Tyco ESFR-25 Quick Start Manual

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Model ESFR-25
Early Suppression Fast Response Pendent Sprinklers
25.2 K-factor
General
Description
The Model ESFR-25 Pendent Sprin-
klers (Ref. Figure 1) are "Early Sup-
pression Fast Response Sprinklers"
having a nominal K-factor of 25.2.
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 is primarily de-
signed for use with storage heights of
most encapsulated or non-encapsu-
lated common materials including car-
toned unexpanded plastics to 40 ft.
(12,2 m) high and with ceiling heights
to 45 ft. (13,7 m). In addition, the pro-
tection of some storage arrangements
of rubber tires, roll paper, flammable
liquids, aerosols, and automotive com-
ponents can be considered as well.
The ESFR-25 provides the system de-
signer with hydraulic and sprinkler
placement options not presently avail-
able to the traditional ESFR sprinklers
having a nominal K-factor of 14.0. In
particular, the Model ESFR-25 has
been designed to operate at substan-
tially lower end head pressures, as
compared to ESFR sprinklers having a
nominal K-factor of 14.0. This feature
offers flexibility when sizing the sys-
tem piping, as well as possibly reduc-
IMPORTANT
Always refer to Technical Data
Sheet TFP700 for the "INSTALLER
WARNING" that provides cautions
with respect to handling and instal-
lation of sprinkler systems and com-
ponents. Improper handling and in-
stallation can permanently damage
a sprinkler system or its compo-
nents and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.
Page 1 of 8
ing or eliminating the need for a sys-
tem fire pump. Also, the Model ESFR-
25 permits use of a maximum deflec-
tor-to ceiling distance of 18 inches
(460 mm) versus 14 inches (360 mm);
and, 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 ESFR sprinklers having a
nominal K-factor of 14.0.
Applications for the Model ESFR-25
Sprinklers are expanding beyond the
current recognized installation stand-
ards. For information regarding re-
search fire tests which may be accept-
able to an Authority
Jurisdiction (e.g., flammable liquids,
exposed plastics, and aerosols),
please contact the Technical Services
Department.
WARNINGS
The Model ESFR-25 Sprinklers de-
scribed herein must be installed and
maintained in compliance with this
document, as well as with the applica-
ble standards of the National Fire Pro-
tection Association, in addition to the
standards of any other authorities hav-
ing jurisdiction (e.g., FM Global). Fail-
ure to do so may impair the perform-
ance of these devices.
The owner is responsible for maintain-
ing their fire protection system and de-
vices in proper operating condition.
The installing contractor or sprinkler
manufacturer should be contacted
with any questions.
Sprinkler
Identification
Numbers
SIN TY9226 - (Pendent K=25.2)
TY9226 is a redesignation for C9226,
G8441, and S8010.
JUNE, 2007
Having
TFP312