Will fit: VIESSMANN VITODENS WB2B 200-W SYSTEM 19KW BOILER. VIESSMANN VITODENS WB2B 200-W SYSTEM 26KW BOILER. VIESSMANN VITODENS WB2B 200-W SYSTEM 30KW BOILER. Products will not be covered if misused or not serviced as per maintenance instructions.
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