BS EN 14336:2025

This document specifies the requirements for the installation and commissioning of water-based heating, water-based cooling, and heating of domestic hot water (DHW) systems in buildings with a maximum operating temperature of 105 °C. This document is applicable to the commissioning of systems as a whole, in cases of new systems, renovations and replacement of equipment. This document does not apply to superheated water systems or steam systems and it does not apply to the specific commissioning requirements for individual components (e.g. how to set fuel/air ratio on a burner). Also, it does not apply to the installation or commissioning of attached systems (e.g. air conditioning, domestic hot water distribution, ventilation systems). This document specifies only technical requirements but it does not specify any commercial or contractual arrangements between parties.