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Installing this in a natural gas system will result in improper combustion and potential safety hazards
A trip is typically triggered by restricted airflow
For technicians replacing legacy components
these genuine Watts replacement parts provide the industrial resilience required for high-pressure installations
5" conduit connection simplify integration into existing HVAC control systems
System Sensor D4120W Detector Freon Installing this in a naturalThe 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