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TECHNICAL INFORMATION MANUAL
GDS8, GMS8, GHS8
40" 80% Gas Furnace Units
•
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.
This manual is to be used by qualified, professionally trained HVAC
®
technicians only. Goodman does not assume any responsibility for
property damage or personal injurydue to improper service procedures
performed by an unqualified person.
Copyright © 2005-2007 Goodman Manufacturing Company, L.P.
Models listed on
page 3
RT6622004 Rev. 1
September 2007
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Table of Contents
Related Manuals for Goodman GMS81155CN
Summarization of Contents
Product Design and Operation
General Operation
Explains electronic ignition, induced draft blower, and self-diagnosing control module.
Location Considerations
Details furnace placement relative to air distribution and specific locations like garages.
Component Identification
Downflow Models Component Diagram
Illustrates and lists key components for downflow furnace models.
Upflow/Horizontal Models Component Diagram
Illustrates and lists key components for upflow/horizontal furnace models.
Product Design: Pressure Switches
GMS8 & GHS8 Square Nose Pressure Switch Data
Details trip points and part numbers for square nose blowers.
GMS8 & GHS8 Round Nose Pressure Switch Data
Details trip points and part numbers for round nose blowers.
Product Design: Limit Switches (GMS8 & GHS8)
T.O.D. Primary Limit Settings (GMS8 & GHS8)
Lists part numbers and open settings for T.O.D. primary limit switches.
Rollout Limit Switches (GMS8 & GHS8)
Lists part numbers and open settings for rollout limit switches.
Auxiliary Limit Switches (GMS8 & GHS8)
Lists part numbers and open settings for auxiliary limit switches.
Product Design: GDS8 Switches and Limits
GDS8 Switch and Limit Settings
Details pressure switch trip points and limit switch settings for GDS8 models.
Product Design: Thermostats and Filters
Suggested Thermostats
Lists Amana® brand thermostats recommended for G*S8 furnaces.
Filter Requirements and Sizes
Details filter requirements and sizes for upflow and counterflow applications.
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