HVAC Type 2 EXAM QUESTIONS AND ANSWERS

R-22 - ANSWERWhich refrigerant can be used for leak detection as a trace gas and pressurized with nitrogen Type 2 certs applies to - ANSWERHigh and very high pressure refrigerants R-134a - ANSWERWhich refrigerant is a drop in replacement for R-12 False - ANSWERIf nitrogen is not available for a leak test, compress air may be used as a substitute Pressure relief valve, rupture disk, and fusible plug - ANSWEREvery refrigerating system shall be protected from high pressure by a Synthetic esters - ANSWERThe oils that should be used with HFC-134a refrigeration applications are Grey with yellow top - ANSWERThe color code for recovery vessels are 35% - ANSWERIndustrial process and commercial refrigeration equipment with an annual leak rate of ? Require repairs under EPA regulation R-22 - ANSWERWhat type of refrigerant would you expect to find in a residential air conditioning system