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TECHNICAL MANU AL
GMH95
40" 95% Gas Furnace
• 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.
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.
Copyright © 2007, 2009-2010 Goodman Manufacturing Company, L.P.
C
®
US
RT6612018 Rev. 5
April 2010
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 M H 95 045
Brand:
G: Goodman
3 A X A A
Minior
Revision
A: Revision
Air Flow Direction
M:Upflow/Horizontal
D: Dedicated Downflow
C: Downflow/Horizontal
H: Hi Air Flow
Description
H: Dual$aver, Multi Speed
V: Two Stage/Variable Speed
Major Revision
A: Initial Release
NOx
N: Natural Gas
X: Low NOx
AFUE
9: 90%
95: 95%
KBTUH
045: 45,000
070: 70,000
090: 90,000
115: 115,000
140: 140,000
Cabinet Width
A: 14"
B: 17 1/2"
C: 21"
D: 24 1/2"
Maximum CFM @ 0.5" ESP
3: 1200
4: 1600
5: 2000
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 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.
GMH950453BXA*
GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
GMH950905DXA*
GMH951155DXA*
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
PRODUCT DESIGN
General Operation
The GMH95 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
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 SIDES REAR TOP FLUE FLOOR
Upflow 3 0 0 1 0 C
Horizontal 3 6 0 6 0 C
*= 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 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 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.
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.
M ODEL
NUM BER
GM H9 5 * * * * *X A*
P RO P AN E A ND HIG H A L T IT UD E K IT S
0 to 7 ,0 0 1 to 9 ,0 0 1 to
7 ,0 0 0 ft.
9 ,0 0 0 ft.
1 1 ,0 0 0 ft.
LP M -0 5 1
LP M -0 6
2
P ro p a n e
C o n ve rs io n K it
(# 5 5 O rific e s )
HANG1 1
H ig h Altitu d e
N a tu ra l Ga s K it
(# 4 4 O rifice s )
HANG1 2
H ig h Altitu d e
N a tu ra l G a s K it
(# 4 5 Orifice s )
1
LP M -05* s upports W hite-R odgers 2-s tage valves only
2
LP M -06* s upports H oney well and W hite-R odgers 2-s tage valves
7 ,0 0 1 to
1 1 ,0 0 0 ft.
HALP 1 0
H ig h Altitu d e
L P Ga s K it
(# 5 6 Orifice s )
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 Ac-
cessory Charts in Service Instructions.
4
COMPONENT IDENTIFICATION
Upflow/Horizontal
1 Gas Valve
2 Gas Line Entrance (Alternate)
3 Pressure Switch
4 Gas Manifold
5 Combustion Air Intake Connection / “Coupling”
6 Hot Surface Igniter
7 Rollout Limit
8 Burners
9 Flame Sensor
10 Flue Pipe Connection / “Coupling”
11 Flue Pipe (Internal)
12 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
19 Coil Front Cover Drain Port
20 Drain Line Penetrations
21 Drain Trap
22 Blower Door Interlock Switch
23 Capacitor
24 Integrated Control Module
(with fuse and diagnostic LED)
25 24-Volt Thermostat Connections
26 Transformer (40 VA)
27 Circulator Blower
28 Auxiliary Limit
29 Junction Box
30 Electrical Connection Inlets
31 Coil Front Cover
5
COMPONENT IDENTIFICATION
GMH95*****XA*
AIR
DISCHARGE
AIR
INTAKE
PIPE
2" PVC
1 1/2
2
1 5/8
1 UNFOLDED FLANGES
FOLDED FLANGES
UNFOLDED FLANGES
FOLDED FLANGES
AIR
DISCHARGE
RIGHT SIDE
DRAIN LINE
HOLES
RIGHT SIDE VIEW
Cabinet Size A
GMH950453BXA*
GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
17-1/2
21
GMH950905DXA*
GMH951155DXA*
24-1/2
All dimensions are in inches.
B
16
23
C
12-15/16
19-1/2 15-15/16
20-7/16
D
12-1/8
16
19-3/8
E
13-5/8
17-1/2
20-7/8
Note: Airflow area will be reduced by approximately 18% if duct flanges are not unfolded. This could cause performance issues and noise issues.
6
PRODUCT DESIGN
MODEL
PRESSURE SWITCH TRIP POINTS AND USAGE CHART
NEGATIVE
PRESSURE
ID BLOWER
WITH FLUE
NOT FIRING
TYPICAL
SEA
LEVEL
DATA
(1)
NEGATIVE
PRESSURE
ID BLOWER
WITH FLUE
FIRING
TYPICAL
SEA
LEVE
DATA
(2)
NEGATIVE
PRESSURE
COIL COVER
WITH FLUE
NOT FIRING
TYPICAL
SEA
LEVEL
DATA
(1)
NEGATIVE
PRESSURE
COIL COVER
WITH FLUE
FIRING
TYPICAL
SEA
LEVE
DATA
(2)
PRESSURE SWITCH TRIP POINTS AND USAGE
0 to 7,000 ft.
TRIP POINT
COIL COVER
PRESSURE
SWITCH
COIL COVER
PRESSURE
SWITCH
PART #
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
ID BLOWER
PRESSURE
SWITCH
PART #
TRIP POINT
COIL COVER
PRESSURE
SWITCH
7,001 to 11,000 ft.
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
HIGH
ALTITUDE KIT
GMH950453BXA* -1.30
-1.10
-0.52
-0.37
-0.37
20197312 -1.10
0130F00000P TBD TBD TBD
GMH950703BXA* -1.10
GMH950704CXA* -1.30
GMH950904CXA* -1.40
GMH950905DXA* -1.30
-0.95
-1.10
-1.20
-1.10
-0.52
-0.52
-0.75
-0.52
-0.37
-0.37
-0.60
-0.37
-0.37
-0.37
-0.60
-0.37
20197312
20197312
20197310
20197312
-0.95
0130F00002P
-1.10
0130F00000P
-1.20
0130F00001P
-1.10
0130F00000P
GMH951155DXA* -1.30
-1.10
-0.75
-0.60
-0.60
20197310
(1) Data given is least negative pressure required for pressure switch to close.
(2) Data given is the least negative pressure required for pressure switch to remain closed.
-1.10
0130F00000P
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
T.O.D. PRIMARY LIMIT
Part Number
Open Setting (°F)
GMH950453BXA*
GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
GMH950905DXA*
GMH951155DXA*
20162903 20162904
160 150
1
1
1
1
1
1
7
8
PRODUCT DESIGN
Part Num ber
Open Setting (°F)
GMH950453BXA*
GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
GMH950905DXA*
GMH951155DXA*
ROLLOUT LIMIT SW ITCHES
10123514 or 10123533
200
1
2
2
2
2
2
AUXILIARY LIMIT SWITCHES
10123535 10123519 Part Number
Open Setting (°F)
GMH950453BXA*
GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
GMH950905DXA*
GMH951155DXA*
150
1
1
1
1
1
160
1
PRODUCT DESIGN
Coil Matches:
A large array of Amana ® brand coils are available for use with the GMH95 furnaces, in either upflow or horizontal applications. These coils are available in both cased and uncased models (with the option of a field installed TXV expansion device). These 95%+ 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):
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 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:
Cabinet
Width
(in.)
All
SIDE RETURN
Nominal
Filter Size
(in.)
16 x 25 x 1
Approx.
Flow Area
(in
2
)
400
Cabinet
Width
(in.)
BOTTOM RETURN
(1)
Nominal
Filter Size
(in.)
Approx.
Flow Area
(in
2
)
17-1/2 14 x 25 x 1 350
21
24-1/2
16 x 25 x 1
20 x 25 x 1
400
500
(1) Flanges on bottom return must be unfolded
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.
0453BXA*
0703BXA*
0704CXA*
0904CXA*
0905DXA*
1155DXA*
600
388*
---
---
---
---
---
COOLING AIRFLOW REQUIREMENT (CFM)
800
388*
647*
---
---
---
---
1000
480
647*
583*
863*
---
---
1200
576
647*
583*
863*
777*
971*
1400
---
672
672
863*
777*
971*
1600
---
---
768
863*
777*
971*
2000
---
---
---
---
960
971*
*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter Area (in
2
)
[Based on a 300 ft/min filter face velocity]
COOLING AIRFLOW REQUIREMENT (CFM)
600 800
0453BXA* 194* 194*
0703BXA*
0704CXA*
---
---
324*
---
1000
240
324*
291*
1200
288
324*
291*
1400
---
336
336
1600
---
---
384
2000
---
---
---
0904CXA*
0905DXA*
1155DXA*
---
---
---
---
---
---
432*
---
---
432*
388*
486*
432*
388*
486*
432*
388*
486*
---
480
486*
*Minimum filter area dictated by heating airflow requirement.
Permanent Minimum Filter Area (in
2
)
[Based on 600 ft/min filter face velocity]
10
FURNACE SPECIFICATIONS
GMH95
0453BXA*
MODEL
Btuh
Input (US)
Output (US)
Input (CAN)
Output (CAN)
A.F.U.E.
Rated External Static (" w.c.)
Temperature Rise (°F)
ID Blower Pressure Switch Trip Point (" w.c.)
Front Cover Pressure Switch Trip Point (" w.c.)
Blower Wheel (D" x W")
Blower Horsepower
Blower Speeds
Max CFM @ 0.5 E.S.P.
Power Supply
Minimum Circuit Ampacity (MCA)
(1)
Maximum Overcurrent Device
(2)
Transformer (VA)
Primary Limit Setting (°F)
Auxiliary Limit Setting (°F)
Rollout Limit Setting (°F)
Fan Delay On Heating
Off Heating
(3)
Fan Delay On Cooling
Off Cooling
Gas Supply Pressure (Natural/Propane) ("w.c.)
Manifold Pressure (Natural/Propane) ("w.c.)
Orifice Size (Natural/Propane)
Number of Burners
Vent Connector Diameter (inches)
(4)
Combustion Air Connector Diameter (inches)
(5)
Shipping Weight (lbs.)
46,000
44,400
46,000
44,400
95.0%
.20 - .50
35 - 65
-1.10
-0.37
10 x 8
1/3
4
1200
115-60-1
9.4
15.0
40
150
150
200
30 secs.
150 secs.
6 sec.
45 secs.
7 / 11
3.5 / 10
43 / 55
2
2
2
132
GMH95
0703BXA*
GMH95
0704CXA*
69,000
66,400
69,000
66,400
95.0%
.20 - .50
30 - 60
-0.95
-0.37
10 x 8
1/3
4
1200
115-60-1
9.4
15.0
40
160
150
200
30 secs.
150 secs.
6 sec.
45 secs.
7 / 11
3.5 / 10
43 / 55
3
2
2
135
69,000
66,900
69,000
66,900
95.0%
.20 - .50
35 - 65
-1.10
-0.37
10 x 10
1/2
4
1600
115-60-1
13.8
15.0
40
160
150
200
30 secs.
150 secs.
6 sec.
45 secs.
7 / 11
3.5 / 10
43 / 55
3
2
2
136
GMH95
0904CXA*
GMH95
GMH95
0905DXA*
GMH95
1155DXA*
92,000
89,000
92,000
89,000
95.0%
.20 - .50
30 - 60
-1.20
-0.60
10 x 10
1/2
4
1600
115-60-1
13.8
15.0
40
150
150
200
30 secs.
150 secs.
6 sec.
45 secs.
7 / 11
3.5 / 10
43 / 55
4
2
2
158
92,000
88,400
92,000
89,400
95.0%
.20 - .50
35 - 65
-1.10
-0.37
11 x 10
3/4
4
2000
115-60-1
13.2
15.0
40
160
150
200
30 secs.
150 secs.
6 sec.
45 secs.
7 / 11
3.5 / 10
43 / 55
4
2
2
172
115,000
110,500
115,000
110,500
95.0%
.20 - .50
35 - 65
-1.10
-0.60
11 x 10
3/4
4
2000
115-60-1
13.2
15.0
40
160
160
200
30 secs.
150 secs.
6 sec.
45 secs.
7 / 11
3.5 / 10
43 / 55
5
2
2
175
(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 and 150 seconds). Furnaces are shipped with 150 second off delay.
(4) See Installation Instructions for appropriate vent diameter, length and number of elbows.
(5) See Installation Instructions for appropriate combustion air pipe 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.
11
BLOWER PERFORMANCE SPECIFICATIONS
Model
(
Heating Speed
)
As Shipped
GMH950453BXA*
(MED-HI)
GMH950703BXA*
(MED-HI)
GMH950704CXA*
(MED-HI)
GMH950904CXA*
(MED-HI)
GMH950905DXA*
(MED-HI)
GMH951155DXA*
(MED-HI)
Motor
Speed
BLOWER PERFORMANCE
(CFM & Temperature Rise vs. External Static Pressure)
Tons AC EXTERNAL STATIC PRESSURE (Inches Water Column) at 0.5" 0.1
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
HIGH 3.0
MED 2.5
1352 29 1318 30 1260 31 1202 33 1128 35 1044 955 853
1214 32 1172 34 1123 35 1064 37 1012 39 938 859 741
MED-LO 2.0
LOW
HIGH
MED
MED-LO
LOW
1.5
3.0
2.5
2.0
1.5
997 40 994 40 960 41 923 43 884 45 817 741 611
757 52 753 52 734 54 704 56 674 59 620 524 438
1449 41 1409 42 1326 45 1273 47 1201 49 1194 1136 1018
1192 50 1172 51 1141 52 1094 54 1046 57 973 904 793
981 61 962 62 943 63 917 65 888 67 830 764 665
750 79 730 81 714 83 692 86 657 90 620 570 502
HIGH
MED
MED-LO
LOW
HIGH 4.0
MED 3.5
MED-LO
LOW
HIGH
MED 4.0
MED-LO 3.5
LOW
HIGH
MED 4.0
MED-LO 3.5
LOW
4.0
3.5
3.0
2.5
3.0
2.5
5.0
3.0
5.0
3.0
2069 29 1965 30 1871 32 1756 34 1661 36 1549 1415 1275
1752 34 1724 34 1667 36 1603 37 1488 40 1402 1290 1082
1437 41 1437 41 1417 42 1369 43 1320 45 1256 1140 984
1184 50 1177 50 1161 51 1132 52 1095 54 1047 928 837
1970 40 1874 342 1757 45 1667 48 1566 51 1431 1334 1182
1713 46 1650 48 1572 50 1510 52 1418 56 1313 1211 1079
1439 55 1412 56 1370 58 1327 60 1260 63 1166 1078 956
1183 67 1155 69 1122 74 1108 72 1062 75 1011 931 816
2147 37 2114 37 2057 39 2030 39 1978 40 1889 1784 1713
1675 47 1686 47 1640 48 1623 49 1557 51 1501 1455 1360
1489 53 1470 54 1436 55 1409 56 1361 58 1318 1243 1130
1307 61 1265 63 1234 64 1203 66 1168 68 1096 1053 991
2134 46 2103 47 2029 48 1941 51 1906 51 1818 1733 1625
1678 58 1643 60 1643 60 1577 62 1527 64 1489 1423 1339
1453 68 1440 68 1426 69 1363 72 1349 73 1314 1253 1205
1259 78 1239 79 1220 80 1181 83 1159 85 1118 1082 1015
1.
CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the furnace requires two return filters, this chart assumes both filters are installed.
2.
All furnaces ship as high speed cooling and medium-speed heating. Installer must adjust blower cooling & heating 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.
6.
The above chart is for U.S. furnaces installed at 0-2000 feet. At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.
12
BLOWER PERFORMANCE SPECIFICATIONS
E RIS RE ATU PER TEM
13
WIRING DIAGRAMS GMH95[0453,0704,0905]*XAB
GMH95[0703,0904,1155]*XAC
24 VAC
HUMIDIFIER
24 VAC
24V THERMOSTAT
CONNECTIONS
C G R
115 VAC
W Y
BK
FUSE
OR
WH
3 2
12
11
GY
1
OR
PK
OR
BL
YL
GR
GY
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)
C
G
Y
W
TO
MICRO
TR (6)
GND (8)
MVC (9)
MVH (12)
HUMIDIFIER
GND
MVL(2)
NO
FRONT COVER
PRESSURE SWITCH
C
PS (10) C
PSO (4)
HLI (7)
HLO (1)
INTEGRATED
CONTROL MODULE
C
HI
GAS
VALVE
PM
ID BLOWER
PRESSURE
SWITCH
NO
INTEGRATED
CONTROL
MODULE
ON OFF
2ND
STAGE
DELAY *
MODE *
HEAT
FACTORY
OFF
DELAY
SETTINGS
*
SHOWN
FS
6
9
5
8
4
7
10
GY
OR
OR
RD
GY
WH
OR
BR
R
TH (3)
RO2 (11)
RO1 (5)
24 VAC
40 VA
TRANSFORMER
XFMR-H 115 VAC
FLAME SENSOR
GND
DIAGNOSTIC
LED
*
SEE
NOTE 6
115 VAC HOT AND PARK TERMINALS
COOL-H HEAT-H
SEE
NOTE 4
LINE-H
WH
2
1
BK
WH
FS
IGN
HOT SURFACE
IGNITER
HE
LO
AT
-H
ID
BLWR
BR
BR
CAPACITOR
BK (HI)
BL (MED)
OR
RD
(MED
(LOW)
LOW)
BLOWER COMPARTMENT
BURNER COMPARTMENT
GND
RD
BK
PK
YL
PU
MANUAL RESET
AUXILIARY LIMITS
(1) IN UPFLOW
BLOW ER DECK
(2) IN C'FLOW
BLOW ER HOUSING
WH
IND
EAC-H
LINE-H
DOOR
SWITCH
COOL-H
HI
HE
AT
-H
CIRCULATOR
BLWR
ELECTRONIC
AIR CLEANER
JUNCTION BOX
BK
WH
INDUCED
BLOWER
DRAFT
DISCONNECT
WH
PU
BL
RD OR
N
O
C
YL
OR
TO 115VAC/ 1Ø
L
/60
GND
HZ
N
POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
WH
PK RD
ID BLOWER
PRESSURE
SWITCH
24 VAC
HUMIDIFIER
2
3
BR
GAS VALVE
BL
JUNCTION
BOX
2 CIRCUIT
CONNECTOR
PM
HOT
SURFACE
IGNITER
C
HI
1 GY
C
OR
N
O
FRONT COVER
PRESSURE SWITCH
GY
GND GR
FLAME
SENSOR
WH
BK
N
GND
L
0
1
2
3
4
5
6
STEADY ON = NORMAL OPERATION
OFF
1 FLASH
2 FLASHES
3 FLASHES
4
5
6
FLASHES
FLASHES
FLASHES
= CONTROL FAILURE
=
= LOW FLAME SIGNAL
=
=
PRESSURE
PRESSURE
SWITCH STUCK
SWITCH STUCK
=
=
=
OPEN HIGH
FLAME
LIMIT
SENSE WITHOUT
CLOSED
OPEN
GAS VALVE
LOW
LOW
HI
VOLTAGE (24V)
VOLTAGE
VOLTAGE
FIELD
(115V)
HI VOLTAGE FIELD
JUNCTION
TERMINAL
EQUIPMENT GND
FIELD GND
FIELD SPLICE
SWITCH (TEMP.)
IGNITER
7
8
7 FLASHES
8 FLASHES = CHECK IGNITER OR IMPROPER GROUNDING
INTERNAL
INTEGRATED
TO
CONTROL
SWITCH (PRESS.)
OVERCURRENT
PROT.
DEVICE
PU PURPLE
GN
BK
GREEN
BLACK
PK PINK
VAC POLARITY
PLUG CONNECTION
C CONTINUOUS/RAPID FLASHES = REVERSED 115
COLOR CODES:
YL YELLOW
OR ORANGE
BR BROWN
WH WHITE
BL
GY
BLUE
GRAY
RD RED
NOTES:
1.
2.
SET HEAT ANTICIPATOR
MANUFACTURER'S
ON ROOM
SPECIFIED
THERMOSTAT
REPLACEMENT
AT
PARTS
3.
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH
0.7
THE
AMPS.
MUST BE USED
FURNACE
WHEN
BE
SERVICING.
REPLACED, IT MUST
HAVING A TEMPERATURE RATING OF AT LEAST 105 °C.
USE COPPER CONDUCTORS ONLY.
BE REPLACED WITH WIRING MATERIAL
4.
IF HEATING
5.
BLOWER
UNIT
LEADS
MUST
AND COOLING
BE
MUST BE
BLOWER
PLACED
PERMANENTLY
SPEEDS
ON
ARE
GROUNDED AND
NOT THE
CONFORM
SAME, DISCARD JUMPER BEFORE CONNECTING BLOWER LEADS. UNUSED
"PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.
TO N.E.C.
AND LOCAL CODES.
0140F00592 REV.
A
6. TO RECALL THE LAST 5 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS SWITCH FOR MORE THAN 2 SECONDS
STANDBY (NO THERMOSTAT INPUTS)
WHILE IN
Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.
14
WIRING DIAGRAMS GMH95[0453,0704,0905]*XAC
GMH95[0703,0904,1155]*XAD
24 VAC
HUMIDIFIER
24 VAC
115 VAC
24V THERMOSTAT
CONNECTIONS
C G R W Y
FUSE
INTEGRATED
CONTROL
MODULE
ON OFF
2ND
STAGE
DELAY *
MODE *
HEAT
OFF
DELAY
* FACTORY SETTINGS
SHOW N
*
BK
OR
WH
GY
40 VA
TRANSFORMER
3 2
6 5
9 8 7
12 11 10
1
4
GY
OR
OR
RD
GY
OR
PK
OR
BL
YL
GR
OR
BR
GY
BLOWER
COMPARTMENT
DOOR SW ITCH
(OPEN WHEN
DOOR OPEN)
C
G
Y
W
R
TO
MICRO
TH (3)
HUMIDIFIER
TR (6)
GND (8)
MVC (9)
MVH (12)
GND
MVL(2)
NO
FRONT COVER
PRESSURE SWITCH
C
PS (10)
PSO (4)
HLI (7)
C
HLO (1)
RO2 (11)
C
HI
PM
ID BLOWER
PRESSURE
SWITCH
NO
GAS
VALVE
MANUAL RESET AUXILIARY
LIMIT CONTROLS
AUTO RESET
PRIMARY
LIMIT
CONTROL
RO1 (5)
INTEGRATED
CONTROL MODULE
MANUAL RESET ROLLOUT
LIMIT CONTROL(S)
(SINGLE CONTROL ON 45K BTU)
24 VAC
40 VA
TRANSFORMER
WH
FS
XFMR-H 115 VAC
FLAME SENSOR
GND
DIAGNOSTIC
LED
SEE
NOTE 6
115 VAC HOT AND PARK TERMINALS
COOL-H HEAT-H
LINE-H
SEE
NOTE 4
WH
BR
BR
2
1
BK (HI)
BL (MED)
OR (MED LOW)
RD (LOW)
CIRCULATOR
BLOWER
RD
BK
BK
PK
WH FS
IGN
IND
HOT SURFACE
IGNITER
HE
LO
AT-H
ID
BLWR
YL
COOL-H
HI
HE
AT
-H
CIRCULATOR
BLWR
CAPACITOR
BLOWER COMPARTMENT
BURNER COMPARTMENT
GND
COLOR CODES:
YL YELLOW
OR ORANGE
PU PURPLE
GN GREEN
BK BLACK
BK
WH
INDUCED DRAFT
BLOWER
AUTO RESET
PRIMARY LIMIT
CONTROL
PK PINK
BR BROWN
WH WHITE
BL BLUE
GY GRAY
RD RED
0140F00663 REV. A
MANUAL RESET
AUXILIARY LIMITS
(1) IN UPFLOW
BLOWER DECK
(2) IN C'FLOW
BLOWER HOUSING
WH
WH
BL
PU
PU
YL
RD OR OR
N
O
C
PK RD
WH
ID BLOWER
PRESSURE
SWITCH
2 CIRCUIT
CONNECTOR
HOT
SURFACE
IGNITER
MANUAL RESET ROLLOUT LIMIT CONTROL(S)
( SINGLE CONTROL ON 45K BTU )
24 VAC
HUMIDIFIER
FRONT COVER
PRESSURE SWITCH
PM
1 GY
C
N
O GY
GND GR
C
HI
3
2
BR
OR
GAS VALVE (HONEY WELL)
0 STEADY ON = NORMAL OPERATION
OFF = CONTROL FAILURE
1 1 FLASH = SYSTEM LOCKOUT (RETRIES EXCEEDED)
2 2 FLASHES = PRESSURE SWITCH STUCK CLOSED
3 3 FLASHES = PRESSURE SWITCH STUCK OPEN
4 4 FLASHES = OPEN HIGH LIMIT
5 5 FLASHES = FLAME SENSE WITHOUT GAS VALVE
6 6 FLASHES = OPEN ROLLOUT OR OPEN FUSE
7 7 FLASHES = LOW FLAME SIGNAL
8 8 FLASHES = CHECK IGNITER OR IMPROPER GROUNDING
C CONTINUOUS/RAPID FLASHES = REVERSED 115 VAC POLARITY
BL
FLAME
SENSOR
WH
BK
EAC-H
LINE-H
DOOR
SWITCH
ELECTRONIC
AIR CLEANER
JUNCTION BOX
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
DISCONNECT
PROPERLY
POLARIZED
AND GROUNDED.
L GND N
TO 115VAC/ 1 Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
JUNCTION
BOX
LOW VOLTAGE (24V)
LOW VOLTAGE FIELD
HI VOLTAGE (115V)
HI VOLTAGE FIELD
JUNCTION
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
PLUG CONNECTION
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
DISCONNECT
N
GND
L
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. 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 TAPED.
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.
15
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