Heating boilers - Part 2: Heating boilers with forced draught burners; special requirements for boilers with atomizing oil burners; German version EN 303-2:1998— 9 стр.
91.140.10 Central. Including burners and boilers for central heating systems / Системы центрального отопления. Включая горелки и котлы для систем центрального отопления
