This European Standard specifies the requirements and test methods for the construction, the safety and the
rational energy usage of an assembly made up of a boiler body complying with EN 303-1 1) and a forced
draught gas burner complying with EN 676, using combustible gases, hereafter referred to as a "boiler".
This European Standard applies to standard boilers and low-temperature boilers with a nominal heat output
not exceeding 1000 kW and with a water temperature at normal operation not exceeding 105 °C.
This European Standard does not contain all the necessary requirements for:
assemblies designed as units ;
condensing boilers;
boilers intended to be installed in the open ;
boilers permanently fitted with more than one flue outlet ;
boilers fitted with a draught diverter ;
boilers intended to be connected to a common flue having mechanical extraction.
This European Standard does not apply to living-space dedicated boilers (see 3.6).
If the boiler body has already been tested with a liquid fuel burner, in accordance with EN 303-1, EN 303-2
and EN 304, only the tests described in annex G need to be performed.
In the case of a range of boilers, see annex F.
This European Standard only covers type testing.
Die Norm enthält Anforderungen an und Prüfungen von Zusammenbauten aus Kesseln gemäß ÖNORM EN 303-1 und Gebläsebrennern gemäß ÖNORM EN 676 (dzt. Entwurf) bis einschließlich 300 kW Nennwärmebelastung. Diese ÖNORM enthält die Europäische Berichtigung AC:2006 mit der Tabellen 5 und 6 korrigiert werden.