VDI 2035 Blatt 2:2009-08 (R2014)

Guideline VDI 2035 Part 2 applies to water heating installations according to EN 12828 within a building when the flow temperature under correction operation is not intended to exceed 100 °C. The guideline also applies to heat contracting in which building complexes are supplied with heat, provided it is ensured that over the service life of the installation the volume of the make-up water will not exceed double the volume of the initial filling water. If this is not the case then reference should be made to worksheet AGFW FW 510 or data sheet VdTÜV MB TECH 1466, as with industrial and district heat heating systems. The present guideline provides information and in individual cases formulates requirements regarding reduction of the probability of water-side corrosion in water heating installations.