scope:

This International Standard is part of a series of standards on the method for calculation of system energy losses and system efficiencies of space heating systems and domestic hot water systems, and also for cooling and ventilation if required. The scope of this specific part is to standardise the: ? required inputs, ? calculation method, and ? resulting outputs for space heating generation by combustion sub-systems (boilers) including control. This International Standard is the general standard on generation by combustion sub-systems (boilers) for oil, gas, coal and biomass burning. This International Standard is also intended for the case of generation for both domestic hot water production and space heating.