What is BS EN 1264‑2 about?
BS EN 1264‑2 is the second part of the EN 1264 multi-series. The EN 1264 series gives guidelines for surface embedded heating and cooling systems installed in buildings, residential and non-residential (e.g., office, public, commercial and industrial buildings). BS EN 1264‑2 focuses on systems installed for the purpose of thermal comfort.
BS EN 1264‑2 specifies standardized product characteristics by calculating and testing the thermal output of heating for technical specifications and certification.
BS EN 1264‑2 gives guidelines for water-based heating and cooling systems embedded into the enclosure surfaces of the room to be heated or to be cooled. It also specifies the use of other heating media instead of water, as appropriate.
Note: BS EN 1264‑2 series does not specify ceiling systems mounted in a suspended ceiling with a designed open-air gap between the system and the building structure which allows the thermally induced circulation of the air.
Who is BS EN 1264‑2 for?
BS EN 1264‑2:2021 on water-based surface embedded heating and cooling systems
Part 2: Floor heating: (Methods for the determination of the thermal output using calculations and experimental tests) is useful for:
- Commercial HVAC manufacturers
- Underfloor Heating System Manufacturer
- Pipe Manufacturer
- Plumber
Why should you use BS EN 1264‑2?
You need a reliable testing method to get accurate readings for your thermal output. In the field of commercial trade, the thermal output of heating and cooling systems represents the basis of this rating. To be able to evaluate and compare different heating and/or cooling systems, it is, therefore, necessary to refer to values determined using one single method. The basis for doing so is the test methods for the determination of the thermal output of floor heating systems specified in BS EN 1264‑2
BS EN 1264‑2 provides you with the boundary conditions and the test methods for the determination of the thermal output of hot water floor heating systems as a function of the temperature difference between the heating medium and the room temperature. The thermal output is tested by a calculation method and by a measurement method.
BS EN 1264‑2 informs on the materials required for floor heating systems and their appropriate thermal output temperatures. The test results in BS EN 1264‑2 depend on further parameters. These are - the standard specific thermal output, and the associated standard temperature difference, between the heating medium and the room temperature. Fields of characteristic curves showing the relationship between the specific thermal output and the temperature difference between the heating medium and the room are also included.
What’s changed since the last update?
BS EN 1264‑2:2021 supersedes BS EN 1264‑2:2008+A1:2012, which is withdrawn. Significant changes between BS EN 1264‑2:2021 and BS EN 1264‑2:2008+A1:2012. are as follows:
- Clarification of the Scope
- Deletion of Clause 10, the Test procedure for the determination of the effective thermal resistance of carpets and all references to this Clause
- ‘Heat conductivities for materials’ was moved to the new Annex C and was modified
- Addition of new Clause 12, Calculation of the specific heat capacity of the system (C-Value).
- Modification of the Title
