Viking VK520 Instruction manual

ESFR UPRIGHT SPRINKLER
SIN VK520 (K = 14.0)
January 20, 2006
TECHNICAL DATA
and single, double, multiple row, and
portable open rack storage (no open-top
containers or solid shelves).
Viking ESFR Upright SIN VK520
Sprinklers provide protection of most
common storage materials up to 30 ft
(9,1 m) high in buildings up to 35 ft (10,7
m) high, including:
Encapsulated or unencapsulated
Class I, II, III, and IV commodities*.
Cartoned unexpanded plastics*.
Cartoned expanded plastics*.
In addition, some storage arrangements
of rolled paper and rubber tire stor-
age may be protected by Viking ESFR
Upright Sprinkler SIN VK520*.
4. TECHNICAL INFORMATION
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Note: Units of measure in parentheses may be approximations.
Form No. F_060298 Replaces page 121 a-d, dated May 28, 2004 (updated
design requirements and re-formatted the page).
Sprinkler 121 a
ESFR Upright Sprinkler SIN VK520
(Shown with the ordinary
temperature rated element.)
1. PRODUCT NAME
VikingEarlySuppressionFastResponse
Upright Sprinkler SIN VK520† (K=14.0)
Sprinkler Base Part Number 10625
U.S. Patent No. 6,585,054
Available since 2000.
† The Sprinkler Identification Number (SIN) is
stamped on the sprinkler deflector.
2. MANUFACTURER
THE VIKING CORPORATION
210 N. Industrial Park Road
Hastings, Michigan 49058 USA
Telephone: [phone]
[phone]
Fax: [phone]
e-mail: [email protected]
3. PRODUCT DESCRIPTION
Viking Early Suppression Fast Response
(ESFR) Upright Sprinkler SIN VK520 is a
fast response fusible element type sprin-
kler designed for early fire suppression.
With a 14.0 nominal K-Factor and spe-
cial deflector, this sprinkler produces
large, high-momentum water droplets in
a hemispheric pattern below the deflec-
tor. This permits penetration of the fire
plume and direct wetting of the burning
fuel surface while cooling the atmo-
sphere early in the development of a
high-challenge fire.
ESFR Upright Sprinkler SIN VK520 may
be used in the protection of ordinary
types of storage. However, it is primar-
ily intended to protect types of storage
that tend to produce severe challenge
fires: palletized and solid pile storage
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APPROVAL: FM Approved and ac-
cepted for use, City of New York
Department of Buildings—refer to
the chart on page 121 b.
Rated to 175 psi (1 207 kPa) water
working pressure.
Factory tested hydrostatically to 500 psi
(3 447 kPa).
K-Factor: Nominal 14.0 U.S. (20,2 met-
ric, for use when pressure is meas-
ured in kPa).
Thread Size: 3/4” (20 mm) NPT
Deflector Diameter: 2-7/8” (73,0 mm)
Overall Length: 3-3/8” (85,7 mm)
SPRINKLER MATERIALS
Frame: Brass Casting UNS-C84400
Seat (pip cap) and Insert Assembly:
Copper UNS-C11000 and Stainless
Steel UNS-S30400
Belleville Spring Sealing Assembly:
Nickel Alloy, coated on both sides
with Teflon Tape
Screw: Stainless Steel UNS-S31603
Deflector: Copper UNS-C19500 or
UNS-C51000
Lock-Nut: Brass UNS-C36000
Trigger and Support: Stainless Steel
UNS-S31600
Fusible Element Assembly: Beryllium
Nickel, coated with black acrylic
paint
Ejector Spring (for the ordinary tem-
perature rated sprinkler only): 17-7
Stainless Steel
AVAILABLE FINISH: Brass
ACCESSORIES
Sprinkler Wrench Part No. 05118CW/B
Available since 1981.
Sprinkler Cabinet Part No. 03985A
Capacity: six (6) sprinklers
Length: 12-5/8” (321 mm)
Height: 9-1/8” (232 mm)
Depth: 4-1/8” (105 mm)
Finish: High Gloss Red Enamel
Available since 1977.
5. AVAILABILITY & SERVICE
Viking products are available through
a network of domestic, Canadian, and
international distributors. See the Viking
Corp. Web site for your closest distribu-
tor or contact The Viking Corporation.
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* REFER TO THE LATEST
APPLICABLE FM LOSS
PREVENTION DATA SHEETS,
INCLUDING 2-2 AND 8-9, AND
THE LATEST NFPA STANDARDS.
Viking ESFR Upright Sprinkler
SIN VK520 has special FM Approv-
al for use with the following types
of obstructed construction:
May be installed above continuous,
ungrouped obstructions up to and
including 4” (100 mm) wide.
Definition of “UNGROUPED”: For
pipes, conduits, or groups of pipes
and conduit to be considered indi-
vidual or ungrouped, they must be
separated from the closest adjacent
pipe, conduit, cable tray, etc., by a
minimum of 6 times the width of the
obstruction. For example, a 1” (25
mm) diameter conduit would need to
be a minimum of 6” (150 mm) from
the nearest pipe or conduit to be
considered individual or ungrouped.
A cable tray 4” (100 mm) wide would
need to be a minimum of 24” (600
mm) from the nearest pipe, conduit,
cable tray, etc., to be considered indi-
vidual or ungrouped.
NOTE: No sprig required for sprin-
kler pipe sizes up to and including
3” (76,2 mm) nominal I.D.

ESFR UPRIGHT SPRINKLER
SIN VK520 (K = 14.0)
January 20, 2006
TECHNICAL DATA
Sprinkler 121 b
Sprinkler Temperature
Classification Sprinkler Nominal Temperature Rating1Max. Ambient Ceiling Temperature2Frame Paint Color
Ordinary 165 °F (74 °C) 100 °F (38 °C) None
Intermediate 205 °F (96 °C) 150 °F (65 °C) White
Upright
Deflector NPT Thread Size Sprinkler
Part No.3
Nominal
K-Factor Maximum Pressure
(PSIG)
Approvals5,6
Fast Response
Fusible
Element
Inches mm U.S. metric4FM NYC7
3/4 20 10625 14.0 20,2 175 psi A1, B1 A1
Approved Sprinkler Temperature Ratings
A - 165 °F (74 °C) B - 205 °F (96 °C)
Approved Finish
1 - Brass
Footnotes
1The temperature rating is stamped on the deflector.
2Based on NFPA-13. Other limits may apply, depending on fire loading, sprinkler location,
and other requirements of the Authority Having Jurisdiction. Refer to specific installation
standards.
3Base part number shown. For complete part number, refer to the price list.
4Metric K-Factor shown is for use when pressure is measured in kPa. When pressure is
measured in BAR, multiply the metric K-Factor shown by 10.0.
5This table shows listings and approvals available at the time of printing. Other approvals
may be in process.
6Refer to the latest Factory Mutual Loss Prevention Data Sheets and standards of the
National Fire Protection Association.
7Accepted for use, City of New York Department of Buildings, MEA 89-92-E, Vol. 18.
Installation Guidelines
Maximum Roof or Ceiling Slope: 2 in 12 (167 mm/m or 9.5 degrees).
Note: If the ceiling is beam and girder or panel construction, locate sprinklers in the bays
rather than under the beams.
Sprinkler Position: Approved for use only in the upright position in wet systems: FM Global
Loss Prevention Data Sheet 2-2 provides the following positioning requirement: Install
K14.0 ESFR sprinklers with the center line of the thermal sensing element located a maxi-
mum of 13” (330 mm) and a minimum of 4” (102 mm) below the ceiling. NOTE: NFPA
13 indicates the following for ESFR upright sprinklers having a 14.0 nominal K-Factor:
Position the deflector a maximum of 12” (305 mm) and a minimum of 3” (76 mm) below
the ceiling.
Deflector Distance from Walls: At least 4” (102 mm) from walls, and no more than one-half
the allowable distance permitted between sprinklers.
Clearance from Deflector to Top of Storage: At least 36” (914 mm).
Distance Between Sprinklers: The maximum area of coverage allowed per sprinkler is 100 ft2
(9,3 m2)**. The minimum area of coverage allowed per sprinkler is 64 ft2(5,8 m2) per FM
Global Loss Prevention Data Sheet 2-2, and 80 ft2(7,4 m2) per NFPA 13.
For buildings over 30 ft (9,1 m) high, spacing between sprinklers and/or branch lines
must be from 8 to 10 ft (2,4 to 3,1 m)**.
For building heights up to 30 ft (9,1 m), the spacing allowed between sprinklers and/or
branch lines is 8 to 12 ft (2,4 to 3,7 m), provided the area covered per sprinkler does not
exceed the maximum 100 ft2(9,3 m2) allowed**.
**Refer to the Installation Standards for permissible deviations from the maximum sprinkler
spacing rules above, to eliminate obstructions created by trusses and bar joists when using
ESFR sprinklers.
WARNING: Viking ESFR Upright Sprinklers are to be installed in accordance with current
Viking technical data, the latest applicable Factory Mutual Loss Prevention Data Sheets,
including 2-2 and 8-9, the latest standards of the National Fire Protection Association and
any other Authorities Having Jurisdiction, and also with provisions of governmental codes,
ordinances, and standards whenever applicable.
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Approval Chart
Viking ESFR Upright Sprinkler SIN VK520
Figure 2
Ordinary Temperature Rated Sprinkler
NOTE: The sprinkler is contained
in a plastic cap for protection
during shipping and installation.
Carefully remove the cap from the
sprinkler AFTER installation.
Intermediate Temperature Rated Sprinkler
Viking ESFR Upright SIN VK520
Sprinkler Wrench: Part No. 05118CW/B
Figure 1
(Dimensions are approximate.)

ESFR UPRIGHT SPRINKLER
SIN VK520 (K = 14.0)
January 20, 2006
TECHNICAL DATA
Sprinkler 121 c
6. GUARANTEES
For details of warranty, refer to Viking’s
current list price schedule or contact The
Viking Corporation directly.
7. DESIGN & INSTALLATION
(Also refer to the chart on page 121 b.)
WARNING: Viking sprinklers are manu-
factured and tested to meet rigid require-
ments of the approving agency. The
sprinklers are designed to be installed
in accordance with recognized instal-
lation standards. System design must
be based on ESFR design guidelines
described in the latest edition of Viking
technical data, applicable FM Global
Loss Prevention Data Sheets, the latest
NFPA Standards, the Authorities Having
Jurisdiction, and also with the provi-
sions of governmental codes, ordinanc-
es, and standards whenever applicable.
Deviation from the standards or any
alteration to the sprinkler after it leaves
the factory including, but not limited to:
painting, plating, coating or modification,
may render the sprinkler inoperative and
would automatically nullify the approval
and any guarantee made by The Viking
Corporation.
A. Sprinklers must be handled with care.
They must be stored in a cool, dry
place in their original shipping con-
tainer. Never install sprinklers that
have been dropped or damaged in
any way or exposed to temperatures
in excess of the maximum ambient
temperature allowed. Such sprinklers
should be destroyed immediately.
NOTE: Wet-pipe systems must be
provided with adequate heat.
B. Viking recommends installing one
style of sprinklers (either pendent
or upright) throughout ESFR sys-
tems. However, provided the fusi-
ble elements are installed within
the distance below the ceiling al-
lowed by the installation stand-
ards, and when acceptable to the
Authority Having Jurisdiction,
Viking considers the practice of
mixing upright and pendent ESFR
sprinklers to be acceptable.
C. Sprinklers must be installed after
the piping is in place at the ceil-
ing to prevent mechanical damage.
NOTE: No sprig is required for
sprinkler pipe sizes up to and in-
cluding 3” (76,2 mm) nominal I.D.
Before installing, be sure to have the
appropriate sprinkler model and style,
with the correct orifice size, tempera-
ture rating, and response character-
istics.
D. With the sprinkler contained in the
protective plastic cap, apply a small
amount of pipe-joint compound or
tape to the male threads only, while
taking care not to allow a build-up of
compound in the sprinkler orifice.
E. Use ONLY sprinkler wrench
05118CW/B (shown in Figure 1) for
installing ESFR Sprinkler VK520!
With the sprinkler contained in the
protective cap, install the sprinkler
onto the piping by applying sprinkler
wrench 05118CW/B to the sprinkler
wrench flats only, while taking care
not to damage the sprinkler operat-
ing parts.
DO NOT use any other wrench, as
this could damage the unit.
DO NOT use the sprinkler deflec-
tor or operating element to start or
thread the sprinkler into a fitting.
DO NOT exceed50 ft. lbs. of torque
(hand tight, plus approximately two
full turns with the wrench) to install
these sprinklers. Higher levels of
torque may distort the sprinkler
inlet with consequent leakage or
impairment of the sprinkler.
F. After installation, the entire sprin-
kler system must be tested. The
test must be conducted to com-
ply with the Installation Standards.
Makesurethesprinklerhasbeenprop-
erly tightened. If a thread leak occurs,
normally the unit must be removed,
new pipe-joint compound or tape ap-
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plied, and then reinstalled. This is due
to the fact that when the joint seal
is damaged, the sealing compound
or tape is washed out of the joint.
Immediately replace any dam-
aged units, using sprinkler wrench
05118CW/B only.
G. After installation and testing and
repairing of all leaks, remove the
protective caps from the sprin-
klers. Do NOT use any type of tool
to remove the cap. Remove the cap
by hand: turn it slightly and pull it
off the sprinkler. When removing
caps, use care to prevent dislodg-
ing or damaging sprinkler ejector
spring and fusible element. THE
CAPS MUST BE REMOVED FROM
SPRINKLERS BEFORE PLACING
THE SYSTEM IN SERVICE!
8. MAINTENANCE
NOTICE: The owner is responsible
for maintaining the fire protection sys-
tem and devices in proper operating
condition. For minimum maintenance
and inspection requirements, refer to
this document and the NFPA standard
that describes care and maintenance
of sprinkler systems. In addition, the
Authorities Having Jurisdiction may
have additional maintenance, testing,
and inspection requirements that must
be followed.
A. Sprinklers must be inspected on a
regular basis for corrosion, mechanical
damage, obstructions, paint, etc. The
frequency of inspections may vary due
to corrosive atmosphere, water sup-
plies, and activity around the device.
B. Sprinklers that have been painted
or mechanically damaged must be
replaced immediately. Sprinklers
showing signs of corrosion shall be
tested and/or replaced immediately
as required. Refer to the Installation
Standards (e.g., NFPA 25) and the
Authorities Having Jurisdiction for the
specified period of time after which
testing and/or replacement is re-
quired. Sprinklers that have operated
cannot be reassembled or reused,
butmust be replaced. Whenreplacing
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.

ESFR UPRIGHT SPRINKLER
SIN VK520 (K = 14.0)
January 20, 2006
TECHNICAL DATA
Replaces page 121 a-d, dated May 28, 2004 (updated
design requirements and re-formatted the page). Form No. F_060298
Sprinkler 121 d
sprinklers, use only new sprinklers of
the proper model and style, with the
correct orifice size, temperature rat-
ing, and response characteristics. A
fully stocked spare sprinkler cabinet
should be provided for this purpose,
as required by NFPA 13.
C. The sprinkler discharge pattern is
critical for proper fire protection.
Therefore, nothing should be hung
from, attached to, or otherwise ob-
struct the discharge pattern. Refer
to obstruction criteria in applicable
Installation Standards.
D. When replacing existing sprinklers,
the system must be removed from
service. Refer to the appropriate sys-
tem description and/or valve instruc-
tions. Prior to removing the system
from service, notify all Authorities
Having Jurisdiction. Consideration
should be given to employment of a
fire patrol in the affected area.
1. Remove the system from service,
drain all water, and relieve all pres-
sure on the piping.
2. Using the special sprinkler wrench,
remove the old sprinkler and install
the new unit.
3. Place the system back in service
and secure all valves. Check the
replaced sprinklers and repair all
leaks.
E. Sprinkler systems that have been
subject 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. Sprinklers that have
been exposed to corrosive products
of combustion, but have not oper-
ated, should be replaced. Refer to
the Authorities Having Jurisdiction for
minimum replacement requirements.