Goodman GME8 User manual

Copyright ©2009-2010 Goodman Manufacturing Company, L.P.
RT6621020Rev.1
April2010
GME8
33-3/8" 80% Gas Furnace
Upflow/Horizontal
•RefertocurrentServiceManualRS6610004forinstallation,operation,andtroubleshootinginformation.
•Allsafety information mustbe followed asprovided in theService Manual.
•Refertothe appropriate PartsCatalogfor part numberinformation.
•Modelnumbers listed on page 3.
CUS
®
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANUALAL
ALAL
AL
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.
Pleaseuse these numberswhenrequesting serviceorparts information.
Installation and repair of this unit
should be performed ONLY by in-
dividuals meeting the require-
ments of an "entry level technician", at a minimum, as
specified by the Air-Conditioning, Heating, and Refrigera-
tion 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 M E 8 070 3 B X C A
SUPPLY
TYPE:
M: Upflow/Horizontal
FURNACE
TYPE
E: Two-Stage
w/X-13
Motor
AFUE:
8:80%
BRAND:
G: Goodman®
Brand
NOMINAL INPUT:
070: 70,000 Btu
090: 90,000 Btuh
115: 115,000Btuh
AIRFLOW
CAPABILITY:
3: 1200
4: 1600
5: 2000
ADDITIONAL
FEATURES:
N: Natural Gas
X: Low NOx
MAJOR
REVISION:
CABINET WIDTH:
B: 17 1/2"
C: 21"
MINOR
REVISION:

PRODUCT IDENTIFICATION
3
The model and manufacturing number are used for positive identification of component parts used in manufacturing.
Pleaseuse these numberswhenrequesting serviceorparts information.
GME80703BXC*
GME80905CXC*
GME81155CXC*
Allmodels arelow NOx models.
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

4
PRODUCT DESIGN
NOTE: Gas furnaces with induced draft blowers draw
productsofcombustion through aheatexchangerallowing,
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
mustbeventedin accordance with theNationalStandardof
Canada, CAN/CSA B149.1 and CAN/CSA B149.2 - latest
editionsandamendments.
NOTE: Thevertical height oftheCategory I ventingsystem
must be at least as great as the horizontal length of the
ventingsystem.
2. Linevoltagewiringcanenterthroughtherightorleft side
ofthefurnace. Low voltagewiringcan enter throughthe
rightor leftside of furnace.
3. Conversionkits forhigh altitude natural or propane gas
operation are available. See High Altitude Derate chart
fordetails.
4. Installer must supply the following gas line fittings, de-
pendingon whichentrance is used:
Left -- Two 90º Elbows, one close nipple, straight pipe.
Right --Straight pipe toreach gas valve.
GeneralOperation
GME8furnacesareequipped with anelectronicignition de-
viceusedto light theburnersandan induced draftblowerto
exhaustcombustion products.
Aninterlock switch preventsfurnaceoperation if theblower
door is not in place. Keep the blower access door in place
exceptfor inspection andmaintenance.
This furnace is also equipped with a self-diagnosing elec-
tronic control module. In the event a furnace component is
notoperatingproperly,thecontrolmodule LED will flash on
and off in a factory-programmed sequence, depending on
theproblem encountered. Thislight can beviewed through
theobservation window intheblower access door.Refer to
theTroubleshootingChart for further explanation of theLED
codesandAbnormalOperation - IntegratedIgnitionControl
section in the Service Instructions for an explanation of the
possibleproblem.
Theratedheating capacityofthe furnace shouldbegreater
thanor equalto the totalheat lossof the areato beheated.
The total heat loss should be calculated by an approved
methodor in accordancewith“ASHRAE Guide” or“Manual
J-LoadCalculations”publishedbytheAirConditioningCon-
tractors of America.
*Obtain from: American National Standards Institute 1430
BroadwayNewYork, NY 10018
LocationConsiderations
• The furnace should be as centralized as is practical
with respect to the air distribution system.
• Donotinstall the furnacedirectlyon carpeting, tile,or
combustiblematerialother thanwoodflooring.
• When suspending the furnace from rafters or joists,
use 3/8" threaded rod and 2” x 2” x 3/8” angle as
showninthe Installation and Service Instructions. The
length of the rod will depend on the application and
clearancenecessary.
• 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.
WARNING
TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION,
THIS FURNACE MUST BE CATEGORY IVENTED. DO NOT VENT USING
CATEGORY III VENTING.
Notes:
1.Category IVenting is ventingat anon-positive pressure.
A furnace vented as Category I is considered a fan-as-
sisted appliance and the vent system does not have to
be “gas tight.”

5
PRODUCT DESIGN
Accessibility Clearances (Minimum)
Unobstructed front clearanace of 24" for servicing is rec-
ommended.
Topclearancefor horizontal confirguration-1"
MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS - INCHES
SW B
103C611
** Single Wall Vent (SW) to be used only as a connector.
Refer toventing tablesoutlined in the installationmanualfor
additional venting requirements.
Vent Top
Approved for line contact in the horizontal postion.
* 24" clearance for serviceability recommended.
Sides Rear Front Bottom
24"at front isrequired for servicingor cleaning.
Note: Inall casesaccessibility clearance shalltake prece-
denceoverclearancesfromtheenclosurewhereaccessibil-
ityclearancesaregreater. Alldimensionsaregivenininches.
High Altitude Derate
Whenthis furnaceisinstalled athigh altitude, theappropri-
ate High Altitude orifice kit must be installed. This is re-
quireddueto thenaturalreductionin thedensityofboth the
gas fuel and combustion air as altitude increases. The kit
will provide the proper design certified input rate within the
specifiedaltituderange.
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-
tionaltitudeandusageofeithernaturalorpropane gas.Refer
tothechart above foratabular listing ofappropriatealtitude
rangesandcorrespondingmanufacturer’shighaltitudeNatu-
ralGasand Propane Gaskits.For a tabularlistingofappro-
priatealtituderangesandcorrespondingmanufacturer'sHigh
Altitude Pressure Switch kits, refer to either the Pressure
Switch Trip Points & Usage Chart in this manual or the Ac-
cessoryCharts inServiceInstructions.

PRODUCT DIMENSIONS
6
GME8*****XA
UNITS A B C D
GME80703BXC* 17.5 16 33-3/8 28
GME80905CXC*
GME81155CXC* 21 19.5 33-3/8 28
All dimensions are in inches.

7
PRODUCT DESIGN
* All installas above 7,000 ft. require a pressure switch change.
For installations in Canada, the GME8 furnace is certified only to 4,500 ft.
* Negative pressure readings are in inches of water column (*w.c.)
Part Number 20162903
Open Setting (°F) 160
GME80703BXC* 1
GME80905CXC* 1
GME81155CXC* 1
PRIMARY LIMIT
Part Number B1370145
Open Setting (°F) 300
GME80703BXC* 1
GME80905CXC* 1
GME81155CXC* 1
ROLLOUT LIMIT SWITCHES
MODEL
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
ID BLOWER
PRESSURE
SWITCH
PART #
GME80703BXC* -0.70 B1370158
GME80905CXC* -0.75 B1370179
GME81155CXC* -1.40 B1370156
PRESSURE SWITCH TRIP POINTS
ANDUSAGE CHART
Part Number 0130F00038
Open Setting (°F) 120
GME80703BXC* 1
GME80905CXC* 1
GME81155CXC* 1
AUXILIARY LIMIT SWITCHES

8
PRODUCT DESIGN
Coil Matches:
A large array of Amana®brand coils are available for use with the new GME8 furnaces, in either upflow or horizontal
applications.Thesecoilsareavailableinbothcasedanduncasedmodels(withtheoptionof a field installed TXV expansion
device). These 80% furnaces match up with the existing Amana®brand coils as shown in the chart 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 SlabCoils)
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/ULCS111standards. Installing thisfurnace without filterswill void theunit warranty.
This furnace has provisions for the installation of return air filters at the side and/or bottom return. The furnace will
accommodatethe followingfilter sizes dependingon cabinetsize:
RefertoMinimumFilterAreatablestodeterminefilterarearequirement.NOTE:Filterscanalsobeinstalledelsewherein
the duct system such as a central return.
Upflow Filters
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
Side Return(s) Bottom Return
FURNACE INPUT FILTER SIZE TYPE
45M 160 in2permanent
70M 241 in2permanent
90M 320 in2permanent
115M 400 in2permanent
140M 370 in2permanent
45M 320 in2disposable
70M 483 in2disposable
90M 640 in2disposable
115M 800 in2disposable
140M 738 in2disposable
PERMANENT NOMINAL 600 F.M. FACE VELOCITY
DISPOSABLE NOMINAL 300 F.M. FACE VELOCITY
MINIMUM FILTER SIZES

10
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 factory single-stage operation, adjust the
dipswitches on the ignition control as follows:
Off On
Mode
5 Min Fixed
Auto
Mode Dipswitch
2
nd
Stage Delay Dipswitch
Note: This furnace is designed to be used with a single-stage room
thermostat.
Start Start
Call for Heat Call for Heat
Safety Circuit Check Safety Circuit Check
Start Furnace
in Low Stage
Start Furnace
in Low Stage
Low-Heat Blower Low-Heat Blower
Delay Time (5 Min) Delay Time (1-12 Min)
Gas Valve Switch Gas Valve Switch
to 2nd Stage to 2nd Stage
Blower Switch to Blower Switch to
Hi Heat Operation Hi Heat Operation
T-Stat Satisfied T-Stat Satisfied
•
•
»
»

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 maximum recommended fuse or circuit breaker size. May use fuses or HACR-type circuit breakers of the same 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: Size 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 latesteditions 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 Circuit Ampacity = (1.25 x Circulator Blower Amps) + ID Blower amps. Wire size should be determined in accordance with National Electrical Codes.
Extensive wire runs will require larger wire sizes.
MODEL GME80703BXC* GME80905CXC* GME81155CXC*
Input, Natural Gas (BTUH)(1) 70,000 90,000 115,000
Output, Natural Gas (BTUH)(1) 56,000 72,000 92,000
Output, LP (BTUH) 48,000 64,000 80,000
A.F.U.E. 80.0% 80.0% 80.0%
Rated External Static (" w.c.) .20 - .50 .20 - .50 .20 - .50
Temperature Rise (°F) 20 -50 35 - 65 35 - 65
Pressure Switch Trip Point ("w.c.") -0.60 -0.75 -1.40
Blower Wheel (D" x W") 10 X 8 10 X 10 10 X 10
Blower Horsepower 1/2 1 1
Blower Speeds
Max CFM @ 0.5 E.S.P.
Power Supply 120.0 120.0 120.0
Minimum Circuit Ampacity (MCA)(2) 8.2 14.8 14.8
Maximum Overcurrent Device(3) 15 15 15
Transformer (VA) 40 40 40
Primary Limit Setting (°F) 160 160 160
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) High Stage (" w.c.) 3.5 / 10 3.5 / 10 3.5 / 10
Manifold Pressure (Natural/Propane) Low Stage ("w.c.) 2.0 / 6.0 2.0 / 6.0 2.0 / 6.0
Orifice Size (Natural/Propane) 43 / 55 43 / 55 43 / 55
Number of Burners 3 4 5
Vent Connector Diameter (inches) 4 4 4
Shipping Weight (lbs.) 130 163 167
Refer to airflow charts

BLOWER PERFORMANCE SPECIFICATIONS
12
1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer.
2. All furnaces ship as high speed cooling. Installer must adjust blower cooling speed as needed.
3. For most jobs, about 400 CFM per ton when cooling is desirable.
4. INSTALLATIONISTOBEADJUSTEDTOOBTAINTEMPERATURERISEWITHINTHERANGESPECIFIEDON THERATINGPLATE.
5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded
area indicates ranges in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown for
air conditioning purposes only.
6 The dashed (---) areas indicate a temperature rise not recommended for this model.
7. The above chart is for U.S. furnaces installed at 0-4000 feet. At higher altitudes, a properly derated unit will have approximately the same
temperature rise at a particular CFM, while the ESP at that CFM will be lower.
TonsAC
at 0.5" 0.6 0.7 0.8
ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
T1 2.5 875 59 793 65 736 70 674 77 592 88 556 509 460
T2 3.5 1,032 50 965 54 914 57 861 60 810 64 756 712 659
T3 1.5 1,217 43 1,153 45 1,098 47 1,051 49 1,009 51 964 918 877
T4 3 1,365 38 1,313 39 1,268 41 1,221 42 1,172 44 1,129 1,086 1,054
T5 4 1,549 33 1,505 34 1,460 36 1,420 37 1,378 38 1,350 1,305 1,268
T1 2.5 1,268 53 1,198 56 1,151 58 1,092 61 1,041 64 988 932 883
T2 3.5 1,362 49 1,305 51 1,261 53 1,212 55 1,170 57 1,121 1,074 1,021
T3 3 1,576 42 1,519 44 1,473 45 1,426 47 1,398 48 1,341 1,290 1,252
T4 4 1,755 38 1,711 39 1,657 40 1,627 41 1,579 42 1,548 1,502 1,463
T5 5 2,183 31 2,128 31 2,094 32 2,060 32 2,014 33 1,992 1,944 1,847
T1 3 1,466 58 1,415 60 1,357 63 1,306 65 1,248 68 1,202 1,144 1,088
T2 4 1,642 52 1,596 53 1,552 55 1,499 57 1,449 59 1,388 1,352 1,306
T3 2.5 1,750 49 1,750 49 1,707 50 1,667 51 1,610 53 1,574 1,531 1,486
T4 4 1,870 46 1,805 47 1,782 48 1,737 49 1,701 50 1,656 1,606 1,571
T5 5 2,297 37 2,297 37 2,224 38 2,106 40 2,014 42 1,896 1,813 1,669
BLOWER PERFORMANCE
0.1 0.2 0.3 0.4 0.5
(CFM & Temperature Rise vs. External Static Pressure)
Model
Heating Speed
AsShipped
EXTERNAL STATIC PRESSURE (Inches Water Column)
GME8
1155CXC*
GME8
0905CXC*
GME8
0703BXC*
Motor
Speed
()

BLOWER PERFORMANCE SPECIFICATIONS
13
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

14
WIRING DIAGRAMS
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.
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.
GME8_CA
CAP
BK(HI)
A
UXILIARY
PROPERLY POLARIZED AND GROUNDED.
SERVICING.WIRING TO UNIT MUST BE
WARNING:DISCONNECT POWER BEFORE
XFMR
BK
115V
24V
BR
LIMITS
WH(N)
RD(LOW)
OR(MED LOW)
BL(MED)
BLOWER
CIRCULATOR
24V THERMOSTAT CONNECTIONS
RO2 (11)
GND (8)
HUMIDIFIER
XFMR (6) GND
G
C
W
YTO
MICRO
R
MVL (2)
MVC (9)
PS (10)
PSO (4)
HLI (7)
HLO (1)
CONTROL MODULE
INTEGRATED
NO
SWITCH
PRESSURE
IDBLOWER
VALVE
M1
GAS
C2
C
115 VAC
FLAME SENSOR
FP
XFMR-H
XFMR (3)
RO1 (5)
24VAC
HOT SURFACE
IGNITER
INTEGRATED CONTROL MODULE
BR
BR
IGN
IND
ID
BLWR
CIRCULATOR
BLWR
TRANSFORMER
40VA
XFMR-N
INTEGRATEDCONTROLMODULE
CIR-N
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
ON SOME MODELS
HUMIDIFIER
24VAC
INDUCED DRAFT
°C. USE COPPER CONDUCTORS ONLY.
BLOWER COMPARTMENT
BURNER COMPARTMENT
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR FLOW CHART)
REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE
4. BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION
INTEGRATED CONTROL
INTERNAL TO
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
BLOWER
PRIMARY LIMIT
WH
GR
BK
IGNITER
SURFACE
HOT
PU
RD
15PIN PLUG
C
NO
SWITCH
PRESSURE
BR
SENSOR
FLAME
BK
WH
ROLLOUT LIMITS
RAPID FLASHES = REVERSED 115 VAC POLARITY/VERIFY GND
SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
7 FLASHES = LOW FLAME SIGNAL
5 FLASHES = FLAME SENSE WITHOUT GAS VALVE
4 FLASHES = OPEN HIGH LIMIT
3 FLASHES = PRESSURE SWITCH STUCK OPEN
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
STEADY ON = NORMAL OPERATION
OFF = CONTROL FAILURE
5
1 FLASH =
0
1
2
3
4
PU
6 FLASHES = OPEN ROLLOUT OR OPEN FUSE
COLOR CODES:
PU PURPLE
OR ORANGE
YL YELLOW
6
7
8
BK BLACK
GR GREEN
BR BROWN
PK PINK
RD RED
GYGRAY
BL BLUE
WH WHITE
PU
RATING OF AT LEAST 105
NOTES:
TO 115VAC/ 1Ø /60 HZ POWER SUPPLYWITH
OVERCURRENT
PROTECTION DEVICE
JUNCTION BOX
SWITCH
LINE-H
DOOR
LGND
LINE-N
DISCONNECT
N
SWITCH (TEMP.)
FIELD
SPLICE
SWITCH
(PRESS.)
PROT.
DEVICE
OVERCURRENT
EQUIPMENTGND
TERMINAL
JUNCTION
HI
VOLTAGE FIELD
HI
VOLTAGE (115V)
LOW
VOLTAGE FIELD
LOW
VOLTAGE (24V)
PLUG CONNECTION
IGNITER
FIELDGND
IND-N
IGN-N
JUNCTION
BOX
OVERCURRENT PROTECTION
POWER SUPPLY WITH
TO 115 VAC/ 1/60HZ
GND
LINE-N
LINEH
DEVICE
DOOR SWITCH
WH
BK
SWITCH LOCATED IN BLOWER
COMPARTMENT ON SOME MODELS
RD
RD
BL
PU
YL
OR
BR
(SINGLE CONTROL ON SOME MODELS)
PARK
78
654
CGRWY
5 MIN
2 STG MODE
2
1
3
21
CONTROL MODULE
INTEGRATED
PM
1HIC32
2 STAGE
GAS VALVE
WH
24 VAC
HUMIDIFIER
RD
HI
MVH (12)
A
IR CLEANER
ELECTRONIC EAC-N
EAC-H
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).
WH BL
BR
WH
BL
BK
BK
YL
YL
RD
YL YL
PU
OR
WH
WH
WH
WH
YL
BL
RD
C
8 FLASHES = CHECK IGNITER OR IMPROPER GROUND
9

15
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.
GME8_CB
BK(HI)
AUXILIARY
PROPERLYPOLARIZEDANDGROUNDED.
SERVICING.WIRINGTOUNITMUSTBE
WARNING:DISCONNECTPOWERBEFORE
XFMR
BK
115V
24V
BR
LIMITS
WH(N)
RD(MEDLOW)
OR(MED)
BL(MEDHI)
BLOWER
CIRCULATOR
24VTHERMOSTATCONNECTIONS
RO2(11) LIMIT
GND(8)
HUMIDIFIER
XFMR(6) GND
G
C
W
YTO
MICRO
R
MVL(2)
MVC(9)
AUXILIARY
LIMITCONTROLS
PS(10)
PSO(4)
HLI(7)
HLO(1)
CONTROLMODULE
INTEGRATED
NO
SWITCH
PRESSURE
IDBLOWER
VALVE
M1
GAS
C2
C
AUTORESET
PRIMARY
MANUALRESETROLLOUT
LIMITCONTROL(S)
115VAC
FLAMESENSOR
FP
XFMR-H
XFMR(3)
RO1(5)
24VAC
HOTSURFACE
IGNITER
INTEGRATEDCONTROLMODULE
COOL-H
IGN
IND
ID
BLWR
CIRCULATOR
HEAT-H
BLWR
TRANSFORMER
40VA
CONTROL
XFMR-N
INTEGRATEDCONTROLMODULE
CIR-N
0140F00658 REV.A
ONSOMEMODELS
HUMIDIFIER
24VAC
INDUCEDDRAFT
BLOWERCOMPARTMENT
BURNERCOMPARTMENT
INTEGRATEDCONTROL
INTERNALTO
BLOWER
PRIMARYLIMIT
WH
GR
BK
IGNITER
SURFACE
HOT
PU
RD
15PINPLUG
C
NO
SWITCH
PRESSURE
BR
SENSOR
FLAME
BK
WH
ROLLOUTLIMITS
RAPIDFLASHES=REVERSED115VACPOLARITY/VERIFYGND
SYSTEMLOCKOUT(RETRIES/RECYCLESEXCEEDED)
7FLASHES=LOWFLAMESIGNAL
5FLASHES=FLAMESENSEWITHOUTGASVALVE
4FLASHES=OPENHIGHLIMIT
3FLASHES=PRESSURESWITCHSTUCKOPEN
2FLASHES=PRESSURESWITCHSTUCKCLOSED
STEADYON=NORMALOPERATION
OFF =CONTROLFAILURE
5
1FLASH =
0
1
2
3
4
PU
6FLASHES=OPENROLLOUTOROPENFUSE
COLORCODES:
PUPURPLE
OR ORANGE
YLYELLOW
6
7
8
BKBLACK
GRGREEN
BRBROWN
PKPINK
RD RED
GYGRAY
BLBLUE
WH WHITE
PU
OVERCURRENTPROTECTIONDEVICE
JUNCTIONBOX
MUSTBE
WARNING:
SWITCH
WIRINGTOUNIT
BEFORESERVICING.
DISCONNECTPOWER
LINE-H
DOOR
ANDGROUNDED.
POLARIZED
PROPERLY
LGND
LINE-N
DISCONNECT
N
SWITCH(TEMP.)
FIELDSPLICE
SWITCH(PRESS.)
PROT.DEVICE
OVERCURRENT
EQUIPMENTGND
TERMINAL
JUNCTION
HIVOLTAGEFIELD
HIVOLTAGE(115V)
LOWVOLTAGEFIELD
LOWVOLTAGE(24V)
PLUGCONNECTION
IGNITER
FIELDGND
IND-N
IGN-N
JUNCTION
BOX
OVERCURRENTPROTECTION
POWERSUPPLYWITH
TO115VAC/1/60HZ
GND
LINE-N
LINEH
DEVICE
DOORSWITCH
WH
BK
SWITCHLOCATEDINBLOWER
COMPARTMENTONSOMEMODELS
RD
RD
BL
PU
YL
OR
BR
(SINGLECONTROLONSOMEMODELS)
(SINGLECONTROLONSOMEMODELS)
DIAGNOSTIC
LED LOHEAT-H
PARK
SEENOTE6
COOL-HHIHEAT-H
978
654
12
CGRWY
5MIN
2STG
100SEC
1STG
AUTO
150SEC MODE
2NDSTGDLY
HTOFFDLY
2
1
EAC-HLINE-HXFMR-H
LINENEUTRAL
FS
1110
321
CONTROLMODULE
INTEGRATED
FUSE
PM
1HIC23
2STAGE
GASVALVE
(HONEYWELL)
WH
24VAC
HUMIDIFIER
RD
HI
MVH(12)
HI
LO
HEAT-H
AIRCLEANER
ELECTRONIC EAC-N
EAC-H
WH BL
BR
WH
BL
BK
BK
YL
YL
RD
YL YL
PU
OR
WH
WH
WH
WH
YL
BL
RD
C
8FLASHES=CHECKIGNITERORIMPROPERGROUND
NOTES:
1.SETHEATANTICIPATORONROOMTHERMOSTATAT0.7AMPS.
2.MANUFACTURER'SSPECIFIEDREPLACEMENTPARTSMUSTBEUSEDWHENSERVICING.
3.IFANYOFTHEORIGINALWIREASSUPPLIEDWITHTHEFURNACEMUSTBEREPLACED,ITMUSTBEREPLACEDWITH
WIRINGMATERIALHAVINGATEMPERATURERATINGOFATLEAST105°C.USECOPPER CONDUCTORSONLY.
4.BLOWERSPEEDSSHOULDBEADJUSTEDBYINSTALLERTOMATCHTHEINSTALLATIONREQUIREMENTSSOASTO
PROVIDETHECORRECTHEATINGTEMPERATURERISEANDTHECORRECTCOOLINGCFM.(SEESPECSHEETFORAIR
FLOWCHART)
5.UNITMUSTBEPERMANENTLYGROUNDEDANDCONFORM
TON.E.C.ANDLOCALCODES.
6.TORECALLTHELAST5FAULTS,MOSTRECENTTOLEASTRECENT,DEPRESSSWITCHFORMORETHAN2SECONDS
WHILEINSTANDBY(NOTHERMOSTATINPUTS).
YL(LOW)

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.
.0005
3M K4
K2
HI
HEAT
COOL PARK CIR
NEU
K5
GAS VALVE
HIGH
LIMIT AUX
LIMIT
PRESSURE
SWITCH
FLAME
SENSOR
PROBE
IGNITOR
FP IGN GND MV MLV PS HLO HLI
CIRCULATOR
BLOWER
XFMR
HOT
XFMR
NEU
24 VAC
TH
RO1
RO2
R
TR
C
Y
G
W
COMPRESSOR
CONTACTOR
COIL
THERMOSTAT
R
Y
G
W
INDUCER
IND
ELECTRONIC
AIR CLEANER
EAC EAC
NEU
K6 ROLLOUT
SWITCH
K1
FACTORY
JUMPER
FACTORY
JUMPER
PSO
K2
K3
K3
LO
HEAT
COM
PM
HI
2-STAGE
K7
TYPICALSCHEMATIC
GME8____** MODEL FURNACES
WR50M56-289INTEGRATED IGNITION CONTROL
This schematic is for reference only. Not all wiring is as shown above. Always refer to the appropriate wiring diagram for the unit being serviced.