BS EN 303-5:1999 Heating boilers - Heating boilers with forced draught burners - Heating boilers for solid fuels, hand and automatically fired, nominal heat output of up to 300 kW - Terminology, requirements, testing and marking
This standard applies to heating boilers up to a nominal heat output of 300 kW which are designed for the burning of solid fuels only and are operated according to the instructions of the boiler manufacturer either with negative pressure or with positive pressure in the combustion chamber.
Solid fuels in this standard are:
a) biogenic types of fuel:
wood in natural state in form of
A - log wood with water content w < 25 %;
Bl - chipped wood (wood chipped by machine with and without bark, usually up to a maximum length of 15 cm) water content from w > 15 % to<35%;
B2 - chipped wood as under B1, except w > 35 %;
C - compressed wood (briquettes and pellets without binding agents, made of wood and/or bark particles; permitted are natural binding agents such as molasses, vegetable paraffins and starch);
D - sawdust w > 20 % to < 50 %;
b) fossil types of fuel:
a - bituminous coal;
b - brown coal;
c - coke;
d - anthracite.
The boilers can be used with natural draught or forced draught.
The stoking can be manual or automatic.
The regulations of this standard apply to heating boilers which are to be tested on an accepted boiler test stand.
Heating boilers in accordance with this standard are designed for central heating installations whose heat carrier is water and whose maximum allowable operating temperature is 100 ℃ and which can operate at a maximum allowable operating pressure of 6 bar. For heating boilers with a built-in or attached water heater (storage or continuous flow heater) this standard only applies to those parts of the water heater which are necessarily subject to the operating conditions of the heating boiler (heating part).
The standard does not apply to
—central heating boilers and other heating appliances which do not have minimum heat loss within the requirements of the standard and which are also designed for the direct heating of the place of installation;
—cooking appliances;
—the design and construction of automatic stoking devices.
The purpose of this standard is to specify the necessary terminology for solid fuel heating boilers, the design requirement, the technical heating requirements (taking into account the environmental requirements) and testing, as well as the marking requirements.
BS EN 303-5:1999 history
2023BS EN 303-5:2021+A1:2022 Heating boilers - Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW. Terminology, requirements, testing and marking
2022BS EN 303-5:2021 Heating boilers - Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW. Terminology, requirements, testing and marking
2012BS EN 303-5:2012 Heating boilers. Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW. Terminology, requirements, testing and marking
1999BS EN 303-5:1999 Heating boilers - Heating boilers with forced draught burners - Heating boilers for solid fuels, hand and automatically fired, nominal heat output of up to 300 kW - Terminology, requirements, testing and marking