herein. Activation of any initiating device other than an area smoke
detector shall cause immediate enabling of system into alarm mode. If an
alarm input from a smoke detector on the initial zone in alarm is present
at the end of an initial delay period not exceeding 20 seconds, all alarm
functions as specified herein shall be immediately enabled. If a smoke
detector alarm input is not present at the end of the initial delay period,
a second-stage confirmation period of one minute shall be initiated. If a
smoke detector alarm input is received during the second-stage confirmation
period, all alarm functions shall be immediately enabled. During the
verification process, activation of any area smoke detector on any zone
other than the initial zone in alarm shall also cause system to go into
alarm mode immediately. If no smoke detector alarm input occurs within the
second-stage confirmation period, system shall reset to normal. Any alarm
input received from an area smoke detector after the second-stage
confirmation period has elapsed shall cause system to institute a new
verification process.
][2.1.1.6
Elevator Recall
**************************************************************************
NOTE: Delete this paragraph if no elevator work is
included in the project.
**************************************************************************
Provide elevator recall system in accordance with ASME A17.1, Section [
14210N ELECTRICAL TRACTION ELEVATORS] [14240 HYDRAULIC ELEVATORS], and as
specified herein. Activation of any smoke detector in an elevator shaft,
machine room, or lobby (except at designated recall level) shall cause all
elevators associated with that shaft, machine room, or lobby to return
nonstop to the designated level. Activation of a smoke detector in the
lobby or machine room at the designated level shall cause all elevators
associated with that lobby to return nonstop to the assigned alternate
level. Activation of a detector in an elevator shaft, machine room, or
lobby shall also cause complete operation of fire alarm system as specified
in paragraph titled "Operation".
]2.1.2
Primary Power
**************************************************************************
NOTE: Consult with the EFD/EFA for guidance on use
of safety switch.
**************************************************************************
Primary power source shall be 120 volts AC service, transformed through a
two winding isolation type transformer and rectified to 24 volts DC for
operation of all initiating device, notification appliance, signaling line,
trouble signal and [master box] [transmitter] tripping circuits. The alarm
current draw of the entire fire alarm system shall not exceed 80 percent of
the rated output of the system power supply module(s). Obtain AC operating
power as shown on contract drawings. [Provide an independent properly
fused safety switch, with provisions for locking the cover and operating
handle in the "POWER ON" position for this connection located adjacent to
main distribution panel. Paint the switch box red and identify it by the
lettered designation "FIRE ALARM SYSTEM POWER".]
2.1.3
Auxiliary Power
Provide secondary DC power supply for operation of system in the event of
failure of the AC source. Transfer from normal to emergency power or
SECTION 13852N
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