DS EN 303-7:2006
DS EN 303-7:2006 Heating Boilers - Part 7: Gas-Fired Central Heating Boilers Equipped With A Forced Draught Burner Of Nominal Heat Output Not Exceeding 1000 Kw Defines the requirements and test methods for the construction, the safety and the rational energy usage for gas-fired central heating boilers equipped with a forced draught burner.