Viessmann VITOCROSSAL 200 Service Instructions Manual page 65

Water quality requirements
Where chemicals are used as part of
the corrosion protection, we recom-
mend that the manufacturer of the
chemicals issues a certificate of suit-
ability of the additives with regard to
the boiler materials and the materials
of the other heating equipment com-
ponents. We recommend you refer
questions of water quality/treatment
to an appropriate specialist.
Commissioning /service report
(cont.)
Further details can be found in the
VDI Directive 2035-2 and in EN
14868.
65