PRODUCT SPECIFICATIONS
SS-GMS8 www.goodmanmfg.com 6/08
Supersedes 1/08
GMS8/GDS8/GHS8
Standard Features
Patented Tu Tube™ dual-diameter tubular
heat exchanger
Single-stage combination redundant gas valve
Hot surface igniter and patented adaptive
learning control for maximum igniter life
Energy-saving, quiet four-speed direct-drive
circulator blower motor
Furnace control board with self-diagnostics and low-
voltage terminal block
Quiet single-speed, induced-draft blower
Cabinet Features
Foil-faced insulation lines the heat exchanger
compartment
Designed for multi-position installation:
GMS8 and GHS8: up ow, horizontal left or right
GDS8: dedicated down ow
Coil and furnace t ush for most installations
Contents
Nomenclature .................................................................................2
Product Specifications ................................................................. 3
Dimensions ...................................................................................... 5
Blower Performance Speci cations ........................................ 7
Wiring Diagrams ..........................................................................10
Schematics ....................................................................................11
Accessories ....................................................................................12
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MULTI-POSITION, SINGLE-STAGE/
M
ULTI-SPEED GAS FURNACES
HEATING INPUT:
45,000–140,000 BTU/H
The Goodman
®
GMS8 / GHS8 / GDS8 80% AFUE Single-Stage,
Multi-Speed Gas Furnaces feature a patented aluminized-
steel tubular heat exchanger and energy-e cient Hot
Surface Ignition system. This furnace is run-tested for
heating or combination heating/cooling applications.
With a heavy-gauge, reinforced steel cabinet and durable
baked enamel nish, this unit can be installed in a variety
of locations.
80% AFUE
For full warranty
details, visit
www.goodmanmfg.com.
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