When installing an ASD system with multiple suction points, what does the ANSI-AARST standard require regarding air valves, dampers, or baffles?

The ANSI-AARST standard emphasizes proper documentation and transparency regarding the installation of systems like the Active Soil Depressurization (ASD) system. Specifically, it requires that air valves, dampers, or baffles be included in "as built" records and marked for their purpose. This ensures that anyone reviewing or inspecting the system can easily understand its design and functionality. Proper labels and documentation enhance safety and facilitate maintenance and troubleshooting in the future.

The need for this documentation reflects a commitment to best practices in system installation, helping ensure that all components of the system function correctly and can be addressed if issues arise. By marking the purpose of these components, it prevents confusion during future inspections or repairs, promoting a consistent and effective approach to radon mitigation efforts.

This requirement underscores the importance of clear communication in the installation process, helping both the installers and future users to maintain an effective radon mitigation strategy.