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Retail Store Applications for theTYCO Model EC-25 Storage Sprinkler

James GolinveauxJeff Barkley

Copyright © 2011 Tyco Fire Protection Products. All rights reserved.

The products and specifications published herein are for general evaluation and reference purposes only and are subject to change by Tyco Fire Protection Products without notice. For the most up-to-date information, please visit www.tyco-fire.com. The infor-mation provided in this application paper should not be relied on as a substitute for professional advice concerning specific appli-cations. ALTHOUGH TYCO FIRE PROTECTION PRODUCTS HAS ENDEAVORED TO ENSURE ITS ACCURACY, ALL INFORMATION HEREIN IS PROVIDED ON AN “AS IS” BASIS, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED. Without limiting the foregoing, Tyco Fire Protection Products does not warrant the accu-racy, adequacy or completeness of any such information. All users of the information provided herein assume the risk of use or reliance on such information and Tyco Fire Protection Products shall not be liable for any damages for such use including, but not limited to, indirect, special, incidental or consequential damages.



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Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Design Criteria for Retail Store Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Bed, Bath & Beyond and Similar Retail Stores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Best Buy and Similar Retail Stores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Home Depot, Sam’s Club, and Similar Retail Stores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Office Depot and Similar Retail Stores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Target and Similar Retail Stores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Wal-Mart and Similar Retail Stores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

About the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

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IntroductionAs with any new technology, understanding appropriate applications is the key to successful implementation. The TYCO Model EC-25 Sprinkler is the most powerful control-mode sprinkler ever developed. In addition to better fire protection, it provides unsurpassed economic advantages. With reference to tested performance documented in the related white paper, “Benefits of the TYCO Model EC-25 Storage Sprinkler”, the Model EC-25 Sprinkler’s 100 ft2 (9,3 m2) minimum coverage area and 196 ft2 (18,2 m2) maximum coverage area provide a superior level of fire protection by:

•eliminating sprinkler skipping

•controlling the number of operating sprinklers

Additionally, the Model EC-25 Sprinkler offers a higher safety factor regarding the discharge from the ini-tial sprinkler in a fire event. With a K-factor of 25.2 GPM/psi1/2 (362,9 LPM/bar1/2), the first sprinkler with an average static water supply of 70 psi (4,83 bar) will discharge approximately 210 GPM (795 LPM) or 1.0 GPM/ft2 (40,7 mm/min) over a coverage area of 196 ft2 (18,2 m2) per sprinkler. In contrast, a sprinkler with a K-factor of 8.0 GPM/psi1/2 (115,2 LPM/bar1/2) will only discharge 67 GPM (253,6 LPM) or 0.67 GPM/ft2 (27,2 mm/min) over a coverage area of 100 ft2 (9,3 m2) per sprinkler.

BenefitsKey benefits of the Model EC-25 Sprinkler include lower installed cost and better fire protection when com-pared to standard coverage sprinkler systems. These benefits are provided by:•Fewer opened sprinklers and fewer consumed pallets than K-8.0 (115), K-11.2 (160), and K-16.8 (240)

standard coverage sprinklers as shown in full-scale fire tests performed at UL•Fewer branch lines and fewer sprinklers as a result of the extended coverage area•Lower operating pressures in accordance with the S x L Spacing Rules defined by NFPA 13, Section 8.5.2•Lowest hydraulic system demand provided in FM Global Property Loss Prevention Data Sheet 8-9, July

2011 Revision, and Engineering Bulletin 06-11


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Design Criteria for Retail Store ApplicationsThe designs described in the following sub-sections are based on fire testing at Underwriters Laboratories (UL). These designs represent conditions existing in many retail stores. In all comparisons cited during test-ing, the Model EC-25 Sprinkler outperformed smaller-orifice sprinklers. These designs are based on full-scale fire test data, which initially was the basis for an equivalent method of protection as allowed by NFPA 13 and eventually provided a basis for NFPA 13 Chapter 20.3 protection of retail stores. Fire loading in these tests markedly exceeded the fire loading in existing stores with ceiling-only protection. All fire tests conducted with the Model EC-25 Sprinkler involved ignitions between 4 sprinklers because of the use of 14 ft x 14 ft (4,3 x 4,3 m) extended coverage spacing. In recognition of other possible ignition scenarios, 70-ft (21,3 m) rack length limitations were inserted to ensure limitation of sprinkler operations to no more than the design area for the solid shelf arrangements. If a fire burned the entire length of a 70-ft (21,3 m) rack, sprinkler operations would not exceed the 2000 ft2 (185,8 m2) design.

Sprinkler design criteria used was for storage and display of the following:

•Class I-IV commodities•Cartoned (non-expanded and expanded) Group A Plastics•Non-expanded exposed Group A Plastics in retail stores

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Home Depot, Sam’s Club, and Similar Retail Stores According to thorough fire testing at UL, a wet pipe system designed to provide 0.7 GPM/ft2 (28.5 mm/min) density over 2000 ft2 (185,8 m2) area for the first 4 sprinkler operations and a 0.6 GPM/ft2 (48.4 mm/min) density over 2000 ft2 (185,8 m2) area shall be permitted to protect single and double-row slatted shelf racks when the following conditions are met:

•Model EC-25 Sprinklers UL-Listed for storage occupancies shall be provided. •Shelves shall be slatted using a 2-in (50,8 mm) thick by maximum 6-in (152,4 mm) wide slats held in

place by spacers that maintain a minimum 2-in (50,8 mm) opening between each slat. •No slatted shelf levels in the rack shall be allowed above nominal 12-ft (3,7 m) level. •Wire mesh (greater than 50 percent opening) shall be permitted for shelf levels above 12 ft (3,7 m). •Solid plywood shelving (3 ft-6 in x 8 ft-3 in or 1,1 m x 2,5 m) shall be permissible over the wood slats at

the 5-ft (1,5 m) level. •Perforated metal (open area of 40 percent or more) shall be permitted over the slatted shelves up to the

60-in (1,5 m) level. •Other than what is allowed in solid plywood or similar materials shall not be placed on the slatted shelves. •Solid veneered particle board displays shall be permissible provided that all flues are maintained and only

one display is installed per bay. •Maximum roof height shall be 30 ft (9,1 m) in the protected area. •Maximum storage height shall be 22 ft (6,7 m). •Aisle widths shall be a minimum of 8 ft (2,4 m). •Minimum transverse flue spaces of 3 in (76,2 mm) every 10 ft (3,05 m) horizontally shall be provided. •Minimum longitudinal flue spaces of 6 in (152,4 mm) shall be provided for double-row racks. •Storage in the aisle shall be permissible provided the aisle storage is no more than 4-ft (1,2 m) high and a

minimum clear aisle of 4 ft (1,2 m) is maintained.

Wal-Mart and Similar Retail Stores According to thorough fire testing at UL, a wet pipe system designed to provide a 0.50 GPM/ft2 (20,3 mm/min) density over a 2000 ft2 (185,8 m2) area for the first 4 sprinkler operations, and a 0.425 GPM/ft2 (17,3 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers, shall be permitted in solid steel cantilever-style retail shelving racks (gondola racks) when the following conditions are met:

•Model EC-25 Sprinklers UL-Listed for storage occupancies shall be provided. •Storage height shall not exceed 12 ft (3,7 m). •Ceiling height shall not exceed 22 ft (6,7 m) in the protected area. •Gondola rack structure shall not exceed a 48-in (1,2 m) aggregate depth or a height of 78 in (2,0 m). •A minimum aisle of 5 ft (1,5 m) between storage shall be maintained. •Rack lengths shall be no more than 70 ft (21,3 m).


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Best Buy and Similar Retail Stores According to thorough fire testing at UL, a wet pipe system designed to provide a 0.50 GPM/ft2 (20,3 mm/min) density over a 2000 ft2 (185,8 m2) area for the first 4 sprinkler operations, and a 0.425 gpm/ft2 (17,3 mm/min) density over a 2000 ft2 (185,8 m2 ) area, without the use of in-rack sprinklers, shall be permitted in solid steel cantilever-style retail shelving racks (gondola racks) when the following conditions are met:

•Model EC-25 Sprinklers UL-Listed for storage occupancies shall be provided. •Storage height shall not exceed 15 ft (4,6 m). •Ceiling height shall not exceed 25 ft (7,6 m) in the protected area. •Gondola rack structure shall not exceed a 60-in aggregate depth or a height of 8 ft (2,4 m). •A perforated metal deck at the 8-ft (2,4 m) level shall be permissible with storage placed on top with or

without flue spaces to a maximum height from floor of 15 ft (4,6 m). •Rack lengths shall not exceed 70 ft (21,3 m). •A minimum aisle space of 6 ft (1,8 m) shall be provided.

Target and Similar Retail Stores According to thorough fire testing at UL, a wet pipe system designed to provide a 0.55 GPM/ft2 (22,4 mm/min) density over a 2000 ft2 (185,8 m2) area for the first 4 sprinkler operations, and a 0.45 GPM/ft2 (18,3 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers, shall be permitted when the fol-lowing conditions are met:

•Model EC-25 Sprinklers UL-Listed for storage occupancies shall be provided. •Storage height shall not exceed 15 ft (4,6 m). •Ceiling height shall not exceed 20 ft-6 in (6,3 m). •Shelving structure shall not exceed a 48-in (1,2 m) aggregate depth or a height of 12 ft (3,7 m). •Shelving shall be permitted to be constructed of solid particle board. •A minimum aisle space of 3 ft (0,9 m) shall be maintained. •Rack length shall be a maximum of 70 ft (21,3 m).

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Office Depot and Similar Retail Stores According to thorough fire testing at UL, a wet pipe system designed to a 0.45 GPM/ft2 (18,3 mm/min) density over a 2000 ft2 (185,8 m2) area for the first 4 sprinkler operations, and a 0.38 GPM/ft2 (15,4 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers, shall be permitted in steel retail sales floor shelving racks where the following conditions are met:

•Model EC-25 Sprinklers UL-Listed for storage occupancies shall be provided. •Storage height shall not exceed 14 ft (4,3 m). •Ceiling height shall not exceed 20 ft (6,1 m). •Solid metal shelving shall be permissible up to the 72-in (1,8 m) level; wire shelving shall be permissible

up to the 10-ft (3,0 m) level. •Solid metal shelving shall not exceed a 66-in (1,7 m) aggregate depth with a 6-in (152,4 mm) longitudinal

flue between 2, 30-in (0,8 m) deep shelves. •A minimum aisle space of 5 ft (1,5 m) shall be maintained. •A minimum longitudinal flue of 6 in (152,4 mm) shall be maintained. •Rack length shall be a maximum of 70 ft (21,3 m).

Bed, Bath & Beyond and Similar Retail Stores According to thorough fire testing at UL, a wet pipe system designed to provide a 0.55 GPM/ft2 (22,4 mm/min) density over a 2000 ft2 (185,8 m2) area for the first 4 sprinkler operations, and a 0.49 GPM/ft2 (19,9 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers, shall be permitted in retail solid shelved steel rack structures when the following conditions are met:

•Model EC-25 Sprinklers UL-Listed for storage occupancies shall be provided. •Storage height shall not exceed 16.5 ft (5,0 m). •Ceiling height shall not exceed 22 ft (6,7 m). •Shelving structure shall not exceed a 51-in (1,3 m) aggregate depth or a height of 148 in (3,8 m). •The intersection of perpendicular steel racks shall be permissible as long as no storage is placed within the

void space at the junction of the racks. •The top shelf shall be wire mesh. •A minimum aisle width of 4 ft (1,2 m) shall be maintained between shelf units and other displays.


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SummaryIn summary, the TYCO Model EC-25 Storage Sprinkler provides lower installed cost and better fire protec-tion when compared to standard coverage sprinkler systems because of these key benefits:

•Better Fire Protection In fire tests that compared the Model EC-25 Extended Coverage Sprinkler with K-8.0 (115), K-11.2 (160), and K-16.8 (240) standard coverage sprinklers, the Model EC-25 Sprinkler opened fewer sprinklers and consumed fewer pallets.

•Fewer Branch Lines The Model EC-25 Sprinkler provides significant flexibility in optimizing the number of branch lines in a bay supporting distances from 8 ft (2,4 m) to 14 ft (4,3 m) with a coverage area up to 196 ft2 (18,2 m2). Spacing to the 15 ft (4,6 m) maximum is only allowed with a coverage area of 144 ft2 (13,4 m2).

•Fewer Sprinklers The same extended coverage that reduces the number of branch lines also reduces the number of sprinklers.

•Lower Operating Pressures Using the NPFA 13 S x L Spacing Rules, the Model EC-25 Sprinkler can cover smaller areas while oper-ating at lower pressures, delivering 0.6 GPM/ft (24,4 mm/min) at standard spacing with an operating pressure of only 7 psi (0.48 bar).

•Lowest Hydraulic System Demand The Model EC-25 Sprinkler provides a minimal water requirement, combined with the extended cover-age, for ceiling heights of 35 ft (10,5 m) or less as provided in FM Global Property Loss Prevention Data Sheet 8-9, July 2011 Revision, and Engineering Notice 06-11.

To learn more about how you can use the TYCO Model EC-25 Sprinkler to reduce your installed system costs and provide better fire protection, contact your local Tyco Representative.

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About the AuthorsJames E. GolinveauxGeneral Manager, Water Suppression ProductsWith 29 years of experience in the fire protection industry including both contracting and manufacturing, Mr. Golinveaux is the General Manager of Water Suppression Products for Tyco Fire Protection Products. His current role applies his experience globally in the fire protection industry to develop advancements in water-based fire protection devices and systems. He sits on the Board of Trustees for the Fire Protection Research Foundation, as well as multiple other Boards and Councils including the Factory Mutual Advisory, AFSA, NFSA, International Fire Sprinkler Association, and the Fire Sprinkler Association of Brazil. He is also a member of the NFPA 13, 88A, 101, and 5000 Technical Committees. He has consistently served as a subject matter expert for the past two editions of the NFPA Fire Protection Handbook and the NFPA 13 Handbook.

Jeff BarkleyProduct Manager, Water Storage ProductsWith over 20 years of product management and marketing experience in a variety of industries, Mr. Barkley is Product Manager for the Water Storage product line at Tyco Fire Protection Products, located at the Cranston Technology Center in Rhode Island. In this role, Mr. Barkley is involved with research, development, and support of existing and new products to protect high piled storage facilities such as warehouses and distribu-tion centers. Mr. Barkley has authored a number of technical papers in automatic test equipment, electronic design automation, and fire protection.


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800-523-6512 / 215-362-0700

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Technical Services

800-381-9312 / 1-401-781-8220

www.tyco-fire.com October 2011

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