VDI 4704:2014-07 (R2018)

Owing to the increasing complexity of modern hot-water heating installations, the specifications given in the series of standards VDI 2035 and VDI 4708 must be observed for function, energy efficiency and service life to conformally meet the requirements. The standard provides the concept for a training intended for all technical personnel involved in planning, erecting, operating and maintaining hot-water heating installations. Training categories are defined for various target groups with given required professional experience, specifying the syllabus and boundary conditions. Ongoing qualification in the fields of water quality, scaling, water-caused corrosion, pressure retention, de-aeration and degassing are expected to reduce the likelihood of damage to installation components and malfunctions.