Viessmann 100 WB1C Series. Viessmann 100 WB1KC Series. Viessmann 100-W WB1B Series. Viessmann 100-W WB1C. 100 WB1C 26kW Combi – GC No. 47-819-20 (7499425). 100 WB1C 30kW Combi – GC No. 47-819-21 (7499427).
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