and visual trouble signal is operated when there is a fault in the system.
Provide tubing and wiring in protective [material] [metal] conduit or
tubing. Detectors located in areas subject to moisture or exterior
atmospheric conditions shall be types approved for such locations. Removal
of any detector from the system shall result in the actuation of a trouble
signal. Furnish not less than two spare detectors of each type for each
system.
2.6.1
Spot Heat Detectors
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NOTE: Provide rate compensated type for buildings
such as aircraft hangars where opening of doors in
cold weather could actuate the system. Do not use
hydraulic actuation system in hangar bays and
unheated areas in regions subject to freezing.
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Provide detectors for [surface] [flush] outlet box mounting. Support
detectors independently of conduit, tubing, or wiring connections.
Detectors shall be completely metal enclosed and shall be [combination
fixed temperature and rate-of-rise] [fixed temperature and rate
compensated] [infrared] [ultraviolet] [_____] type. Contacts shall be
self-resetting after [response to rate-of-rise] actuation. [Operation
under fixed temperature actuation shall result in an indication which may
be noted by external visual inspection of the detector, or the detector may
be the self-resetting type.] Space detectors in accordance with NFPA 72,
except provide at least two detectors in areas exceeding 55 sq meters 600
sq feet. Provide fixed temperature type detectors in areas subject to
abnormal temperature changes, such as showers and boiler rooms. Reduce
heat detector spacing in areas with ceiling heights greater than 10 feet 3
meters in accordance with NFPA 72. For ceiling heights greater than 30 feet
9 meters, space detectors based on an assumed height of 30 feet 9 meters.
[Furnish a portable electric device suitable for testing the detectors.]
2.6.2
Smoke Detectors
Provide for detection of abnormal smoke densities by the [ionization] [or]
[photoelectric] principle. Provide control and power panels required for
operation of the detector either as individual detectors or detectors
integral with the main control panel. Provide detectors and associated
panels which are compatible with main control panel being provided and
suitable for use in a supervised circuit. Malfunction of the electrical
circuitry to the detector or detector control or power panels shall actuate
the system trouble devices. Each detector shall contain a visible
indicator lamp that shall indicate when the detector is activated. Each
detector shall be the plug-in type with screw terminals in the detector
base for wiring connections.
Detector spacing and location shall be in
accordance with manufacturer's recommendations and the requirements of NFPA
72; however, spacing shall not exceed 9 by 9 meters 30 by 30 feet per
detector, and 9 linear meter 30 lineal feet per detector along corridors.
Do not locate detectors within 1.50 meters 5 feet of air supply diffusers
and registers, or within<MET 12 inches of lighting fixtures. [Provide
remote indicator lamp for each detector located above suspended ceilings,
beneath raised floors, or otherwise concealed from view.] Mount detectors
located beneath raised floors face downward, with the base within 50 mm 2
inches of the underside of the raised floor. Where the space under the
raised floor is less than 305 mm 12 inches in height, mount detectors with
the base either horizontal or vertical, with the detection chamber located
SECTION 13945N
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