DOD-220A

The 200 series of addressable detectors has been developed using the most innovative technical advances. Its completely new design makes the 200 series one of the most elegant on the market, ideal for facilities in which the balance between functionality and aesthetics is necessary. Detnov’s 200 series of addressable detectors is made up of 4 detector types, all of them available with and without isolator. There are a 58ºC rise-of-rate detector, a 78ºC heat detector, an optical detector and an opticalheat detector. All of them are compatible with Detnov’s CAD-150 and CAD-250 familiies of addressable control panels. The detectors’ addresses are assigned through the PGD-200 programmer (Isolator version support auto addressing). The use of this tool saves double address mistakes, because the programmer automatically handles the address to be assigned. Connections between the addressable system detectors and modules must be made with a 2 x 1.5 mm² twisted and shielded cable with a maximum length of 2 km (changing the section of the cable, number of elements and using system calculator tiil, can reach up to 3500 m). To meet the EN-54 requirements, the wiring must be done in a closed loop. Precise short-circuit isolators must be installed to facilitate the location of possible faults. The loop allow up to 250 addresses. The DOD-220A smoke detector is based in an optical dark chamber, which, thanks to its design, avoids unwanted air flows and facilitates the guidance of the smoke to the optical sensor. The detection principle is based on the Tyndall effect; the detector goes into alarm status due to the scattered light caused by the smoke particles being received by the optical sensor. The camera is protected to avoid the entrance of dirt and insects. This detector also incorporates compensation algorithms which avoid false alarms due to the dirtiness of the optical chamber, postponing equipment maintenance. The 200 series detectors require the Z-200 base in order to connect. This connection base includes a blocking option which avoids it being tampered with. A tool is needed to remove the detector from the base. Detectors in this series have non-polarity technology, facilitating system wiring and saving a huge amount of time in commissioning the system.