Viking FIRECYCLE III Quick Start Manual

March 15, 2004
A. SYSTEM DESCRIPTION
(Refer to Figure 1 or 2 on page 426 d.)
®
The Viking Firecycle III Cycling Double
Interlocked Preaction System utilizes a
Viking Model H or J Flow Control Valve
(A.1), a Viking Easy Riser™ Check
Valve (A.2), and a Firecycle
Panel (E.3), with additional valves, de-
vices, and trim to form a unique operat-
ing system. The system piping is nor-
mally dry and may be installed in loca-
tions subject to freezing. The system
piping is pneumatically pressurized
[minimum 30 psi (207 kPa)] to monitor
the integrity of the piping, fittings, and
sprinklers and to act as a fail-safe emer-
gency backup to the electrical detection
system.
In addition to automatically detecting a
fire and turning the system
®
Firecycle III has the added ability to
sense when the fire has been controlled,
and automatically turn off the water flow
once a preprogrammed "Soak Timer"
has been satisfied. If the fire rekindles,
®
the Firecycle III will initiate the se-
quence again. This unique cycling fea-
ture will repeat as long as power is avail-
able to the panel, helping to minimize
water usage, 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 A.C. Power fails and the battery
backup power expires while the system
is operating, the deluge system will
"fail-safe", and continue flowing until
A.C. Power is restored or the system is
manually shut-off.
®
The Firecycle III Cycling Double Inter-
locked Preaction system has several
fail-safe features, some of which are not
available on other preaction systems.
Refer to Section B "System Operation"
for details.
Preaction systems are commonly used
to help minimize accidental water dam-
age and still provide fast water dis-
charge during a fire. Consult all Author-
ities Having Jurisdiction prior to install-
®
ing a Firecycle III Preaction System.
The system requires use of a Viking
Flow Control Valve and trim kit with two
electric Release Solenoid Valves (E.1)
and (E.2) controlled by the Firecycle
Control Panel (E.3), Firecycle
tors (E.4), and Detector Cable (E.5).
The detector temperature must be lower
than the lowest temperature rated sprin-
kler being used. For proper location,
spacing, and positioning of detectors,
refer to Technical Data describing Vi-
®
king Firecycle Detectors.
A "Double Interlocked" system requires
both electrical detection and loss of sys-
Form No. F_100596
SYSTEM DATA
tem air pressure before water is allowed
to enter the system piping.
NOTE:
®
Firecycle
is listed as a unit. As such, it is normally
not possible to modify the components
of the system
®
III Control
inter-relation without compromising the
listing.
Approvals:
UL Listed, Category VLLA
Accepted for use by City of New York
Department of Buildings.
MEA 89-92-VXVII for Refrigerated
Rooms
B. SYSTEM OPERATION
(Refer to Figure 1 or 2 on page 426 d.)
In the SET condition:
System water supply pressure enters
on,
the priming chamber of the Flow Control
Valve (A.1) through the 1/4" (8 mm)
priming line, which includes a normally
open priming valve (B.1), strainer (B.2),
restricted orifice (B.3), and check valve
(B.4). In the SET condition, water supply
pressure is trapped in the priming cham-
ber by a check valve (B.4), normally
closed Release Solenoid Valve #1 (E.1),
Pneumatic Actuator (B.6), and normally
closed Emergency Release (B.11). Wa-
ter Supply pressure in the priming cham-
ber holds the clapper of the Flow Control
Valve (A.1) on the seat due to the differ-
ential design of the valve and spring
pressure. The clapper separates the in-
let chamber from the outlet chamber,
keeping the outlet chamber and system
piping dry.
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 initi-
ates the appropriate detection alarms.
No water enters the system piping at this
time. When a sprinkler operates, as from
a fire, system supervisory air pressure is
lost, and the Low Air Pressure Supervi-
sory Switch (E.6) is activated only after
both indicating circuits have operated.
The Firecycle
energizes normally closed Release So-
lenoid Valve #1 (E.1) open and normally
open Release Solenoid Valve #2 (E.2)
®
III
closed. Pressure is released from the
®
Detec-
priming chamber faster than it is sup-
plied through a restricted orifice (B.3).
The Flow Control Valve (A.1) clapper
opens to allow water to flow into the sys-
AIR PRESSURE SETTINGS
Water
0-175
175-250
III is a complete system, and
controls or their
®
III
®
III Control Panel
®
III Control Panel (E.3)
System Detection Detection
Air Circuit #1 Circuit #2
30+ 25 30
50+ 40 50
Replaces page 426a-d dated April 28, 2000. (Added refer-
ence to Model J Straight Through Flow Control Valve, and
added MEA Approval and Pressure Setting Chart.)
Firecycle
®
FIRECYCLE III
CYCLING DOUBLE
INTERLOCKED PREACTION
tem piping and to any optional alarm de-
vices, such as an alarm pressure switch
and/or a water motor gong. Water en-
tering the system operates and hydrauli-
cally latches the Pressure Operated Re-
lief Valve (PORV) (B.10) open. Water
will flow from any open sprinklers or noz-
zles. Water discharges
®
Firecycle Detectors have
(cooled below their set point). After all
detectors have reset, the Firecycle
Control Panel (E.3) activates the "Soak
Timer", allowing the system to continue
discharging water for a preset time pe-
riod. When the "Soak Timer" has ex-
®
pired, the Firecycle III Control Panel
(E.3) de-energizes normally closed Re-
lease Solenoid Valve #1 (E.1), allowing
it to close. (The normally open Release
Solenoid Valve #2 (E.2) remains ener-
gized closed until the Firecycle
trol Panel is manually reset, or both A.C.
Power and battery backup have failed.)
The Flow Control Valve (A.1) re-primes
and closes, stopping the flow of water
through the system piping.
®
If a Firecycle Detector goes into alarm,
®
the Firecycle III Control 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 that may have oper-
ated. Replace any Firecycle
that have been damaged
re-establish system air pressure. Press
the "System Reset" button on the
®
Firecycle III Control Panel (E.3) to clear
all alarms.
Trouble conditions:
If the system piping and/or the sprinklers
are damaged and either the AC Power
and/or Standby Battery Power is avail-
able, the low air supervisory switch will
For Technical Data,
Installation, Maintenance,
and Testing Instructions for
individual system compo-
nents, refer to current
Viking Technical Data
describing individual
components of the
system 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.
®
III 426 a
until all
reset.
®
III
®
III Con-
®
Detectors
and