Viessmann 7427419 323080-701 Always verify the Honeywell Q3451B1103

Always verify the Honeywell Q3451B1103 part number on your existing assembly before replacement

Common Questions: What boiler models are compatible with this kit

the VS series valve body and high-temperature AH series actuators are required

This 170 degree limit switch is a direct replacement for part number 11J11R00306-002

Broad Compatibility: Engineered for seamless integration with Johnson Controls D-3244 and D-3246 series actuators

Viessmann 7427419 323080-701 Always verify the Honeywell Q3451B1103The Viessmann 7427419 is a direct OEM Control Console WB1B 26 engineered specifically for the Vitodens 100 W series condensing boilers. As a critical interface for the WB1B 26 boiler control system, this unit facilitates precise modulation and operational oversight, ensuring the hydronic system maintains peak thermal efficiency. The console features a technical digital display for boiler diagnostics and manual rotary selectors for adjusting heating