Reliable N25 Manuel utilisateur

The Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523

Bulletin 909

Model N25 (SIN RA0912)

Early Suppression

Fast Response Sprinkler

Product Description

The Reliable Model N25 Early Suppression Fast Re-

sponse Sprinkler (ESFR/Quick Response Storage Sprin-

kler) is intended for use against severe fire challenges.

This sprinkler is designed to respond quickly to growing

fires and will deliver a heavy water discharge to “sup-

press” rather than “control.”

Note: The Model N25 ESFR sprinkler utilizes a levered

fusible alloy solder link in either a 165°F (74°C) or a

212°F (100°C) rating. FM Global considers this a “Quick

Response” storage sprinkler for use per FM Data Sheet

8-9.

The sprinkler has a Nominal K Factor of 25.2 (metric

362) and will deliver approximately 98 gpm (371 L/min)

of water at 15 psi (1 bar).

The smaller deflector and frame provide a broad, very

symmetrical, hemispherical pattern capable of sup-

pressing fires between sprinklers in high storage height

areas and at the same time retaining a high momentum

central core to penetrate and suppress fires occurring

directly beneath the sprinkler in low storage height ar-

eas.

The N25 ESFR sprinkler is also less susceptible to

damage due to smaller deflector and frame design. The

lighter N25 ESFR passed rough use and abuse test in

the labs without plastic protectors.

Application and Installation

The Model N25 is an ESFR sprinkler is intended for

installation in accordance with NFPA 13 and is a QR

Storage Sprinkler for use in all FM Loss Prevention Data

Sheets as well as approval of the Authority Having Ju-

risdiction.

The Model N25 ESFR sprinkler is designed for ceiling

only sprinkler system with no in-rack sprinklers required.

Protection of (but not limited to) most encapsulated or

non-encapsulated (including cartoned unexpanded)

plastics. Model N25 ESFR is also use for protection of

cartoned exposed expanded plastics as well as some

storage arrangements of rubber tires, rolled paper, and

aerosols.

Model N25 ESFR Sprinkler

Design Criteria

General guidelines:

Sprinkler Position: Pendent, align frame arms with

the pipe. Deflectors should be parallel with the ceil-

ing or roof.

System Type: Wet Pipe Systems Only

Maximum area of coverage: 100 ft2(9.3m2), greater

coverage area are allowable in some cases.

Minimum area of coverage: 64 ft2(5.8m2)

Maximum slope ceiling: 2/12 pitch (9.5°)

Maximum spacing: 12 ft (3.7m) for building heights

up to 30 ft (9.1m) and 10 feet (3.1m) for building

heights greater than 30 ft (9.1m)

Minimum spacing: 8 feet (2.4m)

Deﬂector distance from walls: At least 4 inches

(102mm) from walls, and no more than one-half the

allowable distance permitted between sprinklers.

Deﬂector to Top of Storage: at least 36 in (914mm).

Deﬂector to ceiling Distance: 6 - 18 in (152 -

457mm).

Center Line of Thermal Sensing

Element To Ceiling Distance: 4 - 17 in (101.6 -

425mm).

Listings and Approvals

1. FM Approved as a quick response storage sprinkler.

Technical Data:

Classiﬁcation

Sprinkler

Temperature Link

Color

Frame

Color

Maximum Ambient

Temperature Approvals

Sprinkler

Identiﬁcation

Number

(SIN)

°F °C °F °C

Ordinary

Intermediate

165

212

100

Black

White

Uncolored

White

100

150

FM RA0912

Material Data:

Frame Deﬂector Load Screw Lever Strut Link

Assembly Cap Washer Kick Spring

Brass Bronze Stainless

Steel

Stainless

Steel

Stainless

Steel

Beryllium Nickel,

Soldered Brass Beryllium

Nickel

Stainless

Steel

Fig. 1

Storage Type NFPA FM

Open Frame (that is, no solid shelves)

Single, Double, Multiple-Row, or Portable Rack Storage

of Class I-IV and Group A or B Plastics

Refer to NFPA 13,

Chapters 16 and 17. Refer to FM 8-9.

Solid Pile or Palletized Storage of Class I-IV

and Group A or B Plastics

Refer to NFPA 13,

Chapters 14 and 15. Refer to FM 8-9.

Idle Pallet Storage Refer to NFPA 13,

Chapter 12. Refer to FM 8-24.

Rubber Tire Storage Refer to NFPA 13,

Chapter 18. Refer to FM 8-3.

Rolled Paper Storage (Refer to the standard) Refer to NFPA 13,

Chapter 19. Refer to FM 8-21.

Flammable Liquid Storage (Refer to standard) Refer to NFPA 30. Refer to FM 7-29.

Aerosol Storage (Refer to the standard) Refer to NFPA 30B. Refer to FM 7-31.

Automotive Components In Portable Racks

(Control mode only; refer to the standard)

Refer to NFPA 13,

Chapter 20. Refer to FM 8-1 and 8-9.

TABLE 1

COMMODITY SELECTION AND DESIGN CRITERIA OVERVIEW FOR

MODEL ESFR-25 PENDENT SPRINKLERS

The Reliable Automatic Sprinkler Co., Inc.

(800) 431-1588 Sales Offices

(800) 848-6051 Sales Fax

(914) 829-2042 Corporate Offices

www.reliablesprinkler.com Internet Address

Manufactured by

Recycled

Paper

Revision lines indicate updated or new data.

EG. Printed in U.S.A. 10/13 P/N 9999970454

The equipment presented in this bulletin is to be installed in accordance with the latest published Standards of the National Fire Protection Association, Factory

Mutual Research Corporation, or other similar organizations and also with the provisions of governmental codes or ordinances whenever applicable.

Products manufactured and distributed by Reliable have been protecting life and property for over 90 years, and are installed and serviced by the most highly

qualified and reputable sprinkler contractors located throughout the United States, Canada and foreign countries.

Installation Data

Sprinkler

Type

Thread

Size

“K” Factor Maximum

Working

Pressure

Finish

US Metric

Pendent

Only

1” NPT

(R1) 25.2 362 175 psi (12,1 bar) Bronze

Maintenance

The Model N25 ESFR Sprinkler should be inspected and

the sprinkler system maintained in accordance with NFPA

25. Do not clean sprinkler with soap and water, ammo-

nia or any other cleaning fluid. Remove any sprinkler that

has been painted (other than factory applied) or damaged

in any way. A stock of spare sprinklers should be main-

tained to allow quick replacement of damaged or operated

sprinklers. Prior to installation, sprinklers should be main-

tained in the original cartons and packaging until used, to

minimize the potential for damage to sprinklers that would

cause improper operation or non-operation.

Once operated, automatic sprinklers cannot be reassem-

bled and reused. New sprinklers of the same size, type

and temperature rating must be installed. A cabinet of re-

placement sprinklers should be provided for this purpose.

Model N25 ESFR Sprinkler Speciﬁcation

Sprinklers shall be Early Suppression Fast Response

(ESFR) pendent suppression mode sprinklers specifically

tested and [FM Approved] for commodity storage applica-

tions. Sprinkler frame and deflector to be of bronze con-

struction. Fusible link assembly shall utilize the strut and

lever principle of operation with approved fast response

black-painted or white-painted beryllium-nickel thermal

element. Water seal shall consist of a Teflon-coated Bell-

ville spring washer and brass cap assembly containing no

plastic parts. ESFR sprinklers shall have a nominal K-factor

of 25.2 with 1” NPT threaded end connections. Sprinkler

temperature rating shall be [Ordinary 165°F (74°C)] [Inter-

mediate 212°F (100°C)].

Use only the Model N sprinkler wrench for removal and

installation. Any other type of wrench may damage the

sprinkler.

Note: When handling sprinklers, hold sprinklers only on

frame arms and do not apply any force on the link as-

sembly. Sprinklers should be tightened between 22 - 30

ft-lbs (29.8 - 40.7 Nm) torque. Sprinklers not tightened to

recommended torque may cause leakage or impairment

of the sprinkler. Damage sprinklers must be replaced im-

mediately.

Ordering Information

Specify:

1. Temperature rating

2. Thread type 1” NPT or ISO 7-R1

Fig. 2

Fig. 3 - Model N Wrench

Frame Arm

Link Assembly

Model N wrench

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