TS EN 1264-1

TS EN 1264-1 is the terminology and symbol part of the family of water based surface embedded heating and cooling systems. From the title and scope, this document is centred on hot water floor heating systems and the common technical language used for them, with residential buildings, offices and other buildings of comparable use included in the application area. As a Part 1 document, it establishes definitions and symbols rather than describing a full design method on its own.

What the terms and symbols are for

Floor heating and cooling systems combine pipework, heat transfer fluid, the floor build-up and the way heat is distributed across the surface. In this context, water based means that hot water is the heat transfer medium, while surface embedded indicates that the relevant elements are placed within the floor structure. A terminology standard gives all parties a shared vocabulary, which is especially important where drawings, specifications, product literature and project documentation must use the same technical meanings.

Technical context for this part

The scope stated for this document is limited to hot water floor heating systems, and it also extends to certain non-residential buildings when their use corresponds to that of residential buildings. Within the broader field of heating and cooling standards, this part serves as the terminology layer for embedded floor systems, helping users interpret the names and symbols that appear across the standard’s family. Used together with TS EN 1264-3, it supports a more consistent understanding of the system set as a whole.