The circulation system piping that is not included in the manufacturer's piping should be subjected to a pressure test of how many psi for 30 minutes?

The correct pressure test requirement for the circulation system piping that is not included in the manufacturer's piping specifies that it must withstand a test of 25 psi for a duration of 30 minutes. This standard is in place to ensure the integrity and safety of the plumbing system by verifying that the pipe joints and connections can handle operational pressures without leaks.

A pressure test at 25 psi is typically sufficient to identify any potential weaknesses or leaks that could compromise the system's function. Conducting this test for 30 minutes allows for adequate time to assess the stability and reliability of the installed piping under pressure, which is essential in commercial pool operations where system failure could create significant safety and operational concerns.

The other pressure values, such as 10 psi, 20 psi, and 30 psi, do not meet the established standard, which is specifically set at 25 psi. Inadequate testing pressure could either fail to identify potential issues (if too low) or expose the system to unnecessarily high pressure (if too high) that may not accurately reflect the working conditions the system will actually experience. This standardization helps ensure that all installations adhere to safety protocols and operational efficiency.