Goodman GMH80704BN 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
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Goodman GMH80704BN Series Specifications

General

Brand	Goodman
Model	GMH80704BN Series
Category	Furnace
Language	English

Summary

Product Identification

Product Design

General Operation

Explains the furnace's electronic ignition, induced draft blower, interlock switch, and self-diagnosing control module.

Location Considerations

Details furnace placement, avoiding carpeting, and considerations for garage installation.

Product Design - Accessibility and Altitude

Accessibility Clearances (Minimum)

Specifies minimum clearances to combustible materials for servicing and operation.

High Altitude Derate

Explains the need for high altitude orifice kits and provides derate information for various altitudes.

Component Identification

Product Dimensions

Product Design - Coil Matches

Coil Matches

Provides information on matching Goodman brand coils with GDH8 furnaces using R22 and R-410A.

Product Design - Filters and Thermostats

Thermostats

Refers to Thermostat Specification Sheets for complete lineup.

Filters

Details filter requirements, compliance standards, and warranty implications.

Upflow Filters

Describes filter provisions and sizes for side and bottom returns in upflow configurations.

Product Design - Dual Saver

Dual Saver Configuration & Operation

Explains the Single Stage and Modified Two-Stage heating modes and how to configure them.

Furnace Specifications

Blower Performance Specifications

Wiring Diagrams

Schematics