OEM part number

7858492 Heat exchanger cleaning tool

Viessmann part 7858492. Listed for 0 models below.

Viessmann Vitodens 200-W B2HE condensing boiler

Heat exchanger cleaning tool. Fits the whole series.

Viessmann tool for clearing gaps between coils

Source: Viessmann Vitodens 200-W B2HE 85/120/150/199 Service Instructions 6167 813-24 (09/2026), page 30. Full Vitodens 200-W B2HE parts list

Part numbers are taken from the manufacturer’s published repair parts documents and are listed so you can identify the right part. Manufacturers replace and supersede numbers over time, so confirm the number with your distributor before you order, and use factory-authorized parts on equipment under warranty. Replacing gas, electrical and refrigerant parts is work for a licensed technician. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.