Description
The Weil McLain 383-500-126 Outdoor Temperature Sensor measures external air temperature and sends a resistance-based signal to the boiler control for system adjustment. It uses a thermistor element that changes resistance according to ambient conditions, allowing the controller to interpret outdoor temperature values accurately. Within HVAC systems, it is mounted on an exterior wall away from heat or direct sunlight to capture real climatic readings. Its signal allows the control system to adjust heating output based on outdoor conditions, improving efficiency and matching indoor heating demand to weather changes.
