NS EN 297:1994被替代
Gas-fired Central Heating Boilers - Type B11 And B11bs Boilers, Fitted With Atmospheric Burners Of Nominal Heat Input Not Exceeding 70 Kw
出版：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Specifies the requirements and test methods for the construction, safety, fitness for purpose, rational use of energy, classification and marking of gas fired central heating boilers.
SS EN 297:1994 - Identical
UNE EN 297:1995 - Identical
NF EN 297:1994 - Identical
I.S. EN 297:1994 - Identical
UNI EN 297:1996 - Identical
NBN EN 297:1994 - Identical
BS EN 297:1994 - Identical
DIN EN 297 (2005-10) - Identical
ONORM EN 297:2006 - Identical
NEN EN 297:1994 - Identical
SN EN 297:1998 - Identical
UNI EN 297:2007 - Identical
