Goodman GMH80703AN Series User Manual

C
US
®
RT6621014 Rev. 2
June 2009
Copyright ©2006 - 2009 Goodman Manufacturing Company, L.P.
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.
• 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.
GMH8 39" 80% Gas Furnace
80% AFUE, 2-Stage (Convertible),
Multi-Speed, Upflow/Horizontal
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANU
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Goodman GMH80703AN Series Specifications

General

Brand	Goodman
Model	GMH80703AN Series
Heating Capacity	70, 000 BTU
Efficiency Rating	80% AFUE
Blower Motor	Multi-Speed
Fuel Type	Natural Gas
Installation Type	Upflow/Horizontal
BTU Input	70, 000 BTU
Output BTU	56, 000 BTU
Heat Exchanger	Aluminized Steel
Warranty	10-Year Parts Limited Warranty

Summary

PRODUCT IDENTIFICATION

PRODUCT DESIGN

General Operation

Explains the basic operational features of the furnace, including ignition and safety switches.

Location Considerations

Details important factors for selecting the correct installation site for the furnace.

PRODUCT DESIGN

Accessibility Clearances (Minimum)

Specifies the minimum clearances required around the furnace for safe operation and servicing.

High Altitude Derate

Provides information on adjusting furnace performance for high altitude installations.

COMPONENT IDENTIFICATION

PRODUCT DIMENSIONS

PRODUCT DESIGN

T.O.D. Primary Limit

Details the specifications for the primary limit switch, including part numbers and settings.

Rollout Limit Switches

Lists part numbers and settings for the rollout limit switches.

Auxiliary Limit Switches

Provides part numbers and settings for auxiliary limit switches.

PRODUCT DESIGN

Coil Matches

Details compatible Goodman brand A/C coils for use with GMH8 furnaces.

PRODUCT DESIGN

Thermostats

Notes on thermostat selection and compatibility for the furnace.

Filters

Information on required filters, compliance standards, and warranty implications.

Upflow Filters

Details filter sizes and approximate flow areas for upflow furnace configurations.

PRODUCT DESIGN

Dual $aver Configuration & Operation

Explains the dual stage heating modes and how to configure them using dipswitches.

FURNACE SPECIFICATIONS

BLOWER PERFORMANCE SPECIFICATIONS

WIRING DIAGRAMS

SCHEMATICS