ATLANTA - A new standard from the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) provides a comprehensive set of airside, piping, controls, and equipment symbols related to HVACR systems.
ANSI/ASHRAE Standard 134-2005, Graphic Symbols for HVACR Systems, identifies graphic symbols by name, configuration, and description. The symbols are intended for use in the preparation of manual drawings and those produced by computer-aided drafting.