Goodman Mfg Co Lp Gas Heater Gds8 Users Manual

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GDS8 & GHS8

33-3/8" 80% Gas Furnace Units

•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.

RT6622011

September 2009

Copyright © 2005-2007 Goodman Manufacturing Company, L.P.

TECHNICAL MANUTECHNICAL MANU

TECHNICAL MANUTECHNICAL MANU

TECHNICAL MANUALAL

ALAL

AL

Copyright © 2009 Goodman Manufacturing Company, L.P.

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.

PRODUCT IDENTIFICATION

2

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.

Installation and repair of this unit

should be performed ONLY by

individuals meeting the requirements of an "entry level

technician" 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.

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.

WARNING

WARNING 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.

WARNING

WARNING WARNING

WARNING

G D S 8 045 3 A X C A

AIRFLOW DIRECTION

D: Dedicated Downflow

H: High Airflow

FURNACE

TYPE

S: Single Stage/

Multi-speed

AFUE:

8: 80%

BRAND:

G: Goodman®

Brand

NOMINAL INPUT:

045: 45,000 Btuh

070: 70,000 Btuh

090: 70,000 Btuh

115: 115,000 Btuh

AIRFLOW

CAPABILITY:

3: 1200

4: 1600

5: 2000

ADDITIONAL

FEATURES:

N: Natural Gas

X: Low NO

x

MAJOR

REVISION:

CABINET WIDTH:

A: 14"

B: 17 1/2"

C: 21"

MINOR

REVISION:

3

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.

* These models available in Low NOx

The United States Environmental Protection Agency (“EPA”) has issued various regulations re-

garding 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.

WARNING

WARNING

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.

WARNING

WARNING To prevent the risk of property

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.

WARNING

WARNING

GDS80453AXC*

GDS80703AXC*

GDS80904BXC*

GDS81155CXC*

GHS80453AXC*

GHS80704AXC*

GHS81155CXC*

4

PRODUCT DESIGN

NFPA 54/ANSI Z223.1 - latest edition. In Canada, the fur-

naces must be vented in accordance with the National Stan-

dard 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 recom-

mended.

SW B

1036 11

* 24" clearance for serviceability recommended.

MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS - INCHES

** Sin

g

le Wall Vent

(

SW

)

to be used onl

y

as a connector.

Refer to the venting tables outlined in the Installation Manual for

additional venting requirements.

Vent

Sides TopRear Front*

Note: In all cases accessibility clearance shall take prece-

dence over clearances from the enclosure where accessibil-

ity clearances are greater. All dimensions are given in inches.

High Altitude Derate

When this furnace is installed at high altitude, the appropri-

ate High Altitude orifice kit must be installed. This is re-

quired due to the natural reduction in the density of both the

gas fuel and combustion air as altitude increases. The kit

will provide the proper design certified input rate within the

specified altitude range.

2000 3000 4000 4500 5000 6000 7000 8000

US BURNER

ORIFICE 44/55 44/55 45/56 45/56 46/57 47/58 47/58

CANADA BURNER

ORIFICE 44/55 47/57

HA-02 HIGH ALTITUDE CONVERSION KIT REQUIRED

Tabled data is based upon the furnace input being reduced for altitudes above sea level. U.S. 4% per 1,000 feet.

Canada 10% derate for 2,000-4,000 feet.

ELEVATION ABOVE SEA-LEVEL (FEET)

INPUT PER BURNER - 22,500 BTUH NATURAL GAS / 20,000 BTUH L.P.

High altitude kits are purchased according to the installa-

tion altitude and usage of either natural or propane gas. Refer

to the chart above for a tabular listing of appropriate altitude

ranges and corresponding manufacturer’s high altitude Natu-

ral Gas and Propane Gas kits. For a tabular listing of appro-

priate altitude ranges and corresponding manufacturer's High

Altitude Pressure Switch kits, refer to either the Pressure

Switch Trip Points & Usage Chart in this manual or the Ac-

cessory Charts in Service Instructions.

General Operation

The G*S8 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 pages 5 and 6.)

This furnace is also equipped with a self-diagnosing elec-

tronic 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 Con-

tractors of America.

*Obtain from: American National Standards Institute 1430

Broadway New York, NY 10018

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 ve-

hicles.

Notes:

WARNING

TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION,

THIS FURNACE MUST BE CATEGORY I VENTED. DO NOT VENT USING

CATEGORY 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 ex-

changer 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

5

PRODUCT DIMENSIONS

MODEL A B

GHS80453AXC* 14 1/2" 12 1/2"

GHS80704BXC* 17 1/2" 16"

GHS80905CXC* 21" 19 1/2"

MODEL A B

GDS80453AXC*

GDS80703AXC*

GDS80904BXC* 17 1/2" 16"

GDS81155CXC* 21" 19 1/2"

14 1/2" 12 1/2"

6

PRODUCT DESIGN GHS8

For installations in Canada, the GHS furances are certified only to 4,500 ft.

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

Part Number B1370145

Open Setting (°F) 300

GHS80453AXC* 2

GHS80704BXC* 2

GHS80905CXC* 2

ROLLOUT LIMIT SWITCHES

Part Number 0130F00038

Open Setting (°F) 120

GHS80453AXC* 1

GHS80704BXC* 1

GHS80905CXC* 1

AUXILIARY LIMIT SWITCHES

Part Number 0130M00063 20162903

Open Setting (°F) 140 120

GHS80453AXC* 1---

GHS80704BXC* --- 1

GHS80905CXC* 1---

PRIMARY LIMIT

Model

Trip Point

ID Blower

Pressure

Switch

ID Blower

Pressure

Switch

Part #

GHS80453AXC* -0.80 0130F00042

GHS80704BXC* -0.70 B1370158

GHS80905CXC* -0.70 B1370158

Pressure Switch Trip Points

And Usage Chart

7

PRODUCT DESIGN GDS8

Part Number B1370145

Open Setting (°F) 300

GDS80453AXC* 2

GDS80703AXC* 2

GDS80904BXC* 2

GDS81155CXC* 2

ROLLOUT LIMIT SWITCHES

Model Part No. Opens*

GDS80453AXC* B1370142 -0.60

GDS80703AXC* B137158 -0.70

GDS80904BXC* B1370142 -0.60

GDS81155CXC* B137158 -0.70

Presssure Switches

Part Number 0130F00035 0130F00036

Open Setting (°F) 220 180

GDS80453AXC* 1---

GDS80703AXC* 1---

GDS80904BXC* --- 1

GDS81155CXC* --- 1

PRIMARY LIMIT

Part Number 0130F00038

Open Setting (°F) 120

GDS80453AXC* 1

GDS80703AXC* 1

GDS80904BXC* 1

GDS81155CXC* 1

AUXILIARY LIMIT SWITCHES

8

PRODUCT DESIGN

Coil Matches:

A large array of Amana® brand coils are available for use with the GHS8 furnaces, in horizontal applications and for the

GDS8 for 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 Amana® brand coils as shown below.

Coil Matches (for Goodman® units using R22 and R-410A):

• 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.

C A P F 1824 A 6 A

PRODUCT

TYPE:

C: Indoor Coil

CABINET FINISH:

U: Unpainted

P: Painted

N: Unpainted Case

EXPANSION

DEVICE:

F: Flowrate

r

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

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)

APPLICATION

A: Upflow/Downflow Coil

H: Horizontal A Coil

S: Horizontal Slab Coil

REFRIGERANT

CHARGE:

6: R-410A or R-22

2: R-22

4: R-410a

9

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

Upflow Filters

This furnace has provisions for the installation of return air filters at the side and/or bottom return. The furnace will

accommodate the following filter sizes depending on cabinet size:

Cabinet

Width

(in.)

Nominal

Filter Size

(in.)

Approx.

Flow Area

(in2)

Cabinet

Width

(in.)

Nominal

Filter Size

(in.)

Approx.

Flow Area

(in2)

All 16 x 25 x 1 400 17-1/2 14 x 25 x 1 350

21 16 x 25 x 1 400

24-1/2 20 x 25 x 1 500

BOTTOM RETURNSIDE RETURN

Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere in

the duct system such as a central return.

Disposable Minimum Filter Area (in2)

[Based on a 300 ft/min filter face velocity]

*Minimum filter area dictated by heating airflow requirement. *Minimum filter area dictated by heating airflow requirement.

Permanent Minimum Filter Area (in2)

[Based on 600 ft/min filter face velocity]

600 800 1000 1200 1400 1600 2000

0704__XA --- --- 627* 627* 672 768 ---

0905__XA --- --- --- 836* 836* 836* 960

1155__XA --- --- --- 940* 940* 940* 960

600 800 1000 1200 1400 1600 2000

0704__XA --- --- 320* 320* 336 384 ---

0905__XA --- --- --- 427* 427* 427* 480

UPFLOW

COOLING AIRFLOW REQUIREMENT (CFM)

COUNTERFLOW

COOLING AIRFLOW REQUIREMENT (CFM)

Input

Airflow Input__Airflow

600 800 1000 1200 1400 1600 2000

0704__XA --- --- 564* 564* 672 768

0905__XA --- --- --- 752* 752* 768 960

1155__XA --- --- --- 940* 940* 940* 960

600 800 1000 1200 1400 1600 2000

0704__XA --- --- 641* 641* 672 768 ---

0905__XA --- --- --- 854* 854* 854* 960

Input__Airflow

UPFLOW

COOLING AIRFLOW REQUIREMENT (CFM)

COUNTERFLOW

COOLING AIRFLOW REQUIREMENT (CFM)

Input

Airflow

10

PRODUCT DESIGN

Counterflow Filters

"A"

Min

Return Air

Optional

Access

Door

This furnace has provisions for the installation of return air filters at the counterflow top return. The furnace will accommodate

the following filter sizes depending on cabinet size:

Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere

in the duct system such as a central return.

Cabinet Width Filter Area

(in2)Qty Filter Size

(in)

Dimension "A"

(in)

21 13.0

24 1/2 11.3

21 18.8

24 1/2 17.7

21 24.3

24 1/2 23.4

15 X 20 X 1

20 X 20 X 1

25 X 20 X 1

600

800

1000

2

2

2

Counterflow Top Return

FURNACE SPECIFICATIONS

11

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.

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.

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

2 DOE AFUE based upon Isolated Combustion System (ICS)

5 Maximum Overcurrent Protection Device refers to maxim um recommended fuse or circuit breaker size. May use fuses or HACR-type circuit breakers of the sam e size as noted.

Notes:

• All furnaces are manufactured for use on 115 VAC, 60 Hz, single-phase electrical supply.

• Gas Service Connection ½” FPT

• Important: Si ze fuses and wires properly and make electrical connections in accordance with the National Electrical Code and/or all existing local codes.

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

Refer 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 Canada).

4 Minimum Circui t Ampacity = ( 1.25 x Circulator Blower Amps) + ID Blower amps. Wi re size should be determined in accordance with National Electrical Codes.

Extensi ve wire runs will requi re larger wire sizes.

GDS8

MODEL GDS80453AXC* GDS80703AXC* GDS80904BXC* GDS81155CXC*

Btuh Input (US) High Fire(1) 45,000 70,000 90,000 115,000

Output (US) High Fire(1) 36,000 56,000 72,000 92,000

A.F.U.E.(2) 80% 80% 80% 80%

Rated External Static (" w.c.) .20 - .50 .20 - .50 .20 - .50 .20 - .50

Temperature Rise (°F) 35-65 30-60 35-65 40 - 70

Pressure Switch Trip Point (" w.c.) -0.60 -0.70 -0.60 -0.70

Blower Wheel (D" x W") 10 X 6 10 x 6 10 x 8 10 x 10

Blower Horsepower 1/3 1/3 1/2 3/4

Blower Speeds

Max CFM @ 0.5 E.S.P.

Power Supply 115-60-1 115-60-1 115-60-1 115-60-1

Minimum Circuit Ampacity (MCA)(4) 8.5 8.5 12.9 12.9

Maximum Overcurrent Device(5) 15 15 15 15

Transformer (VA) 40 40 40 40

Heat Anticipator (Amps) 0.7 0.7 0.7 0.7

Primary Limit Setting (°F) 220 220 180 180

Auxiliary Limit Setting (°F) 120 120 120 120

Rollout Limit Setting (°F) 300 300 300 300

Gas Supply Pressure (Natural/Propane) (" w.c.) 7 / 11 7 / 11 7 / 11 7 / 11

Manifold Pressure

(Natural/Propane) High Stage (" w.c.) 3.5 / 10 3.5 / 10 3.5 /10 3.5 /10

Orifice Size (Natural/Propane) #43 / #55 #43 / #55 #43 / #55 #43 / #55

Number of Burners 2 3 4 5

Vent Connector Diameter (inches)(3) 4444

Shipping Weight (lbs.) 120 130 153 175

Refer toairflow charts.

FURNACE SPECIFICATIONS

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.

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.

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

2 DOE AFUE based upon Isolated Combustion System (ICS)

5 Maximum Overcurrent Protection Device refers to maxim um recommended fuse or circuit breaker size. May use fuses or HACR-type circuit breakers of the sam e size as noted.

Notes:

• All furnaces are manufactured for use on 115 VAC, 60 Hz, single-phase electrical supply.

• Gas Service Connection ½” FPT

• Important: Si ze fuses and wires properly and make electrical connections in accordance with the National Electrical Code and/or all existing local codes.

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

Refer 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 Canada).

4 Minimum Circui t Ampacity = ( 1.25 x Circulator Blower Amps) + ID Blower amps. Wi re size should be determined in accordance with National Electrical Codes.

Extensi ve wire runs will requi re larger wire si zes.

GHS8

MODEL GHS80453AXC* GHS80704BXC* GHS80905CXC*

Input, Natural Gas (BTUH)(1) 45,000 70,000 90,000

Output, Natural Gas (BTUH)(1) 36,000 56,000 72,000

Output, LP (BTUH) 32,000 48,000 64,000

A. F.U. E.(2 ) 80.0% 80.0% 80.0%

Rated External Static (" w.c.) 0.20 - 0.50 0.20 - 0.50 0.20 - 0.50

Temperature Rise (°F) 15 - 45 30 - 60 35 - 65

Pressure Switch Trip Point (" w.c.) -0.80 -0.70 -0.70

Blower Wheel (D" x W") 11” x 6” 11” x 8” 11” x 10”

Blower Horsepower 1/2 3/4 3/4

Blower Speeds

Max CFM @ 0.5 E.S.P.

Power Supply (Volts/Hz/Ph) 115/60/1 115/60/1 115/60/1

Minimum Circuit Ampacity (MCA) (4 ) 12.5 11.8 11.8

Maximum Overcurrent Device (5) 15 15 15

Transformer (VA) 40 40 40

ID Blower Pressure Switch Trip Point (" w.c.) -0.80 -0.70 -0.70

Primary Limit Setting (°F) 140 120 140

Auxiliary Limit Setting (°F) 120 120 120

Rollout Limit Setting (°F) 300 300 300

Gas Supply Pressure (Natural/Propane) (" w.c.) 7 / 11 7 / 11 7 / 11

Manifold Pressure (Natural/Propane) (" w.c.) 3.5 / 10 3.5 / 10 3.5 / 10

Orifice Size (Natural/Propane) 43 / 55 43 / 55 43 / 55

Number of Burners 2 3 4

Vent Connector Diameter (inches)(3 ) 444

Shipping Weight (lbs.) 120 130 153

Refer to airflow charts.

13

BLOWER PERFORMANCE SPECIFICATIONS GHS8

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.

• The above chart is for U.S. furnaces installed at 0' - 2,000'. 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.

Tons AC

at 0.5" 0.6 0.7 0.8

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

High 3.0 1,739 19 1,656 20 1,601 21 1,551 21 1,513 22 1,460 1,413 1,353

Med 2.5 1,422 23 1,399 24 1,378 24 1,350 25 1,305 26 1,275 1,220 1,178

Med-Lo 2.0 1,207 28 1,213 27 1,197 28 1,169 29 1,158 29 1,131 1,103 1,068

Low 1.5 991 34 980 34 958 35 950 35 937 36 924 910 874

High 4.0 2,097 25 2,068 25 2,012 26 1,939 27 1,869 28 1,795 1,718 1,631

Med 3.5 1,596 32 1,566 33 1,534 34 1,492 35 1,445 36 1,401 1,354 1288

Med-Lo 3.0 1,380 38 1,356 38 1,328 39 1,303 40 1,274 41 1,239 1,192 1127

Low 3.0 1239 42 1191 44 1165 45 1133 46 1,104 47 1,082 1,040 996

High 5.0 2,382 28 2,315 29 2,234 30 2,158 31 2,078 32 1,971 1,866 1,762

Med 4.0 1,622 41 1,603 42 1,583 42 1,556 43 1,516 44 1,482 1,422 1,359

Med-Lo 3.5 1,436 46 1,391 48 1,387 48 1,356 49 1,325 50 1,279 1,239 1,180

Low 3.0 1,240 54 1,214 55 1,191 56 1,157 58 1,120 60 1,083 1,052 1,025

BLOWER PERFORMANCE

0.1 0.2 0.3 0.4 0.5

(CFM & Temperature Rise vs. External Static Pressure)

Mo del

Heating Speed

As Shipped

Motor

Speed

EXTERNAL STATIC PRESSURE (Inches Water Column)

GHS8

0453AXC

(Med)²

GHS8

0704BXC

(Med)²

GHS8

0905CXC

(Med)²

(

)

BLOWER PERFORMANCE SPECIFICATIONS

14

GDS8

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 hig-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.

• The above chart is for U.S. furnaces installed at 0' - 2,000'. 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.

Tons AC

at 0.5" 0.6 0.7 0.8

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

HIGH 3.0 1,353 25 1,290 26 1,246 27 1,199 28 1,149 29 1,116 1,116 1,099

MED 2.5 1,183 28 1,113 30 1,098 30 1,052 32 1,039 32 1,006 1,012 969

MED-LO 2.0 980 34 946 35 920 36 900 37 896 37 885 855 804

LOW 1.5 778 43 762 44 738 45 746 45 738 45 717 696 678

HIGH 3.0 1,290 40 1,236 42 1,194 43 1,166 44 1,176 44 1,166 1,108 1,029

MED 2.5 1,139 46 1,090 48 1,035 50 1,063 49 1,063 49 1020 962 895

MED-LO 2.0 962 54 927 56 925 56 941 55 909 57 877 834 779

LOW 1.5 787 66 776 67 763 68 744 70 723 72 690 641 581

HIGH 4.0 2,128 31 2,063 32 2,001 33 1,927 35 1,824 37 1,726 1,628 1,529

MED 3.5 1,840 36 1,788 37 1,745 38 1,689 39 1,625 41 1,550 1,470 1,364

MED-LO 3.0 1,602 42 1,558 43 1,543 43 1,493 45 1,455 46 1,402 1,328 1,239

LOW 2.5 1,277 52 1,252 53 1,244 54 1,229 54 1,214 55 1,179 1141 1079

HIGH 5.0 2,405 35 2,361 36 2,250 38 2,161 39 2,037 42 1,937 1,808 1,689

MED 4.0 1,880 45 1,838 46 1,794 47 1,734 49 1,677 51 1,568 1,510 1,401

MED-LO 3.5 1659 51 1,630 52 1,587 54 1,537 55 1,492 57 1,445 1,368 1,287

LOW 3.0 1,472 58 1,454 59 1,404 61 1,366 62 1,326 64 1300 1228 1139

GDS8

1155CXC

(Med)²

GDS8

0453AXC

(Med)²

GDS8

0703AXC

(Med)²

GDS8

0904BXC

(Med)²

BLOWER PERFORMANCE

0.1 0.2 0.3 0.4 0.5

(CFM & Temperature Rise vs. External Static Pressure)

Model

Heating Speed

As Shipped

Motor

Speed

EXTERNAL STATIC PRESSURE (Inches Water Column)

()

15

BLOWER PERFORMANCE SPECIFICATIONS

30 40 50 60 70 80 90 110 120

100 130 140 150

100

90

80

70

60

50

40

30

20

10

OUTPUT BTU/HR x 1000

BTU OUTPUT vs TEMPERATURE RISE CHART

TEMPERATURE RISE

600 CFM

700

900

1000

1100

1200

1400

1600

1800

2000

2200

2400 CFM

FORMULAS

BTU OUTPUT = CFM x 1.08 x RISE

RISE = BTU OUTPUT

1.08 ÷ CFM

800

16

WIRING DIAGRAMS

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

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.

G*S8

BOX