Edwards Data Sheet 280B Series Heat Detectors

Rate of rise Fixed Detectors Series Series heat detectors offer fixed temperature or combi rate of rise and fixed temperature detection A temperature increase at the sensor of 15 or more per minute activates the rate of rise feature This the contacts in the sensor to transmit the alarm condition the fire alarm control panel When the rate of rise element alone been activated the sensor is self restoring TEMPERATURE If the temperature of the center disk to the sensor rated temperature the fixed temperature activates This closes contacts in the sensor and trans an alarm condition to the fire alarm control panel The fixed element is non restorable and when activated the must be replaced The need for replacement is indicated the center disk has fallen free from the detector Signaling Catalog u Conventional Initiating Features UL listed for 50 ft 15.2m spacing Single pole normally open contact Low profile with mounting plate Pure white finish Mounting flexibility with screw terminals Easy twist on installation On site testing of rate of rise feature Positive operating indication for fixed temperature element detectors are most suitable for environments where rapid fire can be expected When selecting the location on the for the heat sensor do not locate it in direct path of hot or air flow Refer to the detector specifications for the recom maximum spacing Earlier detector response may be by reducing the spacing between detectors 280B series heat sensors come standard with a white reversible mounting plate The plate is designed for surface flush mounting and installs directly to a standard North Ameri 3 or 4 inch octagon box Once the mounting plate is fixed a twist will lock the sensor in place It can be removed using screwdriver to release the tamper resistant locking finger This prevent unauthorized removal 1 of 2 D A T A S H E E T S85001 0261 to be used for installation purposes Issue 4 plastic mounting plate is molded to accommodate wiring us 1 800 336 4206 www edwardssignaling com Signaling is EDWARDS brand Farm Glen Boulevard CT 06032 Canada contact Chubb Edwards Email inquiries chubbedwards com Web www chubbedwards com 2013 UTC Fire Security Americas Inc All rights reserved subject to change notice Edwards is part of UTC Controls Security a unit of Technologies Corporation Use For Property Protection Only Heat sen do not protect life against fire and smoke In most fires levels of smoke heat and toxic gases can build up a heat detector would initiate an alarm Independent indicate that heat detectors should only be used when protection alone is involved In cases where life safety a factor the use of smoke detectors is recommended no circumstances should heat detectors be relied upon the sole measure to ensure fire safety However if they are in accordance with the directions in the Specifica table these sensors can contribute within an overall safety program to reducing the risk of avoidable property Number Temperature Rating Max Ambient Temp at Type Recommended Cover Recommended Spacing Recommended Spacing Maximum Distance from Rating 57 90 57 90 38 66 38 66 Temperature and Rate of Rate of rise F 9 C self restoring Temperature Only ft 232 m ft 15.2 m ft 9.14 m ft 7.6m from any wall or projection extending down from the more than 12 inches 305 mm Pole Normally Open 3.0 amps at 6 to 125 Vac 1.0 amp at to 24 Vdc 0.3 amps at 125 Vdc 0.1 amps at 250 Vdc Environment Listings Maximum detector coverage has been determined by UL to provide detection time equal to sprinkler devices at 10 ft 3.05m intervals on a smooth ceiling 15 feet 9 inches 4.8m high Higher ceilings may adversely detection time Earlier detection may be obtained by reducing the spacing between sensors See NFPA 72 5 Dry FM CSFM Information No Detector 135 57 Rate of Rise and Fixed Temperature Detector 194 90 Rate of Rise and Fixed Temperature Detector 135 57 Fixed Temperature Detector 194 90 Fixed Temperature Accessories Mounting Plate White Reversible included Wt kg 0.5 2 of 2 D A T A S H E E T S85001 0261 to be used for installation purposes Issue 4