Article 1
The product group ‘water-based heaters’ shall comprise products that are used to generate heat as part of a water-based central heating system, where the heated water is distributed by means of circulators and heat emitters in order to reach and maintain the indoor temperature of an enclosed space such as a building, a dwelling, or a room, at a desired level. The heat generator generates heat by means of one or more of the following processes and technologies:
combustion of gaseous, liquid or solid fossil fuels;
combustion of gaseous, liquid or solid biomass;
use of the Joule effect in electric resistance heating elements;
capture of ambient heat from air, water or ground source, and/or waste heat;
cogeneration (the simultaneous generation in one process of heat and electricity);
solar energy (auxiliary).
The following products are excluded from the scope of this product group:
heaters whose primary function is to provide hot drinking or sanitary water;
heaters for heating and distributing gaseous heat transfer media such as vapour or air;
cogeneration space heaters with a maximum electrical capacity of 50 kW or above;
space heaters that combine both indirect heating, using water-based central heating system, and direct heating, by direct emission of heat into the room or space where the appliance is installed.