As the HVACR industry continues to move forward and innovate, the refrigerants that were once so commonplace are now being phased out. Replacing them are more energy efficient, environmentally friendlier refrigerants, known as Low GWP refrigerants. Many of these new refrigerants are classified by ASHRAE as A2L, or slightly flammable. The industry is also seeing expanded use of some hydrocarbon (A3) refrigerants, such as propane and isobutane. Students and technicians will require additional training for the safe handling and transportation of these refrigerants. The Low GWP refrigerant program manual covers:
Refrigerant safety
Introduction to Low GWP refrigerants
Refrigerant properties and characteristics
The refrigeration cycle
Working with refrigerant blends
Proper installation and service guidelines
Flammable refrigerant considerations
Explanation of the associated codes and standards for A2L refrigerants