The Viessmann Neutralization Unit WB1/WB2, part number 7134231, is a condensate treatment component designed for use with gas-fired condensing boilers. It neutralizes acidic condensate produced during operation, helping protect drainage systems and piping from corrosion.
This unit uses a granulate-based neutralization process that raises condensate pH to a safer level before discharge. The horizontal installation design allows for wall or floor mounting, and it integrates into condensate drainage lines to ensure consistent treatment during boiler operation.
What’s Included: Neutralization unit housing, internal neutralization media chamber, and mounting brackets
Installation Limits: Must be installed horizontally below the boiler condensate outlet with proper slope and drainage; requires non-metallic piping and protection from freezing conditions
Compatibility: Compatible with Viessmann Vitodens and related condensing boiler models within WB1 and WB2 series ranges