TS EN 1264-1

TS EN 1264-1 defines the terms, symbols and system types used for water based surface embedded heating and cooling systems. As the opening part of the EN 1264 family, it establishes a common technical language for the later design, calculation and performance-related parts so that the same system concepts are understood consistently across projects and documents.

How the system family is organised

The systems covered by this series are integrated into building enclosure surfaces and use water as the primary heat transfer medium for heating or cooling. In general technical terms, these solutions are chosen for thermal comfort in residential, office, public, commercial and industrial buildings. Their behaviour depends not only on the pipework or embedded components, but also on the surface construction, installation method and heat transfer path.

What this part distinguishes

• EN 1264-1 identifies the system types and their characteristics.
• The EN 1264 series also considers the use of other heating media instead of water where appropriate.
• Design and operational aspects for types A, B, C, D, H, I and J are covered in EN 1264-3 and EN 1264-4.
• Types E, F and G are covered by the EN ISO 11855 series.
• Suspended-ceiling systems with an open air gap that enables thermally induced air circulation are outside the scope of this series.

Practically, this part works as a terminology and classification reference rather than a design manual. It supports consistent naming of radiant heating and cooling systems and provides the conceptual framework used when thermal output is calculated, tested and translated into technical specifications within the EN 1264 family.