ASHRAE Publishes 2001 Refrigerant Safety Standard
Standard 34-2001 incorporates the 1997 standard as well as 17 previously approved addenda. The standard is published on a three-year cycle to coincide with the deadlines for adoption by major building code organizations.
"The standard now contains all addenda in one document, which makes it more convenient and easier to use," Steve Szymurski, chair of the Standard 34 committee, said.
Among the addenda incorporated are five new addenda, 34m, 34n, 34r, 34s and 34t. These addenda add designations and safety classifications for R414B, R416A, and R417A; change the safety classification of R245fa to B1; and change the composition tolerances for R402A and R402B.