Edwards 280B-PL Series Catalog Page

Conventional Fire Alarms Detectors Series Series heat detectors offer fixed or combination rate of rise and temperature detection temperature increase at the sensor of 15 or more per minute activates the rate of rise closing the contacts in the sensor to the alarm condition to the fire alarm panel When the rate of rise element alone been activated the sensor is self restoring the temperature of the center disk rises to the rated temperature the fixed temperature activates closing contacts in the sensor transmits an alarm condition to the fire alarm panel The fixed temperature element is and when activated the detector be replaced The need for replacement is when the center disk has fallen free the detector 280B series heat sensors come with a white plastic reversible mounting The plate is designed for surface or flush and installs directly to a standard North 3 or 4 inch octagon box Once the plate is fixed a simple twist will lock the in place It can be removed using a to release the tamper resistant finger and Specifications fixed temperature element to 37.8 281B PL and 283B PL to 150 30 to 65.6 282B PL 284B PL Information Detector of Rise Fixed Temperature Detector Temperature Ratings Recommended Rated at Ceiling Max ft 2 232m2 ft 15.2m ft 9.14m No ft 2 232 m2 ft 15.2 m ft 9.14m ft 2 232m2 ft 15.2m ft 9.14m AC DC DC DC AC DC DC DC AC DC DC DC AC DC DC DC ft 2 232m2 ft 15.2m ft 9.14m Maximum detector coverage has been determined by UL to provide detection time equal to sprinkler devices spaced at 10 ft 3.05m intervals on a smooth 15 feet 9 inches 4.8m high Higher ceilings may adversely affect detection time Earlier detection may be obtained by reducing the spacing between See NFPA 72 Chapter 5 Fire Alarms Detectors Series Mounting Plate with Heat Detectors No and Dimensions No exposed wiring Install Detector arrows on detector and plate Push up and clockwise Shipping lb Box supplied 13 32 Remove Detector locking finger with screw tip and turn detector clockwise Mount Wiring 4 Locking Fingers 2 wire 1 2 Reversible Mounting Plate Cat No 280A PL View Mount Break 2 sections on View Mounting Plate P N 280 MPL separately