Best practice also encourages the use of a Fernox Magnetic Scale Reducer on all new boiler installations as the reduction of scale will lead to longer life of system components.
Part L of the Building Regulations (England and Wales)
Part L of the Building Regulations (England and Wales) states that in hard water areas which exceed 200ppm, provision should be made to treat feed water to water heaters and hot water circuits of combination boilers to reduce the rate of limescale formation as well as limiting its harmful effects on energy efficiency. One way to comply with this legislation is to install a Fernox Magnetic Scale Reducer.
Another would be to install either the Monarch Water Scaleout XP or the Monarch Water Combiclean. The Scaleout XP is unique in that it not only prevents the formation of limescale it also aids the breakdown and removal of existing scale within a components on a system. Read more about HERE.