TFP317
Page 2 of 4
Design
Criteria
The following general guidelines pro-
vided for the TYCO
Model ESFR-17
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.
In all cases, the appropriate NFPA or
FM Global installation standard must
be referenced to ensure applicabil-
ity and to obtain complete installa-
tion guidelines. The following general
guidelines are not intended to provide
complete installation criteria.
System Type
Wet Pipe
Roof Construction
Unobstructed or obstructed construc-
tion (e.g., smooth ceiling, bar joists,
beam and girder, etc.).
Where the depths of the solid struc-
tural members (e.g., beams and stem)
exceed 12 in. (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 ft.
2
(9,3 m
2
)
In some cases, the installation stan-
dards permit a greater coverage area.
Minimum Coverage Area
64 ft.
2
(5,8 m
2
) per NFPA 13
Maximum Spacing
12 feet (3,7 m) for building heights up to
30 feet (9,1 m)
10 feet (3,1 m) for building heights
greater than 30 feet (9,1 m)
Minimum Spacing
8 feet (2,4 m)
Minimum Clearance to Commodity
36 inches (914 mm)
NFPA 13
Deflector-to-Ceiling Distance
6 to 14 inches (152 to 356 mm)
FM Global 2-0
Consult FM Global and/or FM Global
guidelines for allowable deflector-to-
ceiling distances as well as thermal
sensing element-to-ceiling criteria.
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.
*
*
**
**
*
1-1/2"
(38,1 mm)
THERMAL
SENSING
ELEMENT
3/4"
NPT
2-3/8"
(60,3 mm)
WRENCH
FLATS
1/2"
(12,7 mm)
NOMINAL
MAKE-IN
- Link Assembly
6
- Compression Screw
3
Hook
Strut
-
4
-
5
Deflector
Components:
Frame
-
1
2 -
7 -
8 - Sealing Assembly
Button
Temperature rating is indicated
on Deflector.
ISO 7-R 3/4 pipe thread can be
provided on special request.
2
3
6
7
8
1
4
5
*
*
**
**
*
1-1/2"
(38,1 mm)
THERMAL
SENSING
ELEMENT
3/4"
NPT
2-3/8"
(60,3 mm)
WRENCH
FLATS
1/2"
(12,7 mm)
NOMINAL
MAKE-IN
- Link Assembly
6
- Compression Screw
3
Hook
Strut
-
4
-
5
Deflector
Components:
Frame
-
1
2 -
7 -
8 - Sealing Assembly
Button
Temperature rating is indicated
on Deflector.
ISO 7-R 3/4 pipe thread can be
provided on special request.
2
3
6
7
8
1
4
5
FIGURE 1
MODEL ESFR-17 PENDENT SPRINKLER, 16.8K, 165°F (74°C)
EARLY SUPPRESSION, FAST RESPONSE
FIGURE 2
MODEL ESFR-17 PENDENT SPRINKLER, 16.8K, 212°F (100°C)
EARLY SUPPRESSION, FAST RESPONSE
