Technical data

SUREFIRE® SINGLE
INTERLOCKED PRE-PRIMED
PREACTION SYSTEM
TECHNICAL DATA
August 31, 2006
Preaction 353b
In Fire conditions:
When the detection system (F.9) operates, the PAR-3 Control Panel (F.8) activates a piezo sounder and energizes normally closed
Release Solenoid Valve (F.2) open. Pressure is released from the priming chamber faster than it is supplied through restricted orifice
(B.3). The Deluge Valve (A.1) clapper opens to allow water to pressurize the system piping and alarm devices. Water enters the
system and Easy Riser® Check Valve (D.2) which continually vents and pressurizes the PORV (B.10) prime chamber. Water will flow
from any open sprinklers or nozzles.
To return the system to “Normal” conditions, drain the system piping and replace any sprinklers that may have operated. Replace any
detectors which have been damaged and place the system in service in accordance with Section 9. Press the “System Reset” button
on the PAR-3 Control Panel (F.8) to clear all alarms.
Panel Trouble, Loss of Power Prior to Operation or Pipe Damage conditions: During Normal Power Supply
Conditions, faults or complete loss of power.
During normal power conditions if the system piping and/or the sprinklers are damaged, the low pressure supervisory switch (E.1)
will activate a supervisory alarm at the Par-3 Release Control Panel (F.8) and the normally open solenoid valve (F.6) will be powered
closed to prevent the deluge valve from opening. This action limits any water flow from the damaged pipe and/or sprinklers to the
volume of water in the pre-primed pipe network.
In the event of a fire during a fault on the detection wiring, loss of primary AC power which has caused a trouble condition or complete
loss of all power, the deluge valve will open allowing water flow if the following conditions occur:
1. The initiating devices (F.9) activate causing the Par-3 Release Control Panel (F.8) to enter an alarm and release condition. The
normally closed solenoid (F.2) will open allowing water pressure to be relieved from the priming chamber of the deluge valve (A.1).
With pressure relieved from the priming chamber, the deluge valve will open and allow water flow. Water will not be discharge into
the protected area until a sprinkler head operates.
2. During a fault condition on the detection wiring or panel which caused a trouble alarm on the Par-3 Release Control Panel (F.8) or
a complete loss of normal AC power and standby battery backup power the normally open solenoid ( F.6) is prevented from operat-
ing. During this condition activation of a sprinkler head will allow a hydraulic release of the deluge valve (A.1). Water pressure will
be relieved from the priming chamber, the deluge valve (A.1) will open and allow water to flow.
Loss of Power During Operation:
If all power fails while the system is flowing water, the normally open Release Solenoid (F.6) will open and the normally closed Release
Solenoid (F.2) will close. The PORV (B.10) is already pressurized closed to prevent pressure in the chamber from building up. Water
from main supply will continue entering the system, and through any open sprinkler(s).
Manual Operation:
Any time the handle inside Emergency Release (B.11) is pulled, pressure is released from the priming chamber faster than it can be
replaced through the priming line; the Deluge Valve (A.1) will open. Water will flow to the system piping, activating any connected
alarms, but will not discharge from any closed sprinklers attached to the system until a sprinkler has operated, as in a fire. All alarms
will operate normally. After operating the Emergency Release (B.11), do not close the Emergency Release until the system is ready
to be reset.
8. INSTALLATION
Refer to current Viking Technical Data describing individual components of the Viking SUREFIRE® Single Interlocked Pre-Primed
Preaction System. Technical Data describing the Viking Deluge Valve and other system components are packed with product and in
the Viking Engineering Design Data book.
Also, refer to applicable installation standards, codes, and Authorities Having Jurisdiction.
A. The Deluge Valve (A.1) and Conventional Trim must be installed only in areas where they will not be subjected to freezing tempera-
tures or mechanical damage.
B. All indicating appliances and releasing devices must be compatible and approved for use with the SUREFIRE® Single Interlocked
Pre-Primed Preaction System. Refer to appropriate Fire Protection Equipment Approval Guides and current Viking Technical Data
describing individual components of the Viking SUREFIRE® System.
C. Use Normally Open Heat Detectors (F.9) or Smoke Detectors and Viking Cable as listed for the protection.
9. PLACING THE SYSTEM IN SERVICE AT INITIAL START-UP
(Refer to Figure 1)
NOTE: REFER TO PAR-3 OWNER’S MANUAL, AND INSTRUCTIONS PROVIDED IN TECHNICAL DATA DESCRIBING THE
VIKING DELUGE VALVE AND OTHER SYSTEM COMPONENTS.
To Place the System in Service:
A. Verify that the PAR-3 Control Panel (F.8), Detector Circuits and Detectors have been properly installed and energized according to
instructions provided in Viking Technical Data and the PAR-3 Owner’s Manual.