InstallationQuestion 47 of 110
Before releasing refrigerant charge into a newly installed line set, the system should be tested and then processed how?
a.Charged immediately without testing
b.Pressure tested for leaks, then evacuated to remove moisture and non-condensables
c.Filled with water
d.Left open to atmosphere
Explanation
Best practice is to pressure test the assembled line set for leaks, then pull a deep vacuum to remove moisture and non-condensable gases before charging. Moisture left inside can freeze at the metering device and form acids. Only after a proper evacuation should refrigerant be introduced.
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