Essentially, if you are selecting a diffuser for a conference room and need to know its throw, drop, and sound power level, the data you are looking at was likely generated using the protocols set in Standard 70.
Testing the noise levels generated by the air device, crucial for occupant comfort. Temperature Differential (
The search for the "ashrae standard 702006 pdf updated" ultimately leads to a fork in the road.
📄 ANSI/ASHRAE Standard 70-2006 – Method of Testing for the Rating of Air Moving Devices
Now covers more modern air-device types and sizes, including underfloor and displacement ventilation outlets.
ASHRAE Standard 70-2006, which provides methods for testing the performance of air outlets and inlets, was superseded by the updated . Current Status and Editions
: The most direct and reliable source for ASHRAE standards is the ASHRAE website itself. You can visit www.ashrae.org and search for the standard by its number or name.
While remained an industry staple for years through multiple Reaffirmations (including RA 2011 and RA 2021), the standard underwent a massive structural update with the release of ASHRAE Standard 70-2023 . Keeping up with these updates is critical for modern commercial HVAC design. The Purpose and Scope of ASHRAE Standard 70
While the 2006 version focused heavily on traditional ceiling and wall diffusers, the update expands coverage to specialized high-efficiency systems. This includes and underfloor air distribution (UFAD) outlets. Modern Instrumentation Requirements
Standard 70 defines used to terminate ducted and unducted systems for the distribution and return of building air. It is the authoritative method for quantifying airflow and the efficiency of air distribution devices within a space.
Understanding ASHRAE Standard 70-2006: Testing Air Outlets and Inlets