Goodman GDS8 User manual

GDS8 & GHS8
33-3/8" 80% Gas Furnace Units
•RefertoServiceManualRS6610004forinstallation,operation,andtroubleshootinginformation.
•Allsafetyinformation must be followedasprovided in the ServiceManual.
•RefertotheappropriatePartsCatalog for part number information.
•Modelnumbers listed on page 3.
RT6622013r2
March 2013
Copyright © 2005-2007 Goodman Manufacturing Company, L.P.
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANUALAL
ALAL
AL
Copyright©2011,2013 GoodmanManufacturingCompany,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
Themodelandmanufacturingnumberareusedforpositiveidentification of component parts used in manufacturing. Please
usethesenumberswhen requesting service or parts information.
Installation and repair of this unit
should be performed ONLY by
individuals meeting the requirements (at a minimum) of
an "entry level technician" as specified by the Air-Condi-
tioning, Heating, and Refrigeration Institute (AHRI). At-
tempting to install or repair this unit without such back-
ground 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
B* Revisions
NOMINAL INPUT:
040: 40,000 Btuh
060: 60,000 Btuh
080: 80,000 Btuh
100: 100,000Btuh
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:
A* Revisions
NOMINAL INPUT:
040: 45,000 Btuh
060: 70,000 Btuh
080: 90,000 Btuh
100: 115,000 Btuh

3
PRODUCT IDENTIFICATION
The model and manufacturing number are used for positive identification of component parts used in manufacturing.
Pleaseusethese numbers when requesting serviceorparts information.
* These models available in Natural Gas and Low NOx
GDS80403A*A*
GDS80603A*A*
GDS80804B*A*
GDS81005C*A*
GHS80403A*A*
GHS80604A*A*
GHS80805C*A*
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
thatisnotdesigncertifiedbyGood-
man for use with this unit. Serious
property damage, personal injury, reduced unit perfor-
mance 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
GDS80403A*B*
GDS80603A*B*
GDS80804B*B*
GDS81005C*B*
GHS80403A*B*
GHS80604A*B*
GHS80805C*B*

4
PRODUCT DESIGN
NFPA 54/ANSI Z223.1 - latest edition. In Canada, the fur-
nacesmustbeventedin accordance withtheNationalStan-
dardofCanada, CAN/CSA B149.1 and CAN/CSA B149.2-
latesteditions and amendments.
NOTE: Theverticalheightof the Category I ventingsystem
must be at least as great as the horizontal length of the
ventingsystem.
Accessibility Clearances (Minimum)
Unobstructedfrontclearanceof24"for servicing isrecom-
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 tablesoutlined in the Installation Manual for
additional venting requirements.
Vent
Sides TopRear Front*
Note: Inall cases accessibility clearanceshall take prece-
denceoverclearancesfrom the enclosurewhereaccessibil-
ityclearancesaregreater. Alldimensionsaregivenininches.
HighAltitudeDerate
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
themanifoldpressurebelow4500feet.Thiscancause poor
combustionandequipment failure.
Highaltitudeinstallationsabove4500feetmayrequireboth
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
higheraltitude.
For installations above 4500 feet, please refer to your dis-
tributorforrequiredkit(s). Contactthedistributorforatabular
listing of appropriate manufacturer’s kits for propane gas
and/orhighaltitudeinstallations.The indicated kits must be
used to insure safe and proper furnace operation. All con-
versions must be performed by a qualified installer, or ser-
vice agency.
GeneralOperation
TheG*S8furnaces are equipped with anelectronicignition
deviceusedtolighttheburnersandaninduceddraftblower
to exhaust combustion products.
An interlock switch prevents furnace operation if the inner
blowerdoor is not inplace. Keep the blower access door in
placeexceptfor inspection and maintenance.(Seeillustra-
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
notoperatingproperly,thecontrolmoduleLED will flash on
and off in a factory-programmed sequence, depending on
theproblemencountered. This light canbeviewed through
theobservationwindowin the blower access door.Referto
theTroubleshootingChartforfurtherexplanationoftheLED
codesandAbnormalOperation-IntegratedIgnitionControl
section in the Service Instructions for an explanation of the
possibleproblem.
Theratedheatingcapacityof the furnace should be greater
thanor equal to thetotal heat lossof the area tobe heated.
The total heat loss should be calculated by an approved
methodorinaccordance with “ASHRAE Guide” or “Manual
J-LoadCalculations”publishedbytheAir Conditioning Con-
tractors of America.
*Obtain from: American National Standards Institute 1430
BroadwayNewYork,NY10018
LocationConsiderations
• The furnace should be as centralized as is practical
with respect to the air distribution system.
• Donotinstallthefurnacedirectly on carpeting, tile, or
combustiblematerialotherthanwood flooring.
• When installed in a residential garage, the furnace
mustbepositionedsotheburnersand 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 IVENTED. DO NOT VENT USING
CATEGORY III VENTING.
CategoryI Venting is ventingat 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: Singlestagegasfurnaceswithinduced draft
blowers draw products of combustion through a heat ex-
changerallowing,in some instances, common venting with
naturaldraftappliances(i.e.waterheaters).All installations
mustbeventedinaccordancewithNationalFuelGasCode

5
PRODUCT DIMENSIONS GHS8
MODEL A B
GHS80403A*** 14 1/2" 12 1/2"
GHS80604B*** 17 1/2" 16"
GHS80805C*** 21" 19 1/2"

6
PRODUCT DESIGN
MODEL A B
GDS80403A***
GDS80603A***
GDS80804B*** 17 1/2" 16"
GDS81005C*** 21" 19 1/2"
14 1/2" 12 1/2"
GDS8
28”
High Voltage
Electrical
Lov Voltage
Electrical
Gas Inlet
A
B
33-3/8”

7
PRODUCT DESIGN GHS8***A*
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 0130F00038
Open Setting (°F) 120
GHS80403A*** 1
GHS80604B*** 1
GHS80805C*** 1
AUXILIARY LIMIT SWITCHES
Part Number 10123529
Open Setting (°F) 300
GHS80403A*** 2
GHS80604B*** 2
GHS80805C*** 2
ROLLOUT LIMIT SWITCHES
Model
Trip Point
ID Blower
Pressure
Switch
ID Blower
Pressure
Switch
Part #
GHS80403A*A* -0.80 0130F00042
GHS80604B*A* -0.70 B1370158
GHS80805C*A* -0.70 B1370158
PRESSURE SWITCH TRIP POINTS
AND USAGE CHART
Part Number 0130M00063 20162903
Open Setting (°F) 140 160
GHS80403A*A* 1---
GHS80604B*A* --- 1
GHS80805C*A* 1---
PRIMARY LIMIT

8
PRODUCT DESIGN GHS8***B*
Part Number 0130M00063 20162903
Open Setting (°F) 140 160
GHS80403A*B* --- 1
GHS80604B*B* 1---
GHS80805C*B* 1---
PRIMARY LIMIT
Part Number 0130F00038
Open Setting (°F) 120
GHS80403A*** 1
GHS80604B*** 1
GHS80805C*** 1
AUXILIARY LIMIT SWITCHES
Part Number 10123529
Open Setting (°F) 300
GHS80403A*** 2
GHS80604B*** 2
GHS80805C*** 2
ROLLOUT LIMIT SWITCHES
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.)
Model
Trip Point
ID Blower
Pressure
Switch
ID Blower
Pressure
Switch
Part #
GHS80403A*B* -0.70 B1370158
GHS80604B*B* -0.80 0130F00042
GHS80805C*B* -0.75 B1370179
PRESSURE SWITCH TRIP POINTS
AND USAGE CHART

9
PRODUCT DESIGN GDS8***A*
Part Number 10123529
Open Setting (°F) 300
GDS80403A*** 1
GDS80603A*** 1
GDS80804B*** 1
GDS81005C*** 1
ROLLOUT LIMIT SWITCHES
Part Number 0130F00038
Open Setting (°F) 120
GDS80403A*** 1
GDS80603A*** 1
GDS80804B*** 1
GDS81005C*** 1
AUXILIARY LIMIT SWITCHES
Model Part No. Opens*
GDS80403A*A* B1370142 -0.60
GDS80603A*A* B1370158 -0.70
GDS80804B*A* B1370142 -0.60
GDS81005C*A* B1370158 -0.70
PRESSURE SWITCHES
Part Number 0130F00035 0130F00036
Open Setting (°F) 220 180
GDS80403A*A* 1---
GDS80603A*A* 1---
GDS80804B*A* --- 1
GDS81005C*A* --- 1
PRIMARY LIMIT

10
PRODUCT DESIGN
Part Number 20162901 0130F00036
Open Setting (°F) 210 180
GDS80403A*B* --- 1
GDS80603A*B* --- 1
GDS80804B*B* --- 1
GDS81005C*B* 1---
PRIMARY LIMIT
Part Number 10123529
Open Setting (°F) 300
GDS80403A*** 1
GDS80603A*** 1
GDS80804B*** 1
GDS81005C*** 1
ROLLOUT LIMIT SWITCHES
Part Number 0130F00038
Open Setting (°F) 120
GDS80403A*** 1
GDS80603A*** 1
GDS80804B*** 1
GDS81005C*** 1
AUXILIARY LIMIT SWITCHES
GDS8***B*
Model Part No. Opens*
GDS80403A*B* B1370142 -0.60
GDS80603A*B* B1370142 -0.60
GDS80804B*B* B1370142 -0.60
GDS81005C*B* 0130F00042 -0.80
PRESSURE SWITCHES