FREEDOM
®
RESIDENTIAL
CONCEALED HORIZONTAL
SIDEWALL SPRINKLER VK490
(K5.9)
TECHNICAL DATA
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.
Form No. F_032116 Rev 01 September 7, 2022
Page 4 of 7
DESIGN CRITERIA
(Also refer to the Approval Chart on page 3.)
UL Listing Requirements (C-UL-US-EU)
:
When using Viking Residential Concealed Horizontal Sidewall Sprinkler VK490 for systems designed to NFPA 13D or NFPA 13R, apply the listed areas
of coverage and minimum water supply requirements shown in the Approval Chart on page 3.
For systems designed to NFPA 13: The number of design sprinklers is to be the four contiguous most hydraulically demanding sprinklers. The minimum
required discharge from each of the four sprinklers is to be the greater of the following:
•
The flow rates given in the Approval Chart above for NFPA 13D and NFPA 13R applications for each listed area of coverage,
or
•
Calculated based on a minimum discharge of 0.1 gpm/sq. ft. over the “design area” in accordance with sections 8.5.2.1 or 8.6.2.1.2 of NFPA 13.
•
THE TOP OF THE SPRINKLER BODY AND THE TOP OF THE INSTALLATION WRENCH ARE MARKED “TOP”.
Orient the top of the sprinkler
element parallel with the ceiling as shown in Figure 3.
•
Minimum distance between residential sprinklers: 8 ft. (2.4 m).
NOTE:
Concealed sprinklers must be installed in neutral or negative pressure plenums only.
IMPORTANT: Always refer to Bulletin Form No. F_091699 - Care and Handling of Sprinklers. Also refer to Form No. F_080190 and F_080415
for general care, installation, and maintenance information. Viking sprinklers are to be installed in accordance with the latest edition of Viking
technical data, the appropriate standards of NFPA and any other similar Authorities Having Jurisdiction, and also with the provisions of
governmental codes, ordinances, and standards, whenever applicable. Final approval and acceptance of all residential sprinkler installations
must be obtained from the Authorities Having Jurisdiction.
Figure 2: Sprinkler VK490 Installation and Correct Use of Wrench
The internal design of the
sprinkler wrench is shaped to fit
over the sprinkler and protective
cap to ensure that the top of the
wrench will be oriented in the
same direction as the top of the
sprinkler deflector.
Sprinkler body
VK490
Sprinkler
wrench
Orient the sprinkler and
wrench as shown then
slide the wrench over
the sprinkler body and
the protective cap.
