Viking FIRECYCLE III User manual

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®III Control
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 on,
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®III
Control Panel (E.3), Firecycle®Detec-
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-
tem air pressure before water is allowed
to enter the system piping.
NOTE:
Firecycle®III is a complete system, 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.
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
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®III
detection system (E.4 and E.5) oper-
ates, the Firecycle®III Control Panel
(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®III Control Panel (E.3)
energizes normally closed Release So-
lenoid Valve #1 (E.1) open and normally
open Release Solenoid Valve #2 (E.2)
closed. Pressure is released from the
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-
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 until all
Firecycle®Detectors have reset.
(cooled below their set point). After all
detectors have reset, the Firecycle®III
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®III Con-
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®Detectors
that have been damaged and
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
Form No. F_100596
Firecycle®III 426 a
SYSTEM DATA
March 15, 2004
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.
FIRECYCLE®III
CYCLING DOUBLE
INTERLOCKED PREACTION
Water System
Air
Detection
Circuit #1
Detection
Circuit #2
0-175 30+ 25 30
175-250 50+ 40 50
AIR PRESSURE SETTINGS
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.)
OBSOLETE

initiate a trouble alarm at the Firecycle®
III Control Panel (E.3).
If the detection system is damaged or
malfunctions, the Firecycle®III Control
Panel will initiate all appropriate alarms.
The Flow Control Valve (A.1), however,
will not open, and no water will enter
the system piping. If a sprinkler oper-
ates during this condition, water will fill
the system piping, activating any con-
nected alarms, and will discharge from
any opened sprinklers attached to the
system. The cycling function of the
Firecycle®III System will not operate in
this condition, and the system will need
to be manually turned off. All alarms will
operate normally.
Loss of AC Power Prior to Operation:
If the AC power fails, the Firecycle®III
System continues to operate on the
standby batteries. The Firecycle®III
Control Panel (E.3) will initiate a trouble
alarm and activate the piezo sounder. If
the AC power and the standby batteries
fail prior to the operation of the system,
all alarms will be lost. As long as air pres-
sure remains in the system piping, the
Pneumatic Actuator (B.6) will keep the
Flow Control Valve (A.1) from opening.
If the system air pressure is lost in this
condition, the Flow Control Valve (A.1)
will open, allowing water to flow into the
system piping and be discharged from
any open sprinklers. The cycling func-
tion of the system will not operate in this
condition, and the system must be man-
ually shut-off.
Loss of Power During Operation:
If all power fails while the system is flow-
ing water, the normally open Release
Solenoid #2 will fail open. The cycling
function of the system will not operate in
this condition, and the system must be
manually shut-off.
Manual Operation:
Any time the handle inside Emergency
Release (B.11) is pulled, pressure is re-
leased from the priming chamber faster
than it can be replaced through the prim-
ing line; the Flow Control Valve (A.1) will
open. Water will fill 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. The cycling
function of the Firecycle®III System will
not operate in this condition due to the
open Emergency Release (B.11). All
alarms will operate normally. After oper-
ating the Emergency Release (B.11), do
not close the Emergency Release until
the system is ready to be reset.
These fail-safe features ensure that the
Firecycle®III System continues to pro-
vide sprinkler protection even when the
detection system and/or the system pip-
ing have been damaged.
C. INSTALLATION
Refer to current Viking Technical Data
describing individual components of the
Viking Firecycle®III System. Technical
Data describing the Viking Flow Control
Valve and other system components are
packed with product and in the Viking
Engineering and Design Data book.
Also, refer to applicable installation stan-
dards, codes, and Authorities Having
Jurisdiction.
1. The Flow Control Valve (A.1) and
Trim must be installed only in areas
where they will not be subjected to
freezing temperatures.
2. All initiating devices (detectors), indi-
cating appliances, and releasing de-
vices must be compatible and ap-
proved for use with the Firecycle®III
System. Refer to appropriate Fire
Protection Equipment Approval
Guides and current Viking Technical
Data describing individual compo-
nents of the Viking Firecycle®III Sys-
tem.
D. EMERGENCY INSTRUCTIONS
(Refer to Figure 1 or 2 on page 426 d.)
Taking System Out of Service:
WARNING: Placing a control valve or
detection system out of service may
eliminate the fire protection capabilities
of the system. Prior to proceeding, notify
all Authorities Having Jurisdiction. Con-
sideration should be given to employ-
ment of a fire patrol in the affected areas.
After a fire, verify that the fire is OUT and
that placing the system out of service
has been authorized by the appropriate
Authority Having Jurisdiction.
Sprinkler systems that have been sub-
jected to a fire must be returned to ser-
vice as soon as possible. The entire sys-
tem must be inspected for damage and
repaired or replaced as necessary.
1. If All System Components Are
Operational:
A. Open System Drain (D.3).
B. Silence alarms (optional).
1. To silence electric alarms con-
trolled by Firecycle®III Control
Panel (E.3), open the panel
and press “ALARM SILENCE”
2. To silence electric alarms not
controlled by Firecycle®III
Control Panel (E.1), close the
Alarm Shut-Off Valve (B.9).
Note: Electric Alarms con-
trolled by a pressure switch in-
stalled in the ½" (15 mm) NPT
connection for a Non- inter-
ruptible Alarm Pressure
Switch cannot be shut off until
the Flow Control Valve is reset
or taken out of service.
C. To return to service immediately
(when no maintenance or repairs
are required):
1. Close System Drain (D.3) if
opened in Step 1-A.
2. Restore system air pressure.
3. Open the Firecycle®III Control
Panel (E.3) and press “RE-
SET”.
4. Open the Alarm Shut-Off Valve
(B.9) (if it was closed in step
1-B.2 above).
5. Close the System Drain (D.3).
6. Verify that all valves are se-
cured in their normal operating
position. (Refer to Figure 1 or 2
on page 426 d.)
2. If it is necessary to remove the
Firecycle®III System from service:
A. Close the Main Water Supply con-
trol Valve (D.1).
B. Close Priming Valve (B.1) (op-
tional). If necessary, open the
System Drain (D.3) to drain sys-
tem and/or Test Valve (B.15) to
drain the inlet chamber of the Flow
Control Valve (A.1).
C. Disconnect all power sources to
the Firecycle®III Panel prior to
performing any maintenance or
repairs to the detection system
(E.4, E.5), the panel (E.3), sole-
noid valves (E.1, E.2), or any elec-
trical component of the system.
3. Perform all maintenance procedures
recommended in Firecycle®III
Owner’s Manual and Technical Data
Pages for the individual components
of the system that has operated.
A. Replace any piping, detectors
(E.4), or sections of detection ca-
ble (E.5) that have been dam-
aged.
Note: The complete system oper-
ation must be tested after servic-
ing, changing programming, addi-
tion or deletion of system compo-
nents, or after any modification,
repair, or adjustment to system
hardware or wiring. All compo-
nents, circuits, system operation,
or software functions known to be
affected by a change must be
100% tested.
B. Replace any sprinklers and/or
spray nozzles that have been
damaged or exposed to fire condi-
tions.
4. Restore AC power to Firecycle®III
Control Panel (E.3). Ensure that
standby batteries are charged or
charging.
Always connect and turn on AC
power source prior to connecting the
SYSTEM DATA
Firecycle®III 426 b March 15, 2004
FIRECYCLE®III
CYCLING DOUBLE
INTERLOCKED PREACTION
OBSOLETE

standby batteries. Connecting the
standby batteries to the Firecycle®III
Control Panel (E.3) before the AC
power is connected and turned on
may damage the panel.
5. Return the system to service. Refer to
Section E: “PLACING THE SYSTEM
IN SERVICE”.
E. PLACING THE SYSTEM IN
SERVICE AT INITIAL START-UP
(Refer to Figure 1 or 2 on page 426 d.)
Note: Refer to Firecycle®III Owner’s
Manual, and instructions provided in
Technical Data describing the Viking
Flow Control Valve and other system
components.
To Return the System to Service:
1. Verify that the Firecycle®III Control
Panel (E.3), Detector Circuits, and
Detectors have been properly in-
stalled and energized according to in-
structions provided in Viking Techni-
cal Data and the Firecycle®III
Owner’s Manual.
2. Verify that the system has been prop-
erly drained. (When plunger is de-
pressed on drip check (B.7), no water
should flow.) System Drain (D.3)
should be open. Verify that Emer-
gency Release (B.11) is closed.
3. Verify that the System Main Water
Supply Control Valve (D.1) is closed
and the Flow Control Valve (A.1) is
trimmed according to current Viking
Trim Charts and schematic drawings
for the system used.
4. Verify that the system water supply
piping is pressurized up to the closed
System Main Water Supply Control
Valve (D.1) and the priming line is
pressurized up to the closed Priming
Valve (B.1).
5. Restore system air pressure.
6. Open the Priming Valve (B.1).
7. Reset the Firecycle®III Control Panel
(E.3) (open the panel and press “RE-
SET”).
Release Solenoid Valve #1 (E.1)
should close. Flow from Release So-
lenoid Valve #1 (E.1) to Drain Cup
(B.14) should stop.
8. Open the Flow Test Valve (B.15).
8. Partially open the Main Water Supply
Control Valve (D.1).
10. When full flow develops from the
Flow Test Valve (B.15), close the
Flow Test Valve.
a. Verify that there is no flow from
the open Auxiliary Drain (B.6).
11. Close the Auxiliary Drain (B.6).
12. Fully open and secure the Main Wa-
ter Supply Control Valve (D.1).
13. Verify that the Alarm Shut-off Valve
(B.9) is open and that all other
valves are in their normal operating
position.
14. Depress the plunger of Drip Check
(B.7). No water should flow from the
Drip Check when the plunger is
pushed.
F. INSPECTIONS and TESTS
It is imperative that the system be in-
spected and tested on a regular basis.
Refer to INSPECTIONS and TESTS
recommended in current Viking Techni-
cal Data describing individual compo-
nents of the Viking Firecycle®III System.
Where difficulty in performance is expe-
rienced, the manufacturer or their autho-
rized representative shall be contacted if
any field adjustment is to be made.
The frequency of the inspections may
vary due to contaminated or corrosive
water supplies or corrosive atmo-
spheres. For minimum maintenance
and inspection requirements, refer to
the National Fire Protection Associa-
tion's pamphlet that describes care and
maintenance of sprinkler systems. In ad-
dition, the Authority Having Jurisdiction
may have additional maintenance, test-
ing, and inspection requirements that
must be followed.
WARNING: Any system maintenance
that involves placing a control valve or
detection system out of service may
eliminate the fire protection capabilities
of that system. Prior to proceeding, no-
tify all Authorities Having Jurisdiction.
Consideration should be given to em-
ployment of a fire patrol in the affected
areas.
G. MAINTENANCE
NOTICE: The owner is responsible for
maintaining the fire protection system
and devices in proper operating condi-
tion.
Repairs:
To perform maintenance on Detection
cable or Detectors without taking the en-
tire system out of service:
Disable input zone #1. Disabling input
zone #1 disables the detection cable
and detectors, leaving the ability to oper-
ate the Preaction System manually by
use of the Emergency Release. The cy-
cling feature normally provided by the
Firecycle Detectors will be disabled.
Note: When zone #1 alone is disabled, if
it is necessary to activate the system us-
ing the Emergency, do not reset the
Emergency Release. If the Emergency
Release is reset, the system may cycle
off.
If both input zone #1 and input zone #3
are disabled, the system will operate as
a dry. If air pressure in the system is re-
duced, the Flow Control Valve will trip
and water will flow into the sprinkler sys-
tem. The cycling option will be disabled.
To disable input circuits and associated
output circuits for maintenance, refer to
Firecycle®III Owner's Manual and appli-
cable Firecycle®III wiring diagram to de-
termine which output circuits are acti-
vated by each input circuit.
1. Open the Firecycle®III Control Panel.
2. Press and hold TONE SILENCE but-
ton.
3. While holding the TONE SILENCE
button, press the following buttons in
sequence: ALARM SILENCE,
ALARM ACTIVATE, SYSTEM RE-
SET.
A. The zone #1 LED will flash indicat-
ing Zone #1 is selected. To dis-
able zone #1, continue holding
the TONE SILENCE button and
press SYSTEM RESET once
(again). The yellow LED will flash
indicating zone #1 is disabled.
B. To disable subsequent zones,
continue holding the TONE SI-
LENCE button, and press the
ALARM SILENCE button to se-
lect the next zone (the LED will
flash on the zone selected) or
ALARM ACTIVATE button to se-
lect the previous zone. Continue
to holding ALARM SILENCE and
press SYSTEM RESET to disable
a selected zone. When disabled,
the yellow LED will flash indicat-
ing the zone is disabled.
4. When desired zones are disabled, re-
lease the TONE SILENCE button.
The Piezo sounder will sound.
5. To silence the Piezo, press TONE SI-
LENCE.
6. To re-enable a disabled zone, repeat
the procedure.
Note: If any zone has been disabled, the
Trouble Relay will activate and the Sys-
tem Trouble LED will flash. If a zone has
been disabled, an alarm that occurs on
that zone will flash the red zone LED, but
will not sound the Piezo or activate any
output circuit. If both power sources are
removed from the system, all zones will
be re-enabled upon restoration of
power. Disable status is lost.
Refer also to MAINTENANCE IN-
STRUCTIONS provided in current Vi-
king Technical Data describing individ-
ual components of the Viking Firecycle®
III System.
SYSTEM DATA
Firecycle®III 426 c
March 15, 2004
FIRECYCLE®III
CYCLING DOUBLE
INTERLOCKED PREACTION
OBSOLETE

Form No. F_100596
SYSTEM DATA
FIRECYCLE®III
CYCLING DOUBLE
INTERLOCKED PREACTION
Firecycle®III 426 d March 15, 2004
Figure 2
Figure 1
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.)
OBSOLETE