VIESSMANN VITODENS 100WB1B 19KW HEAT ONLY BOILER. Will fit: VIESSMANN VITODENS 100WB1B 13KW HEAT ONLY BOILER. VIESSMANN VITODENS 100WB1B 16KW HEAT ONLY BOILER. Products will not be covered if misused or not serviced as per maintenance instructions.
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