Instruction/ maintenance manual of the product D296/D297 Bosch Appliances
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D296/D297 Series Projected Beam Smoke Detectors Application Guide.
2 D296/D297 Series Application Guide Contents 1.0 Scope --------------------------------------------------------------- 3 2. 0 Glossary of T erms ------------------------------------------------ 3 3.0 Introduction -------------------------------------------------------- 4 4.
D296/D297 Series Application Guide 3 1. 0 Scope This application guide is intended to assist in determining the best locations and applications of the D296 Series Long Range Beam Smoke Detectors.
4 D296/D297 Series Application Guide 3.0 Introduction Why should I use Beam Smoke Detectors and where should I use them? • Where there are high ceilings such as in atriums and aircraft hangers. Because the detectors mount on the walls easier access is achieved.
D296/D297 Series Application Guide 5 4.0 Specifications Power: D296 18 to 32 VDC Receiver: 45 mA @ 24 VDC, Transmitter: 20 mA @ 24 VDC D297 10.2 to 18 VDC Receiver: 50 mA @ 12 VDC, Transmitter: 20 mA @ 12 VDC Alarm Output: One Normally Open (NO) Contact rated 1 A, 60 VDC maximum for resistive loads.
6 D296/D297 Series Application Guide 6.0 Applications 6. 1 Coverage The D296 Series Projected Beam Smoke Detectors are primarily used to provide for smoke detection in large areas with open or high ceilings. The D296 Series Detectors have a coverage range of up to 350 ft (106 m).
D296/D297 Series Application Guide 7 6. 3 Environmental Considerations 6.3.1 Outdoor Beam smoke detectors are inappropriate for outdoor applications. Environmental conditions such as temperature extremes, bright sunlight, rain, freezing rain, snow , sleet, fog and dew can interfere with the proper operation of the detector .
8 D296/D297 Series Application Guide 6. 5 Location and Spacing NFP A 72-2002 ® , 5.7.3.4.1 states: “Projected beam-type smoke detectors shall be located in accordance with the manufacturer ’s documented instructions.
D296/D297 Series Application Guide 9 If the ceiling beams (joists) exceed 1 ft (.03 m), the spacing between the beams exceeds 8 ft (2.4 m) or the ceiling height exceeds 12 ft, the detectors must be located in every ceiling beam pocket.
1 0 D296/D297 Series Application Guide 6.6.3 Peaked Ceilings Peaked structures follow the same guidelines as sloped ceilings with one exception: When calculating the location of the detectors, the first detector is within 3 ft (1 m) of the peak, measured horizontally .
D296/D297 Series Application Guide 11 7.0 Worksheet Be sure to include site features such as: • Support Beams (include direction) • Support posts • Peaks • Lights • Air handling units (HV AC) • Shelving • Anything suspended from the ceiling that might interfere with the beam • Directions (North, South, etc.
© 2004 Bosch D296/D297 Series Projected Beam Smoke Detectors 130 Perinton Parkway , Fairport, New Y ork, USA 14450-9199 Application Guide Customer Service: (800) 289-0096; T echnical Support: (888) 8.
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