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The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
Visit the Viking website for the latest edition of this technical data page: www.vikinggroupinc.com
4. INSTALLATION
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 latest standards of (VdS) Schadenverhütung, the Authorities Having Jurisdiction,
and also with the provisions of governmental codes, ordinances, 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, coat-
ing, 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. 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.
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 10285W/B or 13635W/B (shown in Figure 1) for installing ESFR Sprinkler VK500! 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.
• 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
latest standards of (VdS) Schadenverhütung, the National Fire Protection Association, and the Authorities Having Jurisdiction.
All requirements of recognized sprinkler system design standards apply to systems utilizing Viking ESFR Pendent Sprinklers.
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 acceptable.
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.
Form No. F_060198
22.04.13
TECHNICAL DATA
Rev 22.1
WARNING
Page 5 of 6
ESFR PENDENT
SPRINKLER
VK500 (K14.0)
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