Gas-fired central heating boilers. Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exeeding 70 kW
NORM herausgegeben am 1.6.1996
Designation standards: ČSN EN 297
Classification mark: 075397
Catalog number: 19573
Note: UNGÜLTIG
Publication date standards: 1.6.1996
Approximate weight : 367 g (0.81 lbs)
Country: Czech technical standard
Kategorie: Technische Normen ČSN