BS EN 1264-1-2021 PDF

Full title and description

BS EN 1264-1:2021 — Water based surface embedded heating and cooling systems. Definitions and symbols. This part of the EN 1264 series defines terminology, system types and graphical/character symbols used for water‑based surface‑embedded heating and cooling systems (floors, walls, ceilings) used for thermal comfort in buildings.

Abstract

Part 1 of EN 1264 provides a harmonised vocabulary, classification of system types and the set of symbols and notations used across the EN 1264 series. It is intended to ensure consistent specification, testing and documentation of water‑based surface‑embedded heating and cooling systems and to act as the normative reference for subsequent parts on thermal output, dimensioning and installation.

General information

• Status: Current (BS adoption of EN 1264‑1:2021); supersedes BS EN 1264‑1:2011.
• Publication date: 28 May 2021.
• Publisher: British Standards Institution (BSI) — published as a British Standard adopting EN 1264‑1:2021.
• ICS / categories: 01.040.91; 01.075; 91.140.10 (construction vocabularies, character symbols, central heating systems).
• Edition / version: 2021 edition (BS EN 1264‑1:2021).
• Number of pages: 34 pages (BS publication).

Scope

The standard applies to water‑based surface‑embedded heating and cooling systems embedded into the room enclosure surfaces (floors, walls, ceilings) in residential, office and other buildings used for thermal comfort. It defines system types, symbols and basic characteristics; it does not specify design calculation or installation details (which are covered in other parts of EN 1264 and, for some system types, EN ISO 11855). The standard also notes applicability where a different heat‑transfer medium is used in place of water.

Key topics and requirements

• Standardised definitions and terminology for surface‑embedded heating and cooling systems.
• Classification of system types (identification of types A–J and reference to EN ISO 11855 where applicable).
• Graphical and character symbols for drawings, schematics and product documentation.
• Reference framework for determining thermal output, dimensioning and installation in companion parts EN 1264‑2, EN 1264‑3 and EN 1264‑4.
• Applicability limits (e.g., excludes suspended ceiling systems with a designed open air gap; notes alternative test methods where appropriate).

Typical use and users

Used by building services engineers, system manufacturers, test houses, architects, specifiers, product certification bodies and standards writers. Typical applications include specification and documentation of underfloor heating/cooling, ceiling and wall‑integrated hydronic systems in residential, commercial and public buildings. The part is mainly a normative vocabulary and symbol set used alongside the technical parts of the EN 1264 series.

Related standards

Other parts of the EN 1264 series (notably EN 1264‑2: methods for thermal output determination, EN 1264‑3: dimensioning, EN 1264‑4: installation) and, for certain system types, the EN ISO 11855 series. Standards for thermal output testing such as EN 14037 and EN 14240 are referenced where applicable.

Keywords

Underfloor heating, floor cooling, ceiling heating, wall heating, radiant systems, hydronic systems, definitions, symbols, vocabulary, thermal output, EN 1264.

FAQ

Q: What is this standard?

A: BS EN 1264‑1:2021 is the British adoption of EN 1264‑1:2021; it provides definitions, system classification and the set of symbols used for water‑based surface‑embedded heating and cooling systems.

Q: What does it cover?

A: It covers vocabulary, system types and graphical/character symbols for hydronic (water‑based) surface‑embedded heating and cooling systems in floors, walls and ceilings; it does not give detailed design or installation procedures (these are in other parts of EN 1264).

Q: Who typically uses it?

A: Engineers, architects, manufacturers, test laboratories, certification bodies and specifications writers who need a harmonised terminology and symbol set for documentation, drawings and cross‑referencing within the EN 1264 series.

Q: Is it current or superseded?

A: Current — the 2021 edition supersedes BS EN 1264‑1:2011. Check national standards bodies for the latest status or amendments.

Q: Is it part of a series?

A: Yes — EN 1264 is a multi‑part series. Part 1 is definitions and symbols; Parts 2–4 and related EN ISO 11855 parts cover thermal output determination, dimensioning and installation.

Q: What are the key keywords?

A: Underfloor/ceiling/wall heating, radiant cooling, hydronic systems, vocabulary, symbols, thermal output, EN 1264.