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Summary of Contents for Bosch D296/D297
- Page 1 D296/D297 Series Projected Beam Smoke Detectors Application Guide...
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Page 2: Table Of Contents
Indoor --------------------------------------------- 7 Mounting --------------------------------------------------- 7 Location and Spacing ----------------------------------- 8 Ceilings ---------------------------------------------------- 8 6.6.1 Flat Ceilings ------------------------------------ 8 6.6.2 Sloped Ceilings -------------------------------- 9 6.6.3 Peaked Ceilings ------------------------------- 10 6.6.3 Long Ceilings ----------------------------------- 10 Worksheet --------------------------------------------------------- 11 D296/D297 Series Application Guide... -
Page 3: Scope
The notification of a trouble condition indicated on a control panel or annunciator is a “TROUBLE” SIGNAL. NFPA 72 ® , National Fire Alarm Code ® are registered trademarks of the National Fire Protection Association. D296/D297 Series Application Guide... -
Page 4: Introduction
The receiver indicates a trouble condition if the the beam strength is increased by more than 20%. This can be caused by incorrect alignment of the transmitter and receiver or a partially blocked beam when the transmitter and receiver are installed. D296/D297 Series Application Guide... -
Page 5: Specifications
No alarm or setup on critical frequencies in the range from 26 to 950 Megahertz at 50 v/m. UL Listing UL268 & UL268A, ULC Listing, MSFM Permit #1943, NY City MEA Acceptance #MEA274-93-E, CSFM #7260-1062:106, FM Job #0X2A9.AY, and CE. D296/D297 Series Application Guide... -
Page 6: Applications
The maximum height to which the smoke will ascend, especially early in the development of a fire, depends on the convective heat release rate of the fire and the ambient temperature in the compartment. ® (2002 Edition) states: “The potential for the stratification of smoke is Stratification D296/D297 Series Application Guide... -
Page 7: Environmental Considerations
• When mounting in high ceiling areas such as atriums, several mounting levels should be considered to account for stratification due to ceiling height or low energy fires. ® (2002 Edition) states: "The light path of projected beam-type detectors ® (2002 Edition) states: "Where the light path of a projected beam-type Multiple Level Mounting D296/D297 Series Application Guide... -
Page 8: Location And Spacing
A Beam is considered to be a support that is 4 in. (100 mm) or more in depth and 3 ft (0.9 m) or more in spacing. Transmitter Transmitter ½ S ½ S S = Selected detector spacing Transmitters ½ S ½ S Ceiling beams (joists) Receivers D296/D297 Series Application Guide Receiver ¼ S Transmitter Receiver Receiver... -
Page 9: Sloped Ceilings
(1 m) Max. ® (2002 Edition) to determine the potential fire size at the locaton. Slope 10° or less Slope greater than 10° Detector at ½ S not Required D296/D297 Series Application Guide Receiver Ceiling beams (joists) Receiver Receiver ½ S... -
Page 10: Peaked Ceilings
“cross-talk.” The minimum spacing between adjacent detectors is 1/10th of the distance between the transmitter and the receiver. For example, for a beam length of 300 ft (91.5 m), the minimum spacing is 30 ft (9.1 m). D296/D297 Series Application Guide... -
Page 11: Worksheet
• Support Beams (include direction) • Support posts • Peaks • Lights • Air handling units (HVAC) • Shelving • Anything suspended from the ceiling that might interfere with the beam • Directions (North, South, etc.) D296/D297 Series Application Guide... - Page 12 Be sure to include site features such as: • Support beams • Ceiling height • Peaks © 2004 Bosch D296/D297 Series Projected Beam Smoke Detectors 130 Perinton Parkway, Fairport, New York, USA 14450-9199 Application Guide Customer Service: (800) 289-0096; Technical Support: (888) 886-6189 P/N: F01U500951B...