NOTE: Regarding the text below, use this paragraph
if project has Section 13852, "Interior Fire Alarm
System."
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[Provide in each air-handling system with supply air capacity greater than
944 L/s 2000 cfm in accordance with NFPA 90A. Locate downstream of the
supply air filters and prior to any branch connection in accordance with
NFPA 72. Provide in each air-handling system, serving more than one story,
and having a return air capacity greater than 7079 L/s15000 cfm in
accordance with NFPA 90A. Locate at each story prior to connection to
common return and at return connection to air handler prior to any fresh
air inlet connection and prior to any recirculation connection in
provision for automatic and manual operation by means of a key-operated
switch to override any other shutdown features and shall be located
[adjacent to the fire alarm system control panel] [as indicated].]
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NOTE: Regarding the text below: Use this paragraph
if building has an existing fire evacuation alarm
system. For connection to existing system, designer
must determine if the existing fire alarm control
panel is compatible with smoke detectors and has
spare zone capacity. Edit accordingly. When in
doubt leave choice of connection to fire alarm panel
antiquated alarm systems, it may be necessary to
replace the control panel in which case Section
13852, "Interior Fire Alarm System" must be included
in project and the first option should be used.
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[Provide in each air-handling system with supply air capacity greater than
944 L/s 2000 cfm in accordance with NFPA 90A. Locate downstream of the
supply air filters and prior to any branch connection in accordance with
NFPA 72.
Provide in each air-handling system, serving more than one story, and
having a return air capacity greater than 7079 L/s 15000 cfm in accordance
with NFPA 90A. Locate at each story prior to connection to common return
and at return connection to air handler prior to any fresh air inlet
connection and prior to any recirculation connection in accordance with
NFPA 72. Design for detection of abnormal smoke densities by the
[ionization] [or] photoelectric principle, responsive to both invisible and
visible particles of combustion, and not susceptible to undesired operation
Provide UL listed or FM approved detectors for duct installation. Provide
duct detectors with an approved duct housing, mounted exterior to the duct,
and with perforated sampling tubes extending across the width of the duct.
Provide permanent descriptive zone labels indicating in which air-handling
units the detectors in alarm are located.
Provide detectors with a test port [, test switch] [and] [or] [, remote
keyed test device]. Provide control and power modules required for
main building fire alarm control panel]. A ground fault or single break or
open condition in electrical circuitry to any detector or its control or
SECTION 15901N
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