NS EN 677 Ed. 1 (1998)被替代
Gas-fired Central Heating Boilers - Specific Requirements For Condensing Boilers With A Nominal Heat Input Not Exceeding 70 Kw
出版：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Applicable to gas-fired central heating boilers, known as "condensing boilers" of types B (not including appliances without a fan) and to those using one or more gases corresponding to the three gas families and where the nominal heat input is not in excess of 70 kW.
SS EN 677 Ed. 1 (1998) - Identical
UNE EN 677:1998 - Identical
BS EN 677:1998 - Identical
NEN EN 677:1998 - Identical
SN EN 677:1999 - Identical
DIN EN 677 (1998-08) - Identical
ONORM EN 677:1998 - Identical
NF EN 677:1998 - Identical
NBN EN 677:1998 - Identical
UNI EN 677:2000 - Identical
I.S. EN 677:1998 - Identical
