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 | Refigerant Transistion and Recovery Certification Program Manual for HVACR Technicians: Section 608 Ceriification Program, (5th Edition) by John Tomczyk, Delta-T Solutions Paperback, 164 Pages, Published 2005 ISBN-10: 1-892765-24-1 / 1892765241 ISBN-13: 978-1-892765-24-6 / 9781892765246 This manual prepares HVAC-R technicians with the knowledge needed to respond professionally to current and future environmental challenges. It begins with discussion of HVAC fundamentals and core topics, such as: refrigerant chemistry, oils, ozone depletion, global warming, and the Montreal protocol | |