GOODMAN GDH80403A*A Series Service manual

TECHNICAL MANU

AL

GDH8 33-3/8" 80% Gas Furnace

80% AFUE, 2-Stage (Convertible),

Multi-Speed, Dedicated Downflow

•

Refer to Service Manual RS6610004 for installation, operation, and troubleshooting information.

•

All safety information must be followed as provided in the Service Manual.

•

Refer to the appropriate Parts Catalog for part number information.

•

Model numbers listed on page 3.

C

®

US

This manual is to be used by qualified, professionally trained HVAC technicians only.

Goodman does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.

Copy right © 2011, 2013 Goodman Manufacturing Comp any, L.P.

RT6621022r2

March 2013

PRODUCT IDENTIFICATION

The model and manufacturing number are used for positive identification of component parts used in manufacturing.

Please use these numbers when requesting service or parts information.

G D H 8 060 3 A X A A

BRAND:

G: Goodman

Brand

®

FURNACE

TYPE

H: Two-Stage/

Multi-speed

AIRFLOW DIRECTION

D: Dedicated Downflow

AFUE:

8: 80%

A* Revisions

NOMINAL INPUT:

040: 45,000 Btuh

060: 70,000 Btuh

080: 90,000 Btuh

100: 115,000 Btuh

B* Revisions

NOMINAL INPUT:

040: 40,000 Btuh

060: 60,000 Btuh

080: 80,000 Btuh

100: 100,000 Btuh

MAJOR

REVISION:

AIRFLOW

CAPABILITY:

3: 1200

4: 1600

5: 2000

ADDITIONAL

FEATURES:

N: Natural Gas

X: Low NOx

CABINET WIDTH:

A: 14"

B: 17 1/2"

C: 21"

MINOR

REVISION:

HIGH VOLTAGE!

Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

2

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

Installation and repair of this unit should be performed ONLY by individuals meeting the requirements of an "entry level technician", at a minimum, as specified by the Air-Conditioning, Heating, and Refrigeration Institute (AHRI). Attempting to install or repair this unit without such background may result in product damage, personal injury or death.

PRODUCT IDENTIFICATION

The model and manufacturing number are used for positive identification of component parts used in manufacturing.

Please use these numbers when requesting service or parts information.

GDH80403A*A*

GDH80603A*A*

GDH80804B*A*

GDH81005C*A*

GDH80403A*B*

GDH80603A*B*

GDH80804B*B*

GDH81005C*B*

*Models are available in Natural Gas and low NOx.

The United States Environmental Protection Agency (“EPA”) has issued various regulations regarding the introduction and disposal of refrigerants introduced into this unit. Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines.

These regulations may vary by jurisdiction. Should questions arise, contact your local EPA office.

Do not connect or use any device that is not design certified by Goodman for use with this unit. Serious property damage, personal injury, reduced unit performance and/or hazardous conditions may result from the use of such non-approved devices.

damage, personal injury, or death, do not store combustible materials or use gasoline or other flammable liquids or vapors in the vicinity of this appliance.

To prevent the risk of property

3

4

PRODUCT DESIGN

General Operation

The GDH8 furnaces are equipped with an electronic ignition device used to light the burners and an induced draft blower to exhaust combustion products.

An interlock switch prevents furnace operation if the inner blower door is not in place. Keep the blower access door in place except for inspection and maintenance. (See illustra-

tion on page 5.)

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 Troubleshooting Chart for further explanation of the LED codes and Abnormal Operation - Integrated Ignition Control section in the Service Instructions for an explanation of the possible problem.

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.

*Obtain from: American National Standards Institute 1430

Broadway New York, NY 10018

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

Accessibility Clearances (Minimum)

Unobstructed front clearance of 24" for servicing is recommended.

MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS - INCHES

Vent

Sides Rear Front* Top

1 0 3

SW

6

B

1 1

* 24" clearance for serviceability recommended.

** Single Wall Vent (SW) to be used only as a connector.

Refer to the venting tables outlined in the Installation Manual for

additional venting requirements.

Note: In all cases accessibility clearance shall take precedence over clearances from the enclosure where accessibility clearances are greater. All dimensions are given in inches.

Location Considerations

• The furnace should be as centralized as is practical with respect to the air distribution system.

• Do not install the furnace directly on carpeting, tile, or combustible material other than wood flooring.

• When installed in a residential garage, the furnace must be positioned so the burners and ignition source are located not less than 18 inches (457 mm) above the floor and protected from physical damage by vehicles.

Notes:

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.

High Altitude Derate

IMPORTANT NOTE: The furnace as shipped requires no change to run between 0 - 4500 feet. Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure below 4500 feet. This can cause poor combustion and equipment failure.

High altitude installations above 4500 feet 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 4500 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.

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

PRODUCT DIMENSIONS

GDH8

A

B

28”

High Voltage

Electrical

Low Voltage

Electrical

Gas Inlet

33-3/8”

MODEL

GDH80403A***

GDH80603A***

GDH80804B***

GDH81005C***

A

14

17 1/2

21

B

NON-COMBUSTIBLE

FLOOR BASE

SBT14 12 1/2

16 SBT17

19 1/2 SBT21

All dimensions are in inches.

5

6

PRODUCT DESIGN

MODEL

GDH80403A*A*

PRESSU RE SWITCH

PART

NO.

B1370142

B1370158

GDH80603A*A*

GDH80804B*A*

B1370142

OPENS*

-0.60

-0.70

-0.60

GDH81005C*A*

B1370158 -0.70

*Negative pressure readings are in inches of water column (in *w.c.)

GDH8***A*

Part Number

Open Setting (°F)

GDH80403A*A*

GDH80603A*A*

GDH80804B*A*

GDH81005C*A*

PRIMARY LIMIT

0130F00035

220

1

1

---

---

0130F00036

180

---

---

1

1

ROLLOUT LIMIT SWITCHES

Part Number

Open Setting (°F)

GDH80403A***

GDH80603A***

GDH80804B***

GDH81005C***

10123529

300

1

1

1

1

AUXILIARY LIMIT SWITCHES

Part N umber

Open Setting (°F)

GDH80403A***

GDH80603A***

GDH80804B***

GDH81005C***

0130F00038

120

1

1

1

1

PRODUCT DESIGN

MODEL

GDH80403A*B*

PRESSU RE SWITCH

PART

NO.

B1370142

B1370142

GDH80603A*B*

GDH80804B*B*

B1370142

OPENS*

-0.60

-0.60

-0.60

GDH81005C*B*

0130F00042 -0.80

*Negative pressure readings are in inches of water column (in *w.c.)

GDH8***B*

Part Number

Open Setting (°F)

GDH80403A*B*

GDH80603A*B*

GDH80804B*B*

GDH81005C*B*

PRIMARY LIMIT

0130F00036

180

1

1

1

---

20162901

210

---

---

---

1

ROLLOUT LIMIT SWITCHES

Part Number

Open Setting (°F)

GDH80403A***

GDH80603A***

GDH80804B***

GDH81005C***

10123529

300

1

1

1

1

AUXILIARY LIMIT SWITCHES

Part N umber

Open Setting (°F)

GDH80403A***

GDH80603A***

GDH80804B***

GDH81005C***

0130F00038

120

1

1

1

1

7

8

PRODUCT DESIGN

Coil Matches:

A large array of Goodman

® brand coils are available for use with the GDH8 furnaces, in dedicated downflow applications.

These coils are available in both cased and uncased models (with the option of a field installed TXV expansion device).

These 80% furnaces match up with the existing Goodman

®

brand coils as shown in the chart below.

Coil Matches (Goodman

®

units using R22 and R-410A):

C A P F 1824 A 6 A

PRODUCT

TYPE:

C: Indoor Coil

EXPANSION

DEVICE:

F: Flowrater

CABINET FINISH:

U: Unpainted

P: Painted

N: Unpainted Case

APPLICATION

A: Upflow/Downflow Coil

H: Horizontal A Coil

S: Horizontal Slab Coil

NOMINAL CAPACITY RANGE

@ 13 SEER

1824: 1 1/2 to 2 Tons

3030: 2 1/2 Tons

3636: 3 Tons

3642: 3 to 3 1/2 Tons

3743: 3 to 3 1/2 Tons

4860: 4 & 5 Tons

4961: 4 & 5 Tons

REVISION

A: Revision

REFRIGERANT

CHARGE:

6: R-410A or R-22

2: R-22

4: R-410a

NOMINAL WIDTH FOR GAS FURNACE

A: Fits 14" Furnace Cabinet

B: Fits 17 1/2" Furnace Cabinet

C: Fits 21" Furnace Cabinet

D: Fits 24 1/2" Furnace Cabinet

N: Does Not Apply (Horizontal Slab Coils)

• All CAPF coils in B, C, & D widths have insulated blank off plates for use with one size smaller furnaces.

• All CAPF coils have a CAUF equivalent.

• All CHPF coils in B, C & D heights have an insulated Z bracket for use with one size smaller furnace.

• All proper coil combinations are subject to being AHRI rated with a matched outdoor unit.

PRODUCT DESIGN

Thermostats:

NOTE: Complete lineup of thermostats can be found in the Thermostat Specification Sheets.

Filters:

Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or

CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty

MINIMUM FILTER SIZES for DISPOSABLE FILTERS

FURNACE INPUT

40M

60M

80M

100M

FILTER SIZE

320 in

2

483 in

2

640 in

2

800 in

2

DI SPOSABLE NOMINAL 300 F.M. FACE VELOCI TY

9

PRODUCT DESIGN

Dual $aver Configuration & Operation

Dual$aver

This furnace is capable of the following heating modes:

• Single Stage (Factory Setting)

• Modified Two-Stage

> Fixed 5-Min. Low Stage

> Auto Time (1-12 Min.) Low Stage

To change from the factor single-stage operation, adjust the dipswitches on the ignition control as follows:

HEAT OFF

DELAY

SECOND

DELAY

MODE 2-STAGE

SECOND

DELAY

1-STAGE

SECOND

STAGE

ONLY

AUTO

*

Switches for White-Rodgers board shown above

With other venders, order of switches may vary

but functionality stays the same.

Note: This furnace is designed to be used

with a single-stage thermostat.

Start Start

Call for Heat

Safety Circuit Check

Call for Heat

Safety Circuit Check

Start Furnace in Low Stage

Low-Heat Blower

Delay Time (5 Min)

Gas Valve Switch to 2nd Stage

Blower Switch to

Hi Heat Operation

T-Stat Satisfied

Start Furnace in Low Stage

Low-Heat Blower

Delay Time (1-12 Min)

Gas Valve Switch to 2nd Stage

Blower Switch to

Hi Heat Operation

T-Stat Satisfied

10

FURNACE SPECIFICATIONS

MODEL

Btuh Input (US) High Fire

(1)

Output (US) High Fire

A.F.U.E.

(2)

Rated External Static (" w.c.)

Temperature Rise (°F)

Pressure Switch Trip Point (" w.c.)

Blower Wheel (D" x W")

Blower Horsepower

Blower Speeds

Available AC @ 0.5” ESP

Power Supply

Minimum Circuit Ampacity (MCA)

(4)

Maximum Overcurrent Device

(5)

Transformer (VA)

Heat Anticipator (Amps)

Primary Limit Setting (°F)

Auxiliary Limit Setting (°F)

Rollout Limit Setting (°F)

Gas Supply Pressure (Natural/Propane) (" w.c.)

Manifold Pressure (Natural/Propane) High Stage (" w.c.)

Orifice Size (Natural/Propane)

Number of Burners

Vent Connector Diameter (inches)

(3)

Shipping Weight (lbs.)

GDH80403A*A*

45,000

36,000

80%

.20 - .50

35-65

-0.60

10 X 6

1/3

4

3

115-60-1

8.5

15

40

0.7

220

120

300

7 / 11

3.5 / 10

#43 / #55

2

4

88

GDH80603A***

70,000

56,000

80%

.20 - .50

30-60

-0.70

10 X 6

1/3

4

3

115-60-1

8.5

15

40

0.7

220

120

300

7 / 11

3.5 / 10

#43 / #55

3

4

92

GDH80804B*A*

90,000

72,000

80%

.20 - .50

35-65

-0.60

10 X 8

1/2

4

4

115-60-1

12.9

15

40

0.7

180

120

300

7 / 11

3.5 /10

#43 / #55

4

4

106

GDH8***A*

GDH81005C*A*

115,000

92,000

80%

.20 - .50

40-70

-0.70

10 X 10

3/4

4

5

115-60-1

12.9

15

40

0.7

180

120

300

7 / 11

3.5 /10

#43 / #55

5

4

114

1 Natural Gas BTU/h. For altitudes above 2,000’, reduce input rating 4% f or each 1,000’ above sea level.

2 DOE AFUE based upon Isolated Combustion S ystem (I CS)

3 Vent and combustion air diameters may vary depending upon vent length.

Ref er to the latest editions of the National Fuel Gas Code NFPA 54/ ANSI Z223.1 (in the US A) and the Canada National Standard of Canada, CAN/CSA B149. 1

and CA N/CSA B142. 2 (in Ca

4 Minimum Circuit Ampacity = (1.25 x Circulat or Blower Amps) + I D Blower amps. Wire size should be determined in accordance with National Elect rical Codes.

Extens ive wire runs will require larger wire sizes.

5 Maximum Overcurrent Protection Device refers to maximum recommended fuse or circ uit breaker size. May use fuses or HACR-type circuit breakers of the same s ize as noted.

Notes:

• All furnaces are manufactured f or use on 115 VAC, 60 Hz, single-phase elect rical supply.

• Gas Service Connection ½” FP T

• I mportant: Size fuses and wires properly and make electrical connections in ac cordance wit h t he National Electrical Code and/ or all exis ting local codes.

NOTES:

* These furnaces are manufactured for natural gas operation. Optional Kits are available for conversion to propane gas operation.

* For elevations above 2000 ft. the rating should be reduced by 4% for each 1000 ft. above sea level. The furnace must not be derated, orifice changes should only be made if necessary for altitude.

* The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufactures method in accordance with the "A.S.H.R.A.E.

GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the AIR CONDITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal to or less than the heating capacity. Output based on D.O.E. test procedures, steady state efficiency times output.

Unit specifications are subject to change without notice. ALWAYS refer to the unit's serial plate for the most up-to-date general and electrical information.

11

FURNACE SPECIFICATIONS

MODEL

Btuh Input (US) High Fire

Output (US) High F ire

A.F.U.E.

(1)

Rated External Static (" w.c.)

T emperature Rise (°F)

Pressure Switch Trip Point (" w.c.)

Blower Wheel (D" x W")

Blower Horsepower

Blower Speeds

Available AC @ 0.5” ESP

Power Supply

Minimum Circuit Ampacity (MCA)

(3)

Maximum Overcurrent Device

(4)

T ransformer (VA)

Heat Anticipator (Amps)

Primary Limit Setting (°F)

Auxiliary Limit Setting (°F)

Rollout Limit Setting (°F)

Gas Supply Pressure (Natural/Propane) (" w.c.)

Manifold Pressure (Natural/Propane) High Stage (" w.c.)

Orifice Size (Natural/Propane)

Number of Burners

Vent Connector Diameter (inches)

(2)

Shipping Weight (lbs.)

GDH80403 A*B*

40

0.7

180

120

300

7 / 11

3.5 / 10

#45 / #55

2

4

88

40,000

32,000

80%

.20 - .50

25-55

-0.60

10 X 6

1/3

4

3

115-60-1

8.5

15

GDH80603A*B*

40

0.7

180

120

300

7 / 11

3.5 / 10

#45 / #55

3

4

92

60,000

48,000

80%

.20 - .50

30-60

-0.60

10 X 6

1/3

4

3

115-60-1

8.5

15

GDH80804B*B*

40

0.7

180

120

300

7 / 11

3.5 /10

#45 / #55

4

4

106

80,000

64,000

80%

.20 - .50

35-65

-0.60

10 X 8

1/2

4

4

115-60-1

12.9

15

GDH8***B*

GDH81005C*B*

40

0.7

210

120

300

7 / 11

3.5 /10

#45 / #55

5

4

114

100,000

80,000

80%

.20 - .50

40-70

-0.80

10 X 10

3/4

4

5

115-60-1

12.9

15

1 DOE AFUE based upon Isolated Combustion System (I CS)

2 Vent and combustion air diameters may vary depending upon vent length.

Ref er to the latest editions of the National Fuel Gas Code NFPA 54/ ANSI Z223.1 (in the USA) and the Canada National Standard of Canada, CAN/CSA B149. 1

and CAN/CSA B142.2 (in Ca

3 Minimum Circuit Ampacity = (1.25 x Circulator Blower Amps) + I D Blower amps. Wire size should be det ermined in accordance with National Elect rical Codes.

Ext ens ive wire runs will require larger wire sizes.

4 Maximum Overcurrent Protection Device refers to maximum recommended fuse or circ uit breaker size. May use fuses or HACR-type circuit breakers of the same s ize as noted.

Notes:

• All furnaces are manufactured f or use on 115 VAC, 60 Hz, single-phase elect rical supply.

• G as Service Connect ion ½” FPT

• Important : Size fuses and wires properly and make electrical connections in ac cordance wit h t he National Elect rical Code and/ or all exis ting local codes.

NOTES:

* These furnaces are manufactured for natural gas operation. Optional Kits are available for conversion to propane gas operation.

* The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufactures method in accordance with the "A.S.H.R.A.E. GUIDE" or "MANUAL

J-LOAD CALCULATIONS" published by the AIR CONDITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal to or less than the heating capacity.

Output based on D.O.E. test procedures, steady state efficiency times output.

Unit specifications are subject to change without notice. ALWAYS refer to the unit's serial plate for the most up-to-date general and electrical information.

12

BLOWER PERFORMANCE SPECIFICATIONS

Model

GDH8

0403A*A*

GDH8

0603A*A*

GDH8

0804B*A*

GDH8

1005C*A*

GDH8***A*

4.0

3.5

3.0

2.5

5.0

4.0

2.5

2.0

1.5

3.5

3.0

Med

Med-Lo

Low

Hi gh

Med

Med-Lo

Low

Hi gh

Med

Med-Lo

Low

BLOWER PERFORMANCE

(CFM & Temperature Rise vs. External Static Pressure)

Tons AC

Motor

Speed 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

Hi gh 3.0

1 ,353 25 1,290 26 1,246 27 1,199 28 1,149 29 1,116 1,11 6 1,099

Med

Med-Lo

Low

Hi gh

2.5

2.0

1.5

3.0

1 ,183 28 1,113 30 1,098 30 1,052 32 1,039 32 1,006 1,01 2 969

980 34 9 46 35 920 36 900 37 896 37 885 855 804

778 43 7 62 44 738 45 746 45 738 45 717 696 678

1 ,290 40 1,236 42 1,194 43 1,166 44 1,176 44 1,166 1,10 8 1,029

1 ,139 46 1,090 48 1,035 50 1,063 49 1,063 49 1020 962 895

962 54 9 27 56 925 56 941 55 909 57 877 834 779

787 66 7 76 67 763 68 744 70 723 72 690 641 581

2 ,128 31 2,063 32 2,001 33 1,927 35 1,824 37 1,726 1,62 8 1,529

1 ,840 36 1,788 37 1,745 38 1,689 39 1,625 41 1,550 1,47 0 1,364

1 ,602 42 1,558 43 1,543 43 1,493 45 1,455 46 1,402 1,32 8 1,239

1 ,277 52 1,252 53 1,244 54 1,229 54 1,214 55 1,179 1141 1079

2 ,405 35 2,361 36 2,250 38 2,161 39 2,037 42 1,937 1,80 8 1,689

1 ,880 45 1,838 46 1,794 47 1,734 49 1,677 51 1,568 1,51 0 1,401

1659 51 1,630 52 1,587 54 1,537 55 1,492 57 1,445 1,36 8 1,287

1 ,472 58 1,454 59 1,404 61 1,366 62 1,326 64 1300 1228 1139

NOTES:

• CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer.

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

• For most jobs, about 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.

• The chart is for information only. For satisfactory operation, external static pressure must not exceed values shown on the rating plate. The shaded area indicates ranges in excess of maximum static pressure allowed when heating.

• The dashed (- - -) areas indicate a temperature rise not recommended for this model.

• At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while ESP at the CFM will be lower.

13

BLOWER PERFORMANCE SPECIFICATIONS

Model

GDH8

0403A*B*

GDH8***B*

BLOWER PERFORMANCE

(CFM & Temperature Rise vs. External Static Pressure)

Tons AC

Motor

Speed at 0.5"

ESP

0.1

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.2

0.3

0.4

0.5

0.6

0.7

0.8

CFM RISE CF M RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

Hi gh 3.0

1 ,353 ---1,290 ---1,246 ---1,199 25 1,149 26 1,116 1,11 6 1,099

Med 2.5

1 ,183 25 1,113 27 1,098 27 1,052 28 1,039 29 1,006 1,01 2 969

Med-Lo

Low

Hi gh

2.0

1.5

3.0

980 30 9 46 31 920 32 900 33 896 33 885 855 804

778 38 7 62 39 738 40 746 40 738 40 717 696 678

1 ,290 34 1,236 36 1,194 37 1,166 38 1,176 38 1,166 1,10 8 1,029

GDH8

0603A*B*

Med

Med-Lo

Low

2.5

2.0

1.5

1 ,139 39 1,090 41 1,035 43 1,063 42 1,063 42 1,020 962 895

962 46 9 27 48 925 48 941 47 909 49 877 834 779

787 56 7 76 57 763 58 744 60 723 ---690 641 581

GDH8

0804B*B*

GDH8

1005C*B*

Hi gh

Med

Med-Lo

Low

Hi gh

Med

Med-Lo

Low

2.5

5.0

4.0

4.0

3.5

3.0

3.5

3.0

2 ,128 ---2,063 ---2,001 ---1,927 ---1,824 ---1,726 1,62 8 1,529

1 ,840 ---1,788 ---1,745 ---1,689 35 1,625 36 1,550 1,47 0 1,364

1 ,602 37 1,558 38 1,543 38 1,493 40 1,455 41 1,402 1,32 8 1,239

1 ,277 46 1,252 47 1,244 48 1,229 48 1,214 49 1,179 1,14 1 1,079

2 ,405 ---2,361 ---2,250 ---2,161 ----2,037 36 1,937 1,80 8 1,689

1 ,880 39 1,838 40 1,794 41 1,734 43 1,677 44 1,568 1,51 0 1,401

1 ,659 45 1,630 45 1,587 47 1,537 48 1,492 50 1,445 1,36 8 1,287

1 ,472 50 1,454 51 1,404 53 1,366 54 1,326 56 1,300 1,22 8 1,139

NOTES:

• CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer.

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

• For most jobs, about 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.

• The chart is for information only. For satisfactory operation, external static pressure must not exceed values shown on the rating plate. The shaded area indicates ranges in excess of maximum static pressure allowed when heating.

• The dashed (- - -) areas indicate a temperature rise not recommended for this model.

• At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while ESP at the CFM will be lower.

14

BLOWER PERFORMANCE SPECIFICATIONS

ISE E R UR RAT PE TEM

15

WIRING DIAGRAM

WARNING:DISCONNECT POWER BEFORE

SERVICING.WIRING TO UNIT MUST BE

PROPERLY POLARIZED AND GROUNDED.

24 VAC

HUMIDIFIER

C G

10 11

7 8

12

9

4

1

5

2

6

3

R W Y

AUTO

1 STG

150 SEC

5 MIN

2 STG

100 SEC

D S

TG

DL

Y

2N

MODE

HT O

FF D

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

GND (8)

MVC (9)

MVH (12)

MVL (2)

AUXILIARY

LIMIT CONTROLS

C

C2

HI

GAS

VALVE

M1

ID BLOWER

PRESSURE

SWITCH

NO

PS (10)

PSO (4)

TO

MICRO HLI (7)

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 24V

115V

XFMR

BK

IND

ID

BLWR

HE

AT

LO

-H

COOL-H

CIRCULATOR

BLWR

HI

HE

AT

-H

IND-N

CIR-N

WH

COLOR CODES:

YL YELLOW

OR ORANGE

PU PURPLE

GR GREEN

BK BLACK

GR

PK PINK

BR BROWN

WH WHITE

BL BLUE

GY GRAY

RD RED

0140F00662 REV. A

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

PM

1

C

3

BK

HOT

SURFACE

IGNITER

HI

2

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

3

4

5

1

2

6

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

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).

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

GDH8

16

SCHEMATICS

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

AUX LIM

HIGH LIM

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

17