changes (e.g. near main hangar doors, unit heaters,
etc.). Consult the Division Fire Protection
Engineer.
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Designed for detection of fire by [combination fixed temperature
rate-of-rise] [rate compensating] principle. Locate detectors in
accordance with their listing by UL or FM and the requirements of NFPA 72,
except provide at least two detectors in all rooms of 56 sq meters 600
square feet or larger in area. Temperature rating of detectors shall be in
accordance with NFPA 72. Reduce heat detector spacing in areas with
ceiling heights exceeding 3 meters 10 feet, in accordance with NFPA 72. No
detector shall be located closer than 305 mm 12 inches to any part of any
lighting fixture nor closer than 610 mm 24 inches to any part of an air
supply diffuser. Detectors, located in hazardous locations as defined by
NFPA 70, shall be types approved for such locations. Provide with terminal
screw type connections. Removal of detector head from its base shall cause
activation of system trouble signal. Detectors shall be weatherproof type.
2.7.1
Combination Fixed Temperature Rate-of-Rise Detectors
**************************************************************************
NOTE: Only single acting rate-of-rise heat
detectors may be specified for use with a pneumatic
detection system.
**************************************************************************
Designed for [surface] [semi-flush] outlet box mounting and supported
independently of conduit, tubing or wiring connections. Contacts shall be
self-resetting after response to rate-of-rise actuation. Operation under
fixed temperature actuation shall result in an external indication.
Detector units located in areas subject to abnormal temperature changes
shall operate on fixed temperature principle only.
2.7.2
Rate Compensating Detector
Designed for [surface] [flush] [vertical unit] outlet box mounting and
supported independently of conduit, tubing or wiring connections. Detectors
shall be hermetically sealed and automatically resetting type which will
operate when ambient air temperature reaches detector setting regardless of
rate of temperature rise. Detector operation shall not be subject to
thermal time lag.
2.8
OPEN-AREA (SPOT-TYPE) SMOKE DETECTORS
**************************************************************************
NOTE: Consult with the Division Fire Protection
Engineer before specifying 2 wire smoke detectors as
a Contractor option. 2 wire detectors must be
carefully matched to the control panel by the
manufacturer, and are not universally
interchangeable between systems for maintenance
purposes.
**************************************************************************
Designed for detection of abnormal smoke densities by
the [ionization] [or]
[photoelectric] principle. Provide necessary control
and power modules
required for operation integral with the main control
panel. Provide
detectors and associated modules which are compatible
with the main control
SECTION 13956N
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