Viessmann VITOCROSSAL 200 Service Instructions Manual page 70

Gas condensing boiler with matrix cylinder burner for natural gas e and ll type ct2

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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 mate-

rials and the materials of the other heat-

ing equipment components. We recom-

mend you refer questions regarding

water quality/treatment to an appropriate

specialist.

Further details can be found in VDI

Directive 2035-2 and EN 14868.

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Vitocrossal 200 ct2