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1. PRODUCT IDENTIFICATION
This document covers the following product, hereafter
referred to as "sprinkler":
VK3521: Quick Response, Standard Coverage,
Pendent, K8.0 (115) Sprinkler.
2. INTENDED USE
The sprinkler is intended to be used in automatic fire
sprinkler systems as allowed by applicable approval
authorities. The sprinkler must be used in accordance
with:
1. the sprinkler's Listings, Approvals, and associated
design requirements.
2. the recognized design and installations standards
issued, for example NFPA, FM, EN, VdS, or LPCB.
3. the latest revisions of all applicable manufacturer's
documentation.
Governmental codes, ordinances, and standards may apply and may differ from one another.
!
WARNING
Cancer and Reproductive Harm www.P65Warnings.ca.gov
3. LISTING AND APPROVALS
Refer to section 5 for details and requirements that must be followed.
cULus Listed
FM Approved
CE
LPCB Approved
F_111320 Rev 05 July 2024
TECHNICAL DATA SHEET
TECHNICAL DATA SHEET
VdS Approved
UKCA Approved
MED Approved
China Approved
VK3521 Quick Response
Pendent Sprinkler K8.0 (115)
Page 1 of 9
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Summary of Contents for Viking VK3521
- Page 1 Pendent Sprinkler K8.0 (115) 1. PRODUCT IDENTIFICATION This document covers the following product, hereafter referred to as “sprinkler”: VK3521: Quick Response, Standard Coverage, Pendent, K8.0 (115) Sprinkler. 2. INTENDED USE The sprinkler is intended to be used in automatic fire sprinkler systems as allowed by applicable approval authorities.
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Page 2: Technical Specifications
Page 2 of 9 VK3521 Quick Response TECHNICAL DATA SHEET Pendent Sprinkler K8.0 (115) 4. TECHNICAL SPECIFICATIONS 4.1 Definitions Standard Pendent Sprinkler: A sprinkler intended to be oriented with the deflector below the frame so water flows downward through the orifice, striking the deflector and forming an umbrella-shaped spray pattern downward. These sprinklers are marked “SP/RP”... - Page 3 Page 3 of 9 VK3521 Quick Response TECHNICAL DATA SHEET Pendent Sprinkler K8.0 (115) 4.3 Markings and Dimensions Figure – 1 Markings Figure – 2: Dimensions Description Value Response type QR: Quick Response Listings and Approvals See sections 3 and 5...
- Page 4 Page 4 of 9 VK3521 Quick Response TECHNICAL DATA SHEET Pendent Sprinkler K8.0 (115) 4.4 Materials of Construction NOTICE: Do not disassemble the sprinkler. Figure – 3 Sprinkler Components Description Material Brass CW612N, CW508L, UNS–C36000 or UNS–C26000 Compression screw Stainless steel UNS S30400...
- Page 5 4 = Chrome Approval Specification (Escutcheons) Key: X = Installed with Viking Recessed Escutcheons Models E-1, E-2, E-3, NP-1, NP-2, and NP-3, or Viking Standard Surface Mounted Escutcheons Y = Installed with Viking Recessed Escutcheons Models E-1 and NP-1, or Viking Standard Surface Mounted Escutcheons 1 For complete part number, refer to Viking’s current price list.
- Page 6 Guards and Water Shields for XT1 Sprinklers technical data sheet for more information. 5.7 Escutcheons The sprinkler is approved for use with various styles of Viking escutcheons. Specific installation dimensions apply that must be observed. Refer to the sprinkler's Handling and Installation instructions for more information.
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Page 7: Ordering Procedure
NOTE: For Polyester, insert the desired temperature rating suffix where the dash (–) is shown. EXAMPLE: 23878MB/W = VK3521 with white polyester finish and 155 °F (68 °C) nominal temperature rating. This sprinkler is to be installed into an area with a maximum ambient temperature of 100 °F (38 °C). - Page 8 Page 8 of 9 VK3521 Quick Response TECHNICAL DATA SHEET Pendent Sprinkler K8.0 (115) 6.2 Sprinkler Accessories Figure – 4: Sprinkler Accessories Image Reference Part Number Description 23559MB Straight wrench: required for proper installation 23560MB Recessed socket wrench 01724A Sprinkler cabinet: holds up to 6 sprinklers...
- Page 9 VK3521 Quick Response TECHNICAL DATA SHEET Pendent Sprinkler K8.0 (115) 7. CONTACT The sprinkler and accessories are available through Viking distributors only. Contact your local Viking sales office which can be found on our website: Americas and Asia: www.vikinggroupinc.com/locations OR Europe, Middle East, Africa (EMEA): www.viking-emea.com/contact...
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Page 10: Product Identification
VK2022 Standard Response Pendent Sprinkler K8.0 (115) • VK3021 Quick Response Pendent Sprinkler K5.6 (80.6) • VK3521 Quick Response Pendent Sprinkler K8.0 (115) • VK3522 Quick Response Pendent Sprinkler K8.0 (115) 2. OTHER APPLICABLE DOCUMENTS For intended use and relevant conditions for the safe use of the specific sprinkler refer to the appropriate Technical Data Sheet. -
Page 11: Transport And Handling
Page 2 of 7 Model XT-1 Pendent Handling and Installation Sprinklers Instructions 3. TRANSPORT AND HANDLING WARNING A damaged or compromised sprinkler poses the risk of fatal consequences. Damaged or compromised sprinklers will not operate properly which could lead to loss of life. •... -
Page 12: Installation
Page 3 of 7 Model XT-1 Pendent Handling and Installation Sprinklers Instructions 4. INSTALLATION WARNING Installation by insufficiently qualified personnel poses the risk of fatal consequences. • This sprinkler must be installed properly by qualified personnel familiar with safe practices and applicable and recognized design and installation standards issued, for example, by NFPA, FM, VdS, or LPCB, and trained how to properly perform the installation procedures. - Page 13 Page 4 of 7 Model XT-1 Pendent Handling and Installation Sprinklers Instructions Figure – 1 Installation Dimensions with Viking Escutcheons F_030722 Rev 02 July 2024...
- Page 14 Page 5 of 7 Model XT-1 Pendent Handling and Installation Sprinklers Instructions Optional Guards, Shields, and Escutcheons: If the sprinkler shall be installed together with a guard, shield, or escutcheon refer to the applicable documents for the products used. 1. Install all required piping in the intended installation location. 2.
- Page 15 Page 6 of 7 Model XT-1 Pendent Handling and Installation Sprinklers Instructions 8. NOTICE: Over-tightening the sprinkler can cause permanent damage. For 1/2" NPT (or 15 mm BSPT) sprinkler, tighten up to a maximum torque of 14 ft-lbs (19 Nm). For 3/4" NPT (or 20 mm BSPT) sprinkler, tighten up to a maximum of 20 ft-lbs (27,1 Nm).
- Page 16 Handling and Installation Sprinklers Instructions 5. CONTACT The sprinkler and accessories are available through Viking distributors only. Contact your local Viking sales office which can be found on our website: Americas and Asia: www.vikinggroupinc.com/locations OR Europe, Middle East, Africa (EMEA): www.viking-emea.com/contact...
- Page 17 VK1001 SR Upright Sprinkler K5.6 (80.6) • VK3021 QR Pendent Sprinkler K5.6 (80.6) • VK2001 SR Upright Sprinkler K8.0 (115) • VK3521 QR Pendent Sprinkler K8.0 (115) • VK2002 SR Upright Sprinkler K8.0 (115) • VK3522 QR Pendent Sprinkler K8.0 (115) •...
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Page 18: Removal And Replacement
Page 2 of 3 Operation and Maintenance Model XT-1 Sprinklers Instructions Obstructions and obstacles Obstructions and obstacles may compromise sprinkler discharge patterns which are critical for proper fire protection. • NEVER attach items to sprinklers or hang items • ALWAYS remove obstructions and obstacles to from the ceiling in an area protected with sprinklers. - Page 19 At end of use the product described here should be disposed of via the national recycling system. 6. CONTACT The sprinkler and accessories are available through Viking distributors only. Contact your local Viking sales office which can be found on our website: Americas and Asia: www.vikinggroupinc.com/locations...
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