Provides a comprehensive set of symbols for use in drawings and documents relating to the design of HVAC&R systems. In a survey of governments and standards organizations from around the world, the project committee found agreement in some areas of symbol usage and practice but wide variation in others. This standard aims to establish a common symbol language in order to standardize HVAC&R drawings & make them more accessible for the growing number of international users.
ANSI/ASHRAE 134-2005 history
2005ANSI/ASHRAE 134-2005 Graphic Symbols for Heating, Ventilating, Air-Conditioning and Refrigerating Systems