Furnace Specifications - Goodman GMH80453AN Series Technical Manual

Gmh8 39" 80% gas furnace 80% afue, 2-stage (convertible), multi-speed, upflow/horizontal
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FURNACE SPECIFICATIONS

MODEL
Input, Natural Gas (BTUH)
Output, Natural Gas (BTUH)
Output, LP (BTUH)
A.F.U.E.
Rated External Static (" w.c.)
Temperature Rise (°F)
Pressure Switch Trip Point (" w.c.)
Blower Wheel (D" x W")
Blower Horsepower
Blower Speeds
Max CFM @ 0.5 E.S.P.
Power Supply (Volts/Hz/Ph)
Minimum Circuit Ampacity (MCA)
Maximum Overcurrent Device
Transformer (VA)
ID Blower Pressure Switch
Trip Point (" w.c.)
Square Nose Blowers
ID Blower Pressure Switch
Trip Point (" w.c.)
Round Nose Blowers
Primary Limit Setting (°F)
Auxiliary Limit Setting (°F)
Rollout Limit Setting (°F)
Fan Delay On Heating
Off Heating *
Fan Delay On Cooling
Off Cooling
Fan Delay On - Fan Only
Gas Supply Pressure
(Natural/Propane) (" w.c.)
Manifold Pressure
(Natural/Propane) (" w.c.)
Orifice Size (Natural/Propane)
Number of Burners
Vent Connector Diameter (inches)
Shipping Weight (lbs.)
*
Low NOx model available
1.
These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane operation.
2.
Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps. Wire sizes should be determined in accordance
with National Electrical Codes.Extensive wire runs will require larger wire sizes.
3
Maximum Overcurrent protections Device refers to maximumrecommended fuse or circult breaker size. May use time delay fuses or HACR-
type circuit breakers of the same sizes as noted.
NOTES:
1.
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.
2.
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, steady state efficiency times
output.
12
45,000
70,000
1
36,000
56,000
32,000
48,000
80.0%
80.0%
0.20 - 0.50
0.20 - 0.50
25 - 55
25 -55
-0.60
-0.60
10x6
10x6
1/3
1/3
4
4
1344
1273
115/60/1
115/60/1
2
8.1
8.1
3
15
15
40
40
-.60
-.60
-.60
-.60
210
160
120
120
300
300
30
30
150
150
5
5
45
45
5
5
7 / 11
7 / 11
3.5 / 10
3.5 / 10
43 / 55
43 / 55
2
3
4
4
120
130
70,000
90,000
90,000
56,000
72,000
72,000
48,000
64,000
64,000
80.0%
80.0%
80.0%
0.20 - 0.50
0.20 - 0.50
0.20 - 0.50
20 - 50
30 - 60
35 - 65
-0.60
-0.60
-0.60
10x8
10x8
10x8
1/2
1/3
4
4
1897
1493
1895
115/60/1
115/60/1
115/60/1
12.5
8.1
12.5
15
15
40
40
-.60
-.60
-.60
-.47
-.75
-.75
170
150
170
120
120
120
300
300
300
30
30
150
150
150
5
5
45
45
5
5
7 / 11
7 / 11
7 / 11
3.5 / 10
3.5 / 10
3.5 / 10
43 / 55
43 / 55
43 / 55
3
4
4
4
143
153
153
90,000
115,000
72,000
92,000
64,000
80,000
80.0%
80.0%
0.20 - 0.50
0.20 - 0.50
35 - 65
35 - 65
-0.70
-0.70
10x10
10x10
1/2
1/2
1/2
4
4
4
2051
2076
115/60/1
115/60/1
12.5
12.5
15
15
15
40
40
40
-.70
-.70
-.60
-.70
200
150
120
120
300
300
30
30
30
150
150
5
5
5
45
45
45
5
5
5
7 / 11
7 / 11
3.5 / 10
3.5 / 10
43 / 55
43 / 55
4
4
5
4
4
4
163
163
140,000
112,000
96,000
80.0%
0.20 - 0.50
40 - 70
-1.35
10x10
3/4
4
2152
115/60/1
14.7
15
40
-.75
-.60
150
120
300
30
150
5
45
5
7 / 11
3.5 / 10
43 / 55
6
4
183

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