I

NSTALLATION

I

NSTRUCTIONS FOR

*M(H,S)8 / *D(H,S)8 / *HS8 / GME8 G

AS

F

URNACE

(CATEGORY I )

Installer: Affix all manuals adjacent to the unit.

These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA-

2.3 Gas Fired Central Furnaces.

C

®

US

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.

IO-417A

11/2011

ATTENTION INSTALLING PERSONNEL

As a professional installer, you have an obligation to know the product better than the customer.

This includes all safety precautions and related items.

Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual.

Pay special attention to all safety warnings. Often during installation or repair, it is possible to place yourself in a position which is more hazardous than when the unit is in operation.

Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer in its safe use.

Safety is a matter of common sense...a matter of thinking before acting.

Most dealers have a list of specific, good safety practices...follow them.

The precautions listed in this Installation Manual are intended as supplemental to existing practices.

However, if there is a direct conflict between existing practices and the content of this manual,

the precautions listed here take precedence.

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

WARNING

G

OODMAN

 

WILL

 

NOT

 

BE

 

RESPONSIBLE

 

FOR

 

ANY

 

INJURY

 

OR

 

PROPERTY

 

DAMAGE

 

ARISING

 

FROM

 

IMPROPER

 

SERVICE

 

OR

 

SERVICE

 

PROCEDURES

. 

I

F

 

YOU

 

INSTALL

 

OR

 

PERFORM

 

SERVICE

 

ON

 

THIS

 

UNIT

, 

YOU

 

ASSUME

 

RESPONSIBILITY

 

FOR

 

ANY

 

PERSONAL

 

INJURY

 

OR

 

PROPERTY

 

DAMAGE

 

WHICH

 

MAY

 

RESULT

. M

ANY

 

JURISDICTIONS

 

REQUIRE

 

A

 

LICENSE

 

TO

 

INSTALL

 

OR

 

SERVICE

 

HEATING

 

AND

 

AIR

 

CONDITIONING

 

EQUIPMENT

.

5151 San Felipe Suite 500 • Houston, TX 77056 www.goodmanmfg.com • www.amana-hac.com

© 2011 Goodman Manufacturing Company, L.P.

Table of Contents

A

DDITIONAL

S

AFETY

C

ONSIDERATIONS

...................................................................................................... 6

S

HIPPING

I

NSPECTION

........................................................................................................................... 6

E

LECTROSTATIC

D

ISCHARGE

(ESD) P

RECAUTIONS

..................................................................................... 6

T

O

T

HE

I

NSTALLER

.............................................................................................................................. 6

I

MPORTANT

N

OTE TO THE

O

WNER REGARDING

P

RODUCT

W

ARRANTY

................................................................. 6

P

RODUCT

A

PPLICATION

............................................................................................................................... 7

L

OCATION

R

EQUIREMENTS AND

C

ONSIDERATIONS

................................................................................................ 8

C

LEARANCES AND

A

CCESSIBILITY

............................................................................................................ 9

I

NSTALLATION

P

OSITIONS

...................................................................................................................... 9

H

ORIZONTAL

I

NSTALLATION

.................................................................................................................... 9

F

URNACE

S

USPENSION

.......................................................................................................................... 9

E

XISTING

F

URNACE

R

EMOVAL

.............................................................................................................. 10

T

HERMOSTAT

L

OCATION

...................................................................................................................... 10

C

OMBUSTION AND

V

ENTILATION

A

IR

R

EQUIREMENTS

.......................................................................................... 10

C

ATEGORY

I V

ENTING

(V

ERTICAL

V

ENTING

) .....................................................................................................11

E

XTERIOR

M

ASONRY

C

HIMNEYS

(C

ATEGORY

I F

URNACES

O

NLY

) ......................................................................... 12

C

HECKLIST

S

UMMARY

........................................................................................................................ 12

C

HECK

1 - P

ROPER CHIMNEY TERMINATION

. ............................................................................................. 13

C

HECK

2 - A

NY SOLID OR LIQUID FUEL APPLIANCES VENTED INTO THIS CHIMNEY CHANNEL

...................................... 13

C

HECK

3 - C

HIMNEY

C

ROWN

C

ONDITION

. ................................................................................................ 14

C

HECK

4 - D

EBRIS IN

C

LEANOUT

.......................................................................................................... 14

C

HECK

5 - L

INER

C

ONDITION

. ............................................................................................................... 14

C

HECK

6 - D

ILUTION

A

IR

. ................................................................................................................... 14

C

HECK

7 - C

OMPLETE THE

I

NSTALLATION

. ............................................................................................... 15

F

IX

1 - L

INER

T

ERMINATION

................................................................................................................. 15

F

IX

2 -C

HANGE

V

ENTING

A

RRANGEMENTS

............................................................................................... 15

F

IX

3 - R

EBUILD THE

C

ROWN

............................................................................................................... 15

F

IX

4 - R

ELINING

.............................................................................................................................. 15

E

LECTRICAL

C

ONNECTIONS

........................................................................................................................ 16

W

IRING

H

ARNESS

.............................................................................................................................. 16

115 V

OLT

L

INE

C

ONNECTIONS

............................................................................................................. 16

F

OSSIL

F

UEL

A

PPLICATIONS

................................................................................................................ 16

J

UNCTION

B

OX

R

ELOCATION

................................................................................................................ 17

24 V

OLT

T

HERMOSTAT

W

IRING

............................................................................................................ 17

GME8 F

URNACE WITH

2-S

TAGE

C

ONDENSER

F

IELD

W

IRING

....................................................................... 17

S

ETTING THE

H

EAT

A

NTICIPATOR

........................................................................................................... 18

115 V

OLT

L

INE

C

ONNECTION OF

A

CCESSORIES

........................................................................................ 18

(E

LECTRONIC

A

IR

C

LEANER

) ................................................................................................................ 18

24 V

AC

H

UMIDIFIER

.......................................................................................................................... 19

G

AS

S

UPPLY AND

P

IPING

........................................................................................................................... 19

H

IGH

A

LTITUDE

D

ERATE

...................................................................................................................... 19

P

ROPANE

G

AS

C

ONVERSION

................................................................................................................ 19

G

AS

P

IPING

C

ONNECTIONS

.................................................................................................................. 20

U

PFLOW

I

NSTALLATIONS

..................................................................................................................... 20

C

OUNTERFLOW

I

NSTALLATIONS

.............................................................................................................. 21

G

AS

P

IPING

C

HECKS

......................................................................................................................... 21

P

ROPANE

G

AS

T

ANKS AND

P

IPING

......................................................................................................... 21

2

Table of Contents

C

IRCULATING

A

IR AND

F

ILTERS

.................................................................................................................... 22

D

UCTWORK

- A

IR

F

LOW

...................................................................................................................... 22

C

HECKING

D

UCT

S

TATIC

..................................................................................................................... 22

F

ILTERS

- R

EAD

T

HIS

S

ECTION

B

EFORE

I

NSTALLING

T

HE

R

ETURN

A

IR

D

UCTWORK

............................................ 23

U

PRIGHT

I

NSTALLATIONS

..................................................................................................................... 23

C

IRCULATION

A

IR

F

ILTERS

................................................................................................................... 23

H

ORIZONTAL

I

NSTALLATIONS

................................................................................................................ 23

S

EQUENCE OF

O

PERATION

(I

NTEGRATED

I

GNITION

C

ONTROL

) ................................................................................ 23

P

OWER

U

P

...................................................................................................................................... 23

H

EATING

M

ODE

................................................................................................................................. 24

(M

ODE

DIP

SWITCH IS SET TO

“1 STG”

POSITION

) .................................................................................. 24

(M

ODE

DIP S

WITCH IS SET TO

“2 STG”

POSITION

) ................................................................................. 24

C

OOLING

M

ODE

................................................................................................................................ 24

F

AN

O

NLY

M

ODE

.............................................................................................................................. 25

S

TART

-

UP

P

ROCEDURE

A

ND

A

DJUSTMENT

....................................................................................................... 25

F

URNACE OPERATION

.......................................................................................................................... 25

F

URNACE

S

TART

-

UP

........................................................................................................................... 25

F

URNACE

S

HUTDOWN

......................................................................................................................... 25

G

AS

S

UPPLY

P

RESSURE

M

EASUREMENT

.................................................................................................. 25

G

AS

M

ANIFOLD

P

RESSURE

M

EASUREMENT AND

A

DJUSTMENT

....................................................................... 28

G

AS

I

NPUT

R

ATE

M

EASUREMENT

(N

ATURAL

G

AS

O

NLY

) ............................................................................ 29

T

EMPERATURE

R

ISE

........................................................................................................................... 29

C

IRCULATOR

B

LOWER

S

PEED

A

DJUSTMENT

............................................................................................. 30

C

IRCULATOR

B

LOWER

F

AN

T

IMING

A

DJUSTMENT

...................................................................................... 30

S

ETTING

F

URNACE

O

PERATING

M

ODE

(*DH8, *ME8,

AND

*MH8

MODELS ONLY

) ............................................ 30

O

PERATIONAL

C

HECKS

.............................................................................................................................. 31

B

URNER

F

LAME

................................................................................................................................ 31

A

UXILIARY

L

IMIT

C

ONTROL

................................................................................................................. 31

S

AFETY

C

IRCUIT

D

ESCRIPTION

.................................................................................................................... 31

G

ENERAL

......................................................................................................................................... 31

I

NTEGRATED

C

ONTROL

M

ODULE

............................................................................................................. 31

P

RIMARY

L

IMIT

................................................................................................................................ 31

A

UXILIARY

L

IMIT

............................................................................................................................... 31

R

OLLOUT

L

IMITS

.............................................................................................................................. 32

P

RESSURE

S

WITCHES

......................................................................................................................... 32

F

LAME

S

ENSOR

................................................................................................................................ 32

T

ROUBLESHOOTING

................................................................................................................................... 32

E

LECTROSTATIC

D

ISCHARGE

(ESD) P

RECAUTIONS

................................................................................... 32

D

IAGNOSTIC

C

HART

........................................................................................................................... 32

F

AULT

R

ECALL

................................................................................................................................ 32

R

ESETTING

F

ROM

L

OCKOUT

................................................................................................................ 32

3

Table of Contents

M

AINTENANCE

......................................................................................................................................... 32

A

NNUAL INSPECTION

........................................................................................................................... 33

F

ILTERS

.......................................................................................................................................... 33

F

ILTER

M

AINTENANCE

......................................................................................................................... 33

F

ILTER

R

EMOVAL

.............................................................................................................................. 33

I

NDUCED

D

RAFT AND

C

IRCULATOR

B

LOWER

M

OTORS

................................................................................. 33

F

LAME

S

ENSOR

(Q

UALIFIED

S

ERVICER

O

NLY

) .......................................................................................... 33

I

GNITER

(Q

UALIFIED

S

ERVICER

O

NLY

) ..................................................................................................... 33

B

URNERS

......................................................................................................................................... 33

C

LEANING

(Q

UALIFIED

S

ERVICER

O

NLY

) ........................................................................................................ 34

B

EFORE

L

EAVING AN

I

NSTALLATION

............................................................................................................... 34

R

EPAIR AND

R

EPLACEMENT

P

ARTS

.............................................................................................................. 34

C

OMPONENT

I

DENTIFICATION

................................................................................................................. 35 - 36

APPENDIX ......................................................................................................................................... 37

T

ROUBLESHOOTING

C

HART

.................................................................................................................. 37

B

LOWER

P

ERFORMANCE

D

ATA

............................................................................................................. 40

*M(H/S)8 ................................................................................................................................. 40

*(D/H)S8 ................................................................................................................................. 41

GME8 ..................................................................................................................................... 42

*(M, D, H)S8 W

IRING

D

IAGRAM

.................................................................................................. 43

GME8 W

IRING

D

IAGRAM

............................................................................................................ 44

*(M,D)H* W

IRING

D

IAGRAM

......................................................................................................................45

4

S

AFETY

P

RECAUTIONS

Adhere to the following warnings and cautions when installing, adjusting, 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.

WARNING

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

.

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

 

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

.

WARNING

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

.

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.

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

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

 

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

.

5

S

AFETY

P

RECAUTIONS

WARNING

T

O

 

PREVENT

 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ASPHYXIATION

, 

THIS

 

FURNACE

 

MUST

 

BE

 C

ATEGORY

 I 

VENTED

. D

O

 

NOT

 

VENT

 

USING

 

C

ATEGORY

 III 

VENTING

.

P

ROVISIONS

 

MUST

 

BE

 

MADE

 

FOR

 

VENTING

 

COMBUSTION

 

PRODUCTS

 

OUTDOORS

 

THROUGH

 

A

 

PROPER

 

VENTING

 

SYSTEM

. T

HE

 

LENGTH

 

OF

 

FLUE

 

PIPE

 

COULD

 

BE

 

A

 

LIMITING

 

FACTOR

 

IN

 

LOCATING

 

THE

 

FURNACE

.

A

DDITIONAL

S

AFETY

C

ONSIDERATIONS

• This furnace is approved for Category I Venting only.

• Provisions must be made for venting combustion products outdoors through a proper venting system.

The length of flue pipe could be a limiting factor in locating the furnace.

S

HIPPING

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.

ing the integrated control module to electrostatic discharge.

This procedure is applicable to both installed and non-installed

(ungrounded) furnaces.

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

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

T

O

T

HE

I

NSTALLER

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

These furnaces are designed for Category I venting only.

WARNING

T

O

 

PREVENT

 

PROPERTY

 

DAMAGE

, 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

FIRE

, 

DO

 

NOT

 

INSTALL

 

THIS

 

FURNACE

 

IN

 

A

 

MOBILE

 

HOME

, 

TRAILER

, 

OR

 

RECREATIONAL

 

VEHICLE

.

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

Keep this literature in a safe place for future reference.

E

LECTROSTATIC

D

ISCHARGE

(ESD) P

RECAUTIONS

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 servicing to protect the integrated control module from damage. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid expos-

I

MPORTANT

N

OTE TO THE

O

WNER REGARDING

P

RODUCT

W

ARRANTY

Your warranty certificate is supplied as a separate document with the unit installed by your contractor. Read the limited warranty certificate carefully to determine what is and is not covered and keep the warranty certificate in a safe place. If you are unable to locate the warranty certificate please contact your installing contractor or contact customer service (877-254-4729) to obtain a copy.

IMPORTANT: To receive the Lifetime Heat Exchanger Limited

Warranty (good for as long as you own your home) and the 10year Parts Limited Warranty, online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec. Complete warranty details available from your local dealer or, for Goodman ® brand products, visit www.goodmanmfg.com, and for Amana ® brand products, visit www.amana-hac.com.

6

P

RODUCT

A

PPLICATION

To register your Goodman

®

brand unit, go to www.goodmanmfg.com and click “Warranty Registration”.

Complete the registration as prompted.

To register your Amana

®

brand unit, go to www.amana-hac.com

and click “Warranty Registration”. Complete the registration as prompted.

Product limited warranty certificates for models currently in production can be viewed at www.goodmanmfg.com or www.amanahac.com. If your model is not currently in production or does not appear on the website, please contact your installing contractor or contact customer service (877-254-4729) to obtain a copy of your warranty certificate.

Each product overview page contains a Product Warranty link; by clicking on it you will be able to view the limited warranty coverage for that specific product. To view warranty registration information, click on the Product Warranty text on the left navigation panel on the home page of each website. The Online

Product Registration pages are located in this same section.

P

RODUCT

A

PPLICATION

• 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 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.

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. Neither is it designed or certified for outdoor applications. The furnace must be installed indoors (i.e., attic space, crawl space, or garage area provided the garage area is enclosed with an operating door).

This furnace can be used in the following non-industrial commercial applications:

Schools, Office buildings, Churches, Retail stores,

Nursing homes, Hotels/motels, Common or office areas

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.

WARNING

T

O

 

PREVENT

 

PROPERTY

 

DAMAGE

, 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

FIRE

, 

DO

 

NOT

 

INSTALL

 

THIS

 

FURNACE

 

IN

 

A

 

MOBILE

 

HOME

, 

TRAILER

, 

OR

 

RECREATIONAL

 

VEHICLE

.

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

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

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

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

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

• All other warranty exclusions and restrictions apply.

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.

To ensure proper furnace operation, install, operate and maintain the furnace in accordance with these installation and operation instructions, all local building codes

and ordinances. In their absence, follow the latest edition of the National Fuel Gas Code (NFPA 54/ANSI Z223.1), and/or

CAN/CSA B149 Installation Codes, local plumbing or waste water codes, and other applicable codes.

A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1) can be obtained from any of the following:

American National Standards Institute

1430 Broadway

New York, NY 10018

National Fire Protection Association

1 Batterymarch Park

Quincy, MA 02269

CSA International

8501 East Pleasant Valley

Cleveland, OH 44131

7

L

OCATION

R

EQUIREMENTS AND

C

ONSIDERATIONS

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

CSA International

178 Rexdale Boulevard

Etobicoke, Ontario, Canada M9W 1R3

The rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated.

The total heat loss should be calculated by an approved method or in accordance with “ASHRAE Guide” or “Manual J-Load Calculations” published by the Air Conditioning Contractors of

America.

In the USA, this furnace MUST be installed in accordance with the latest edition of the ANSI Z223.1 booklet entitled “National

Fuel Gas Code” (NFPA 54), and the requirements or codes of the local utility or other authority having jurisdiction. In Canada, this furnace must be installed in accordance with the current

CAN/CGA-B149.1 & 2 Gas Installation Codes, local plumbing or waste water codes and other applicable codes. Additional helpful publications available from the NFPA are, NFPA 90A -

Installation of Air Conditioning and Ventilating System and NFPA

90B - Warm Air Heating and Air Conditioning System.

All venting shall be in accordance with PART 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1, or applicable local building and/or air conditioning codes. These publications are available from:

National Fire Protection Association, Inc.

1 Batterymarch Park, Quincy, MA 02269

NOTE: Furnaces with NOx screens meet the California NOx emission standards and California seasonal efficiency standards. ANNUAL inspections of the furnace and its vent system is strongly recommended.

L

OCATION

R

EQUIREMENTS AND

C

ONSIDERATIONS

Your unit model type determines which installation procedures must be used. For *MH8, *MS8, and GHS8 models, you must follow instructions for Horizontal Left, Horizontal Right or Upflow installations only. These furnaces are not approved for

Downflow installations.

Downflow models GD(H,S) ARE NOT APPROVED FOR HORI-

ZONTAL OR UPFLOW INSTALLATIONS. For these models, use only the instructions for downflow installation only.

WARNING

T

O

 

PREVENT

 

POSSIBLE

 

EQUIPMENT

 

DAMAGE

, 

PROPERTY

 

DAMAGE

, 

PERSONAL

 

INJURY

 

OR

 

DEATH

, 

THE

 

FOLLOWING

 

BULLET

 

POINTS

 

MUST

 

BE

 

OBSERVED

 

WHEN

 

INSTALLING

 

THIS

 

UNIT

.

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

Combustion and Ventilation Air Requirements.

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

8

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

• If the furnace is installed in an application where the typical operating sound level of a furnace is deemed objectionable, an optional sound reduction kit is available. Consult your local distributor for more details.

• Provisions must be made for venting combustion products outdoors through a proper venting system.

The length of flue pipe could be a limiting factor in locating the furnace.

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

V, Combustion and Ventilation Air Requirements.

• The furnace must be level. If the furnace is to be set on a floor that may become wet or damp at times, the furnace should be supported above the floor on a concrete base sized approximately 1-1/2" larger than the base of the furnace.

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

• 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

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

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

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

L

OCATION

R

EQUIREMENTS AND

C

ONSIDERATIONS

• Do not connect this furnace to a chimney flue that serves a separate appliance designed to burn solid fuel.

• For counterflow installations, the air conditioning coil must be downstream from the heat exchanger of the furnace.

• Counterflow installation over a noncombustible floor.

Before setting the furnace over the plenum opening, ensure the surface around the opening is smooth and level. A tight seal should be made between the furnace base and floor by using a silicon rubber caulking compound or cement grout.

• Counterflow installation over a combustible floor. If installation over a combustible floor becomes necessary, use an accessory subbase (see

Specification Sheet applicable to your model for details).

A special accessory subbase must be used for upright counterflow unit installations over any combustible material including wood. Follow the instructions with the subbase for proper installations. Do not install the furnace directly on carpeting, tile, or other combustible material other than wood flooring. (NOTE: The subbase will not be required if an air conditioning coil is installed between the supply air opening on the furnace and the floor.

Vent Pipe Clearance to Combustibles-

6" using Single Wall Connector or 1" using B-1 vent.

Top - 1"

Back - 0"

An upflow 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 vertically installed upflow furnaces, return air ductwork may be attached to the side panel(s) and/ or basepan. For horizontally installed upflow furnaces, return air ductwork must be attached to the basepan. For counterflow furnaces, return ductwork must be attached to the top end of the blower compartment.

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

H

VEN T

B1-VENT SING LE

1" 6"

ORIZONTAL

SIDES

I

NSTALLATION

1"

FRO N T

3"

BAC K

0"

Top clearance for horizontal configuration - 1"

I

NSTALLATION

P

OSITIONS

TO P

(PLENUM )

1"

Side

Clearance - 1"

Line contact to framing is permitted when installed in the horizontal configuration. Line contact is defined as the portion of the cabinet that is formed by the intersection of the top and side. ACCESSIBILITY CLEARANCE, WHERE GREATER,

SHOULD TAKE PRECEDENCE OVER MINIMUM FIRE PRO-

TECTION CLEARANCE. A gas-fired furnace for installation in a residential garage must be installed so that the ignition source and burners are located not less than eighteen inches (18") above the floor and is protected or located to prevent physical damage by vehicles. A gas furnace must not be installed directly on carpeting, tile, or other combustible materials other than wood flooring.

F

URNACE

S

USPENSION

If suspending the furnace from rafters or joist, use 3/8" threaded rod and 2”x2”x3/8” angle iron as shown below. The length of rod will depend on the application and the clearances necessary.

Front Clearance - 3"

• Adequate combustion/ventilation air must be supplied to the closet.

• Furnace must be completely sealed to floor or base.

Combustion/ ventilation air supply pipes must terminate

12" from top of closet and 12" from floor of closet. DO

NOT remove solid base plate for side return.

• Return air ducts must be completely sealed to the furnace and terminate outside the enclosure surfaces.

C

LEARANCES AND

A

CCESSIBILITY

Unobstructed front clearance of 24" for servicing is recommended.

9

Suspended Furnace

C

OMBUSTION

& V

ENTILATION

C

ATEGORY

I V

ENTING

A

IR

R

EQUIREMENTS

E

XISTING

F

URNACE

R

EMOVAL

NOTE: When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large to properly vent the remaining attached appliances.

The following vent testing procedure is reproduced from the

American National Standard/National Standard of Canada for Gas-Fired Central Furnaces ANSI Z21.47-Latest Edi-

tion, CSA-2.3-Latest Edition Section 1.23.1. The following steps shall be followed with each appliance connected to the venting system placed in operation, while any other appliances connected to the venting system are not in operation: 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 CAN/CSA B149 Installation

Codes and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition; c.

In so far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they shall operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers; d.

Follow the lighting instructions. Place the appliance being inspected in operation. Adjust thermostat so appliance shall operate continuously; e.

Test for draft hood equipped appliance spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle; f.

After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous conditions of use; g.

If improper venting is observed during any of the above tests, the common venting system must be corrected.

Corrections must be in accordance with the latest edition of the National Fuel Gas Code NFPA 54/ANSI Z223.1 and/or CAN/

CSA B149 Installation Codes.

If resizing is required on any portion of the venting system, use the appropriate table in Appendix G in the latest edition of the

National Fuel Gas Code ANSI Z223.1 and/or CAN/CSA B149

Installation Codes.

T

HERMOSTAT

L

OCATION

In an area having good air circulation, locate the thermostat about five feet high on a vibration-free inside wall. 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

Thermostat Influences

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

C

OMBUSTION AND

V

ENTILATION

A

IR

R

EQUIREMENTS

WARNING

T

O

 

AVOID

 

PROPERTY

 

DAMAGE

, 

PERSONAL

 

INJURY

 

OR

 

DEATH

, 

SUFFICIENT

 

FRESH

 

AIR

 

FOR

 

PROPER

 

COMBUSTION

 

AND

 

VENTILATION

 

OF

 

FLUE

 

GASES

 

MUST

 

BE

 

SUPPLIED

. M

OST

 

HOMES

 

REQUIRE

 

OUTSIDE

 

AIR

 

BE

 

SUPPLIED

 

INTO

 

THE

 

FURNACE

 

AREA

.

Improved construction and additional insulation in buildings have reduced heat loss by reducing air infiltration and escape around doors and windows. These changes have helped in reducing heating/cooling costs but have created a problem supplying combustion and ventilation air for gas fired and other fuel burning appliances. Appliances that pull air out of the house (clothes dryers, exhaust fans, fireplaces, etc.) increase the problem by starving appliances for air.

House depressurization can cause back drafting or improper combustion of gas-fired appliances, thereby exposing building occupants to gas combustion products that could include carbon monoxide.

If this furnace is to be installed in the same space with other gas appliances, such as a water heater, ensure there is an adequate supply of combustion and ventilation air for the other appliances. Refer to the latest edition of the National Fuel Gas

10

E

XTERIOR MASONRY

C

HIMNEYS

- C

ATEGORY

I F

URNACES

O

NLY

Code NFPA 54/ANSI Z223.1 or CAN/CSA B149 Installation

Codes or applicable provisions of the local building codes for determining the combustion air requirements for the appliances.

This furnace must use indoor air for combustion. It cannot be installed as a direct vent (i.e., sealed combustion) furnace.

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.

C

ATEGORY

I V

ENTING

(V

ERTICAL

V

ENTING

)

MODEL

40

60

80

100

120

140

WARNING

T

O

 

PREVENT

 

POSSIBLE

 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ASPHYXIATION

, 

THIS

 

FURNACE

 

MUST

 

BE

 C

ATEGORY

 I 

VENTED

. D

O

 

NOT

 

VENT

 

USING

 C

ATEGORY

 III 

VENTING

.

Category I Venting is venting at a non-positive pressure. A furnace vented as Category I is considered a fan-assisted appliance and the vent system does not have to be “gas tight.”

NOTE: Single stage gas furnaces with induced draft blowers draw products of combustion through a heat exchanger allowing, in some instances, common venting with natural draft appliances (i.e. water heaters). All installations must be vented in accordance with National Fuel Gas Code NFPA 54/ANSI Z223.1

- latest edition. In Canada, the furnaces must be vented in accordance with the National Standard of Canada, CAN/CSA

B149.1 and CAN/CSA B149.2 - latest editions and amendments.

NOTE: Masonry vent kit (MVK-01 and MVK-02) is to only be used on interior masonry chimneys or qualifying exterior masonry chimney applications identified in the MVK kit installation instructions. To ensure safe and reliable operation, use only the kit listed for your model.

NOTE: The vertical height of the Category I venting system must be at least as great as the horizontal length of the venting system.

WARNING

T

O

 

PREVENT

 

POSSIBLE

 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ASPHYXIATION

, 

COMMON

 

VENTING

 

WITH

 

OTHER

 

MANUFACTURER

’

S

 

INDUCED

 

DRAFT

 

APPLIANCES

 

IS

 

NOT

 

ALLOWED

.

The minimum vent diameter for the Category I venting system is as shown:

MINIMUM VENT

UPFLOW

4 Inch

4 Inch

4 Inch

5 Inch

5 Inch

5 Inch

COUNTERFLOW

4 Inch

4 Inch

4 Inch

5 Inch

N/A

N/A

Under some conditions, larger vents than those shown above may be required or allowed. When an existing furnace is re-

moved from a venting system serving other appliances, the

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

Upflow or Horizontal units are shipped with the induced draft blower discharging from the top of the furnace. (“Top” is as viewed for an upflow installation.) The induced draft blower can be rotated 90 degrees with the (0270F01119) chimney transition bottom kit for Category I venting. For horizontal installations, a four inch single wall pipe can be used to extend the induced draft blower outlet 1/2” beyond the furnace cabinet.

THIS PRODUCT IS NOT DESIGNED FOR COUNTERCLOCK-

WISE INDUCED DRAFT BLOWER ROTATION.

Vent the furnace in accordance with the National Fuel Gas

Code NFPA 54/ANSI Z223.1 - latest edition. In Canada, vent the furnace in accordance with the National Standard of Canada,

CAN/CSA B149.1 and CAN/CSA B149.2 - latest editions and amendments.

Venting - Furnace Installed in Horizontal Position

THIS FURNACE IS NOT DESIGN CERTIFIED TO BE HORI-

ZONTALLY VENTED THROUGH AN EXTERIOR SIDE WALL.

The following describes an optional venting procedure when the furnace is installed in the horizontal left discharge position.

To rotate the induced draft blower clockwise, you will need to purchase one (0270F01119) chimney transition bottom kit.

1. Disconnect electrical power from the furnace.

2. Disconnect the induced draft blower power leads, flue pipe, and pressure switch tubing.

3. Remove the round cutout from the right side of the wrapper.

4. Remove and save the four screws that fasten the induced draft blower to the flue collector box.

5. Remove and save the three screws that hold the chimney assembly to the induced draft blower.

6. Remove and save the four screws that fasten the chimney top to the chimney bottom.

7. Remove the chimney transition bottom from the transition bottom kit.

8. Install the chimney top with the four screws retained from step 6 onto the new chimney transition bottom from the transition bottom kit.

9. Remove the induced draft blower and install the new chimney assembly to it using the three screws retained from step 5.

10. Rotate the induced draft blower 90 degrees to the right, feed the flue pipe through the round cutout from the outside of the wrapper, and fit onto the chimney top assembly.

Secure the pipe to the chimney top from the front, top, and bottom using (3) screws and rotating the induced

11

E

XTERIOR MASONRY

C

HIMNEYS

- C

ATEGORY

I F

URNACES

O

NLY

draft blower to properly orient the assembly. NOTE: If the pipe section is less than 18”, then attach it directly to the chimney top on 3 sides and feed it through the round cutout from the inside of the wrapper.

11. Reattach the induced draft blower using the (4) screws retained from step 3. Ensure the gasket located between the induced draft blower and collector box is rotated accordingly.

12. Reconnect the induced draft blower power leads. NOTE:

If the wires are not long enough, pull extra wire from the wire bundle in the blower compartment.

13. Reconnect the remaining flue pipe, and the pressure switch tubing. Ensure that all wires and the pressure switch tubing is at least one inch from the flue pipe, or any other hot surface.

14. Restore power to furnace.

NOTE: In a horizontal installation the air conditioning coil must be adequately supported by proper brackets and supports. Inadequate coil support can result in furnace cabinet distortion and air leakage.

Counterflow units are shipped with the induced draft blower discharging from the top of the furnace. (“Top” as viewed for a counterflow installation.)

Vent the furnace in accordance with the National Fuel Gas

Code NFPA54/ANSI Z223.1-latest edition. In Canada, vent the furnace in accordance with the national standard of Canada,

CAN/CSA B149.1 and CAN/CSA B149.2- latest editions and amendments.

WARNING

P

OSSIBILITY

 

OF

 

PROPERTY

 

DAMAGE

, 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DAMAGING

 

CONDENSATION

 

CAN

 

OCCUR

 

INSIDE

 

MASONRY

 

CHIMNEYS

 

WHEN

 

A

 

SINGLE

 

FAN

‐

ASSISTED

 C

ATEGORY

 I 

APPLIANCE

 (80% AFUE 

FURNACE

) 

IS

 

VENTED

 

WITHOUT

 

ADEQUATE

 

DILUTION

 

AIR

. D

O

 

NOT

 

CONNECT

 

AN

 80% 

FURNACE

 

TO

 

A

 

MASONRY

 

CHIMNEY

 

UNLESS

 

THE

 

FURNACE

 

IS

 

COMMON

 

VENTED

 

WITH

 

A

 

DRAFT

 

HOOD

 

EQUIPPED

 

APPLIANCE

 

OR

 

THE

 

CHIMNEY

 

IS

 

LINED

 

WITH

 

A

 

METAL

 

LINER

 

OR

 T

YPE

 B 

METAL

 

VENT

. A

LL

 

INSTALLATIONS

 

USING

 

MASONRY

 

CHIMNEYS

 

MUST

 

BE

 

SIZED

 

IN

 

ACCORDANCE

 

WITH

 

THE

 

APPROPRIATE

 

VENTING

 

TABLES

. I

F

 

AN

 

80% 

FURNACE

 

IS

 

COMMON

 

VENTED

 

WITH

 

A

 

DRAFT

 

HOOD

 

EQUIPPED

 

APPLIANCE

, 

THE

 

POTENTIAL

 

FOR

 

CONDENSATION

 

DAMAGE

 

MAY

 

STILL

 

EXIST

 

WITH

 

EXTREMELY

 

COLD

 

CONDITIONS

, 

LONG

 

VENT

 

CONNECTORS

, 

EXTERIOR

 

CHIMNEYS

, 

OR

 

ANY

 

COMBINATION

 

OF

 

THESE

 

CONDITIONS

. 

T

HE

 

RISK

 

OF

 

CONDENSATION

 

DAMAGE

 

IS

 

BEST

 

AVOIDED

 

BY

 

USING

 

MASONRY

 

CHIMNEY

 

AS

 

A

 

PATHWAY

 

FOR

 

PROPERLY

 

SIZED

 

METAL

 

LINER

 

OR

 T

YPE

 B 

METAL

 

VENT

.

Wash

Clay Tile Size: 8" x 8" x12"

(Each x 24" Length)

Attic Floor

1/2" to 1" Air Space

Roof Line

Second Floor

E

WARNING

N

EVER

 

ALLOW

 

THE

 

PRODUCTS

 

OF

 

COMBUSTION

, 

INCLUDING

 

CARBON

 

MONOXIDE

, 

TO

 

ENTER

 

THE

 

RETURN

 

DUCTWORK

 

OR

 

CIRCULATION

 

AIR

 

SUPPLY

.

XTERIOR

M

ASONRY

C

HIMNEYS

(C

ATEGORY

I F

URNACES

O

NLY

An exterior masonry chimney is defined as a “Masonry” chimney exposed to the outdoors on one or more sides below the roof line.” The ability to use a clay lined masonry chimney depends on a parameter not associated with interior chimneys.

This variable is the geographic location of the installation. Researchers have discovered that the winter design temperatures have a direct impact on the suitability of this type of venting. In most situations, the existing masonry chimneys will require a properly sized metallic liner.

)

Throat

Damper

Clean Out

Breech

F.A.F. Vent

Connector

Fan Assisted

Forced Air

Furnace

First Floor

Water Heater

Vent Connector

Natural Draft

Water Heater

Basement Floor

Typical Multiple Flue Clay Tile Chimney

C

HECKLIST

S

UMMARY

This checklist serves as a summary of the items to be checked before venting an 80+ furnace into a masonry chimney. In addition, we recommend that a qualified serviceman use this checklist to perform a yearly inspection of the furnace venting system.

This checklist is only a summary. For detailed information on each of the procedures mentioned, see the paragraph referenced with each item.

This inspection is based upon a draft topical report, “Masonry

Chimney Inspection and Relining”, issued by the Gas Research

Institute. While not yet finalized, we believe this report represents the best information on this subject which is currently available.

12

Proper Chimney

Termination?

(Check 1)

E

XTERIOR MASONRY

C

HIMNEYS

- C

ATEGORY

I F

URNACES

O

NLY

If the chimney does not meet these termination requirements, but all other requirements in the checklist can be met, it may be possible for a mason to extend the chimney. If this will not be practical, see Fix 1.

10' or Less

2' Min.

2' Min.

Chimney channel free of solid and liquid fuel appliances?

(Check 2)

Change venting arrangements

(Fix 2)

3' Min.

Wall or

Parapet

Chimney

10' or Less

Crown in good condition

(Check 3)

Rebuild crown

(Fix 3) and/or Reline

(Fix 4)

2' Min.

3' Min.

Cleanout free of debris?

(Check 4)

Reline

(Fix 4)

Liner in good condition?

(Check 5)

Reline

(Fix 4)

Chimney

Termination 10 Feet Or Less From Ridge, Wall or Parapet

More than 10’

3’ Min.

Dilution air available?

(Check 6)

Reline

(Fix 4)

Wall or

Parapet

NOTE: No Height above parapet required when distance from walls or parapet is more than 10 feet.

Chimney

More than 10’

Height above any roof surface within

10 feet horizontally.

10’

Complete the installation.

(Check 7)

Ridge

2” Min.

3’ Min.

C

HECK

1 - P

ROPER CHIMNEY TERMINATION

.

A masonry chimney used as a vent for gas fired equipment must extend at least three feet above the highest point where it passes through the roof. It must extend at least two feet higher than any portion of a building within a horizontal distance of 10 feet. In addition, the chimney must terminate at least 3 feet above any forced air inlet located within 10 feet. The chimney must extend at least five feet above the highest connected equipment draft hood outlet or flue collar.

Chimney

Termination More Than 10 Feet From Ridge, Wall or Parapet

C

HECK

2 - A

NY SOLID OR LIQUID FUEL APPLIANCES VENTED

INTO THIS CHIMNEY CHANNEL

Solid fuel appliances include fireplaces, wood stoves, coal furnaces, and incinerators.

13

E

XTERIOR MASONRY

C

HIMNEYS

- C

ATEGORY

I F

URNACES

O

NLY

Liquid fuel appliances include oil furnaces, oil-fired boilers and oil-fired water heaters.

Appliances which burn propane (sometimes referred to as LP

(liquefied petroleum)) gas are considered gas-fired appliances.

C

HECK

3 - C

HIMNEY

C

ROWN

C

ONDITION

.

Damage from condensate usually shows up first in the crown.

If any of the following trouble signs are present, the condition of the crown is not satisfactory: a) Crown leaning b) Bricks missing c) Mortar missing d) Tile liner cracked e) No tile liner f) Salt staining at mortar joints. (White stains, and mortar becomes sandy and/or erodes.)

For problems a, b, or c, see Fix 3. If problems d, e, or f are present, see Fix 4. IMPORTANT: It may be necessary to follow both Fix 3 and Fix 4.

C

HECK

4 - D

EBRIS IN

C

LEANOUT

A cleanout (dropleg) must be present such that the upper edge of the cleanout cover is at least 12 inches below the lower edge of the lowest chimney inlet opening.

A chimney without a cleanout could become partially blocked by debris. If no cleanout is present, the chimney must be relined (Fix 4). Remove the cleanout cover, and examine the cleanout for debris. If significant amounts of any of the following are found:

• Fuel oil residue

• Bricks

• Mortar or sand

• Pieces of the tile liner

• Rusted pieces of the metallic liner - reline the chimney

(Fix 4).

C

HECK

5 - L

INER

C

ONDITION

.

If a metal liner is present, it must be checked. It cannot be assumed that all existing metal liners are correctly installed and in good condition.

Remove the lowest existing vent connector, and examine the inside of the elbow or tee at the base of the liner. A small amount of soot may be considered acceptable, provided the installer vacuums it away. If rusted pieces of the liner have collected here, the metal liner must be removed and replaced (Fix 4).

Next, gently tap the inside of the liner with a Phillips screwdriver. If the screwdriver perforates the liner, or if the tapping does not sound like metal hitting metal, the liner must be removed and replaced (Fix 4).

Remember that all appliances must be vented inside the liner.

Venting one appliance inside the liner and another appliance outside the liner is not acceptable.

Next, use a flashlight and small mirror to sight up the liner. B vent must be supported so as to not come into direct contact with the chimney walls or tile liner. If it is not, it can probably be rehung so as to be acceptable. A thimble or fire stop may be helpful here.

Flexible liners should be hung straight or nearly straight. If it is spiraled in the chimney and in good condition, it should be rehung. To do this, break the top seal; pull up and cut off the excess liner length, and refit the top seal. Use caution when doing this, as the cut edges of flexible liners may be sharp.

The surfaces of the liner must be physically sound. If gaps or holes are present, the metal liner must be removed and replaced (Fix 4). Finally, confirm that the metal liner is the correct size for the appliances to be installed. Use the GAMA tables and rules.

If a metal liner is not present, a clay tile liner must be present, or the chimney must be lined (Fix 4).

Use a flashlight and small mirror at the cleanout or vent connector to inspect the clay tile liner. If any of the following problems are present:

• Tile sections misaligned

• Tile sections missing

• Gaps between tile sections

• Signs of condensate drainage at the cleanout or vent connectors

• Mortar protruding from between tile sections

• Use of sewer pipe or drainage pipe rather than an approved fire clay tile reline the chimney (Fix 4).

Next, measure the size of the liner. It may be possible to do this from the cleanout. The liner must be at least as large as the minimum size established by the tables in National Fuel

Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the

National Standard of Canada, CAN/CSA B149.1 and CAN/CSA

B149.2 - latest editions and amendments. If the liner is too small or too large, then the chimney must be relined (Fix 4).

C

HECK

6 - D

ILUTION

A

IR

.

If gas-fired appliances are to be vented into a clay tile liner, a source of dilution air is required.

Dilution air cannot be obtained through:

• Induced draft appliances

• Natural draft appliances with vent dampers

Sufficient dilution air can ordinarily be obtained through the draft hood of a natural draft appliance only if the appliance’s vent connector does not include a vent damper. If dilution air will not be available, the chimney must be relined (Fix 4).

14

E

XTERIOR MASONRY

C

HIMNEYS

- C

ATEGORY

I F

URNACES

O

NLY

C

HECK

7 - C

OMPLETE THE

I

NSTALLATION

.

F

IX

3 - R

EBUILD THE

C

ROWN

If Checks 1 through 6 have been satisfactory, and the liner is an acceptable size as determined by the tables in National Fuel

Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the

National Standard of Canada, CAN/CSA B149.1 and CAN/CSA

B149.2 - latest editions and amendments, then the clay tile liner can probably be used as a vent for the gas appliances.

However, the installer must keep in mind the following factors which may render the tile liner unsuitable for use as a vent:

• Extremely cold weather

• Long vent connectors

• Masonry chimneys with no air gap between the liner and the bricks. (In practice, this can be difficult to detect.)

• Exterior chimneys (The tables in National Fuel Gas

Code NFPA 54/ANSI Z223.1 - latest edition and in the

National Standard of Canada, CAN/CSA B149.1 and

CAN/CSA B149.2 - latest editions and amendments assume interior chimneys.)

If, in the judgment of the local gas utility, installer, and/or local codes; one or more of the above factors is likely to present a problem, the chimney must be relined (Fix 4).

F

IX

1 - L

INER

T

ERMINATION

For further information on relining, see Fix 4.

F

IX

2 -C

HANGE

V

ENTING

A

RRANGEMENTS

If the chimney crown is damaged, a qualified mason must repair it in accordance with nationally recognized building codes or standards. One such standard which may be referenced is the Standard for Chimneys, Fireplaces, Vents, and Solid Fuel

Burning Appliances, ANSI/NFPA 211.

F

IX

4 - R

ELINING

Relining options include B vent and flexible liners.

If the chimney has diagonal offsets, B vent probably cannot be used.

If B vent is to be used, it must be supported adequately. Supports (such as fire stops or thimbles) must be used to prevent the B vent from coming into direct contact with the tile liner or chimney walls. Direct contact would result in higher heat loss, with an increased possibility of poor venting system performance.

It is not acceptable to vent one appliance inside the B vent and other appliances outside. The excess space between the B vent and the chimney walls must be covered at the top of the chimney by a weatherproof, corrosion resistant flashing.

The B vent should then be topped with a listed vent cap. The listed vent cap will, when installed per the manufacturer’s instructions, prevent problems due to rain, birds, or wind effects.

Any cap or roof assembly used with a liner must be approved by the liner manufacturer for such use. The liner and cap/roof assembly must then terminate above the roof in accordance with the manufacturer’s instructions.

In some cases, a shorter extension above the roof may be possible with a liner than would be required with a masonry chimney.

If the masonry chimney has more than one channel, it may be possible to vent the gas appliances into one channel and vent the solid or liquid fuel appliance(s) into another channel(s). Do not vent an 80+ Furnace inside of a metal liner with other appliances vented outside the liner.

Alternatively, the homeowner may agree to discontinue use of the fireplace (solid fuel appliance). If so, the tile liner must be cleaned to remove creosote buildup. The fireplace opening must then be permanently sealed.

If oil-fired appliance(s) are being replaced by gas-fired appliance(s), the tile liner must first be cleaned to remove the fuel oil residue.

If none of the above options is practical, the furnace may need to be vented vertically with a B Vent.

Under some conditions, a 90%+ furnace could be installed rather than an 80% furnace. The 90%+ furnace can be vented horizontally or vertically through PVC pipe.

15

A B-vent installed as described in this section is considered to be an enclosed vent system, and the sizing tables in National

Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the National Standard of Canada, CAN/CSA B149.1 and CAN/

CSA B149.2 - latest editions and amendments may be used.

If a flexible liner is to be used, it must be made of the proper materials:

• For most residential applications, an aluminum liner should be acceptable.

• If the combustion air supplied to the furnace will be contaminated with compounds containing chlorine or fluorine, a liner of AL 29-4C stainless steel should be used. Common sources of chlorine and fluorine compounds include indoor swimming pools and chlorine bleaches, paint strippers, adhesives, paints, varnishes, sealers, waxes (which are not yet dried) and solvents used during construction and remodeling.

Various commercial and industrial processes may also be sources of chlorine/fluorine compounds.

• Heavier gauge 300 and 400 series stainless steel liners were developed for use with oil or solid fuel appliances.

They are not suitable for use with gas-fired appliances.

Flexible liners specifically intended and tested for gas applications are listed in the UL “Gas and Oil

Equipment Directory”. (UL Standard 1777).

E

LECTRICAL

C

ONNECTIONS

For sizing of flexible liners, see Note 22 and the tables in the

National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the National Standard of Canada, CAN/CSA B149.1 and

CAN/CSA B149.2 - latest editions and amendments.

To install the liner, read and follow the liner manufacturer’s instructions and your local codes. Excess liner length should be pulled out of the chimney and cut off. Use caution when doing this, as the cut edges of flexible liners may be sharp. Do not spiral excess liner inside of the chimney. Support the liner as recommended by the liner manufacturer.

Some manufacturers of flexible liners offer an insulation sleeve designed to be added to the liner before it is installed in the chimney. (Poured insulation, either vermiculite or other materials, is no longer recommended.) Insulation will need to be added to the flexible liner if:

• It is required by the liner manufacturer’s instructions.

• The previous liner was properly sized and installed, and suffered from condensation damage.

• It is required by your local building codes.

Even if none of those three conditions exist which require additional liner insulation, the installer may wish to consider it if:

• The local climate is very cold.

• The chimney is very tall.

• The vent connectors used are very long or have a large number of elbows.

• Local experience indicates that flexible liners installed without insulation are likely to have condensation problems.

Insulation must be selected and installed in accordance with the liner manufacturer’s instructions.

Finally, cap the chimney and terminate the liner in accordance with the liner manufacturer’s instructions.

E

LECTRICAL

C

ONNECTIONS

WARNING

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

.

CAUTION

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

.

WARNING

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

.

W

IRING

H

ARNESS

The wiring harness is an integral part of this furnace. Field alteration 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 replacement wiring must be a copper conductor.

115 V

OLT

L

INE

C

ONNECTIONS

Before proceeding with electrical connections, ensure that the supply voltage, frequency, and phase correspond to that specified on the unit rating plate. Power supply to the furnace must be NEC 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 protection specified on the unit rating plate. An electrical disconnect must be provided at the furnace location.

Line voltage wiring must enter into the junction box provided

with the furnace.

NOTE: Line polarity must be observed when making field connections.

F

OSSIL

F

UEL

A

PPLICATIONS

This furnace can be used in conjunction with a heat pump in a fossil fuel application. A fossil fuel application refers to a combined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost efficient means of heating (heat pump, gas furnace, or both).

16

E

LECTRICAL

C

ONNECTIONS

A heat pump thermostat with two stages of heat is required to properly use a furnace in conjunction with a heat pump. Refer to the fossil fuel kit installation instructions for additional thermostat requirements.

Strictly follow the wiring guidelines in the fossil fuel kit installation instructions. All furnace connections must be made to the furnace integrated control module and the FURNACE terminal strip on the fossil fuel control board.

J

UNCTION

B

OX

R

ELOCATION

WARNING

T

O

 

PREVENT

 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ELECTRIC

 

SHOCK

, 

DISCONNECT

 

ELECTRICAL

 

POWER

 

BEFORE

 

INSTALLING

 

OR

 

SERVICING

 

THIS

 

UNIT

.

1. Remove both doors from the furnace.

2. Remove and save the screws holding the junction box to the right side of the furnace.

3. Models that have the junction box located in the burner compartment will need to move the junction box directly over.

4. Attach the junction box to the left side of the furnace, using the screws removed in step 2.

5. Check the location of the wiring. Confirm that it will not be damaged by heat from the burners or by the rotation of the fan. Also confirm that wiring location will not interfere with filter removal or other maintenance.

WARNING

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

E

DGES

 

OF

 

SHEET

 

METAL

 

HOLES

 

MAY

 

BE

 

SHARP

. U

SE

 

GLOVES

 

AS

 

A

 

PRECAUTION

 

WHEN

 

REMOVING

 

HOLE

 

PLUGS

.

Line voltage connections can be made through either the right or left side panel. The furnace is shipped configured for a right side electrical connection. To make electrical connections through the opposite side of the furnace, the junction box must be relocated to the left side prior to making electrical connections. To relocate the junction box, perform the following steps.

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.

24 V

OLT

T

HERMOSTAT

W

IRING

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. The following figure shows connections for a “heat only” system and “heat/cool system”.

Heating

Room

Thermostat

Heating/Cooling

Room Thermostat

W W

Furnace

Control

Furnace

Control

Remote

Condensing

Unit

Typical Field Wiring (24 VAC Control Circuit)

After the junction box is in the desired location, use washers to connect field-supplied conduit to the junction box in accordance with NEC and local codes. Connect hot, neutral, and ground wires as shown in the furnace wiring diagram. The wires and ground screw are located in the furnace junction box.

NOTE: In downflow applications the power leads should be routed through the supplied wire tabs when rotating junction box to the left side.

Low voltage wires may be connected to the terminal strip.

IMPORTANT NOTE: To avoid possible equipment malfunction, route the low voltage wires to avoid interference with filter removal or other maintenance.

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.

A single-stage thermostat with only one heating stage can be used to control this furnace.

GME8 F

URNACE WITH

2-S

TAGE

C

ONDENSER

F

IELD

W

IRING

The GME8 model furnaces may be used with a 2-stage outdoor air conditioner. A two stage cooling/single stage gas heat thermostat 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.

17

G

AS

S

UPPLY AND

P

IPING

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 GME8 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 wiring schematic below.

Furnace

Control

Y

Y1

Y1

T3

ECO-TECH

MOTOR

T5

T4

T2

Y2

Y2

Field

Supplied

Relay

Heating/Cooling

Room Thermostat

Remote Condensing Unit

Field Wiring for GME8 Furnace with 2-Stage Condenser

• Record the reading.

• Divide this reading by 10.

• Set the heat anticipator on the thermostat to match this reading.

Example: If the reading on the ammeter is “4”, divide this by

10. The anticipator setting will be .4 amps.

115 V

OLT

L

INE

C

ONNECTION OF

A

CCESSORIES

(E

LECTRONIC

A

IR

C

LEANER

Electronic Air Cleaner

)

WARNING

HIGH VOLTAGE !

T

O

 

AVOID

 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ELECTRICAL

 

SHOCK

, 

DISCONNECT

 

ELECTRICAL

 

POWER

 

BEFORE

 

SERVICING

 

OR

 

CHANGING

 

ANY

 

ELECTRICAL

 

WIRING

.

The furnace 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:

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, mounting, 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 and the neutral terminal is identified as

NEUTRAL. All field wiring must conform to applicable codes.

Connections should be made as shown in the following illustration.

Hot 120 VAC

Control Module

Neutral 120 VAC

S

ETTING THE

H

EAT

A

NTICIPATOR

The following method should be used in measuring the amp draw of the control circuit to assure proper adjustment of the thermostat heat anticipator

• Wrap the “R” leg around a clip-on ammeter 10 times.

• Energize the furnace in the heat mode.

Air Cleaner

Optional

Accessories

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 energized.

18

G

AS

S

UPPLY AND

P

IPING

24 V

AC

H

UMIDIFIER

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 the supplied brown jumper wire to the pressure switch terminal. Reconnect the yellow wire to the “piggyback” terminal on the brown jumper and then connect the 24 VAC line of the humidifier to the stripped end of the brown wire.

Using a wire nut or a field-supplied quick connect terminal can make this connection. The wiring must conform to all local and national codes. Connect 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 transformer). DO NOT

CONNECT 115V HUMIDIFIER TO THESE TERMINALS.

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).

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.

P

ROPANE

G

AS

C

ONVERSION

G

AS

S

UPPLY AND

P

IPING

WARNING

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.

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

.

CAUTION

T

O

 

PREVENT

 

UNRELIABLE

 

OPERATION

 

OR

 

EQUIPMENT

 

DAMAGE

, 

THE

 

INLET

 

GAS

 

SUPPLY

 

PRESSURE

 

MUST

 

BE

 

AS

 

SPECIFIED

 

ON

 

THE

 

UNIT

 

RATING

 

PLATE

 

WITH

 

ALL

 

OTHER

 

HOUSEHOLD

 

GAS

 

FIRED

 

APPLIANCES

 

OPERATING

.

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 “Propane Gas and/or

High Altitude Installations” section for details.

Inlet gas supply pressures must be maintained within the ranges specified in the following table. The supply pressure must be constant and available 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 prevent unit overfiring.

Inlet Gas Supply Pressure

Natural Gas

Minimum: 5.0" w.c.

Maximum:10.0" w.c.

Propane Gas Minimum: 11.0" w.c.

Maximum:13.0" w.c.

Models using Single Stage Gas Valves

Altitude

0-7000

Gas

Natural

Kit

None

Orifice

#45

Manifold

Pressure

3.5" w.c.

Pressure

Switch

None

NOTE: Adjusting the minimum supply pressure below the limits in the above table could lead to unreliable ignition. Gas input to the burners must not exceed the rated input shown on the rating plate. Overfiring of the furnace can result in premature heat exchanger failure. Gas pressures in excess of 13 inches water column can also cause permanent damage to the gas valve.

At all altitudes, the manifold pressure must be within 0.3 inches w.c. of that listed in the Specification Sheet applicable to your model for the fuel used. At all altitudes and with either fuel, the air temperature rise must be within the range listed on the furnace nameplate. Should this appliance be converted to LP, refer to the instructions included in the factory authorized LP conversion kit.

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

NOTE: GMS81405DN** models utilize #43 orifices in Natural gas applications.

Gas Altitude

Natural

Propane LPT-03

Kit

None

#55

Models using 2-Stage Gas Valves

10.0" w.c.

Orifice

Manifold Pressure Pressure

High

Stage

Low

Stage

Switch

Change

#45 3.5" w.c. 1.9" w.c.

None

0-7000

H

IGH

A

LTITUDE

D

ERATE

Propane LPM-06 #55 10.0" w.c. 6.0" w.c.

None

IMPORTANT NOTE: The furnace will naturally derate itself with altitude. Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure. This can cause poor combustion and equipment failure.

19

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

NOTE: GMH81405DN** models utilize #43 orifices in Natural gas applications.

G

AS

S

UPPLY AND

P

IPING

Contact your 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.

G

AS

P

IPING

C

ONNECTIONS

WARNING

T

O

 

AVOID

 

POSSIBLE

 

UNSATISFACTORY

 

OPERATION

 

OR

 

EQUIPMENT

 

DAMAGE

 

DUE

 

TO

 

UNDERFIRING

 

OF

 

EQUI PMENT

, 

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.

Length of

Pipe in Feet

10

20

30

70

80

90

40

50

60

1/2"

132

92

73

63

56

50

46

43

40

Natural Gas Capacity of Pipe

In Cubic Feet of Gas Per Hour (CFH)

Nominal Black Pipe Size

3/4"

278

190

152

130

115

105

96

90

84

1"

520

350

285

245

215

195

180

170

160

1 1/4"

1050

730

590

500

440

400

370

350

320

100 38 79 150 305

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

0.60 Specific Gravity Gas)

1 1/2"

1600

1100

980

760

670

610

560

530

490

460

• Install a 1/8" NPT pipe plug fitting, accessible for test gage connection, immediately upstream of the gas supply connection to the furnace.

• Use two pipe wrenches when making 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.

• 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.

–

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.

Location of Manual Valve

(Installed Ahead of

Ground Joint Pipe Union)

Height Required

By Local Code

CFH = BTUH Furnace Input

Heating Value of Gas (BTU/Cubic Foot)

Ground Joint Pipe Union

To Be Installed Ahead of

Gas Valve

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.

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

• Use pipe joint compound on male threads only. Pipe joint compound must be resistant to the action of the fuel used.

• 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.

U

Reducing Coupling

1/2” x 1/8” with 1/8”

Pipe Plug to Measure

Line Gas Pressure

PFLOW

I

Drip Leg

General Furnace Layout

NSTALLATIONS

``

20

When the gas piping enters through the right side of the fur-

nace, the installer must supply the following fittings (starting

from the gas valve):

• 90 degree elbows (2).

• Close nipple.

• Straight pipe to reach the exterior of the furnace .

G

AS

S

UPPLY AND

P

IPING

A ground joint union, drip leg, and manual shutoff valve must also be supplied by the installer. In some cases, the installer may also need to supply a transition piece from 1/2" to another pipe size.

This unit must be isolated from the gas supply system by closing its manual shutoff valve before pressure testing of gas supply piping system with test pressures equal to or less than 1/2 psig (3.48 kPa).

P

ROPANE

G

AS

T

ANKS AND

P

IPING

When the gas piping enters through the left side of the furnace, the installer must supply the following fittings (starting from the gas valve):

• Straight pipe to reach the exterior of the furnace.

C

G

•

OUNTERFLOW

AS

P

A ground joint union, drip leg, and manual shutoff valve must also be supplied by the installer. In some cases, the installer may also need to supply a transition piece from 1/2 inch to another pipe size.

IPING

C

I

NSTALLATIONS

HECKS

WARNING

I

F

 

THE

 

GAS

 

FURNACE

 

IS

 

INSTALLED

 

IN

 

A

 

BASEMENT

, 

AN

 

EXCAVATED

 

AREA

 

OR

 

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

 

GAS

 

CAN

   

SETTLE

 

IN

 

ANY

 

LOW

 

AREAS

 

OR

 

CONFINED

 

SPACES

.

• 

P

ROPANE

 

GAS

 

ODORANT

 

MAY

 

FADE

, 

MAKING

 

THE

 

GAS

 

UNDETECTABLE

   

EXCEPT

 

WITH

 

A

 

WARNING

 

DEVICE

.

When the gas piping enters through the left side of the furnace, the installer must supply a straight pipe to reach the exterior of the furnace.

A ground joint union, drip leg and manual shutoff valve must also be supplied by the installer. In most cases, the installer may also need to supply a transition piece from ½” to another pipe size. When the gas piping enters through the right side of the furnace, the installer must supply the following fittings (starting at the gas valve):

• 90 Degree Elbow

• Close Nipple

• 90 Degree Elbow

• Straight Pipe to Reach Exterior of Furnace.

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 3 of this manual.

All propane gas equipment must conform to the safety standards of the National Board of Fire Underwriters, NBFU Manual

58.

Before placing unit in operation, leak test the unit and gas connections.

T

O

OR

 

AVOID

 

THE

 

POSSIBILITY

 

OF

 

WARNING

EXPLOSION

 

OPEN

 

FLAME

 

TO

 

TEST

 

FOR

 

LEAKS

.

 

OR

 

FIRE

, 

NEVER

 

USE

 

A

 

MATCH

 

For satisfactory operation, propane gas pressure must be 10 inch WC 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.

Check for leaks using an approved chloride-free soap and water solution, an electronic combustible gas detector, or other approved testing methods.

Complete information regarding tank sizing for vaporization, recommended regulator settings, and pipe sizing is available from most regulator manufacturers and propane gas suppliers.

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

Since propane gas will quickly dissolve white lead and most standard 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 installations and piping.

21

C

IRCULATING

A

IR AND

F

ILTERS

First Stage

Regulator

200 PSIG

Maximum

5 to 15 PSIG

(20 PSIG Max.)

P

ROPANE

G

AS

P

IPING

C

HARTS

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

Tubing

Length,

Feet

3/8"

Tubing Size, O.D. Type L

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

Nominal Pipe Size

Schedule 40

1/2" 3/4"

10

20

30

40

50

60

80

100

125

150

175

200

730

500

400

370

330

300

260

220

200

190

170

160

1,700

1,100

920

850

770

700

610

540

490

430

400

380

3,200

2,200

2,000

1,700

1,500

1,300

1,200

1,000

900

830

780

730

5,300

3,700

2,900

2,700

2,400

2,200

1,900

1,700

1,400

1,300

1,200

1,100

8,300

5,800

4,700

4,100

3,700

3,300

2,900

2,600

2,300

2,100

1,900

1,800

3,200

2,200

1,800

1,600

1,500

1,300

1,200

1,000

900

830

770

720

7,500

4,200

4,000

3,700

3,400

310

2,600

2,300

2,100

1,900

1,700

1,500

Sizing Between Second Stage and Appliance Regulator*

Maxim um Propane Capacities lis ted are bas ed on 2 ps ig pres s ure drop at 10 ps ig s etting.

Capacities in 1,000 BTU/hour.

Pipe or

Tubing

Tubing Size, O.D. Type L

Nominal Pipe Size

Schedule 40

Length,

Feet

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

50

60

80

100

10

20

30

40

125

150

200

250

39

26

21

19

18

16

13

11

10

9

8

8

92

62

50

41

37

35

29

26

24

21

19

17

199

131

107

90

79

72

62

55

48

43

39

36

329

216

181

145

131

121

104

90

81

72

66

60

501

346

277

233

198

187

155

138

122

109

100

93

935

630

500

427

376

340

289

255

224

202

187

172

275

189

152

129

114

103

89

78

69

63

54

48

567 1,071 2,205 3,307

393 732 1,496 2,299

315

267

237

217

185

162

146

132

112

100

590

504

448

409

346

307

275

252

209

185

1,212 1,858

1,039 1,559

913

834

724

630

567

511

439

390

1,417

1,275

1,066

976

866

787

665

590

C

D

UCTWORK

Propane Gas Installation (Typ.)

IRCULATING

- A

IR

A

F

IR AND

LOW

F

ILTERS

Continuous

11" W.C.

Second Stage

Regulator

WARNING

N

EVER

 

ALLOW

 

THE

 

PRODUCTS

 

OF

 

COMBUSTION

, 

INCLUDING

 

CARBON

 

MONOXIDE

, 

TO

 

ENTER

 

THE

 

RETURN

 

DUCT

 

WORK

 

OR

 

CIRCULATION

 

AIR

 

SUPPLY

.

Duct systems and register sizes must be properly designed for the CFM and external static pressure rating of the furnace.

Ductwork should be designed in accordance with the recommended methods of “Air Conditioning Contractors of America”

Manual D.

A duct system must be installed 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 connected to the furnace. NOTE: Ductwork must never be attached to the back of the furnace. For installations requiring more than 1800 CFM, use a bottom return or two sided return.

Supply and return connections to the furnace may be made with flexible joints 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. Furnace is shipped with the top flanges in the flat position. Before installing a coil or ducts, the flanges must be bent 90°. A room, closet, or alcove must not be used as a return air chamber.

When the furnace is used in connection with a cooling unit, the furnace should be installed in parallel with or on the upstream side of the cooling unit to avoid condensation in the heating element. With a parallel 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 airstream. The access panel must be made to prevent air leaks when the furnace is in operation.

NOTE: In a horizontal installation the air conditioning coil must be adequately supported by proper brackets and supports. Inadequate coil support can result in furnace cabinet distortion and air leakage.

When the furnace is heating, the temperature of the return air entering the furnace must be between 55°F and 100°F.

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 a duct sealed to the furnace casing and terminating outside the space containing the furnace.

C

HECKING

D

UCT

S

TATIC

Refer to your furnace rating plate for the maximum ESP (external duct static) rating.

Total external static refers to everything external to the furnace cabinet. Cooling coils, filters, ducts, grilles, registers must all be considered when reading your total external static pressure. The supply duct pressure must be read between the fur-

22

S

TART

-

UP

P

ROCEDURE AND

A

DJUSTMENT

nace 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 tripping and heat exchanger failure.

To determine total external duct static pressure, proceed as follows;

1. With clean filters in the furnace, use a draft gauge

(inclined manometer) 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

Pressure)

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 rating plate, check for closed dampers, registers, undersized and/or oversized poorly laid out duct work.

F

R

ILTERS

ETURN

- R

A

IR

EAD

D

T

HIS

S

ECTION

UCTWORK

B

EFORE

I

NSTALLING

T

HE

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 filters, the warranty will be voided.

NOTE: An undersized opening will cause reduced airflow. The bottom return is set up as a knock out.

U

PRIGHT

I

NSTALLATIONS

Depending on the installation and/or customer preference, differing filter arrangements can be applied. Filters can be installed in the central return register or a side panel external filter rack kit (upflows), or the ductwork above a downflow furnace. As an alternative, a media air filter or electronic air cleaner can be used as the primary filter.

C

IRCULATION

A

IR

F

ILTERS

One of the most common causes of a problem in a forced air heating system is a blocked or dirty filter. Circulating air filters must be inspected monthly for dirt accumulation and replaced if necessary. Failure to maintain clean filters can cause premature heat exchanger failure.

A new home may require more frequent replacement until all construction dust and dirt is removed. Circulating air filters are to be installed in the return air duct external to the furnace cabinet.

MINIMUM FILTER SIZES for DISPOSABLE FILTERS

FURNACE INPUT

40M

60M

80M

100M

120M

140M

FILTER SIZE

320 in

2

483 in

2

640 in

2

800 in

2

738 in

2

738 in

2

DISPOSABLE NOMINAL 300 F.M. FACE VELOCITY

Checking Static Pressure

(80% Furnace Shown, 90% Similar)

H

ORIZONTAL

I

NSTALLATIONS

Filters must be installed in either the central return register or in the return air duct work.

S

EQUENCE OF

O

PERATION

(I

NTEGRATED

I

GNITION

C

ONTROL

)

23

Refer to Timing Charts for sequencing.

NOTE: Dip switch positions referenced in this section applies to *(M,D)H8 models only.

P

OWER

U

P

•

115 VAC power applied to furnace.

•

Integrated ignition control performs internal checks.

•

Integrated ignition LED will light.

S

TART

-

UP

P

ROCEDURE AND

A

DJUSTMENT

•

Integrated ignition control monitors safety circuits continuously.

•

Furnace awaits call from thermostat.

H

EATING

M

ODE

(M

ODE

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 on high speed for the selected heat off delay period.

•

Furnace awaits the next call from thermostat.

(M

ODE

DIP S

WITCH 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 highstage 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 the selected heat off delay period.

•

Furnace awaits the next call from thermostat.

C

OOLING

M

ODE

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 contacts 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.

24

S

TART

-

UP

P

ROCEDURE AND

A

DJUSTMENT

F

AN

O

NLY

M

ODE

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.

S

TART

-

UP

P

ROCEDURE

A

ND

A

DJUSTMENT

Furnace must have a 115 VAC power supply properly connected and grounded. Proper polarity must be maintained for correct operation. An interlock switch prevents furnace operation if the blower door is not in place. Keep the blower access door in place except for inspection and maintenance.

This furnace is also equipped with a self-diagnosing electronic control module. In the event a furnace component is not operating properly, the control module LED will flash on and off in a factory-programmed sequence, depending on the problem encountered. This light can be viewed through the observation window in the blower access door. Refer to the Troubleshoot-

ing Chart for further explanation of the lighting codes.

Follow the start-up and adjustment items, refer to further information in Section XIII, Operational Checks (see table of contents, pages 2-3 for page number)..

F

URNACE OPERATION

Purge gas lines of air prior to start-up. Do not purge lines into an enclosed burner compartment.

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.

NOTE: An interlock switch prevents furnace operation if the blower door is not in place. Keep the blower access doors in place except for inspection and maintenance.

F

URNACE

S

TART

-

UP

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.

NOTE: This furnace is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

5. White-Rodgers Model 36G22 or 36G54: Push the switch to the OFF position.

Honeywell VR8215 or VR9205: Slide the switch to the

OFF position.

6. Wait five minutes to clear out any gas. Then smell for gas, including near the floor.

7. If gas can be smelled following the five minute waiting period in Step 6, immediately follow the instructions on

Page 3 of this manual. If you do not smell gas after five minutes:

White-Rodgers Model 36G22 or 36G54: Push the switch

to the ON position.

Honeywell VR8215 or VR9205: Slide the switch to the

ON position.

8. Replace the door on the front of the furnace.

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

10. Turn on the electrical power supply to the furnace.

11. Set the room thermostat to the desired temperature.

NOTE: There is an approximate 30 second delay between thermostat energizing and burner firing.

F

URNACE

S

HUTDOWN

1. Set the thermostat to lowest setting.

2. Turn off the electrical power supply to the furnace.

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

4. Remove the burner compartment door.

5. White-Rodgers Model 36G54: Push switch to the OFF position.

Honeywell VR8215 or VR9205: Slide the switch to the

OFF position.

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

7. Replace the door on the unit.

G

AS

S

UPPLY

P

RESSURE

M

EASUREMENT

CAUTION

T

O

 

PREVENT

 

UNRELIABLE

 

OPERATION

 

OR

 

EQUIPMENT

 

DAMAGE

, 

THE

 

INLET

 

GAS

 

SUPPLY

 

PRESSURE

 

MUST

 

BE

 

AS

 

SPECIFIED

 

ON

 

THE

 

UNIT

 

RATING

 

PLATE

 

WITH

 

ALL

 

OTHER

 

HOUSEHOLD

 

GAS

 

FIRED

 

APPLIANCES

 

OPERATING

.

25

S

TART

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P

ROCEDURE AND

A

DJUSTMENT

WARNING

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

.

M

ODELS USING

S

INGLE

S

TAGE

G

AS

V

ALVES

The line pressure supplied to the gas valve must be within the range specified below. 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 pressure must be measured with the unit OFF. To measure inlet pressure, use the following procedure.

Gas Valve

On/Off

Selector

Switch

Inlet Pressure

Tap

OUTLET

Pressure Regulator

Adjustment

(Under Cap Screw)

Inlet

Pressure

Tap

Outlet Pressure

Tap

INLET

White-Rodgers Model 36G22

Pressure Regulator

(under cap screw)

Outlet

Pressure

Tap

4. Attach a hose and manometer to the outlet pressure barb fitting (Honeywell valve) or inlet pressure boss (White-

Rodgers valve).

5. Turn ON the gas supply.

6. Turn On power and close thermostat “R” and “W” contacts to provide a call for heat.

7. Using a leak detection solution or soap suds, check for leaks at outlet pressure boss plug (Honeywell valve) or screw (White-Rodgers valve). Bubbles forming indicate a leak. SHUT OFF GAS AND REPAIR ALL LEAKS

IMMEDIATELY!

8. Measure the gas supply pressure with burners firing.

Adjust supply pressure using the Inlet Gas Supply

Pressure table shown below. If supply pressure reading

differs from the table, make necessary adjustments to pressure regulator, gas piping size, etc., and/or consult with local gas utility.

Natural Gas

Propane Gas

Inlet Gas Supply Pressure

Minimum:5.0" W.C. Maximum :10.0" W.C.

Minimum:11.0" W.C. Maximum :13.0" W.C.

9. Turn OFF all electrical power and gas supply to the system.

10. Remove the manometer hose from the hose barb fitting or inlet pressure boss.

11. Replace inlet pressure tap: a. Honeywell VR8215 valve:

Remove the 1/8” NPT hose barb fitting from the inlet pressure tap. Replace the inlet pressure boss plug and seal with a high quality thread sealer.

b. White-Rodgers 36G22 valve:

Turn inlet pressure test screw in to seal pressure port

(clockwise, 7 in-lb minimum).

12. Retest for leaks. If bubbles form, shut down gas and repair leaks immediately.

13. Turn ON electrical power and gas supply to the system.

14. Turn valve switch ON.

M

ODELS USING

T

WO

S

TAGE

G

AS

V

ALVES

Gas Valve On/Off

Selector Switch

Honeywell Model VR8215 (Single-Stage)

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. Inlet pressure tap connections: a. Honeywell VR8215 Valve:

Remove the inlet pressure boss plug. Install an 1/8”

NPT hose barb fitting into the outlet pressure tap.

b. White-Rodgers 36G22 valve:

Back inlet pressure test screw (inlet pressure boss) out one turn (counterclockwise, not more than one turn).

CAUTION

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

.

The line pressure supplied to the gas valve must be within the range specified below. The supply pressure can be measured at the gas valve inlet pressure boss or at a hose fitting installed in the gas piping drip leg. The supply pressure must be measured with the burners operating. To measure the gas supply pressure, use the following procedure.

26

INLET OUTLET

S

TART

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UP

P

ROCEDURE AND

A

DJUSTMENT

Open to

Atmosphere

Manometer

Hose

Common

Terminal(C)

High Fire Coil

Terminal (HI)

Low Fire Coil

Terminal (LO) i

Gas Valve On/Off

Selector Switch

White-Rodgers Model 36G54 (Two-Stage)

Open to

Atmosphere

Manometer

Hose

Outlet

Pressure Boss

High Fire Regulator

Adjust

Regulator

Vent

Manometer

Inlet Pressure Tap

1/8 NPT

Low Fire

Regulator

Adjust

Inlet

Pressure

Boss

Manometer

On/Off Switch

High Fire Coil

Terminal (HI)

Coaxial Coil

Terminal (M)

Common

Terminal(C)

White-Rodgers Model 36G54 Connected to Manometer

Regulator

Vent

High Fire

Regulator

Adjust

Gas Valve On/Off

Selector Switch

Low Fire

Regulator

Adjust

Honeywell Model VR9205 (Two-Stage)

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 boss or the gas piping drip leg. See Honeywell VR9205 gas valve figure or White-Rodgers 36G54 gas valve figure for location of inlet pressure boss.

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 boss 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.

Inlet Gas Supply Pressure

Natural Gas Minimum: 5.0" w.c.

Maximum:10.0" w.c.

Propane Gas Minimum: 11.0" w.c.

Maximum:13.0" w.c.

If supply pressure differs from table, make the necessary adjustments 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.

27

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P

ROCEDURE AND

A

DJUSTMENT

G

AS

M

Gas Line

Gas

Shutoff

Valve

Drip Leg Cap

With Fitting

Gas Line

To Furnace

Manometer Hose

Measuring Inlet Gas Pressure (Alt. Method)

ANIFOLD

P

RESSURE

M

EASUREMENT

WARNING

AND

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

.

A

DJUSTMENT

CAUTION

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

.

M

ODELS USING

S

INGLE

S

TAGE

G

AS

V

ALVES

This valve is shipped from the factory with the regulator preset

(see control label).

Consult the appliance rating plate to ensure burner manifold pressure is as specified. If another outlet pressure is required, follow these steps.

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 VR8215 valve:

Remove the outlet pressure boss plug. Install an 1/8”

NPT hose barb fitting into the outlet pressure tap.

b. White-Rodgers 36G22 valve:

Back outlet pressure test screw (outlet pressure boss) 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 boss

(White-Rodgers valve).

5. Turn ON the gas supply.

6. Turn ON power and close thermostat “R” and “W” contacts to provide a call for heat.

7. Using a leak detection solution or soap suds, check for leaks at outlet pressure boss plug (Honeywell valve) or screw (White-Rodgers valve). Bubbles forming indicate a leak. SHUT OFF GAS AND REPAIR ALL LEAKS

IMMEDIATELY!

8. Measure the gas manifold pressure with burners firing.

Adjust manifold pressure using the Manifold Gas

Pressure table shown below.

Manifold Gas Pressure

Natural Gas

Propane Gas

3.5" w.c.

10.0" w.c.

9. Remove regulator cover screw from the outlet pressure regulator and turn screw clockwise to increase pressure or counterclockwise to decrease pressure. Replace regulator cover screw.

10. Turn OFF all electrical power and gas supply to the system.

11. Remove the manometer hose from the hose barb fitting or outlet pressure boss.

12. Replace outlet pressure tap: a. Honeywell VR8215 valve:

Remove the 1/8” NPT hose barb fitting from the outlet pressure tap. Replace the outlet pressure boss plug and seal with a high quality thread sealer.

b. White-Rodgers 36G22 valve: Turn outlet pressure test screw in to seal pressure port (clockwise, 7 in-lb minimum).

13. Turn ON electrical power and gas supply to the system.

14. Close thermostat contacts to provide a call for heat.

15. Retest for leaks. If bubbles form, SHUT OFF GAS AND

REPAIR ALL LEAKS IMMEDIATELY!

M

ODELS USING

T

WO

S

TAGE

G

AS

V

ALVES

CAUTION

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

.

Only small variations in gas pressure should be made by adjusting 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.

28

S

TART

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UP

P

ROCEDURE AND

A

DJUSTMENT

3. Outlet pressure tap connections: a. Honeywell VR9205 valve: Remove the outlet pressure boss 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 boss) 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 boss

(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 boss.

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 boss 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-

Rodgers 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.

Natural

Propane

Manifold Gas Pressure

Gas

Range Nom inal

Low Stage 1.6 - 2.2" w .c.

1.9" w .c.

High Stage 3.2 - 3.8" w .c.

3.5" w .c.

Low Stage 5.7 - 6.3" w .c.

6.0" w .c.

High Stage 9.7 - 10.3" w .c. 10.0" w .c.

G

AS

I

NPUT

R

ATE

M

EASUREMENT

(N

ATURAL

G

AS

O

NLY

)

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.

3. Calculate the number of seconds per cubic foot (sec/ ft

3

) 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/ft 3

(Obtained from gas supplier)

Installation’s seconds per cubic foot: 34 sec/ ft 3

Conversion Factor (hours to seconds): 3600 sec/hr

Input = (Htg. value x 3600) ÷ seconds per cubic foot

Input = (1,000 BTU/ft

3

x 3600 sec/hr) ÷ 34 sec/ ft

3

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.

T

EMPERATURE

R

ISE

Air temperature rise is the temperature difference between supply and return air. The proper amount of temperature rise is usually obtained when the unit is operated at the rated input with the “as shipped” blower speed. If the correct amount of temperature rise is not obtained, it may be necessary to change the blower speed.

An incorrect temperature rise can cause condensing in or overheating of the heat exchanger. Determine and adjust the temperature rise as follows. The temperature rise must be within the range specified on the rating plate or Specification Sheet applicable to your model. (Please contact your distributor or

our website for the applicable Specification Sheet referred to in this manual.)

29

S

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P

ROCEDURE AND

A

DJUSTMENT

SUPPLY

AIR

RETURN

AIR

Temperature Rise Measurement

1. Operate furnace with burners firing approximately 15 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.

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 the following section for speed changing details.

C

IRCULATOR

B

LOWER

S

PEED

A

DJUSTMENT

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, HI HEAT and COOL (hot)) for *(M,D)H8 models and HEAT and

COOL for *(M,H,D)S8 models). If a heating speed and the cooling 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 Temperature

Rise section.

C

IRCULATOR

B

LOWER

F

AN

T

IMING

A

DJUSTMENT

NOTE: Items in this section refer to the air circulator blower

fan in the *(M,D)H8 models, 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 circulator 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.

150

SECOND

DELAY

100

SECOND

DELAY

WARNING

T

O

 

AVOID

 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ELECTRICAL

 

SHOCK

, 

TURN

 OFF 

POWER

 

TO

 

THE

 

FURNACE

 

BEFORE

 

CHANGING

 

SPEED

 

TAPS

.

Switch viewed in an upflow installation.

Adjustment Switch

This furnace is equipped with a PSC circulator blower motor.

This blower provides ease in adjusting blower speeds. Refer to the Blower Performance Data in the back of the manual for proper selection of heating and cooling speeds. The cooling blower speed is shipped set on HIGH. High heat ships on

MEDIUM and low heat is shipped on MEDIUM-LO. These blower speeds should be adjusted by the installer to match the installation requirements so as to provide the correct heating temperature rise and the 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 applicable to your model. (Please

contact your distributor or our website for the applicable

Specification Sheet referred to in this manual.)

S

ETTING

*MH8

F

URNACE

MODELS

O

ONLY

)

PERATING

M

ODE

(*DH8, *ME8,

AND

This furnace is designed to operate with either a single gas input rate or with two discrete gas input rates. The Mode

DIP switch is used to select the single gas input rate or two discrete 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.

30

S

TART

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UP

P

ROCEDURE AND

A

DJUSTMENT

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 operates at the low input rate for a pre-determined time period then steps to the high input rate.

Operation is as described under Sequence of Operation

(Integrated Ignition Control) – Mode DIP Switch is set to “2

STG” position.

A

UXILIARY

L

IMIT

C

ONTROL

Auto reset limits are located on or near the blower. To access this auxiliary limit, disconnect the electrical power and remove the blower door. The auxiliary limit control is designed to prevent furnace operation in case of main blower failure on horizontal installations. It may also open if the power supply is interrupted while the furnace is firing. The auxiliary limit control is suitable for both horizontal right and horizontal left installations. Regardless of airflow direction, it does not need to be relocated.

The time period is determined by the 2 nd

Stg Dly DIP switch.

Setting the 2 nd

Stg Dly DIP switch to 5 minutes fixes the delay period at 5 minutes. Setting the 2 nd

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.

OFF

ON

WARNING

T

O

 

AVOID

 

PERSONAL

 

INJURY

 

OR

 

DEATH

, 

DO

 

NOT

 

REMOVE

 

ANY

 

INTERNAL

 

COMPARTMENT

 

COVERS

 

OR

 

ATTEMPT

 

ANY

 

ADJUSTMENT

. 

E

LECTRICAL

 

COMPONENTS

 

ARE

 

CONTAINED

 

IN

 

BOTH

 

COMPARTMENTS

. 

C

ONTACT

 

A

 

QUALIFIED

 

SERVICE

 

AGENT

 

AT

 

ONCE

 

IF

 

AN

 

ABNORMAL

 

FLAME

 

APPEARANCE

 

SHOULD

 

DEVELOP

.

O

PERATIONAL

M

2

ND

STG DLY

2 STG

5 MIN

C

HECKS

WARNING

1 STG

AUTO

T

O AVOID PERSONAL INJURY OR DEATH, DO NOT REMOVE ANY INTERNAL

COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT.

E

LECTRICAL

COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS.

C

ONTACT A

QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE

SHOULD DEVELOP.

B

URNER

F

LAME

The burner flames should be inspected with the burner compartment door installed. 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 exchanger firing tubes.

Check the burner flames for:

1. Good adjustment

2. Stable, soft and blue

3. Not curling, floating, or lifting off.

Burner Flame

S

AFETY

C

IRCUIT

D

ESCRIPTION

G

ENERAL

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 diagnosis of abnormal function. These circuits are continuously monitored during furnace operation by the integrated control module.

I

NTEGRATED

C

ONTROL

M

ODULE

The integrated control module is an electronic device which controls all furnace operations. Responding to the thermostat, the module initiates and controls normal furnace operation, and monitors and addresses all safety circuits. If a potential safety concern is detected, the module will take the necessary precautions and provide diagnostic information through an LED.

P

RIMARY

L

IMIT

The primary limit control is located on the partition panel and monitors heat exchanger compartment temperatures. It is an automatic reset, temperature sensor. The limit guards against the overheating resulting from insufficient air passing over the heat exchanger.

A

UXILIARY

L

IMIT

The auxiliary limit control is located either on or near the circulator blower and monitors heat exchanger compartment temperatures. The control is an automatic reset, temperature sensor. It guards against overheating resulting from insufficient air passing over the heat exchanger.

31

O

PERATIONAL

C

HECKS

& S

AFETY

C

IRCUIT

D

ESCRIPTION

R

OLLOUT

L

IMITS

The rollout limit controls are mounted on the burner/manifold assembly and monitor the burner flame. They are manualreset, temperature sensors. This limit guards against burner flames not being properly drawn into the heat exchanger.

P

RESSURE

S

WITCHES

The pressure switches are normally-open, 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. These switches guard against insufficient airflow (combustion air and flue products) through the heat exchanger.

F

LAME

S

ENSOR

The flame sensor is a probe mounted to the burner/manifold assembly which uses the principle of flame rectification to determine the presence or absence of flame.

T

ROUBLESHOOTING

E

LECTROSTATIC

D

ISCHARGE

(ESD) P

RECAUTIONS

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 servicing to protect the integrated control module from damage. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid exposing the integrated control module to electrostatic discharge.

This procedure is applicable to both installed and uninstalled

(ungrounded) furnaces.

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

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

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.

D

IAGNOSTIC

C

HART

Refer to the troubleshooting chart in the Appendix for assistance in determining the source of unit operational problems.

The red diagnostic LED blinks to assist in troubleshooting the unit. The number of blinks refer to a specific code.

NOTE: To clear all alarm codes, depress the push button for 6 seconds.

F

AULT

R

ECALL

The ignition control is equipped with a momentary push button 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 thermostat 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 recent fault to the least recent fault.

R

ESETTING

F

ROM

L

OCKOUT

Furnace lockout results when a furnace is unable to achieve ignition after three attempts. It is characterized by a non-functioning furnace and a one flash diagnostic LED code from the red LED. 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 for 1 - 20 seconds then reset to previous setting.

NOTE: If the condition which originally caused the lockout still exists, the control will return to lockout. Refer to the Diagnostic

Chart for aid in determining the cause.

M

AINTENANCE

WARNING

T

O

 

AVOID

 

ELECTRICAL

 

SHOCK

, 

INJURY

 

OR

 

DEATH

, 

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

.

32

T

ROUBLESHOOTING

& M

AINTENANCE

A

NNUAL 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 components are in proper working order and that the heating system functions appropriately. Pay particular attention to the following items. Repair 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.

• Wiring. Check electrical connections for tightness and/ or corrosion. Check wires for damage.

• Filters.

F

ILTERS

WARNING

T

O

 

AVOID

 

PROPERTY

 

DAMAGE

, 

PERSONAL

 

INJURY

 

OR

 

DEATH

, 

DISCONNECT

 

ELECTRICAL

 

POWER

 

BEFORE

 

REMOVING

 

FILTERS

. N

EVER

 

OPERATE

 

FURNACE

 

WITHOUT

 

A

 

FILTER

 

INSTALLED

 

BECAUSE

 

DUST

 

AND

 

LINT

 

WILL

 

BUILD

 

UP

 

ON

 

INTERNAL

 

PARTS

 

RESULTING

 

IN

 

LOSS

 

OF

 

EFFICIENCY

, 

EQUIPMENT

 

DAMAGE

 

AND

 

POSSIBLE

 

FIRE

.

A return air filter is not supplied with this furnace; however, there must be a means of filtering all of the return air. The installer will supply filter(s) at the time of installation.

F

ILTER

M

AINTENANCE

Improper filter maintenance is the most common cause of inadequate heating or cooling performance. Filters should be cleaned (permanent) or replaced (disposable) every two months or as required. When replacing a filter, it must be replaced with a filter of the same type and size.

I

F

ILTER

R

EMOVAL

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 or instruction provided by the media or electronic air cleaner manufacturer to ensure proper unit performance.

To remove filters from an external filter rack in an upright upflow installation, follow the directions provided with external filter rack kit. For further details, see your distributor.

I

NDUCED

D

RAFT AND

C

IRCULATOR

B

LOWER

M

OTORS

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.

F

LAME

S

ENSOR

(Q

UALIFIED

S

ERVICER

O

NLY

)

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 cleaning, the flame sense signal should be 1 to 6 microamps at 115 volts.

GNITER

(Q

B

URNERS

UALIFIED

S

ERVICER

O

NLY

)

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.

WARNING

HIGH VOLTAGE!

T

O

 

PREVENT

 

PROPERTY

 

DAMAGE

, 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ELECTRICAL

 

SHOCK

, 

DISCONNECT

 

ELECTRICAL

 

POWER

 

TO

 

THE

 

FURNACE

 BEFORE 

REMOVING

 

THE

 

FILTER

 

OR

 

PERFORMING

 

ANY

 

OTHER

 

MAINTENANCE

.

WARNING

T

O

 

PREVENT

 

PERSONAL

 

INJURY

 

OR

 

DEATH

, 

DO

 

NOT

 

REMOVE

 

ANY

 

INTERNAL

 

COMPARTMENT

 

COVERS

 

OR

 

ATTEMPT

 

ANY

 

ADJUSTMENT

. 

E

LECTRICAL

 

COMPONENTS

 

ARE

 

CONTAINED

 

IN

 

BOTH

 

COMPARTMENTS

. 

C

ONTACT

 

A

 

QUALIFIED

 

SERVICE

 

AGENT

 

AT

 

ONCE

 

IF

 

AN

 

ABNORMAL

 

FLAME

 

APPEARANCE

 

SHOULD

 

DEVELOP

.

Become familiar with filter location and procedures for removal, cleaning and replacing them. If help is needed, contact the installer of the furnace or a qualified servicer.

Periodically during the heating season, make a visual check of the burner flames. Turn the furnace on at the thermostat. Wait a few minutes, since any dislodged dust will alter the normal flame appearance. Flames should be stable, quiet, soft and blue with slightly orange tips. They should not be yellow. They should extend directly outward from the burner ports without curling downward, floating or lifting off the ports.

33

T

ROUBLESHOOTING

& M

AINTENANCE

C

LEANING

(Q

UALIFIED

S

ERVICER

O

NLY

)

1. Shut off electric power and gas supply to the furnace.

2. Disconnect the rollout limit wires, flame sensor wire, and disconnect the igniter plug.

CAUTION

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

.

3. Remove four (4) screws securing the burner box top.

CAUTION

T

HE

 

IGNITER

 

IS

 

FRAGILE

 

AND

 

CAN

 

BE

 

EASILY

 

DAMAGED

. U

SE

 

EXTREME

 

CAUTION

 

WHEN

 

REMOVING

 

THE

 

BURNER

 

BOX

 

TOP

.

4. Remove the screws securing the burners to the burner bracket. Remove the burners.

5. Use bottle brush to clean burner insert and inside of burner.

6. Replace burner (opposite of removal). Ensure burners are fully seated on burner bracket and are properly aligned. Replace burner box top. Reconnect wiring.

7. Turn on electric power and gas supply to the furnace.

8. Check furnace for proper operation. Refer to “Operational

Checks” section to verify burner flame characteristics.

B

EFORE

L

EAVING AN

I

NSTALLATION

•

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.

R

EPAIR AND

R

EPLACEMENT

P

ARTS

•

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

Natural Gas Orifice

Propane Gas Orifice

Burner

Hot Surface Igniter

Flame Sensor

Gas Manifold

Ignition Control

Blower/Collector Box Gasket

Primary Limit Switch

Rollout Limit Switch

Auxiliary Limit Switch

Heat Exchanger

Door Switch

Transformer

Blower Wheel

Blower Mounting Bracket Blower Housing

Pressure Switch Blower Cutoff

Pressure Switch Hose

Induced Draft Blower

Collector Box

Blower Motor

Motor Mount Bracket

Capacitor

34

C

OMPONENT

I

DENTIFICATION

2 Pressure Switch

3

Flue Pipe Connection

4

(Chimney Transition Top Shipped Loose)

5

Gas Line

Entrance

7

Rollout Limit

6

Gas Valve

8 Junction Box

9

Wiring Harness

Grommet

Gas Manifold

Inshot Burner

1

Tubular Heat Exchanger

Gas Line Entrance

(Alternate)

躀

Transformer

Blower Door

Interlock Switch

Circulator Blower

Integrated Control Module

1 Tubular Heat Exchanger

2 Pressure Switch

3 Flue Pipe Connection

4 Induced Draft Blower

5 Gas Line Entrance

6 Gas Valve

7 Rollout Limit

8 Junction Box

9 Wiring Harness Grommet

10 Gas Manifold

11 Inshot Burner

12 Transformer

13 Integrated Control Module

14 Blower Door Interlock Switch

15 Circulator Blower

16 Gas Line Entrance (Alternate)

35

C

OMPONENT

I

DENTIFICATION

Inshot Burner

7 Rollout Limit

Gas Manifold

4 Induced Draft Blower

Gas Line Entrance

(Alternate)

8

Junction Box

9

Wiring Harness

Grommet

2

Pressure Switch

Transformer

1

Tubular Heat Exchanger

6

Gas Valve

5

Gas Line

Entrance

3 Flue Pipe Connection

(Chimney Transition Top Shipped Loose)

Integrated Control Module

Blower Door

Interlock Switch

Circulator Blower

1 Tubular Heat Exchanger

2 Pressure Switch

3 Flue Pipe Connection

4 Induced Draft Blower

5 Gas Line Entrance

6 Gas Valve

7 Rollout Limit

8 Junction Box

9 Wiring Harness Grommet

10 Gas Manifold

11 Inshot Burner

12 Transformer

13 Integrated Control Module

14 Blower Door Interlock Switch

15 Circulator Blower

16 Gas Line Entrance (Alternate)

36

T

ROUBLESHOOTING

C

HART

Symptoms of

Abnormal Operation

Associated

LED Code

2

• Furnace fails to operate.

• Integrated control module diagnostic LED provides

no signal.

• Furnace fails to operate.

NONE

Fault

Description(s)

Possible

Causes

• No 115 volt power to furnace, or no 24 volt power to integrated control module.

• Manual disconnect switch

OFF, door switch open, or

24 volt wires improperly connected or loose.

• Blown fuse or circuit breaker.

• Blown fuse or circuit breaker.

• Integrated control module has an internal fault.

• Integrated control module has an internal fault.

Corrective

Action

Cautions

& Notes

• 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.

• Turn power OFF prior to repair.

• Read precautions in “Electrostatic

Discharge” section of manual.

• Furnace fails to operate.

• Integrated control module diagnostic LED is flashing ONE (1) flash.

1

1 FLASH

• Furnace lockout due to an excessive number of ignition attempts. (3 total)

1

• Auxiliary Limit Open

• Failure to establish flame.

Cause may be no gas to burners, bad igniter or igniter alignment, improper orifices, or coated/ oxidized or improperly connected flame sensor.

• Loss of flame after establishment. Cause may be interrupted gas supply, lazy burner flames

(improper gas pressure or restriction in flue or improper induced draft blower performance.

• Insufficient conditioned air over the heat exchanger.

Blocked filters, restrictive ductwork, improper circulator blower speed, or failed circulator blower.

• Locate and correct gas interruption.

• 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 performance.

• Check circulator blower speed and performance.

Correct speed or replace blower if necessary.

• Turn power OFF prior to repair.

• Igniter is fragile, handle with care.

• Clean flame sensor with steel wool.

• See “Combustion and Ventilation Air

Requirements” and

“Category I Venting

(Vertical Venting)” section for details.

• See Product Data

Bulletin for allowable rise range and proper circulator speed.

• Furnace fails to operate.

• Integrated control module diagnostic LED is flashing TWO (2) flashes.

2

2 FLASHES

• Pressure switch circuit is closed.

• Induced draft blower

is not operating.

• Induced draft blower pressure switch contacts sticking.

• Shorts in pressure switch circuit.

• Replace induced draft blower pressure switch.

• Repair short.

• Turn power OFF prior to repair.

• Replace pressure switch with proper replacement part.

• Induced draft blower runs continuously with no further furnace operation.

3

• Integrated control module diagnostic LED is flashing THREE (3) flashes.

3 FLASHES

• Pressure switch circuit not closed.

• Induced draft blower

is operating.

• If installed, manual reset limit switch is open on Masonry

Vent Kit (MVK).

• Pressure switch hose blocked, pinched or connected improperly.

• Blocked flue or weak induced draft blower.

• Incorrect pressure switch setpoint or malfunctioning switch contacts.

• Loose or improperly connected wiring.

• Blockage in flue or chimney.

• Inspect pressure switch hose. Repair, if necessary,

• Inspect flue for blockage, proper length, elbows, and termination.

• Correct pressure switch setpoint or contact motion.

• Tighten or correct wiring connection.

• Inspect masonry chimney and flue; remove blockage.

• Turn power OFF prior to repair.

• See “Combustion and Ventilation Air

Requirements” and

“Category I Venting

(Vertical Venting)” section for details.

• Replace pressure switch with proper replacement part.

• Replace masonry vent kit limit switch with correct replacement part.

1 Integrated control module will automatically attempt to reset from lockout after one hour.

2

LED Flash code will cease if power to the control module is interrupted through the disconnect or door switch.

37

T

ROUBLESHOOTING

C

HART

Symptoms of

Abnormal Operation

• Circulator blower runs continuously. No furnace operation.

• Integrated control module diagnostic LED is flashing

FOUR (4) flashes.

Associated

2

LED Code 2

4

4 FLASHES

Fault

Description(s)

• Primary limit circuit is open.

• Induced draft blower and circulator blower runs continuously. No furnace operation.

• Integrated control module diagnostic LED is flashing

FIVE (5) flashes.

• Furnace fails to operate.

• Integrated control module diagnostic LED is flashing

SIX (6) flashes.

• No furnace operation.

5

5 FLASHES

6

6 FLASHES

• Flame sensed with no call for heat.

• Rollout limit open.

• Integrated control module fuse is blown.

Possible Causes

• 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.

• Short to ground in flame sense circuit.

Corrective Action

• 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.

• Correct short at flame sensor or in flame sensor wiring.

Cautions

& Notes

• Turn power OFF prior to repair.

• Replace primary switch with proper replacement part.

• Replace blower with correct replacement part.

• Turn power OFF prior to repair.

• 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.

• 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).

• See “Vent/Flue Pipe” section for piping details.

• Replace induced draft blower with proper replacement part.

• Replace integrated control module fuse with 3A automotive fuse.

• Read precautions in

“Electrostatic

Discharge” section of manual.

• Replace rollout limit with correct replacement part.

• Normal furnace operation.

• Integrated control module diagnostic LED is flashing SEVEN (7) flashes.

7

7 FLASHES

• 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.

2

LED Flash code will cease if power to the control module is interrupted through the disconnect or door switch.

38

T

ROUBLESHOOTING

C

HART

Symptoms of

Abnormal Operation

• Furnace not operating.

• Integrated control module diagnostic LED is flashing EIGHT (8) flashes.

Associated

LED Code

2

Fault

Description(s)

• Problem with igniter circuit.

8 FLASHES

• 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.

Possible Causes

• Improperly connected igniter.

• Bad igniter.

• Poor unit ground.

• Poor burner ground.

• Faulty integrated control module.

• 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.

Corrective Action

Cautions

& Notes

• 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.

• 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.

• LED is steady on

STEADY

• Normal operation.

2

LED Flash code will cease if power to the control module is interrupted through the disconnect or door switch.

39

B

LOWER

P

ERFORMANCE

D

ATA

*M(H/S)8

(CFM & Temperature Rise vs. External Static Pressure)

Model

Heating Speed

As Shipped

(MEDIUM)

Motor

Speed

Tons AC at 0.5"

0.1

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.2

0.3

0.4

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

*M(H/S)80403A*** MED 2.5

1521

1160

----

26

1466

1160

----

26

1414

1132

----

26

1373

1121

----

26

1298

1082

----

27

1243 1164 1075

1042 997 925

MED-LO

LOW

HIGH

2.0

1.5

3.0

961 31 955 31 948 31 932 32 913 33 882 821 803

781 38 785 38 781 38 773 38 761 32 745 716 668

1422 31 1352 33 1307 34 1197 37 1157 38 1092 1075 983

*M(H/S)80603A***

(MEDIUM)

MED

MED-LO

LOW

2.5

2.0

1.5

HIGH 4.0

*M(H/S)80604B*** MED 3.5

(MEDIUM) MED-LO

LOW

3.0

2.5

1098

919

758

2134

1668

1419

1134

40

48

----

21

27

31

39

1081

913

741

2100

1663

1426

1145

41

49

----

21

27

31

39

1051

892

741

2042

1656

1426

1166

42

50

----

22

27

31

38

1039

847

733

1975

1645

1432

1171

43

----

----

23

27

31

38

1021

829

699

1883

1616

1419

1160

44

----

----

24

28

31

38

983

818

677

924

792

649

868

728

626

1786 1700 1601

1549 1492 1391

1378 1328 1261

1144 1111 1071

*M(H/S)80803B***

(MEDIUM)

*M(H/S)80804B*** MED 3.5

(MEDIUM) MED-LO 3.0

LOW

HIGH

2.5

5.0

*M(H/S)80805C***

(MEDIUM)

*M(H/S)81005C*** MED 4.0

(MEDIUM) MED-LO 3.5

LOW

HIGH

3.0

5.0

*M(H/S)81205D***

(MEDIUM)

HIGH 3.0

MED 2.5

MED-LO

LOW

HIGH

MED 4.0

MED-LO

LOW

HIGH

2.0

1.5

4.0

3.5

3.0

5.0

MED 4.0

MED-LO

LOW

HIGH

3.5

3.0

5.0

*M(H/S)81405D*** MED 4.0

(MEDIUM) MED-LO 3.5

LOW 3.0

1607 37 1572 38 1547 39 1498 40 1448 41 1390 1302 1222

1159 51 1156 51 1145 52 1127 53 1108 53 1075 1033 957

938 63 916 65 916 65 900 ---889 ---865 829 785

785 ---766 ---743 ---730 ---709 ---683 666 604

2051 ---1983 ---1895 ---1812 ---1725 ---1627 1530 1439

1736

1693

1200

2290

1852 ---1820 ---1777 ---1719 --1641 36 1567 1469 1382

1615 37 1592 37 1556 38 1516 39 1470 40 1405 1346 1235

1290 46 1285 46 1265 47 1235 48 1214 49 1174 1044 904

2323 ---2225 ---2120 35 2040 36 1974 38 1801 1688 1577

1858

1596

1291

2469

----

35

49

----

40

46

57

----

1708

1668

1185

2229

1847

1587

1272

2389

35

36

50

----

40

47

58

----

1652

1459

1180

2155

1799

1571

1261

2300

36

41

50

----

41

47

59

----

1611

1429

1173

2047

1744

1552

1257

2223

37

41

51

----

42

48

59

40

1540

1389

1158

1960

1674

1493

1205

2131

38

43

51

----

44

50

61

42

1475 1394 1307

1339 1274 1204

1125 1125 1080

1837 1712 1584

1577 1493 1399

1397 1326 1217

1168 1118 1060

2027 1902 1786

1575 56 1558 57 1545 58 1513 59 1500 59 1419 1354 1271

1402 63 1380 64 1343 66 1319 67 1296 69 1245 1183 1106

1200 ---1186 ---1161 ---1127 ---1082 ---1042 995 926

2469 42 2389 43 2300 45 2223 47 2131 49 2027 1902 1786

1575 66 1558 67 1545 67 1513 69 1500 69 1419 1354 1271

1402 ---1380 ---1343 ---1319 ---1296 ---1245 1183 1106

1200 ---1186 ---1161 ---1127 ---1082 ---1042 995 926

40

B

LOWER

P

ERFORMANCE

D

ATA

*(D/H)S8

Model

Heating Speed

As Shipped

GDS80403A***

(MEDIUM)

GDS80603A***

(MEDIUM)

GDS80804B***

(MEDIUM)

GDS81005C***

(MEDIUM)

(CFM & Temperature Rise vs. External Static Pressure)

Motor

Speed

Tons AC at 0.5" 0.1

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.2

0.3

0.4

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

MED 2.5

1353 ---1290 ---1246 ---1199 25 1149 26 1116 1116 1099

1183 25 1113 27 1098 27 1052 28 1039 29 1006 1012 969

MED-LO

LOW

HIGH

MED

MED-LO

LOW

HIGH 4.0

MED 3.5

MED-LO

LOW

3.0

2.5

HIGH 5.0

MED 4.0

MED-LO

LOW

3.5

3.0

2.0

1.5

3.0

2.5

2.0

1.5

980 30 946 31 920 32 900 33 896 33 885 855 804

778 38 762 39 738 40 746 40 738 40 717 696 678

1290 34 1236 36 1194 37 1166 38 1176 38 1166 1108 1029

1139 39 1090 41 1035 43 1063 42 1063 42 1020 962 895

962 46 927 48 925 48 941 47 909 49 877 834 779

787 56 776 57 763 58 744 60 723 ---690 641 581

2128 ---2063 ---2001 ---1927 ---1824 ---1726 1628 1529

1840 ---1788 ---1745 ---1689 35 1625 36 1550 1470 1364

1602 37 1558 38 1543 38 1493 40 1455 41 1402 1328 1239

1277 46 1252 47 1244 48 1229 48 1214 49 1179 1141 1079

2405 ---2361 ---2250 ---2161 ----2037 36 1937 1808 1689

1880 39 1838 40 1794 41 1734 43 1677 44 1568 1510 1401

1659 45 1630 45 1587 47 1537 48 1492 50 1445 1368 1287

1472 50 1454 51 1404 53 1366 54 1326 56 1300 1228 1139

Model

Heating Speed

As Shipped

GHS80403A***

(MEDIUM)

GHS80604B***

(MEDIUM)

GHS80805C***

(MEDIUM)

(CFM & Temperature Rise vs. External Static Pressure)

Motor

Speed

HIGH

Tons AC at 0.5"

ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE

3.0

MED 2.5

0.1

0.2

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.3

0.4

0.5

0.6

0.7

0.8

1739 ---1656 ---1601 ---1551 ---1513 20 1460 22.8 1413 23.6 1353 24.6

1422 21 1399 21 1378 22 1350 22 1305 23 1275 26.1 1220 27.3 1178 28.3

MED-LO

LOW

HIGH

MED

MED-LO

LOW

HIGH

3.0

5.0

MED 4.0

MED-LO

LOW

3.5

3.0

2.0

1.5

4.0

3.5

3.0

1207 25 1213 24 1197 25 1169 25 1158 26 1131 29.5 1103 30.2 1068 31.2

991 30 980 30 958 31 950 31 937 32 924 36.1

910 36.6

874 38.1

2097 21 2068 21 2012 22 1939 23 1869 24 1795 28.9 1718 30.2 1631 31.8

1596 28 1566 28 1534 29 1492 30 1445 31 1401 37 1354 38.3 1288 40.3

1380 32 1356 33 1328 33 1303 34 1274 35 1239 41.8 1192 43.5 1127 46

1239 36 1191 37 1165 37 1133 39 1104 40 1082 47.9 1040 49.9

996 52.1

2382 ---2315 ---2234 ---2158 ---2078 ---1971 33.8 1866 35.7 1762 37.8

1622 37 1603 37 1583 37 1556 38 1516 39 1482 45 1422 46.9 1359 49.1

1436 41 1391 43 1387 41 1356 44 1325 45 1279 52.1 1239 53.8 1180 56.5

1240 48 1214 49 1191 50 1157 51 1120 53 1083 61.6 1052 63.4 1025 65

41

B

LOWER

P

ERFORMANCE

D

ATA

GME8

(CFM & Temperature Rise vs. External Static Pressure)

Model

Heating Speed

As Shipped

GME80603B***

GME80805C***

GME81005C***

Motor Speed

T1 - YELLOW

T2 - RED

Tons AC at 0.5" 0.1

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.2

0.3

0.4

0.5

0.6

0.7

0.8

ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

1.5

875 ---793 ---736 ---674 ---592 ---556 509 460

2.0

1032 43 965 46 914 49 861 ---810 ---756 712 659

T3 - ORANGE

T4 - BLUE

T5 - BLACK

T1 - YELLOW

T2 - RED

T3 - ORANGE

T4 - BLUE

T5 - BLACK

T1 - YELLOW

T2 - RED

T3 - ORANGE

T4 - BLUE

T5 - BLACK

3.0

3.5

4.0

5.0

2.5

3.0

3.5

2.5

3.0

3.5

4.0

4.0

5.0

1217 37 1153 39 1098 40 1051 42 1009 44 964 918 877

1365 33 1313 34 1268 35 1221 36 1172 38 1129 1086 1054

1549 29 1505 30 1460 30 1420 31 1378 32 1350 1305 1268

1268 47 1198 49 1151 51 1092 54 1041 57 988 932 883

1362 44 1305 45 1261 47 1212 49 1170 51 1121 1074 1021

1576 38 1519 39 1473 40 1426 42 1398 42 1341 1290 1252

1755 ---1711 35 1657 36 1627 36 1579 38 1548 1502 1463

2183 ---2128 ---2094 ---2060 ---2014 ---1992 1944 1847

1466 51 1415 52 1357 55 1306 57 1248 59 1202 1144 1088

1642 45 1596 46 1552 48 1499 49 1449 51 1388 1352 1306

1750 42 1750 42 1707 43 1667 44 1610 46 1574 1531 1486

1870 40 1805 41 1782 42 1737 43 1701 44 1656 1606 1571

2297 ---2297 ---2224 ---2106 35 2014 37 1896 1813 1669

Notes:

• CFM in chart is without filter(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.

• All furnaces ship as high-speed cooling and medium-speed heating. Installer must adjust blower cooling and heating speed as needed.

• For most jobs, about 375 - 400 CFM per ton when cooling is desirable.

• INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

• This chart is for information only. For satisfactory operation, external static pressure should not exceed value shown on the rating plate.

• The above chart is for U.S. furnaces installed at 0-2000 feet. At higher altitudes, a properly derated unit will have approximately the same

temperature rise at a particular CFM, while ESP at the CFM will be lower.

• Factory Motor Speed Setting: T1 = 1st Stage Ht, T2 = 2nd Stage Ht, T5 = Cooling.

• Temperature rise data is based on 2nd-stage heat. First-stage heat is 75% of rise indicated above.

42

*(M, D, H)S8 W

IRING

D

IAGRAM

BOX

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

43

GME8 W

IRING

D

IAGRAM

WARNING:DISCONNECT POWER BEFORE

SERVICING.WIRING TO UNIT MUST BE

PROPERLY POLARIZED AND GROUNDED.

24 VAC

HUMIDIFIER

C

4

1

10

7

11

8

12

9

5

2

6

3

G R W Y

1 STG

150 SEC

2 STG

100 SEC

2N

D S

TG

DL

Y

HT O

FF DL

Y

WH

BL

FUSE

SEE NOTE 6

BR

INTEGRATED

CONTROL MODULE

FS

RD

BL

2

1

XFMR-H LINE-H EAC-H

AUXILIARY

LIMITS

BR

C

G

Y

W

R

HUMIDIFIER

INTEGRATED

CONTROL MODULE

XFMR (6)

GND (8)

MVC (9)

MVH (12)

MVL (2)

GND

TO

MICRO

PS (10)

PSO (4)

HLI (7)

AUXILIARY

LIMIT CONTROLS

C

C2

HI

GAS

VALVE

M1

ID BLOWER

PRESSURE

SWITCH

NO

HLO (1)

XFMR (3)

RO2 (11)

RO1 (5)

MANUAL RESET ROLLOUT

LIMIT CONTROL(S)

(SINGLE CONTROL ON SOME MODELS)

24 VAC

40 VA

TRANSFORMER

AUTO RESET

PRIMARY

LIMIT

CONTROL

XFMR-H

115 VAC

FLAME SENSOR

XFMR-N

FP

HOT SURFACE

IGNITER

IGN

IGN-N

PARK

BK 24V

115V

XFMR

BK IND

ID

BLWR

HE

AT-

H

COOL-H

CIRCULATOR

BLWR

HI

HE

AT-

H

IND-N

CIR-N

WH

GR

BK

15 PIN PLUG

ON SOME MODELS

BLOWER COMPARTMENT

EAC-H

LINE-H

ELECTRONIC

AIR CLEANER

EAC-N

LINE-N

DOOR SWITCH

SWITCH LOCATED IN BLOWER

COMPARTMENT ON SOME MODELS

BURNER COMPARTMENT

24 VAC

HUMIDIFIER

DOOR

SWITCH

JUNCTION BOX

NO C

RD

RD

PRIMARY LIMIT

YL

YL

RD

YL

PRESSURE

SWITCH

WH

YL

WARNING:

DISCONNECT POWER

BEFORE SERVICING.

WIRING TO UNIT

MUST BE

PROPERLY

POLARIZED

AND GROUNDED.

DISCONNECT

BK L GND N

BR

BL

WH

OVERCURRENT PROTECTION DEVICE

C

3

HI

2

BK

HOT

SURFACE

IGNITER

PM

1

2 STAGE

GAS VALVE

(HONEY WELL)

WH

JUNCTION

BOX

LINE-N

GND

LINE H

PU

PU PU

FLAME

SENSOR

ROLLOUT LIMITS

(SINGLE CONTROL ON SOME MODELS)

0

STEADY ON = NORMAL OPERATION

4

5

2

3

6

1

7

8

C

OFF = CONTROL FAILURE

1 FLASH =

SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)

2 FLASHES = PRESSURE SWITCH STUCK CLOSED

3 FLASHES = PRESSURE SWITCH STUCK OPEN

4 FLASHES = OPEN HIGH LIMIT

5 FLASHES = FLAME SENSE WITHOUT GAS VALVE

6 FLASHES =

OPEN ROLLOUT OR OPEN FUSE

7 FLASHES = LOW FLAME SIGNAL

8 FLASHES = CHECK IGNITER OR IMPROPER GROUND

RAPID FLASHES = REVERSED 115 VAC POLARITY/VERIFY GND

INDUCED DRAFT

BLOWER

TO 115 VAC/ 1/60HZ

POWER SUPPLY WITH

OVERCURRENT PROTECTION

DEVICE

LOW VOLTAGE (24V)

LOW VOLTAGE FIELD

HI VOLTAGE (115V)

HI VOLTAGE FIELD

JUNCTION

TERMINAL

INTERNAL TO

INTEGRATED CONTROL

PLUG CONNECTION

EQUIPMENT GND

FIELD GND

FIELD SPLICE

SWITCH (TEMP.)

IGNITER

SWITCH (PRESS.)

OVERCURRENT

PROT. DEVICE

COLOR CODES:

YL YELLOW

OR ORANGE

PU PURPLE

GR GREEN

BK BLACK

PK PINK

BR BROWN

WH WHITE

BL BLUE

GY GRAY

RD RED

NOTES:

1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.

2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.

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 °C. USE COPPER CONDUCTORS ONLY.

4. BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION REQUIREMENTS SO AS TO

PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR

FLOW CHART)

5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.

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).

0140F00658 REV. A

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

44

*(M,D)H8 W

IRING

D

IAGRAM

WARNING:DISCONNECT POWER BEFORE

SERVICING.WIRING TO UNIT MUST BE

PROPERLY POLARIZED AND GROUNDED.

24 VAC

HUMIDIFIER

10

7

4

1

8

5

2

11 12

9

6

3

C G R W Y

AUTO

1 STG

150 SEC

2N

DS

TG

DLY

5 MIN

2 STG

100 SEC HTO

FFD

LY

WH

BL

FUSE

SEE NOTE 6

BR

INTEGRATED

CONTROL MODULE

RD

BL

FS

2

1

XFMR-H LINE-H EAC-H

AUXILIARY

LIMITS

BR

C

G

Y

W

R

HUMIDIFIER INTEGRATED

CONTROL MODULE

XFMR (6)

GND (8)

MVC (9)

MVH (12)

MVL (2)

GND

TO

MICRO

PS (10)

PSO (4)

HLI (7)

AUXILIARY

LIMIT CONTROLS

C

C2

HI

GAS

VALVE

M1

ID BLOWER

PRESSURE

SWITCH

NO

HLO (1)

RO2 (11)

AUTO RESET

PRIMARY

LIMIT

CONTROL

XFMR (3)

RO1 (5)

MANUAL RESET ROLLOUT

LIMIT CONTROL(S)

(SINGLE CONTROL ON SOME MODELS)

24 VAC

40 VA

TRANSFORMER

XFMR-H 115 VAC

FLAME SENSOR

XFMR-N

FP

HOT SURFACE

IGNITER

IGN

IGN-N

PARK

BK

IND

ID

BLWR

IND-N

HE

BK 24V

115V

XFMR

COOL-H

CIRCULATOR

BLWR

HI

HE

AT-

H

CIR-N

WH

GR

BK

15 PIN PLUG

ON SOME MODELS

BLOWER COMPARTMENT

EAC-H

LINE-H

ELECTRONIC

AIR CLEANER

EAC-N

LINE-N

JUNCTION BOX

DOOR SWITCH

SWITCH LOCATED IN BLOWER

COMPARTMENT ON SOME MODELS

BURNER COMPARTMENT

24 VAC

HUMIDIFIER

NO

DOOR

SWITCH

C

RD

RD

YL

PRIMARY LIMIT

YL

RD

YL

PRESSURE

SWITCH

WH

YL

WARNING:

DISCONNECT POWER

BEFORE SERVICING.

WIRING TO UNIT

MUST BE

PROPERLY

POLARIZED

AND GROUNDED.

DISCONNECT

BK

L GND N

BR

BL

WH

OVERCURRENT PROTECTION DEVICE

C

3

HI

2

BK

HOT

SURFACE

IGNITER

PM

1

2 STAGE

GAS VALVE

(HONEY WELL)

WH

JUNCTION

BOX

LINE-N

GND

LINE H

PU

INDUCED DRAFT

BLOWER

PU PU

FLAME

SENSOR

TO 115 VAC/ 1/60HZ

POWER SUPPLY WITH

OVERCURRENT PROTECTION

DEVICE

ROLLOUT LIMITS

(SINGLE CONTROL ON SOME MODELS)

0

1

2

3

4

STEADY ON = NORMAL OPERATION

OFF = CONTROL FAILURE

1 FLASH =

SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)

2 FLASHES = PRESSURE SWITCH STUCK CLOSED

3 FLASHES = PRESSURE SWITCH STUCK OPEN

4 FLASHES = OPEN HIGH LIMIT

5

6

7

8

C

5 FLASHES = FLAME SENSE WITHOUT GAS VALVE

6 FLASHES = OPEN ROLLOUT OR OPEN FUSE

7 FLASHES = LOW FLAME SIGNAL

8 FLASHES = CHECK IGNITER OR IMPROPER GROUND

RAPID FLASHES = REVERSED 115 VAC POLARITY/VERIFY GND

COLOR CODES:

YL YELLOW

OR ORANGE

PU PURPLE

GR GREEN

BK BLACK

PK PINK

BR BROWN

WH WHITE

BL BLUE

GY GRAY

RD RED

0140F00662 REV. A

LOW VOLTAGE (24V)

LOW VOLTAGE FIELD

HI VOLTAGE (115V)

HI VOLTAGE FIELD

JUNCTION

TERMINAL

INTERNAL TO

INTEGRATED CONTROL

PLUG CONNECTION

EQUIPMENT GND

FIELD GND

FIELD SPLICE

SWITCH (TEMP.)

IGNITER

SWITCH (PRESS.)

OVERCURRENT

PROT. DEVICE

NOTES:

1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.

2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.

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 °C. USE COPPER CONDUCTORS ONLY.

4. BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION

REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE

CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR FLOW CHART)

5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.

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).

45

THIS PAGE LEFT INTENTIONALLY BLANK

46

THIS PAGE LEFT INTENTIONALLY BLANK

47

Goodman Manufacturing Company, L.P.

5151 San Felipe, Suite 500, Houston, TX 77056

www.goodmanmfg.com

©

2009-2010 Goodman Manufacturing Company, L.P.

48