Will fit: VIESSMANN VITODENS WB2B 200-W COMBI 26KW BOILER. VIESSMANN VITODENS WB2B 200-W COMBI 30KW BOILER. Products will not be covered if misused or not serviced as per maintenance instructions. Nagi House, Alperton Lane, Wembley, HA0 1DX.
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