•Refer to Service ManualRS6610004 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.
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.
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
Brand:
G: Goodman
Air Flow Direction
M:Upflow/Horizontal
D: Dedicated Downflow
C: Downflow/Horizontal
H: Hi Air Flow
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.
2
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.
Goodman will not be responsible
for any injury or property damage
Installation and repair of this unit
WARNING
WARNING
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.
should be performed
viduals meeting the requirements
ONLY by indi-
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.
Serious property damage, personal injury, reduced unit
performance and/or hazardous conditions may result
from the use of such non-approved devices.
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.
WARNING
WARNING
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
damage, personal injury, or death,
3
PRODUCT DESIGN
General Operation
The GCH9 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 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 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
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 suspending the furnace from rafters or joists,
use 3/8" threaded rod and 2” x 2” x 3/8” angle as
shown in the Installation and Service Instructions. The
length of the rod will depend on the application and
clearance necessary.
•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:
1. Installer must supply one or two PVC pipes: one for combustion air (optional) and one for the flue outlet (required).
Vent pipe must be either 2” or 3” in diameter, depending
upon furnace input, number of elbows, length of run and
installation (1 or 2 pipes). The optional Combustion Air
Pipe is dependent on installation/code requirements and
must be 2” or 3” diameter PVC.
2. Line voltage wiring can enter through the right or left side
of the furnace. Low voltage wiring can enter through the
right or left side of furnace.
3. Conversion kits for high altitude natural or propane gas
operation are available. See High Altitude Derate chart
for details.
4. Installer must supply the following gas line fittings, depending on which entrance is used:
Left -- Two 90º Elbows, one close nipple, straight pipe.
Right -- Straight pipe to reach gas valve.
Accessibility Clearances (Minimum)
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
(INCHES)
POSITION* FRONT SIDESREARTOP FLUE FLOOR
Upflow30010C
Horizontal36060C
*= All positioning is determined as installed unit is viewed from the front.
C= If placed on combustible floor, floor MUST be wood only.
NC= For instalaltion on non-combustible floors only. A non-combustible
subbase must be used for installations on combustible flooring.
24" at front is required for servicing or cleaning.
Note: In all cases accessibility clearance shall take prece-
dence over clearances from the enclosure where accessibility clearances are greater. All dimensions are given in inches.
High Altitude Derate
When this furnace is installed at high altitude, the appropriate High Altitude orifice kit must be installed. This is required 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.
MODEL
NUMBER
GCH9*****XA*
1
LPM -03 / LPM-05 supports W hite-Rodgers 2-s tage valves only
2
LPM -06 s uppor ts Honeyw ell and W hite-Rodgers 2 s tage valves
PROPANE AND HIGH ALTITUDE KITS
0 to
7,000 ft.
LPM -03
LPM -05
LPM -06
Propane
Conversion Kit
(#55 Orifices)
1
1
2
High Altitude
Natural Gas Kit
(#44 Orifices)
7,001 to
9,000 ft.
HANG11
9,001 to
11,000 ft.
HANG12
High A ltitud e
Natural Gas Kit
(#45 Orifices)
7,001 to
11,000 ft.
HALP 10
High Altitude
LP Gas Kit
(#56 Orifices)
7,001 to
11,000 ft.
TBD
High altitude kits are purchased according to the installation 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 Natural Gas and Propane Gas kits. For a tabular listing of appropriate 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 Accessory Charts in Service Instructions.
4
COMPONENT IDENTIFICATION
25
20
13
31
18
23
31
24
19
5
26
27
10
11
28
3
15
3
14
29
30
16
17
18
20
19
12
9
7
Downflow /Horizontal
1Two-Stage Gas Valve
2Gas Line Entrance (Alternate)
3Pressure Switch(es)
4Gas Manifold
5Combustion Air Intake Connection
6Hot Surface Igniter
7Rollout Limit
8Burners
9Flame Sensor
10 Flue Pipe Connection
11 Flue Pipe
1 2 Primary Limit
13 Gas Line Entrance
14 Flue Pipe Connection (Alternate)
15 Rubber Elbow
16 Induced Draft Blower
17 Electrical Connection Inlets (Alternate)
18 Coil Front Cover Pressure Tap
2
21
6
8
7
4
19 Coil Front Cover Drain Port
20 Drain Line Penetrations
21 Drain Trap
22 Blower Door Interlock Switch
23 Capicitor
24 Integrated Control Module
Note: Replacement pressure switch number is listed below hig h al titude kit number.
Note: All negative pressure readings are in inches of water column (" w.c.).
A large array of Amana® brand coils are available for use with the GCH9 furnaces, in either counterflow or horizontal
applications. These coils are available in both cased and uncased models (with the option of a field installed TXV expansion
device). These 90%+ furnaces match up with the existing Amana® brand coils as shown in the chart below.
Coil Matches (Goodman® units using R22 and R-410A):
CAPF1824A6A
PRODUCT
TYPE:
C: Indoor Coil
APPLICATION
A: U pflow/Downflow C oil
H: Horizontal A Coil
S: Hor iz ontal Slab Coil
A: Fits 14" Furnace Cabinet
B: Fits 17 1/2" Furnace Cabinet
C: Fits 21" Fu rnace Cabinet
D: Fits 24 1/2" Furnace Cabi net
N : Does Not A pp ly (Horiz onta l S l ab 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 ARI rated with a matched outdoor unit.
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:
Side Return(s)Bottom Return
Cabinet
Width
(in.)
Nominal
Filter Size
(in.)
Approx.
Flow Area
2
)
(in
Cabinet
Width
(in.)
Nominal
Filter Size
(in.)
All16 x 25 x 140017-1/214 x 25 x 1350
2116 x 25 x 1400
24-1/220 x 25 x 1500
Approx.
Flow Area
2
)
(in
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.
BTUH Output (US) LP38,50257,75357,75377,00477,00496,255
A.F.U.E.939393939393
Rated External Static (" w.c.) .20" - .50" .20" - .50" .20" - .50" .20" - .50" .20" - .50" .20" - .50"
Temperatur e Rise (°F) 35-65 35-65 35-65 35-65 35-65 35-65
Pressure Switch Trip Point (" w. c .)-0.60-0.60-0.37-0.60-0.37-0.60
Front Cover Pressure Switch Trip Point (" w.c)-0.60-0.60-0.37-0.60-0.37-0.60
Blower Wheel (D" x W")10 X 810 X 810 X 1010 X 1011 X 1011 x 10
Blower Horsepower1/31/31/21/23/43/4
Blower Speeds 444444
Max CFM @ 0.5 E.S.P.1,2001,2001,600160020002000
Power Supply115-60-1115-60-1115-60-1115-60-1115-60-1115-60-1
Minimum Circuit Ampacity (MCA)
Maximum Overcurrent Device
Transfor mer (VA)404040404040
Primary Limit Setting (°F)170170170150170155
Auxiliary Limit Setting ( ° F)160160170160170160
Rollout Limit Setting (°F)210210210220220210
Fan Delay On Heating 303030303030
Off Heating
Fan Delay On Cooling 555555
Off Cooling 454545454545
Fan Delay On - Fan Only 000000
Gas Supply Pressure (Natural/Propane) (" w.c.)7/117/117/117/117/117/11
Manifold Pressure (Natural/ P ropane) 3.5/10 3.5/10 3.5/10 3.5/10 3.5/10 3.5/10
Orifice Size (Natural/Propane)43/5543/5543/5543/5543/5543/5 5
Number of Burners233445
Vent Connector Diameter (inches)
Shipping Weight (lbs.)132135136158172178
(3)
(1)
(2)
(4)
9.409.4013.8013.8013.2013.20
151515151515
150150150150150150
222222
GCH9
(1)
Wire size should be determined in accordance with National Electrical Codes. Extensive wire runs will require larger wire sizes.
(2)
Maximum Overcurrent Protection Device: May use Time Delay Fuse or HACR type Circuit Breaker of the same size as noted.
(3)
Off Heating - this fan delay timing is adjustable (100 or 150 seconds), 150 seconds as shipped.
(4)
See Installation Instructions for appropriate vent diameter, length and number of elbows.
NOTE: This data is provided as a guide, it is important to electrically connect the unit and properly size fuses/circuit breakers and wires in
accordance with all national and/or local electrical codes. Use copper wire only.
1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane operation.
2. For elevations above 2000 feet the rating should be reduced by 4% for each 1000 feet above sea level. The furnace must not be derated, orifice changes should only
be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufacturers method or 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.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
Unit specifications are subject to change without notice.
ALWAYS refer to the units serial plate for the most up-to-date general and electrical information.
12
BLOWER PERFORMANCE SPECIFICATIONS
BLOWER PERFORMANCE
(CFM & Temperature Rise vs. External Static Pressure)
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. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
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.
6The 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.
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT P ARTS 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 MA TERIAL
HAVING A TEMPERATURE RA TING OF AT LEAST 105
4. IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME, DISCARD JUMPER BEFORE CONNECTING BLOWER LEADS. UNUSED
BLOWER LEADS MUST BE PLACED ON "PARK" TERMINALS OF INTEGRATED CONTROL OR T APED.
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 FO R MORE THAN 2 SECONDS WHILE IN
STANDBY (NO THERMOSTAT INPUTS)
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)
C
BK
24V THERMOSTAT CONNECTIONS
BK
G
TO
Y
GY
PU
GY
MICRO
W
R
TH (3)
XFMR-H
INTEGRATED CONTROL MODULE
GR
YL
RD
OR
BL
OR
BR
OR
LINE-H
DOOR
SWITCH
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
AND GROUNDED.
TO 115VAC/ 1
OVERCURRENT PROTECTION DEVICE
JUNCTION
BL
BOX
GY
WH
GR
FLAME
SENSOR
BK
LOW VOLTAGE (24V)
LOW VOLTAGE FIELD
HI VOLTAGE (115V)
HI VOLTAGE FIELD
JUNCTION
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
PLUG CONNECTION
°C. USE COPPER CONDUCTORS ONLY .
HUMIDIFIER
TR (6)
GND (8)
MVC (9)
MVH (12)
UXILIARY LIMIT CONTROLS
MVL(2)
PS (10
PSO (4
HLI (7)
HLO (1)
UTO RESET PRIMARY
LIMIT CONTROL
RO2 (11)
RO1 (5)
MANUAL RESET ROLLOUT
LIMIT CONTROL(S)
SINGLE CONTROL ON 45K BTU
24 VAC
115 VAC
FLAME SENSOR
FS
HOT SURFACE
IGN
IND
EAC-H
IGNITER
ID
BLWR
L
O
H
E
A
T
-
H
COOL-H
CIRCULATOR
BLWR
I
H
H
-
T
A
E
H
ELECTRONIC
IR CLEANER
JUNCTION BOX
GND
LN
Ø /60 HZ POWER SUPPLY WITH
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
DISCONNECT
INTEGRATED
CONTROL MODULE
GND
NO
FRONT COVER
PRESSURE SWITCH
C
40 VA
TRANSFORMER
DISCONNECT
N
GND
L
EQUIPMENT GND
FIELD GND
FIELD SPLICE
SWITCH (TEMP.)
IGNITER
SWITCH (PRESS.)
OVERCURRENT
PROT. DEVICE
C
HI
VALVE
PM
ID BLOWER
PRESSURE
SWITCH
GAS
C
NO
INTEGRATED CONTROL MODULE
LINE NEUTRALS
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
16
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