Description

In the first place, the Siemens AD-11XPR is air duct monitoring housings. When used with a compatible smoke detector, smoke and combustion products are detected for shutdown of the duct system and/or operation of supplementary equipment as provided by the system control panel.

When the Siemens AD-11XPR is operating, a sample of air is drawn from the duct as well as passed through the sampling tube. Also, the air sample passes through the smoke detector mounted in the duct housing and is exhaust back into the duct through the outlet sampling tube.

Locate the air duct detector in the main supply duct, downstream from the filters and positioned so as to operate reliably in case of smoke in any partof the air stream. In instances where filters are capable of removing smoke, install detectors both upstream and downstream from the filters. Wire or program the detectors into the system so that they automatically shut down the blowers and operate dampers as required in the event of an alarm.

The AD-11P contains an LED indicator (located on the smoke detector) capable of flashing either one of three distinct colors: green, yellow or red. During each flash interval, the microprocessor based detector checks the following:

• for smoke in its sensing chamber
• that its smoke sensitivity is within the range indicate on the nameplate label
• that its critical smoke sensing electronics are operating.

Features / Specifications

• Temperature Range: 0°C to 38°C (32°F to 100°F).
• Altitude Range: No altitude limitations
• Relative Humidity Range: 0-93% (non-condensating)
• Air Duct Velocity Range: 300-400 ft/min 
• Sampling Tube Pressure Range of Differences: .006-1.07 inches of water column