Viessmann 7820148 Sensor 320788-704 This critical boiler replacement part

This critical boiler replacement part features a 1-inch diameter and a length of 21-3/4 inches

this dual voltage capacitor is compatible with both 370V and 440V systems

or a drop in the DC microamp signal below the controller's threshold despite a healthy visible flame

allowing for seamless integration into Lennox residential AC units and heat pumps without the need for extensive piping modifications

This 120VAC coil is designed for standard line voltage control circuits commonly found in industrial furnace and boiler controls

Viessmann 7820148 Sensor 320788-704 This critical boiler replacement partThe Viessmann 7820148 Sensor serves as the primary outdoor temperature sensor for weather responsive heating systems, enabling critical compensation logic for gas condensing boilers. Engineered for high accuracy ambient monitoring, this NTC thermistor ensures the Vitotronic 200 and 300 control units can dynamically adjust the heating curve based on real time meteorological data. By integrating this OEM replacement part, technicians can resolve common