Goodman Mfg Co Lp Furnace Gas Fired Warm Air Users Manual

GAS-FIRED WARM AIR FURNACE to the manual e271dcec-018f-48b3-97ec-97efb66f6c17

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INSTALLATION INSTRUCTIONS

*MH95/ACSH96/AMEH96/

GCH95/GME95/GCH9

G

AS

-F

IRED

W

ARM

A

IR

F

URNACE

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.

These furnaces comply with requirements

embodied in the American National Stan-

dard / National Standard of Canada ANSI

Z21.47·CSA-2.3 Gas Fired Central Fur-

naces.

NOTE: Please contact your distributor or our website

for the applicable Specification Sheet referred to in this manual.

Goodman Manufacturing Company, L.P.

5151 San Felipe, Suite 500, Houston, TX 77056

www.goodmanmfg.com or www.amana-hac.com

© 2006-2013 Goodman Manufacturing Company, L.P.

IO-299R

5/2013

2

Table of Contents

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

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

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS .................................................................................................. 7

III. Product Application ...................................................................................................................................................... 7

IV. Location Requirements & Considerations................................................................................................................. 8

GENERAL ......................................................................................................................................................... 8

CLEARANCES AND ACCESSIBILITY ........................................................................................................................... 9

FURNACE SUSPENSION ........................................................................................................................................ 9

EXISTING FURNACE REMOVAL .............................................................................................................................. 9

THERMOSTAT LOCATION ..................................................................................................................................... 10

V. Combustion & Ventilation Air Requirements ............................................................................................................. 10

VI. Installation Positions .................................................................................................................................................. 12

VII. Horizontal Applications & Considerations ............................................................................................................... 12

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

DRAIN TRAP AND LINES .................................................................................................................................... 12

LEVELING ....................................................................................................................................................... 12

ALTERNATE VENT/FLUE AND COMBUSTION AIR CONNECTIONS .................................................................................... 12

ALTERNATE ELECTRICAL AND GAS LINE CONNECTIONS ............................................................................................ 13

DRAIN PAN ..................................................................................................................................................... 13

FREEZE PROTECTION ........................................................................................................................................ 13

FURNACE SUSPENSION ...................................................................................................................................... 13

VIII. Propane Gas /High Altitude Installations ............................................................................................................... 13

IX. Vent/Flue Pipe & Combustion Air Pipe ..................................................................................................................... 15

GENERAL ....................................................................................................................................................... 15

DUAL CERTIFICATION: NON-DIRECT/DIRECT VENT ................................................................................................... 15

MATERIALS AND JOINING METHODS ..................................................................................................................... 15

PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES ................................................................................. 15

TERMINATION LOCATIONS ................................................................................................................................... 16

CANADIAN VENTING REQUIREMENTS ..................................................................................................................... 16

STANDARD FURNACE CONNECTIONS ..................................................................................................................... 16

ALTERNATE FURNACE CONNECTIONS ..................................................................................................................... 17

NON-DIRECT VENT (SINGLE PIPE) PIPING ............................................................................................................ 18

DIRECT VENT (DUAL PIPE) PIPING ...................................................................................................................... 19

VENT/INTAKE TERMINATIONS FOR INSTALLATION OF MULTIPLE DIRECT VENT FURNACES .................................................. 20

CONCENTRIC VENT TERMINATION ......................................................................................................................... 20

SIDE WALL VENT KIT........................................................................................................................................ 20

X. Condensate Drain Lines & Drain Trap ........................................................................................................................ 20

STANDARD RIGHT OR LEFT SIDE DRAIN HOSE CONNECTIONS .................................................................................. 21

ALTERNATE VENT/FLUE DRAIN HOSE CONNECTIONS.................................................................................................22

UPRIGHT INSTALLATIONS-TRAP ON LEFT SIDE..........................................................................................................23

HORIZONTAL INSTALLATIONS .............................................................................................................................. 24

XI. Electrical Connections ................................................................................................................................................ 26

WIRING HARNESS ............................................................................................................................................ 26

115 VOLT LINE CONNECTIONS ............................................................................................................................ 26

JUNCTION BOX RELOCATION ............................................................................................................................... 26

24 VOLT THERMOSTAT WIRING .......................................................................................................................... 27

GME95/AMEH96 FURNACE WITH 2-STAGE CONDENSER FIELD WIRING ................................................................. 27

115 VOLT LINE CONNECTION OF ACCESSORIES (ELECTRONIC AIR CLEANER) ........................................................... 27

24 VOLT HUMIDIFIER ........................................................................................................................................ 28

XII. Gas Supply and Piping ............................................................................................................................................... 28

GENERAL ........................................................................................................................................................ 28

GAS PIPING CONNECTIONS................................................................................................................................28

PROPANE GAS TANKS AND PIPING...................................................................................................................... 31

XIII. Circulating Air & Filters ............................................................................................................................................. 31

DUCTWORK - AIR FLOW ................................................................................................................................... 31

CHECKING DUCT STATIC ................................................................................................................................... 32

BOTTOM RETURN AIR OPENING [UPFLOW MODELS].............................................................................................. 32

FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCTWORK ..................................................... 32

UPRIGHT INSTALLATIONS ................................................................................................................................... 33

HORIZONTAL INSTALLATIONS .............................................................................................................................. 33

3

WARNING

GOODMAN WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY

DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES.

IF YOU INSTALL OR PERFORM SERVICE ON THIS UNIT, YOU ASSUME

RESPONSIBILITY FOR ANY PERSONAL INJURY OR PROPERY DAMAGE WHICH

MAY RESULT. MANY JURISDICTIONS REQUIRE A LICENSE TO INSTALL OR

SERVICE HEATING AND AIR CONDITIONING EQUIPMENT.

Table of Contents

XIV. Startup Procedure & Adjustment ............................................................................................................................. 33

HEAT ANTICIPATOR SETTING .............................................................................................................................. 33

DRAIN TRAP PRIMING ....................................................................................................................................... 33

FURNACE OPERATION ........................................................................................................................................ 33

GAS SUPPLY PRESSURE MEASUREMENT .............................................................................................................. 34

GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT.................................................................................. 35

GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) ........................................................................................ 35

TEMPERATURE RISE .......................................................................................................................................... 36

CIRCULATOR BLOWER SPEEDS ........................................................................................................................... 36

CIRCULATOR BLOWER FAN TIMING ADJUSTMENT .................................................................................................. 37

SETTING FURNACE OPERATING MODE .................................................................................................................. 37

XV. Normal Sequence of Operation ................................................................................................................................. 37

POWER UP..................................................................................................................................................... 37

HEATING MODE ............................................................................................................................................... 37

(MODE DIP SWITCH IS SET TO “1 STG” POSITION).............................................................................................. 37

(MODE DIP SWITCH IS SET TO “2 STG” POSITION) ............................................................................................. 38

COOLING MODE ............................................................................................................................................... 38

FAN ONLY MODE ............................................................................................................................................. 38

XVI. Operational Checks .................................................................................................................................................. 38

BURNER FLAME ............................................................................................................................................... 38

XVII. Safety Circuit Description ....................................................................................................................................... 38

GENERAL ........................................................................................................................................................ 38

INTEGRATED CONTROL MODULE .......................................................................................................................... 38

PRIMARY LIMIT ................................................................................................................................................ 39

AUXILIARY LIMIT .............................................................................................................................................. 39

ROLLOUT LIMIT ............................................................................................................................................... 39

PRESSURE SWITCHES ....................................................................................................................................... 39

FLAME SENSOR ............................................................................................................................................... 39

XVIII. Troubleshooting ...................................................................................................................................................... 39

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................................................................................................ 39

DIAGNOSTIC CHART ......................................................................................................................................... 39

FAULT RECALL ................................................................................................................................................ 39

RESETTING FROM LOCKOUT .............................................................................................................................. 39

XIX. Maintenance .............................................................................................................................................................. 40

ANNUAL INSPECTION ......................................................................................................................................... 40

FILTERS.......................................................................................................................................................... 40

BURNERS........................................................................................................................................................ 40

INDUCED DRAFT AND CIRCULATOR BLOWERS ........................................................................................................ 40

CONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER ONLY)...................................................................... 40

FLAME SENSOR (QUALIFIED SERVICER ONLY)....................................................................................................... 40

IGNITER (QUALIFIED SERVICER ONLY).................................................................................................................. 40

FLUE PASSAGES (QUALIFIED SERVICER ONLY) ..................................................................................................... 40

XX. Before Leaving an Installation................................................................................................................................... 41

XXI. Repair & Replacement Parts .................................................................................................................................... 41

Troubleshooting Chart ..................................................................................................................................................... 42

Blower Performance Data ................................................................................................................................................ 44

Wiring Diagram ................................................................................................................................................................. 49

Special Instructions for Products Installed in the State of Massachusetts .................................................................. 52

4

I

F

THE

INFORMATION

IN

THESE

INSTRUCTIONS

IS

NOT

FOLLOWED

EXACTLY

,

A

FIRE

OR

EXPLOSION

MAY

RESULT

CAUSING

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

LOSS

OF

LIFE

.

- D

O

NOT

STORE

OR

USE

GASOLINE

OR

OTHER

FLAMMABLE

VAPORS

AND

LIQUIDS

IN

THE

VICINITY

OF

THIS

OR

ANY

OTHER

APPLIANCE

.

- WHAT TO DO IF YOU SMELL GAS:

* D

O

NOT

TRY

TO

LIGHT

ANY

APPLIANCE

.

* D

O

NOT

TOUCH

ANY

ELECTRICAL

SWITCH

;

DO

NOT

USE

ANY

PHONE

IN

YOUR

BUILDING

.

* I

MMEDIATELY

CALL

YOUR

GAS

SUPPLIER

FROM

A

NEIGHBORS

PHONE

. F

OLLOW

THE

GAS

SUPPLIERS

INSTRUCTIONS

.

* I

F

YOU

CANNOT

READCH

YOUR

GAS

SUPPLIER

,

CALL

THE

FIRE

DEPARTMENT

.

- I

NSTALLATION

AND

SERVICE

MUST

BE

PERFORMED

BY

A

QUALIFIED

INSTALLER

,

SERVICE

AGENCY

OR

THE

GAS

SUPPLIER

WARNING

S

HOULD

OVERHEATING

OCCUR

OR

THE

GAS

SUPPLY

FAIL

TO

SHUT

OFF

,

TURN

OFF

THE

MANUAL

GAS

SHUTOFF

VALVE

EXTERNAL

TO

THE

FURNACE

BEFORE

TURNING

OFF

THE

ELECTRICAL

SUPPLY

.

WARNING

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

TO THE INSTALLER

Before installing this unit, please read this manual thoroughly to

familiarize yourself with specific items which must be adhered to,

including but not limited to: unit maximum external static pressure,

gas pressures, BTU input rating, proper electrical connections, cir-

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

tor speed connections.

SHIPPING I NSPECTION

All units are securely packed in shipping containers tested according to

International Safe Transit Association specifications. The carton must be

checked upon arrival for external damage. If damage is found, a request

for inspection by carrier’s agent must be made in writing immediately.

The furnace must be carefully inspected on arrival for damage and bolts

or screws which may have come loose in transit. In the event of damage

the consignee should:

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

shipment or container.

2. Notify carrier promptly and request an inspection.

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

possible - preferably within five days.

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

nine month statute of limitations.

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

bond.

•Original paid freight bill or indemnity in lieu thereof.

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

other discounts or reductions.

•Copy of the inspection report issued by carrier’s

representative at the time damage is reported to carrier.

The carrier is responsible for making prompt inspection of damage

and for a thorough investigation of each claim. The distributor or manu-

facturer will not accept claims from dealers for transportation dam-

age.

Keep this literature in a safe place for future reference.

5

I. COMPONENT IDENTIFICATION

1 Gas Valve

2 Gas Line Entrance (Alternate)

3 Pressure Switch

4 Gas Manifold

5 Combustion Air Intake Connection / “Coupling”

6 Hot Surface Igniter

7 Rollout Limit

8 Burners

9 Flame Sensor

10 Flue Pipe Connection / “Coupling”

11 Flue Pipe (Internal)

12 Primary Limit

13 Gas Line Entrance

14 Flue Pipe Connection (Alternate)

15 Rubber Elbow

16 Induced Draft Blower

17 Electrical Connection Inlets (Alternate)

18 Coil Front Cover Pressure Tap

19 Coil Front Cover Drain Port

20 Drain Line Penetrations

21 Drain Trap

22 Blower Door Interlock Switch

23 Capacitor

24 Integrated Control Module

(with fuse and diagnostic LED)

25 24-Volt Thermostat Connections

26 Transformer (40 VA)

27 Circulator Blower

28 Auxiliary Limit

29 Junction Box

30 Electrical Connection Inlets

31 Coil Front Cover

Upflow/Horizontal Counterflow/Horizontal

1

97874

6

12

13

21

20

19

18

3

24

23

25

526 27 10

28

3

15 14

16

18 19

2

11

17

30

29

31

BLOWER COMPARTMENT BURNER COMPARTMENT

*

*

*

*

*

*

*

*

*

6

T

HIS



PRODUCT



CONTAINS



OR



PRODUCES



A



CHEMICAL



OR



CHEMICALS



WHICH



MAY



CAUSE



SERIOUS



ILLNESS



OR



DEATH



AND



WHICH



ARE



KNOWN



TO



THE

S

TATE



OF

C

ALIFORNIA



TO



CAUSE



CANCER

,

BIRTH



DEFECTS



OR



OTHER



REPRODUCTIVE



HARM

.

WARNING

H

EATING



UNIT



SHOULD



NOT



BE



UTILIZED



WITHOUT



REASONABLE

,

ROUTINE

,

INSPECTION

,

MAINTENANCE



AND



SUPERVISION

.I

F



THE



BUILDING



IN



WHICH



ANY



SUCH



DEVICE



IS



LOCATED



WILL



BE



VACANT

,

CARE



SHOULD



BE



TAKEN



THAT



SUCH



DEVICE



IS



ROUTINELY



INSPECTED

,

MAINTAINED



AND



MONITORED

.

IN



THE



EVENT



THAT



THE



BUILDING



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

.

WARNING

T

O



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

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

II. SAFETY CONSIDERATIONS

Adhere to the following warnings and cautions when installing, adjust-

ing, altering, servicing, or operating the furnace. To ensure proper

installation and operation, thoroughly read this manual for specifics

pertaining to the installation and application of this product.

This furnace is manufactured for use with natural gas. It may be field

converted to operate on L.P. gas by using the appropriate L.P. conver-

sion kit listed in the PROPANE GAS/HIGH ALTITUDE INSTALLA-

TIONS section of this manual

Install this furnace only in a location and position as specified in LO-

CATION REQUIREMENTS & CONSIDERATIONS section and IN-

STALLATION POSITIONS section of this manual.

Provide adequate combustion and ventilation air to the furnace as

specified in COMBUSTION & VENTILATION AIR REQUIREMENTS

section of this manual.

Combustion products must be discharged to the outdoors. Connect

this furnace to an approved vent system only, as specified in VENT/

FLUE PIPE & COMBUSTION AIR PIPE section of this manual.

Never test for gas leaks with an open flame. Use a commercially avail-

able soap solution made specifically for the detection of leaks to check

all connections, as specified in GAS SUPPLY AND PIPING section of

this manual.

Always install a furnace to operate within the furnace’s intended tem-

perature-rise range with a duct system which has external static pres-

sure within the allowable range, as specified on the furnace rating plate

and OPERATIONAL CHECKS section of these instructions.

When a furnace is installed so that supply ducts carry air circulated

by the furnace to areas outside the space containing the furnace, the

return air shall also be handled by duct(s) sealed to the furnace casing

and terminating outside the space containing the furnace.

A gas-fired furnace for installation in a residential garage must be in-

stalled as specified in the LOCATION REQUIREMENTS AND CON-

SIDERATIONS section of this manual.

This furnace may be used as a construction site heater only if certain

conditions are met. These conditions are listed in the PRODUCT

APPLICATION section of this manual.

T

O



PREVENT



PERSONAL



INJURY



OR



DEATH



DUE



TO



IMPROPER



INSTALLATION

,

ADJUSTMENT

,

ALTERATION

,

SERVICE



OR



MAINTENANCE

,

REFER



TO



THIS



MANUAL

.F

OR



ADDITIONAL



ASSISTANCE



OR



INFORMATION

,

CONSULT



A



QUALIFIED



INSTALLER

,

SERVICER



AGENCY



OR



THE



GAS



SUPPLIER

.

WARNING

I

F



THE



INFORMATION



IN



THESE



INSTRUCTIONS



IS



NOT



FOLLOWED



EXACTLY

,

A



FIRE



OR



EXPLOSION



MAY



RESULT



CAUSING



PROPERTY

DAMAGE

,

PERSONAL



INJURY



OR



LOSS



OF



LIFE

.

D

O



NOT



STORE



OR



USE



GASOLINE



OR



OTHER



FLAMMABLE



VAPORS



AND



LIQUIDS



IN



THE



VICINITY



OF



THIS



OR



ANY



OTHER



APPLIANCE

.

D

O



NOT



TRY



TO



LIGHT



ANY



APPLIANCE

.

D

O



NOT



TOUCH



ANY



ELECTRICAL



SWITCH

;

DO



NOT



USE



ANY



PHONE



IN



YOUR



BUILDING

.

I

MMEDIATELY



CALL



YOUR



GAS



SUPPLIER



FROM



A



NEIGHBOR

’

S



PHONE

.F

OLLOW



THE



GAS



SUPPLIER

’

S



INSTRUCTIONS

.

I

F



YOU



CANNOT



REACH



YOUR



GAS



SUPPLIER

,

CALL



THE



FIRE



DEPARTMENT

.

I

NSTALLATION



AND



SERVICE



MUST



BE



PERFORMED



BY



A



QUALIFIED



INSTALLER

,

SERVICE



AGENCY



OR



THE



GAS



SUPPLIER

.

WHATTODOIFYOUSMELLGAS:









WARNING

7

• 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.

This furnace may be used as a construction site heater ONLY if the

following conditions are met:

• The vent system is permanently installed per these

installation instructions.

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

jumpers that provide continuous heating CANNOT be

used.

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

• A return air temperature range between 60ºF (16ºC) and

80ºF (27ºC) is maintained.

• Air filters are installed in the system and maintained

during construction, replaced as appropriate during

construction, and upon completion of construction are

replaced.

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

rating plate.

• 100% outside air is provided for combustion air

requirements during construction. Temporary ducting can

be used.

NOTE: Do not connect the temporary duct directly to the

furnace. The duct must be sized according to the

instructions under Section V, Combustion and Ventilation

Air Requirements, Section 5.3.3.

•The furnace heat exchanger, components, duct system,

air filters and evaporator coils are thoroughly cleaned

following final construction clean up.

• All furnace operating conditions (including ignition, input

rate, temperature rise and venting) are verified according

to these installation instructions.

NOTE: The Commonwealth of Massachusetts requires that the

following additional requirements must also be met:

• Gas furnaces must be installed by a licensed plumber or

gas fitter.

• A T-handle gas cock must be used.

• If the unit is to be installed in an attic, the passageway to

and the service area around the unit must have flooring.

To ensure proper installation and operation, thoroughly read this

manual for specifics pertaining to the installation and application

of this product.

S

HOULD



OVERHEATING



OCCUR



OR



THE



GAS



SUPPLY



FAIL



TO



SHUT



OFF

,

TURN



OFF



THE



MANUAL



GAS



SHUTOFF



VALVE



EXTERNAL



TO



THE



FURNACE



BEFORE



TURNING



OFF



THE



ELECTRICAL



SUPPLY

.

WARNING

P

OSSIBLE



PROPERTY



DAMAGE

,

PERSONAL



INJURY



OR



DEATH



DUE



TO



FIRE

,

EXPLOSION

,

SMOKE

,

SOOT

,

CONDENSATION

,

ELECTRICAL



SHOCK



OR



CARBON



MONOXIDE



MAY



RESULT



FROM



IMPROPER



INSTALLATION

,

REPAIR



OPERATION

,

OR



MAINTENANCE



OF



THIS



PRODUCT

.

WARNING

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

integrated control module or any wire connected to the control

prior to discharging your body’s electrostatic charge to

ground.

2. Firmly touch a clean, unpainted, metal surface of the

furnaces near the control. Any tools held in a person’s hand

during grounding will be discharged.

3. Service integrated control module or connecting wiring

following the discharge process in step 2. Use caution not

to recharge your body with static electricity; (i.e., do not move

or shuffle your feet, do not touch ungrounded objects, etc.).

If you come in contact with an ungrounded object, repeat

step 2 before touching control or wires.

4. Discharge your body to ground before removing a new

control from its container. Follow steps 1 through 3 if

installing the control on a furnace. Return any old or new

controls to their containers before touching any ungrounded

object.

III. PRODUCT APPLICATION

This furnace is primarily designed for residential home-heating

applications. It is NOT designed or certified for use in mobile

homes, trailers or recreational vehicles. This unit is NOT designed

or certified for outdoor applications. The furnace must be installed

indoors (i.e., attic space, crawl space, or garage area provided the

garage area is enclosed with an operating door).

This furnace can be used in the following non-industrial commer-

cial 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:

• It must be installed per the installation instructions

provided and per local and national codes.

• It must be installed indoors in a building constructed on

site.

• It must be part of a ducted system and not used in a free

air delivery application.

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

8

• 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 Vent/Flue Pipe and

Combustion Air Pipe -Termination Locations for appropriate

termination locations and to determine if the piping system

from furnace to termination can be accomplished within the

guidelines given. NOTE: The length of flue and/or

combustion air piping can be a limiting factor in the location

of the furnace.

• Locate the furnace so condensate flows downwards to the

drain. Do not locate the furnace or its condensate drainage

system in any area subject to below freezing temperatures

without proper freeze protection. Refer to Condensate Drain

Lines and Trap for further details.

• Ensure adequate combustion air is available for the furnace.

Improper or insufficient combustion air can expose building

occupants to gas combustion products that could include

carbon monoxide. Refer to Combustion and Ventilation Air

Requirements.

• Set the furnace on a level floor to enable proper condensate

drainage. If the floor becomes wet or damp at times, place

the furnace above the floor on a concrete base sized

approximately 1-1/2" larger than the base of the furnace.

Refer to the Horizontal Applications and Considerations for

leveling of horizontal furnaces.

• Ensure upflow or horizontal furnaces are not installed directly

on carpeting, or any other combustible material. The only

combustible material allowed is wood.

• A special accessory subbase must be used for upright

counterflow unit installations over any combustible

material (including wood). Refer to subbase instructions

for installation details. (NOTE: A subbase will not be

required if an air conditioning coil is located beneath the

furnace between the supply air opening and the

combustible floor.

• Exposure to contaminated combustion air will result in

safety and performance-related problems. Do not install

the furnace where the combustion air is exposed to the

following substances:

chlorinated waxes or cleaners

chlorine-based swimming pool chemicals

water softening chemicals

deicing salts or chemicals

carbon tetrachloride

halogen type refrigerants

cleaning solutions (such as perchloroethylene)

printing inks

paint removers

varnishes

hydrochloric acid

cements and glues

antistatic fabric softeners for clothes dryers

and masonry acid washing materials

P

OSSIBLE

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

DUE

TO

FIRE

,

EXPLOSION

,

SMOKE

,

SOOT

,

CONDENSATION

,

ELECTRICAL

SHOCK

OR

CARBON

MONOXIDE

MAY

RESULT

FROM

IMPROPER

INSTALLATION

,

REPAIR

,

OPERATION

,

OR

MAINTENANCE

OF

THIS

PRODUCT

.

WARNING

T

O

PREVENT

PERSONAL

INJURY

,

PROPERTY

DAMAGE

OR

DEATH

DUE

TO

FIRE

,

DO

NOT

INSTALL

THIS

FURNACE

IN

A

MOBILE

HOME

,

TRAILER

OR

RECREATIONAL

VEHICLE

.

WARNING

To ensure proper furnace operation, install, operate and maintain the

furnace in accordance with these installation and operation instruc-

tions, all local building codes and ordinances. In their absence, follow

the latest edition of the National Fuel Gas Code (NFPA 54/ANSI Z223.1),

and/or CAN/CSA B149.1-05.1-05 Installation Codes, local plumbing or

waste water codes, and other applicable codes.

A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1) can be

obtained from any of the following:

American National Standards Institute

1430 Broadway

New York, NY 10018

National Fire Protection Association

1 Batterymarch Park

Quincy, MA 02269

CSA International

8501 East Pleasant Valley

Cleveland, OH 44131

A copy of the CAN/CSA B149.1-05.1-05 Installation Codes can also

be obtained from:

CSA International

178 Rexdale Boulevard

Etobicoke, Ontario, Canada M9W 1R3

The rated heating capacity of the furnace should be greater than or

equal to the total heat loss of the area to be heated. The total heat

loss should be calculated by an approved method or in accor-

dance with “ASHRAE Guide” or “Manual J-Load Calculations” pub-

lished by the Air Conditioning Contractors of America.

IV. LOCATION REQUIREMENTS & CONSIDERATIONS

GENERAL

T

O

PREVENT

POSSIBLE

EQUIPMENT

DAMAGE

,

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

,

THE

FOLLOWING

BULLET

POINTS

MUST

BE

OBSERVED

WHEN

INSTALLING

THE

UNIT

.

WARNING

Follow the instructions listed below when selecting a furnace loca-

tion. Refer also to the guidelines provided in Combustion and

Ventilation Air Requirements.

• Centrally locate the furnace with respect to the proposed

or existing air distribution system.

• Ensure the temperature of the return air entering the

furnace is between 55°F and 100°F when the furnace is

heating.

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

9

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 de-

pend 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-Latest Edition, CSA-2.3b--Latest Edition

Section 1.23.1.

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

venting system placed in operation, while any other appliances connected

to the venting system are not in operation:

a. Seal any unused openings in the venting system;

b. Inspect the venting system for proper size and horizontal pitch, as

required by the National Fuel Gas Code, ANSI Z223.1 or the CSA

B149.1-05.1-05 Installation Codes and these instructions. Deter-

mine 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 sys-

tem. Turn on any exhaust fans, such as range hoods and bathroom

exhausts, so they shall operate at maximum speed. Do not operate a

summer exhaust fan. Close fireplace dampers;

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

in operation. Adjust thermostat so appliance shall operate continu-

ously;

e. Test for draft hood equipped spillage at the draft hood relief opening

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

or candle;

f. After it has been determined that each appliance connected to the

venting system properly vents when tested as outlined above, 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

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

05.1-05 Installation Codes.

• Seal off a non-direct vent furnace if it is installed near an

area frequently contaminated by any of the above substances.

This protects the non-direct vent furnace from airborne

contaminants. To ensure that the enclosed non-direct vent

furnace has an adequate supply of combustion air, vent from

a nearby uncontaminated room or from outdoors. Refer to

the 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.

For vertical (upflow or downflow) applications, the minimum

cooling coil width shall not be less than furnace width minus

1”. Additionally, a coil installed above an upflow furnace or

under a counterflow furnace may be the same width as the

furnace or may be one size larger than the furnace. Example:

a “C” width coil may be installed with a “B” width furnace.

For upflow applications, the front of the coil and furnace must

face the same direction.

• 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 A CCESSIBILITY

Installations must adhere to the clearances to combustible mate-

rials to which this furnace has been design certified. The mini-

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

clearance label. These clearances must be permanently main-

tained. Clearances must also accommodate an installation’s gas,

electrical, and drain trap and drain line connections. If the alternate

vent/flue connection is used, additional clearance must be pro-

vided to accommodate these connections. Refer to Vent Flue Pipe

and Combustion Air Pipe for details. NOTE: In addition to the

required clearances to combustible materials, a minimum of 24

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.

Refer to the Specification Sheet applicable to your model for mini-

mum clearances to combustible surfaces. One of the ventilation

openings must be within 12 inches of the top; the other opening

must be within 12 inches of the bottom of the confined space. In a

typical construction, the clearance between the door and door frame

is usually adequate to satisfy this ventilation requirement.

10

Most homes will require outside air be supplied to the furnace area by

means of ventilation grilles or ducts connecting directly to the outdoors

or spaces open to the outdoors such as attics or crawl spaces.

The following information on air for combustion and ventilation is reproduced

from the National Fuel Gas Code NFPA 54/ANSI Z223.1 Section 5.3.

5.3.1 General:

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

buildings and which require air for combustion, ventilation and dilu-

tion of flue gases from within the building. They do not apply to (1)

direct vent equipment which is constructed and installed so that all

air for combustion is obtained from the outside atmosphere and all

flue gases are discharged to the outside atmosphere, or (2) enclosed

furnaces which incorporate an integral total enclosure and use only

outside air for combustion and dilution of flue gases.

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

ventilation permit satisfactory combustion of gas, proper venting

and the maintenance of ambient temperature at safe limits under

normal conditions of use. Equipment shall be located so as not to

interfere with proper circulation of air. When normal infiltration

does not provide the necessary air, outside air shall be introduced.

(c) In addition to air needed for combustion, process air shall be pro-

vided as required for: cooling of equipment or material, controlling

dew point, heating, drying, oxidation or dilution, safety exhaust,

odor control, and air for compressors.

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

ventilation, including all air required for comfort and proper working

conditions for personnel.

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

air for combustion, ventilation and dilution of flue gases for gas

utilization equipment vented by natural draft normally may be ob-

tained by application of one of the methods covered in 5.3.3 and

5.3.4.

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

tion systems, clothes dryers, and fireplaces shall be considered in

determining the adequacy of a space to provide combustion air

requirements.

5.3.2 Equipment Located in Unconfined Spaces:

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

be adequate to provide air for combustion ventilation and dilution of

flue gases. However, in buildings of tight construction (for example,

weather stripping, heavily insulated, caulked, vapor barrier, etc.), 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 vol-

ume of all spaces meets the criteria for an unconfined space. The

total input of all gas utilization equipment installed in the combined

space shall be considered in making this determination. Each opening

shall have a minimum free area of 1 square inch per 1,000 BTU per

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

confined space, but not less than 100 square inches. One opening

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

bottom of the enclosure.

If resizing is required on any portion of the venting system, use the

appropriate table in Appendix G in the latest edition of the National Fuel

Gas Code ANSI Z223.1 and/or CSA B149.1-05.1-05 Installation Codes.

THERMOSTAT LOCATION

The thermostat should be placed approximately five feet from the floor

on a vibration-free, inside wall in an area having good air circulation.

Do not install the thermostat where it may be influenced by any of the

following:

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

cabinets.

•Hot or cold air from registers.

•Radiant heat from the sun.

•Light fixtures or other appliances.

•Radiant heat from a fireplace.

•Concealed hot or cold water pipes, or chimneys.

•Unconditioned areas behind the thermostat, such as an

outside wall.

HOT

COLD

DRAFTS OR DEAD SPOTS

-BEHIND DOORS

-IN CORNERS

-UNDER CABINETS

Thermostat Influences

Consult the instructions packaged with the thermostat for mount-

ing instructions and further precautions.

V. COMBUSTION & VENTILATION 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

heating/cooling costs but have created a problem supplying com-

bustion and ventilation air for gas fired and other fuel burning appli-

ances. 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-

bustion of gas-fired appliances, thereby exposing building occu-

pants to gas combustion products that could include carbon mon-

oxide.

If this furnace is to be installed in the same space with other gas appli-

ances, 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 B149.1-05 Installation Codes (Sections 7.2,

7.3, or 7.4), or applicable provisions of the local building codes for

determining the combustion air requirements for the appliances.

11

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

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

A

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 communicating with the outdoors through horizontal ducts,

each opening shall have a minimum free area of 1 square inch per

2,000 BTU per hour of total input rating of all equipment in the

enclosure.

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.

12

5. When directly communicating with the 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

engineering, approved by the authority having jurisdiction, provides an

adequate supply of air for combustion, ventilation, and dilution of flue

gases.

5.3.5 Louvers and Grilles:

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

during equipment operation.

5.3.6 Special Conditions Created by Mechanical Exhausting or Fire-

places:

Operation of exhaust fans, ventilation systems, clothes dryers, or fire-

places may create conditions requiring special attention to avoid unsat-

isfactory operation of installed gas utilization equipment. Air from

Inside Building. See 5.3.3-a.

VI. INSTALLATION POSITIONS

This furnace may be installed in an upright position or horizontal

on either the left or right side panel. Do not install this furnace on

its back. For upright upflow furnaces, return air ductwork may be

attached to the side panel(s) and/or basepan. For horizontal up-

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

For both upright or horizontal counterflow furnaces, return duct-

work must be attached to the basepan (top end of the blower com-

partment). NOTE: Ductwork must never be attached to the back of

the furnace. For upflow installations requiring 1,800 CFM or more,

use either two side returns or a bottom return or a combination of

side and bottom. Contact your distributor for proper airflow require-

ments and number of required ductwork connections. Refer to

“Recommended Installation Positions” figure for appropriate in-

stallation positions, ductwork connections, and resulting airflow

arrangements.

VII. HORIZONTAL APPLICATIONS & CONSIDERATIONS

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

application of this furnace as a horizontal furnace differs only slightly

from an upright installation. When installing a furnace horizontally,

additional consideration must be given to the following:

LOCATION

Horizontal Furnace

DRAIN TRAP AND LINES

In horizontal applications the condensate drain trap is secured to the

furnace side panel, suspending it below the furnace. A minimum clear-

ance of 4 3/4 inches below the furnace must be provided for the drain

trap. Additionally, the appropriate downward piping slope must be main-

tained from the drain trap to the drain location. Refer to Condensate

Drain Trap and Lines for further details. If the drain trap and drain line

will be exposed to temperatures near or below freezing, adequate mea-

sures must be taken to prevent condensate from freezing.

LEVELING

Leveling ensures proper condensate drainage from the heat exchanger

and induced draft blower. For proper flue pipe drainage, the furnace

must be level lengthwise from end to end. The furnace should also be

level from back to front or have a slight tilt with the access doors downhill

(approximately 3/4 inches) from the back panel. The slight tilt allows

the heat exchanger condensate, generated in the recuperator coil, to

flow forward to the recuperator coil front cover.

ALTERNATE VENT/FLUE AND COMBUSTION AIR CONNECTIONS

In horizontal installations, provisions for alternate vent/flue piping is

available for upflow furnaces with left air discharge. Counterflow fur-

naces include provisions for both alternate vent/flue and combustion

air piping with right air discharge. These configurations allow the flue

and combustion air piping to be run vertically through the furnace. Re-

fer to the “Recommended Installation Positions” figure for further de-

tail. The standard piping connections may also be used in these posi-

tions. Refer to Vent/Flue Pipe and Combustion Air Pipe for details

concerning the conversion to the alternate vent/flue air connections.

When using the horizontal alternate vent configuration, you must

use the RF000142 vent drain kit. See following illustration.

13

VIII. PROPANE GAS /HIGH ALTITUDE INSTALLATIONS

P

OSSIBLE

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

MAY

OCCUR

IF

THE

CORRECT

CONVERSION

KITS

ARE

NOT

INSTALLED

. T

HE

APPROPRIATE

KITS

MUST

BE

APPLIED

TO

ENSURE

SAFE

AND

PROPER

FURNACE

OPERATION

. A

LL

CONVERSIONS

MUST

BE

PERFORMED

BY

A

QUALIFIED

INSTALLER

OR

SERVICE

AGENCY

.

WARNING

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.

For furnaces being converted to LP gas, it is strongly recommended

that a LPLP03 kit also be installed. The use of this kit will prevent

the furnace from firing when the LP gas supply pressure is too low

to support proper combustion.

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).

Altitude Gas Kit Orifice Manifold

Pressure

Pressure

Switch

*MH95, ACSH96, GCH95, GCH9 GAS ORIFICE CHART

Natural

Propane

2 LPM-06* supports both Honeywell and White-Rodgers 2-stage valves

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

0-7000

None

LPM-06*2

#43

#55

3.5" w.c.

10.0" w.c.

None

Altitude Gas Kit Orifice Manifold

Pressure

Pressure

Switch

2 LPM-06* supports both Honeywell and White-Rodgers 2-stage valves

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

0-7000

None

LPM-06*2

#45

#55

3.5" w.c.

10.0" w.c.

None

AMEH96, GME95 GAS ORIFICE CHART

Natural

Propane

Contact the distributor for a tabular listing of appropriate

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

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

operation. All conversions must be performed by a qualified installer,

or service agency.

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

PIPE LOCATION

ALTERNATE FLUE PIPE

LOCATION

AIR

DISCHARGE

AIR

DISCHARGE

AIR

DISCHARGE

Bottom

Return

Duct

Connection

Bottom

Return

Duct

Connection

Bottom

Return

Duct

Connection

COUNTERFLOW

UPRIGHT

COUNTERFLOW HORIZONTAL

RIGHT AIR DISCHARGE

COUNTERFLOW 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, or when a counterflow furnace is installed with supply air

discharging to the left. In either case, use the standard flue and

combustion air piping connections.

ALTERNATE E LECTRICAL AND G AS L INE C ONNECTIONS

This furnace has provisions allowing for electrical and gas line

connections through either side panel. In horizontal applications

the connections can be made either through the “top” or “bottom”

of the furnace.

DRAIN PAN

A drain pan must be provided if the furnace is installed above a

conditioned area. The drain pan must cover the entire area under

the furnace (and air conditioning coil if applicable).

FREEZE PROTECTION

Refer to Horizontal Applications and Conditions - Drain Trap and

Lines.

FURNACE SUSPENSION

If the furnace is installed in a crawl space it must be suspended from

the floor joist or supported by a concrete pad. Never install the fur-

nace on the ground or allow it to be exposed to water. Refer to Loca-

tion Requirements and Considerations - Furnace Suspension for fur-

ther details.

14

v

V

X

DIRECT VENT TERMINAL CLEARANCES

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

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

† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single fanily dwellings and serves

both dwellings.

‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.

* For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, the following statement shall be included:

“Clearance in accordance wtih local installation codes and the requirements of the gas supplier and the manufacturer’s installation

instruction.”

Canadian Installations

1

U.S. Installations

2

I= Clearance to service

regulator vent outlet.

3 ft. (91 cm). *

J= Clearance to nonmechanical air

supply inlet to building or the

combustion air inlet to any other

appliance.

6 in. (15 cm) for appliances 10,000

Btuh (3 kW), 12 in. (30 cm) for

appliances > 10,000 Btuh (3kW) and

100,000 Btuh (30 kW), 36 in. (91 cm)

for appliances > 100,000 Btuh (30 kW).

6 in. (15 cm) for appliances 10,000

Btuh (3 kW), 9 in. (23 cm) for

appliances > 10,000 Btuh (3kW) and

50,000 Btuh (15 kW), 12 in. (30 cm) for

appliances > 50,000 Btuh (15 kW).

K= Clearance to a mechanical

air supply inlet.

6 ft. (1.83 m) 3 ft. (91 cm) above if within

10 ft. (3 m) horizontally.

L= Clearance above paved sidewalk or

paved driveway located on public

property.

7 ft. (2.13m) † *

M= Clearance under veranda, porch,

deck or balcony.

12 in. (30 cm) ‡ *

Canadian Installations

1

U.S. Installations

2

A= Clearance above grade,

veranda, porch, deck or

balcony. (See 1.24.6-i(9)b.)

12 in. (30 cm) 12 in. (30 cm)

B= Clearance to window or

door that may be opened.

6 in. (15 cm) for appliances

10,000 Btuh (3 kW), 12 in. (30 cm) for

appliances > 10,000 Btuh (3 kW) and

100,000 Btuh (30 kW), 36 in. (91 cm)

for appliances > 100,000 Btuh (30

kW).

6 in. (15 cm) for appliances

10,000 Btuh (3 kW), 9 in. (23 cm) for

appliances > 10,000 Btuh (3 kW) and

50,000 Btuh (15 kW), 12 in. (30 cm) for

appliances > 500,000 Btuh (15 kW).

C= Clearance to permanently

closed window.

**

D= Vertical clearance to ventilated soffit

located above the terminal within a

horizontal distance of 2 feet (61 cm)

from the center line of the terminal.

**

E= Clearance to unventilated soffit. * *

F= Clearance to outside corner. * *

G= Clearance to inside corner. * *

H= Clearance to each side of center

line extended above meter/regulator

assembly.

3 ft. (91 cm) within a height 15 ft.

(4.5 m) above the meter/regulator

assembly.

*

OTHER THAN DIRECT VENT TERMINAL CLEARANCES

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

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

† A vent shall not terminate directly above a sidewalk or paveable driveway that is located between two single family dwellings and

serves both dwelling.

‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.

* For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, the following statement shall be included:

“Clearance in accordance wtih local installation codes and the requirements of the gas supplier and the manufacturer’s installation

instruction.”

Canadian Installations

1

U.S. Installations

2

I= Clearance to sevice

regulator vent outlet.

3 ft. (91 cm). *

J= Clearance to nonmechanical air

supply inlet to building or the

combustion air inlet to any other

appliance.

6 in. (15 cm) for appliances 10,000

Btuh (3 kW), 12 in. (30 cm) for

appliances > 10,000 Btuh (3kW) and

100,000 Btuh (30 kW), 36 in. (91 cm)

for appliances > 100,000 Btuh (30 kW).

4 ft. (1.2 m) below or to side of

opening; 1 ft. (300 m) above opening.

K= Clearance to a mechanical

air supply inlet.

6 ft. (1.83 m) 3 ft. (91 cm) above if within

10 ft. (3 m) horizontally.

L= Clearance above paved sidewalk or

paved driveway located on public

property.

7 ft. (2.13m) † 7 ft. (2.13m)

M= Clearance under veranda, porch,

deck or balcony.

12 in. (30 cm) ‡ *

Canadian Installations

1

U.S. Installations

2

A= Clearance above grade,

veranda, porch, deck or

balcony. (See 1.24.6-i(9)b.)

12 in. (30 cm) 12 in. (30 cm)

B= Clearance to window or

door that may be opened.

6 in. (15 cm) for appliances

10,000 Btuh (3 kW), 12 in. (30 cm) for

appliances > 10,000 Btuh (3 kW) and

100,000 Btuh (30 kW), 36 in. (91 cm)

for appliances > 100,000 Btuh (30

kW).

4 ft. (1.2 m) below or to side of

opening; 1 ft. (300 m) above opening.

C= Clearance to permanently

closed window.

**

D= Vertical clearance to ventilated soffit

located above the terminal within a

horizontal distance of 2 feet (61 cm)

from the center line of the terminal.

**

E= Clearance to unventilated soffit. * *

F= Clearance to outside corner. * *

G= Clearance to inside corner. * *

H= Clearance to each side of center

line extended above meter/regulator

assembly.

3 ft. (91 cm) within a height 15 ft.

(4.5 m) above the meter/regulator

assembly.

*

15

IX. VENT/FLUE PIPE & COMBUSTION AIR PIPE

GENERAL

F

AILURE

TO

FOLLOW

THESE

INSTRUCTIONS

CAN

RESULT

IN

BODILY

INJURY

OR

DEATH

. C

AREFULLY

READ

AND

FOLLOW

ALL

INSTRUCTIONS

GIVEN

IN

THIS

SECTION

.

WARNING

U

PON

COMPLETION

OF

THE

FURNACE

INSTALLATION

,

CAREFULLY

INSPECT

THE

ENTIRE

FLUE

SYSTEM

BOTH

INSIDE

AND

OUTSIDE

OF

THE

FURNACE

TO

ASSURE

IT

IS

PROPERLY

SEALED

. L

EAKS

IN

THE

FLUE

SYSTEM

CAN

RESULT

IN

SERIOUS

PERSONAL

INJURY

OR

DEATH

DUE

TO

EXPOSURE

TO

FLUE

PRODUCTS

,

INCLUDING

CARBON

MONOXIDE

.

WARNING

A condensing gas furnace achieves its high level of efficiency by ex-

tracting almost all of the heat from the products of combustion and

cooling them to the point where condensation takes place. Because

of the relatively low flue gas temperature and water condensation re-

quirements, 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 connec-

tors” 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 con-

nectors are compatible with furnace flue products. Additionally, it

is the responsibility of the installer to ensure that all piping and

connections possess adequate structural integrity and support to

prevent flue pipe separation, shifting, or sagging during furnace

operation.

DUAL C ERTIFICATION: NON-DIRECT/DIRECT V ENT

This furnace is dual certified and may be installed as a non-direct

vent (single pipe) or direct vent (dual pipe) appliance. A non-direct

vent installation requires only a vent/flue pipe, while a direct vent

installation requires both a vent/flue pipe and a combustion air

intake pipe. Refer to the appropriate section for details concerning

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

terminations.

MATERIALS AND JOINING METHODS

T

O

AVOID

BODILY

INJURY

,

FIRE

OR

EXPLOSION

,

SOLVENT

CEMENTS

MUST

BE

KEPT

AWAY

FROM

ALL

IGNITION

SOURCES

(

I

.

E

., S

PARKS

,

OPEN

FLAMES

,

AND

EXCESSIVE

HEAT

)

AS

THEY

ARE

COMBUSTIBLE

LIQUIDS

. A

VOID

BREATHING

CEMENT

VAPORS

OR

CONTACT

WITH

SKIN

AND

/

OR

EYES

.

WARNING

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 meeting ASTM D2665 and ASTM

D3311. Carefully follow the manufacturer’s instructions for cutting,

cleaning, and solvent cementing of PVC.

The use of Schedule 40 PVC or ABS cellular core (Foam Core) plas-

tic pipe is also acceptable as a flue/vent and intake pipe material. PVC

primer meeting ASTM F656 and PVC solvent cement meeting ASTM

D2564 specifications must be used. Fittings must be DWV type fit-

tings meeting ASTM D2665 and ASTM D3311. Carefully follow the

manufactures instructions for cutting, cleaning and solvent cement-

ing of PVC.

In addition to PVC and ABS pipe and fittings, Innoflue® by

Centrotherm Eco Systems and PolyPro® by M&G Duravent are also

approved vent and combustion air materials for installations in the

U.S.A. and Canada. Manufacturers Installation instructions for these

products must be followed. These products have specific instructions

for installing, joining and terminating. Do not mix materials or compo-

nents of one manufacturer with materials or components of another

manufacturer.

For Canadian installations; all PVC pipe, fittings and joining mate-

rials must be UL S636 listed.

As an alternative to PVC pipe, primer, solvent cement, and fittings,

ABS materials which are in compliance with the following specifi-

cations 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 for ABS to ABS joints must meet ASTM

D2235 and, if used in Canada, must be CSA listed. 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 pipe manufacturers’ instructions for cutting, cleaning,

and solvent cementing PVC and/or ABS.

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

radius (Long sweep 1/4 bend DWV) types conforming to ASTM

D3311. A medium radius (1/4 bend DWV) elbow measures 3 1/

16” minimum 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 A IR PIPING PRACTICES

Adhere to these instructions to ensure safe and proper furnace

performance. The length, diameter, and number of elbows of the

vent/flue pipe and combustion air pipe (when applicable) affects

the performance of the furnace and must be carefully sized. All

piping must be installed in accordance with local codes and these

instructions.

Piping must be adequately secured and supported to prohibit sag-

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

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

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

towards the furnace, to properly return condensate to the furnace’s

drain system. Allowances should be made for minor expansion

and contraction due to temperature variations. For this reason,

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

followed by a short offset of less than 40 inches.

Precautions should be taken to prevent condensate from freez-

ing inside the vent/flue pipe and/or at the vent/flue pipe termina-

tion. It is our recommendation that all vent/flue piping exposed to

temperatures below 35°F for extended periods of time should be

insulated with 1/2” thick closed cell foam. Also all vent/flue piping

exposed outdoors in excess of the terminations shown in this

manual (or in unheated areas) should be insulated with 1/2” thick

closed cell foam. Inspect piping for leaks prior to installing insu-

lation.

16

TERMINATION LOCATIONS

NOTES: Refer to Location Requirements and Considerations for

combustion air contaminant restrictions.

The following bullets and diagram describe the restrictions 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 located in this section

for specific details on termination construction.

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

12 inches above ground level or the anticipated snow 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

from any vertical wall (including any anticipated snow build

up).

• A vent termination shall not terminate over public walkways

or over an area where condensate or vapor could create

a nuisance or hazard or could be detrimental to the

operation of regulators, relief valves, or other equipment.

• The combustion air intake termination of a direct vent

application should not terminate in an area which is

frequently dusty or dirty.

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

over the preceding termination restrictions.

CANADIAN V ENTING R EQUIREMENTS

In Canada, venting must conform to the requirements of the cur-

rent CAN/CSA-B149.1-05 Installation Code. Use only CSA-listed,

ULC-S636 compliant two- or three-inch diameter PVC or ABS pipe,

solvent cement, and fittings throughout. The certified piping should

be clearly marked with the ULC Std “S636” on the pipe and fittings.

Carefully follow the pipe manufacturers’ instructions for cutting,

cleaning, and solvent cementing PVC and/or ABS.

The vent can be run through an existing unused chimney provided

the space between the vent pipe and the chimney is insulated and

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

STANDARD FURNACE C ONNECTIONS

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 rub-

ber coupling and worm gear hose clamps provided with this furnace

(see “Standard Connections” figure). The rubber coupling allows sepa-

ration of the vent/flue pipe from the furnace during servicing. Combus-

tion Air and Vent piping should be routed in a manner to avoid contact

with refrigerant lines, metering devices, condensate drain lines, etc.

If necessary, clearances may be increased by utilizing two 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 between refrigerant lines, metering

devices, and condensate drain lines, etc. This joint is the equivalent

of one 90 deg. elbow when considering elbow count.

45 DEGREE

LONG-SWEEP

ELBOWS

V

E

N

T

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 or ABS elbow or coupling using the ap-

propriate 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 I NSTALLATIONS

On upflow units secure the combustion air intake pipe directly to the

air intake coupling. On counterflow units secure the combustion air

intake pipe to the air intake coupling using the rubber coupling and

worm gear hose clamps provided with the unit. The counterflow rub-

ber coupling allows service removal of air intake piping internal to the

furnace blower compartment. NOTE: Because of probable material

conflicts, do not use other commercially available “no hub connec-

tors”. The combustion air intake pipe can also be secured directly to

the counterflow unit air intake pipe coupling.

NON-DIRECT V ENT INSTALLATIONS

A minimum of one 90° elbow should be installed on the combustion air

intake “coupling” to guard against inadvertent blockage.

17

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.

Insert cut section of vent/flue pipe and coupling into alternate

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

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

and coupling to the induced draft blower. Secure the coupling

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

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

T

HE

RUBBER

ELBOW

IS

NOT

DESIGNED

TO

SUPPORT

A

LOAD

. W

HEN

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

.

WARNING

7. Upflow and Counterflow units.

For upright installations, externally mount the rubber elbow

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-

supplied vent/flue pipe directly to the vent/flue coupling

using a PVC or ABS coupling or elbow.

4

CUT PIPE PER

VENT/FLUE

PIPE CUTS

DIAGRAM

UPFLOW

REMOVE

4 SCREWS

3

REMOVE

PIPE

2

DETACH RUBBER

ELBOW FROM

ID BLOWER AND

VENT/FLUE

PIPE

1.

REMOVE

4 SCREWS

2

DETACH RUBBER

ELBOW FROM

ID BLOWER AND

VENT/FLUE

PIPE

COUNTERFLOW

3

REMOVE

PIPE

5

REMOVE

A

ND RELOCATE

5

REMOVE

AND RELOCATE

1

REMOVE

3 SCREWS

1

4

CUT PIPE PER

VENT/FLUE PIPE CUTS

DIAGRAM

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

90º PVC

ELBOW

(NON-DIRECT VENT)

90º PVC

ELBOW

(NON-DIRECT VENT)

STANDARD CONNECTIONS

OR

OR

UPFLOW COUNTERFLOW

ALTERNATE FURNACE C ONNECTIONS

If the standard locations are undesirable for a specific installation,

alternate side panel locations are available on the upflow models for

the vent/flue. Counterflow furnaces include provisions for both alter-

nate vent/flue and combustion air piping. 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 (upflow and counterflow) and combus-

tion air intake (counterflow only) 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), if needed.

E

DGES

OF

SHEET

METAL

HOLES

MAY

BE

SHARP

. U

SE

GLOVES

AS

A

PRECAUTION

WHEN

REMOVING

HOLE

PLUGS

.

WARNING

ALTERNATE VENT/FLUE LOCATION

The alternate vent/flue location is the large hole directly in line with

the induced draft blower outlet. To use the alternate vent/flue

location refer to the following steps, the “Vent/Flue Pipe Cuts”

figure, and the “Alternate Vent/Flue Location” 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.

1. 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 the induced draft blower. Discard remaining pipe

and elbows.

Counterflow units.

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

coupling. See Vent/Flue Pipe Cuts figure. Save vent/flue pipe

attached to blower deck coupling for use in the alternate

location. Discard remaining pipe and elbows.

18

5

A

DDITIONAL PLUG

FROM DRAIN KIT

7

EXTERNALLY

MOUNT

RUBBER ELBOW

6

SECURE TO

ID BLOWER WITH

RUBBER COUPLING

AND HOSE

CLAMPS

COUNTERFLOW/UPRIGHT

(UPFLOW SIMILAR)

UPFLOW/HORIZONTAL

(COUNTERFLOW SIMILAR)

6

SECURE TO

ID BLOWER WITH

RUBBER COUPLING

AND HOSE

CLAMPS

6

SECURE TO

CABINET WITH

SCREWS

Alternate Vent/Flue 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;

however, 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 fur-

nace, refer to Vent/Flue Pipe and Combustion Air - Standard Fur-

nace Connections or Alternate Furnace Connections for specific

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

- Vent/Flue Pipe Terminations for specific details on termination

construction.

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. 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 prevent

inadvertent blockage. The tee used in the vent/flue termination must

be included when determining the number of elbows in the piping sys-

tem.

012345678

40,000 2

or 2 1/2 1009590858075706560

45,000 2

or 2 1/2 250 245 240 235 230 225 220 215 210

60,000 2

or 2 1/2 110105100959085807570

70,000 2

or 2 1/2 220 215 210 205 200 195 190 185 180

80,000 2

or 2 1/2 35 30 25 20 15 10

80,000 3 132 125 118 111 104 97 90 83 76

90,000 2

or 2 1/2 45 40 35 30 25 20

90,000 3 147 140 133 126 119 112 105 98 91

100,000 3 98 91 84 77 70 63 56 49 42

115,000 3 140 133 126 119 112 105 98 91 84

Not Applicable

Not Applicable

*MH95/ACSH96/AMEH96/GCH95/GME95

Direct Vent (2 - Pipe) and Non-Direct Vent (1- Pipe) (6)

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

Unit Input

(Btu)

Pipe

Size (4)

(in.)

Number of Elbows (3) (5)

1) Maximum allowable limits listed on individual lengths for inlet and flue and

NOT a combination.

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 determining

the number of elbows in the piping system.

4) 2 1/2” or 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.

6) One 90° elbow should be secured to the combustion air intake connec-

tion.

VENT/FLUE PIPE TERMINATIONS

NOTE: If either a 90 degree or 45 degree elbow is used for termina-

tion, it must be pointed downward.

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 Vent/Flue Pipe and Combustion Air Pipe -

Termination Locations for details concerning location restrictions.

The penetration of the vent through the roof must be sealed tight

with proper flashing such as is used with a plastic plumbing 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. A 3” diameter hole is required for a 2 1/2” pipe

and 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 installed 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 installed on the inside and

outside of the wall. The wall penetration should be sealed with sili-

cone 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.

NOTE: Terminate both pipes in the same pressure zone (same

side of roof, no major obstacles between pipes, etc.)

19

COMBUSTION AIR INTAKE

(OPTIONAL)

*Not required for

single pipe installation

TEE (OPTIONAL)

96” MAX. - 3” MIN.

ROOF LINE

INTAKE

SCREEN

OPTIONAL

12” MIN

HEIGHT DIFFERENCE

BETWEEN

INTAKE AND VENT

12” MIN TO ROOF OR HIGHEST

ANTICIPATED SNOW LEVEL

STRAIGHT

ELBOWS

_______________

VENT/FLUE TEE (

or

45° ELBOW

TURNED DOWN or

90° ELBOW TURNED

DOWN

OPTIONAL)

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. Instal-

lation of screens, while strongly recommended, is not required and

will not affect performance of the unit.

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 flashing.

Both the combustion air intake and a vent/flue pipe terminations must

be in the same atmospheric pressure zone. For details concerning

connection of pipes to the furnace, refer to the Vent/Flue Pipe and

Combustion Pipe - Standard Furnace Connections or Alternate Fur-

nace Connections.

VENT/FLUE AND COMBUSTION AIR PIPE LENGTHS AND DIAMETERS

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

ameter 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 & Combustion Air 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 objec-

tionable, insulation of the combustion air pipe may be required.

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

Insultube where required.

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.

Refer to Vent/Flue Pipe and Combustion Pipe - Termination Loca-

tions 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.

Horizontal terminations should be as shown in the following fig-

ure. Refer to Vent/Flue Pipe and Combustion Pipe - Termination

Location for location restrictions. A 2 3/8” diameter wall penetra-

tion is required for 2” diameter pipe. A 3” diameter hole is required

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

pipe. The wall penetration should be sealed with silicone caulking

material.

90º OR 45°

ELBOW

SCREEN

(OPTIONAL)

12" MIN. TO GRADE OR

HIGHEST ANTICIPATED

SNOW LEVEL

6” MAX

10”- 24”

4” MIN

Standard Horizontal Terminations (Dual Pipe)

Vent & Combustion Air Intake Measurements for Standard Hori-

zontal Terminations (Dual Pipe)

Center to center = 10” min / 24” max.

Vertical separation: 0” - 24”

Vent termination from wall = 8” min / 12” max.

Combustion air intake from wall = 6” max.

Vent and intake clearance to ground

or anticipated snow level = 12” min.

20

SCREEN

(OPTIONAL)

AIR

INTAKE

90°

ELBOWS

12" MIN. ABOVE

HIGHEST ANTICIPATED

SNOW LEVEL

3” - 24”

Alternate Horizontal Vent Termination (Dual Pipe)

SCREEN

(OPTIONAL)

AIR

INTAKE

90°

ELBOWS

12" MIN. ABOVE

HIGHEST ANTICIPATED

SNOW LEVEL

3”-24” BETWEEN PIPES

Combustion Air Intake may also be snorkeled to obtain 12” min. ground

clearance.

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 T ERMINATIONS F OR I NSTALLATION OF M ULTIPLE

DIRECT VENT F URNACES

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

through a common roof top, maintain the same minimum clear-

ances between 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

following figure. Always terminate all exhaust vent outlets at the

same elevation and always terminate all air intakes at the same

elevation.

3” MIN

12” MIN TO GRADE OR HIGHEST

ANTICIPATED SNOW LEVEL

12” MIN SEPARATION

3” - 24”

OPTIONAL

INTAKE

SCREENS

Termination of Multiple Direct Vent Furnaces

CONCENTRIC VENT TERMINATION

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

for installation specifications.

SIDE WALL VENT KIT

This kit is to be used with 2” or 3” direct vent systems. The vent kit

must terminate outside the structure and may be installed with the

intake and exhaust pipes located side-by-side or with one pipe above

the other. This kit is NOT intended for use with single pipe (indirect

vent) installations.

Refer to the directions furnished with the Side Wall Vent Kit (p/n

0170K00000S) for installation specifications.

X. CONDENSATE DRAIN LINES & DRAIN TRAP

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 appropri-

ate 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

bottom (down side) of the unit with the drain trap suspended be-

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

accordance with all local codes and the instructions in the follow-

ing sections.

Follow the bullets listed below when installing the drain system.

Refer to the following sections for specific details concerning fur-

nace 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

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.

• 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.

21

• 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.

NOTE: In vertical installations, air conditioning coil condensate may

drain into the furnace trap as long as there is a trap between the coil and

the furnace trap and the drain pipe is not terminating below the water

level of the furnace trap.

STANDARD RIGHT OR LEFT SIDE DRAIN HOSE CONNECTIONS

All installations positions require the use of the drain trap, hoses, tubes,

and clamps. The following quantity of hoses, tubes, and hose clamps

are provided with the unit.

DRAIN TRAP

QTY: 1

GREEN

HOSE CLAMPS

QTY: 3 SILVER

HOSE CLAMP

QTY: 1

TUBE 2

QTY: 2

TUBE 1

QTY: 1

HOSE B

QTY: 1

HOSE A

QTY: 1

RED

HOSE CLAMP

QTY: 1

Hose and Tube Identification

In a 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 side panel and into the drain trap secured

to the outside of the cabinet.

NOTE: Refer to Alternate Vent/Flue Hose Connections for upright

installations using an alternate vent/flue outlet.

1. Remove the rubber plug from the right side of the front cover

drain port.

2. Secure Hose A to front cover drain port with a red hose

clamp. Route hose to rear side panel grommet hole.

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

silver hose clamp. Angle tube outward toward front of

furnace.

5. 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.

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

Drain Trap Mounting.

6. Insert short end of each of tube 2 through side panel

grommet holes. Secure tubes to hoses A and B with green

hose clamps. Ensure hoses and tubes maintain a

downward slope for proper drainage and that they are not

kinked or binding.

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

B

HOSE

A

RUBBER

ELBOW

RED HOSE

CLAMP

SILVER HOSE CLAMP

Upright “Standard” Connections -Right Side

(Upflow Shown, Counterflow Similar)

22

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

Vent/Flue Pipe and Combustion Air Pipe for details on alternate

vent/flue pipe connection.

1. Remove the rubber plug from the right-side drain port on

the front cover . Save for use in step 3.

2. Secure Hose A to front cover drain port with a red hose

clamp. Route hose to rear right side panel grommet hole.

3. Remove grommet from front right-side panel drain 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

silver hose clamp. Angle tube toward trap.

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

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

with a green hose clamp. Route hose toward right side

panel 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. Insert short end of remaining Tube 2 into 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.

Upright “Alternate: Connections - Right Side Only

(Upflow Shown, Counterflow Similar)

RUBBER ELBOW

(EXTERNALLY

MOUNTED)

TUBE 1

GREEN HOSE

CLAMPS

(3 PLACES)

HOSE B

TUBE(S) 2 DRAIN TRAP

HOSE A

FRONT

COVER

DRAIN

PORT

RUBBER

ELBOW

DRAIN PORT

RED HOSE

CLAMP

SILVER HOSE CLAMP

23

UPRIGHT INSTALLATIONS-TRAP ON L EFT SIDE

NOTE: For left side trap installation, grommets must be moved to

the left side of the furnace and the plugs installed on the right side

of the furnace.

1. Remove the rubber plug from the left side drain port on the

front cover.

2. Secure Hose A to front cover drain port with a red hose

clamp. Route hose to rear side panel grommet hole.

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

the rubber elbow.

Upright “Standard” Connections - Left Side

(Upflow Shown, Counterflow Similar)

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

hose clamp. Angle tube outward toward front of furnace.

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

to table for appropriate length to cut. Secure remaining hose

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

to front left side panel grommet hole.

NOTE: Long hose “B” must always be connected to Tube 1 and

the elbow and not on the front cover.

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

holes. Secure tubes to Hose A and Hose B with green hose

clamps. Ensure hoses and tubes maintain a downward

slope for proper drainage and that they are not kinked or

binding.

LEFT

SIDE PANEL

FRONT COVER

DRAIN PORT

HOSE A

SIDE PANEL

DRAIN

HOLES

TUBE(S) 2

DRAIN

TRAP

GREEN HOSE

CLAMP

TUBE 1

RUBBER

ELBOW

HOSE B

RUBBER

ELBOW

DRAIN PORT

RED HOSE

CLAMP

SILVER HOSE

CLAMP

GREEN

HOSE CLAMP

24

Cabinet Width

(inches)

Models

(kBTU_Tons)

"X" Length to Cut From Long

End of Hose B

(inches)

17 1/2 040_3, 045_30,

060_3 7

21 070_40, 080_5 3 1/2

090_50, 100_5

115_50 None24 1/2

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. Secure drain trap to side panel at the mounting holes

(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 I NSTALLATIONS

RIGHT SIDE DOWN

Horizontal installations with the right side down require that the

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

and the rubber elbow drain port.

NOTE: On counterflow models, relocation of the front cover pressure

switch hose is required.

Make connections as follows:

1. Remove the rubber plug from right side of the 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. Secure Hose A to front cover drain tap with a red hose clamp.

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

silver 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 and discard the radius pieces.

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

right down side panel grommet holes. Secure tubes to

Hose A and 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 Conden-

sate Drain Lines and Drain Trap - Horizontal Drain Trap Mounting.

HOSE A

HOSE B

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

SILVER HOSE

CLAMP

Horizontal Connections - Right Side Down

(Upflow Shown, Counterflow Similar)

25

LEFT SIDE DOWN

Horizontal installations with the left side panel down will require

drain 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 front cover left (down)

side drain port.

2. Relocate the front cover pressure switch hose connection

from the right side (as shipped) pressure tap to the left

(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. Secure Hose A to front cover drain port with a red 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.

4. Remove the rubber cap from the side drain port on the rubber

elbow.

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

port using a green hose clamp. NOTE: For left side drainage,

route hose to far left (down) side panel grommet holes.

NOTE: Horizontal left side connections (when using new

side port drain elbow) does not require connecting a hose

to the induced draft blower housing.

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

Tube 2 and discard radius ends.

7. Insert approximately one inch of each Tube 2 through left

side panel grommet hole. Secure tubes to Hose A and

Hose B with a green hose clamps. NOTE: Tube must

reach bottom of trap. Ensure hoses 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 Conden-

sate Drain Lines and Drain Trap - Horizontal Drain Trap Mounting.

LEFT SIDE

PANEL FRONT COVER

DRAIN PORT

SIDE PANEL

GROMMET

HOLES

DRAIN TRAP

TUBE(S) 2

GREEN HOSE

CLAMP

HOSE A

HOSE B

FRONT

COVER

PRESSURE

TAP

RED HOSE CLAMP

GREEN HOSE

CLAMP

Horizontal Connections - Left Side Down

(Upflow Shown, Counterflow Similar)

HORIZONTAL DRAIN TRAP MOUNTING (LEFT OR RIGHT SIDE PANEL)

1. Position the drain trap against side panel with drain tubes inserted into trap. Note that the trap may be orientated with the outlet

facing either the furnace’s top cover or base pan.

2. Secure drain trap to side panel at the dimples or crosshairs located on either side of the grommet drain holes.

3. Confirm that tubes reach bottom of drain trap and that all hoses maintain a downward slope and are not kinked or binding.

4. Attach PVC drain line to drain trap outlet with either a 90° elbow or coupling.

26

XI. ELECTRICAL CONNECTIONS

HIGH VOLTAGE!

T

O

AVOID

THE

RISK

OF

ELECTRICAL

SHOCK

,

WIRING

TO

THE

UNIT

MUST

BE

POLARIZED

AND

GROUNDED

.

WARNING

HIGH VOLTAGE!

T

O

AVOID

PERSONAL

INJURY

OR

DEATH

DUE

TO

ELECTRICAL

SHOCK

,

DISCONNECT

ELECTRICAL

POWER

BEFORE

SERVICING

OR

CHANGING

ANY

ELECTRICAL

WIRING

.

WARNING

L

ABEL

ALL

WIRES

PRIOR

TO

DISCONNECTION

WHEN

SERVICING

CONTROLS

. W

IRING

ERRORS

CAN

CAUSE

IMPROPER

AND

DANGEROUS

OPERATION

. V

ERIFY

PROPER

OPERATION

AFTER

SERVICING

.

CAUTION

WIRING H ARNESS

The wiring harness is an integral part of this furnace. Field alter-

ation to comply with electrical codes should not be required. Wires

are color coded for identification purposes. Refer to the wiring

diagram for wire routings. If any of the original wire as supplied

with the furnace must be replaced, it must be replaced with wiring

material having a temperature rating of at least 105°C. Any re-

placement wiring must be copper conductor.

115 VOLT L INE CONNECTIONS

Before proceeding with electrical connections, ensure that the sup-

ply voltage, frequency, and phase correspond to that specified on

the unit rating plate. Power supply to the furnace must be N.E.C.

Class 1, and must comply with all applicable codes. The furnace

must be electrically grounded in accordance with local codes or, in

their absence, with the latest edition of The National Electric Code,

ANSI NFPA 70 and/or The Canadian Electric Code CSA C22.1.

Use a separate fused branch electrical circuit containing properly

sized wire, and fuse or circuit breaker. The fuse or circuit breaker

must be sized in accordance with the maximum overcurrent pro-

tection specified on the unit rating plate. An electrical disconnect

must be provided at the furnace location.

NOTE: Line polarity must be observed when making field

connections.

Connect hot, neutral, and ground wires as shown in the wiring

diagram located on the unit’s blower door. For direct vent applica-

tions, the cabinet opening to the junction box must be sealed air

tight using either a UL approved bushing such as Heyco Liquid

Tight or by applying a UL approved non-reactive sealant to bush-

ing.

Line polarity must be observed when making field connections.

Line voltage connections can be made through either the right or left

side panel. The furnace is shipped configured for a left side (right side

for counterflows) electrical connection with the junction box located

inside the burner compartment. To make electrical connections

through the opposite side of the furnace, the junction box must be

relocated to the other side of the burner compartment prior to making

electrical connections. To relocate the junction box, observe the fol-

lowing steps.

JUNCTION BOX RELOCATION

E

DGES

OF

SHEET

METAL

HOLES

MAY

BE

SHARP

. U

SE

GLOVES

AS

A

PRECAUTION

WHEN

REMOVING

HOLE

PLUGS

.

WARNING

1. Remove the burner compartment door.

2. Remove and save the two screws securing the junction box

to the side panel.

3. Relocate junction box and associated plugs and grommets

to opposite side panel. Secure with screws removed in

step 2.

*

*

*

**

*

*

*

*

STANDARD

JUNCTION BOX

LOCATION

ALTERNATE

JUNCTION BOX

LOCATION

Junction Box Relocation

HIGH VOLTAGE!

T

O

AVOID

THE

RISK

OF

INJURY

,

ELECTRICAL

SHOCK

OR

DEATH

,

THE

FURNACE

MUST

BE

ELECTRICALLY

GROUNDED

IN

ACCORDANCE

WITH

LOCAL

CODES

OR

IN

THEIR

ABSENCE

,

WITH

THE

LATEST

EDITION

OF

THE

N

ATIONAL

E

LECTRIC

C

ODE

.

WARNING

To ensure proper unit grounding, the ground wire should run from

the furnace ground screw located inside the furnace junction box

all the way back to the electrical panel. NOTE: Do not use gas

piping as an electrical ground. To confirm proper unit grounding,

turn off the electrical power and perform the following check.

1. Measure resistance between the neutral (white) connection

and one of the burners.

2. Resistance should measure 10 ohms or less. This furnace

is equipped with a blower door interlock switch which

interrupts unit voltage when the blower door is opened for

servicing. Do not defeat this switch.

27

Furnace

Control

Remote Condensing Unit

Heating/Cooling

Room Thermostat

Y

Y1

Y1 Y2

Lo-Heat

Hi-Heat

Cool

Line-H

T4 T2

T3 T5

ECO-TECH

MOTOR

Field

Supplied

Relay

Y2

Field Wiring for GME95 /AMEH96 Furnacewith 2-Stage

Condenser

115 VOLT LINE CONNECTION OF ACCESSORIES (ELECTRONIC

AIR C LEANER)

HIGH VOLTAGE!

T

O

AVOID

PERSONAL

INJURY

OR

DEATH

DUE

TO

ELECTRICAL

SHOCK

,

DISCONNECT

ELECTRICAL

POWER

BEFORE

SERVICING

OR

CHANGING

ANY

ELECTRICAL

WIRING

.

WARNING

The furnace’s integrated control module is equipped with line voltage

accessory terminals for controlling power to an optional field-supplied

electronic air cleaner.

The accessory load specifications are as follows:

Electronic Air Cleaner 1.0 Amp maximum at 120 VAC

Turn OFF power to the furnace before installing any accessories.

Follow the air cleaner manufacturers’ instructions for locating, mount-

ing, grounding, and controlling these accessories. Accessory wiring

connections are to be made through the 1/4" quick connect terminals

provided on the furnace integrated control module. The electronic air

cleaner hot terminal is identified as EAC-H. The electronic air cleaner

neutral terminal is identified as LINE NEUTRAL. All field wiring must

conform to applicable codes. Connections should be made as shown

below.

ELECTRONIC

A

IR CLEANER

OPTIONAL

A

CCESSORIES

12 PIN

CONNECTOR

120 VAC

NEUTRAL

TERMINALS

120 VAC

HOT AND

PARK

TERMINALS

INTEGRATED

CONTROL

MODULE

Accessories Wiring

24 VOLT THERMOSTAT WIRING

NOTE: Wire routing must not interfere with circulator blower

operation, filter removal, or routine maintenance.

Low voltage connections can be made through either the right or left

side panel. Thermostat wiring entrance holes are located in the blower

compartment. Wire routing must not to interfere with circulator blower

operation, filter removal, or routine maintenance. Refer to the follow-

ing figure for thermostat connections to the integrated control module

terminal strip.

WWW

Y

YY

C

C

R

RR

GG

W

Y

C

R

G

HEATING

ROOM

THERMOSTAT

HEATING AND

COOLING ROOM

THERMOSTAT

FURNACE

FURNACE REMOTE

CONDENSING

UNIT

Thermostat Diagram

This furnace is equipped with a 40 VA transformer to facilitate use with

most cooling equipment. Consult the wiring diagram, located on the

blower compartment door, for further details of 115 Volt and 24 Volt

wiring.

GME95/AMEH96 FURNACE WITH 2-STAGE CONDENSER

FIELD WIRING

The GME95/AMEH96 model furnaces may be used with a 2-stage

outdoor air conditioner. A two stage cooling/single stage gas heat ther-

mostat is required, in addition to a field supplied relay. The relay must

have a 24VAC coil and contacts rated for up to 1 horse power at

125VAC.

1. Install the field supplied relay on the control mounting panel

near the furnace ignition control. The relay should be installed

such that the motor leads will reach the relay contact terminals.

2. Connect the “Y2” (high stage cool) thermostat terminal to one

coil terminal of the field supplied relay. Connect the other field

supplied relay coil terminal to the “C” terminal on the furnace

ignition control. Typical 18AWG thermostat wire may be used.

3. Connect the common terminal of the field supplied relay to the

“LINE-H” terminal on the furnace ignition control. Use wiring

having copper conductors only and a temperature rating of at

least 105°C.

4. Using the GME95/AMEH96 airflow tables in this manual,

determine the motor speed tap needed to deliver the required

high stage cooling airflow. Connect the selected motor speed

tap to the normally open terminal on the field supplied relay.

Use wiring having copper conductors only and a temperature

rating of at least 105°C.

5. See the following wiring schematic.

28

If it is necessary for the installer to supply additional line voltage wiring

to the inside of the furnace, the wiring must conform to all local codes,

and have a minimum temperature rating of 105°C. All line voltage wire

splices must be made inside the furnace junction box.

The integrated control module electronic air cleaner terminals (EAC)

are energized with 115 volts whenever the circulator blower is en-

ergized.

24 VOLT HUMIDIFIER

The yellow wire connected to the I.D. Blower pressure switch is

powered anytime the pressure switch is closed and provides 24

VAC humidifier control. Remove the yellow wire and connect a field

supplied jumper wire with a “piggyback” terminal to the pressure

switch terminal. Reconnect the yellow wire to the “piggyback” ter-

minal on the jumper wire and then connect the 24 VAC line of the

humidifier to the stripped end of the jumper wire. Using a wire nut

or a field-supplied quick connect terminal can make this connec-

tion. The wiring must conform to all local and national codes. Con-

nect the COM side of the humidifier to the B/C terminal on the

furnace control board (or to the COM side of the 24 VAC trans-

former). DO NOT CONNECT 115V HUMIDIFIER TO THESE TERMI-

NALS.

XII. GAS SUPPLY AND PIPING

GENERAL

The furnace rating plate includes the approved furnace gas input

rating and gas types. The furnace must be equipped to operate on

the type of gas applied. This includes any conversion kits required

for alternate fuels and/or high altitude.

T

O

PREVENT

UNRELIABLE

OPERATION

OR

EQUIPMENT

DAMAGE

,

THE

I

NLET

GAS

SUPPLY

PRESSURE

MUST

BE

AS

SPECIFIED

ON

THE

UNIT

RATING

PLATE

WITH

ALL

OTHER

HOUSEHOLD

GAS

FIRED

APPLIANCES

OPERATING

.

CAUTION

Inlet gas supply pressures must be maintained within the ranges

specified below. The supply pressure must be constant and avail-

able with all other household gas fired appliances operating. The

minimum gas supply pressure must be maintained to prevent

unreliable ignition. The maximum must not be exceeded to pre-

vent unit overfiring.

Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c.

Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c.

Inlet Gas Supply Pressure

HIGH ALTITUDE DERATE

When this furnace is installed at high altitude, the appropriate High

Altitude orifice kit must be applied. This is required due to the

natural reduction in the density of both the gas fuel and combus-

tion air as altitude increases. The kit will provide the proper design

certified input rate within the specified altitude range.

High altitude kits are purchased according to the installation alti-

tude and usage of either natural or propane gas. Contact your

distributor for a tabular listing of appropriate altitude ranges and

corresponding manufacturer’s high altitude (Natural, Propane Gas,

and/or Pressure Switch) kits.

Do not derate the furnace by adjusting the manifold pressure to a

lower pressure than specified on the furnace rating plate. The

combination of the lower air density and a lower manifold pressure

will prohibit the burner orifice from drawing the proper amount of

air into the burner. This may cause incomplete combustion, flash-

back, and possible yellow tipping.

In some areas the gas supplier may artificially derate the gas in an

effort to compensate for the effects of altitude. If the gas is artificially

derated, the appropriate orifice size must be determined based upon

the BTU/ft3 content of the derated gas and the altitude. Refer to the

National Fuel Gas Code, NFPA 54/ANSI Z223.1, and information pro-

vided by the gas supplier to determine the proper orifice size.

A different pressure switch may be required at high altitude regardless

of the BTU/ft3 content of the fuel used. Contact your distributor for a

tabular listing of appropriate altitude ranges and corresponding

manufacturer’s pressure switch kits.

PROPANE GAS CONVERSION

P

OSSIBLE

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

MAY

OCCUR

IF

THE

CORRECT

CONVERSION

KITS

ARE

NOT

INSTALLED

. T

HE

APPROPRIATE

KITS

MUST

BE

APPLIED

TO

ENSURE

SAFE

AND

PROPER

FURNACE

OPERATION

. A

LL

CONVERSIONS

MUST

BE

PERFORMED

BY

A

QUALIFIED

INSTALLER

OR

SERVICE

AGENCY

.

WARNING

This unit is configured for natural gas. The appropriate

manufacturer’s propane gas conversion kit, must be applied for

propane gas installations. Refer to the Section VIII, Propane Gas

/ High Altitude Installations section for details.

Consult the furnace Specification Sheet for a listing of appropirate

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

furnace operation. All conversions must be performed by a quali-

fied installer or service agency.

GAS VALVE

This unit is equipped with a 24 volt gas valve controlled during

furnace operation by the integrated control module. As shipped,

the valve is configured for natural gas. The valve is field convertible

for use with propane gas by replacing the regulator spring with a

propane gas spring from an appropriate manufacturer’s propane

gas conversion kit. Taps for measuring the gas supply pressure

and manifold pressure are provided on the valve.

The gas valve has a manual ON/OFF control located on the valve

itself. This control may be set only to the “ON” or “OFF” position.

Refer to the lighting instructions label or Section XIV, Startup Pro-

cedure & Adjustment for use of this control during start up and shut

down periods.

GAS PIPING CONNECTIONS

GENERAL

CAUTION

TO AVOID POSSIBLE UNSATISFACTORY OPERATION OR EQUIPMENT DAMAGE

DUE TO UNDERFIRING OF EQUIPMENT, USE THE PROPER SIZE OF

NATURAL/PROPANE GAS PIPING NEEDED WHEN RUNNING PIPE FROM THE

METER/TANK TO THE FURNACE.

When sizing a trunk line, be sure to include all appliances which

will operate simultaneously.

The gas piping supplying the furnace must be properly sized based

on the gas flow required, specific gravity of the gas, and length of

the run. The gas line installation must comply with local codes, or

in their absence, with the latest edition of the National Fuel Gas

Code, NFPA 54/ANSI Z223.1.

29

Natural Gas Capacity of Pipe

In Cubic Feet of Gas Per Hour (CFH)

Length of Nominal Black Pipe Size

Pipe in Feet 1/2" 3/4" 1" 1 1/4" 1 1/2"

10 132 278 520 1050 1600

20 92 190 350 730 1100

30 73 152 285 590 980

40 63 130 245 500 760

50 56 115 215 440 670

60 50 105 195 400 610

70 46 96 180 370 560

80 43 90 170 350 530

90 40 84 160 320 490

100 38 79 150 305 460

(Pressure 0.5 psig or less and pressure drop of 0.3" W.C.; Based on

0.60 Specific Gravity Gas)

CFH = BTUH Furnace Input

Heating Value of Gas (BTU/Cubic Foot)

To connect the furnace to the building’s gas piping, the installer must

supply a ground joint union, drip leg, manual shutoff valve, and line and

fittings to connect to gas valve. In some cases, the installer may also

need to supply a transition piece from 1/2" pipe to a larger pipe size.

The following stipulations apply when connecting gas piping. Refer to

Gas Piping Connections figure for typical gas line connections to the

furnace.

•Gas piping must be supported external to the furnace cabinet

so that the weight of the gas line does not distort the burner

rack, manifold or gas valve.

•Use black iron or steel pipe and fittings for building piping.

Where possible, use new pipe that is properly chamfered,

reamed, and free of burrs and chips. If old pipe is used, be

sure it is clean and free of rust, scale, burrs, chips, and old

pipe joint compound.

•Use pipe joint compound on male threads ONLY. Always

use pipe joint compound (pipe dope) that is APPROVED

FOR ALL GASES. DO NOT apply compound to the first two

threads.

•Use ground joint unions.

•Install a drip leg to trap dirt and moisture before it can enter

the gas valve. The drip leg must be a minimum of three

inches long.

•Install a 1/8" NPT pipe plug fitting, accessible for test gauge

connection, immediately upstream of the gas supply

connection to the furnace.

•Always use a back-up wrench when making the connection

to the gas valve to keep it from turning. The orientation of

the gas valve on the manifold must be maintained as

shipped from the factory. Maximum torque for the gas valve

connection is 375 in-lbs; excessive over-tightening may

damage the gas valve.

•Install a manual shutoff valve between the gas meter and

unit within six feet of the unit. If a union is installed, the

union must be downstream of the manual shutoff valve,

between the shutoff valve and the furnace.

•Tighten all joints securely.

•Connect the furnace to the building piping by one of the

following methods:

–Rigid metallic pipe and fittings.

–Semi-rigid metallic tubing and metallic fittings.

Aluminum alloy tubing must not be used in exterior

locations. In order to seal the grommet cabinet penetration,

rigid pipe must be used to reach the outside of the cabinet.

A semi-rigid connector to the gas piping may be used from

there.

•Use listed gas appliance connectors in accordance with their

instructions. Connectors must be fully in the same room as

the furnace.

•Protect connectors and semi-rigid tubing against physical and

thermal damage when installed. Ensure aluminum-alloy tubing

and connectors are coated to protect against external corrosion

when in contact with masonry, plaster, or insulation, or subjected

to repeated wetting by liquids such as water (except rain water),

detergents, or sewage.

MANUAL

SHUT OFF VALVE

(UPSTREAM FROM

PIPE UNION)

GROMMET

IN STANDARD

GAS LINE HOLE

GAS LINE

GROMMET IN

GAS LINE

HOLE

HEIGHT REQUIRED

BY LOCAL CODE

PIPE

UNION

DRIP LEG

MANIFOLD

BURNERSGAS VALVE

ALTERNATE

UNION

LOCATION

GROMMET IN

ALTERNATE

GAS LINE

HOLE

DRIP LEG

BURNERS

GAS VALVE

30

HORIZONTAL [UPFLOW MODEL]

MANUAL SHUT-OFF VALVE

(UPSTREAM FROM GROUND

JOINT PIPE UNION)

DRIP LEG

GROMMET IN STANDARD

GAS LINE HOLE

DRAIN TRAP

ALTER NATE GAS

LINE LOCATION

MANIFOLD GROMMET IN ALTERNATE

GAS LINE HOLE

GAS VALVE

BURNERS

A

LTE R NAT E

UNION

LOCATION

GROUND

JOINT

PIPE

UNION

GAS VALVE

BURNERS

MANIFOLD

DRAIN TRAP

ALTERNATE GAS

LINE LOCATION

GORMMET IN ALTERNATE

GAS LINE HOLE

HORIZONTAL [COUNTERFLOW]

ALTERNATE

UNION

LOCATION

GROUND

JOINT

PIPE

UNION

Gas Piping Connections

E

DGES

OF

SHEET

METAL

HOLES

MAY

BE

SHARP

. U

SE

GLOVES

AS

A

PRECAUTION

WHEN

REMOVING

HOLE

PLUGS

.

WARNING

DIRECT/STANDARD INLET PIPING

When gas piping enters directly to the gas valve through the standard

inlet hole, the installer must supply straight pipe with a ground joint

union to reach the exterior of the furnace. The rigid pipe must be long

enough to reach the outside of the cabinet to seal the grommet cabi-

net penetration. A semi-rigid connector to the gas piping can be used

outside the cabinet per local codes.

INDIRECT/ALTERNATE INLET PIPING

When gas piping enters indirectly to the gas valve through the

alternate gas inlet hole, the following 1/2 inch pipe fittings (starting

from the gas valve) to reach the outside of the cabinet must be

supplied:

•(1) Close nipple

•(1) 90 degree street elbow

•(1) 2 1/2” pipe nipple

•(1) 90 degree elbow

•Straight Pipe

•The straight pipe must be long enough to reach the outside of

the cabinet so as to seal the grommet cabinet penetration and

to install the ground joint union outside the cabinet. A semi-rigid

connector to the gas piping can be used outside the cabinet

per local codes.

GAS PIPING CHECKS

Before placing unit in operation, leak test the unit and gas connec-

tions.

T

O

AVOID

THE

POSSIBILITY

OF

EXPLOSION

OR

FIRE

,

NEVER

USE

A

MATCH

OR

OPEN

FLAME

TO

TEST

FOR

LEAKS

.

WARNING

Check for leaks using an approved chloride-free soap and water

solution, an electronic combustible gas detector, or other approved

testing methods.

NOTE: Never exceed specified pressures for testing. Higher

pressure may damage the gas valve and cause subsequent

overfiring, resulting in heat exchanger failure.

Disconnect this unit and shutoff valve from the gas supply piping

system before pressure testing the supply piping system with pres-

sures in excess of 1/2 psig (3.48 kPa).

Isolate this unit from the gas supply piping system by closing its

external manual gas shutoff valve before pressure testing supply

piping system with test pressures equal to or less than 1/2 psig

(3.48 kPa).

31

PROPANE GAS TANKS AND PIPING

I

F

THE

GAS

FURNACE

IS

INSTALLED

IN

A

BASEMENT

,

AN

EXCAVATED

AREA

OR

A

CONFINED

SPACE

,

IT

IS

STRONGLY

RECOMMENDED

TO

CONTACT

A

PROPANE

SUPPLIER

TO

INSTALL

A

GAS

DETECTING

WARNING

DEVICE

IN

CASE

OF

A

GAS

LEAK

.

• S

INCE

PROPANE

GAS

IS

HEAVIER

THAN

AIR

,

ANY

LEAKING

AS

CAN

SETTLE

IN

ANY

LOW

AREAS

OR

CONFINED

SPACES

.

• P

ROPANE

GAS

ODORANT

MAY

FADE

,

MAKING

THE

GAS

U

NDETECTABLE

EXCEPT

FOR

WITH

A

WARNING

DEVICE

.

WARNING

A gas detecting warning system is the only reliable way to detect a

propane gas leak. Rust can reduce the level of odorant in propane

gas. Do not rely on your sense of smell. Contact a local propane

gas supplier about installing a gas detecting warning system. If

the presence of gas is suspected, follow the instructions on Page

4 of this manual.

All propane gas equipment must conform to the safety standards

of the National Board of Fire Underwriters, NBFU Manual 58.

For satisfactory operation, propane gas pressure must be 11 inch

w.c. at the furnace manifold with all gas appliances in operation.

Maintaining proper gas pressure depends on three main factors:

1. Vaporization rate, depending on temperature of the liquid,

and “wetted surface” area of the container or containers.

2. Proper pressure regulation. (Two-stage regulation is

recommended for both cost and efficiency).

3. Pressure drop in lines between regulators, and between

second stage regulator and the appliance. Pipe size will

depend on length of pipe run and total load of all appliances.

Complete information regarding tank sizing for vaporization, recom-

mended regulator settings, and pipe sizing is available from most regu-

lator manufacturers and propane gas suppliers.

Since propane gas will quickly dissolve white lead and most stan-

dard commercial compounds, special pipe dope must be used.

Shellac-based compounds resistant to the actions of liquefied

petroleum gases such as Gasolac®, Stalactic®, Clyde’s® or John

Crane® are satisfactory.

Refer to the following illustration for typical propane gas installa-

tions.

200 PSIG

Maximum

5 to 15 PSIG

(20 PSIG Max.) Continuous

11" W.C.

Second Stage

Regulator

First Stage

Regulator

Propane Gas Installation (Typ.)

Sizing Between First and Second Stage Regulator*

Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting.

Capacities in 1,000 BTU/hour.

Pipe or Nominal Pipe Size

Tubing Tubing Size, O.D. Type L Schedule 40

Length, 3/8" 1/2" 5/8" 3/4" 7/8" 1/2" 3/4"

Feet

10 730 1,700 3,200 5,300 8,300 3,200 7,500

20 500 1,100 2,200 3,700 5,800 2,200 4,200

30 400 920 2,000 2,900 4,700 1,800 4,000

40 370 850 1,700 2,700 4,100 1,600 3,700

50 330 770 1,500 2,400 3,700 1,500 3,400

60 300 700 1,300 2,200 3,300 1,300 3,100

80 260 610 1,200 1,900 2,900 1,200 2,600

100 220 540 1,000 1,700 2,600 1,000 2,300

125 200 490 900 1,400 2,300 900 2,100

150 190 430 830 1,300 2,100 830 1,900

175 170 400 780 1,200 1,900 770 1,700

200 160 380 730 1,100 1,800 720 1,500

To convert to capacities at 15 psig settings - multiply by 1.130

To convert to capacities at 5 psig settings - multiply by 0.879

Propane Gas Piping Chart I

Sizing Between Single or Second Stage Regulator and Appliance*

Maximum Propane Capacities Listed are Based on 1/2" W.C. pressure drop at 11" W.C. setting.

Capacities in 1,000 BTU/hour.

Pipe or Nominal Pipe Size

Tubing Tubing Size, O.D. Type L Schedule 40

Length, 3/8" 1/2" 5/8" 3/4" 7/8" 1-1/8" 1/2" 3/4" 1" 1-1/4" 1-1/2"

Feet

10 39 92 199 329 501 935 275 567 1,071 2,205 3,307

20 26 62 131 216 346 630 189 393 732 1,496 2,299

30 21 50 107 181 277 500 152 315 590 1,212 1,858

40 19 41 90 145 233 427 129 267 504 1,039 1,559

50 18 37 79 131 198 376 114 237 448 913 1,417

60 16 35 72 121 187 340 103 217 409 834 1,275

80 13 29 62 104 155 289 89 185 346 724 1,066

100 11 26 55 90 138 255 78 162 307 630 976

125 10 24 48 81 122 224 69 146 275 567 866

150 9 21 43 72 109 202 63 132 252 511 787

200 8 19 39 66 100 187 54 112 209 439 665

250 8 17 36 60 93 172 48 100 185 390 590

*Data in accordance with NFPA pamphlet NO. 54

Propane Gas Piping Chart II

XIII. CIRCULATING AIR & FILTERS

DUCTWORK - AIR FLOW

N

EVER

ALLOW

THE

PRODUCTS

OF

COMBUSTION

,

INCLUDING

CARBON

M

ONOXIDE

,

TO

ENTER

THE

RETURN

DUCT

WORK

OR

CIRCULATION

A

IR

SUPPLY

.

WARNING

Duct systems and register sizes must be properly designed for the

CFM and external static pressure rating of the furnace. Design the

ductwork in accordance with the recommended methods of “Air Con-

ditioning Contractors of America” Manual D.

Install the duct system in accordance with Standards of the National

Board of Fire Underwriters for the Installation of Air Conditioning, Warm

Air Heating and Ventilating Systems. Pamphlets No. 90A and 90B.

A closed return duct system must be used, with the return duct con-

nected to the furnace. NOTE: Ductwork must never be attached to

the back of the furnace. Flexible joints may be used for supply and

return connections to reduce noise transmission. To prevent the blower

from interfering with combustion air or draft when a central return is

used, a connecting duct must be installed between the unit and the

utility room wall. Never us a room, closet, or alcove as a return air

chamber.

When the furnace is used in connection with a cooling unit, the fur-

nace should be installed in parallel with or on the upstream side of the

cooling unit to avoid condensation in the heating element. With a par-

allel flow arrangement, the dampers or other means used to control

the flow of air must be adequate to prevent chilled air from entering the

furnace and, if manually operated, must be equipped with means to

prevent operation of either unit unless the damper is in the full heat or

cool position.

When the furnace is installed without a cooling coil, it is recommended

that a removable access panel be provided in the outlet air duct. This

opening shall be accessible when the furnace is installed and shall be

of such a size that the heat exchanger can be viewed for visual light

inspection or such that a sampling probe can be inserted into the air-

stream. The access panel must be made to prevent air leaks when

the furnace is in operation.

When the furnace is heating, the temperature of the return air entering

the furnace must be between 55°F and 100°F.

32

CHECKING DUCT STATIC

Refer to your furnace rating plate for the maximum ESP (external

duct static) rating.

Total external static refers to everything external to the furnace cabi-

net. Cooling coils, filters, ducts, grilles, registers must all be consid-

ered when reading your total external static pressure. The supply duct

pressure must be read between the furnace and the cooling coil. This

reading is usually taken by removing the “A” shaped block off plate

from the end on the coil; drilling a test hole in it and reinstalling the

block off plate. Take a duct static reading at the test hole. Tape up the

test hole after your test is complete. The negative pressure must be

read between the filter and the furnace blower.

Too much external static pressure will result in insufficient air that can

cause excessive temperature rise. This can cause limit switch trip-

ping and heat exchanger failure.

To determine total external duct static pressure, proceed as fol-

lows;

1. With clean filters in the furnace, use a draft gauge (inclined ma-

nometer) to measure the static pressure of the return duct at the

inlet of the furnace. (Negative Pressure)

2. Measure the static pressure of the supply duct. (Positive Pres-

sure)

3. The difference between the two numbers is .4” w.c.

Example:

static reading from return duct = -.1" w.c.

static reading from supply duct = .3" w.c.

total external static pressure on this system = .4" w.c.

NOTE: Both readings may be taken simultaneously and read directly

on the manometer if so desired. If an air conditioner coil or Electronic

Air Cleaner is used in conjunction with the furnace, the readings must

also include theses components, as shown in the following drawing.

4. Consult proper tables for the quantity of air. If the total external

static pressure exceeds the maximum listed on the furnace rat-

ing plate, check for closed dampers, registers, undersized and/

or oversized poorly laid out duct work.

Checking Static Pressure

(80% Furnace Shown, 90% Similar)

BOTTOM RETURN AIR OPENING [UPFLOW MODELS]

The bottom return air opening on upflow models utilizes a “lance and

cut” method to remove sheet metal from the duct opening in the base

pan. To remove, simply press out the lanced sections by hand to ex-

pose the metal strips retaining the sheet metal over the duct opening.

Using tin snips, cut the metal strips and remove the sheet metal to

free the duct flanges. Using the scribe line along the duct flange as a

guide, unfold the duct flanges around the perimeter of the opening

using a pair of seamer pliers or seamer tongs. NOTE: Airflow area will

be reduced by approximately 18% if duct flanges are not unfolded.

This could cause performance issues and noise issues.

E

DGES

OF

SHEET

METAL

HOLES

MAY

BE

SHARP

. U

SE

GLOVES

AS

A

PRECAUTION

WHEN

REMOVING

HOLE

PLUGS

.

WARNING

CUT FOUR CORNERS

AFTER REMOVING SHEET

METAL

CUT USING TIN SNIPS

PRESS OUT BY HAND

SCRIBE LINES OUTLINING

DUCT FLANGES

Duct Flange Cut Outs

When the furnace is used in connection with a cooling unit, the fur-

nace should be installed in parallel with or on the upstream side of the

cooling unit to avoid condensation in the heating element. With a par-

allel flow arrangement, the dampers or other means used to control

the flow of air must be adequate to prevent chilled air from entering the

furnace and, if manually operated, must be equipped with means to

prevent operation of either unit unless the damper is in the full heat or

cool position. When the furnace is installed without a cooling coil, it is

recommended that a removable access panel be provided in the out-

let air duct. This opening shall be accessible when the furnace is

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

viewed for visual light inspection or such that a sampling probe can be

inserted into the air stream. The access panel must be made to pre-

vent air leaks when the furnace is in operation. When the furnace is

heating, the temperature of the return air entering the furnace must be

between 55°F and 100°F.

FILTERS - READ THIS SECTION BEFORE INSTALLING THE

RETURN A IR D UCTWORK

Filters must be used with this furnace. Discuss filter maintenance

with the building owner. Filters do not ship with this furnace, but

must be provided by the installer. Filters must comply with UL900

or CAN/ULCS111 standards. If the furnace is installed without fil-

ters, the warranty will be voided.

On upflow units, guide dimples locate the side return cutout

locations. Use a straight edge to scribe lines connecting the

dimples. Cut out the opening on these lines.

NOTE: An undersized opening will cause reduced airflow.

Refer to Minimum Filter Area tables to determine filter area require-

ments.

33

600 800 1000 1200 1400 1600 2000

040_3BXA

0453BXA 194* 194* 240 288 --- --- ---

060_3BXA

0703BXA --- 324* 324* 324* 336 --- ---

0704CXA --- --- 291* 291* 336 384 ---

0904CXA --- --- 432* 432* 432* 432* ---

080_5CXA

0905DXA --- --- --- 388* 388* 388* 480

100_5DXA

1155DXA --- --- --- 486* 486* 486* 486*

Input__Airflow

COOLING AIRFLOW REQUIREMENT (CFM)

*Minimum filter area dictated by heating airflow requirement.

Permanent Minimum Filter Area (sq. in)

[Based on a 600 ft/min filter face velocity]

600 800 1000 1200 1400 1600 2000

040_3BXA

0453BXA 388* 388* 480 576 --- --- ---

060_3BXA

0703BXA --- 647* 647* 647* 672 --- ---

0704CXA 583* 583* 672 768

0904CXA --- --- 863* 863* 863* 863* ---

080_5CXA

0905DXA --- --- --- 777* 777* 777* 960

100_5DXA

1155DXA --- --- --- 971* 971* 971* 971*

Input__Airflow

COOLING AIRFLOW REQUIREMENT (CFM)

*Minimum filter area dictated by heating airflow requirement.

Disposable Minimum Filter area (sq. in)

[Based on 300 ft/min filter face velocity]

UPRIGHT INSTALLATIONS

Depending on the installation and/or customer preference, differing

filter arrangements can be applied. Filters can be installed in the cen-

tral return register or a side panel external filter rack kit (upflows). As

an alternative a media air filter or electronic air cleaner can be used as

the requested filter.

The following figure shows possible filter locations.

FILTER

AIR FLOW

CENTRAL

RETURN

GRILLE

FILTER

SIDE RETURN

EXTERNAL FILTER

RACK KIT

(EITHER SIDE)

Possible Upright Upflow

FILTER

FILTER

AIR FLOW

FILTER

ACCESS

DOOR

CENTRAL

RETURN

GRILLE

RETURN

DUCT

FILTER

FILTER

SUPPORT

BRACKET

(PROVIDED)

Possible Upright Counterflow

Filter Locations

NOTE: Internal filter retention is not provided on this furnace.

HORIZONTAL INSTALLATIONS

Filters must be installed in either the central return register or in the

return air duct work.

XIV. STARTUP PROCEDURE & ADJUSTMENT

Furnace must have a 115 VAC power supply properly connected

and grounded. Proper polarity must be maintained for correct op-

eration. In addition to the following start-up and adjustment items,

refer to further information in Section XVI, Operational Checks.

HEAT ANTICIPATOR S ETTING

The heat anticipator in the room thermostat must be correctly ad-

justed to obtain the proper number of cycles per hour and to pre-

vent “overshooting” of the setting. Set the heat anticipator setting to

0.7 amps. Follow the thermostat manufacturer’s instructions on

how to adjust the heat anticipator setting.

DRAIN TRAP PRIMING

The drain trap must be primed prior to furnace startup. To prime, fill

the drain trap with water. This ensures proper furnace drainage

upon startup and prohibits the possibility of flue gases escaping

through the drain system. Air conditioning condensate may be drained

into the furnace trap.

FURNACE OPERATION

Purge gas lines of air prior to startup. Be sure not to purge lines into

an enclosed burner compartment. Follow NFPA 54, National Fuel Gas

Code 8.3 for proper purging methods. In Canada, follow approved

purging methods in B149.1

Check for leaks using an approved chloride-free soap and water

solution, an electronic combustible gas detector, or other approved

method. Verify that all required kits (propane gas, high altitude,

etc.) have been appropriately installed.

FURNACE STARTUP

1. Close the manual gas shutoff valve external to the furnace.

2. Turn off the electrical power to the furnace.

3. Set the room thermostat to the lowest possible setting.

4. Remove the burner compartment door.

34

NOTE: This furnace is equipped with an ignition device which

automatically lights the burner. Do not try to light the burner by

hand.

5. Move the furnace gas valve manual control to the OFF

position.

6. Wait five minutes then smell for gas. Be sure to check near

the floor as some types of gas are heavier than air.

7. If you smell gas after five minutes, immediately follow the

instructions on page 4 of this manual. If you do not smell

gas after five minutes, move the furnace gas valve manual

control to the ON position.

8. Replace the burner compartment door.

9. Open the manual gas shutoff valve external to the furnace.

10. Turn on the electrical power to the furnace.

11. Adjust the thermostat to a setting above room temperature.

12. After the burners are lit, set the thermostat to desired

temperature.

FURNACE SHUTDOWN

1. Set the thermostat to the lowest setting. The integrated control

will close the gas valve and extinguish flame. Following a 15

second delay, the induced draft blower will be de-energized.

After a 100 or 150 second delay period (field selectable), the

circulator blower will be de-energized.

2. Remove the burner compartment door and move the furnace

gas valve manual control to the OFF position.

3. Close the manual gas shutoff valve external to the furnace.

4. Replace the burner compartment door.

GAS SUPPLY PRESSURE MEASUREMENT

T

O

PREVENT

UNRELIABLE

OPERATION

OR

EQUIPMENT

DAMAGE

,

THE

I

NLET

GAS

SUPPLY

PRESSURE

MUST

BE

AS

SPECIFIED

ON

THE

UNIT

RATING

PLATE

WITH

ALL

OTHER

HOUSEHOLD

GAS

FIRED

APPLIANCES

OPERATING

.

CAUTION

The line pressure supplied to the gas valve must be within the

range specified in the Inlet Gas Supply Pressure table. The supply

pressure can be measured at the gas valve inlet pressure tap or at

a hose fitting installed in the gas piping drip leg. The supply pres-

sure must be measured with the burners operating. To measure

the gas supply pressure, use the following procedure.

INLET OUTLET

Gas Valve On/Off

Selector Switch

White-Rodgers Model 36G54 (Two-Stage)

Inlet

Pressure

Tap

Low Fire

Regulator

Adjust

Manometer

Manometer

Hose

High Fire Regulator

Adjust Regulator

Vent

Outlet

Pressure Boss

Open to

Atmosphere

On/Off Switch

High Fire Coil

Terminal (HI)Coaxial Coil

Terminal (M)

Common

Terminal(C)

White-Rodgers Model 36G54 Connected to Manometer

Gas Valve On/Off

Selector Switch

Regulator

Vent

High Fire

Regulator

Adjust

Low Fire

Regulator

Adjust

i

Manometer

Manometer

Hose

Common

Terminal(C)

High Fire Coil

Terminal (HI)

Low Fire Coil

Terminal (LO)

Inlet Pressure Tap

1/8 NPT

Open to

Atmosphere

Outlet Pressure Tap

1/8 NPT

Honeywell Model VR9205 Connected to Manometer

1. Turn OFF gas to furnace at the manual gas shutoff valve

external to the furnace.

2. Connect a calibrated water manometer (or appropriate gas

pressure gauge) at either the gas valve inlet pressure tap

or the gas piping drip leg. See Honeywell VR9205 gas valve

figure or White-Rodgers 36G54 gas valve figure for location

of inlet pressure tap.

35

NOTE: If measuring gas pressure at the drip leg or Honeywell VR9205

gas valve, a field-supplied hose barb fitting must be installed prior to

making the hose connection. If using the inlet pressure tap on the

White-Rodgers 36G54 gas valve, then use the 36G Valve Pressure

Check Kit, Goodman Part No. 0151K00000S.

3. Turn ON the gas supply and operate the furnace and all other

gas consuming appliances on the same gas supply line.

4. Measure furnace gas supply pressure with burners firing.

Supply pressure must be within the range specified in the

Inlet Gas Supply Pressure table.

Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c.

Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c.

Inlet Gas Supply Pressure

If supply pressure differs from table, make the necessary adjust-

ments to pressure regulator, gas piping size, etc., and/or consult

with local gas utility.

5. Turn OFF gas to furnace at the manual shutoff valve and

disconnect manometer. Reinstall plug before turning on

gas to furnace.

6. Turn OFF any unnecessary gas appliances stated in step

3.

Gas Line

Gas

Shutoff

Valve

Gas Line

To Furnace

Drip Leg Cap

With Fitting

Manometer Hose

Manometer

Open To

Atmosphere

Measuring Inlet Gas Pressure (Alt. Method)

GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT

T

O



PREVENT



UNRELIABLE



OPERATION



OR



EQUIPMENT



DAMAGE

,

THE



GAS



MANIFOLD



PRESSURE



MUST



BE



AS



SPECIFIED



ON



THE



UNIT



RATING



PLATE

.O

NLY



MINOR



ADJUSTMENTS



SHOULD



BE



MADE



BY



ADJUSTING



THE



GAS



VALVE



PRESSURE



REGULATOR

.

CAUTION

Only small variations in gas pressure should be made by adjust-

ing the gas valve pressure regulator. The manifold pressure must

be measured with the burners operating. To measure and adjust

the manifold pressure, use the following procedure.

1. Turn OFF gas to furnace at the manual gas shutoff valve

external to the furnace.

2. Turn off all electrical power to the system.

3. Outlet pressure tap connections:

a. Honeywell VR9205 valve: Remove the outlet pressure

tap plug. Install an 1/8" NPT hose barb fitting into the outlet

pressure tap.

b. White-Rodgers 36G54 valve: Back outlet pressure test screw

(inlet/outlet pressure tap) out one turn (counterclockwise,

not more than one turn).

4. Attach a hose and manometer to the outlet pressure barb fitting

(Honeywell valve) or outlet pressure tap (White-Rodgers valve).

5. Turn ON the gas supply.

6. Turn on power and close thermostat “R” and “W1” contacts to

provide a call for low stage heat.

7. Measure the gas manifold pressure with burners firing. Adjust

manifold pressure using the Manifold Gas Pressure table

shown below.

8. Remove regulator cover screw from the low (LO) outlet

pressure regulator adjust tower and turn screw clockwise

to increase pressure or counterclockwise to decrease

pressure. Replace regulator cover screw.

9. Close thermostat “R” and “W2” contacts to provide a call for

high stage heat.

10. Remove regulator cover screw from the high (HI) outlet

pressure regulator adjust tower and turn screw clockwise

to increase pressure or counterclockwise to decrease

pressure. Replace regulator cover screw.

11. Turn off all electrical power and gas supply to the system.

12. Remove the manometer hose from the hose barb fitting or

outlet pressure tap.

13. Replace outlet pressure tap:

a. Honeywell VR9205 valve: Remove the 1/8" NPT hose barb

fitting from the outlet pressure tap. Replace the outlet

pressure tap plug and seal with a high quality thread

sealer.

b. White-Rodgers 36G54 valve: Turn outlet pressure test

screw in to seal pressure port (clockwise, 7 in-lb

minimum).

14. Turn on electrical power and gas supply to the system.

15. Close thermostat contacts “R” and “W1/W2” to energize the

valve.

Using a leak detection solution or soap suds, check for leaks at

outlet pressure boss plug (Honeywell valve) or screw (White-Rodg-

ers valve). Bubbles forming indicate a leak. SHUT OFF GAS AND

REPAIR ALL LEAKS IMMEDIATELY!

NOTE: For gas to gas conversion, consult your dealer for

appropriate conversion.

Gas Rate Range Nominal

Low Stage 1.7 to 2.3" w.c. 2.0" w.c.

High Stage 3.2 to 3.8" w.c. 3.5" w.c.

Low Stage 5.7 to 6.3" w.c. 6.0" w.c.

High Stage 9.7 to 10.3" w.c. 10.0" w.c.

Manifold Gas Pressure

Natural

Propane

GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY)

The gas input rate to the furnace must never be greater than that

specified on the unit rating plate. To measure natural gas input

using the gas meter, use the following procedure.

1. Turn OFF the gas supply to all other gas-burning appliances

except the furnace.

2. While the furnace is operating, time and record one complete

revolution of the smallest gas meter dial.

36

3. Calculate the number of seconds per cubic foot (sec/ ft3) of

gas being delivered to the furnace. If the dial is a one cubic

foot dial, divide the number of seconds recorded in step 2

by one. If the dial is a two cubic foot dial, divide the number

of seconds recorded in step 2 by two.

4. Calculate the furnace input in BTUs per hour (BTU/ hr). Input

equals the installation’s gas heating value multiplied by a

conversion factor (hours to seconds), divided by the number

of seconds per cubic foot. The measured input must not be

greater than the input indicated on the unit rating plate.

EXAMPLE:

Installation’s gas heating (HTG) value: 1,000 BTU/ft3

(Obtained from gas supplier)

Installation’s seconds per cubic foot: 34 sec/ ft3

Conversion Factor (hours to seconds): 3600 sec/hr

Input = (Htg. value x 3600) ÷ seconds per cubic foot

Input = (1,000 BTU/ft3 x 3600 sec/hr) ÷ 34 sec/ ft3

Input = 106,000 BTU/hr

This measured input must not be greater than the input

indicated on the unit rating plate.

5. Turn ON gas and relight appliances turned off in step 1.

Ensure all the appliances are functioning properly and that

all pilot burners are operating.

TEMPERATURE RISE

Temperature rise must be within the range specified on the unit

rating plate. An incorrect temperature rise may result in condens-

ing in or overheating of the heat exchanger. An airflow and tem-

perature rise table is provided in the Specification Sheet applicable

to your model.

Determine and adjust temperature rise as follows:

1. Operate furnace with burners firing for approximately ten

minutes. Ensure all registers are open and all duct

dampers are in their final (fully or partially open) position.

2. Place thermometers in the return and supply ducts as close

to the furnace as possible. Thermometers must not be

influenced by radiant heat by being able to “see” the heat

exchanger.

SUPPLY

AIR

RETURN

AIR

Temperature Rise Measurement

3. Subtract the return air temperature from the supply air

temperature to determine the air temperature rise. Allow

adequate time for thermometer readings to stabilize.

4. Adjust temperature rise by adjusting the circulator blower speed.

Increase blower speed to reduce temperature rise. Decrease

blower speed to increase temperature rise. Refer to Startup

Procedure and Adjustment -Circulator Blower Speeds for speed

changing details.

CIRCULATOR BLOWER SPEEDS

T

O

PREVENT

PREMATURE

FAILURE

OF

HEAT

EXCHANGER

,

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

,

DO

NOT

ADJUST

THE

LIMIT

CONTROL

(

FACTORY

-

SET

).

WARNING

This furnace is equipped with a multi-speed circulator blower. This

blower provides ease in adjusting blower speeds. The Specifica-

tion Sheet applicable to your model provides an airflow table, show-

ing the relationship between airflow (CFM) and external static pres-

sure (E.S.P.), for the proper selection of heating and cooling speeds.

The cooling blower speed is shipped set on HIGH, and the heating

blower speed is set as indicated in the Specification Sheet appli-

cable to your model. These blower speeds should be adjusted by

the installer to match the installation requirements so as to provide

the correct heating temperature rise and correct cooling CFM.

To adjust the circulator blower speed, proceed as follows:

1. Turn OFF power to the furnace.

2. Select the heating and cooling blower speeds that match

the installation requirements from the airflow table in the

Specification Sheet.

3. Relocate desired motor leads to the circulator blower heat

and cool speed terminals on the integrated control module.

(Terminals are identified as LO HEAT-H, HI HEAT-H and

COOL-H (hot)). If a heating speed and the cooling blower

speed are the same, a jumper wire must be used between

the heat and cool terminals.

4. Connect all unused blower motor leads to the “PARK”

terminals on the integrated control module. Any leads not

connected to the “PARK” terminals must be taped.

5. Turn ON power to furnace.

6. Verify proper temperature rise as outlined in Section XIV,

Startup Procedure and Adjustment - Temperature Rise.

LOW RED

MEDIUM LOW ORANGE

MEDIUM LOW BLUE

HIGH BLACK

COMMON/NEUTRAL WHITE

T1-LOW YELLOW

T2-MED-LOW RED

T3-MED ORANGE

T4-MED-HI BLUE

T5-HI BLACK

COMMON\NEUTRAL WHITE

*MH95, ACSH96, GCH95, GCH9

Circulator Blower Speeds

AMEH96, GME95

Circulator Blower Speeds

37

CIRCULATOR BLOWER FAN TIMING ADJUSTMENT

NOTE: Items in this section refer to the air circulator blower fan

NOT to the induced draft blower. The induced draft blower timing

sequence is not adjustable. The circulator blower fan timing is

adjustable only on models with optional “heating fan OFF delay”

adjustment pins or switches. It is NOT adjustable in any other

circumstances.

As shipped, the circulator blower fan will remain on for 150 seconds

after the gas valve closes. When a call for cooling occurs, the circu-

lator fan comes on and remains on for 45 seconds after the call for

cooling ends. During normal heating operation, the circulator fan will

come on approximately 34 seconds after the gas valve opens.

SECOND

DELAY SECOND

DELAY

Switch viewed in an upflow installation.

Adjustment Switch

SETTING FURNACE OPERATING MODE

This furnace is designed to operate with either a single gas input rate

or with two distinct gas input rates. The Mode DIP switch is used to

select the single gas input rate or two distinct input rates.

Setting the Mode switch to “1 STG” forces the furnace to operate at

the furnace’s highest input rate only. Operation is as described

under Sequence of Operation (Integrated Ignition Control) – Mode

DIP Switch is set to “1 STG” position.

Setting the Mode switch to “2 STG” allows the furnace to operate at

the furnace’s highest input AND at an input rate that is 75% of the

highest input rate. For this mode of operation, the furnace oper-

ates at the low input rate for a pre-determined time period then

steps to the high input rate. Operation is as described under Se-

quence of Operation (Integrated Ignition Control) – Mode DIP Switch

is set to “2 STG” position.

The time period is determined by the 2nd Stg Dly DIP switch. Setting

the 2nd Stg Dly DIP switch to 5 minutes fixes the delay period at 5

minutes. Setting the 2nd Stg Dly DIP switch to Auto enables an

algorithm that calculates a delay period based on the heating cycle

time and the total cycle time. The delay period can range from 1

minute to 12 minutes.

NOTE: The ACSH, AMH, AMEH, GCH, GDH, GMH and GME hybrid

furnaces require a single stage thermostat. These furnaces utilize a

control board with single stage or two stage capability. The second

stage feature is established by setting dip switch #2 on the board,

either one stage or two stage. All of the second stage timing is then

controlled by dipswitch 3 on the circuit board.

O

N

OFF

2

ON

OFF

3

SECOND

STAGE

ONLY

5

MINUTES

ON

OFF

1

150

SECOND

DELAY

100

SECOND

DELAY

1-STAGE

2-STAGE

HEAT OFF

DELAY

MODE

AUTO

XV. NORMAL SEQUENCE OF OPERATION

POWER UP

The normal power up sequence is as follows:

•115 VAC power applied to furnace.

•Integrated control module performs internal checks.

•Integrated control module LED will light.

•Integrated control module monitors safety circuits

continuously.

•Furnace awaits call from thermostat.

HEATING MODE

(MODE DIP SWITCH IS SET TO “1 STG” POSITION)

The normal operational sequence in heating mode is as follows:

•R and W thermostat contacts close, initiating a call for heat.

•Integrated control module performs safety circuit checks.

•Induced draft blower is energized for 15 second pre-purge

period causing pressure switch contacts to close.

•Igniter warm up begins after 15 second prepurge expires.

•Low and high stage gas valves open at end of igniter warm

up period, delivering gas to burners and establishing flame.

•Integrated control module monitors flame presence. Gas

valve will remain open only if flame is detected.

•Circulator blower is energized on high heat speed following

a fixed thirty second blower on delay. Electronic air cleaner

terminals are energized with circulator blower.

•Furnace operates; integrated control module monitors

safety circuits continuously.

•R and W thermostat contacts open, completing the call for

heat.

•Gas valve closes, extinguishing flame.

•Induced draft blower is de-energized following a fifteen

second post purge.

• The circulator blower remains at high heat speed for thirty

seconds. The circulator blower then switches to low heat

speed for the remainder of the selected heat off delay period.

For example, the selected heat off delay period is 150 seconds.

The circulator blower operates at high heat for 30 seconds

and at low speed for 150 - 30 = 120 seconds.

38

(MODE DIP SWITCH IS SET TO “2 STG” POSITION)

The normal operational sequence in sequence is as follows:

•R and W thermostat contacts close, initiating a call for heat.

•Integrated control module performs safety circuit checks.

•Induced draft blower is energized for 15 second prepurge

period causing pressure switch contacts to close.

•Igniter warm up begins after 15 second prepurge expires.

•Low and high-stage gas valves open at end of igniter warm

up period, delivering gas to burners and establishing flame.

•High-stage gas valve closes after five seconds; low-stage

gas valve remains open.

•Integrated control module monitors flame presence. Gas valve

will remain open only if flame is detected.

•Circulator blower is energized on low heat speed following a

fixed thirty second blower on delay. Electronic air cleaner

terminals are energized with circulator blower.

•Furnace is now operating in low-stage heating mode.

•Furnace operates; integrated control module monitors

safety circuits continuously.

•If low-stage delay period expires, control will shift operation

from low-stage heating mode operation to high-stage

heating mode operation. Control will energize circulator

blower high heat speed and high stage gas valve.

•Furnace is now operating in high-stage heating mode.

•R and W thermostat contacts open, completing the call for

heat.

•Induced draft blower is de-energized following a fifteen

second post purge.

•Circulator blower is de-energized following a heat off delay

period (selectable 100 or 150 seconds; factory set at 150

seconds).

If the furnace is operating in the low-stage heating mode

when thermostat contacts open, circulator remains at low

heat speed for the selected delay off period.

If the furnace is operating in high-stage heating mode when

the thermostat contacts open, the circulator blower remains

at high heat speed for thirty seconds. The circulator blower

then switches to low heat speed for the remainder of the

selected heat off delay period. For example, the selected

heat off delay period is 150 seconds. The circulator blower

operates at high heat for 30 seconds and at low speed for

150 - 30 = 120 seconds.

•Furnace awaits the next call from thermostat.

COOLING MODE

The normal operational sequence in cooling mode is as follows:

•R and Y thermostat contacts close, initiating a call for cool.

•Integrated control module performs safety circuit checks.

•Outdoor fan and compressor are energized.

•Circulator blower is energized on cool speed following a fixed

five second on delay. Electronic air cleaner terminals are

energized with circulator blower.

•Furnace circulator blower and outdoor cooling unit run,

integrated control module monitors safety circuits

continuously.

•R and Y thermostat contact open, completing the call for cool.

•Outdoor fan and compressor are de-energized.

•Circulator blower is de-energized following a fixed forty five

second cool off delay period. Electronic air cleaner terminals

are de-energized.

•Furnace awaits the next call from thermostat.

FAN ONLY MODE

The normal operational sequence in fan only mode is as follows:

•R and G thermostat contacts close, initiating a call for fan.

•Integrated control module performs safety circuit checks.

•Circulator blower is energized on low heat speed. Electronic

air cleaner terminals are energized.

•Circulator blower runs, integrated control module monitors

safety circuits continuously.

•R and G thermostat contacts open, completing the call for

fan.

•Circulator blower is de-energized. Electronic air cleaner

terminals are de-energized.

•Furnace awaits the next call from thermostat.

XVI. OPERATIONAL CHECKS

BURNER FLAME

The burner flames should be inspected with the burner compart-

ment door installed. A sight glass is provided for inspection pur-

poses. Flames should be stable, quiet, soft, and blue (dust may

cause orange tips but they must not be yellow). Flames should

extend directly outward from the burners without curling, floating, or

lifting off. Flames must not impinge on the sides of the heat ex-

changer firing tubes.

Check the

Burner Flames for:

1. Stable, soft and blue.

2. Not curling, floating

or lifting off.

Burner Flame

XVII. SAFETY CIRCUIT DESCRIPTION

GENERAL

A number of safety circuits are employed to ensure safe and proper

furnace operation. These circuits serve to control any potential

safety hazards and serve as inputs in the monitoring and diagno-

sis of abnormal function. These circuits are continuously moni-

tored during furnace operation by the integrated control module.

INTEGRATED CONTROL MODULE

The integrated control module is an electronic device which, if a po-

tential safety concern is detected, the module will take the necessary

precautions and provide diagnostic information through an LED.

39

PRIMARY LIMIT

The primary limit control is located on the partition panel and monitors

heat exchanger compartment temperatures. It is a normally-closed

(electrically), automatic reset, temperature-activated sensor. The limit

guards against the overheating as a result of insufficient conditioned

air passing over the heat exchanger.

AUXILIARY LIMIT

The auxiliary limit control(s) are located on or near the circulator blower

and monitors heat exchanger compartment temperatures. They are

a normally-closed (electrically), manual-reset, temperature activated

sensors. These limits guard against overheating as a result of insuf-

ficient conditioned air passing over the heat exchanger.

ROLLOUT LIMIT

The rollout limit control(s) are mounted on the burner/manifold assembly

and monitor the burner flame. They are normally-closed (electrically),

manual-reset, temperature-activated sensors. These limits guard

against burner flames not being properly drawn into the heat exchanger.

PRESSURE SWITCHES

The pressure switches are normally-open (closed during operation),

single-pole single-throw, negative air pressure-activated switches.

They monitor the airflow (combustion air and flue products) through

the heat exchanger via pressure taps located on the induced draft

blower and the coil front cover. These switches guard against insuffi-

cient airflow (combustion air and flue products) through the heat ex-

changer and/or blocked condensate drain conditions.

FLAME SENSOR

The flame sensor is a probe mounted to the burner/manifold assem-

bly which uses the principle of flame rectification to determine the pres-

ence or absence of flame.

XVIII. TROUBLESHOOTING

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

NOTE: Discharge body’s static electricity before touching 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 uninstalled (ungrounded) furnaces.

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

integrated control module or any wire connected to the control

prior to discharging your body’s electrostatic charge to ground.

2. Firmly touch a clean, unpainted, metal surface of the furnaces

near the control. Any tools held in a person’s hand during

grounding will be discharged.

3. Service integrated control module or connecting wiring following

the discharge process in step 2. Use caution not to recharge

your body with static electricity; (i.e., do not move or shuffle

your feet, do not touch ungrounded objects, etc.). If you come

in contact with an ungrounded object, repeat step 2 before

touching control or wires.

4. Discharge your body to ground before removing a new control

from its container. Follow steps 1 through 3 if installing the

control on a furnace. Return any old or new controls to their

containers before touching any ungrounded object.

DIAGNOSTIC CHART

HIGH VOLTAGE!

T

O

AVOID

PERSONAL

INJURY

OR

DEATH

DUE

TO

ELECTRICAL

SHOCK

,

DISCONNECT

ELECTRICAL

POWER

BEFORE

P

ERFORMAING

ANY

SERVICE

OR

MAINTENANCE

.

WARNING

Refer to the Troubleshooting Chart at the end of this manual for assis-

tance in determining the source of unit operational problems. The red

diagnostic LED blinks to assist in troubleshooting the unit. The num-

ber of blinks refers to a specific fault code.

FAULT RECALL

The ignition control is equipped with a momentary pushbutton switch

that can be used to display on the diagnostic LED the last five faults

detected by the control. The control must be in Standby Mode (no ther-

mostat inputs) to use the feature. Depress the pushbutton switch for

approximately 2 seconds. Release the switch when the LED is turned

off. The diagnostic LED will then display the flash codes associated

with the last five detected faults. The order of display is the most re-

cent fault to the least recent fault.

RESETTING FROM LOCKOUT

Furnace lockout results when a furnace is unable to achieve ignition

after three attempts during a single call for heat. It is characterized by

a non-functioning furnace and a one flash diagnostic LED code. If the

furnace is in “lockout”, it will (or can be) reset in any of the following

ways.

1. Automatic reset. The integrated control module will

automatically reset itself and attempt to resume normal

operations following a one hour lockout period.

2. Manual power interruption. Interrupt 115 volt power to the

furnace for 1 - 20 seconds.

3. Manual thermostat cycle. Lower the thermostat so that

there is no longer a call for heat then reset to previous setting.

Interrupt thermostat signal to the furnace for 1 - 20 seconds.

NOTE: If the condition which originally caused the lockout still

exists, the control will return to lockout. Refer to Troubleshooting -

Diagnostic Chart for aid in determining the cause.

40

XIX. MAINTENANCE

HIGH VOLTAGE!

T

O

AVOID

PERSONAL

INJURY

OR

DEATH

DUE

TO

ELECTRICAL

SHOCK

,

DISCONNECT

ELECTRICAL

POWER

BEFORE

PERFORMING

ANY

MAINTENANCE

. I

F

YOU

MUST

HANDLE

THE

IGNITER

,

HANDLE

WITH

CARE

. T

OUCHING

THE

IGNITER

ELEMENT

WITH

BARE

FINGERS

,

ROUGH

HANDLING

OR

VIBRATION

COULD

DAMAGE

THE

IGNITER

RESULTING

IN

PREMATURE

FAILURE

. O

NLY

A

QUALIFIED

SERVICER

SHOULD

EVER

HANDLE

THE

IGNITER

.

WARNING

ANNUAL INSPECTION

The furnace should be inspected by a qualified installer, or service

agency at least once per year. This check should be performed at the

beginning of the heating season. This will ensure that all furnace com-

ponents are in proper working order and that the heating system func-

tions appropriately. Pay particular attention to the following items. Re-

pair or service as necessary.

•Flue pipe system. Check for blockage and/or leakage. Check

the outside termination and the connections at and internal

to the furnace.

•Heat exchanger. Check for corrosion and/or buildup within

the heat exchanger passageways.

•Burners. Check for proper ignition, burner flame, and flame

sense.

•Drainage system. Check for blockage and/or leakage.

Check hose connections at and internal to furnace.

•Wiring. Check electrical connections for tightness and/or

corrosion. Check wires for damage.

•Filters.

FILTERS

T

O

ENSURE

PROPER

UNIT

PERFORMANCE

,

ADHERE

TO

THE

FILTER

SIZES

GIVEN

IN

THE

RECOMMENDED

M

INIMUM

F

ILTER

S

IZE

T

ABLE

OR

S

PECIFICATION

S

HEET

APPLICABLE

TO

YOUR

MODEL

*

CAUTION

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

applicable Specification Sheet referred to in this manual.

MAINTENANCE

Improper filter maintenance is the most common cause of inad-

equate heating or cooling performance. Filters should be cleaned

(permanent) or replaced (disposable) every two months or as re-

quired. When replacing a filter, it must be replaced with a filter of

the same type and size.

FILTER REMOVAL

Depending on the installation, differing filter arrangements can be

applied. Filters can be installed in either the central return register

or a side panel external filter rack (upflow only). A media air filter or

electronic air cleaner can be used as an alternate filter. Follow the

filter sizes given in the Recommended Minimum Filter size table to

ensure proper unit performance.

To remove filters from an external filter rack in an upright upflow instal-

lation, follow the directions provided with external filter rack kit.

HORIZONTAL U NIT F ILTER R EMOVAL

Filters in horizontal installations are located in the central return regis-

ter or the ductwork near the furnace.

To remove:

1. Turn OFF electrical power to furnace.

2. Remove filter(s) from the central return register or ductwork.

3. Replace filter(s) by reversing the procedure for removal.

4. Turn ON electrical power to furnace.

MEDIA AIR FILTER OR ELECTRONIC AIR CLEANER REMOVAL

Follow the manufacturer’s directions for service.

BURNERS

Visually inspect the burner flames periodically during the heating sea-

son. Turn on the furnace at the thermostat and allow several minutes

for flames to stabilize, since any dislodged dust will alter the flames

normal appearance. Flames should be stable, quiet, soft, and blue

(dust may cause orange tips but they must not be yellow). They should

extend directly outward from the burners without curling, floating, or

lifting off. Flames must not impinge on the sides of the heat exchanger

firing tubes.

INDUCED DRAFT AND CIRCULATOR BLOWERS

The bearings in the induced draft blower and circulator blower motors

are permanently lubricated by the manufacturer. No further lubrication

is required. Check motor windings for accumulation of dust which

may cause overheating. Clean as necessary.

CONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER

ONLY)

Annually inspect the drain tubes, drain trap, and field-supplied drain

line for proper condensate drainage. Check drain system for hose

connection tightness, blockage, and leaks. Clean or repair as

necessary.

FLAME SENSOR (QUALIFIED SERVICER ONLY)

Under some conditions, the fuel or air supply can create a nearly

invisible coating on the flame sensor. This coating acts as an

insulator causing a drop in the flame sense signal. If the flame

sense signal drops too low the furnace will not sense flame and

will lock out. The flame sensor should be carefully cleaned by a

qualified servicer using emery cloth or steel wool. Following clean-

ing, the flame sense signal should be 1 to 6 microamps at 115

volts.

IGNITER (QUALIFIED SERVICER ONLY)

If the igniter and the surrounding air are at about 70°F and the

igniter wires are not connected to any other electrical components,

the resistance of the igniter should not exceed 75 ohms. If it does,

the igniter should be replaced.

FLUE PASSAGES (QUALIFIED SERVICER ONLY)

The heat exchanger flue passageways should be inspected at the

beginning of each heating season. If necessary, clean the pas-

sageways as outlined below.

1. Turn OFF the electrical power and gas supply to the furnace.

2. Disconnect the gas line and remove the burner/ manifold

assembly by removing the screws securing the assembly

to the partition panel.

3. Disconnect the flue pipe system from the induced draft

blower.

4. Remove the induced draft blower and, drain and pressure

tap hoses from the recuperator coil front cover.

5. Remove the recuperator coil front cover to expose the coil tubes

and turbulators.

41

6. Remove the recuperator coil turbulators individually by slowly

pulling each turbulator forward firmly.

7. Clean the recuperator coil tubes using a long handle wire brush,

such as a gun cleaning brush.

8. Clean the primary heat exchanger tubes using a wire brush

attached to a length of high grade stainless steel cable, such

as drain cleanout cable. Attach a variable speed reversible

drill to the other end of the cable. Slowly rotate the cable with

the drill and insert it into one of the heat exchanger tubes.

While reversing the drill, work the cable in and out several times

to obtain sufficient cleaning. Repeat for each tube.

9. Clean residue from furnace using a vacuum cleaner.

10. Replace the parts removed in the previous steps in reverse

order.

11. Turn on electrical power and gas to furnace. Check for leaks

and proper unit operation.

12. Severe heat exchanger fouling is an indication of an operational

problem. Perform the checks listed in Section XIV, Startup

Procedure and Adjustments to reduce the chances of repeated

fouling.

XX. BEFORE LEAVING AN INSTALLATION

•Cycle the furnace with the thermostat at least three times.

Verify cooling and fan only operation.

•Review the Owner’s Manual with the homeowner and

discuss proper furnace operation and maintenance.

•Leave literature packet near furnace.

XXI. REPAIR & REPLACEMENT PARTS

•When ordering any of the listed functional parts, be sure to

provide the furnace model, manufacturing, and serial

numbers with the order.

•Although only functional parts are shown in the parts list, all

sheet metal parts, doors, etc. may be ordered by description.

•Parts are available from your distributor.

Functional Parts List-

Gas Valve Blower Motor

Gas Manifold Blower Wheel

Natural Gas Orifice Blower Mounting Bracket

Propane Gas Orifice Blower Cutoff

Igniter Blower Housing

Flame Sensor Capacitor

Rollout Limit Switch Heat Exchanger

Primary Limit Switch Coil Front Cover

Auxiliary Limit Switch Integrated Control Module

Pressure Switch Transformer

Induced Draft Blower

Door Switch

42

1Integrated control module will automatically attempt to reset from lockout after one hour.

TROUBLESHOOTING CHART

• Furnace lockout due

to an excessive

number of ignition

“retries” (3 total)1.

• Locate and correct gas

interruption.

• Check front cover

pressure switch

operation (hose, wiring,

contact operation).

Correct if necessary.

• Replace or realign

igniter.

• Check flame sense

signal. Sand sensor if

coated and/or oxidized.

• Check flue piping for

blockage, proper

length, elbows, and

termination.

• Verify proper induced

draft blower perfor-

mance.

• Turn power

OFF prior to

repair.

• Igniter is

fragile, handle

with care.

• Sand flame

sensor with

emery cloth.

• See “Vent/Flue

Pipe” section

for piping

details.

• Furnace fails to operate.

• Integrated control module

diagnostic LED is

flashing ONE (1) flash.

1

1 FLASH

• Failure to establish flame.

Cause may be no gas to

burners, front cover

pressure switch stuck open,

bad igniter or igniter

alignment, improper orifices,

or coated/oxidized or

improperly connected flame

sensor.

• Loss of flame after establish-

ment. Cause may be

interrupted gas supply, lazy

burner flames (improper gas

pressure or restriction in flue

and/or combustion air

piping), front cover pressure

switch opening, or improper

induced draft blower

performance.

• Pressure switch

circuit is closed.

• Induced draft

blower is not

operating.

• Replace induced draft

blower pressure switch.

• Repair short.

• Turn power OFF

prior to repair.

• Replace pressure

switch with proper

replacement part.

• Furnace fails to operate.

• Integrated control module

diagnostic LED is

flashing TWO (2) flashes.

2

2 FLASHES

• Induced draft blower

pressure switch contacts

sticking.

• Shorts in pressure switch

circuit.

• Inspect pressure

switch hose. Repair, if

necessary,

• Inspect flue and/or inlet

air piping for blockage,

proper length, elbows,

and termination. Check

drain system. Correct

as necessary.

• Correct pressure switch

setpoint or contact

motion.

• Tighten or correct

wiring connection.

• Pressure switch hose

blocked, pinched or

connected improperly.

• Blocked flue and/or inlet air

pipe, blocked drain system,

or weak induced draft

blower.

• Incorrect pressure switch

setpoint or malfunctioning

switch contacts.

• Loose or improperly

connected wiring.

• Pressure switch

circuit not closed.

• Induced draft blower

is operating.

• Induced draft blower runs

continuously with no

further furnace operation.

• Integrated control module

diagnostic LED is

flashing THREE (3)

flashes.

3

3 FLASHES

• Turn power

OFF prior to

repair.

• Replace

pressure

switch with

proper

replacement

part.

Fault Description(s) Possible Causes

Associated

LED Code2

• Normal Operation •Normal Operation • None •Normal Operation

ON

CONTINUOUS

ON

• No 115 volt power to

furnace, or no 24 volt

power to integrated

control module.

• Blown fuse or circuit

breaker.

• Integrated control

module has an

internal fault.

• Manual disconnect switch

OFF, door switch open, or

24 volt wires improperly

connected or loose.

• Blown fuse or circuit

breaker.

• Integrated control module

has an internal fault.

• Assure 115 and 24 volt

power to furnace

integrated control module.

• Check integrated control

module fuse (3A).

Replace if necessary.

• Check for possible shorts

in 115 and 24 volt circuits.

Repair as necessary.

• Replace bad integrated

control module.

• Turn power OFF

prior to repair.

• Replace

integrated

control module

fuse with 3A

automotive fuse.

• Read precautions

in “Electrostatic

Discharge” section

of manual.

• Furnace fails to operate.

• Integrated control module

diagnostic LED provides

no signal.

NONE

Fault Description(s) Possible Causes Corrective Action Cautions and Notes

Symptoms of Abnormal

Operation

Associated

LED Code2

2LED Flash code will cease if power to the control module is interrupted through the disconnect or door switch.

• LED is Steady On.

43

2 LED Flash code will cease if power to the control module is interrupted through the disconnect or door switch.

TROUBLESHOOTING CHART

4

4 FLASHES

• Circulator blower runs

continuously. No furnace

operation.

• Integrated control module

diagnostic LED is flashing

FOUR (4) flashes.

6

6 FLASHES

7

7 FLASHES

• Furnace fails to operate.

• Integrated control module

diagnostic LED is flashing

SIX (6) flashes.

• No furnace operation.

• Normal furnace

operation.

• Integrated control module

diagnostic LED is

flashing SEVEN (7)

flashes.

• Rollout limit open.

• Integrated control

module fuse is

blown.

• Flame sense

microamp signal is

low.

• Flame sensor is coated/

oxidized.

• Flame sensor incorrectly

positioned in burner

flame.

• Lazy burner flame due to

improper gas pressure or

combustion air.

• Sand flame sensor.

• Inspect for proper sensor

alignment.

• Compare current gas

pressure to rating plate

info. Adjust as needed.

• Turn power OFF

prior to repair.

• Clean flame sensor

with steel wool.

• See “Vent/Flue

Pipe” section for

piping details.

• See rating plate for

proper gas

pressure.

• See “Vent/Flue

Pipe” section for

piping details.

• Replace induced

draft blower with

proper replace-

ment part.

• Replace inte-

grated control

module fuse with

3A automotive

fuse.

• Read precautions

in “Electrostatic

Discharge”

section of manual.

• Replace rollout

limit with correct

replacement part.

• Primary limit

circuit is open.

• Induced draft blower runs

continuously. No furnace

operation.

• Integrated control module

diagnostic LED is flashing

continuously.

C

CONTINUOUS

FLASHING

• Polarity of 115

or 24 volt

power is

reversed.

• Polarity of 115 volt AC

power to furnace or

integrated control module

is reversed.

• Red and blue wires to

transformer are reversed.

• Poor unit ground.

• Review wiring diagram to

correct polarity.

• Verify proper ground.

Correct if necessary.

• Reverse red and blue

wires connected to

transformer.

• Turn power OFF

prior to repair.

• Normal operation.

• LED is steady on STEADY

• Check burners for proper

alignment.

• Check flue and air inlet

piping for blockage,

proper length, elbows,

and termination. Correct

as necessary.

• Check rollout limit. Replace

if necessary.

• Check induced draft

blower for proper

performance. Replace, if

necessary.

• Tighten or correct wiring

connection.

• Repair short in 24 volt AC

control/safety circuit(s).

• Replace integrated control

module fuse (3A).

• Flame rollout.

• Misaligned burners,

blocked flue and/or air

inlet pipe, or failed

induced draft blower.

• Loose or improperly

connected wiring.

• Short in 24 volt AC

control circuits or safety

circuits.

•Faulty rollout limit.

• Induced draft blower and

circulator blower runs

continuously. No furnace

operation.

• Integrated control module

diagnostic LED is flashing

FIVE (5) flashes.

5

5 FLASHES

• Flame sensed

with no call for

heat.

• Short to ground in flame

sense circuit. • Correct short at flame

sensor or in flame

sensor wiring.

• Turn power OFF

prior to repair.

• Insufficient conditioned air

over the heat exchanger.

Blocked filters, restrictive

ductwork, improper

circulator blower speed, or

failed circulator blower.

• Faulty primary limit switch.

• Loose or improperly

connected wiring.

• Check primary limit.

Replace if necessary.

• Check filters and

ductwork for blockage.

Clean filters or remove

obstruction.

• Check circulator blower

speed and performance.

Correct speed or replace

blower if necessary.

• Tighten or correct wiring

connection.

• Turn power OFF

prior to repair.

• Replace primary

switch with proper

replacement part.

• Replace blower

with correct

replacement part.

• Furnace not operating.

• Integrated control module

diagnostic LED is

flashing EIGHT (8)

flashes. 8 FLASHES

• Problem with

igniter circuit.

• Improperly connected

igniter.

• Bad igniter.

• Poor unit ground.

• Poor burner ground.

• Faulty integrated control

module.

• Check and correct wiring

from integrated control

module to igniter.

•Replace bad igniter.

•Check and correct unit

ground wiring.

• Replace bad integrated

control module.

• Turn power OFF

prior to repair.

• Replace igniter

with proper

replacement part.

• Read precautions

in “Electrostatic

Discharge”

section of manual.

ON

Cautions

& Notes

Corrective Action

Possible Causes

Fault

Description(s)

Symptoms of

Abnormal Operation

Associated

LED Code2

44

*MH95

BLOWER PERFORMANCE DATA

1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the furnace requires two return filters, this chart assumes

both filters are installed.

2. All furnaces ship as high speed cooling and medium-speed heating. Installer must adjust blower cooling & heating speed as needed.

3. For most jobs, about 400 CFM per ton when cooling is desirable.

4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates ranges

in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown for air conditioning purposes only.

6. At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.

Tons AC

at 0.5" 0.6 0.7 0.8

ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

HIGH 3.0

1352 29 1318 30 1260 31 1202 33 1128 35 1044 955 853

*MH950453BX* MED 2.5

1214 32 1172 34 1123 35 1064 37 1012 39 938 859 741

(MED-HI) MED-LO 2.0

997 40 994 40 960 41 923 43 884 45 817 741 611

LOW 1.5

757 52 753 52 734 54 704 56 674 59 620 524 438

HIGH 3.0

1449 41 1409 42 1326 45 1273 47 1201 49 1194 1136 1018

*MH950703BX* MED 2.5

1192 50 1172 51 1141 52 1094 54 1046 57 973 904 793

(MED-HI) MED-LO 2.0

981 61 962 62 943 63 917 65 888 67 830 764 665

LOW 1.5

750 79 730 81 714 83 692 86 657 90 620 570 502

HIGH 4.0

2069 29 1965 30 1871 32 1756 34 1661 36 1549 1415 1275

*MH950704CX* MED 3.5

1752 34 1724 34 1667 36 1603 37 1488 40 1402 1290 1082

(MED-HI) MED-LO 3.0

1437 41 1437 41 1417 42 1369 43 1320 45 1256 1140 984

LOW 2.5

1184 50 1177 50 1161 51 1132 52 1095 54 1047 928 837

HIGH 4.0

1970 40 1874 42 1757 45 1667 48 1566 51 1431 1334 1182

*MH950904CX* MED 3.5

1713 46 1650 48 1572 50 1510 52 1418 56 1313 1211 1079

(MED-HI) MED-LO 3.0

1439 55 1412 56 1370 58 1327 60 1260 63 1166 1078 956

LOW 2.5

1183 67 1155 69 1122 74 1108 72 1062 75 1011 931 816

HIGH 5.0

2058 39 1997 40 1928 42 1852 43 1777 45 1682 1600 1487

*MH950905CX* MED 4.0

1718 47 1685 48 1632 49 1586 51 1520 53 1458 1369 1281

(MED-HI) MED-LO 3.5

1502 54 1464 55 1429 56 1380 58 1319 61 1272 1200 1137

LOW 3.0

1305 62 1277 63 1253 64 1212 66 1175 69 1127 1081 1010

HIGH 5.0

2147 37 2114 37 2057 39 2030 39 1978 40 1889 1784 1713

*MH950905DX* MED 4.0

1675 47 1686 47 1640 48 1623 49 1557 51 1501 1455 1360

(MED-HI) MED-LO 3.5

1489 53 1470 54 1436 55 1409 56 1361 58 1318 1243 1130

LOW 3.0

1307 61 1265 63 1234 64 1203 66 1168 68 1096 1053 991

HIGH 5.0

2134 46 2103 47 2029 48 1941 51 1906 51 1818 1733 1625

*MH951155DX* MED 4.0

1678 58 1643 60 1643 60 1577 62 1527 64 1489 1423 1339

(MED-HI) MED-LO 3.5

1453 68 1440 68 1426 69 1363 72 1349 73 1314 1253 1205

LOW 3.0

1259 78 1239 79 1220 80 1181 83 1159 85 1118 1082 1015

BLOWER PERFORMANCE

(CFM & Temperature Rise vs. External Static Pressure)

Model

Heating Speed

As Shipped

Motor

Speed

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.1 0.2 0.3 0.4 0.5

45

BLOWER PERFORMANCE DATA ACSH96

1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the furnace requires two return filters, this chart assumes

both filters are installed.

2. All furnaces ship as high speed cooling and medium-speed heating. Installer must adjust blower cooling & heating speed as needed.

3. For most jobs, about 400 CFM per ton when cooling is desirable.

4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates ranges

in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown fo air conditioning purposes only.

6. At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.

Tons AC

at 0.5" 0.6 0.7 0.8

ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

HIGH 3.0 1415 28 1352 30 1290 31 1196 34 1127 36 1035 936 825

ACSH960453BX* MED 2.5 1221 33 1178 34 1127 36 1073 38 1007 40 932 834 733

(MED-HI) MED-LO 2.0 1034 39 1000 40 976 41 935 43 881 46 818 733 662

LOW 1.5 8604784548812507835174054682619534

HIGH 3.0 1431 42 1368 44 1296 47 1228 49 1150 53 1055 962 860

ACSH960703BX* MED 2.5 1212 50 1182 51 1138 53 1091 55 1019 59 944 871 769

(MED-HI) MED-LO 2.0 1002 60 978 62 956 63 921 66 878 69 825 738 647

LOW 1.5 8137480575790767598072683689644605

HIGH 4.0 1755 34 1674 36 1632 37 1510 40 1423 42 1325 1241 1116

ACSH960704CX* MED 3.5 1656 36 1585 38 1536 39 1429 42 1355 45 1268 1145 1059

(MED-HI) MED-LO 3.0 1551 39 1488 41 1427 42 1353 45 1290 47 1195 1100 1017

LOW 2.5 1286 47 1258 48 1241 49 1185 51 1112 54 1067 983 886

HIGH 4.0 1734 46 1652 49 1578 51 1508 53 1413 57 1336 1248 1154

ACSH960904CX* MED 3.5 1642 49 1558 52 1487 54 1418 57 1336 60 1243 1164 1039

(MED-HI) MED-LO 3.0 1522 53 1458 55 1396 58 1321 61 1253 64 1182 1101 986

LOW 2.5 1287 63 1244 65 1184 68 1148 70 1098 73 1034 953 849

HIGH 5.0 2189 37 2109 38 2025 40 1948 41 1862 43 1757 1644 1537

ACSH960905DX* MED 4.0 1885 43 1831 44 1776 45 1711 47 1637 49 1539 1453 1346

(MED-HI) MED-LO 3.5 1665 48 1627 50 1584 51 1524 53 1462 55 1400 1323 1220

LOW 3.0 1474 55 1440 56 1401 57 1356 59 1310 61 1255 1193 1109

HIGH 5.0 2134 46 2103 47 2029 48 1941 51 1906 51 1818 1733 1625

ACSH961155DX* MED 4.0 1678 58 1643 60 1643 60 1577 62 1527 64 1489 1423 1339

(MED-HI) MED-LO 3.5 1453 68 1440 68 1426 69 1363 72 1349 73 1314 1253 1205

LOW 3.0 1259 78 1239 79 1220 80 1181 83 1159 85 1118 1082 1015

BLOWER PERFORMANC

E

(CFM & Temperature Rise vs. External Static Pressure)

Model

Heating Speed

As Shipped

Motor

Speed

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.10.20.30.40.5

46

1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the furnace requires two return filters, this chart assumes

both filters are installed.

2. All furnaces ship as high speed cooling and medium-speed heating. Installer must adjust blower cooling & heating speed as needed.

3. For most jobs, about 400 CFM per ton when cooling is desirable.

4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates ranges

in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown fo air conditioning purposes only.

6. At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.

AMEH96

BLOWER PERFORMANCE DATA

0.6 0.7 0.8

CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

T1 - YELLOW 1.5 726 48 670 53 617 57 553 64 490 72 429 378 336

T2 - RED 2.0 905 39 860 41 812 43 761 46 712 49 663 610 574

T3 - ORANGE 2.5 1121 31 1074 33 1039 34 998 35 959 37 923 882 839

T4 - BLUE 3.0 1274 28 1239 28 1199 29 1166 30 1129 31 1096 1059 1021

T5 - BLACK 3.0 1306 27 1261 28 1232 29 1195 29 1162 30 1132 1090 1057

T1 - YELLOW 1.5 714 80 667 79 604 87 548 96 484 109 422 367 325

T2 - RED 2.0 904 58 851 62 804 66 761 69 708 75 664 612 572

T3 - ORANGE 2.5 1125 47 1075 49 1045 51 999 53 956 55 921 877 839

T4 - BLUE 3.0 1312 40 1271 42 1228 43 1202 44 1165 45 1127 1087 1044

T5 - BLACK 3.5 1423 37 1386 38 1354 39 1321 40 1278 41 1210 1134 1032

T1 - YELLOW 3.0 1297 54 1253 56 1209 58 1161 61 1111 63 1067 1022 974

T2 - RED 3.5 1507 47 1455 48 1422 49 1377 51 1334 53 1296 1251 1195

T3 - ORANGE 4.0 1677 42 1637 43 1602 44 1562 45 1526 46 1484 1441 1324

T4 - BLUE 4.0 1879 37 1842 38 1800 39 1762 40 1700 41 1566 1437 1319

T5 - BLACK 5.0 2044 35 1967 36 1894 37 1795 39 1702 41 1578 1452 1320

T1 - YELLOW 3.0 1331 66 1275 69 1206 73 1145 77 1080 81 1021 953 889

T2 - RED 3.5 1512 58 1452 60 1392 63 1336 66 1279 69 1219 1175 1115

T3 - ORANGE 4.0 1713 51 1666 53 1614 57 1569 56 1513 58 1468 1414 1364

T4 - BLUE 4.0 1892 46 1845 48 1802 49 1752 50 1707 52 1656 1614 1577

T5 - BLACK 5.0 2080 42 2038 43 2005 44 1960 45 1920 46 1879 1843 1791

A

MEH960603BX*

(MED-HI)

A

MEH960805CX*

(MED-HI)

(CFM & TEMPERATURE RISE VS. EXTERNAL STATIC PRESSURE)

0.4 0.5

A

MEH960403BX*

(MED-HI)

A

MEH961005DX*

(MED-HI)

EXTERNAL STATIC PRESSURE (Inches Water Column)

Model

--------------

Heating Speed

As Shipped

0.3

Mot or

Speed

Tons

A

C at

0.5"

ESP

0.1 0.2

47

1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the furnace requires two return filters, this chart assumes

both filters are installed.

2. All furnaces ship as high speed cooling and medium-speed heating. Installer must adjust blower cooling & heating speed as needed.

3. For most jobs, about 400 CFM per ton when cooling is desirable.

4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates ranges

in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown fo air conditioning purposes only.

6. At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.

GCH95 / GCH9115

BLOWER PERFORMANCE DATA

Tons AC

at 0.5" 0.6 0.7 0.8

ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

HIGH 3.0 1415 28 1352 30 1290 31 1196 34 1127 36 1035 936 825

GCH950453BX* MED 2.5 1221 33 1178 34 1127 36 1073 38 1007 40 932 834 733

(MED-HI) MED-LO 2.0 1034 39 1000 40 976 41 935 43 881 46 818 733 662

LOW 1.5 860 47 845 48 812 50 783 51 740 54 682 619 534

HIGH 3.0 1431 42 1368 44 1296 47 1228 49 1150 53 1055 962 860

GCH950703BX* MED 2.5 1212 50 1182 51 1138 53 1091 55 1019 59 944 871 769

(MED-HI) MED-LO 2.0 1002 60 978 62 956 63 921 66 878 69 825 738 647

LOW 1.5 813 74 805 75 790 76 759 80 726 83 689 644 605

HIGH 4.0 1755 34 1674 36 1632 37 1510 40 1423 42 1325 1241 1116

GCH950704CX* MED 3.5 1656 36 1585 38 1536 39 1429 42 1355 45 1268 1145 1059

(MED-HI) MED-LO 3.0 1551 39 1488 41 1427 42 1353 45 1290 47 1195 1100 1017

LOW 2.5 1286 47 1258 48 1241 49 1185 51 1112 54 1067 983 886

HIGH 4.0 1734 46 1652 49 1578 51 1508 53 1413 57 1336 1248 1154

GCH960904CX* MED 3.5 1642 49 1558 52 1487 54 1418 57 1336 60 1243 1164 1039

(MED-HI) MED-LO 3.0 1522 53 1458 55 1396 58 1321 61 1253 64 1182 1101 986

LOW 2.5 1287 63 1244 65 1184 68 1148 70 1098 73 1034 953 849

HIGH 5.0 2189 37 2109 38 2025 40 1948 41 1862 43 1757 1644 1537

GCH950905DX* MED 4.0 1885 43 1831 44 1776 45 1711 47 1637 49 1539 1453 1346

(MED-HI) MED-LO 3.5 1665 48 1627 50 1584 51 1524 53 1462 55 1400 1323 1220

LOW 3.0 1474 55 1440 56 1401 57 1356 59 1310 61 1255 1193 1109

HIGH 5.0 2134 46 2103 47 2029 48 1941 51 1906 51 1818 1733 1625

GCH91155DX* MED 4.0 1678 58 1643 60 1643 60 1577 62 1527 64 1489 1423 1339

(MED-HI) MED-LO 3.5 1453 68 1440 68 1426 69 1363 72 1349 73 1314 1253 1205

LOW 3.0 1259 78 1239 79 1220 80 1181 83 1159 85 1118 1082 1015

BLOWER PERFORMANCE

(CFM & Temperature Rise vs. External Static Pressure)

Model

Heating Speed

As Shipped

Motor

Speed

EXTERNAL STATIC PRESSU RE (Inches Water Col umn)

0.10.20.30.40.5

48

1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the furnace requires two return filters, this chart assumes

both filters are installed.

2. All furnaces ship as high speed cooling and medium-speed heating. Installer must adjust blower cooling & heating speed as needed.

3. For most jobs, about 400 CFM per ton when cooling is desirable.

4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates ranges

in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown fo air conditioning purposes only.

6. At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.

GME95

BLOWER PERFORMANCE DATA

0.6 0.7 0.8

CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

T1 - YELLOW 1.5 726 48 670 53 617 57 553 64 490 72 429 378 336

T2 - RED 2.0 905 39 860 41 812 43 761 46 712 49 663 610 574

T3 - ORANGE 2.5 1121 31 1074 33 1039 34 998 35 959 37 923 882 839

T4 - BLUE 3.0 1274 28 1239 28 1199 29 1166 30 1129 31 1096 1059 1021

T5 - BLACK 3.0 1306 27 1261 28 1232 29 1195 29 1162 30 1132 1090 1057

T1 - YELLOW 1.5 714 80 667 79 604 87 548 96 484 109 422 367 325

T2 - RED 2.0 904 58 851 62 804 66 761 69 708 75 664 612 572

T3 - ORANGE 2.5 1125 47 1075 49 1045 51 999 53 956 55 921 877 839

T4 - BLUE 3.0 1312 40 1271 42 1228 43 1202 44 1165 45 1127 1087 1044

T5 - BLACK 3.5 1423 37 1386 38 1354 39 1321 40 1278 41 1210 1134 1032

T1 - YELLOW 3.0 1297 54 1253 56 1209 58 1161 61 1111 63 1067 1022 974

T2 - RED 3.5 1507 47 1455 48 1422 49 1377 51 1334 53 1296 1251 1195

T3 - ORANGE 4.0 1677 42 1637 43 1602 44 1562 45 1526 46 1484 1441 1324

T4 - BLUE 4.0 1879 37 1842 38 1800 39 1762 40 1700 41 1566 1437 1319

T5 - BLACK 5.0 2044 35 1967 36 1894 37 1795 39 1702 41 1578 1452 1320

T1 - YELLOW 3.0 1331 66 1275 69 1206 73 1145 77 1080 81 1021 953 889

T2 - RED 3.5 1512 58 1452 60 1392 63 1336 66 1279 69 1219 1175 1115

T3 - ORANGE 4.0 1713 51 1666 53 1614 57 1569 56 1513 58 1468 1414 1364

T4 - BLUE 4.0 1892 46 1845 48 1802 49 1752 50 1707 52 1656 1614 1577

T5 - BLACK 5.0 2080 42 2038 43 2005 44 1960 45 1920 46 1879 1843 1791

0.3

Motor

Speed

Tons

AC at

0.5"

ESP

0.1 0.2

GME950603BX*

(MED-HI)

GME950805CX*

(MED-HI)

(CFM & TEMPERATURE RISE VS. EXTERNAL STATIC PRESSURE)

0.4 0.5

GME950403BX*

(MED-HI)

GME951005DX*

(MED-HI)

EXTERNAL STATIC PRESSURE (Inches Water Column)

Model

--------------

Heating Speed

As Shipped

49

*MH95[0453,0704,0905D]

*MH95[0703,0904,1155]

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

WIRING DIAGRAM

HIGH VOLTAGE!

D

ISCONNECT

ALL

POWER

BEFORE

SERVICING

OR

INSTALLING

THIS

UNIT

.

M

ULTIPLE

POWER

SOURCES

MAY

BE

PRESENT

. F

AILURE

TO

DO

SO

MAY

CAUSE

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

.

R

YL YELLOW

OR ORANGE

PU PURPLE

GN GREEN

BK BLACK

BR BROWN

WH WHITE

BL BLUE

GY GRAY

RD RED

COLOR CODES:

LOW VOLTAGE (24V)

LOW VOLTAGE FIELD

HI VOLTAGE (115V)

HI VOLTAGE FIELD

NOTES:

1. SE T HEAT ANTICIPATOR ON ROOM THERM OSTAT AT 0.7 AM PS.

2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.

0140F00663 REV. A

OR (MED LOW)

BL (MED)

RD (LOW)

GAS VALVE (HONEY WELL)

C

PM

CG W

INTERNAL TO

INTEGRATED CONTROL

JUNCTION

EQUIPMENT GND

FIELD GND

DIAGNOSTIC

LED

2 CIRCUIT

CONNECTOR

HOT

SURFACE

IGNITER

OVERCURRENT

PROT. DEVICE

IGNITER

TH (3)

INTEGRATED

CONTROL MODULE

JUNCTION BOX

LINE-H

INTEGRATED CONTROL MODULE

GND

DISCONNECT

LN

DISCONNECT POWER

BEFORE SERVICING.

WIRING TO UNIT

MUST BE

PROPERLY

POLARIZED

AND GROUNDED.

OVERCURRENT PROTECTION DEVICE

BR

GY

RD

BL

BK

4. IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME, DISCARD JUMPER BEFORE CONNECTING BLOWER LEADS. UNUSED

BLOWER LEADS MUST BE PLACED ON "PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.

3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL

HAVING A TEMPERATURE RATING OF AT LEAST 105

TERMINAL

SWITCH (PRESS.)

5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.

PK PINK

115 VAC HOT AND PARK TERMINALS

LINE-H

FLAME

SENSOR

FRONT COVER

PRESSURE SWITCH

( SINGLE CONTROL ON 45K BTU )

N

O

C

GY

BK

PLUG CONNECTION

FIELD SPLICE

SWITCH (TEMP.)

OR

24V THERMOSTAT

CONNECTIONS

GR

GND

115 VAC

24 VAC

BLOWER

COMPARTMENT

DOOR SWITCH

(OPEN WHEN

DOOR OPEN)

DOOR

SWITCH

WARNING:DISCONNECT POWER BEFORE

SERVICING.WIRING TO UNIT MUST BE

PROPERLY POLARIZED AND GROUNDED.

BK

GND

DISCONNECT

L

POWER SUPPLY WITH

OVERCURRENT PROTECTION

DEVICE

WH

JUNCTION

BOX

OR

ID BLOWER

PRESSURE

SWITCH

HEAT-H

GND

WH

RD

WH

GND

BURNER COMPARTMENT

BLOWER COMPARTMENT

NOTE 4

SEE

N

O

COOL-H

BK (HI)

BR BR

CAPACITOR

YL

WH

YL

CONTROL

PRIMARY LIMIT

AUTO RESET

BL

PU

MANUAL RESET ROLLOUT LIMIT CONTROL(S)

RD

OR

PK

BK

WH WH

BLOWER

INDUCED DRAFT

MANUAL RESET

AUXILIARY LIMITS

(1) IN UPFLOW

BLOWER DECK

(2) IN C'FLOW

BLOWER HOUSING

C

CIRCULATOR

BLOWER

FS

LIMIT CONTROLS

MANUAL RESET AUXILIARY

HI

HEAT-H

LO

HEAT-H

IGNITER

HOT SURFACE

IND

IGN

EAC-H AIR CLEANER

ELECTRONIC

BLWR

CIRCULATOR

BLWR

ID

FLAME SENSOR

115 VAC

TRANSFORMER

40 VA

24 VAC

GND

CONTROL

LIMIT

PRIMARY

AUTO RESET

(SINGLE CONTROL ON 45K BTU)

LIMIT CONTROL(S)

MANUAL RESET ROLLOUT

RO1 (5)

RO2 (11)

HLO (1)

HLI (7)

MVC (9)

GND (8)

BL

YL OR

RD

GR BR

PK

GY

BK

MICRO

TO

C

G

Y

W

R

TRANSFORMER

40 VA

2

WH

OR

BL

YL

OR

OR GY

PK

RD

OR

GY

XFMR-H

TERMINALS

GY

OR

GR

BR

1

2

3

12 11 10

98

7

65

WARNING:

C. USE COPPER CONDUCTORS ONLY.

24 VAC

HUMIDIFIER

24 VAC

HUMIDIFIER

HUMIDIFIER

PSO (4)

MVL(2)

PS (10)

C

NO

CNO

FRONT COVER

PRESSURE SWITCH

ID BLOWER

PRESSURE

SWITCH

0

C

7

6

5

4

3

2

1

OFF = CONTROL FAILURE

STEADY ON = NORMAL OPERATION

1 FLASH =

2 FLASHES = PRESSURE SWITCH STUCK CLOSED

3 FLASHES = PRESSURE SWITCH STUCK OPEN

4 FLASHES = OPEN HIGH LIMIT

5 FLASHES = FLAME SENSE WITHOUT GAS VALVE

OPEN ROLLOUT OR OPEN FUSE

7 FLASHES = LOW FLAME SIGNAL

6 FLASHES =

SYSTEM LOCKOUT (RETRIES EXCEEDED)

CONTINUOUS/RAPID FLASHES = REVERSED 115 VAC POLARITY

CONTROL

MODULE

INTEGRATED

FUSE

ON OFF

2ND

STAGE

DELAY

MODE

HEAT

OFF

DELAY

FS

1

3

2

HI

PM

GAS

VALVE

C

HI

MVH (12)

FACTORY SETTINGS

SHOWN

*

*

*

*

SEE

NOTE 6

COOL-H

TO 115VAC/ 1 Ø /60 HZ POWER SUPPLY WITH

PU

Y

6. TO RECALL THE LAST 5 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN

STANDBY (NO THERMOSTAT INPUTS)

8

GY

BK

WH

BK

TR

(

6

)

XFMR-H

4

N

TO 115 V

A

C / 1Ø / 60HZ

1

PK

WH

WH WH

OR

8 FLASHES = CHECK IGNITER OR IMPROPER GROUNDING

50

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

HIGH VOLTAGE!

D

ISCONNECT

ALL

POWER

BEFORE

SERVICING

OR

INSTALLING

THIS

UNIT

.

M

ULTIPLE

POWER

SOURCES

MAY

BE

PRESENT

. F

AILURE

TO

DO

SO

MAY

CAUSE

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

.

WIRING DIAGRAM ACSH96 / GCH95 / GCH9

*MH950905CX

51

GME95 / AMEH96

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

HIGH VOLTAGE!

D

ISCONNECT

ALL

POWER

BEFORE

SERVICING

OR

INSTALLING

THIS

UNIT

.

M

ULTIPLE

POWER

SOURCES

MAY

BE

PRESENT

. F

AILURE

TO

DO

SO

MAY

CAUSE

PROPERTY

DAMAGE

,

PERSONAL

INJURY

OR

DEATH

.

WIRING DIAGRAM

52

VENT/FLUE

TEE

COMBUSTION

AIR INTAKE.

DISTANCE BETWEEN

COMBUSTION AIR

INTAKE AND GRADE

DISTANCE BETWEEN

VENT AND GRADE

For all side wall horizontally vented gas fueled equipment installed

in every dwelling, building or structure used in whole or in part for

residential purposes, including those owned or operated by the

Commonwealth and where the side wall exhaust vent termination

is less than seven (7) feet above finished grade in the area of the

venting, including but not limited to decks and porches, the follow-

ing requirements shall be satisfied:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At

the time of installation of the side wall horizontal vented gas

fueled equipment, the installing plumber or gasfitter shall

observe that a hard wired carbon monoxide detector with

an alarm and battery back-up is installed on the floor level

where the gas equipment is to be installed. In addition, the

installing plumber or gasfitter shall observe that a battery

operated or hard wired carbon monoxide detector with an

alarm is installed on each additional level of the dwelling,

building or structure served by the side wall horizontal vented

gas fueled equipment. It shall be the responsibility of the

property owner to secure the services of qualified licensed

professionals for the installation of hard wired carbon

monoxide detectors

a. In the event that the side wall horizontally vented gas fueled

equipment is installed in a crawl space or an attic, the

hard wired carbon monoxide detector with alarm and

battery back-up may be installed on the next adjacent

floor level.

b. In the event that the requirements of this subdivision can

not be met at the time of completion of installation, the

owner shall have a period of thirty (30) days to comply

with the above requirements; provided, however, that

during said thirty (30) day period, a battery operated carbon

monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each

carbon monoxide detector as required in accordance with

the above provisions shall comply with NFPA 720 and be

ANSI/UL 2034 listed and IAS certified.

3. SIGNAGE. A metal or plastic identification plate shall be

permanently mounted to the exterior of the building at a

minimum height of eight (8) feet above grade directly in line

with the exhaust vent terminal for the horizontally vented

gas fueled heating appliance or equipment. The sign shall

read, in print size no less than one-half (1/2) inch in size,

“GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL

OBSTRUCTIONS”.

4. INSPECTION. The state or local gas inspector of the side

wall horizontally vented gas fueled equipment shall not

approve the installation unless, upon inspection, the

inspector observes carbon monoxide detectors and signage

installed in accordance with the provisions of 248 CMR

5.08(2)(a)1 through 4.

EXEMPTIONS

The following equipment is exempt from 248 CMR 5.08(2)(a)1

through 4:

1. The equipment listed in Chapter 10 entitled “Equipment

Not Required To Be Vented” in the most current edition of

NFPA 54 as adopted by the Board; and

2. Product Approved side wall horizontally vented gas fueled

equipment installed in a room or structure separate from

the dwelling, building or structure used in whole or in part

for residential purposes.

(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT

VENTING SYSTEM PROVIDED. When the manufacturer

of Product Approved side wall horizontally vented gas

equipment provides a venting system design or venting

system components with the equipment, the instructions

provided by the manufacturer for installation of the

equipment and the venting system shall include:

1. Detailed instructions for the installation of the venting system

design or the venting system components; and

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

system.

(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT

VENTING SYSTEM NOT PROVIDED. When the

manufacturer of a Product Approved side wall horizontally

vented gas fueled equipment does not provide the parts

for venting the flue gases, but identifies “special venting

systems”, the following requirements shall be satisfied

by the manufacturer:

1. The referenced “special venting system” instructions shall

be included with the appliance or equipment installation

instructions; and

2. The “special venting systems” shall be Product Approved

by the Board, and the instructions for that system shall

include a parts list and detailed installation instructions.

(e) A copy of all installation instructions for all Product

Approved side wall horizontally vented gas fueled

equipment, all venting instructions, all parts lists for

venting instructions, and/or all venting design instructions

shall remain with the appliance or equipment at the

completion of the installation.

SPECIAL INSTRUCTIONS FOR PRODUCTS INSTALLED

IN THE STATE OF MASSACHUSETTS

53

THIS PAGE LEFT INTENTIONALLY BLANK

54

THIS PAGE LEFT INTENTIONALLY BLANK

55

THIS PAGE LEFT INTENTIONALLY BLANK

56

Quality Makes the Difference!

“All of our systems are designed and manufactured with the same high quality standards regard-

less of size or efficiency. We have designed these units to significantly reduce the most frequent

causes of product failure. They are simple to service and forgiving to operate. We use quality

materials and components. Finally, every unit is run tested before it leaves the factory. That’s why

we know. . . There’s No Better Quality.”

Visit our web sites at www.goodmanmfg.com or www.amana-hac.com for information on:

•Products

•Warranties

•Customer Services

•Parts

•Contractor Programs and Training

•Financing Options

NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN

ARE SUBJECT TO CHANGE WITHOUT NOTICE.

© 2006-2013 Goodman Manufacturing Company, L.P.