New graphic standard aims to bring uniformity to HVAC drawings

In an effort to standardize symbols used by mechanical engineers on building drawings, the American Society of Heating Refrigerating and Air-Conditioning Engineers has issued a new symbol language for HVAC equipment.
ANSI-ASHRAE Standard 134-2995, Graphic Symbols for HVAC& R Systems identifies graphic symbols by name, configuration and description. The symbols are intended for manual and CAD drawings.
“Having a standard symbol language for consulting engineers and contractors will minimize the effort and time to universally interpret drawings,” said Herman Behls, a member of the committee that wrote the standard. He also suggested that a standard symbol system will increase the accuracy and efficiency of engineering designs.