scope:

This document specifies the requirements for the installation and commissioning of water-based heating, cooling and domestic hot water preparation (DHW) systems in buildings with a maximum operating temperature of 110°C.

This document does not cover superheated water systems and steam systems.

This document covers the system's requirements for the installation and commissioning of individual components of the system (e.g. heat generators, pumps, controls). It does not cover the specific commissioning requirements for these components (e.g. how to set fuel/air ratio on a boiler).

This document does not cover the installation or commissioning of attached systems (e.g. air conditioning, domestic hot water distribution, ventilation systems).

This document covers only the technical requirements, and does not cover any commercial or contractual arrangements between parties.