ICC-ES AC122
Full Name
ICC-ES AC122 – Acceptance Criteria for PP, PEX, PEX-AL-PEX, and PP-AL-PP Piping, Tube and Fittings Used in Radiant Heating and Water Supply Systems
Scope
ICC-ES AC122 establishes the acceptance criteria for evaluating the suitability of PP, PEX, PEX-AL-PEX, and PP-AL-PP plastic piping and fittings for use in radiant heating and potable water supply systems. The criteria ensure these materials meet the performance requirements of the International Plumbing Code (IPC), International Residential Code (IRC), and Uniform Plumbing Code (UPC).
Key aspects covered within the scope of AC122 include:
- Material properties: evaluation of the mechanical properties (e.g., tensile strength, impact resistance) and chemical resistance of the plastic materials.
- Pressure and temperature ratings: assessment of the maximum pressure and temperature ratings for safe and reliable operation in radiant heating and water supply systems.
- Dimensions and tolerances: verification of the dimensions and tolerances of the piping, tube, and fittings to ensure proper fit and compatibility.
- Joining methods: evaluation of the joining methods (e.g., heat fusion, mechanical connections) and their effectiveness in creating leak-proof and durable connections.
Specific applications covered by AC122 include:
- Radiant heating systems: evaluation of the suitability of the materials for use in hydronic radiant floor heating systems, including considerations for thermal expansion and contraction.
- Potable water supply systems: assessment of the materials’ compliance with health and safety standards for drinking water applications.
Resources
Keywords
plastic piping; radiant heating; water supply system; PP; PEX; PEX-AL-PEX; PP-AL-PP; tensile strength; impact resistance; pressure rating; temperature rating; heat fusion; mechanical connection