R-410A than other refrigerants. R-410A systems thus require service personnel to use different tools, equipment, safety standards, and techniques. Equipment manufacturers are aware of these changes and require the certification of professionals installing R-410A systems. In addition, the AC&R Safety Coalition has been created to help educate professionals about R-410A systems. In accordance with terms and agreement reached in the Montreal Protocol (The Montreal Protocol on Substances that Deplete the Ozone Layer) the United States Environmental Protection Agency has mandated that production or import of R-22 along with other hydrochlorofluorocarbons (HCFCs) be phased out in the United States. In the EU
The Montreal School The Montreal School The Montreal School, as its name suggests, is a school of thought in the field of organizational communication. It was initiated by James R. Taylor and colleagues in the Department of Communication at the Université de Montréal. It origin can be traced back to the introduction in 1987 of a new doctoral program bringing together three major French-language universities in Montreal, the Université de Montréal, the Université du Québec à Montréal, and Concordia University. The Montreal School has had, and continues to have, a global resonance in Europe ) as well as on the American continent, where