The "Fire Zone" message shall be broadcast through
Special Requirements. The following requirements take
speakers on the floor of alarm origin, the floor
precedence over the requirements in NFPA 72:
immediately above the floor of origin, and the floor
Visible notification appliances shall only be installed in
immediately below the floor of origin. In addition, the
projects that involve the installation of new fire alarm
visible alarm notification appliance circuit(s) shall be
systems.
activated on the floor of alarm origin, the floor
Visible notification appliances shall only be required to
immediately above the floor of origin, and one floor
be installed in public and common areas. For the purposes
immediately below the floor of origin. A first floor alarm
of this requirement, visible notification appliances shall
shall transmit a "Fire Zone" message to all below grade
not be required to be installed in individual offices. Public
levels.
and common areas include public rest rooms, reception
areas, building core areas, conference rooms, open office
The "Safe Area Zone" message shall simultaneously be
areas, etc.
broadcast to all other building floors. However, the visible
Visual notification appliance circuits shall have a minimum
alarm notification appliance circuit(s) shall not be
of 25 percent spare capacity.
activated on these floors. The "Safe Area Zone" message
shall activate for two complete rounds and silence
Visible notification appliances shall not be installed in exit
automatically. After five minutes, if the system is still in
enclosures (i.e., exit stairs, etc.).
an alarm condition, the "Safe Area Zone" message shall
automatically start and activate for two complete rounds
Fire Alarm Messages for High Rise Occupancies
and silence again. This sequence shall be repeated until
Upon receipt of any fire alarm signal, the fire alarm
the fire alarm system is reset. In the event a subsequent
system shall automatically activate a distinctive three-
fire alarm is received at the fire alarm control panel by
pulse temporal whoop pattern for three (3) cycles
a floor that was previously receiving a "Safe Area Zone"
followed by the specified automatic voice messages which
message, this floor shall automatically revert to perform
shall be repeated until the control panel is reset (i.e.,
the actions for a "Fire Zone" message.
three-pulse temporal whoop pattern - three-pulse
A live voice message shall override the automatic output
temporal whoop pattern - three-pulse temporal whoop
through use of a microphone input at the main fire
pattern - voice message; three-pulse temporal whoop
command center. When using the microphone, live
pattern - three-pulse temporal whoop pattern - three-
messages shall be broadcast through speakers in stairwells,
pulse temporal whoop pattern - voice message; etc.), or
in elevator cars, and throughout the selected floor or
until overridden by manually activated live voice
floors. Each stairwell shall have its own dedicated speaker
messages.
zone and speaker zone activation switch. Each elevator
The automatic voice messages shall be broadcast through
bank shall have its own dedicated speaker zone and
the fire alarm speakers on the specified floors, but not in
speaker zone activation switch. An "All Call" switch shall
exit stairs or elevator cars. However, the capability to
be provided which activates all speakers in the building
transmit voice messages to elevator cars and exit stairs
simultaneously.
shall be included, but be manual only.
221
FIRE
PROTECTION
&
LIFE
SAFETY
7.9
Fire Alarm Systems
Revised March 2005 PBS-P100
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