Historical
SMACNA 1780-2002
HVAC Systems - Testing, Adjusting and Balancing
This new version has been extensively updated from the 1993 version and includes all of the many changes that have taken place in the HVAC industry. New sections covering VFD, DDC, lab hood exhaust balancing, and the latest changes in balancing equipment and procedures are included.
American National Standards Institute [ansi]