Goodman GDH8 Series User Manual

C
US
®
• 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.
Copyright © 2011, 2013 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.
RT6621022r2
March 2013
GDH8 33-3/8" 80% Gas Furnace
80% AFUE, 2-Stage (Convertible),
Multi-Speed, Dedicated Downflow
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Goodman GDH8 Series Specifications

General

Brand	Goodman
Model	GDH8 Series
Category	Furnace
Language	English

Summary

Product Identification

Product Design

General Operation

Describes the basic functioning of the furnace, including ignition and blower.

Location Considerations

Provides guidelines for optimal furnace placement and installation safety.

Accessibility Clearances (Minimum)

Specifies the minimum required space around the furnace for servicing.

High Altitude Derate

Explains necessary adjustments for furnace operation at higher elevations.

Product Dimensions

Component Specifications

Pressure Switch

Details pressure switch models, part numbers, and opening pressure.

Primary Limit

Lists primary limit switch part numbers and temperature settings.

Rollout Limit Switches

Provides part numbers and temperature settings for rollout limit switches.

Auxiliary Limit Switches

Details auxiliary limit switch part numbers and temperature settings.

Coil Matches

Thermostats and Filters

Thermostats

Notes that the complete thermostat lineup is found in separate specification sheets.

Filters

Specifies required filter compliance and minimum filter sizes for disposable filters.

Dual Saver Configuration & Operation

Furnace Specifications

Blower Performance Specifications

Wiring Diagram

Schematics