rate-of-rise portion of the detector shall consist of an air chamber,
flexible metal diaphragm and a moisture-proof calibrated vent which will
respond to a temperature rise exceeding 8 degrees C 15 degrees F per
minute. This portion of the detector shall be self-restoring after
actuation. The fixed temperature portion of the detector shall consist of
a fusible alloy that will melt and cause an alarm when the surrounding air
rises above the temperature rating of the detector. The detector shall
provide an external indication when the fixed temperature portion of the
detector actuates. Detector shall have a temperature classification rating
of [ordinary] [intermediate] as defined by NFPA 72.
2.15.1.3
Fixed-Temperature Heat Detector
Detector shall have a fusible alloy that will melt and cause an alarm when
the surrounding air rises above the temperature rating of the detector.
The detector shall provide an external indication upon actuation of the
detector. Detector shall provide a temperature classification rating of
[ordinary] [intermediate] as defined by NFPA 72.
2.15.2
Manual Actuation Station
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NOTE: Manual actuation stations are needed for
deluge systems only. Delete this paragraph for
preaction systems.
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Station shall be mounted at 1000 mm 42 inches above the floor, unless
otherwise shown. Station shall be arranged to activate the deluge system.
Station shall be dual-action type requiring two separate operations in
order to cause system discharge. Station shall be colored [lime yellow]
[_____] [a unique color dissimilar to color used for manual fire alarm
system]. Station shall be provided with a positive visible indication of
operation of the station. Station shall be weatherproof type and shall be
provided with an engraved label indicating DELUGE SYSTEM.
2.15.3
Sprinkler Pressure Alarm Switch
Pressure switch shall include a metal housing with a neoprene diaphragm,
SPDT snap action switches. The switch shall have a service pressure rating
of 1200 kPa 175 psi. There shall be two SPDT (Form C) contacts factory
adjusted to operate at 30 to 60 kPa 4 to 8 psi. The switch shall be
capable of being mounted in any position in the alarm line trim piping of
the alarm check valve.
2.15.4
Waterflow Alarm
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NOTE: Electric waterflow alarm bells are preferred.
Coordinate type and location of waterflow alarm
with the electrical designer.
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[Electrically operated, exterior-mounted, waterflow alarm bell shall be
provided and installed in accordance with NFPA 13. Waterflow alarm bell
shall be rated 24 VDC and shall be connected to the Fire Alarm Control
Panel (FACP) in accordance with Section [13850A FIRE DETECTION AND ALARM
SYSTEM, DIRECT CURRENT LOOP] [13851A FIRE DETECTION AND ALARM SYSTEM,
ADDRESSABLE]]. [Mechanically operated, exterior mounted, water motor alarm
SECTION 13945A
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