Viking FIRECYCLE III Instruction Manual

September 28, 1998
A. SYSTEM DESCRIPTION
(Refer to Figure 1, page 428 c.)
®
The Viking Firecycle III Cycling Wet-
pipe System utilizes a Viking Model H-1
Flow Control Valve (A.1) and a Firecy-
®
cle III Control Panel (E.3), together with
additional valves, devices and trim to
form a unique operating system.
The cycling wet configuration operates
®
the Firecycle III System as a normal
wet pipe system with the ability to sense
when the fire has been controlled, and
automatically turn off the water flow after
a preprogrammed "Soak Timer" has
been satisfied. Should the fire rekindle,
®
Firecycle III will initiate the sequence
again. This unique cycling feature will
continue to operate as long as neces-
sary, provided power is available to the
panel, and helps to minimize water us-
age, water damage, and the danger of
pollution to surrounding areas. Batteries
are available to provide up to ninety (90)
hours of emergency power. If the AC
power fails and the battery backup
power expires while the system is oper-
ating, the deluge system will "fail-safe",
and continue flowing until AC power is
restored or the system is manually shut-
off.
®
The Firecycle III Cycling Wetpipe Sys-
tem has several "fail-safe" features
which are not available on standard wet
pipe systems. Refer to Section B "Sys-
tem Operation" for details.
Wetpipe systems are commonly used
where, when the system operates, it is
desirable to discharge water immedi-
ately from any sprinklers on the system
which may have operated, as in a fire.
Consult all Authorities Having Jurisdic-
tion prior to installing a Firecycle
Wetpipe System. The system requires
use of a Viking Flow Control Valve and
trim kit with two Electric Release Sole-
noid Valves (E.1 and E.2) controlled by
®
the Firecycle III Control Panel (E.3),
®
Firecycle Detectors (E.4), and Detector
Cable (E.5). The detector temperature
must be lower than the lowest tempera-
ture-rated sprinkler being used. For
proper location, spacing, and positioning
of detectors, refer to technical data de-
®
scribing Viking Firecycle
In fire conditions, when the detection
system (E.4) operates, the Firecycle
Control Panel (E.3) energizes normally
closed Release Solenoid Valve #1 (E.1)
open, and energizes normally open Re-
lease Solenoid Valve #2 (E.2) closed,
causing Flow Control Valve (A.1) to
open, allowing water to flow through the
system piping. Water will flow from any
sprinklers attached to the system which
may have operated. When downstream
Form No. F_100696
SYSTEM DATA
water pressure exceeds water supply
pressure, the Flow Control Valve (A.1)
performs as a hydraulically operated
check valve to prevent reverse flow.
NOTE: Firecycle
tem, and is listed as a unit. As such, it
is normally not possible to modify the
components of the system controls or
their inter-relation without compromising
the listing.
For information on current approvals
and permissible modifications to Firecy-
®
cle III, contact The Viking Corporation,
Hastings, Michigan 49058 USA, Atten-
tion: Sales Department.
B. SYSTEM OPERATION
(Refer to Figure 1, page 428 c.)
In the NORMAL condition:
System water supply pressure enters
the priming chamber of the Flow Control
Valve (A.1) through the 1/4" (8 mm)
priming line which includes a Strainer
(B.2), restricted orifice (B.3) and Check
Valve (B.4). Normally open Release So-
lenoid Valve #2 (E.2) allows priming
water to escape so that the Flow Control
Valve (A.1) will not set, but remain open,
filling the system piping with water.
In Fire conditions:
In fire conditions, when the Firecycle
detection system (E.4 and E.5) oper-
ates, the Firecycle
(E.3) activates a piezo sounder and en-
ergizes normally closed Release Sole-
noid Valve #1 (E.1) open and normally
open Release Solenoid Valve #2 (E.2)
closed. Pressure continues to be re-
leased from the priming chamber faster
than it is supplied through the restricted
orifice (B.3). The Flow Control Valve
(A.1) clapper remains fully open to allow
®
III
water to flow through the system piping
and to activate alarm devices, including
a Water Flow Alarm Switch (C.1). Water
will immediately flow from any sprinklers
attached to the system which may have
operated. Water Flow Alarm Switch
(C.1) activates, latching normally open
Release Solenoid Valve #2 (E.2)
closed. Water discharges until all
Firecycle
below their set point). After all detectors
have reset, the Firecycle
Detectors.
Panel (E.3) activates the "Soak Timer",
allowing the system to continue dis-
®
III
charging water for a preset time period.
When the "Soak Timer" has expired, the
Firecycle
ergizes normally closed Release Sole-
noid Valve #1 (E.1), allowing it to close.
(The normally open Release Solenoid
Valve #2 (E.2) remains energized
closed until the Firecycle
Panel is manually reset, or both AC
power and battery backup have failed.)
®
III is a complete sys-
®
III Control Panel
®
Detectors have reset (cooled
®
III Control
®
III Control Panel (E.3) de-en-
®
III Control
FIRECYCLE
CYCLING WET PIPE
SYSTEM
The Flow Control Valve (A.1) re-primes
and closes, stopping the flow of water
through the system piping.
Should a Firecycle
alarm at this time, the Firecycle
trol Panel (E.3) re-energizes normally
closed Release Solenoid Valve #1 (E.1)
open, and the entire cycle repeats.
To return the system to "Normal" condi-
tions, drain the system piping and re-
place any sprinklers which may have
operated, and any Firecycle
which have been damaged. Open the
Emergency Release (B.11) to allow the
system pressure to return to normal.
Once the pressure has stabilized, close
the Emergency Release (B.11) and
press the "System Reset" button on the
®
Firecycle III Control Panel (E.3).
Trouble conditions:
If the detection system is damaged or
malfunctions, the Firecycle
Panel will initiate the appropriate alarms,
and the Flow Control Valve (A.1) will
open. Water will not flow from any sprin-
klers until a sprinkler has operated, as in
a fire. The cycling function of the Firecy-
®
cle III System will not operate in this
condition, and the system must be
manually shut off. All alarms will operate
®
III
normally.
If the piping system is damaged suffi-
ciently to activate the Water Flow Alarm
Switch (C.1), the Firecycle
Panel (E.3) will energize normally open
Release Solenoid Valve #2 (E.2)
closed. Because a detector has not
gone into alarm mode, Release Sole-
noid Valve #1 (E.1) will remain ener-
gized closed. The Flow Control Valve
(A.1) will re-prime and close after a short
delay. This feature ensures that should
a sprinkler or the system piping become
damaged, the amount of water which
will discharge is limited by the system
pressure and the location of the system
For technical data,
installation, maintenance,
and testing instructions
for individual system
components, refer to current
Viking technical data
describing individual
components of the
system being used.
Viking technical data may be found on
The Viking Corporation's Web site at
http://www.vikingcorp.com.
The Web site may include a more recent
edition of this technical data page.
Replaces page 428 a-d, dated August 1, 1997
(updated title block to reflect patent pending).
®
Firecycle III 428 a
® III
Pat. Pend.
®
Detector go into
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III Con-
®
Detectors
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III Control
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III Control