Viessmann VITOPLEX 300 Service Instructions Manual page 24

Water quality requirements
Water quality requirements
(cont.)
Where chemicals are used as part of the
corrosion protection, we recommend
that the manufacturer of the chemicals
issues a certificate of suitability of the
additives with regard to the boiler
materials and the materials of the other
heating equipment components. We
recommend you refer questions of water
quality/treatment to an appropriate
specialist.
Further details can be found in VDI
Directive 2035-2 and EN 14868.
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