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HVAC
Universal R-410A Safety Certification
Charging Procedures
Knowledge Check
Charging Procedures
Knowledge Check
Knowledge Check
1 / 14
What vacuum level must be achieved before charging R-410A into a newly installed system?
A
1000 microns is acceptable for most residential systems
B
29 inches of mercury (in. Hg) as indicated by a compound gauge
C
Vacuum level is not critical if nitrogen flush was performed
D
500 microns (Hg) as indicated by a micron gauge
Check Answer
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