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.
How boiler overloads can damage boilers? What causes vibration, and can vibration cause failure to boilers? What do you understand by boiler failure due to âexternal loadingâ?Describe the various possible scenarios that may lead to the collapse of a plain furnace in a solid-fuel boiler. Recommend the methods to prevent furnace walls from failure.