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Refrigeration Circuit Piping & brazing

Nitrogen purge and pressure testing

Core

Flow nitrogen while brazing, then pressure test to the correct test pressure with a regulator set properly.

Why oxidation inside the line matters, regulator setup, flow rates for purging, standing pressure tests and where test pressures come from.

Before this skill

HVAC Excellence competency codes

  • CAC-131
  • MS-074
  • RAC-079
  • HP-087
  • RAC-102

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