What is required for hydronic piping when passing through masonry or concrete?

When hydronic piping passes through masonry or concrete, it is essential for it to be sleeved. This requirement is primarily for protection and to prevent damage to the piping due to the rigid nature of the surrounding materials. Sleeving provides a barrier that accommodates movement, thermal expansion, and contraction of the piping, while also preventing direct contact between the piping and concrete or masonry, which can lead to wear and corrosion over time.

Additionally, sleeving ensures that any moisture present in masonry or concrete does not come into direct contact with the hydronic piping, which could lead to further issues like corrosion or material degradation. Therefore, the use of sleeves is a best practice that helps maintain the integrity and longevity of the hydronic system when it is installed in such conditions. This is especially important in building codes and standards, which are designed to ensure safe and reliable installations.