Consumers can find user manuals for Goodman residential gas furnaces through the company's eDocument portion of the website, or when someone buys a model and has it installed. As of February 2015, Goodman's website has installation, technical and repair parts manuals for 15 different gas furnaces.
Installation manuals cover removal of an older unit, types of venting, electrical connections, fossil fuel applications and air circulation. Goodman recommends installation from a licensed HVAC technician due to safety concerns and possible damage to the unit. Professional installers affix the installation manual to the outside of the unit when they are done. These types of manuals represent the longest documents, in terms of page numbers, provided with the HVAC unit.
Technical manuals for Goodman furnaces include parts diagrams, an explanation of product serial numbers, dimensions and specifications. This document contains filter sizes for air flow, wiring sizes to ensure proper electrical connections and blower performance specifications to check for wear and tear on blower parts. Technical manuals help consumers and professionals when service must be performed on furnaces.
The repair parts manual lists every functional part of the furnace and corresponding parts numbers. Sections of the furnace such as the blower, cabinet, control panel and heat exchanger have detailed diagrams that show smaller parts of the assemblies. These diagrams allow consumers and HVAC techs to compare visual pictures of parts with a parts list to determine what part must be ordered to repair the unit.