Multi-part Document
BS EN 15502 - Gas-fired central heating boilers

This is a multi-part document divided into the following parts:

• Part 1 Gas-fired heating boilers. General requirements and tests
• Part 2-1 Gas-fired central heating boilers. Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW
• Part 2-2 Gas-fired central heating boilers. Specific standard for type B1 appliances
• Part 2-3 Gas-fired central heating boilers. Specific standard for hybrid units combining a gas-fired boiler and an electrical heat pump in a product