Preaction System; Description; Configuration; Release - FireFlex Systems Inc. N2 BLAST Owner's Operation & Maintenance Manual

3. PREACTION SYSTEM

3.1 DESCRIPTION

The preaction system in the F
fire protection system by F
a preaction system trim totally pre-assembled, pre-wired
and factory tested.
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 detection and alarm connections, as well as the
AC power line(s). 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 F F N Blast
IRE LEX
2
the Viking trim using deluge valve model F-1.
The valve is rated up to a maximum of 250 psi (1724 kPa)
working water pressure max. and is available in the
following diameters:
1½" (40 mm)
4" (100 mm)
Page 4 of25
F F
IRE LEX
Integrated Fire Protection System
O ' O
WNER S PERATION
® ®
F N Blast integrated
IRE LEX
2
F Systems Inc. consists of
IRE LEX
All electrical and mechanical
preaction system is built around
2" (50 mm) 3" (80 mm)
® ®
N B
LAST
2
& M M
AINTENANCE ANUAL

3.3 RELEASE

Release trim for the electric / pneumatic operated
double interlocked preaction system utilizes a normally
closed solenoid valve (F1) controlled by the Viking
VFR-400 integrated control panel with a compatible
detection system (supplied by others) and a pneumatic
actuator (F3) normally held closed by supervisory air
pressure maintained in the sprinkler piping.
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
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.
condition and supervisory
FM-076B-0-6A