If the throw distance is incorrectly calculated, occupants may feel drafts or experience stagnant air zones.
The purpose of Standard 70 is to define uniform laboratory methods for testing the performance of air outlets and air inlets. It provides specifications for instruments and procedures to determine:
: Always verify with local building codes which version of Standard 70 is legally mandated in your jurisdiction. While ASHRAE 70-2023 is the most current technical standard, some older local codes may still reference the 2006 or 2011 versions. Read-Only Versions of ASHRAE Standards
You can purchase the PDF version of ASHRAE Standard 70-2006 from the ASHRAE website or other online platforms that sell standards and technical documents. ashrae standard 702006 pdf updated
Understanding ASHRAE Standard 70-2006 (Updated): Testing Air Outlets and Inlets
The updated ANSI/ASHRAE Standard 70-2006 (RA 2021) can be purchased on the ASHRAE website . Key Sections of the Standard
: A new Normative Appendix F was added specifically for rotating vane anemometer flow measuring systems. If the throw distance is incorrectly calculated, occupants
: A combination assembly consisting of a grille and an integrated airflow volume control damper.
If you design a relief valve scenario using the 2006 calculation method for a modern R-32 system, you will likely undersize the valve, leading to code violation and safety risk.
While ASHRAE Standard 70-2006 is still widely referenced, it's essential to note that ASHRAE has published updated standards and guidelines related to indoor air quality: While ASHRAE 70-2023 is the most current technical
) is a calculated correction factor that accounts for the free area of the grille vs. the total face area.
Clarifies data calculation methods to ensure they apply accurately across the new, wider range of covered devices. Accuris Standards Store Overview of Standard 70
If you are working on a current project, you should likely be using . If you are specifically bound by a contract or code established in 2006, then Standard 70-2006 is the correct reference, but be aware it has been superseded.
