The CE mark, or formerly EC mark, is a mandatory conformity marking for certain products sold within the European Economic Area (EEA) since 1985. The CE marking is also found on products sold outside the EEA that are manufactured in, or designed to be sold in, the EEA.
Condensing boilers are water heaters fueled by gas or oil. They achieve high efficiency (typically greater than 90% on the higher heating value) by condensing water vapour in the exhaust gases and so recovering its latent heat of vaporisation, which would otherwise have been wasted.
Boiler s Operation Philosophy. The primary function of the boiler is to produce the steam in sufficient quantities to meet the needs of the plant. In order to do this, the boiler requires fuel, air and water at all the times during operation. The heat released during the combustion of the fuel produces steam from the water. In most cases, the steam is heated further before leaving the boiler.