and counterclockwise (CCW) rotation

By replacing the field-serviceable cartridge rather than the entire unit

Key Benefits for Technicians Precise Thermal Calibration: Factory-set to open at 120°F and close at 100°F for consistent cycling and safety

supporting optimal combustion efficiency and reliable ignition cycles during high-demand operation

Designed with 1" NPT quick hook-up fittings

Viessmann 7134328 Circuit Board 323269-701 and counterclockwise (CCW) rotationThe Viessmann 7134328 is a critical VR20 control board specifically engineered for Vitodens 200 WB2 and WB2A series gas condensing boilers. Functioning as a high precision communication interface, this replacement circuit board facilitates data transfer between the LGM 29 burner control unit and the main system sensors. It is essential for managing boiler fault codes such as A1, A4, and outdoor temperature sensor malfunctions. Field replacement