Regelwerk
Gasfachliche Norm DIN EN 509 Entwurf
2021-04
Dekorative Gasgeräte mit Brennstoffeffekt
between the ignition burner gas valve, the start gas valve or main gas valve, as applicable, being energized and the ignition burner gas valve, the start gas valve or main gas valve, as applicable, being [...] pressure for the gas family or gas group to which the reference gas belongs (see 7.1.4)…