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Audible appliance shall have a minimum sound level output rating of [85]
[_____] dBA at 3.05 m 10 feet and operate in conjunction with the panel's
integral trouble signal. The audible device shall be silenced by the
system trouble silence switch located at the remote location, but shall not
extinguish the visual indicator. A rigid plastic, phenolic or metal
identification sign which reads "Fire Alarm System Trouble" shall be
provided at the audible appliance. The visual appliance located with the
audible appliance shall not be extinguished until the trouble has been
cleared.
2.1.2
Circuit Connections
Circuit conductors entering or leaving the panel shall be connected to
screw-type terminals with each conductor and terminal marked for
identification.
2.1.3
System Expansion and Modification Capabilities
Any equipment and software needed by qualified technicians to implement
future changes to the fire alarm system shall be provided as part of this
contract.
2.2
STORAGE BATTERIES
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NOTE: The fire alarm system may interface with
auxiliary systems or subsystems; ensure that
adequate battery backup is available, if the fire
alarm system provides the power.
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Storage batteries shall be provided and shall be 24 Vdc sealed,
lead-calcium type requiring no additional water. The batteries shall have
ample capacity, with primary power disconnected, to operate the fire alarm
system for a period of 72 hours. Following this period of battery
operation, the batteries shall have ample capacity to operate all
components of the system, including all alarm signaling devices in the
total alarm mode for a minimum period of 15 minutes. Batteries shall be
located [at the bottom of the panel] [in a separate battery cabinet].
Batteries shall be provided with overcurrent protection in accordance with
NFPA 72. Separate battery cabinets shall have a lockable, hinged cover
similar to the fire alarm panel. The lock shall be keyed the same as the
fire alarm control panel. [Cabinets shall be painted to match the fire
alarm control panel.]
2.3
BATTERY CHARGER
Battery charger shall be completely automatic, 24 Vdc with high/low
charging rate, capable of restoring the batteries from full discharge (18
Volts dc) to full charge within 48 hours. A pilot light indicating when
batteries are manually placed on a high rate of charge shall be provided as
part of the unit assembly, if a high rate switch is provided. Charger
shall be located in control panel cabinet or in a separate battery cabinet.
2.4
MANUAL FIRE ALARM STATIONS
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SECTION 13850A
Page 17
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