NBN EN 297:1994

Gas-fired central heating boilers - Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW

WITHDRAWN

About this standard

Languages
English, French and Dutch
Type
NBN
Standards committee
CEN/TC 109
Status
WITHDRAWN
Publication date
26 August 1994
Replaced by
NBN EN 15502-2-2:2014
Amended By
NBN EN 297/A6:2003, NBN EN 297/A2:1996, NBN EN 297/A5:1998, NBN EN 297/A3:1997, NBN EN 297/A4:2005
Corrected By
NBN EN 297/A2/AC:2006
ICS Code
91.140.10 (Central heating systems)
Withdrawn Date
06 March 2023

About this training

Summary

This European Standard 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, hereafter referred to as ' boilers' . This standard applies to type B11 and BB11BS boilers: - fitted with atmospheric burners - that use gases corresponding to the three gas families and to the pressures stated in 4.1.4 - that have a nominal heat input not exceeding 70 kW (on net calorific value) - where the temperature of the water does not exceed 95 øC during normal operation - where the maximum water-side operating pressure does not exceed 6 bar. This standard does not contain all the necessary requirements for: boilers: - intended to be installed in the open - having multiple heating units with a single draught diverter - with fan-assisted combustion - of the condensing type i- ntended to be connected to a common flue having mechanical extraction - fitted with manual or automatic means of adjusting the air supply and/ or adjusting the evacuation of the combustion products - of the combination type (central heating and domestic hot water production) appliances: - combining the functions of an independent space heater and a hot water generator for central heating. This standard only covers type testing.