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The HONEYWELL SILENT KNIGHT STS-5.0 is a 5-foot air sampling tube designed for use with duct and beam smoke detection systems. Air sampling tubes extend into HVAC ductwork to draw air samples to the detector head, enabling the system to sense smoke or combustion byproducts moving through the air stream. This component is sold as a single unit and is installed by licensed fire alarm technicians as part of a listed duct detector assembly. It serves a critical function in commercial and light industrial life-safety systems where early smoke detection in air handling units is required.
The STS-5.0 is suited for installation in duct smoke detector applications where a 5-foot sampling tube length is required. This length is typically selected for medium to large duct cross-sections where the tube must reach across the duct interior to achieve adequate air sampling coverage. It is commonly used in commercial HVAC installations, air handling unit applications, and anywhere duct smoke detection is mandated by fire code.
Designed as an OEM-style accessory for use with HONEYWELL SILENT KNIGHT duct and beam smoke detector assemblies requiring a 5-foot air sampling tube.
Installation must be performed by a licensed fire alarm technician in accordance with NFPA 72 and the detector manufacturer's listed installation instructions. Before servicing the duct detector assembly, shut down the associated air handling unit and notify the monitoring station or authority having jurisdiction as required. Ensure the tube is properly seated and secured in the detector housing and that all duct penetrations are sealed per the listing requirements. Do not operate the detector without the sampling tube properly installed.
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