Tyco ESFR-25 Quick Start Manual

A G 8
EARLY SUPPRESSION FAST RESPONSE SPRINKLERS (FM)
& SPECIFIC APPLICATION ESFR SPRINKLERS (UL & C-UL)
MODEL ESFR-25TM PENDENT. 25.2 K-FACTOR, 1 INCH NPT**
The 25.2 K-Factor, Model ESFW25rM
Pendent Sprinklers (Ref. Figure A) are
Listed and Approved by Factory Mu-
tual Research Corporation (FM) as
"Early Suppression Fast Response
Pendent Sprinklers" designed for use
with wet pipe, automatic sprinkler sys-
tems for the fire protection of high-
piled storage. They are suppression
mode sprinklers, and their use is espe-
cially advantageous as a means of
eliminating the use of in-rack sprin-
klers. Storage arrangements which
can be protected by the ESFR-25 un-
der the FM Design Criteria include
open-frame single-row, double-row,
multiple-row, and portable rack stor-
age, as well as palletized and solid-
piled storage, of most encapsulated or
non-encapsulated, common materials
including cartoned unexpanded plas-
tics. In addition, the protection of some
storage arrangements of roll paper
and rubber tires can be considered as
well.
The 25.2 K-Factor, Model ESFR-25
Pendent Sprinklers are also Listed by
Underwriters Laboratories Inc. (UL)
and by UL for use in Canada (C-UL) as
"Specific Application Early Suppres-
sion Fast Suppression Sprinklers" for
Printed in U.S.A. 11-98
I
9/16" (14.3 mm) ;
NOMINAL MAKE-IN
:
l-13/16"
(46,0 mm)
I
I
3-13/16"
(96,6 mm)
HEAT
COLLECTOR
WRENCH FLAT
(BOTH SIDES)
l-Frame
P-Deflector
%Compression Screw
TEMPERATURE k
RATING
I-
2" (50.6 mm) -
4-Hook
7-Button
5Strut
&Link Assembly
8-Gasketed Spring Plate
g-Ejection Spring
** Pipe thread connections per IS0
7/l
can'be provided on special request.
FIGURE A
25.2 K-FACTOR, MODEL ESFR-25 PENDENT SPRINKLER ASSEMBLY
use in the protection of open-frame
single-row, double-row, multiple-row,
and portable rack storage, as well as
palletized and solid-piled storage, of
most encapsulated or non-encapsu-
lated, common materials including
cartoned unexpanded plastics as indi-
cated under the UL and C-UL Design
Criteria. These reduced design pres-
sures are not for use with roll paper or
rubber tire storage.
The ESFR-25 has a nominal K-factor
of 25 and is designed for use with
storage heights of up to a 40 ft. (12,2
m) and ceiling heights of up to 45 ft.
(13,7 m). It 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.
In particular, the ESFR-25 has been
designed to operate at substantially
lower end head pressures, as com-
pared to ESFR sprinklers having a
nominal K-Factor of 14. This feature
offers flexibility when sizing the system
piping, as well as possibly reducing or
eliminating the need for a system fire
pump. Also, the ESFR-25 permits use
of a maximum deflector-to ceiling dis-
tance of 18 inches (460 mm) versus 14
inches (360 mm); and, a storage ar-
rangement of up to 40 ft. (12,2 m) with
a ceiling height of up to 45 ft. (13,7 m)
does not require in-rack sprinklers as
does ESFR sprinklers having a nomi-
nal K-Factor of 14.
The ESFR-25, similar to the ESFR-1,
described in Technical Data Sheet
TD598, has a unique patented frame
design which substantially reduces the
frame shadow effects that normally
tend to produce non-uniformity in the
spray pattern. This feature, in combi-
nation with a time proven fusible link
mechanism design and the nominal
K-factor of 25 provides the ESFR-25
with the very latest in sprinkler technol-
OclY.
TD599