What should be done with the nitrogen holding charge in the evaporator coil and refrigerant lines when installing split systems?

The correct approach regarding the nitrogen holding charge in the evaporator coil and refrigerant lines during the installation of split systems involves utilizing nitrogen for safety and performance assessments. Specifically, nitrogen is typically used to pressurize the system to check for leaks, which is essential to ensure system integrity before it is charged with refrigerant.

When using nitrogen for pressure testing, it should be handled correctly and not simply released into the atmosphere. Releasing nitrogen into the atmosphere does not provide any advantages and poses safety risks. Instead, the gas can be effectively used to ensure there are no leak points, which is crucial for maintaining system efficiency and preventing refrigerant loss.

In cases where nitrogen is stored or kept under pressure, it serves specific purposes related to safety and utility during installation. However, the primary objective of using nitrogen in the context provided is to test for leaks, highlighting its importance in the integrity and functioning of the refrigeration system. Therefore, utilizing nitrogen for testing ensures that the system will operate effectively and safely long-term.