipment Located in Confined Spaces; All Air from Outdoors -

Single Air Opening. See 5.3.3-b.

5.When directlycommunicating withthe outdoors,the single open-

ing 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 enclo-

sure.

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 ad-

equate 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 block-

ing 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 au-

tomatically during equipment operation.

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.

Furnace

Water

Heater

Outlet Air

Chimney or Gas Vent

NOTE: The inlet and outlet air

openings 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 enclosure.

Inlet Air

Ventilation louvers for

unheated crawl space

lternate

air inlet

Ventilation louvers

(each end of attic)

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

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 enclosure.

Furnace

Water

Heater

Outlet Air

Chimney or Gas Vent

NOTE: The inlet and outlet air

openings 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 enclosure.

Inlet air duct

[ends 1 ft (300 mm)

above floor]

Ventilation louvers

(each end of attic)

Equipment Located in Confined Spaces; All Air from Outdoors

Through Ventilated Attic. See 5.3.3-b.

3.When communicatingwith theoutdoors throughhorizontalducts,

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.

5.3.6 Special Conditions Created by Mechanical Exhausting or Fire-

places:

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

may create conditions requiring special attention to avoid unsatisfac-

tory operation of installed gas utilization equipment. Air from Inside

Building. See 5.3.3-a.

VI. INSTVI. INST

VI. INSTALLALL

ALLALL

ALLAA

ATITI

TITI

TIOO

ON POSITIN POSITI

N POSITIN POSITI

N POSITIOO

ONSNS

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 at-

tached to the side panel(s) and/or basepan. For horizontal upflow

furnaces, return air ductwork must be attached to the basepan. For

bothupright or horizontal counterflow furnaces, returnductworkmust

be attached to the basepan (top end of the blower compartment).

NOTE: Ductwork must never be attached to the back of the fur-

nace. Contact your distributor for proper airflow requirements and

numberofrequiredductworkconnections. Referto“Recommended

Installation Positions” figure for appropriate installation positions,

ductwork connections, and resulting airflow arrangements.

VII. HOVII. HO

VII. HORIZORIZO

RIZORIZO

RIZONTNT

NTNT

NTAL APPLIAL APPLI

AL APPLIAL APPLI

AL APPLICC

CAA

ATITI

TITI

TIOO

ONS & CONS & CO

NS & CONS & CO

NS & CONSIDNSID

NSIDNSID

NSIDERAERA

ERAERA

ERATITI

TITI

TIOO

ONSNS

NSNS

GENERAL

Horizontal applications, in particular, may dictate many of the

installation’s specifics such as airflow direction, ductwork connec-

tions, flue and combustion air pipe connections, etc. The basic ap-

plication 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:

ALTERNATE VENT/FLUE

AND COMBUSTION AIR

INTAKE LOCATIONS

FURNACEMUSTBELEVEL

FROMENDTOEND

FURNACEMUSTBELEVEL

ORSLIGHTLYTILTEDFORWAR

WITHTHEDOORS0"- 3/4"

BELOWTHEBACKPANEL

DRAINLINEWITH1/4" PERFOOT

DOWNWARDSLOPE

36"MINIMUMSERVICE

CLEARANCEREQUIRED

FURNACEMUSTBESUPPORTED

ATBOTHENDSANDMIDDLE

DRAIN PAN

GASLINEWITH

DRIPLEG(3"MINIMUM)

43/4"MINIMUM

DRAINTRAP

CLEARANCE

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 mini-

mum 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 tempera-

tures near or below freezing, adequate measures must be taken to

prevent condensate from freezing.

LEVELING

Leveling ensures proper condensate drainage from the heat ex-

changer 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, gener-

ated 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 combus-

tion air piping are available for upflow furnaces with left discharge

and counterflow furnaces with right air discharge. This configura-

tion allows the flue and combustion air piping to be run vertically

through the side of the furnace. Refer to the “Recommended Instal-

lation Positions” figure for further detail. The standard piping con-

nections 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 connec-

tions.

AIR

DISCHARGE

AIR

DISCHARGE

AIR

DISCHARGE

Bottom

Return

Duct

Connection

Bottom

Return

Duct

Connection

Bottom

Return

Duct

Connection

Side

Return

Duct

Connection

Side

Return

Duct

Connection

UPFLOW

UPRIGHT

UPFLOW HORIZONTAL

RIGHT AIR DISCHARGE

UPFLOW HORIZONTAL

LEFT AIR DISCHARGE

ALTERNATE FLUE AND

COMBUSTION AIR PIPE

LOCATIONS

ALTERNATE FLUE AND

COMBUSTION AIR PIPE

LOCATIONS

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,

orwhenacounterflowfurnaceisinstalledwith 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 con-

nections 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 VII, 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. PROO

OPP

PANE GAANE GA

ANE GAANE GA

ANE GAS /HIS /HI

S /HIS /HI

S /HIGH ALGH AL

GH ALGH AL

GH ALTITUDTITUD

TITUDTITUD

TITUDE INSTE INST

E INSTE INST

E INSTALLALL

ALLALL

ALLAA

ATITI

TITI

TIOO

ONSNS

NSNS

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 INSURE 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 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).

High Stage Low Stage

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

Propane LPM-03* #55 10.0" w.c. 6.0" w.c. None

Orifice

NOTE

:In Canada, gas furnaces are only certified to 4500 feet.

0-7000

Manifold Pressure Pressure

Switch Change

Gas Altitude Kit

Contact the distributor for a tabular listing of appropriate

manufacturer’skits for propane gas and/or high altitude installations.

The indicated kits must be used to insure safe and proper furnace

operation. Allconversionsmustbeperformedbyaqualifiedinstaller,

or service agency.

IX. VENT/FLIX. VENT/FL

IX. VENT/FLUE PIPE & COUE PIPE & CO

UE PIPE & COUE PIPE & CO

UE PIPE & COMBUSTIMBUSTI

MBUSTIMBUSTI

MBUSTIOO

ON AIR PIPEN AIR PIPE

N AIR PIPEN AIR PIPE

N AIR PIPE

GENERAL

WARNING

FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN BODILY INJURY OR

DEATH. CAREFULLY READ AND FOLLOW ALL INSTRUCTIONS GIVEN IN THIS

SECTION.

WARNING

UPON COMPLETION OF THE FURNACE INSTALLATION, CAREFULLY INSPECT THE

ENTIRE FLUE SYSTEM BOTH INSIDE AND OUTSIDE 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. Be-

cause of the relatively low flue gas temperature and water conden-

sation requirements, PVC pipe is used as venting material.

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. 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 connec-

tors are compatible with furnace flue products. Additionally, it is the

responsibility of the installer to ensure that all piping and connec-

tions 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 in-

take pipe. Refer to the appropriate section for details concerning

piping size, length, number of elbows, furnace connections, and ter-

minations.

MATERIALS AND JOINING METHODS

WARNING

TO AVOID BODILY INJURY, FIRE OR EXPLOSION, SOLVENT CEMENTS MUST BE

KEPT AWAY FROM ALL IGNITION SOURCES (I.E., SPARKS, OPEN FLAMES, AND

EXCESSIVE HEAT) AS THEY ARE COMBUSTIBLE LIQUIDS. AVOID BREATHING

CEMENT VAPORS OR CONTACT WITH SKIN AND/OR EYES.

Two- or three-inch nominal diameter PVC Schedule 40 pipe meet-

ing ASTM D1785, PVC primer meeting ASTM F656, and PVC sol-

vent cement meeting ASTM D2564 specifications must be used.

Fittings must be DWV type fittings meetingASTM D2665 andASTM

D3311. Carefully follow the pipe manufacturer’s instructions for cut-

ting, 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 specifica-

tions may be used. Two-or-three-inch ABS Schedule 40 pipe must

meet ASTM D1527 and, if used in Canada, must be CSA listed.

Solvent cement forABS toABS joints must meetASTM D2235 and,

if used in Canada, must be CSAlisted. 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 listed. Carefully follow the manu-

facturers’ instructions for cutting, cleaning, and solvent cementing

PVC and/orABS.

All 90° elbows must be medium radius (1/4 bend DWV) or long ra-

dius(Longsweep1/4 bendDWV)typesconforming toASTM D3311.

A medium radius (1/4 bend DWV) elbow measures 3 1/16” mini-

mum from the plane of one opening to the centerline of the other

opening for 2” diameter pipe, and 4 9/16” minimum for 3” pipe.

PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES

Adhere to these instructions to ensure safe and proper furnace per-

formance. The length, diameter, and number of elbows of the vent/

flue pipe and combustion air pipe (when applicable) affects the per-

formance of the furnace and must be carefully sized. All piping

must be installed in accordance with local codes and these instruc-

tions.

Piping must be adequately secured and supported to prohibit sag-

ging, joint separation, and/or detachment from the furnace. Hori-

zontal runs of vent/flue piping must be supported every three feet

and must maintain a 1/4 inch per foot downward slope, back to-

wards 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, particu-

lar care must be taken to secure piping when a long run is followed

by a short offset of less than 40 inches.

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 for

extended periods of time must be insulated with 1/2” thick closed

CANADIAN VENTING REQUIREMENTS

In Canada, venting must conform to the requirements of the current

CAN/CSA-B149 Installation Code. Use only CSAlisted two or three

inchdiameterPVCorABSpipe,solventcement,andfittings through-

out. Carefully follow the pipe manufacturers’ instructions for cut-

ting, 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 con-

nections to the furnace are secure, airtight, and adequately sup-

ported.

As shipped, attachment “couplings” for vent/flue and combustion

air intake pipe connections are provided on the furnace’s top cover

(upflow) or basepan (counterflow). To use the standard connec-

tions, field supplied vent/flue pipe and combustion air intake pipe

(when applicable) should be secured directly to the furnace at these

locations.

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 fur-

nace (see “Standard Connections” figure). The rubber coupling al-

lows separation of the vent/flue pipe from the furnace during servic-

ing. CombustionAir and Vent piping should be routed in a manner

to avoid contact with refrigerant lines, metering devices, conden-

sate drain lines, etc. If necessary, clearances may be increased

by utilizing two 45 deg. 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 be-

tween refrigerant lines, metering devices, and condensate drain

lines, etc. This joint is the equivalent of one 90 deg. elbow when

considering elbow count.

Increased Clearance Configuration

NOTE: Do not use other commercially available “no hub connec-

tors” due to possible material conflicts. The vent/flue pipe can also

be secured using a PVC orABS elbow or coupling using the appro-

priate glue (see Section IX, Materials and Joining Methods.

NOTE: For non-direct 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

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” thick closed cell foam. Inspect piping for

leaks prior to installing insulation.

TERMINATION LOCATIONS

NOTES: Refer to Section IV, Location Requirements and

Considerations for combustion air contaminant restrictions.

Thefollowing bulletsanddiagramdescribetherestrictions concern-

ing the appropriate location of vent/flue pipe and combustion air

intake pipe (when applicable) terminations. Refer to Non-Direct

Vent (Single Pipe) Piping and Direct Vent (Dual Pipe) Piping lo-

cated in this section for specific details on termination construction.

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

least12inchesabovegroundlevelortheanticipatedsnow

level.

• Vent terminations (non-direct and direct vent) must

terminate at least 3 feet above any forced air inlet located

within 10 feet.

NOTE: This provision does not apply to the

combustion air intake termination of a direct vent

application.

• The vent termination of a non-direct vent application must

terminate at least 4 feet below, 4 feet horizontally from, or

1 foot above any door, window, or gravity air inlet into any

building.

• The vent termination of a direct vent application must

terminate at least 12 inches 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 inches above the roof line

(or the anticipated snow level) and be at least 12 inches

fromanyverticalwall(includinganyanticipatedsnowbuild

up).

• Aventterminationshallnot terminate over publicwalkways

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.

12"

Non-Direct Vent

Vent/Flue Termination

No Terminations

Above Walkway

12"

min.

Non-Direct Vent

Vent/Flue Termination

Direct Vent

Vent/Flue Termination

<10'

Forced Air

Inlet

Non-Direct Vent

Direct Vent

Vent/Flue Terminations

Grade or Highest

Anticipated

Snow Level

3' min.

12" min.

4' min.

12" min.

Vent Termination Clearances

NOTE: In Canada, the Canadian Fuel Gas Code takes precedence

over the preceding termination restrictions.

On upflow units secure the combustion air intake pipe directly to

the air intake coupling. On counterflow units secure the combus-

tion air intake pipe to the air intake coupling using the rubber cou-

pling and worm gear hose clamps provided with the unit. The coun-

terflow 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 avail-

able “no hub connectors”. The combustion air intake pipe can also

be secured directly to the counterflow unit air intake pipe coupling.

NON-DIRECT VENT INSTALLATIONS

Aminimum of one 90° elbow should be installed on the combustion

air intake “coupling” to guard against inadvertent blockage.

RUBBER

COUPLING

WITH WORM

GEAR CLAMPS

RUBBER

COUPLINGS

WITH WORM

GEAR CLAMPS

COMBUSTION

AIR PIPE

(DIRECT VENT ONLY)

COMBUSTION

AIR PIPE

(DIRECT VENT ONLY)

VENT/FLUE

PIPE

VENT/FLUE

PIPE

90 PVC

ELBOW

(NON-DIRECT VENT)

90 PVC

ELBOW

(NON-DIRECT VENT)

STANDARD CONNECTIONS

UPFLOW COUNTERFLOW

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 (i.e., 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 PRE-

CAUTION 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 loca-

tion refer to the following steps and the “Alternate Vent/Flue Loca-

tion” figure.

NOTE: Counterflow instructions follow the upflow instructions.

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

coupling to the furnace top panel.

Counterflow units.

Remove and save the four screws securing the vent/flue

coupling to the furnace basepan. Also remove the three

screws securing the furnace’s internal vent/flue piping to the

blower deck.

2. Upflow and Counterflow units.

Loosen the worm gear hose clamps on the rubber elbow

and detach it from both the induced draft blower and the

vent/flue pipe.

3. Upflow and Counterflow units.

Remove the vent/flue pipe from the furnace.

4. Cut the vent/flue pipe 3.75 inches from the flanged end of

the pipe. See Vent/Flue Pipe Cuts figure.The section of pipe

attached to the coupling will reach through the side panel to

theinduceddraftblower. Discard remaining pipe and elbows.

Counterflow units.

Cut the vent/flue pipe 3.75 inches from the blower deck

coupling. SeeVent/FluePipe Cutsfigure. Save vent/flue pipe

attached to blower deck coupling for use in the alternate

location. Discard remaining pipe and elbows.

FLANGE

CUT HERE

3.75"

Vent/Flue Pipe Cuts

5. Remove plastic plug from alternate vent/flue location.

Relocate and install plug in standard vent/flue location (top

cover).

Counterflow units.

Remove plastic plug from alternate vent/flue location.

Relocate and install plug in standard vent/flue location

(basepan). Plug remaining hole in blower deck with plastic

plug included in the drain kit bag.

6. Upflow and Counterflow units.

Insertcutsectionofvent/fluepipeandcouplingintoalternate

vent/flue location. Using a rubber coupling and worm gear

hose clamps from the drain kit bag, attach the vent/flue pipe

andcouplingtotheinduced draftblower. Securethecoupling

to the cabinet using the screws removed in step 1 or with

field-supplied 3/8” #8 self drilling screws.

WARNING

THE RUBBER ELBOW IS NOT DESIGNED TO SUPPORAT A LOAD. WHEN THE

RUBBER ELBOW IS MOUNTED EXTERNALLY TO THE FURNACE CABINET,

EXTREME CARE MUST BE TAKEN TO ADEQUATELY SUPPORT FIELD-SUPPLIED

VENT/FLUE PIPING, AS DAMAGE CAN RESULT IN LEAKS CAUSING BODILY

INJURY OR DEATH DUE TO EXPOSURE TO FLUE GASES, INCLUDING CARBON

MONOXIDE.

7. Upflow and Counterflow units.

Forupright installations, externally mounttherubberelbow

to the vent/flue coupling using a worm gear hose clamp.

Secure field supplied vent/flue piping to the rubber elbow

using a worm gear hose clamp. NOTE: Use of the alternate

vent/flue location for upright installations, requires the drain

trap be installed on the same side of the unit as the flue

pipe.

8. Upflow and Counterflow units.

For horizontal installations, externally secure the field-

suppliedvent/fluepipedirectlytothevent/fluecouplingusing

a PVC orABS coupling or elbow.

ADDITIONAL PLUG

FROM DRAIN KIT

EXTERNALLY

MOUNT

RUBBER ELBOW

SECURE TO

ID BLOWER WITH

RUBBER COUPLING

AND HOSE

CLAMPS

COUNTERFLOW/UPRIGHT

(UPFLOW SIMILAR)

UPFLOW

REMOVE

4 SCREWS

REMOVE

PIPE

DETACH RUBBER

ELBOW FROM

ID BLOWER AND

VENT/FLUE

PIPE

REMOVE

4 SCREWS

DETATCH RUBBER

ELBOW FROM

ID BLOWER AND

VENT/FLUE

PIPE

COUNTERFLOW

REMOVE

PIPE

REMOVE

AND RELOCATE

REMOVE

AND RELOCATE

REMOVE

3 SCREWS

UPFLOW/HORIZONTAL

(COUNTERFLOW SIMILAR)

SECURE TO

ID BLOWER WITH

RUBBER COUPLING

AND HOSE

CLAMPS

SECURE TO

CABINET WITH

SCREWS

Alternate Vent/Flue Location

ALTERNATE COMBUSTION AIR INTAKE LOCATION

The alternate combustion air intake location consists of a large, un-

obstructed hole (alternate vent connection is aligned with the In-

duced Draft Blower). To use the alternate combustion air intake lo-

cation, refer to the following steps, and the “Alternate Combustion

Air Intake Location” figure.

NOTE: Counterflow unit instructions follow the upflow instructions.

1. Remove and save the four screws securing the combustion

air intake coupling to the furnace’s top panel (upflow).

Counterflow units.

Remove and save the four screws securing the combustion

air intake coupling to the basepan. Remove an additional

three screws securing the furnace’s internal combustion air

intake pipe to the blower deck.

2. Remove the combustion air intake coupling and gasket from

the top panel.

Counterflow units.

Remove the combustion air intake pipe from the furnace and

cut the pipe at the basepan coupling. Save the basepan

coupling and gasket from the blower deck coupling for use

in the alternate location. Discard the remaining pipe.

3. Remove plastic plug from alternate combustion air intake

location. Relocate and install plug in standard air intake

location (top cover).

Counterflow units.

Remove plastic plug from alternate combustion air intake

location. Relocate and install plug in standard air intake

location (basepan). Plug the remaining hole in the blower

deck with the plastic plug included in the drain kit bag.

4. Upflow and Counterflow units.

Withthegasketfacingthecabinet side panel,andtheflange’s

flat spot facing forward, secure the combustion air intake

coupling to the cabinet using the screws removed in step 1

or with field-supplied 3/8” #8 self -drilling screws.

CAUTION

BE SURE NOT TO DAMAGE INTERNAL WIRING OR OTHER COMPONENTS WHEN

REINSTALLING COUPLING AND SCREWS.

5. Upflow and Counterflow units.

For non-direct vent installations installed horizontally, a

minimum of one 90° elbow should be installed on the

combustion air intake coupling to guard against inadvertent

blockage. No elbow is required on the alternate combustion

air intake of upright installations, however, a minimum

clearance of 2 inches is required to assure proper air supply.

6. Upflow and Counterflow units.

For direct vent installations, secure field-supplied

combustion air intake pipe directly to the air intake coupling.

NOTE: A PVC coupling or elbow is required on counterflow

units.

ADDITIONAL

PLUG FROM

DRAIN KIT

SECURE

TO CABINET

UPFLOW/HORIZONTAL SHOWN

(COUNTERFLOW SIMILAR)

REMOVE

3 SCREWS

REMOVE

4 SCREWS

REMOVE

4 SCREWS

REMOVE

AND

RELOCATE

REMOVE

AND

RELOCATE

REMOVE

AND CUT

REMOVE

UPFLOW COUNTERFLOW

2" CLEARANCE

REQUIRED

(NON-DIRECT

VENT)

Alternate Combustion Air Intake Location

NON-DIRECT VENT (SINGLE PIPE) PIPING

Non-direct vent installations require only a vent/flue pipe. The vent

pipe can be run horizontally with an exit through the side of the

building or run vertically with an exit through the roof of the building.

The vent can also be run through an existing unused chimney; how-

ever, it must extend a minimum of 12 inches above the top of the

chimney. The space between the vent pipe and the chimney must

be closed with a weather-tight, corrosion-resistant flashing. For

details concerning connection of the vent/flue pipe to the furnace,

refer to Section IX, Vent/Flue Pipe and Combustion Air - Standard

Furnace Connections orAlternate Furnace Connections for specific

details. Refer to the following Non-Direct Vent (Single Pipe) Piping

- Vent/Flue Pipe Terminations forspecificdetails on termination con-

struction.

stalled on either side of the wall and solvent cemented to a length

of pipe connecting the two couplings. The length of pipe should be

the wall thickness plus the depth of the socket fittings to be in-

stalled on the inside and outside of the wall. The wall penetration

should be sealed with silicone caulking material.

In a basement installation, the vent/flue pipe can be run between

joist spaces. If the vent pipe must go below a joist and then up into

the last joist space to penetrate the header, two 45° elbows should

be used to reach the header rather than two 90° elbows.

12 " Min To

Roof Or

Highest Anticipated

Snow Level

TEE

Vertical Termination (Single Pipe)

12" MIN.

TO ROOF OR

HIGHEST

ANTICIPATED

SNOW LEVEL

90º

MEDIUM RADIUS

ELBOWS

Alternate Vertical Termination (Single Pipe)

MIN.

12"

FROM

WALL 12"

TO GROUND OR

HIGHEST ANTICIPATED

SNOW LEVEL

WALL

INSIDE OUTSIDE

TEE

90°ELBOW

TURNED

DOWN

COUPLING

ELBOW OR

COUPLING

Horizontal Termination (Single Pipe)

VENT/FLUE TEE

90° ELBOW TURNED

DOWN

12" MIN. ABOVE

HIGHEST ANTICIPATED

SNOW LEVEL

12" MIN.

Horizontal Termination (Single Pipe)

Above Highest Anticipated Snow Level

DIRECT VENT (DUAL PIPE) PIPING

The inlet air screens provided in the installation instruction packet

are available for the installer to use in the inlet of the combustion

air pipe to prevent animals from building nests in the combustion

air pipe. Installation of screens, while strongly recommended, is

not required and will not affect performance of the unit.

Although non-direct vent installations do not require a combustion

air intake pipe, a minimum of one 90° elbow should be attached to

the furnace’s combustion air intake if: an upright installation uses

the standard intake location, or a horizontal installation uses the

alternate air intake location. This elbow will guard against inad-

vertent blockage of the air intake.

VENT/FLUE PIPE LENGTHS AND DIAMETERS

Refer to the following table for applicable length, elbows, and pipe

diameter for construction of the vent/flue pipe system of a non-

direct vent installation. In addition to the vent/flue pipe, a single

90° elbow should be secured to the combustion air intake to pre-

vent inadvertent blockage. The tee used in the vent/flue termina-

tion must be included when determining the number of elbows in

the piping system.

12345678

45,000 2 7168656259565350

2 4946434037343128

3 7168656259565350

90,000 3 7168656259565350

115,000 3 49 46 43 40 37 34 31 28

12345678

2 6158555249464340

3 7168656259565350

2 6158555249464340

3 7168656259565350

70,000

90,000

COUNTERFLOW

Non-Direct Vent (Single Pipe)

Maximum Allowable Length of Vent/Flue Pipe (ft)(1)(2)

Unit Input Pipe(4)

(inch) Number of Elbows(3)(5)

UPFLOW

Non-Direct Vent (Single Pipe)

Maximum Allowable Length of Vent/Flue Pipe (ft)(1)(2)

Number of Elbows(3)(5)

Pipe(4)

(inch)

Unit Input

1) One 90° elbow should be secured to the combustion air intake con-

nection.

2) Minimum requirement for each vent pipe is five (5) feet in length and

one elbow/tee.

3) Tee used in the vent/flue termination must be included when determin-

ing the number of elbows in the piping system.

4) 3” diameter pipe can be used in place of 2” diameter pipe.

5) Increased Clearance Configurations using (2) 45 deg. Long Sweep

elbows should be considered equivalent to one 90 deg. elbow.

VENT/FLUE PIPE TERMINATIONS

The vent/flue pipe may terminate vertically, as through a roof, or

horizontally, as through an outside wall.

Vertical vent/flue pipe terminations should be as shown in the fol-

lowing figure. Refer to Section IX, Vent/Flue Pipe and Combustion

Air Pipe - Termination Locations for details concerning location re-

strictions. The penetration of the vent through the roof must be

sealedtightwithproper flashing suchasisusedwith aplasticplumb-

ing vent.

Horizontal vent/flue pipe terminations should be as shown in the

following figure. Refer to Section IX, Vent/Flue Pipe and Combus-

tion Air Pipe - Termination Locations for details concerning loca-

tion restrictions. A 2 3/8” diameter wall penetration is required for

2” diameter pipe while a 3 1/2” diameter hole is required for 3”

diameter pipe. To secure the pipe passing through the wall and

prohibit damage to piping connections, a coupling should be in-

Direct vent installations require both a combustion air intake and a

vent/flue pipe. The pipes may be run horizontally and exit through

the side of the building or run vertically and exit through the roof of

the building. The pipes may be run through an existing unused

chimney;however,they must extend a minimum of 12 inches above

the top of the chimney. The space between the pipes and the chim-

ney must be closed with a weather tight, corrosion resistant flash-

ing. Both the combustion air intake and a vent/flue pipe termina-

tions must be in the same atmospheric pressure zone. Refer to

Section IX, Vent/Flue and Combustion Air Pipe - Termination Loca-

tions or Concentric Vent Termination for specific details on termina-

tion construction. For details concerning connection of pipes to the

furnace, refer to the Section IX, Vent/Flue Pipe and Combustion

Pipe - Standard Furnace Connections or Alternate Furnace Con-

nections.

VENT/FLUE AND COMBUSTION AIR PIPE LENGTHS AND DIAMETERS

Refer to the following table for applicable length, elbows, and pipe

diameter for construction of the vent/flue and combustion air intake

pipe systems of a direct vent (dual pipe) installation. The number of

elbows tabulated represents the number of elbows and/or tees in

each (Vent/Flue & CombustionAir Intake) pipe. Elbows and/or tees

used in the terminations must be included when determining the

number of elbows in the piping systems.

If the combustion air intake pipe is to be installed above a finished

ceiling or other area where dripping of condensate will be objection-

able, insulation of the combustion air pipe may be required. Use

1/2” thick closed cell foam insulation such as Armaflex™ or Insul-

tube™ where required.

12345678

Standard 2 7168656259565350

Alternate 2 58 55 52 49 46 43 40 37

2 4946434037343128

3 7168656259565350

2 3633302724211815

3 5754514845423936

Standard 3 7168656259565350

Alternate 3 57 54 51 48 45 42 39 36

Standard 3 4946434037343128

Alternate 3 35 32 29 26 23 20 17 14

12345678

2 4946434037343128

3 7168656259565350

2 3633302724211815

3 5754514845423936

2 6158555249464340

3 7168656259565350

2 4845423936333027

3 5754514845423936

90,000 Standard

Alternate

70,000 Standard

Alternate

COUNTERFLOW

Direct Vent (Dual Pipe) Maximum Allow able Length

of Vent/Flue &Combustion Air Intake Pipe (ft)

Unit Input

(Btu) Termination

Style Pipe(4)

(inch) Number of Elbow s(1)(2)(3)(5)

45,000

90,000

115,000

Termination

Style

70,000 Standard

Alternate

UPFLOW

Direct Vent (Dual Pipe) Maximum Allow able Length

of Vent/Flue &Combustion Air Intake Pipe (ft)

Number of Elbows(1)(2)(3)(5)

Pipe(4)

(inch)

Unit Input

(Btu)

1) Elbows and/or tees used in terminations must be included when deter-

mining quantity of allowable elbows in the system.

2) Number of elbows tabulated are for each (Vent/Flue & Combustion Air

Intake) pipe.

3) Minimum requirements for each Vent/Flue & CombustionAir Intake pipe

is five (5) feet in length and one elbow/tee.

4) 3” diameter pipe can be used in place of 2” diameter pipe.

5) Increased Clearance Configurations using (2) 45 deg. Long Sweep el-

bows should be considered equivalent to one 90 deg. elbow.

VENT/FLUE AND COMBUSTION AIR PIPE TERMINATIONS

The vent/flue and combustion air pipes may terminate vertically, as

through a roof, or horizontally, as through an outside wall.

Vertical pipe terminations should be as shown in the following fig-

ure. Refer to Section IX, Vent/Flue Pipe and Combustion Pipe -

Termination Locations for details concerning location restrictions.

The penetrations through the roof must be sealed tight with proper

flashing such as is used with a plastic plumbing vent.

12" MIN.

TO ROOF OR

HIGHEST

ANTICIPATED

SNOW LEVEL

VENT/FLUE

COMBUSTION

AIR INTAKE

SCREEN

Vertical Terminations (Dual Pipe)

Horizontal terminations should be as shown in the following figure.

Refer to Section IX, Vent/Flue Pipe and Combustion Pipe - Termi-

nation Location for location restrictions. A 2 3/8 inch diameter wall

penetration is required for 2” diameter pipe while a 3 1/2 inch diam-

eter hole is required for 3” diameter pipe. To secure the pipe pass-

ing through the wall and prohibit damage to piping connections, a

coupling should be installed on either side of the wall and solvent

cemented to a pipe connecting the two couplings. The pipe length

should be the wall thickness plus the depth of the socket fittings to

be installed on the inside and outside of the wall. The wall penetra-

tion should be sealed with silicone caulking material.

12" MIN

3" MIN

24" MAX

3" MIN

24" MAX

12" MIN.

TO ROOF OR

HIGHEST

ANTICIPATED

SNOW LEVEL

12" MIN.

TO ROOF OR

HIGHEST

ANTICIPATED

SNOW LEVEL

Standard Horizontal Terminations (Dual Pipe)

24" MAX

3" MIN

24" MAX

AIR

INTAKE

90°

MEDIUM

RADIUS

ELBOW

12" MIN. ABOVE

HIGHESTANTICIPATED

SNOW LEVEL

Alternate Horizontal Vent Termination (Dual Pipe)

SUPPORT

STRAPS

12" MIN.

ENT/FLUE

TEE

SCREEN

COMBUSTION

AIR INTAKE.

12" MIN.ABOVE

HIGHEST ANTICIPATED

SNOW LEVEL

12" MIN. ABOVE

HIGHEST ANTICIPATED

SNOW LEVEL

3" MIN.

24" MAX.

12" MIN

Standard Horizontal Terminations Above Anticipated Snow

Level (Dual Pipe)

Alternate Vent Termination Above Anticipated Snow Level

(Dual Pipe)

In a basement installation, the pipes may be run between the joist

spaces. If the pipes must go below the joist and then up into the last

joist space to penetrate the header, two 45° elbows should be used

to reach the header rather than two 90° elbows.

VENT/INTAKE TERMINATIONS FOR INSTALLATION OF MULTIPLE

DIRECT VENT FURNACES

Ifmorethanone direct ventfurnaceistobeinstalledverticallythrough

a common roof top, maintain the same minimum clearances be-

tween the exhaust vent and air intake terminations of adjacent units

as with the exhaust vent and air intake terminations of a single unit.

If more than one direct vent furnace is to be installed horizontally

through a common side wall, maintain the clearances as in the fol-

lowing figure.Always terminate all exhaust vent outlets at the same

elevation and always terminate all air intakes at the same elevation.

ents

24" Max.

3" Min.

12" Min. Screen

24" Max.

90°

Medium

Radius

Elbows

24" Max.

3" Min.

12" MIN. ABOVE

HIGHESTANTICIPATED

SNOW LEVEL

Horizontal Venting Of Multiple Units

CONCENTRIC VENT TERMINATION

Refer to the directions provided with the Concentric Vent Kit (DCVK)

for installation specifications.

X. COX. CO

X. CONDND

NDND

NDENSAENSA

ENSAENSA

ENSATE DRAIN LINES & DRAIN TRAPTE DRAIN LINES & DRAIN TRAP

TE DRAIN LINES & DRAIN TRAPTE DRAIN LINES & DRAIN TRAP

TE DRAIN LINES & DRAIN TRAP

GENERAL

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. The

condensate which is generated must be piped to an appropriate

drain location.

In upright installations, the furnace’s drain hoses may exit either the

right or left side of the furnace. NOTE: If the alternate vent/flue

outlet is utilized in an upright installation, the drain trap and drain

connections must be located on the same side as the alternate

vent/flue outlet.

In horizontal installations, the drain hoses will exit through the bot-

tom (down side) of the unit with the drain trap suspended beneath

the furnace. The field-supplied drain system must be in accordance

with all local codes and the instructions in the following sections.

WARNING

IN UPRIGHT UPFLOW INSTALLATIONS, THE DRAIN TRAP MUST BE MOUNTED ON

THE OPPOSITE SIDE OF THE UNIT FROM THE JUNCTION BOX. THIS WILL

REDUCE THE RISK OF WATER REACHING THE JUNCTION BOX IN THE EVENT OF

A BLOCKED DRAIN CONDITION. FAILURE TO FOLLOW THESE INSTRUCTIONS

CAN RESULT IN POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH

DUE TO ELECTRICAL SHOCK.

Followthebullets listed belowwheninstallingthe drainsystem. Refer

tothe following sections for specific details concerning furnace drain

trap installation and drain hose hook ups.

• The drain trap supplied with the furnace must be used.

• The drain line between furnace and drain location must

be constructed of 3/4” PVC or CPVC.

• The drain line between furnace and drain location must

maintain a 1/4 inch per foot downward slope toward the

drain.

• Do not trap the drain line in any other location than at

the drain trap supplied with the furnace.

• Do not route the drain line outside where it may freeze.

• If the drain line is routed through an area which may see

temperatures near or below freezing, precautions must

be taken to prevent condensate from freezing within the

drain line.

• If an air conditioning coil is installed with the furnace, a

common drain may be used. An open tee must be

installed in the drain line, near the cooling coil, to relieve

positive air pressure from the coil’s plenum. This is

necessary to prohibit any interference with the function

of the furnace’s drain trap.

UPRIGHT INSTALLATIONS

In an upright installation drain hoses are connected to drain ports

on the rubber elbow and the recuperator coil front cover. The drain

lines are then routed through the right or left side panel and into the

drain trap secured to the outside of the cabinet.

NOTE: Refer to Section X, Condensate Drain Lines and Drain Trap

- Alternate Vent/Flue Hose Connections for upright installations us-

ing an alternate vent/flue outlet.

STANDARD RIGHT OR LEFT SIDE DRAIN HOSE CONNECTIONS

Upright installations using the standard vent/flue outlet require drain

hoses to be connected as follows. The following quantity of hoses,

tubes, and hose clamps are provided with the unit.

HOSE A

QTY: 1

HOSE B

QTY: 1

TUBE 1

QTY: 1

RED

TUBE 2

QTY: 2

HOSE CLAMPS

: 2

GREEN

HOSE CLAMPS

: 3

Hose and Tube Identification

1. Remove the rubber plug from the front cover drain port (right

or left side, depending on the intended drain trap mounting).

2. SecureHoseAto front coverdrainportwithared hose clamp.

Route hose to rear side panel grommet hole.

NOTE: For left side drainage, grommets will have to be relocated to

left side panel.

DRAIN

TRAP

FRONT COVER

DRAIN PORT

TUBE(S) 2

GREEN

HOSE

CLAMPS

(

3 PLACES

)

RIGHT SIDE

PANEL

RUBBER ELBOW

DRAIN PORT

TUBE 1

SIDE PANEL

GROMMET

HOLES

HOSE

RUBBER

ELBOW

RED HOSE

CLAMP

RED HOSE CLAMP

Upright “Standard” Connections - Right Side

(Upflow Shown, Counterflow Similar)

LEFT

SIDE PANEL

FRONT COVER

DRAIN PORT

HOSE A

SIDE PANEL

DRAIN

HOLES

TUBE(S) 2

DRAIN

TRAP

GREEN HOSE

CLAMPS

(3 PLACES)

TUBE 1

RUBBER

ELBOW

HOSE B

RUBBER

ELBOW

DRAIN PORT

RED HOSE

CLAMP

RED HOSE

CLAMP

Upright “Standard” Connections - Left Side

(Upflow Shown, Counterflow Similar)

3. Cut and remove 1/4 inch from the end of the drain port on

the rubber elbow.

4. Insert Tube 1 into rubber elbow drain port and secure with

red hose clamp. Angle tube outward toward front of furnace.

5. Right side drains

Cut 17 3/4 inches from the long end of Hose B and discard.

Secure the remaining hose to Tube 1 with a green hose

clamp. Route the other end of Hose B to front right side

panel grommet hole.

Left side drains

Cut “X” inches from the long end of Hose B and discard.

Refertotable for appropriate length to cut. Secureremaining

hose to Tube 1 with a green hose clamp. Route other end of

Hose B to front left side panel grommet hole.

6. Insert short end of each Tube 2 through side panel grommet

holes. Secure tubes to HoseAand Hose B with green hose

clamps. Ensurehoses and tubes maintain a downward slope

for proper drainage and that they are not kinked or binding.

For details concerning mounting of the drain trap, refer to Section

X, Condensate Drain Lines and Drain Trap - Upright Drain Trap

Mounting.

ALTERNATE VENT/FLUE DRAIN HOSE CONNECTIONS

Upright installations using the alternate vent/flue outlet will require

“right-side only” drain hoses to be connected as follows. Refer to

Section IX, Vent/Flue Pipe and Combustion Air Pipe for details on

alternate vent/flue pipe connection.

1. Remove the rubber plug from the front cover right-side drain

port. Save for use in step 3.

2. SecureHoseAto front coverdrainportwithared hose clamp.

Route hose to rear right side panel grommet hole.

3. Remove grommet fromfrontright-sidepaneldrain hole. Seal

hole in grommet with large end of plug. Reinstall grommet

and plug into side panel drain hole.

4. Cut 1/4 inch from the end of the drain port on the externally

mounted rubber elbow. Discard cut portion.

5. Insert Tube 1 into rubber elbow drain port and secure with a

red hose clamp. Angle tube outward toward front of furnace.

6. Cut 17 7/8 inches from the long end of Hose B and discard.

7. Secure remaining end of Hose B to exposed end of Tube 1

withagreenhoseclamp. Routehosetowardrightsidepanel

grommet holes.

8. Insert short end of one Tube 2 through rear right side panel

grommet drain hole. Secure tube to Hose A with a green

hose clamp.

9. InsertshortendofremainingTube2into Hose B from rubber

elbow and secure with green hose clamp. Ensure hoses

and tubes maintain a downward slope for proper drainage

and are not kinked or binding.

CabinetWidth

(inches) Models

(kBTU_Tons) "X" Length to CutFrom Long

End of Hose B

17 1/2 45__30 7 inches

21 70__40 3 1/2 inches

090__50

115__50

CabinetWidth

(inches) Models

(kBTU_Tons) "X" Length to CutFrom Long

End of Hose B

17 1/2 45__30 18 5/8 inches

21 70__40 14 1/2 inches

090__50

115__50

24 1/2 None

24 1/2 11 1/4 inches

RUBBER ELBOW

(EXTERNALLY

MOUNTED)

TUBE 1 GREEN HOSE

CLAMPS

(3 PLACES)

HOSE B

TUBE(S) 2 DRAIN TRAP

SIDE PANEL

GROMMET

HOLES

HOSE A

FRONT COVER

DRAIN PORT

RUBBER

ELBOW

DRAIN PORT

RED HOSE

CLAMP

RED HOSE CLAMP

Upright “Alternate” Connections - Right Side Only

(Upflow Shown, Counterflow Similar)

For details concerning mounting of the drain trap, refer to the fol-

lowing section.

UPRIGHT DRAIN TRAP MOUNTING (LEFT OR RIGHT SIDE PANEL)

1. Insert drain tubes into drain trap and position the drain trap

against the side panel. NOTE: Drain tubes must reach the

bottom of the drain trap.

2. Securedraintrapto side panelatthe mountingholes(dimples

or crosshairs on counterflow models) located below the

grommet drain holes.

3. Attach PVC drain line to drain trap outlet with either a 90°

elbow or coupling.

HORIZONTAL INSTALLATIONS

RIGHT SIDE DOWN

Horizontalinstallationswiththerightsidedownrequirethatthedrain

hoses be connected to the right side front cover drain port and the

rubber elbow drain port.

NOTE: Oncounterflowmodels,relocation of thefrontcoverpressure

switch hose is required.

Make connections as follows:

1. Remove the rubber plug from the coil front cover drain port.

Counterflow furnaces

Relocate the front cover pressure switch hose connection

from the left side pressure tap to the right (down) side tap.

The pressure switch hose must be connected to the down

side to guard against blocked drain conditions. Cut hose to

appropriate length to minimize sagging. Plug left (unused)

pressure tap with plug removed from right side.

2. SecureHoseAto front cover drain tapwitharedhoseclamp.

Route hose to rear right (down) side panel grommet holes.

3. Cut 1/4 inch from the end of the drain port on the rubber

elbow and discard.

4. Insert Tube 1 into rubber elbow drain port and secure with a

red hose clamp.Angle tube outward toward front of furnace.

5. Cut 17 3/4 inches from the long end of Hose B and discard.

6. Secure remaining end of Hose B to exposed end of Tube 1

with a green hose clamp. Route hose to front right down

side panel grommet holes.

7. Cut 5 1/2 inches straight length from the long end of each

Tube 2.

HOSE A

HOSE B

SIDE PANEL

GROMMET

HOLES

GREEN

HOSE

CLAMP

(3 PLACES)

TUBE 1

RUBBER

ELBOW

RIGHT

SIDE

PANEL

DRAIN TRAP

TUBES 2 RUBBER ELBOW

DRAIN PORT

FRONT COVER

DRAIN PORT

FRONT

COVER

PRESSURE

TAP

RED HOSE

CLAMP

RED HOSE

CLAMP

Horizontal Connections - Right Side Down

(Upflow Shown, Counterflow Similar)

8. Insert approximately one inch of each Tube 2 through the

right down side panel grommet holes. Secure tubes to Hose

Aand Hose B using green hose clamps. Ensure hoses and

tubes maintain a downward slope for proper drainage and

are not kinked or bound.

For details concerning mounting of the drain trap, refer to Section

X, Condensate Drain Lines and Drain Trap - Upright Drain Trap

Mounting.

LEFT SIDE DOWN

Horizontalinstallationswiththeleftsidepaneldownwillrequiredrain

hoses to be connected to the left side front cover drain port and the

side drain port on the rubber elbow.

1. Remove the rubber plug from the coil front cover left (down)

side drain port.

2. Relocate the front cover pressure switch hose connection

fromtherightside(asshipped)pressure taptotheleft(down)

side tap. The pressure switch hose must be connected to

the down side to guard against blocked drain conditions.

Cut hose to appropriate length to minimize sagging. Plug

right (unused) pressure tap with plug removed from left side.

3. SecureHoseAto front coverdrainportwithared hose clamp.

Route hose to rear left (down) side panel grommet holes.

NOTE: For left side drainage, grommets must be relocated

to left side panel.

LEFT SIDE

PANEL FRONT COVER

DRAIN PORT

SIDE PANEL

GROMMET

HOLES

DRAIN TRAP

TUBE(S) 2

GREEN HOSE

CLAMPS

(3 PLACES)

HOSE A

HOSE B

INDUCED

DRAFT BLOWER

DRAIN PORT

FRONT

COVER

PRESSURE

TAP

RED HOSE CLAMP

Horizontal Connections - Left Side Down

(Upflow Shown, Counterflow Similar)

4. Removetherubbercapfromthesidedrainport on the rubber

elbow.

5. Secure the short end of Hose B to rubber elbow side drain

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