What is BS EN 15250 – Slow heat release appliances fired by solid fuel about?
BS EN 15250 is a European Standard that discusses the requirements and test methods for residential slow heat-releasing appliances. The main objective of BS EN 15250 is to provide the best industry requirements and test methods to demonstrate safe and efficient use of the appliances.
BS EN 15250 specifies requirements relating to the design, manufacture, construction, safety and performance (efficiency and emission) instructions and marking together with associated test methods and test fuels for type testing residential slow heat release appliances fired by solid fuel.
BS EN 15250 is applicable to hand fuelled intermittent burning slow heat release appliances having thermal storage capacity such that they can provide heat for a declared period of time after the fire has gone out.
BS EN 15250 also specifies a minimum time period from the appliance achieving the maximum differential surface temperature and falling to 50 % of that maximum value. These appliances provide heat into the space where they are installed.
Note: BS EN 15250 is not applicable to mechanically fed appliances, appliances having fan assisted combustion air or appliances with boiler.
Who is BS EN 15250 - Slow heat release appliances fired by solid fuel for? 
BS EN 15250 on slow heat release appliances fired by solid fuel is relevant to: 
- Manufacturers of slow-fired heating appliances
- Anyone involved in commissioning, design, operation, installation and maintenance of slow heat release appliances
- Quality control and testing personnel
Why should you use BS EN 15250 - Slow heat release appliances fired by solid fuel?
Residential practices usually do not require large scale heat generation. In such cases, slow-heating appliances are a better fit. Given the nature of operations, it is not unlikely to encounter incidents of improper circulation of smoke from the fireplace or temperature increase in solid fuel storage and improper regulation of ashes, if not maintained properly. Hence, it is vital that slow heat release appliances demonstrate that they are fit for purpose.
In this regard, BS EN 15250 provides the best industry guidance on requirements of materials, design and construction of slow fired heating appliance using solid fuels. Installation and operation instructions are also covered.
Safety guidance in terms of electrical components as well as temperature rise in the fuel storage container, operating components and adjacent combustible materials is also discusses in BS EN 15250.
BS EN 15250 also provides guidance on test methods to analyze the performance of the appliance in terms of appropriate flue gas temperature, carbon monoxide emission, flue draught and thermal storage capacity.
As a result, if you are a manufacturer of slow heat release appliances, complying with BS EN 15250 requirements and test methods can help you to determine whether your products are safe, reliable and effective at the point of use.
