Addressable Duct Sampling Unit

The Addressable Air Duct Sampling Unit provides early detection of smoke in the air moving through heating and ventilation (HVAC) ducts in commercial and industrial premises. It has been designed to monitor levels of smoke in air ducts operating at airspeeds of 0.5 to 20 meters per second.

The unit can be fitted to any wall of a ventilation duct and has two tubes that extend into the duct through punched holes. The perforated sampling tube is placed in the airflow upstream of the exhaust tube which causes a pressure differential in the duct detector. Air is sucked up the sampling tube, across the detector, and exhausted back into the air duct.

• Both sampling and exhaust pipes are fitted to the backbox without the need for tools.
• The cover of the duct smoke detector is monitored to ensure working integrity and if removed, causes a fault.
• Easily accessible wire clamping terminals ensure secure and fast termination.
• Clear cover means the alarm LED on the detector is visible at all times.
• Unique self-sealing test port allows the dispensing of test smoke via a needle without the need to remove the cover.
• Sampling pipes are available in 4 lengths.

Approvals: AS 1603.13:2018