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Summary of Contents for ESP BS5839
- Page 1 BS5839 PART 1: 2017 A GUIDE TO FIRE ALARM SYSTEMS DESIGN AUTHORISED DISTRIBUTOR Birmingham Call: 0121 359 5387 Cannock Call: 01543 271362...
- Page 2 Fire Alarm and Fire Detection systems are categorised points of the latest version of the standard: in the following way: BS5839 Fire detection and fire alarm systems for P - AFD* designed to primarily protect property buildings – Part 1 2017: Code of practice for design,...
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Page 3: Smoke Detectors
SMOKE DETECTORS FIRE DETECTOR COVERAGE & POSITIONING SMOKE DUST 7.5m PARTICLE SIZE 5.3m 10.6m It should be noted that large smoke particles will have a similar particle size to Smoke detection devices have an individual coverage of 7.5m radius. However small particle contaminates including some types of dust and aerosols. - Page 4 7.5m MAX 15m MAX Smoke Detectors <1m >1m Air vent / Air con Detectors must not be sited less than 1m from air inlets or air conditioning units. In corridors less than 2m wide the horizontal spacing of detectors may be increased, the areas of coverage need not overlap as in the case of a room.
- Page 5 SMOKE DETECTORS Standard Spacing Extended Spacing Light fitting 100mm <200mm (500mm for detectors) Apex < 150mm Apex < 600mm Apex > 150mm Apex > 600mm Heat Detector Smoke Detector Heat Detector Smoke Detector Never mount devices closer than twice the depth of light fittings. For ceilings that feature an apex: as long as the height of the apex from the rest of the ceiling is less than 150mm for heat detectors or less than 600mm for smoke detectors then these can be treated the same as flat ceilings.
- Page 6 25mm 150mm Lift Shaft Lift Shaft Thermistor Heat Detectors 1.5m The sensing element of a heat detection device (thermistor) should not be less Vertical shafts like lifts and stairways should have a device mounted within than 25mm below ceiling, and not greater than 150mm below ceiling. 1.5m of any opening.
- Page 7 SEARCH DISTANCE MANUAL CALL POINTS (MCP) 60m MAX 1.4m +/- 200mm A person searching a zone for a fire should not have to travel more than 60m The centre of the element of the manual call point should be positioned 1.4m from the entrance of a zone to identify the source of a fire.
- Page 8 SOUNDERS 65dB(A) @ 500Hz to 1000Hz Background Noise +5dB(A) @ 500Hz to 1000Hz For areas where people are sleeping, sounder devices should produce a minimum The minimum sound level of a sounder device should be 65dB(A) or 5dB(A) of 75dB(A) at the bed-head with all doors shut. above a background noise which is louder than 60dB(A) (if lasting more than 30 seconds) and at a frequency of between 500Hz and 1000Hz.
- Page 9 VISUAL INDICATION DEVICES VISUAL ALARM DEVICE CATEGORIES EN54-23 specifies that the VAD produces an illumination of 0.4 lux on surfaces perpendicular to the direction of the light emitted from the device. They are not designed to wake people that are asleep and can be red or white light. VADs are classified into three categories based on their application: W - Wall-mounted C - Ceiling-mounted...
- Page 10 A conventional 2-wire fire alarm system is often the natural choice for smaller applications or where budget constraints exist. ESP’s MAGDUO 2-wire fire alarm system has long been known for its adaptability and cost-effectiveness within a variety of applications, big or small … making it one of the most flexible products on the market.
- Page 11 FIRE DETECTION & ALARM SYSTEMS FIRE DETECTION & ALARM SYSTEMS Addressable Fire Systems Conventional Fire Systems Although conventional fire alarm system cost less to purchase, they are generally more expensive to install. Each device connected to an addressable system has it’s own unique address. This is due to each zone for detectors and call points having to be wired, on a When a fire is detected the devices address is identified by the panel, radial circuit back to the panel.
- Page 12 FREE SYSTEM DESIGN FIRE SYSTEM COMMISSIONING ESP can offer a team of dedicated design engineers who are fully trained & Alongside ESP’s extensive range of fire protection qualified in all of the relevant British Standards. systems, a new commissioning service has now...
- Page 13 P R O D U C T A W A R E N E S S T R A I N I N G D A Y S Here at ESP we offer free training aimed at electrical contractors and wholesalers who would like to add fire and security equipment to their product portfolio.
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Questions and answers
Is there any minimum distance from a smoke or heat detector to a extract grill terminal or hood.
The minimum distance required between an ESP BS5839 smoke or heat detector and an extract grill terminal or hood is 1 meter.
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