NFPA 20, NFPA 72, and as specified herein. Provide separate alarm and
supervisory circuits between radio transmitter and controller. Actuation
of controller "pump running" contact shall cause transmission of a
distinctly identifiable signal which shall be displayed and annunciated by
the receiving networks specified herein as an alarm. Actuation of other
controller remote alarm contacts required by NFPA 20 shall cause
transmission of distinctly identifiable signals which shall be displayed
and annunciated by the receiving networks specified herein as supervisory
signals.
]2.14
DRY CONTACT INITIATING DEVICES
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NOTE: Use the following paragraphs when new
initiating devices must be provided for direct
connection (not through a protected premises control
unit) to radio transmitters, and there is no other
need for inclusion of extinguishing system technical
specification sections in the contract. Edit as
appropriate for the project.
**************************************************************************
Provide connections from dry contact initiating devices to radio
transmitters as indicated, in accordance with NFPA 72 and as specified
herein. As used herein, the term "dry contact initiating device" shall be
interpreted to mean a non-powered, contact-transfer initiating device,
connected directly to a radio alarm transmitter specified herein in lieu of
being connected to a protected premises system control unit. Such devices
include, but are not limited to the following: Manual fire alarm boxes,
sprinkler waterflow alarm initiating devices, fire extinguishing system
discharge alarm initiating devices, valve position supervisory signal
initiating devices, pressure supervisory signal initiating devices, water
level supervisory signal initiating devices, and temperature supervisory
signal initiating devices. Except as indicated, dry contact initiating
devices are [existing where shown] [or] [specified in other sections].
[2.14.1
Sprinkler Waterflow Alarm Initiating Devices
Provide in accordance with NFPA 13, NFPA 25, NFPA 72, UL 346, and as
specified herein. [Provide vane(paddle)-type water flow detectors mounted
on wet system risers above system check valves where indicated. Provide
device with adjustable mechanical diaphragm-controlled retard device.]
[Provide pressure switches without retard device which respond to pressure
increase on the water-motor alarm lines of dry pipe, preaction, and deluge
valves where indicated; install switch on system side of alarm shutoff
valve.] [Provide pressure switches with mechanical diaphragm-controlled
retard device which respond to pressure increase on water motor alarm lines
of wet pipe alarm check valves; install switch on the system side of the
alarm shutoff valve.] Retard devices shall be adjustable from 0-90
seconds, and shall instantly recycle when pressure or flow is removed.
Activation of device shall cause transmission of a distinctly identifiable
signal which shall be displayed and annunciated by the receiving networks
specified herein as an alarm. Provide devices with tamper-resistant covers.
]2.14.2
Fire Extinguishing System Discharge Alarm Initiating Devices
[Provide pressure sensing devices without retard mechanism on [gaseous,]
[wet chemical,] [dry chemical,] [and] [clean agent] fire extinguishing
systems in accordance with [NFPA 12,] [NFPA 12A,][NFPA 17,] [NFPA 17A,]
SECTION 13853N
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