ANSI/ASHRAE 25-2001 (RA 2006)
This is a reaffirmation of ASHRAE Standard 25-2001. This standard was prepared under the auspices of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). It may be used, in whole or in part, by an association or government agency with due credit to ASHRAE. Adherence is strictly on a voluntary basis and merely in the interests of obtaining uniform standards throughout the industry.The changes made for the 2006 reaffirmation were: