Goodman Mfg GMH95 User Manual

TECHNICAL MANUTECHNICAL MANU

TECHNICAL MANU

TECHNICAL MANUTECHNICAL MANU

ALAL

AL

ALAL

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

RT6612018 Rev. 5

US

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

Brand:

G: Goodman

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

M

H

AFUE

9: 90%

95: 95%

KBTUH

045: 45,000
070: 70,000
090: 90,000
115: 115,000
140: 140,000

95

045

3

Maximum CFM @ 0.5" ESP

3: 1200
4: 1600
5: 2000

A

XA

NOx

N: Natural Gas
X: Low NOx

Cabinet Width

A: 14"
B: 17 1/2"
C: 21"
D: 24 1/2"

A

Minior
Revision

A: Revision

Major Revision

A: Initial Release

WARNING

WARNING

WARNING

WARNING

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.

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

2

Installation and repair of this unit

WARNING

WARNING

ments 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
individuals meeting the require-

ONLY by

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*

WARNING

WARNING

WARNING

WARNING

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 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

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 SIDES REAR TOP FLUE FLOOR

Upflow30010C

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 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

GMH95*****XA*

1

LPM -05* supports White-Rodgers 2-stage valves only

2

LPM -06* supports Honeywell and W hite-Rodgers 2-stage valves

PRO PAN E AND HIGH ALT ITUDE KIT S

0 to

7,000 ft.
LPM-05

LPM-06

Propane

Conversion Kit

(#55 Orifices)

1
2

High Altitude

Natural Gas Kit

(#44 Orifices)

7,001 to

9,000 ft.

HANG11

High Altitude

Natural Gas Kit

(#45 O rifice s)

9,001 to

11,000 ft.

HANG12

7,001 to

11,000 ft.

HALP 10

High Altitude

LP Gas Kit

(#56 Orifices)

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

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)
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
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
2 8 Auxiliary Limit
29 Junction Box
30 Electrical Connection Inlets
31 Coil Front Cover

5

COMPONENT IDENTIFICATION

A

GMH95*****XA*

1 5/8

1 1/2

AIR

DISCHARGE

AIR

INTAKE

PIPE

2" PVC

2

1

UNFOLDED FLANGES

FOLDED FLANGES

UNFOLDED FLANGES

FOLDED FLANGES

IR

DISCHARGE

RIGHT SIDE
DRAIN LINE

HOLES

RIGHT SIDE VIEW

Cabinet Size A B C D E

GMH950453BXA*
GMH950703BXA*

GMH950704CXA*
GMH950904CXA*

GMH950905DXA*
GMH951155DXA*

17-1/2

21

24-1/2

16

19-1/2

23

12-15/16

15-15/16

20-7/16

12-1/8

16

19-3/8

13-5/8

17-1/2

20-7/8

All dimensions are in inches.

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

PRESSURE SWITCH TRIP POINTS AND USAGE CHART

NEGATIVE

PRESSURE

ID BLOWER

WITH FLUE

MODEL

GMH950453BXA* -1.30 -1.10 -0.52 -0.37 -0.37 20197312 -1.10 0130F00000P TBD TBD TBD

NOT FIRING

TYPICAL

SEA

LEVEL
DATA

(1)

NEGATIVE

PRESSURE

ID BLOWER

WITH FLU E

FIRING

TYPICAL

SEA

LEVE

(2)

DATA

NEGATIVE

PRESSURE

COIL COVER

WITH FLUE

NOT FIRING

TYPICAL

SEA

LEVEL

(1)

DATA

NEGATIVE

PRESSURE

COIL COVER

WITH FLUE

FIRING

TYPICAL

SEA

LEVE

(2)

DATA

TRIP POINT

COIL COVER

PRESSURE

SWITCH

COIL COVER

PRESSURE

SWITCH

PRESSURE SWITCH TRIP P OI NT S AND USAGE

0 to 7,000 ft.

ID BLOWER

PRESSURE

SWITCH

PART #

PART #

TRIP POINT
ID BLOWER
PRESSURE

SWITCH

TRIP POINT

COIL COVER

PRESSURE

SWITCH

7,001 to 11,000 ft.

TRIP POINT
ID BLOWER

PRESSURE

SWITCH

ALTITUDE KIT

HIGH

GMH950703BXA*

GMH950704CXA* -1.30 -1.10 -0.52 -0.37 -0.37 20197312 -1.10 0130F00000P TBD TBD TBD

GMH950904CXA* -1.40 -1.20 -0.75 -0.60 -0.60 20197310 -1.20 0130F00001P TBD TBD TBD

GMH950905DXA*

GMH951155DXA* -1.30 -1.10 -0.75 -0.60 -0.60 20197310 -1.10 0130F00000P TBD TBD TBD

-1.10 -0.95 -0.52 -0.37 -0.37 20197312 -0.95 0130F00002P TBD TBD TBD

-1.30 -1.10 -0.52 -0.37 -0.37 20197312 -1.10 0130F00000P TBD TBD TBD

(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.

T.O.D. PRIMARY LIMIT

Part Number 20162903 20162904

Open Setting (°F)
GMH950453BXA*

160 150

1

GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
GMH950905DXA*
GMH951155DXA*

1
1

1
1
1

7

PRODUCT DESIGN

Part Number 10123514 o r 10123 533

ROLLOUT LIMIT SWITCHES

Open Setting (°F)

GMH950453BXA*
GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
GMH950905DXA*
GMH951155DXA*

AUXILI ARY LIMIT SW ITCHES

Part Number 10123535 10123519

Open Setting (°F)

GMH950453BXA*
GMH950703BXA*
GMH950704CXA*
GMH950904CXA*
GMH950905DXA*
GMH951155DXA*

200

1
2
2
2
2
2

150 160

1
1
1
1
1

1

8

PRODUCT DESIGN

r

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

A PPLICATION

A : U pfl o w/Do w nflow C oil
H: Horizontal A Coil
S: Horizontal Slab Coil

EXPANSIO N
DEVICE:

F: Flowrate

CAB I NET FINISH:

U: Unp ai nted
P: P a inted
N: Unp ai nted Ca s e

N OMINAL CAP A CI T Y RA N GE
@ 13 SEER

1824: 1 1/2 to 2 Ton s
3030: 2 1/2 To ns
3636: 3 Tons
3642: 3 to 3 1/2 Ton s
3743: 3 to 3 1/2 Ton s
4860: 4 & 5 Ton s
4961: 4 & 5 Ton s

REVISI O N

A : Revision

REFRIGERANT
CHARGE:

6: R-41 0A or R-22
2: R-22
4: R-410a

NOM INAL WI DTH FO R G AS F URNACE

A: Fits 14" F ur nace Cabine t
B: Fits 17 1/2" Furnace Cabinet
C: Fi ts 21" Furnace Cabinet
D: Fi ts 24 1/2" Furnace Cabi net
N: Do es Not A ppl y (Hori z on ta l Slab Coi ls)

• 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:

(1)

Approx.

Flow Area

2

in

Cabinet

Width

(in.)

SIDE RETURN

Nominal

Filter Size

(in.)

Approx.

Flow Area

2

in

BOTTOM RETURN

Cabinet

Width

Filter Size

(in.)

Nominal

(in.)

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

(1) Flanges on botto m return must be un f o l ded

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.

COOLING AIRFLOW REQUIR EMENT (CFM)

600 800 1000 1200 1400 1600 2000

0453BXA* 388* 388* 480 5 76 --- --- --­0703BXA* --- 647* 647* 647* 672 --- --­0704CXA* --- --- 583* 583* 672 768 --­0904CXA* --- --- 863* 863* 863* 863* ---

Input__Airflow

0905DXA* --- --- --- 777* 777* 777* 960
1155DXA* --- --- --- 971* 971* 971* 971*

0453BXA* 194* 194* 240 288 --- --- --­0703BXA* --- 324* 324* 324* 336 --- --­0704CXA* --- --- 291* 291* 336 384 --­0904CXA* --- --- 432* 432* 432* 432* ---

Input__Airflow

0905DXA* --- --- --- 388* 388* 388* 480
1155DXA* --- --- --- 486* 486* 486* 486*

COOLING AIRF L OW REQU I R EMEN T (CFM)

600 800 1000 1200 1400 1600 2000

*Minimum filter area dictated by heating airflow requirement.

Disposable Minimum Filter Area (in2)

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

*Minimum filter area dictated by heating airflow requirement.

Permanent Minimum Filter Area (in2)

[Based on 600 ft/min filter face velocity]

10

FURNACE SPECIFICATIONS

GMH95

MODEL

GMH95

0453BXA*

GMH95

0703BXA*

GMH95

0704CXA*

GMH95

0904CXA*

GMH95

0905DXA*

GMH95

1155DXA*

Btuh
Input (US) 46,000 69,000 69,000 92,000 92,000 115,000

Output (US) 44,400 66,400 66,900 89,000 88,400 110,500
Input (CAN) 46,000 69,000 69,000 92,000 92,000 115,000
Output (CAN) 44,400 66,400 66,900 89,000 89,400 110,500
A.F.U.E. 95.0% 95.0% 95.0% 95.0% 95.0% 95.0%
Rated External Static (" w.c.) .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50
Temperature Rise (°F) 35 - 65 30 - 60 35 - 65 30 - 60 35 - 65 35 - 65
ID Blower Pressure Switch Trip Point (" w.c.) -1.10 -0.95 -1.10 -1.20 -1.10 -1.10
Front Cover Pressure Switch Trip Point (" w.c.) -0.37 -0.37 -0.37 -0.60 -0.37 -0.60
Blower Wheel (D" x W") 10 x 8 10 x 8 10 x 10 10 x 10 11 x 10 11 x 10
Blower Horsepower 1/3 1/3 1/2 1/2 3/4 3/4
Blower Speeds 4 4 4 4 4 4
Max CFM @ 0.5 E.S.P. 1200 1200 1600 1600 2000 2000
Power Supply 115-60-1 115-60-1 115-60-1 115-60-1 115-60-1 115-60-1
Minimum Circuit Ampacity (MCA)
Maximum Overcurrent Device

(2)

(1)

9.4 9.4 13.8 13.8 13.2 13.2

15.0 15.0 15.0 15.0 15.0 15.0
Transformer (VA) 40 40 40 40 40 40
Primary Limit Setting (°F) 150 160 160 150 160 160
Auxiliary Limit Setting (°F) 150 150 150 150 150 160
Rollout Limit Setting (°F) 200 200 200 200 200 200
Fan Delay On Heating 30 secs. 30 secs. 30 secs. 30 secs. 30 secs. 30 secs.
Off Heating

(3)

150 secs. 150 secs. 150 secs. 150 secs. 150 secs. 150 secs.
Fan Delay On Cooling 6 sec. 6 sec. 6 sec. 6 sec. 6 sec. 6 sec.
Off Cooling 45 secs. 45 secs. 45 secs. 45 secs. 45 secs. 45 secs.
Gas Supply Pressure (Natural/Propane) ("w.c.) 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11
Manifold Pressure (Natural/Propane) ("w.c.) 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10
Orifice Size (Natural/Propane) 43 / 55 43 / 55 43 / 55 43 / 55 43 / 55 43 / 55
Number of Burners 2 3 3 4 4 5
Vent Connector Diameter (inches)

(4)

Combustion Air Connector Diameter (inches)

(5)

222222
222222

Shipping Weight (lbs.) 132 135 136 158 172 175

(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

BLOWER PERFORMANCE

(CFM & Temperature Rise vs. External Static Pressure)

Model

Motor

Heating Speed

()

As Shipped

Speed

Tons AC

at 0.5" 0.6 0.7 0.8

0.1 0.2 0.3 0.4 0.5

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

EXTERNAL STATIC PRESSURE (Inches Water Column)

HIGH 3.0

GMH950453BXA* MED 2.5

(MED-HI) MED-LO 2.0

LOW 1.5

HIGH 3.0

GMH950703BXA* MED 2.5

(MED-HI) MED-LO 2.0

LOW 1.5

HIGH 4.0

GMH950704CXA* MED 3.5

(MED-HI) MED-LO 3.0

LOW 2.5

HIGH 4.0

GMH950904CXA* MED 3.5

(MED-HI) MED-LO 3.0

LOW 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

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
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

HIGH 5.0

GMH950905DXA* MED 4.0

(MED-HI) MED-LO 3.5

LOW 3.0

HIGH 5.0

GMH951155DXA* MED 4.0

(MED-HI) MED-LO 3.5

LOW 3.0

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.

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

12

BLOWER PERFORMANCE SPECIFICATIONS

÷ CFM

130 140 150

BTU OUTPUT vs TEMPERATURE RISE CHART

700

800

BTU OUTPUT = CFM x 1.08 x RISE

1.08

BTU OUTPUT

RISE =

FORMULAS

100

2400 CFM

2200

2000

1800

1600

1400

1200

1100

1000

900

OUTPUT BTU/HR x 1000

600 CFM

30 40 50 60 70 80 90 110 120

100

90

80

70

60

50

40

30

20

10

TEMPERATURE RISE

13

WIRING DIAGRAMS

2

4

V

A

H

U

M

I

D

I

F

2

V

4

1

1

V

2

4

V

T

H

E

R

M

O

C

O

N

N

E

C

T

I

O

D
L

D

N

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B

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B

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C

B

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T

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N

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A

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ON

OFF

2ND
STAGE
DELAY

MODE

HEAT
OFF
DELAY

F

S

A

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T

C

T

O

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R

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S

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H

W

N

SEE

I

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NOTE 6

E

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1

1

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5

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A

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2 C

I

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C

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C

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H

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S

U

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F

I

N

I

T

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

0

Y

A

D

S

T

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F

F

1

1 F

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2 F

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2

9

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

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GMH95[0453,0704,0905]*XAB
GMH95[0703,0904,1155]*XAC

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6. TO RECALL THE LAST 5 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN
STANDBY

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115 VAC NEUTRAL

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INTEGRATED CONTROL MODULE

LINE NEUTRALS

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14

WIRING DIAGRAMS

A

GMH95[0453,0704,0905]*XAC
GMH95[0703,0904,1155]*XAD

BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)

C

BK

BK

G

TO

Y

GY

MICRO

W

R

TH (3)

XFMR-H

PK

GR

RD

YL

GY

BL

OR

BR

24V THERMOSTAT

CONNECTIONS

DIAGNOSTIC
LED

115 VAC HOT AND PARK TERMINALS

GND

BR

BR

24 VAC

HUMIDIFIER

24 VAC

115 VAC

R

CG W

FUSE

INTEGRATED

CONTROL

MODULE

ON

OFF

FACTORY SETTIN G S

*

SHOWN

HEAT-H

COOL-H

SEE
NOTE 4

WH

BK (HI)
BL (MED)
OR (MED LOW)
RD (LOW)

Y

BK

2ND
STAGE
DELAY

*

MODE

*

HEAT
OFF
DELAY

*

XFMR-H

SEE
NOTE 6

CIRCULATOR

BLOWER

LINE-H

OR

40 VA
TRANSFORMER

WH

65

98

121110

GY

OR

FS

2

1

RD

BK

GY

OR

123

PK

4

OR

7

BL

GR

YL

OR

OR

BR

RD

GY

TERMINALS

WH

WH

BK

PK

YL

WH

WH

CAPACITOR

WH

PU

BL

FRONT COVER
PRESSURE SWITCH

N
O

GND

OR

PU

LINE-H

DOOR
SWITCH

WARNING:

DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
AND GROUNDED.

TO 115VAC/ 1

RD

BL

GY

OVERCURRENT PROTECTION DEVICE

JUNCTION
BOX

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.

BLOWER COMPART MEN T

BURNER COMPARTMENT

GND

BK

WH WH

INDU CE D DRAFT
BLOWER

AUTO RESET
PRIMARY LIMIT
CONTROL

RD

OR

N
O

WH

ID BLOWER
PRESSURE
SWITCH

2 CIRCUIT
CONNECTOR

HOT
SURFACE

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.

IGNITER

0

STEADY ON = NORMAL OPERATION

OFF = CONTROL FAILURE

1

1 FLASH =
2 FLASHES = PRESSURE SWITCH STUCK CLOSED

2

3 FLASHES = PRESSURE SWITCH STUCK OPEN

3

4

4 FLASHES = OPEN HIGH LIMIT

5

5 FLASHES = FLAME SENSE WITHOUT GAS VALVE

6 FLASHES =

6

7 FLASHES = LOW FLAME SIGNAL

7

8

8 FLASHES = CHECK IGNITER OR IMPROPER GROUNDING

C

CONTINUOUS/RAPID FLASHES = REVERSED 115 VAC POLARITY

COLOR CODES:

YL YELL O W
OR ORANGE
PU PURPLE
GN GREE N
BK BLACK

SYSTEM LOCKOUT (RETRIES EXCEEDED)

OPEN ROLLOUT OR OPEN FUSE

YL

C

MANUAL RESET ROLLOUT LIMIT CONTROL(S)

24 VAC

HUMIDIFIER

1

PM

3

C

2

HI

PK PINK
BR BROWN
WH WHITE
BL BLUE
GY GRAY
RD RED

0140F00663 REV. A

MANUA L RESET
AUXILIARY L IMI TS
(1) IN UPFLOW
BLOWER DECK
(2) IN C'FLOW
BLOWER HOUSING

OR

PK

( SINGLE CONTROL ON 45K BTU )

C

GY

BR

GAS VALVE (HONEY WELL)

NOTES:

1. SE T H EAT A NT ICIPATO R ON R OO M TH ER MOS TAT AT 0 .7 AM PS .

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

4. IF HEATING A ND CO O LIN G 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)

HUMIDIFIER

TR (6)

GND (8)

MVC (9)
MVH (12)

MVL( 2)

NO

FRONT COVER
PRESSURE SWITCH

PS (10)
PSO (4)
HLI (7)

HLO (1)

MANUAL RESET AUXILIARY
LIMIT CONTROLS

RO2 (11)

RO1 (5)

MANUAL RESET ROLLOUT
LIMIT CONTROL(S)
(SINGLE CONTROL ON 45K BTU)

24 VAC

115 VA C

FLAME SENSOR

FS

HOT SURFACE

IGNITER

IGN

ID

IND

EAC-H

BLWR

L

O

H

E

A

T

-

H

COOL-H

CIRCULATOR

BLWR

I

H

H

-

T

A

E

H

ELECTRONIC
AIR 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

INTEGR ATED
CONTROL MODULE

GND

C

C

40 VA
TRANSFORMER

DISCONNECT

N

GND

L

EQUIPMENT GND

FIELD GND

FIELD SPLICE

SWITCH (TEMP.)

IGNITER

SWITCH (PRESS.)

OVERCURRENT

PROT. DEVICE

C

GAS

HI

VALV E

PM

ID BLOWER
PRESSURE

SWITCH

NO

AUTO RESET
PRIMARY
LIMIT
CONTROL

INTE G RATED CONTROL MODULE

TO 115 V

OVERCURRENT PROTECTION

DEVICE

POWER SUPPLY WITH

C / 1Ø / 60 HZ

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

15