System Sensor D4120W Detector Freon A trip is typically triggered

A trip is typically triggered by restricted airflow

This switch is compatible with a wide range of York-family furnaces requiring a 0

5" conduit connection simplify integration into existing HVAC control systems

For technicians replacing legacy components

replacing the entire 1720-007 assembly is the best practice to ensure total system integrity and pressure-tight operation

System Sensor D4120W Detector Freon A trip is typically triggeredThe System Sensor D4120W is a high performance 4 wire photoelectric duct smoke detector specifically engineered for harsh environments and outdoor rooftop HVAC installations. This air duct smoke detector features a NEMA 4 watertight enclosure, providing superior protection against windblown dust, rain, and splashing water. Utilizing integrated low flow technology, the unit operates efficiently in airflow speeds ranging from 100 to 4,000 feet per