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GOODMAN GDH80403A*A Series Service manual
The GOODMAN GDH80403AA Series is a high-efficiency gas furnace designed for dedicated downflow applications. It features a two-stage burner system and a multi-speed blower motor for precise temperature control and energy savings. The furnace also includes a self-diagnosing electronic control module that alerts you to any potential problems. With its compact size and quiet operation, the GOODMAN GDH80403AA Series is an ideal choice for any home.
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TECHNICAL MANU
AL
GDH8 33-3/8" 80% Gas Furnace
80% AFUE, 2-Stage (Convertible),
Multi-Speed, Dedicated Downflow
•
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.
C
®
US
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.
Copy right © 2011, 2013 Goodman Manufacturing Comp any, L.P.
RT6621022r2
March 2013
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 D H 8 060 3 A X A A
BRAND:
G: Goodman
Brand
®
FURNACE
TYPE
H: Two-Stage/
Multi-speed
AIRFLOW DIRECTION
D: Dedicated Downflow
AFUE:
8: 80%
A* Revisions
NOMINAL INPUT:
040: 45,000 Btuh
060: 70,000 Btuh
080: 90,000 Btuh
100: 115,000 Btuh
B* Revisions
NOMINAL INPUT:
040: 40,000 Btuh
060: 60,000 Btuh
080: 80,000 Btuh
100: 100,000 Btuh
MAJOR
REVISION:
AIRFLOW
CAPABILITY:
3: 1200
4: 1600
5: 2000
ADDITIONAL
FEATURES:
N: Natural Gas
X: Low NOx
CABINET WIDTH:
A: 14"
B: 17 1/2"
C: 21"
MINOR
REVISION:
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.
2
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.
GDH80403A*A*
GDH80603A*A*
GDH80804B*A*
GDH81005C*A*
GDH80403A*B*
GDH80603A*B*
GDH80804B*B*
GDH81005C*B*
*Models are available in Natural Gas and low NOx.
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
4
PRODUCT DESIGN
General Operation
The GDH8 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 inner blower door is not in place. Keep the blower access door in place except for inspection and maintenance. (See illustra-
tion on page 5.)
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
NFPA 54/ANSI Z223.1 - latest edition. In Canada, the furnaces must be vented in accordance with the National Standard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2
- latest editions and amendments.
NOTE: The vertical height of the Category I venting system must be at least as great as the horizontal length of the venting system.
Accessibility Clearances (Minimum)
Unobstructed front clearance of 24" for servicing is recommended.
MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS - INCHES
Vent
Sides Rear Front* Top
1 0 3
SW
6
B
1 1
* 24" clearance for serviceability recommended.
** Single Wall Vent (SW) to be used only as a connector.
Refer to the venting tables outlined in the Installation Manual for
additional venting requirements.
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 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:
WARNING
T
O PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION,
THIS FURNACE MUST BE
C
ATEGORY
I
VENTED.
D
O NOT VENT USING
C
ATEGORY
III
VENTING.
High Altitude Derate
IMPORTANT NOTE: The furnace as shipped requires no change to run between 0 - 4500 feet. Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure below 4500 feet. This can cause poor combustion and equipment failure.
High altitude installations above 4500 feet may require both a pressure switch and an orifice change. These changes are necessary to compensate for the natural reduction in the density of both the gas fuel and the combustion air at higher altitude.
For installations above 4500 feet, please refer to your distributor for required kit(s). Contact the distributor for a tabular listing of appropriate manufacturer’s kits for propane gas and/or high altitude installations. The indicated kits must be used to insure safe and proper furnace operation. All conversions must be performed by a qualified installer, or service agency.
Category I Venting is venting at a non-positive pressure. A furnace vented as Category I is considered a fan-assisted appliance and the vent system does not have to be “gas tight.” NOTE: Single stage gas furnaces with induced draft blowers draw products of combustion through a heat exchanger allowing, 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
PRODUCT DIMENSIONS
GDH8
A
B
28”
High Voltage
Electrical
Low Voltage
Electrical
Gas Inlet
33-3/8”
MODEL
GDH80403A***
GDH80603A***
GDH80804B***
GDH81005C***
A
14
17 1/2
21
B
NON-COMBUSTIBLE
FLOOR BASE
SBT14 12 1/2
16 SBT17
19 1/2 SBT21
All dimensions are in inches.
5
6
PRODUCT DESIGN
MODEL
GDH80403A*A*
PRESSU RE SWITCH
PART
NO.
B1370142
B1370158
GDH80603A*A*
GDH80804B*A*
B1370142
OPENS*
-0.60
-0.70
-0.60
GDH81005C*A*
B1370158 -0.70
*Negative pressure readings are in inches of water column (in *w.c.)
GDH8***A*
Part Number
Open Setting (°F)
GDH80403A*A*
GDH80603A*A*
GDH80804B*A*
GDH81005C*A*
PRIMARY LIMIT
0130F00035
220
1
1
---
---
0130F00036
180
---
---
1
1
ROLLOUT LIMIT SWITCHES
Part Number
Open Setting (°F)
GDH80403A***
GDH80603A***
GDH80804B***
GDH81005C***
10123529
300
1
1
1
1
AUXILIARY LIMIT SWITCHES
Part N umber
Open Setting (°F)
GDH80403A***
GDH80603A***
GDH80804B***
GDH81005C***
0130F00038
120
1
1
1
1
PRODUCT DESIGN
MODEL
GDH80403A*B*
PRESSU RE SWITCH
PART
NO.
B1370142
B1370142
GDH80603A*B*
GDH80804B*B*
B1370142
OPENS*
-0.60
-0.60
-0.60
GDH81005C*B*
0130F00042 -0.80
*Negative pressure readings are in inches of water column (in *w.c.)
GDH8***B*
Part Number
Open Setting (°F)
GDH80403A*B*
GDH80603A*B*
GDH80804B*B*
GDH81005C*B*
PRIMARY LIMIT
0130F00036
180
1
1
1
---
20162901
210
---
---
---
1
ROLLOUT LIMIT SWITCHES
Part Number
Open Setting (°F)
GDH80403A***
GDH80603A***
GDH80804B***
GDH81005C***
10123529
300
1
1
1
1
AUXILIARY LIMIT SWITCHES
Part N umber
Open Setting (°F)
GDH80403A***
GDH80603A***
GDH80804B***
GDH81005C***
0130F00038
120
1
1
1
1
7
8
PRODUCT DESIGN
Coil Matches:
A large array of Goodman
® brand coils are available for use with the GDH8 furnaces, in dedicated downflow applications.
These coils are available in both cased and uncased models (with the option of a field installed TXV expansion device).
These 80% furnaces match up with the existing Goodman
®
brand coils as shown in the chart below.
Coil Matches (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 AHRI rated with a matched outdoor unit.
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
MINIMUM FILTER SIZES for DISPOSABLE FILTERS
FURNACE INPUT
40M
60M
80M
100M
FILTER SIZE
320 in
2
483 in
2
640 in
2
800 in
2
DI SPOSABLE NOMINAL 300 F.M. FACE VELOCI TY
9
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 factor single-stage operation, adjust the dipswitches on the ignition control as follows:
HEAT OFF
DELAY
SECOND
DELAY
MODE 2-STAGE
SECOND
DELAY
1-STAGE
SECOND
STAGE
ONLY
AUTO
*
Switches for White-Rodgers board shown above
With other venders, order of switches may vary
but functionality stays the same.
Note: This furnace is designed to be used
with a single-stage thermostat.
Start Start
Call for Heat
Safety Circuit Check
Call for Heat
Safety Circuit Check
Start Furnace in Low Stage
Low-Heat Blower
Delay Time (5 Min)
Gas Valve Switch to 2nd Stage
Blower Switch to
Hi Heat Operation
T-Stat Satisfied
Start Furnace in Low Stage
Low-Heat Blower
Delay Time (1-12 Min)
Gas Valve Switch to 2nd Stage
Blower Switch to
Hi Heat Operation
T-Stat Satisfied
10
FURNACE SPECIFICATIONS
MODEL
Btuh Input (US) High Fire
(1)
Output (US) High Fire
A.F.U.E.
(2)
Rated External Static (" w.c.)
Temperature Rise (°F)
Pressure Switch Trip Point (" w.c.)
Blower Wheel (D" x W")
Blower Horsepower
Blower Speeds
Available AC @ 0.5” ESP
Power Supply
Minimum Circuit Ampacity (MCA)
(4)
Maximum Overcurrent Device
(5)
Transformer (VA)
Heat Anticipator (Amps)
Primary Limit Setting (°F)
Auxiliary Limit Setting (°F)
Rollout Limit Setting (°F)
Gas Supply Pressure (Natural/Propane) (" w.c.)
Manifold Pressure (Natural/Propane) High Stage (" w.c.)
Orifice Size (Natural/Propane)
Number of Burners
Vent Connector Diameter (inches)
(3)
Shipping Weight (lbs.)
GDH80403A*A*
45,000
36,000
80%
.20 - .50
35-65
-0.60
10 X 6
1/3
4
3
115-60-1
8.5
15
40
0.7
220
120
300
7 / 11
3.5 / 10
#43 / #55
2
4
88
GDH80603A***
70,000
56,000
80%
.20 - .50
30-60
-0.70
10 X 6
1/3
4
3
115-60-1
8.5
15
40
0.7
220
120
300
7 / 11
3.5 / 10
#43 / #55
3
4
92
GDH80804B*A*
90,000
72,000
80%
.20 - .50
35-65
-0.60
10 X 8
1/2
4
4
115-60-1
12.9
15
40
0.7
180
120
300
7 / 11
3.5 /10
#43 / #55
4
4
106
GDH8***A*
GDH81005C*A*
115,000
92,000
80%
.20 - .50
40-70
-0.70
10 X 10
3/4
4
5
115-60-1
12.9
15
40
0.7
180
120
300
7 / 11
3.5 /10
#43 / #55
5
4
114
1 Natural Gas BTU/h. For altitudes above 2,000’, reduce input rating 4% f or each 1,000’ above sea level.
2 DOE AFUE based upon Isolated Combustion S ystem (I CS)
3 Vent and combustion air diameters may vary depending upon vent length.
Ref er to the latest editions of the National Fuel Gas Code NFPA 54/ ANSI Z223.1 (in the US A) and the Canada National Standard of Canada, CAN/CSA B149. 1
and CA N/CSA B142. 2 (in Ca
4 Minimum Circuit Ampacity = (1.25 x Circulat or Blower Amps) + I D Blower amps. Wire size should be determined in accordance with National Elect rical Codes.
Extens ive wire runs will require larger wire sizes.
5 Maximum Overcurrent Protection Device refers to maximum recommended fuse or circ uit breaker size. May use fuses or HACR-type circuit breakers of the same s ize as noted.
Notes:
• All furnaces are manufactured f or use on 115 VAC, 60 Hz, single-phase elect rical supply.
• Gas Service Connection ½” FP T
• I mportant: Size fuses and wires properly and make electrical connections in ac cordance wit h t he National Electrical Code and/ or all exis ting local codes.
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.
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.
11
FURNACE SPECIFICATIONS
MODEL
Btuh Input (US) High Fire
Output (US) High F ire
A.F.U.E.
(1)
Rated External Static (" w.c.)
T emperature Rise (°F)
Pressure Switch Trip Point (" w.c.)
Blower Wheel (D" x W")
Blower Horsepower
Blower Speeds
Available AC @ 0.5” ESP
Power Supply
Minimum Circuit Ampacity (MCA)
(3)
Maximum Overcurrent Device
(4)
T ransformer (VA)
Heat Anticipator (Amps)
Primary Limit Setting (°F)
Auxiliary Limit Setting (°F)
Rollout Limit Setting (°F)
Gas Supply Pressure (Natural/Propane) (" w.c.)
Manifold Pressure (Natural/Propane) High Stage (" w.c.)
Orifice Size (Natural/Propane)
Number of Burners
Vent Connector Diameter (inches)
(2)
Shipping Weight (lbs.)
GDH80403 A*B*
40
0.7
180
120
300
7 / 11
3.5 / 10
#45 / #55
2
4
88
40,000
32,000
80%
.20 - .50
25-55
-0.60
10 X 6
1/3
4
3
115-60-1
8.5
15
GDH80603A*B*
40
0.7
180
120
300
7 / 11
3.5 / 10
#45 / #55
3
4
92
60,000
48,000
80%
.20 - .50
30-60
-0.60
10 X 6
1/3
4
3
115-60-1
8.5
15
GDH80804B*B*
40
0.7
180
120
300
7 / 11
3.5 /10
#45 / #55
4
4
106
80,000
64,000
80%
.20 - .50
35-65
-0.60
10 X 8
1/2
4
4
115-60-1
12.9
15
GDH8***B*
GDH81005C*B*
40
0.7
210
120
300
7 / 11
3.5 /10
#45 / #55
5
4
114
100,000
80,000
80%
.20 - .50
40-70
-0.80
10 X 10
3/4
4
5
115-60-1
12.9
15
1 DOE AFUE based upon Isolated Combustion System (I CS)
2 Vent and combustion air diameters may vary depending upon vent length.
Ref er to the latest editions 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 Ca
3 Minimum Circuit Ampacity = (1.25 x Circulator Blower Amps) + I D Blower amps. Wire size should be det ermined in accordance with National Elect rical Codes.
Ext ens ive wire runs will require larger wire sizes.
4 Maximum Overcurrent Protection Device refers to maximum recommended fuse or circ uit breaker size. May use fuses or HACR-type circuit breakers of the same s ize as noted.
Notes:
• All furnaces are manufactured f or use on 115 VAC, 60 Hz, single-phase elect rical supply.
• G as Service Connect ion ½” FPT
• Important : Size fuses and wires properly and make electrical connections in ac cordance wit h t he National Elect rical Code and/ or all exis ting local codes.
NOTES:
* These furnaces are manufactured for natural gas operation. Optional Kits are available for conversion to propane gas operation.
* 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.
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.
12
BLOWER PERFORMANCE SPECIFICATIONS
Model
GDH8
0403A*A*
GDH8
0603A*A*
GDH8
0804B*A*
GDH8
1005C*A*
GDH8***A*
4.0
3.5
3.0
2.5
5.0
4.0
2.5
2.0
1.5
3.5
3.0
Med
Med-Lo
Low
Hi gh
Med
Med-Lo
Low
Hi gh
Med
Med-Lo
Low
BLOWER PERFORMANCE
(CFM & Temperature Rise vs. External Static Pressure)
Tons AC
Motor
Speed at 0.5"
0.1
EXTERNAL STATIC PRESSURE (Inches Water Column)
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
Hi gh 3.0
1 ,353 25 1,290 26 1,246 27 1,199 28 1,149 29 1,116 1,11 6 1,099
Med
Med-Lo
Low
Hi gh
2.5
2.0
1.5
3.0
1 ,183 28 1,113 30 1,098 30 1,052 32 1,039 32 1,006 1,01 2 969
980 34 9 46 35 920 36 900 37 896 37 885 855 804
778 43 7 62 44 738 45 746 45 738 45 717 696 678
1 ,290 40 1,236 42 1,194 43 1,166 44 1,176 44 1,166 1,10 8 1,029
1 ,139 46 1,090 48 1,035 50 1,063 49 1,063 49 1020 962 895
962 54 9 27 56 925 56 941 55 909 57 877 834 779
787 66 7 76 67 763 68 744 70 723 72 690 641 581
2 ,128 31 2,063 32 2,001 33 1,927 35 1,824 37 1,726 1,62 8 1,529
1 ,840 36 1,788 37 1,745 38 1,689 39 1,625 41 1,550 1,47 0 1,364
1 ,602 42 1,558 43 1,543 43 1,493 45 1,455 46 1,402 1,32 8 1,239
1 ,277 52 1,252 53 1,244 54 1,229 54 1,214 55 1,179 1141 1079
2 ,405 35 2,361 36 2,250 38 2,161 39 2,037 42 1,937 1,80 8 1,689
1 ,880 45 1,838 46 1,794 47 1,734 49 1,677 51 1,568 1,51 0 1,401
1659 51 1,630 52 1,587 54 1,537 55 1,492 57 1,445 1,36 8 1,287
1 ,472 58 1,454 59 1,404 61 1,366 62 1,326 64 1300 1228 1139
NOTES:
• CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer.
• All furnaces ship as high-speed cooling. Installer must adjust blower cooling speed as needed.
• For most jobs, about 400 CFM per ton when cooling is desirable
• INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
• The chart is for information only. For satisfactory operation, external static pressure must not exceed values shown on the rating plate. The shaded area indicates ranges in excess of maximum static pressure allowed when heating.
• The dashed (- - -) areas indicate a temperature rise not recommended for this model.
• At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while ESP at the CFM will be lower.
13
BLOWER PERFORMANCE SPECIFICATIONS
Model
GDH8
0403A*B*
GDH8***B*
BLOWER PERFORMANCE
(CFM & Temperature Rise vs. External Static Pressure)
Tons AC
Motor
Speed at 0.5"
ESP
0.1
EXTERNAL STATIC PRESSURE (Inches Water Column)
0.2
0.3
0.4
0.5
0.6
0.7
0.8
CFM RISE CF M RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
Hi gh 3.0
1 ,353 ---1,290 ---1,246 ---1,199 25 1,149 26 1,116 1,11 6 1,099
Med 2.5
1 ,183 25 1,113 27 1,098 27 1,052 28 1,039 29 1,006 1,01 2 969
Med-Lo
Low
Hi gh
2.0
1.5
3.0
980 30 9 46 31 920 32 900 33 896 33 885 855 804
778 38 7 62 39 738 40 746 40 738 40 717 696 678
1 ,290 34 1,236 36 1,194 37 1,166 38 1,176 38 1,166 1,10 8 1,029
GDH8
0603A*B*
Med
Med-Lo
Low
2.5
2.0
1.5
1 ,139 39 1,090 41 1,035 43 1,063 42 1,063 42 1,020 962 895
962 46 9 27 48 925 48 941 47 909 49 877 834 779
787 56 7 76 57 763 58 744 60 723 ---690 641 581
GDH8
0804B*B*
GDH8
1005C*B*
Hi gh
Med
Med-Lo
Low
Hi gh
Med
Med-Lo
Low
2.5
5.0
4.0
4.0
3.5
3.0
3.5
3.0
2 ,128 ---2,063 ---2,001 ---1,927 ---1,824 ---1,726 1,62 8 1,529
1 ,840 ---1,788 ---1,745 ---1,689 35 1,625 36 1,550 1,47 0 1,364
1 ,602 37 1,558 38 1,543 38 1,493 40 1,455 41 1,402 1,32 8 1,239
1 ,277 46 1,252 47 1,244 48 1,229 48 1,214 49 1,179 1,14 1 1,079
2 ,405 ---2,361 ---2,250 ---2,161 ----2,037 36 1,937 1,80 8 1,689
1 ,880 39 1,838 40 1,794 41 1,734 43 1,677 44 1,568 1,51 0 1,401
1 ,659 45 1,630 45 1,587 47 1,537 48 1,492 50 1,445 1,36 8 1,287
1 ,472 50 1,454 51 1,404 53 1,366 54 1,326 56 1,300 1,22 8 1,139
NOTES:
• CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer.
• All furnaces ship as high-speed cooling. Installer must adjust blower cooling speed as needed.
• For most jobs, about 400 CFM per ton when cooling is desirable
• INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
• The chart is for information only. For satisfactory operation, external static pressure must not exceed values shown on the rating plate. The shaded area indicates ranges in excess of maximum static pressure allowed when heating.
• The dashed (- - -) areas indicate a temperature rise not recommended for this model.
• At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a particular CFM, while ESP at the CFM will be lower.
14
BLOWER PERFORMANCE SPECIFICATIONS
ISE E R UR RAT PE TEM
15
WIRING DIAGRAM
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
24 VAC
HUMIDIFIER
C G
10 11
7 8
12
9
4
1
5
2
6
3
R W Y
AUTO
1 STG
150 SEC
5 MIN
2 STG
100 SEC
D S
TG
DL
Y
2N
MODE
HT O
FF D
LY
WH
BL
FUSE
SEE NOTE 6
BR
INTEGRATED
CONTROL MODULE
RD
BL
FS
2
1
XFMR-H LINE-H EAC-H
AUXILIARY
LIMITS
BR
C
G
Y
W
R
HUMIDIFIER
INTEGRATED
CONTROL MODULE
XFMR (6)
GND
GND (8)
MVC (9)
MVH (12)
MVL (2)
AUXILIARY
LIMIT CONTROLS
C
C2
HI
GAS
VALVE
M1
ID BLOWER
PRESSURE
SWITCH
NO
PS (10)
PSO (4)
TO
MICRO HLI (7)
HLO (1)
RO2 (11)
AUTO RESET
PRIMARY
LIMIT
CONTROL
XFMR (3)
RO1 (5)
MANUAL RESET ROLLOUT
LIMIT CONTROL(S)
(SINGLE CONTROL ON SOME MODELS)
24 VAC
40 VA
TRANSFORMER
XFMR-H 115 VAC
FLAME SENSOR
XFMR-N
FP
HOT SURFACE
IGNITER
IGN
IGN-N
PARK
BK 24V
115V
XFMR
BK
IND
ID
BLWR
HE
AT
LO
-H
COOL-H
CIRCULATOR
BLWR
HI
HE
AT
-H
IND-N
CIR-N
WH
COLOR CODES:
YL YELLOW
OR ORANGE
PU PURPLE
GR GREEN
BK BLACK
GR
PK PINK
BR BROWN
WH WHITE
BL BLUE
GY GRAY
RD RED
0140F00662 REV. A
BK
15 PIN PLUG
ON SOME MODELS
BLOWER COMPARTMENT
EAC-H
LINE-H
ELECTRONIC
AIR CLEANER
EAC-N
LINE-N
DOOR SWITCH
SWITCH LOCATED IN BLOWER
COMPARTMENT ON SOME MODELS
BURNER COMPARTMENT
24 VAC
HUMIDIFIER
DOOR
SWITCH
JUNCTION BOX
NO C
RD
RD
PRIMARY LIMIT
YL
YL
RD
YL
PRESSURE
SWITCH
WH
YL
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
AND GROUNDED.
DISCONNECT
BK
L GND N
BR
BL
WH
OVERCURRENT PROTECTION DEVICE
PM
1
C
3
BK
HOT
SURFACE
IGNITER
HI
2
2 STAGE
GAS VALVE
(HONEY WELL)
WH
JUNCTION
BOX
LINE-N
GND
LINE H
PU
PU PU
FLAME
SENSOR
ROLLOUT LIMITS
(SINGLE CONTROL ON SOME MODELS)
0
STEADY ON = NORMAL OPERATION
3
4
5
1
2
6
7
8
C
OFF = CONTROL FAILURE
1 FLASH =
SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
3 FLASHES = PRESSURE SWITCH STUCK OPEN
4 FLASHES = OPEN HIGH LIMIT
5 FLASHES = FLAME SENSE WITHOUT GAS VALVE
6 FLASHES =
OPEN ROLLOUT OR OPEN FUSE
7 FLASHES = LOW FLAME SIGNAL
8 FLASHES = CHECK IGNITER OR IMPROPER GROUND
RAPID FLASHES = REVERSED 115 VAC POLARITY/VERIFY GND
INDUCED DRAFT
BLOWER
TO 115 VAC/ 1/60HZ
POWER SUPPLY WITH
OVERCURRENT PROTECTION
DEVICE
LOW VOLTAGE (24V)
LOW VOLTAGE FIELD
HI VOLTAGE (115V)
HI VOLTAGE FIELD
JUNCTION
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
PLUG CONNECTION
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. BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION
REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE
CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR FLOW CHART)
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.
GDH8
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.
AUX LIM
HIGH LIM
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
17
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