System-sensor A05-1003-002 Manuel d'utilisateur

APPLICATIONS GUIDESystemSmoke Detectors

SYSTEM SENSORbe mounted on the wall. Wall-mounted detectors should belocated not less than 4 inches nor more than 12 inchesfrom the ceiling to the top

APPLICATIONS GUIDE: SYSTEM SMOKE DETECTORSSpecial Application DetectorsThe guidelines in this document generally apply to stan-dard open-area smoke de

SYSTEM SENSORIn other words, if a diagonal through the center of the roomis no greater than the diameter of the circle, or 42.4 feet(12.8 meters), one

APPLICATIONS GUIDE: SYSTEM SMOKE DETECTORS12• Alternate Detector Mounting. Mounting alternatedetectors up to 3 feet (1 m) below the ceiling canincreas

SYSTEM SENSOR13Smoke detectors are designedto be as maintenance free aspossible. However, dust, dirt,and other foreign matter canaccumulate inside a d

14APPLICATIONS GUIDE: SYSTEM SMOKE DETECTORSWhat to Do AboutUnwanted AlarmsNo detection system is imper-vious to unwanted alarms.Statistically, as the

SYSTEM SENSOR15NFPA standards require and smoke detector manufacturersrecommend that all detectors be visually inspected twice a year.Clean the detect

APPLICATIONS GUIDE: SYSTEM SMOKE DETECTORS16If assistance must be sought from the installer or man-ufacturer, there will be an indication of the tests

SYSTEM SENSORAddressable System SmokeDetectorSystem smoke detectors,which, in addition to providing alarm and trouble indica-tions to a control unit,

APPLICATIONS GUIDE: SYSTEM SMOKE DETECTORS18product evaluation, that maintains periodic inspection oflisted equipment or materials and whose listing s

1ForewordStudies have shown that in the United States the use of early warning fire and smoke detection systems has resulted in a significant reductio

SYSTEM SENSOR19Customer Name:Installation Date: Installing Contractor:Inspection and Test Date: Inspection and Test Performed By:Check one Location A

©2002 System Sensor. The company reserves the right to change specifications at any time. A05-1003-002

NFPA Codes andStandardsNFPA publishes standards forthe proper application, instal-lation, and maintenance of automatic smoke detectors. Theprincipal c

Manufacturer’s PublicationsThe manufacturer of the smoke detectors being usedshould be contacted for any published information on theirproducts.SYSTEM

APPLICATIONS GUIDE: SYSTEM SMOKE DETECTORS4Photoelectric Smoke Detector OperationSmoke produced by a fire affects the intensity of a lightbeam passing

Wiring SupervisionThe initiating circuits that con-nect smoke detectors to a con-trol panel should be super-vised so that a fault (trouble) condition

APPLICATIONS GUIDE: SYSTEM SMOKE DETECTORS6Class A CircuitsClass A circuits also differentiate between short circuitsacross the loop and opens on the

SYSTEM SENSOR7A manufacturer’s installation wiring drawing routes wiresand shows connections in a certain manner to accommo-date supervision requireme

After all detectors have beeninstalled, test the completesystem to ensure that nowiring faults exist, and that allparts of the system operate asintend