DS 452:2013/Ret.1:2018

Thermal insulation of technical service and supply systems

The standard applies to thermal insulation of building installations, such as heating, ventilation, cooling, solar heating and domestic water systems, as well as to thermal insulation of industrial plants, including process and supply plants. The standard also applies to installations in the open air.*It includes all parts of the installation, including flat and curved surfaces on e.g. ducts and pipe systems, valves, fittings, installation units, aggregates, fans and tanks.*The standard does not apply to insulation of building structures or cold rooms or to insulation of district heating supply lines. The boundary between district heating system and building installation is at the district heating system's main taps, so that branch lines and main taps belong to the district heating system. The standard also applies to pipes between buildings.*The standard does not apply to the insulation of boilers and heat pumps.*The standard does not address the fire engineering requirements. For installations where there are also fire-technical requirements, they must be met.*The standard is designed for installations with operating temperatures between – 40 °C and + 650 °C. However, the standard can be used in a somewhat wider temperature range with the modifications that are conditioned by the special conditions. The standard is not adequate at extremely low or high operating temperatures.*Note: Regarding insulation of district heating lines see DS/EN 253*Note: Regarding boilers see DS/EN 303*Note: Regarding determination of performance of heat pumps see*DS/EN14511 and DS/EN 14825*Note: Regarding fire protection of ventilation systems see*DS 428: Norm for fire technical measures at ventilation system.