2 UL/FM preaction system User Manual

TABLE OF CONTENTS
A. EMERGENCY INSTRUCTIONS 3

B. GENERAL DESCRIPTION 4

C. FUNCTIONING 4

D. INSTALLATION 4

E. Commissioning 5

F. INSPECTION AND TESTING 5

PREACTION SYSTEM SCHEME

WITH SIMPLE INTERLOCKING (NFPA 13) 6
PNEUMATIC DISCHARGE

PREACTION SYSTEM SCHEME

WITH SIMPLE INTERLOCKING (NFPA 13) 7
ELECTRICALSHOOT

THIS DOCUMENT IS ONLY A TRANSLATION.

ITS COMPLETE ACCURACY IS NOT GUARANTEED.
IN CASE OF ANY DOUBT, CONSULT THE DOCUMENT
ORIGINAL IN ENGLISH.

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User Manual UL/FM pre-action system 3

A. EMERGENCY INSTRUCTIONS (after a fire)

1. Ensure that the fire has been extinguished. Inspect the area for
check that there are no hidden hot spots. Maintain vigilance until the
the systems are newly operational.
Note: The alarm can be silenced by closing the valve (B.9)
2. Close the air intake valve (G.4), the priming valve (B.1), and the valve of
sectioning (D1). A person must remain on guard near the valve
to open it in case of emergency.
3. Open the main drain valves (D.3), and auxiliary (B.6) and the valve at the point of
test. When the system has been completely drained, close the valves of
drainage.
4. Replace the activated sprinklers, both from the extinguishing system and
the fixed temperature detectors, for others of the same type and the same
temperature. Review all the sprinklers in the area affected by the fire to
detect the presence of possible damage and, in case it has occurred, replace
loses damaged elements.
5. Return to operational control point:
! For the hydraulic firing system, open the priming valve until
the pressure in the control line should be equal to that of the supply. Maintain
open the defective valve.
! In the pneumatic firing system, fill the pilot line with air.
compressed until it reaches a pressure close to 2 bar. Open the valve
of priming (B.1), until the pressure in the upper chamber of the valve
flood (A), just like that of the food supply. Keep it open and sealed.
valve decayed.
! In the electric firing system, pressing the reset button on the
Fire Central (F.3). Open the priming valve (B.1) until the
pressure in the upper chamber of the deluge valve (A) shall be equal to that of the
Food. Keep the drain valve open and sealed.
6. Fill the system with compressed air until the pressure indicated by the
EasyRiser valve manometer (D.2), should be close to 1.4 bar.
7. Open the drain valve (B.15).
8. Partially open the cutoff valve (D.1).
9. Close the drain valve (B.15) when water starts to flow out of it. Verify.
what comes out through the auxiliary drainage valve (B.6), and close the valve.
10. Open the shut-off valve completely.
11. Check that the alarm shut-off valve (B.9) is open, and that the rest of the
valves are in their normal working position.
12. Open the alarm test valve (B.5). When the alarm sounds, close it.
test valve (B.5) and seal it.
13. The fire may have caused damage to the pipes and/or supports. Carry out
a careful inspection of the part of the facility affected by the fire and
repair the existing damages.
For more complete information, consult the technical sheets for each of the
Viking components.

Note: the references in parentheses refer to the schemes on pages 6 and 7.

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4 UL/FM Pre-action System User Manual

B. GENERAL DESCRIPTION
The Viking pre-action systems use a When the deluge valve opens, the end
deluge valve (A.1) along with a network of the PORV (B.10) sensor detects an increase in
pressurized sprinklers with air or gas. The pressure the pressure and allows the water from the chamber to
it is used to maintain supervision earthen escape towards the sinkhole, preventing from
permanent network, alerting to possible leaks in such a way that a possible valve closing
due to malfunction or breakage of sprinklers. In that case, it solenoid allowed the closing of the valve again
produce a low pressure alarm, but not of the flood. The only way to close the valve of
causes the opening of the valve, nor the discharge The flood is cutting off the power by closing the valve.
water accident. decorte.
Systems with electric firing use Functional anomalies
electric detectors (F.4), a control panel In the event that a sprinkler breaks
(F.3), and a solenoid valve (F.1) to open the accidentally, or leaks occur in the network, the
floodgate supervision pressure switch (E.3) will cause a
If a fire occurs, the detectors activate the alarm indicating the drop in pressure
control panel alarm, which in turn commands the pneumatic, but it will not open the deluge valve.
opening of the solenoid valve. This drains the If the detection system is triggered by mistake, the
pre-chamber of the deluge valve, the deluge valve will open, but the sprinklers
allowing its opening and the filling of the network of closed will prevent the water from leaving the
sprayers with water. In this way, the water will be pipes. The alarm devices, pressure switch
available in the sprinklers to put out the fire (C.1) hydromechanical (C.2), will be activated.
sooner or later it will happen just like any of them.
Operation manual
Pre-action systems with simple interlock
The emergency shot (B.11) allows the
are especially useful in installations in the
manual opening of the deluge valve, for
that there is a risk of damage occurring in
those cases in which the system fails
the sprinkler system, whether by temperature or by
detection. The water will flow to the sprinklers
blows. They are used instead of piping systems
activating the alarm devices (C.1 and C.2).
dry when the size of the installation exceeds the
allowed by current regulations, or when
wants to avoid the risk of accidental downloads
of water. D. INSTALLATION
The Viking pre-action systems are Carefully follow the assembly instructions
approved by FM as long as they are installed from of the teams that make up the system.
in accordance with the manufacturer's instructions and with
Important:
the specific components included in the trim
vikingdisassembly. The recommended pressure to monitor the network
derociadoreses20psi(138kPa)
C. OPERATION 2. Adjust the alarm pressure switch (E.3) to 15
psi(103kPa)
In the normal operating position, the water
3. The pressure switch must be connected in such a way
from the power supply is introduced into the chamber
from the feed line, through a that triggers an alarm when the pressure drops
ball valve (B.1), normally open, a filter until the value of the value is plummeting.
(B.2), a restriction orifice (B.3), and a valve 4. The water pressure switch (C.1) must activate a
anti-return (B.4). The pressure generated in the alarm when the pressure rises between 4 and 8 psi.
upper chamber forces the flap to close, (27y55kPa)
keeping the valve closed, and the network of Pneumatic supply.
dry sprinklers.
The supply must be sized so that
In case of fire the system remains pressurized for a time
If a fire occurs, the detection system maximum of 30 minutes.
an alarm is triggered on the panel The pressure maintenance device
control, and the solenoid valve opens, allowing (G.6) regulate the flow and pressure in the network.
release the pressure of the priming chamber. The
the restriction orifice prevents it from being replenished The supervisory pressure must be regulated.
within the recommended limits. Values
pressure, and the flap rises allowing that
water flows towards the sprinklers. At that moment
different ones can affect the functioning and
the pressure switch (C.1) and the bell are activated system performance in case of fire.
hydromechanics (C.2), indicating the flow of water The supply flow must be controlled
towards the sprinklers. From that moment on, so so that the air that escapes due to the
as soon as a sprinkler breaks, the water will the break of a sprinkler cannot be replaced by it
You will pour over the fire. pneumatic feeding system.

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User Manual UL/FM preaction system 5

N
IF
.SPECTO
INANDTESTS
Compressors mounted on the collector of It is mandatory to inspect and test the system.
exit periodically as indicated on the sheets
In small installations, a can be installed techniques corresponding to the system used.
compressor without a tank, but in this case I do not know The frequency of tests and inspections
must install dehydrator or system of It can vary depending on the quality of the water.
pressure maintenance used, of the corrosive nature of the environment or others
1. If the dehydrator is not installed, check that the circumstances.
installation is located in a dry place, and F.1Lowpressurealarmtest
that there is no risk of freezing in the network It si recommended to cary out thsi test
of sprinklers. quarterly
2. If a pressure regulator is not installed, 1. To prevent the deluge valve from opening and
ensure that it is regulated appropriately if the pipes flood, do not activate the system
fear the operating pressure switch of the electric during this test. For more
compressor, and that an opening is installed in a security, close the shut-off valve (D.1)
restriction.
2. Fully open the valve at the point of
3. Not installing the accelerator.
test and drainage to simulate the break of a
4. Verify that the current regulations are being complied with. sprinkler.
It is recommended to install a test and drainage point. 3. Verify that a low alarm is triggered
at the most unfavorable point of the network pressure within a reasonable time, and that
sprinklers, and with a hole equal to the smallest one This alarm remains constant.
of the installed sprinklers. At this point, it 4. Close the test and drainage valve.
It can simulate the breakage of a sprinkler and verify.
that the pneumatic supply cannot replenish the 5. Restore the pneumatic pressure
escaping air, and an alarm is triggered 6. Rearm control panel. The alarm will cease.
pressure drop. See paragraph F. Inspection and 7. Reactivate the system
tests. following the steps indicated in E.
F.2Delugevalvetestfire
E. COMMISSIONING It is recommended to perform this test annually,
Drain the system and check that there is no water with good weather.
in the pipes. The drainage valves Caution: When conducting this test, the
principal (D.3) and auxiliary (B.6) must be present the deluge valve opens, and the water flows out through the
open, and the firing valves of open sprinklers or nozzles. Take them
emergency (B.11), and priming (B.1) are necessary precautions to avoid damage.
closed. Fully open the emergency valve
2. Close the main drain valve (D.3) to activate the solenoid valve through the
3. Apply air or gas to the network until reaching the control panel
work pressure. 2. Verify that the deluge valve opens.
4. Open the priming valve (B.1) and check that the electromechanical alarm sounds, the
the manometer (B.12) of the priming chamber electric alarm, and the water reaches the
indicates the same pressure as the supply sprinklers nozzles
general. 3. Open the test and drain valve and observe that
5. Rearrange the control panel. water flows in sufficient flow and pressure.
6. Open the drain valve (B.15). 4. When the tests are finished, follow the
7. Partially open the shut-off valve (D.1). steps indicated in D.
5. Bring the system back into service according to
8. Close the drain valve (B.15) when it is indicated in E.
water started to come out of it.. Check that it does not
water comes out through the drainage valve
auxiliary(B.6), and close the valve. For more information about technical details,
9. Fully open the shutoff valve. installation, maintenance and testing, see the
technical sheets of the system components of
10. Check that the alarm shut-off valve (B.9) specific flood
it is open, and that the rest of the valves
they are in their normal work situation.
Press the button of the drain valve
automatic (B.7), checking that no water comes out
for her.

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 6 UL/FM preaction system User Manual

SIMPLE INTERLOCK PREACTION SYSTEM

Pneumatic shot

SYSTEM COMPONENTS
A. Valve.
A.1 Deluge Valve.
B. Conventional Trim of the Flood Valve.
B.1 Priming Valve (Normally Open).
B.2 Filter.
B.3 Restriction of 1/8".
B.4 Check valve with spring.
B.5 Alarm test valve (Normally closed).
B.6 Drain auxiliary valve (Normally closed).
F.6 B.7 Automatic relief valve.
F.5
F.7 B.8 Backflow valve (with spring).
B.9 Alarm bypass valve (Normally open).
F.8
B.10 Constant pressure relief valve (PORV).
B.11 Emergency dispatch.
F.9 B.12 Water manometer and its valve, for the chamber of
drunk.
B.13 Water pressure gauge and valve for supply
principal.
B.14 Drain funnel.
B.15 Test valve
C. Detection and alarm devices.
C.1 Pressure switch.
C.2 Water motor (Requires a filter).
F.2 C.3 Filter.
F.4 C.4 Electric alarm bell.
F.3
D. Rising Collector.
D.1 Water supply control valve.
F.1 D.2 EasyRiser anti-return valve
return with rubber seat.
D.3 Main drainage of the sprinkler system.
D.4 90º elbow.
E. Air supply supervisor.
E.1 Water manometer and its pressure valve
system.
E.2 Check valve.
E.3 Pressure Switch.
F. Firing System.
F.1Pneumaticactuator.
F.2 Manometer.
F.3Orifcerestriction.
F.4PressureSwitch.
F.5-F.7Pneumaticdetectionsystem.
G. Air Supply.
G.1 Air compressor.
G.2 Pressure switch.
G.3 Air check valve.
G.4 Ball valve.
G.5 Air desiccator.
G.6 Air supply control.

The dashed lines indicate the required pipes but not included in the system.
The dotted lines indicate the wires of the electric detection system but not included in the system.
* The Viking flood trim includes numbers from B.1 to B.15 and also the precise threaded joints for assembly. The sets of
accessories for the conventional rain trim include B.2 to B.5, from B.7 to B.11, and B.14.

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 User Manual UL/FM preaction system 7

SIMPLE INTERLOCK PREACTION SYSTEM

ELECTRIC SHOT

SYSTEM COMPONENTS
A. Valve.
A.1 Deluge Valve.
B. Conventional trim of the flood valve.
B.1 Priming Valve (Normally Open).
B.2 Filter.
B.3 Restriction of 1/8".
B.4 Spring-loaded check valve.
F.4 B.5 Alarm test valve (Normally closed).
B.6 Auxiliary drain valve (Normally closed).
B.7 Automatic relief valve.
B.8 Check valve (with spring).
B.9 Alarm stop valve (Normally open).
B.10 Constant pressure relief valve (PORV).
B.11 Emergency outbreak.
B.12 Water pressure gauge and its valve, for the chamber of
F.3
fed.
B.13 Water pressure gauge and valve, for the supply
principal.
B.14 Drain funnel.
B.15 Test valve.
C. Detection and alarm devices.
C.1 Pressure switch.
C.2 Water motor (Requires a filter).
C.3 Filter.
C.4 Electric alarm bell.
D. Rising collector.
D.1 Control valve of water supply.
D.2 EasyRiser anti-return valve
return with a rubber seat.
D.3 Main drainage of the sprinkler system.
D.4 90º Bend.
E. Air supply supervisor.
E.1 Water manometer and its pressure valve
system.
E.2 Check valve.
E.3 Pressure switch.
F. Firing system.
F.1Solenoidvalve(Normalyclosed).
F.2Electrictriggertrim.
F.3 FireCentral set up for the management of a
preaction system.
F.4Ee
l ctrci detectoi nsystem.
G. Air supply.
G.1 Air compressor.
G.2 Pressure switch.
G.3 Air check valve.
G.4 Drain valve.
G.5 Air desiccator.
G.6 Control of air supply.

The dashed lines indicate the required pipes but are not included in the system.
The dashed lines indicate the cables of the electric detection system but not included in the system.
* The Viking deluge Trim includes numbers from B.1 to B.15 and also the precise threaded connections for assembly. The sets of
accessories for the conventional drainage trim include from B.2 to B.5, from B.7 to B.11, and B.14.

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The Viking Corporation

210 N. Industrial Park Road
Hastings, Michigan USA 49508
Tel.: +1/616 945-9501
+1/616 945-9599
www.vikingcorp.com

Viking S.A.
Haneboesch Industrial Zone
L-4562 Differdange/Niedercorn
LUXEMBOURG
Tel.: +352/58 37 37-1
Fax: +352/58 37 36

Viking Iberica
Viking Sprinkler S.A.
Cantabrian Sea, 10
San Fernando I Industrial Park
San Fernando de Henares
E-28830 Madrid
Tel.: +34/91 677 83 52
+34/91 677 84 98
vikinges@arrakis.es
www.viking.arrakis.es