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Firecycle III-OH 432b
ally reset, or both A.C. Power and battery
backup have failed.) The Flow Control
Valve (A.1) re-primes and closes, stop-
ping the flow of water through the system
piping.
If a Firecycle®-OH Detector goes into
alarm, the Firecycle® III Control Panel
(E.3) re-energizes normally closed Release
Solenoid Valve #1 (E.1) open, and the en-
tire cycle repeats.
To return the system to "Normal" condi-
tions, drain the system piping and replace
any sprinklers that may have operated.
Replace any Firecycle®-OH 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 available,
the low air supervisory switch will initiate a
trouble alarm at the Firecycle® III Control
Panel (E.3).
If the detection system is damaged or mal-
functions, 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 operates during this
condition, water will fill the system piping,
activating any connected alarms, and will
discharge from any opened sprinklers at-
tached to the system. The cycling function
of the Firecycle® III-OH 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-OH
System continues to operate on the stand-
by 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 drop
below 16 volt DC prior to the operation
of the system, all alarms will be lost. As
long as air pressure 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 function
of the system will not operate in this con-
dition, and the system must be manually
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
TECHNICAL DATA
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-OH System will not
operate in this condition due to the open
Emergency Release (B.11). All alarms
will operate normally. After operating 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-OH System continues to
provide sprinkler protection even when the
detection system and/or the system piping
have been damaged.
8. INSTALLATION
Refer to current Viking Technical Data de-
scribing individual components of the Viking
Firecycle® III-OH System. The Firecycle®
lll-OH system utilizes many of the same
components as a standard Firecycle® lll
system. A Firecycle® lll valve package and
Firecycle® lll release control panel is re-
quired for a Firecycle® lll-OH system. The
release devices utilized in a Firecycle® lll-
OH system are different than those utilized
in a standard Firecycle lll system. Refer to
Model C Firecycle®-OH detectors for the
installation requirements for a Firecycle®
lll-OH release system. Technical Data de-
scribing 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), indicat-
ing appliances, and releasing devices
must be compatible and approved for
use with the Firecycle® III-OH System.
Refer to appropriate Fire Protection
Equipment Approval Guides and cur-
rent Viking Technical Data describing
individual components of the Viking
Firecycle® III-OH System.
FIRECYCLE® III-OH CYCLING
DOUBLE INTERLOCKED
PREACTION SYSTEM
9. EMERGENCY INSTRUCTIONS
(Refer to Figures 1 & 2.)
Taking System Out of Service:
WARNING: Placing a control valve or de-
tection system out of service may eliminate
the fire protection capabilities of the system.
Prior to proceeding, notify all Authorities
Having Jurisdiction. Consideration should
be given to employment 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 subject-
ed to a fire must be returned to service as
soon as possible. The entire system must
be inspected for damage and repaired or
replaced as necessary.
1.
If
All
System
Components
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 con-
trolled by Firecycle® III Control
Panel (E.1), close the Alarm
Shut-Off Valve (B.9).Note: Electric
Alarms controlled by a pressure
switch installed 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. (This
must be accomplished prior to re-
setting the system)
3. Open the Firecycle® III Control
Panel (E.3) and press "RESET".
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 secured
in their normal operating position.
(Refer to Figures 1 & 2.)
2. If it is necessary to remove the Firecycle®
III-OH System from service:
A. Close the Main Water Supply control
Valve (D.1).
April 20, 2006
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