all rooms of 54 square meters 600 square feet or larger in area. For
mounting heights greater than 3 m 10 feet above floor level, reduce actual
detector linear spacing from listed spacing as required by NFPA 72; for
heights greater than 9 m 30 feet space detectors no farther apart than 34
percent of their listed spacing. Mount detectors at the underside of
ceiling or deck above unless otherwise indicated. Temperature rating of
detectors shall be in accordance with NFPA 72. No detector shall be
located closer than 300 mm 12 inches to any part of any lighting fixture
nor closer than 600 mm 24 inches to any part of an air supply or return
diffuser. Detectors, located in areas subject to moisture or exterior
atmospheric conditions or 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 signals if detectors are provided with separable heads
and bases.
2.2.3.1
Combination Fixed Temperature Rate-Of-Rise Detectors (Spot Type)
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 boiler rooms, showers, or other areas subject to
abnormal temperature changes shall operate on fixed temperature principle
only.
2.2.3.2
Rate Compensating Detector (Spot Type)
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.
[2.2.3.3
Line-Type Fixed Temperature Detectors
**************************************************************************
NOTE: Specify line-type heat detectors only with
approval of the EFD/EFA Fire Protection Engineer.
**************************************************************************
Provide [thermostatic] [or] [thermister] line-type heat detection cable
[with weather-resistant outer covering] where indicated. Cable shall be
nominally rated for a temperature of [68] [88] [138] degrees C [155] [190]
[280] degrees F and shall operate on fixed temperature principle only.
]2.2.4
Open-Area (Spot-Type) Smoke Detectors
**************************************************************************
NOTE: Choose the type of smoke detector best suited
for application.
**************************************************************************
**************************************************************************
NOTE: Both 4-wire and 2-wire smoke detectors are
specified in this guide specification. For
open-area smoke detectors in new systems, edit this
specification to permit the Contractor the option to
SECTION 13852N
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