building fire alarm control panel or other remote
monitoring systems, and all power, control, alarm,
supervisory and interconnecting wiring. The
designer will indicate the complete zoning of
initiating devices and specify the descriptive zone
labeling for each corresponding system annunciator.
All areas to be protected with preaction sprinklers
must be equipped with the detectors necessary to
activate the sprinkler system.
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The control system shall meet the requirements of NFPA 72. The control
panel shall be listed in UL Fire Prot Dir or FM P7825a and FM P7825b for
"Releasing Device Service". The control panel and the solenoid valve that
activates the water control valves shall be compatible with each other.
Compatibility shall be per specific UL listing or FM approval of the
control equipment.
1.2.3.1
The primary operating power shall be provided from two single-phase 120 VAC
circuits. Transfer from normal to backup power and restoration from backup
to normal power shall be fully automatic and shall not initiate a false
alarm. Loss of primary power shall not prevent actuation of the respective
automatic water control valve upon activation of any alarm initiating
device. Backup power shall be provided through use of rechargeable,
sealed, lead calcium storage batteries.
1.2.3.2
Circuit Requirements
Alarm initiating devices shall be connected to initiating device circuits
(IDC), Style [D] [_____] or to signal line circuits (SLC), Style [6]
[_____], in accordance with NFPA 72. Alarm notification or indicating
appliances shall be connected to indicating appliance circuit (IAC), Style
[W] [X] in accordance with NFPA 72. A separate circuit shall be provided
for actuation of each individual automatic water control valve. The
circuits that actuate the water control valves shall be fully supervised so
that the occurrence of a single open or a single ground fault condition in
the interconnecting conductors shall be indicated at the control panel.
1.3
SYSTEM OPERATIONAL FEATURES
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NOTE: Delete manual actuation stations when not
required. For deluge systems, delete requirements
for supervisory air pressure.
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The system shall include a heat detection system, manual actuation
stations, supervisory and alarm switches, alarm notification appliances,
control panel and associated equipment. Preaction sprinkler system piping
shall be provided with supervisory air pressure not to exceed 210 kPa 30
psig.
1.3.1
System Actuation
Activation of any [single heat detector] [2 heat detectors] or a single
manual actuation station shall actuate alarm zone circuits of the control
SECTION 13945A
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