System Sensor dst5 Duct Sampling Tube 4 to 8 Ft

Product Description

The SYSTEM SENSOR dst5 is a metal duct sampling tube designed for use with HVAC duct smoke detection and monitoring systems. The tube spans duct widths from 4 to 8 feet, drawing air samples from across the duct cross-section and delivering them to a connected duct smoke detector. This type of sampling tube is a core component in any duct-mounted smoke detection setup, ensuring that air drawn from the supply or return air stream reaches the detector's sensing chamber reliably. Licensed HVAC technicians and fire alarm system installers typically handle this component as part of a code-required smoke control or detection installation.

The dst5 is suited for commercial and residential HVAC applications where duct smoke detectors are required by NFPA 72, the International Mechanical Code, or local fire codes. It is specifically listed for use with DNRHS duct smoke detector housings. The adjustable length accommodates a range of duct widths from 4 to 8 feet, reducing the need for field cutting or custom fabrication in many standard duct sizes. This makes it a practical replacement or new-installation component in air handling units, fan coil units, and built-up air handling systems.

Key Features

• Metal construction for durability in duct environments
• Adjustable length covers duct widths from 4 to 8 feet
• Compatible with DNRHS duct smoke detector housings
• Draws air samples across the full duct cross-section for reliable detection
• Reduces field modification in standard commercial duct sizes

Compatibility

Designed for use with DNRHS HVAC duct smoke detection and monitoring systems, as stated by the manufacturer. Verify detector housing compatibility before installation.

Installation Notes

Installation of duct smoke detection components is typically performed by licensed HVAC technicians or fire alarm system contractors in accordance with NFPA 72 and local mechanical codes. Shut down the air handling unit and de-energize associated control circuits before installing or servicing the sampling tube. Ensure the tube is inserted fully and seated correctly in the detector housing before restoring power and confirming system operation with the authority having jurisdiction.