Tyco ESFR-25 General Description Manual

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Model ESFR-25
Early Suppression, Fast Response Pendent Sprinklers

25.2 K-factor

General
Description

The TYCO Model ESFR-25 Pendent
Sprinklers are Early Suppression, Fast
Response Sprinklers” having a nomi­nal K-factor of 25.2. (Refer to Figure

1.) They are suppression-mode sprin­klers that are especially advantageous
as a means of eliminating the use of
in-rack sprinklers when protecting
high-piled storage.

The Model ESFR-25 Sprinklers are
primarily used for ceiling-only sprin­kler protection of (but not limited to)
the following storage applications:

• Most encapsulated or non-encap­sulated common materials including
cartoned, unexpanded plastics.

• Uncartoned (exposed) expanded
plastics in accordance with NFPA
13 and FM Global standards.

• Some storage arrangements of
rubber tires, roll paper, ammable
liquids, aerosols, and automotive
components.

For more specic criteria, refer to
Table 1 as well as the applicable de­sign standard.

The Model ESFR-25 Pendent
Sprinklers provide the system
designer with hydraulic and sprinkler
placement options not presently
available to the traditional ESFR
sprinklers having nominal K-factors of

14.0 and 16.8. In particular, the Model

ESFR-25 Sprinkler has been designed
to operate at substantially lower­end head pressures, as compared

IMPORTANT

Always refer to Technical Data
Sheet TFP700 for the “INSTALLER
WARNING” that provides cau­tions with respect to handling
and installation of sprinkler sys­tems and components. Improp­er handling and installation can
permanently damage a sprin­kler system or its components
and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.

to ESFR Sprinklers having nominal
K-factors of 14.0 and 16.8. This feature
offers exibility when sizing system
piping, as well as possibly reducing or
eliminating the need for a system re
pump.

Also, Model ESFR-25 Sprinklers per­mit use of a maximum deector-to­ceiling distance of 18 inches (460 mm)
versus 14 inches (356 mm). Addition­ally, a storage arrangement of 40 ft.
(12,2 m) with a ceiling height of 45 ft.
(13,7 m) does not require in-rack sprin­klers as do other ESFR Sprinklers hav­ing nominal K-factors of 14.0 and 16.8.

The Model ESFR-25 Sprinklers are
listed by Underwriters Laboratories
(UL) for specic applications with a
maximum storage height of 43 ft. (13,1
m) with a maximum ceiling height of
48 ft. (14,6 m) without the requirement
for in-rack sprinklers. Refer to the
Specic Application Listing (UL) for
the design criteria.

Applications for the TYCO ESFR
Sprinklers are expanding beyond cur­rently recognized installation stan­dards. For information on research re
tests (e.g., with ammable liquids and
aerosols) that may be acceptable to an
authority having jurisdiction, contact
the Technical Services department.

NOTICE

The Model ESFR-25 Sprinklers described
herein must be installed and maintained
in compliance with this document, as
well as with the applicable standards of
the National Fire Protection Association,
in addition to the standards of any
authorities having jurisdiction (e.g., FM
Global). Failure to do so may impair the
performance of these devices.

The owner is responsible for maintaining
their fire protection system and devices in
proper operating condition. The installing
contractor or sprinkler manufacturer
should be contacted with any questions.

In all cases, the appropriate NFPA or FM
installation standard, or other applicable
standard, must be referenced to ensure
applicability and to obtain complete
installation guidelines. The general
guidelines in this data sheet are not
intended to provide complete installation
criteria.

Sprinkler
Identification
Number (SIN)

TY9226

TY9226 is a re-designation for C9226,
G8441, and S8010.

Technical
Data

Approvals

UL and C-UL Listed
FM and VdS Approved
LPCB Approved (094b/01 and 07l/01)
NYC under MEA 356-01-E
CE Certied Certicate of Conformity
1725-CPD-H0010

Maximum Working Pressure

175 psi (12,1 bar)

Pipe Thread Connections

1 inch NPT
ISO 7-R1

Discharge Coefficient

K = 25.2 GPM/psi
(362,9 LPM/bar

1/2

1/2

)

Page 1 of 4 NOVEMBER 2012 TFP312

TFP312
Page 2 of 4

1

7

Components:

-

1

Frame

-

2

Deector

-

3

Compression
Screw

-

Hook4

-

5

Strut

-

6

Link Assembly

-

7

Button

-

8

Sealing
Assembly

-

9

Ejection Spring

8

9

6

5

4

3

2

MODEL ESFR-25, EARLY SUPPRESSION, FAST RESPONSE

Temperature Ratings

165°F (74°C)
214°F (101°C)

Finish

Natural Brass

Physical Characteristics

Frame . . . . . . . . . . . . . . . . . . . . . . . . Brass

Deector. . . . . . . . . . . . . . . . . . . . . Bronze

Compression Screw. . . . . . Stainless Steel

Hook.........................Monel

Strut .........................Monel

Link Assembly . . . . . . . . . . .Solder, Nickel

Button. . . . . . . . . . . . . . . . . . . . . . . . Brass

Sealing Assembly. . . . . . . Beryllium Nickel

Ejection Spring. . . . . . . . . . . . . . . . Inconel

with TEFLON

Design
Criteria

The following general guidelines pro­vided for the TYCO Model ESFR-25
Pendent Sprinklers can be used for a
quick reference.

The National Fire Protection Associa­tion (NFPA) and FM Global (FM) pro­vide installation standards that must
be used to properly design an auto­matic sprinkler system utilizing Early
Suppression, Fast Response (ESFR)
Sprinklers. The guidelines provided
by NFPA and FM may differ. Con­sequently, the appropriate standard
must be used for a given installation.

In all cases, the appropriate NFPA or
FM installation standard must be ref­erenced to ensure applicability and

9/16"
(14,3 mm)
NOMINAL

MAKE-IN

3-13/16"

(96,8 mm)

WRENCH

FLATS

FIGURE 1

PENDENT SPRINKLER 25.2 K-FACTOR

to obtain complete installation guide­lines. The following general guidelines
are not intended to provide complete
installation criteria.

In addition to this data sheet, the fol­lowing data sheets describe other
TYCO ESFR Sprinklers:

• TFP315 — Model ESFR-17

(TY7226), K=16.8 Pendent Sprinkler

• TFP316 — Model ESFR-17

(TY7126), K=16.8 Upright Sprinkler

• TFP318 — Model ESFR-1

(TY6226), K=14.0 Pendent Sprinkler

Sys t e m Type

Wet pipe system

Roof Construction

Unobstructed or obstructed construc­tion; for example, smooth ceiling,
bar joists, beam and girder, and so
forth. Where the depths of the solid
structural members (e.g., beams and
stem) exceed 12 inches (302 mm), in­stall ESFR Sprinklers in each channel
formed by the structural members.

Ceiling Slope

Maximum 2 inch rise for 12 inch run
(16.7%)

Maximum Coverage Area

100 ft2 (9,3 m2). In some cases, the

installation standards permit a greater
coverage area.

Minimum Coverage Area

64 ft2 (5,8 m2) per NFPA 13/FM 2-0

Maximum Spacing

12 feet (3,7 m) for building heights up
to 30 feet (9,1 m)

1" NPT

1-13/16"

(46,0 mm)

THERMAL

SENSING

ELEMENT

TEMPERATURE

RATING

2" (50,8 mm)

"FITTING SIDE"

TOWARDS SPRINKLER

FITTING

WRENCH

RECESS

FIGURE 2
W-TYPE 1

SPRINKLER WRENCH

10 feet (3,1 m) for building heights
greater than 30 feet (9,1 m). In some
cases, installation standards permit a
greater spacing.

Minimum Spacing

8 feet (2,4 m)

Minimum Clearance to Commodity

36 inches (914 mm)

NFPA 13 Deflector-to-Ceiling
Distance

6 to 18 inches (152 to 457 mm)

FM 2-0

Consult FM and/or FM Guidelines for
allowable deector-to-ceiling distanc­es as well as thermal sensing element­to-ceiling criteria.