EST 387020 R3[1] 5 Protective Signaling System Wiring Practices Manual

Protective Signaling System Practices 387020 14JUL97 BY NOTICE Systems Technology Parkland Drive FL 34243 739 4300 1997 Edwards Systems Technology Inc manual and the products it describes are copyrighted by Systems Technology Inc EST You may not reproduce transcribe or transmit any part of this manual without written permission from EST manual contains proprietary information intended for distribution authorized persons or companies for the sole purpose of business with Edwards Systems Technology Inc If you any information contained in this manual to unauthorized you have violated all distributor agreements and we may legal action manual was designed and written by the EST Technical Documentation Department Sarasota Signaling System Wiring Practices1 Circuit Supervision Selection 3 Loading and Parameters Signaling Line Data Circuit Circuit Specifications VDC Notification Appliance Circuit Specifications Device Circuits 12 Notification Appliance Circuit Specifications Fighters Telephone Circuits 15 Optic Circuits Optic Budget Wiring Pictorials Wire Style B Initiating Device Circuit 20 Style B Initiating Device Circuit with Trouble and Power Style B Initiating Device Circuit with Trouble and Power Y Notification Appliance Circuit Z Notification Appliance Circuit B Signature Data Circuit 25 A Signature Data Circuit 26 System Wiring 27 and Branch Wiring Limited And Non Power Limited Wiring Application Drawings and Amperage Protection 41 Power Calculations and Battery Sizing 44 Battery Stand By Chart Signaling System Wiring Practices Manual information of liability content of this manual is proprietary in nature and is intended for distribution to authorized persons companies distributors others for the sole purpose of conducting business associated Edwards Systems Technology Inc The distribution of information within this manual to unauthorized persons shall constitute a of any distributor agreements and may result in of legal proceedings product has been designed to meet the requirements of NFPA 72 1996 Edition Underwriters Laboratories Inc Standard 7th Edition and Underwriters Laboratories of Canada Inc ULC S527 Installation in accordance with this manual codes and the instructions of the Authority Having is mandatory EST Inc shall not under any circumstances liable for any incidental or consequential damages arising from loss property or other damages or losses owing to the failure of EST Inc beyond the cost of repair or replacement of any defective EST Inc reserves the right to make product improvements change product specifications at any time every precaution has been taken during the preparation of this to ensure the accuracy of its contents EST assumes no for errors or omissions warning equipment can generate and radiate radio frequency energy If this is not installed in accordance with this manual it may cause to radio communications This equipment has been tested found to comply within the limits for Class A computing devices to Subpart B of Part 15 of the FCC Rules These rules are to provide reasonable protection against such interference this equipment is operated in a commercial environment of this equipment is likely to cause interference in which the user at his own expense is required to take whatever measures be required to correct the interference Signaling System Wiring Practices Manual Documentation 70 72 38 228 268 268A 346 464 521 864 1481 1638 1971 S527 S524 S536 S537 Fire Protection Association NFPA Batterymarch Park Box 9101 MA 02269 9101 Electric Code Fire Alarm Code Laboratories Inc ULI Pfingsten Road IL 60062 2096 Actuated Signaling Boxes Detectors Single Multiple Station Closers Holders for Fire Protective Signaling Systems Detectors for Fire Protective Signaling Systems Detectors for Duct Applications Indicators for Fire Protective Signaling Systems Signaling Appliances Detectors for Fire Protective Signaling Systems for Control Units for Fire Protective Signaling Systems Supplies for Fire Protective Signaling Systems Signaling Appliances Signaling Appliances Laboratories of Canada ULC Crouse Road Ontario M1R 3A9 for Control Units for Fire Alarm Systems for the Installation of Fire Alarm Systems for the Inspection and Testing of Fire Alarm Systems for the Verification of Fire Alarm Systems of state and local building codes of the Authority Having Jurisdiction Signaling System Wiring Practices Manual history Signaling System Wiring Practices Manual P N 387020 Status 1995 1997 For Change of old manual and content revisions Signaling System Wiring Practices Manual Signaling System Wiring Practices installation of fire alarm system wiring is similar in many respects any other low voltage system wiring Because the nature of the affects life and property additional measures are required installation to insure the system is operational at all times The sophisticated of control panels will not operate properly if the wiring is installed incorrectly It is the goal of this chapter to why correctly installed field wiring is vital in the operation of a alarm system and how to recognize proper and improper The process requires four basic steps Select the proper for the application Install the cable properly Test the cable to sure it is free of shorts opens and ground faults and Terminate cable properly Circuit Supervision are two types of circuit supervision widely used in fire alarm today Direct Current DC continuity supervision is used on small systems Large fire alarm systems use electronic multiplex circuitry and electronic questions answers to supervise field wiring and devices Initiating Device Circuit IDC INITIATING CONTACTS SUPERVISORY FLOWING EOL RESISTOR ZONE TEST POINT AT 1 2 SUPPLY SENSE V ALARM NORMAL 0 TROUBLE PANEL FIELD WIRING TEST POINT V figure above shows a simplified fire alarm panel supervising a Initiating Device Circuit or zone using Direct Current DC supervision The supervisory current from the battery flows terminal 1 the field wiring the EOL resistor terminal 2 of control panel through a second resistor and returns to the battery internal resistor and EOL resistor have equal resistance values The Signaling System Wiring Practices Manual at the zone test point VZ is measured by voltage sensing As long as the supervisory current flows through the EOL the voltage at VZ is one half the supply voltage VS and the sense circuitry generates a normal panel response Device Circuit IDC in Alarm Condition RINGS SENSE V ALARM NORMAL 0 TROUBLE INITIATING CONTACTS TEST POINT V ALARM DEVICE PUTS SUPPLY VOLTAGE ON TEST POINT PANEL FIELD WIRING a smoke detector or pull station operates it effectively puts a across terminals 1 and 2 as shown in the figure above This the zone test point voltage VZ up to the supply voltage VS When voltage sense circuitry sees VZ VS it generates an alarm response as ringing a bell the field wiring open as shown in the figure below the current no longer flows through the field wiring and EOL and VZ goes to zero When the voltage sense circuitry sees VZ it generates a trouble response such as sounding the trouble buzzer Initiating Device Circuit IDC