SS-GMS8 www.goodmanmfg.com 3
PRODUCT SPECIFICATIONS
GMS8 SPECIFICATIONS
GMS8
0453ANB*
GMS8
0703ANB*
GMS8
0704BNB*
GMS8
0904BNB*
GMS8
0905CNB*
GMS8
1155CNB*
GMS8
1405DNB
Heating Capacity
Input¹ 45,000 70,000 70,000 90,000 90,000 115,000 140,000
Natural Gas Output¹ 36,000 56,000 56,000 72,000 72,000 92,000 112,000
LP Gas Output¹ 32,000 48,000 48,000 64,000 64,000 80,000 96,000
AFUE² 80 80 80 80 80 80 80
Temperature Rise Range (°F) 25 - 55 25 - 55 20 - 50 35 - 65 35 - 65 35 - 65 40 - 70
Available AC @ 0.5” ESP 3 3 4 4 5 5 5
Circulator Blower
Size (D x W) 10” x 6” 10” x 6” 10” x 8” 10” x 8” 10” x 10” 10” x 10” 10” x 10”
Horsepower @ 1750 RPM ⅓⅓½½ ½ ½¾
Speed 4 4 4 4 4 4 4
Vent Diameter³ 4” 4” 4” 4” 4” 4” 4”
No. of Burners 2 3 3 4 4 5 6
Filter Size (in²)
Permanent 290 290 385 385 480 480 480
Disposable 580 580 770 770 960 960 960
Electrical Data
Min. Circuit Ampacity
4
8.5 8.5 12.9 12.9 12.9 12.9 15.2
Max. Overcurrent Device (amps)
5
15 15 15 15 15 15 15
Ship Weight (lbs) 120 130 143 153 163 163 183
* Low NOx model available.
Natural Gas BTU/h. For altitudes above 2,000’, reduce input rating 4% for each 1,000’ above sea level.
DOE AFUE based upon Isolated Combustion System (ICS)
Vent and combustion air diameters may vary depending upon vent length. Refer 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 Canada).
Minimum Circuit Ampacity = (1.25 x Circulator Blower Amps) + ID Blower amps. Wire size should be determined in accordance with National Electri-
cal Codes. Extensive wire runs will require larger wire sizes.
Maximum Overcurrent Protection Device refers to maximum recommended fuse or circuit breaker size. May use fuses or HACR-type circuit breakers
of the same size as noted.
Notes:
All furnaces are manufactured for use on 115 VAC, 60 Hz, single-phase electrical supply.
Gas Service Connection ½” FPT
Important: Size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and/or all existing
local codes.
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