Although beam smoke detectors are not suited for all applications, they may be the detector of choice in many applications where spot type detec. Design issues smoke detectors smoke detector spacing does not need to be reduced based on ceiling height, but may be affected by beam construction. Guide to using optical beam smoke detection optical. Detector installation must comply with local regulations. Operation the near infrared pulsed beam generated by the emitter is sensed by the photodiode of the receiver, where it is converted into an electrical signal. View and download system sensor 6424 installation and maintenance instructions manual online.
In corridors less than 2m wide the horizontal spacing of detectors can be increased, the area of coverage need not overlap as in the case of a room. Nfpa 72 does not permit smoke detector spacing to exceed a nominal. Smoke detector spacing on level ceilings with beams and joists. Figures 3 and 4 show the spacing for both the shed type and peaked type sloped ceilings on smooth ceilings, beam smoke detectors should generally be mounted between 12 and 18 inches from the ceiling. A combination of smoke density and the linear distance of the smoke field create this.
Beam detector spacing on smooth ceilings, up to 60 ft. The detector consists of a transmitterreceiver unit and a reflector. This guide was developed to help the fire alarm designer gain an understanding of the beam smoke detectors capabilities and limitations, and how they differ from spottype smoke detectors. Smoke detector spacing with low height ceiling and beams. Beam1224, beam1224s singleended reflected type projected beam smoke detector 3825 ohio avenue, st. Beam detectors are more effective at height because as smoke rises it spreads effecting a larger area and in doing so affects more of the beam path. An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, typically as an indicator of fire. Often these conditions present special problems for the installation of spottype detectors and even greater problems for their proper maintenance. It is to be used with ullisted, separately supplied power 4wire control panels only.
The detector consists of a separate transmitter and receiver. We can now mount smoke detectors under beams in some conditions. Singleended reflected type projected beam smoke detector 3825 ohio avenue, st. Smoke, heat, and duct detectors application bulletin. While this is only a recommendation, virtually all manufacturers of smoke detectors follow this guideline. System smoke detectors 4 photoelectric smoke detector operation smoke produced by a fire affects the intensity of a light beam passing through air. The receiver is calibrated to a preset sensitivity level based on a percentage of total obscuration. Smoke detectors are very useful in homes, offices, schools, and industries. Use the correct wire gauge when installing detectors. Df8405 projected beam type smoke detector features can protect a wide or high ceiling area with a span of up to 100m. D296 smoke detector, longrange beam 24v for the proper number of d296 transmitter and receiver pairs depending on wire size and length, see the following table. They are used to detect fires in buildings where standard point smoke detectors would either be uneconomical or restricted for use by the height of the building. Beam smoke detectors generally have a maximum range of 330 feet and a maximum spacing between detectors of 60 feet.
Other spacing may be used depending on the ceiling height, airflow characteristics, and response requirements. Smoke entering the area between the transmitterreceiver and reflector causes a reduction in signal. The type used will be dictated by the installation and environment conditions and constraints. The fsb200s is a singleended beam smoke detector with integral sensitivity test for use with onyx series panels. A heat detector s listed spacing rating is based on detector installation on a flat smooth ceiling that is 10 ft. Up to 2 detector heads can report to a single ground level controller.
Copies of this manual are available from system sensor. Smoke detector spacing on level ceilings with beams and. Technolog that saves lives reflective beam beam smoke. This gives the beam smoke detector theoretical coverage of 19,800 square feet. Projected type beam smoke detectors are ideally suited for environmental conditions that might include high ceilings, dusty and dirty environments, or environments that experience temperature extremes. Smoke detectors are extraordinarily useful devices because the damage caused by fire accidents is catastrophic. The ability of an optical beam smoke detector to respond to a given levelthreshold of smoke obscuration. Smoke detector spacing on level ceilings with beams and joists executive overview nfpa 72, the national fire alarm code, recommends using 900 square feet 30 feet on center as a guideline for spacing spot type smoke detectors on smooth ceilings. The gaseous and solid airborne results of combustion. It is to be used with ullisted compatible control panels only. The reflective beam type smoke detector shall be a space age electronics, inc. 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.
With only one device to install and align, these singleended optical beam solutions saves you time and money on large area applications. The atrium has existing beam type smoke detectors below the atrium roof protecting the open atrium space. Longrange beam smoke detectors 3 table of contents en. This guide was developed to help the fire alarm designer gain an understanding of the beam smoke detector s capabilities and limitations, and how they differ from spot type smoke detectors. Siting of point type heat and smoke detectors siting of beam detectors siting of any other forms of detection specify type of cable for each circuit specify type of system and equipment 4. Smoke detectors for atrium smoke control the building. For the specific test fire performance parameters refer to the annex of en 5420. Bosch power tools smoke alarm beam smoke detector user manual. Beam1224, beam1224s singleended reflected type projected. A beam smoke detector s sensing range can be as long as a football field maximum beam range is typically 330 feet, compared to the one or twoinch dimension of a spot type sensing chamber. Smoke detectors in beam pockets nfpa fire code issues. It can also cause the light to scatter due to reflection off the smoke particles.
A potential problem with smoke detectors is unwanted alarms that often result in people being desensitized to the alarm system or in severe cases dis connecting the system. Where beam spacing is equal to or greater than 40 percent of the ceiling height 0. Matching smoke detector layouts to the nature of smoke transport and this code allowance could result in a simpler approach and often the need for less smoke detectors overall. Projected beam features smoke detector gamewellfci. The beam355 and beam355s are a transmitterreceiver unit and a reflector. Fsb200, fsb200s singleended reflected type projected beam smoke detector 12 clintonville rd. Technolog that saves lives beam smoke detector test station reflector reflective beam smoke detector ec50r100r overview the ec50r100r comprises a transmitter and receiver in a single enclosure and is usually installed between 19 inches and 24 inches below the ceiling. Detection with optical smoke detector can be slow in these places. As a result, smoke detector response time is dependent upon the amount of area the detector covers, not necessarily the spacing between detectors. Linear beam smoke detectorsall spaces with ceilings greater than 15 feet. View and download honeywell firelite beam355 installation and maintenance instructions manual online.
There are two general types of optical beam smoke detector projected and reflective. Spottype smoke detectors on 30 feet or less spacingall spaces with ceiling heights 15 feet or less. The photosensitive element of the optical beam smoke detector sees light produced by the transmitter in a normal condition. Spot type smoke detectors shall be permitted to be located on ceilings or on the bottom of beams. In many cases, however, the location and sensitivity of the. Protection should be as for category l4 with the addition of smoke or heat detectors in rooms opening onto escape routes. Because of their unique capabilities, beam smoke detectors can overcome some of the problems and limitations of spot type smoke detectors. Protection should be as for category l3 plus smoke detectors in specified. This is an industrywide problem that in most cases is caused by improper application, installation and maintenance of smoke.
Hello, we use cookies to improve website performance, facilitate information sharing on social media, and offer advertising tailored to your interests. Due to the inherent capabilities of projected type beam detectors they are often installed in locations where spot type detection is impractical. Intelligent singleended reflective imaging beam smoke detector. Singleended reflected type projected beam smoke detector. Guide to using optical beam smoke detection optical beam. The light transmitter emits an unseen beam of light that is received by a receiver in the usual condition. Correct smoke detector location and spacing is critical in a properly installed and operating. Model sk beam sk beam t is a long range projected beam smoke detector designed to provide open area protection. Edwards signaling ec50r 100r reflective beam smoke detector. This wide detection path is more effective than the tiny sensor chamber of a point detector.
Epd, ephd, and epdd detectors offer a variety of sensitivity settings. While this is only a recommendation, virtually all manufacturers of smoke detectors follow this. Listed for operation from 22f to 1f, the beam355 and beam355s are usable in open area applications where temperature extremes exceed the design limits of other types of smoke detection. Jun 27, 2018 a where beam spacing is equal to or greater than 40 percent of the ceiling height 0.
The reflected infrared light is detected by the receiver and analyzed. Reflected beam smoke detectors are designed for spacious rooms, open areas, and high ceilings. Beam1224 beam detector conventional devices fire alarm. Smoke in the beam path will reduce the received infrared light proportionally to the density of the smoke. Linear beam smoke detectors all spaces with ceilings greater than 15 feet. Intelligent singleended reflective imaging beam smoke detector the osirisk singleended beam smoke detector is easy to install and adjust.
The osirisk intelligent addressable reflectortype linear optical beam smoke detector is. Distributor channel partner of beam smoke detectors system sensor beam detectors, reflected beam detectors, fireray 5000 motorized reflective type beam detector and morley ias mi lpb beam detector offered by fire projects private limited, ahmedabad, gujarat. The relative lightness or darkness of smoke, ranging from invisible to white to grey to black. System sensor beam 1224 series singleended reflected type beam smoke detector description the system sensor beam1224 series 4wire projected beam smoke detector is unique ly suited to sense smoke in open areas with high ceilings where spot type detectors are difficult to install and maintain.
Basically it is an atrium stuck on to the side of the existing 34story building. Sigahfs 5o f 57o c fixedtemperature heat detector sigahrs combination 15o f per minute rateofrise, and 5o f 57o c fixedtemperature heat detector signature series smoke and heat detectors are intelligent analog. Smoke detector placement for beams new for 2014 standard if ceiling is level and beam is spacing and detectors can be placed on ceiling or under beams. Spottype smoke detectors shall be permitted to be located on ceilings or on the bottom of beams. The code reference in item 4a above is the section of the code that allows for expanded spacing of smoke detectors in corridors, essentially allowing a 41foot spacing between smoke detectors for. So as a rule of thumb and a quick recap, here are my recommendations with regards to smoke detector types and applications. Because smoke has to reach the detector mounted to the ceiling. The alarm sensitivity is the minimum obscuration level at which the detector will initiate an alarm condition. The choice of detector type will ultimately be decided by accessing the situation, building characteristics, environment, speed of detection, evaluation of potential risk and the materials present.
View and download bosch ds240 installation instructions manual online. The type of beam smoke detector used will be dictated by the installation requirements and environment. Bosch ds240 installation instructions manual pdf download. System sensor beam 1224 series singleended reflected type beam smoke detector description.
D4007300 1 i562294005r specifications general range. The firelite beam355 and beam355s are intelligent, addressable reflected beam smoke detectors for protecting open areas with high and sloping ceilings, and wideopen areas, where spot type smoke detectors are difficult to install and maintain. Engineering specifications the contractor shall furnish and install, where indicated on the plans, projected beam type smoke detectors. Skbeam, skbeamt singleended reflected type projected beam. The detector analyzes this attenuation or obscuration of light and acts accordingly.
The fireray 5000 system is an autoaligning, selfcorrecting infrared beam smoke detector. Ideal applications are atriums, cathedral ceilings, aircraft hangars, warehouses, sporting arenas. The beam1224 and beam1224s are four wire conventional reflected beam smoke detectors. Onehalf that spacing between the beam and the sidewall may be used as a guide. Spot type smoke detectors on 30 feet or less spacing all spaces with ceiling heights 15 feet or less. Smoke detectors and beam pockets fire alarms certified. A smoke detector device is a smoke sensing device that indicates a fire. Ceilings above 3600mm in room height shall be assessed for spacing based on fire type, growth rate, engineering judgement and mfg. The projected beam smoke detector shall be field adjust. The spc24 detector may also be used in conjunction with more traditional spot type smoke detection devices to provide an even more comprehensive detection system. The detector spacing looks fine for the high ceiling area, but in the upper level the size of beams lead me to a detector in each beam pocket.
It is, therefore, less likely that smoke will be blown out of the beam smoke detector s sensing range. Skbeam, skbeamt singleended reflected type projected. The reflective beam type smoke detector shall be a fire fighting enterprises 50ru 160 ft. Only the head unit needs to be wired, and the eyeball can be aimed without adjusting the detector mounting. Ul listed products must comply with nfpa72 ensure clear line of sight between detector and reflector it is recommended at least 0.
Automatic sensitivity compensation for contamination or a slight shift in the optical system. They are uniquely suited for protecting open areas with high ceilings where spot type smoke detectors are difficult to install and maintain. Objectives are similar to category l3, however additional protection is provided for rooms at higher risk. The synchronized system in light transmitting and light receiving prevents a false alarm. Optical beam smoke detectors en542 normal sensitivity enhanced sensitivity 25. General description system sensor model 6424 is a long range projected beam smoke detector designed to provide open area protection.