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®
DUAL
Integrated Fire Protection System
OWNER'S OPERATION & MAINTENANCE MANUAL
FM-0860-0-31F
3. PREACTION SYSTEM
3.1 DESCRIPTION
The preaction system in the
FIREFLEX
®
DUAL integrated fire
protection system by F
IREFLEX Systems Inc. consists of a
preaction system trim totally pre-assembled, pre-wired and
factory tested. All electrical and mechanical components of
the system are contained in one single unit.
The only connections required for installation are the water
supply inlet, water discharge outlet, main drain, the electrical
devices and alarm connections to an approved releasing
control panel. The discharge outlet is connected to a fixed
piping system of automatic sprinklers. Water is the
extinguishing agent.
The sprinklers network is supervised with compressed air or
gas. If the sprinklers piping or sprinkler is broken, the deluge
valve will not open.
3.2 CONFIGURATION
The
FIREFLEX
®
DUAL preaction system is built around the
Viking trim using deluge valve model F-1.
The valve is rated up to a maximum of 250 psi (17.2 bar)
working water pressure max. and is available in the following
diameters:
• 2" (50 mm)
• 3" (80 mm)
FIREFLEX
®
DUAL preaction system is supplied with flange–
groove deluge valve.
3.3 RELEASE
Release trim for the electric / pneumatic operated double
interlocked preaction system utilizes a normally closed
solenoid valve (F1) controlled by an approved release
control panel with a compatible detection system, and a
pneumatic actuator (F3) normally held closed by
supervisory air pressure maintained in the sprinkler piping.
The
FIREFLEX
®
DUAL system utilizes a detection system,
the same as clean agent.
In fire condition, the release control panel energizes the
solenoid valve (F1) and an open sprinkler releases the
supervisory air pressure from the sprinkler piping. Both
the electric detection condition and supervisory pressure
relieved from the sprinkler piping are necessary before the
deluge valve (A1) will open and fill the sprinkler piping with
water. Water will flow from any opened sprinklers in the
system piping.
Note: If the detection system does not operate
properly, the deluge valve (A1) will not open.
To prevent false discharge, if the detection system
operates alone due to fire, damage or malfunction, the
deluge valve (A1) will not open. If the sprinkler piping is
damaged or a sprinkler is broken or fused, the deluge
valve (A1) will not open either.
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