Tyco ESFR-25 General Description

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 nomi-
nal K-factor of 25.2. (Refer to Figure
1.) They are suppression-mode sprin-
klers 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 sprin-
kler protection of (but not limited to)
the following storage applications:
• Most encapsulated or non-encap-
sulated 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, flammable
liquids, aerosols, and automotive
components.
For more specific criteria, refer to
Table 1 as well as the applicable de-
sign standard.
The Model ESFR-25
Sprinklers provide the
designer with hydraulic and sprinkler
placement options not
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 lower-
end head pressures, as compared
IMPORTANT
Always refer to Technical Data
Sheet TFP700 for the "INSTALLER
WARNING" that provides cau-
tions with respect to handling
and installation of sprinkler sys-
tems and components. Improp-
er handling and installation can
permanently damage
kler system or its components
and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.
Page 1 of 4
to ESFR Sprinklers having nominal
K-factors of 14.0 and 16.8. This feature
offers flexibility when sizing system
piping, as well as possibly reducing or
eliminating the need for a system fire
pump.
Also, Model ESFR-25 Sprinklers per-
mit use of a maximum deflector-to-
ceiling distance of 18 inches (460 mm)
versus 14 inches (356 mm). Addition-
ally, a storage arrangement of 40 ft.
(12,2 m) with a ceiling height of 45 ft.
(13,7 m) does not require in-rack sprin-
klers as do other ESFR Sprinklers hav-
ing nominal K-factors of 14.0 and 16.8.
The Model ESFR-25 Sprinklers are
listed by Underwriters Laboratories
(UL) for specific 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
Specific Application Listing (UL) for
the design criteria.
Applications for the TYCO ESFR
Sprinklers are expanding beyond cur-
rently recognized installation stan-
dards. For information on research fire
tests (e.g., with flammable liquids and
aerosols) that may be acceptable to an
authority having jurisdiction, contact
the Technical Services department.
NOTICE
Pendent
system
The Model ESFR-25 Sprinklers described
herein must be installed and maintained
presently
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
a sprin-
installation guidelines. The general
guidelines in this data sheet are not
intended to provide complete installation
criteria.
NOVEMBER 2012
Worldwide
www.tyco-fire.com
Contacts
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 Certified Certificate 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 1/2
(362,9 LPM/bar 1/2 )
TFP312