Spec Sheet

ManualsBrandsGOODMAN ManualsForced Air Furnaces80% AFUE 80,000 BTU Multi-Positional Single Stage Multi-Speed Natural Gas Furnace with 21 in. Cabinet

SS-GMS8 www.goodmanmfg.com 5/18

Supersedes 1/18

Heating Input : 40,000–140,000 BTU/h

Single-Stage, Multi-Speed,

Multi-Position Gas Furnace

80% AFUE

 

Exchanger Limited Warranty (good for as long as you own your home) and 10-Year Parts Limited Warranty, online



Standard Features Cabinet Features

• 

diameter tubular heat exchanger

• Single-stage gas valve

• 

• 

• 

• Color-coded low-voltage terminals

• 

• 

• 

• 

• 

– 



– 

• 

for gas and electrical service

• 



• Foil faced insulated heat exchanger

Contents

Nomenclature ........................................ 2

 ........................... 3

Dimensions ............................................ 5

 ........................................... 

Wiring Diagrams .................................. 11

Accessories .......................................... 12

 .......................... 12

GMS8/GDS8/GHS8

Summary of content (12 pages)

PAGE 1
GMS8/GDS8/GHS8 Single-Stage, Multi-Speed, Multi-Position Gas Furnace 80% AFUE Heating Input : 40,000–140,000 BTU/h Contents Nomenclature......................................... 2 Product Specifications............................ 3 Dimensions............................................. 5 Airflow Data............................................ 8 Wiring Diagrams................................... 11 Accessories........................................... 12 Minimum Filter Sizes ..........................
PAGE 2
Nomenclature G M S 80 040 3 B X ** 1 2 4 5,6 7,8,9 10 11 12 13,14 Brand Engineering G - Goodman® Brand Major / Minor Revisions Configuration NOx M - Upflow/Horizontal C - Downflow/Horizontal N - Natural Gas D - Dedicated Downflow X - Low NOx H - High Airflow Gas Valve Cabinet Width S - Single Stage, Single Speed A - 14" C - 21" B - 17½" D - 24½" AFUE Maximum CFM 80 - 80% AFUE 3 - 1200 CFM MBTU/h 2 4 - 1600 CFM 040 - 40,000 BTU/h 100 - 100,000 BTU/h 060 - 60,000
PAGE 3
GMS8 Product Specifications GMS8 0403A*B GMS8 0603A*B GMS8 0604B*B GMS8 0804B*B GMS8 0805C*B GMS8 1005C*B GMS8 1205D*B GMS8 1405DNC Input 40,000 60,000 60,000 80,000 80,000 100,000 120,000 140,000 Natural Gas Output 32,000 48,000 48,000 64,000 64,000 80,000 96,000 112,000 LP Gas Output 32,000 48,000 48,000 64,000 64,000 80,000 96,000 96,000 80 80 80 80 80 80 80 80 Heating Capacity AFUE ¹ Available AC @ 0.
PAGE 4
GDS8/GHS8 Specifications GDS8 0403A*B GDS8 0603A*B GDS8 0804B*B GDS8 1005C*B GHS8 0403A*B GHS8 0604B*B GHS8 0805C*B Input 40,000 60,000 80,000 100,000 40,000 60,000 80,000 Natural Gas Output 32,000 48,000 64,000 80,000 32,000 48,000 64,000 LP Gas Output 32,000 48,000 64,000 80,000 32,000 48,000 64,000 AFUE ¹ 80 80 80 80 80 80 80 Available AC @ 0.
PAGE 5
GMS8 Dimensions Alt. Flue Outlet — Horizontal Left 1¾” 17⁄16” A B 19½” ➤ Alternate Gas Inlet ➤ ➤ 33⅜” Alt. Gas Inlet ➤ 27⅞” 20” High-Voltage Inlet 235⁄16” Alt. High Voltage 15” 13¼” Low-Voltage Inlet Alt.
PAGE 6
GDS8 Dimensions A 28” 19 ⅝” B High-Voltage Electrical Low-Voltage Electrical 33 ⅜” Gas Inlet 18 ⅜” 11 ⅜” A B Non-Combustible Floor Base GDS80403A*B 14” 12½” SBT14 GDS80603A*B 14” 12½” SBT14 GDS80804B*B 17½” 16” SBT17 GDS81005C*B 21” 19½” SBT21 Model Notes • Line voltage wiring can enter through the right or left side of furnace. Low-voltage wiring can enter through the right or left side of furnace.
PAGE 7
GHS8 Dimensions Alt. Flue Outlet — Horizontal Left 1¾” 17⁄16” A B ➤ Alternate Gas Inlet 19½” ➤ ➤ 33⅜” Alt. Gas Inlet ➤ 27⅞” 20” High-Voltage Inlet 235⁄16” Alt. High Voltage 15” 13¼” Low-Voltage Inlet Alt. Low Voltage ➤ 23” ➤ ➤ 28” A B GHS80403AXB* 14” 12½” GHS80604BXB* 17½” 16” GHS80805CXB* 21” 19½” Model Notes • Line voltage wiring can enter through the right or left side of furnace. Low-voltage wiring can enter through the right or left side of furnace.
PAGE 8
GMS8 Airflow Data CFM & Temperature Rise vs. External Static Pressure Model GMS8 0403A*B GMS8 0603A*B GMS8 0604B*B GMS8 0804B*B GMS8 0805C*B GMS8 1005C*B GMS8 1205D*B GMS8 1405DNC* Motor Speed Tons AC¹ High External Static Pressure, (Inches Water Column) 0.6 0.7 0.8 CFM 0.1 Rise CFM 0.2 Rise CFM 0.3 Rise CFM 0.4 Rise CFM 0.5 Rise CFM CFM CFM 3 1,521 --- 1,466 --- 1,414 --- 1,373 --- 1,298 --- 1,243 1,164 1,075 Med 2.
PAGE 9
GDS8 Airflow Data CFM & Temperature Rise vs. External Static Pressure Model GDS8 0403A*B GDS8 0603A*B GDS8 0804B*B GDS8 1005C*B Motor Speed Tons AC¹ External Static Pressure, (Inches Water Column) 0.1 CFM 0.2 Rise CFM 0.3 Rise CFM 0.6 0.7 0.8 Rise CFM 0.4 Rise CFM 0.5 Rise CFM CFM CFM High 3.0 1,353 --- 1,290 --- 1,246 --- 1,199 25 1,149 26 1,116 1,116 1,099 Med 2.5 1,183 25 1,113 27 1,098 27 1,052 28 1,039 29 1,006 1,012 969 Med-Lo 2.
PAGE 10
www.goodmanmfg.com 10 20 30 40 50 60 70 30 80 90 100 40 50 60 700 600 CFM 90 100 2000 2200 2400 CFM 1800 1600 1400 Output BTU/h x 1,000 OUTPUT BTU/HR x 1000 80 1200 1100 1000 900 70 800 Formulas FORMULAS 110 120 130 140 BTUBTU/h OUTPUT 1.08x xRise RISE Output==CFM CFRM xx 1.08 BTU OUTPUT RISERise = = BTU/H Output ÷÷ CFM CFM 1.08 CFM x 1.08 BTU OUTPUT vs TEMPERATURE CHART BTU/h Output Vs.
PAGE 11
Wiring Diagram WARNING:DISCONNECT POWER BEFORE SERVICING.WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.
PAGE 12
Accessories Model Description LPT-03 ¹ LP Conversion Kit HANG20 High-Altitude Natural Gas Kit (4500+ ft) AFE18-60A Fossil Fuel Kit MVK-01 ² Masonry Vent Kit MVK-02 ² Masonry Vent Kit (for GMS81205D* & GMS81405D* only) TK-400 Twinning Kit ¹ ² White-Rodgers and Honeywell valves Upflow applications only Downflow Sub-base for: Model Description SBT14 14” Furnace SBT17 17½” Furnace SBT21 21” Furnace GDS8 0403A*B GDS8 0603A*B √ √ GDS8 0804B*B GDS8 1005C*B √ √ Minimum Filter Sizes G