Viking SIN VK520 Instruction manual

TECHNICAL DATA
March 28, 2013
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
ESFR UPRIGHT SPRINKLER
SIN VK520 (K14.0)
1. DESCRIPTION
Viking Early Suppression Fast Response (ESFR) Upright Sprinkler VK520 is a fast
response fusible element type sprinkler designed for early fire suppression. With a
14.0 (202 metric*) nominal K-Factor and special deflector, this sprinkler produces
large, high-momentum water droplets in a hemispheric pattern below the deflector.
This permits penetration of the fire plume and direct wetting of the burning fuel sur-
face while cooling the atmosphere early in the development of a high-challenge fire.
Viking VK520 ESFR Upright Sprinklers may be used in the protection of ordinary
types of storage. However, they are primarily intended to protect the following types
of storage, which tend to produce severe-challenge fires: palletized and solid pile
storage and single, double, multiple row, and portable open rack storage (no open-
top containers or solid shelves).
Viking ESFR Upright 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*.
* Refer the Approval Chart on page 121c and Design Criteria on page 121d for FM Approval requirements that must be followed.
In addition, some storage arrangements of rolled paper and rubber tire storage may be protected by Viking ESFR Upright Sprinkler
VK520.
2. LISTINGS AND APPROVALS
FM Approved: Class 2008
NYC Approved: MEA 89-92-E, Volume 18
CE Certified: Standard CUAP 11.03/03, EC-certificate of conformity 1725-CPD-H0006, ETA-10/0306
The 10625, VK520, ESFR Upright Sprinkler Assembly conforms to the provision of CUAP 11.03/03 standard.
CUAP 11.03/03 approvals are provided by: FM Approvals Ltd. 1 Windsor Dials, Windsor, Berkshire, UK. SL4 1 RS
Approval Certificate No. issued December 20, 2010.
Refer the Approval Chart on page 121c and Design Criteria on page 121d for FM Approval requirements that must be fol-
lowed.
3. TECHNICAL DATA
Specications:
Minimum Operating Pressure: Refer to NFPA 13 and/or FM Global Loss Prevention Data Sheets.
Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 3/4” (20 mm) NPT
Nominal K-Factor: 14.0 U.S. (202 metric*)
* Metric K-factor measurement shown is when pressure is measured in bar. When pressure is measured in kPa, divide the metric K-factor shown
by 10.0.
Overall Length: 3-3/8” (86 mm)
Deflector Diameter: 2-7/8” (73 mm)
U.S. Patent No. 6,585,054
Material Standards:
Frame Casting: Brass UNS-C84400
Deflector: Copper UNS-C19500 or Phosphor Bronze UNS-C51000
Viking ESFR Upright Sprinkler VK520 deflectors contain a copper alloy, which may easily tarnish after being exposed to air for a period
of time. This natural discoloration is due to the copper content of the deflectors reacting with oxygen and moisture in the atmosphere. It
is not uncommon for tarnish spots to appear on the deflectors within days after manufacture, with further discoloration noted over time. The tarnish
affects the surface of the deflectors and does not indicate a corrosion problem. The performance of Viking ESFR Upright Sprinkler VK520 is not
affected even with severe tarnishing of the deflector.
Lock Nut: Brass UNS-C36000
Seat (pip cap) and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Form No. F_060298
Viking Technical Data may be found on
The Viking Corporation’s Web site at
http://www.vikinggroupinc.com.
The Web site may include a more recent
edition of this Technical Data Page.
Sprinkler 121a
Replaces page 121a-f dated April 1, 2011.
(Replaced CE approval EN12259-1 with CUAP 11.03/03)

TECHNICAL DATA
March 28, 2013
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
ESFR UPRIGHT SPRINKLER
SIN VK520 (K14.0)
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Compression Screw: Stainless Steel UNS-S31603
Trigger and Support: Stainless Steel UNS-S31600
Fusible Element Assembly: Beryllium Nickel, coated with black acrylic paint.
Ejector Spring (for the ordinary temperature rated sprinkler only): 17-7 Stainless Steel
Ordering Information: (Also refer to the current Viking price list.)
Order ESFR Upright Sprinkler VK520 by first adding the appropriate suffix for the sprinkler finish and then the appropriate suffix for
the temperature rating to sprinkler base part number.
Finish Suffix: Brass = A
Temperature Suffix: 165 °F (74 °C) = C, 205 °F (96 °C) = E
For example, sprinkler 10625 with a Brass finish and a 165 °F (74 °C) temperature rating = Part No. 10625AC.
Available Finishes And Temperature Ratings:
Refer to Table 1.
Accessories: (Also refer to the “Sprinkler Accessories” section of the Viking data book.)
Sprinkler Wrench: Part No. 05118CW/B
Sprinkler Cabinet:
Six-head capacity: Part No. 03985A (available since 1977)
4. INSTALLATION
WARNING: Viking sprinklers are manufactured and tested to meet rigid requirements of the approving agency. The sprinklers are
designed to be installed in accordance with recognized installation 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 provisions of governmental codes, ordinances, and stand-
ards 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 will 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 container. Never install
sprinklers that have been dropped or damaged in any way or exposed to temperatures in excess of the maximum ambient tempera-
ture allowed. Such sprinklers should be destroyed immediately. NOTE: Wet pipe systems must be provided with adequate heat.
B. The sprinklers must be installed after the piping is in place to prevent mechanical damage. Before installing, be sure to have the
appropriate sprinkler model and style, with the correct orifice size, temperature rating, and response characteristics. NOTE: No
sprig is required for sprinkler pipe sizes up to and including 3” (76.2 mm) nominal O.D.
C. With the sprinkler contained in the plastic protective 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.
D. 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 the sprinkler wrench to the sprinkler
wrench flats only, while taking care not to damage the sprinkler operating parts.
Sprinkler 121b
TABLE 1: AVAILABLE SPRINKLER TEMPERATURE RATINGS AND FINISHES
Sprinkler Temperature
Classification
Sprinkler Nominal
Temperature Rating1
Maximum Ambient
Ceiling Temperature2
Frame Paint
Color
Ordinary 165 °F (74 °C) 100 °F (38 °C) None
Intermediate 205 °F (96 °C) 150 °F (65 °C) White
Sprinkler Finish: Brass
Footnotes
1The sprinkler 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.

TECHNICAL DATA
March 28, 2013
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
ESFR UPRIGHT SPRINKLER
SIN VK520 (K14.0)
Approval Chart
ESFR Upright Sprinkler VK520
Maximum 175 PSI (12 bar) WWP
Base Part
Number1SIN
NPT Thread Size Nominal
K-Factor Overall Length Listings and Approvals3,4 (Refer also to Design Criteria on page 121d.)
Inches mm U.S. metric2Inches mm cULus FM NYC5VdS LPCB
10625 VK520 3/4” 20 mm 14.0 202 3-3/8 86 -- A1, B1 A1 -- -- A1, B1 --
Approved Temperature Ratings
A - 165 °F (74 °C) B - 205 °F (96 °C)
Approved Finish
1 - Brass
Footnotes
1Base part number shown. For complete part number, refer to the price list.
2Metric K-Factor measurement shown is when pressure is measured in bar. When pressure is measured in kPa, divide the metric K-Factor shown by
10.0.
3This chart shows listings and approvals available at the time of printing. Other approvals may be in process.
4FM Approved as a quick response upright Non-Storage sprinkler and also FM Approved as a quick response upright Storage sprinkler. Refer to
Design Criteria on page 121d.
5Accepted for use, City of New York Department of Buildings, MEA 89-92-E, Vol. 18.
Figure 1:
ESFR Upright Sprinkler Wrench 05118CW/B
Figure 2: ESFR Upright Sprinkler VK520 Dimensions
Sprinkler 121c

TECHNICAL DATA
March 28, 2013
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
ESFR UPRIGHT SPRINKLER
SIN VK520 (K14.0)
DESIGN CRITERIA
(Also refer to the Approval Chart on page 121c.)
FM Approval Requirements:
1. Sprinkler VK520 is FM Approved as a quick response upright Storage sprinkler as indicated in the FM Approval Guide.
• For specific application and installation requirements, reference the latest applicable FM Loss Prevention Data Sheets (including Data Sheets
2-0 and 8-9).
2. Sprinkler VK520 is also FM Approved as a quick response upright Non-Storage sprinkler as indicated in the FM Approval Guide.
• For specific application and installation requirements, reference the latest applicable FM Loss Prevention Data Sheets (including Data Sheet 2-0).
FM Global Loss Prevention Data Sheets contain guidelines relating to, but not limited to: minimum water supply requirements, hydraulic design, ceiling
slope and obstructions, minimum and maximum allowable spacing, and deflector distance below the ceiling.
NOTE: The FM installation guidelines may differ from NFPA criteria.
IMPORTANT: Always refer to Bulletin Form No. F_091699 - Care and Handling of Sprinklers. Viking ESFR Upright
Sprinklers are to be installed in accordance with the latest edition of Viking technical data, the latest applicable
FM Global Loss Prevention Data Sheets, including 2-0 and 8-9, the latest applicable standards of VdS, NFPA, and
any other Authorities Having Jurisdiction, and also with provisions of governmental codes, ordinances, and stan-
dards whenever applicable.
• DO NOT use any other type of wrench, as this could damage the unit.
• DO NOT use the sprinkler deflector or fusible element to start or thread the sprinkler into a fitting.
• DO NOT exceed 50 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.
E. After installation, the entire sprinkler system must be tested. The test must be conducted to comply with the Installation
Standards. Make sure the sprinkler has been properly tightened. If a thread leak occurs, normally the unit must be removed, new
pipe-joint compound or tape applied, 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 damaged units, using the special sprinkler wrench only.
F. After installation and testing and repairing of all leaks, remove the protective caps from the sprinklers. 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 dislodging or damaging sprinkler ejector spring and fusible element. THE CAPS MUST BE
REMOVED FROM SPRINKLERS BEFORE PLACING THE SYSTEM IN SERVICE!
G. System design must be based on ESFR design guidelines described in applicable FM Global Loss Prevention Data Sheets,
the National Fire Protection Association, and the Authorities Having Jurisdiction. NOTE: Viking recommends installing one
style of sprinklers (either pendent or upright) throughout ESFR systems. However, provided the fusible elements
are installed within the distance below the ceiling allowed by the installation standards, and when acceptable to the
Authority Having Jurisdiction, Viking considers the practice of mixing upright and pendent ESFR sprinklers to be ac-
ceptable.
5. OPERATION
During fire conditions, the heat-sensitive fusible element assembly disengages, releasing the seat and spring assemblies to open
the waterway. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern to suppress
the fire.
6. INSPECTIONS, TESTS AND MAINTENANCE
NOTICE: The owner is responsible for maintaining the fire protection system and devices in proper operating condition. For
minimum maintenance and inspection requirements, refer to 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. The 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 supplies, and activity around the device.
Sprinkler 121d

TECHNICAL DATA
March 28, 2013
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
ESFR UPRIGHT SPRINKLER
SIN VK520 (K14.0)
Sprinkler 121e
B. Sprinklers that have been painted or mechanically damaged must be replaced immediately. Sprinklers showing signs of cor-
rosion shall be tested and/or replaced immediately as required. Installation standards require sprinklers to be tested and, if
necessary, replaced after a specified term of service. For Viking ESFR Upright Sprinklers, 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 required.
Sprinklers that have operated cannot be reassembled or reused, but must be replaced. When replacing sprinklers, use only
new sprinklers.
C. The sprinkler discharge pattern is critical for proper fire protection. Therefore, nothing should be hung from, attached to, or
otherwise obstruct the discharge pattern. All obstructions must be immediately removed or, if necessary, additional sprinklers
installed.
D. When replacing existing sprinklers, the system must be removed from service. Refer to the appropriate system description and/
or valve instructions. 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 pressure on the piping.
2. Using the special sprinkler wrench, remove the old sprinkler and install the new unit. Care must be taken to ensure that the
replacement sprinkler is the proper model and style, with the correct orifice size, temperature rating, and response charac-
teristics. A fully stocked spare sprinkler cabinet should be provided for this purpose.
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 operated, should be replaced. Refer to the Authorities Having Jurisdiction for minimum replacement
requirements.
7. AVAILABILITY
The Viking Model VK520 Sprinkler is available through a network of domestic and international distributors. See The Viking
Corporation web site for the closest distributor or contact The Viking Corporation.
8. GUARANTEE
For details of warranty, refer to Viking’s current list price schedule or contact Viking directly.

Form No. F_060298
THIS PAGE
INTENTIONALLY
LEFT BLANK
Replaces page 121a-f dated April 1, 2011.
(Replaced CE approval EN12259-1 with CUAP 11.03/03)