This product is a PDF that contains links to files that consist of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) as noted.

Environmental considerations are reducing the number of chemicals that can be used as refrigerants. The HFCs were introduced to replace ozone depleting CFCs and HCFCs, but they are greenhouse gases and are subject to use restrictions in some countries. As a result the industry is evaluating chemicals with very low global warming potential. Some of these chemicals are mildly flammable and have been assigned to a new flammability safety classification, 2L, in ASHRAE Standard 34. This seminar provides information on the changes to standards that specify requirements for the use of 2L flammable refrigerants.

11-1 ASHRAE Standard 15: Proposed Changes to Incorporate 2L Refrigerants
Phillip Johnson, P.E., Daikin McQuay
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)

11-2 ISO 5149, IEC 60335-2-40: Proposed Changes to Incorporate 2L Refrigerants
Osami Kataoka, JRAIA
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)

11-3 UL's Effort to Harmonize Product Safety Requirements for A2L, A2, and A3 Refrigerants
Brian Rodgers, Underwriters Laboratories
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)