TFP312
Page 2 of 6
Operation
The fusible link assembly is com-
prised of two link halves that are joined
together by a thin layer of solder. When
the rated temperature is reached, the
solder melts and the two link halves
separate, activating the sprinkler and
flowing water.
Design
Criteria
The following general guidelines pro-
vided for the TYCO Model ESFR-25
Pendent Sprinklers can be used for a
quick reference.
The National Fire Protection Associa-
tion (NFPA) and FM Global (FM Approv-
als) provide installation standards that
must be used to properly design an
automatic sprinkler system utilizing
Early Suppression, Fast Response
(ESFR) Sprinklers. The guidelines pro-
vided by NFPA and FM Global may
differ. Consequently, the appropri-
ate standard must be used for a given
installation.
General guidelines are not intended to
provide complete installation criteria.
In all cases, the appropriate NFPA or
FM Global installation standard must
be referenced to ensure applicabil-
ity and to obtain complete installation
guidelines. See Table B for additional
information.
In addition to this technical data sheet,
the following data sheets describe
other TYCO ESFR Sprinklers:
•
TFP313
Model ESFR-22 (TY8226)
K=22.4 Pendent Sprinkler
•
TFP315
Model ESFR-17 (TY7226)
K=16.8 Pendent Sprinkler
•
TFP316
Model ESFR-17 (TY7126)
K=16.8 Upright Sprinkler
•
TFP317
Model ESFR-17 (TY7223)
K=16.8 Pendent Sprinkler
•
TFP318
Model ESFR-1 (TY6226)
K=14.0 Pendent Sprinkler
•
TFP319
Model ESFR-14 (TY6236)
K=14.0 Pendent Sprinkler
•
TFP320
Model ESFR-17 (TY7229)
K=16.8 Pendent Sprinkler
Roof Construction
Unobstructed or obstructed construc-
tion, such as smooth ceiling, bar joists,
beam and girder. Where the depths of
the solid structural members, as in
beams and stem, exceed 12 in. (302
mm), install ESFR Sprinklers in each
channel formed by the structural
members.
Ceiling Slope
Maximum 2 in. rise for 12 in. run (16.7%)
Maximum Coverage Area
100 ft² (9,3 m²)
Item
Description
Sprinkler Identification Number (SIN)
TY9226
K-factor, gpm/psi
½
(Lpm/bar
½
)
25.2 gpm/psi
½
(362,9 Lpm/bar
½
)
Temperature Rating ˚F (˚C)
165˚F (74˚C)
212˚F (100˚C)
Thread Size
1 in. NPT or ISO 7-R 1
Sprinkler Orientation
Pendent
Maximum Working Pressure, psi (bar)
175 psi (12,1 bar)
Components:
2
3
6
4
5
9
8
7
1
1" NPT
WRENCH
FLATS
3-13/16"
(96,8 mm)
9/16"
(14,3 mm)
NOMINAL
MAKE-IN
2" (50,8 mm)
1-13/16"
(46,0 mm)
THERMAL
SENSING
ELEMENT
TEMPERATURE
RATING
- Hook
4
-
9
-
7
8 -
5
6
-
- Link Assembly
Ejection Spring
Sealing
Assembly
Button
Strut
-
2
3 -
1 -
Compression
Screw
Deflector
Frame
FIGURE 1
MODEL ESFR-25 PENDENT SPRINKLER, 25.2K
EARLY SUPPRESSION, FAST RESPONSE
TABLE A
MODEL ESFR-25 PENDENT SPRINKLER
TECHNICAL DATA
