Siemens AD2-PR Duct Smoke Detector (Housings)

Overall, the Siemens AD2-PR is an air duct monitoring housings containing sampling tubes. When used with a compatible smoke detector, smoke and combustion products are detect for shutdown of the duct system and/or operation of supplementary equipment as provided by the system control panel.

The AD2 Series duct smoke detectors provide early detection of smoke and products of combustion present in air moving through an HVAC duct supply, return, or both. These devices come designed to prevent the recirculation of smoke in areas by the air handling system’s fans and blowers. Complete systems may be turn off in the event of smoke detection.

When the Siemens AD2-PR is operating; a sample of air is drawn from the duct and passed through the sampling chamber by means of the input sampling tube. The air sample passes through the smoke detector mounted in the duct housing and is exhaust back into the duct through the outlet tube.

 Features / Specifications

• Temperature Range: 32°F (0°C) – 100°F (38°C) per UL 268/268A
• Altitude Range: No altitude limitations
• Relative Humidity Range: 10-85% (non-condensing/non-freezing)
• Air Duct Velocity Range: 100-4000 ft/min
• Sampling Tube Pressure Range of Differences: Greater than 0.01 and less than 1.2 inches of water column