The purpose of this standard is to define graphic symbols for heating, ventilating, air-conditioning and refrigerating systems.

This standard covers graphic symbols for heating, ventilating, air-conditioning, and refrigerating systems and equipment, including related controls. It identifies graphic symbols by name, configuration, and description. The graphic symbols in this standard are intended for use in manual drawings and drawings produced by computer-aided drafting (CAD).

This downloadable version of the standard is a 15 MB zip file, containing a PDF of the standard and the DWG files of the graphic symbols used in the standard.

Units: Dual