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Related Manuals for GST D Series
Summary of Contents for GST D Series
- Page 2 D Series Smoke and Heat Detector Application Bulletin Content Section 1 Overview of D Series Smoke and Heat Detectors………….…1 Section 2 Heat Detector Applications………………………………………2 Section 3 Smoke Detector Applications…………………………………….8 Section 4 Initial Installation Testing…………………………………….….12 Page I...
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Page 3: Section 1 Overview Of D Series Smoke And Heat Detectors
Section 1 Overview of D Series Smoke and Heat Detectors The D Series family of detectors is comprised of a variety of detection technologies to meet the needs of the fire protection community. The detectors are constructed of a white, high-impact polymer. -
Page 4: Section 2 Heat Detector Applications
D Series Smoke and Heat Detector Application Bulletin Section 2 Heat Detector Applications WARNING: These detectors are intended for use with ionization and/or photoelectric smoke detectors. A heat detector by itself does not provide life safety protection. Heat detectors sense change in air temperature and initiate alarm conditions based on a fixed-temperature point, rate of temperature rise, or amount of temperature rise above ambient condition. - Page 5 D Series Smoke and Heat Detector Application Bulletin A spot type heat detector will cover all points located within 0.7 times the listed spacing. The listed spacing for heat detectors is S = 50 ft. (15.3 m). Figure 2: Detector circle of coverage Figure 3: Alternative heat detector coverage configurations When installed on the ceiling, spot type heat detectors must be located a minimum of 4 in.
- Page 6 D Series Smoke and Heat Detector Application Bulletin Figure 4: Detector placement near ceiling or wall joints The following figure shows the required heat detector spacing for a 200 ft.(60.9 m) by 200 ft. (60.9 m) room with a 10 ft. (3m) ceiling. The figure shows 16 heat detectors with a required listed spacing of S = 50 ft.
- Page 7 D Series Smoke and Heat Detector Application Bulletin Ceiling Heat and Construction When heat detectors are installed on other than flat, smooth ceilings or at ceiling heights greater than 10 ft. (3 m), spacing adjustments must be made. The table below lists the reduction in listed spacing that must be applied when detectors are mounted on ceilings higher than 10 ft.
- Page 8 D Series Smoke and Heat Detector Application Bulletin Exposed beams Exposed beams may impede the flow of heat to the detectors. Beams are defined as members extending 4 in. (10 cm) or more down from the ceiling and spaced more than 3 ft.
- Page 9 D Series Smoke and Heat Detector Application Bulletin Notes • Detectors can be located on the bottom of beams if the beams are less than12 in. (30 cm) deep and beam spacing is less than 8 ft. (2.4 m). • Beams less than 8 in. (20 cm) deep are considered flat ceilings. Heat detectors must be mounted on the bottom of the beams.
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Page 10: Section 3 Smoke Detector Applications
D Series Smoke and Heat Detector Application Bulletin Figure 9: Heat detector spacing — sloped ceiling Section 3 Smoke Detector Applications Smoke detectors sense the presence of smoke particles. In order for a smoke detector to sense these particles, smoke must travel from the point of origin to the detector. When... - Page 11 D Series Smoke and Heat Detector Application Bulletin The smoke detector signals a dirty sensor trouble to the control panel when it reach the preset limit. The dirty sensor trouble indicates the detector is in need of servicing. 3.2 Spacing of smoke detectors The spot type smoke detector spacing recommendation of 30 ft.
- Page 12 D Series Smoke and Heat Detector Application Bulletin 3.4 Partitions Partitions extending from the floor to within 18 in. (46 cm) of the ceiling do not influence smoke detector spacing. Partitions closer than 18 in. (46 cm) to the ceiling may require modification of smoke detector spacing.
- Page 13 D Series Smoke and Heat Detector Application Bulletin 3.6 Exposed beams Beams are defined as any members extending 8 in. (20 cm) or more down from the ceiling and spaced more than 3 ft. (1 m) apart. Note that this definition differs from the one used in locating spot type heat detectors.
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Page 14: Section 4 Initial Installation Testing
D Series Smoke and Heat Detector Application Bulletin Notes • Detector can be located on the bottom beams if the beams are less than 12 in. (30 cm) deep and beam spacing is less than 8 ft. (2.4 m) • Beams less than 8 in. (20 cm) deep are considered flat ceilings. Smoke detectors must be mounted on the bottom of the beams. - Page 15 Gulf Security Technology Co., Ltd. No. 80, Changjiang East Road, QETDZ, Qinhuangdao, Hebei, P. R. China 066004 Tel: +86 (0) 335 8502434 Fax: +86 (0) 335 8502532 service.gst@fs.utc.com www.gst.com.cn...
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