Data Sheet S85001 0261 PL Series Heat Detectors Brochure
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2014-09-27
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Edwards Signaling Catalog u Conventional Initiating Rate-of-rise/Fixed Temperature Heat Detectors 280B-PL Series Overview Standard Features 280B-PL Series heat detectors offer fixed temperature or combination rate-of-rise and fixed temperature detection. • UL listed for 50 ft. (15.2m) spacing RATE-OF-RISE: A temperature increase at the sensor of 15°F (9°C) or more per minute activates the rate-of-rise feature. This closes the contacts in the sensor to transmit the alarm condition to the fire alarm control panel. When the rate-of-rise element alone has been activated, the sensor is self-restoring. • Low profile with mounting plate FIXED TEMPERATURE: If the temperature of the center disk rises to the sensor’s rated temperature, the fixed temperature element activates. This closes contacts in the sensor and transmits an alarm condition to the fire alarm control panel. The fixed temperature element is non-restorable and, when activated, the detector must be replaced. The need for replacement is indicated when the center disk has fallen free from the detector . • On-site testing of rate-of-rise feature • Single pole — normally open contact • Pure white finish • Mounting flexibility with screw terminals • Easy twist-on installation • Positive operating indication — for fixed temperature element Application Heat detectors are most suitable for environments where rapid fire development can be expected. When selecting the location on the ceiling for the heat sensor, do not locate it in direct path of hot or cold air flow. Refer to the detector specifications for the recommended maximum spacing. Earlier detector response may be obtained by reducing the spacing between detectors. Installation Edwards 280B series heat sensors come standard with a white plastic reversible mounting plate. The plate is designed for surface or flush mounting and installs directly to a standard North American 3½ or 4 inch octagon box. Once the mounting plate is fixed, a simple twist will lock the sensor in place. It can be removed using a screwdriver to release the tamper-resistant locking finger. This helps prevent unauthorized removal. Page 1 of 2 S85001-0261 D ATA S H E E T Not to be used for installation purposes. Issue 4 Mounting The plastic mounting plate is molded to accommodate exposed wiring. Contact us... Phone: 1-800-336-4206 Web: www.edwardssignaling.com Edwards Signaling is an EDWARDS brand. 3 Farm Glen Boulevard Farmington, CT 06032 In Canada, contact Chubb Edwards... Email: inquiries@chubbedwards.com Web: www.chubbedwards.com © 2013 UTC Fire & Security Americas Corporation, Inc. All rights reserved. Specifications subject to change without notice. Edwards is part of UTC Climate, Controls & Security, a unit of United Technologies Corporation. Specifications Catalog Number UL Temperature Rating UL Max Ambient Temp. at Ceiling Detector Type UL Recommended Coverage* UL Recommended Spacing FM Recommended Spacing UL Maximum Distance from Wall Contacts – Rating WARNING – Use For Property Protection Only: Heat sensors do not protect life against fire and smoke. In most fires, hazardous levels of smoke, heat and toxic gases can build up before a heat detector would initiate an alarm. Independent studies indicate that heat detectors should only be used when property protection alone is involved. In cases where life safety is a factor, the use of smoke detectors is recommended. Under no circumstances should heat detectors be relied upon as the sole measure to ensure fire safety. However, if they are spaced in accordance with the directions in the Specifications table, these sensors can contribute, within an overall fire safety program, to reducing the risk of avoidable property losses. Operating Environment Agency Listings 281B-PL 135°F (57°C) 282B-PL 194°F (90°C) 283B-PL 135°F (57°C) 284B-PL 194°F (90°C) 100°F (38°C) 150°F (66°C) 100°F (38°C) 150°F (66°C) Fixed Temperature and Rate-ofRise Rate-of-rise: 15° F (9° C), self restoring Fixed Temperature Only 2,500 ft.² (232 m²) 50 ft. (15.2 m) 30 ft. (9.14 m) 25 ft. (7.6m) from any wall or projection extending down from the ceiling more than 12 inches (305 mm) Single Pole Normally Open 3.0 amps at 6 to 125 Vac; 1.0 amp at 6 to 24 Vdc; 0.3 amps at 125 Vdc; 0.1 amps at 250 Vdc Indoor – Dry UL, FM, CSFM * 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 ceiling 15 feet 9 inches (4.8m) high. Higher ceilings may adversely affect detection time. Earlier detection may be obtained by reducing the spacing between sensors. (See NFPA 72, Chapter 5) Ordering Information Cat. No. Description Ship Wt. lb (kg) 281B-PL 282B-PL 283B-PL 284B-PL Heat Detector, 135°F (57°C), Rate-of-Rise and Fixed Temperature Heat Detector, 194°F (90°C), Rate-of-Rise and Fixed Temperature Heat Detector, 135°F (57°C), Fixed Temperature Heat Detector, 194°F (90°C), Fixed Temperature 1.0 (0.5) Detector Accessories 280A-PL Plastic Mounting Plate – White, Reversible (included) S85001-0261 D ATA S H E E T Not to be used for installation purposes. Issue 4 06-27-13 Page 2 of 2
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