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Académie
HVAC
NATE CHP-5 Certified HVAC Professional
Installation Practices
Vérification des connaissances
Installation Practices
Vérification des connaissances
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After completing a nitrogen pressure test on new refrigerant piping, what must be done before charging?
A
Pressurize with refrigerant to operating pressure and check for leaks again
B
Evacuate the system to a deep vacuum before introducing refrigerant
C
Flush the lines with refrigerant to remove nitrogen contamination
D
Charge with nitrogen and refrigerant mixture for faster startup
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