TFP332
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Design
Criteria
UL and C-UL Listing Requirements
The TYCO 16.8 K-factor, Model K17-231
Sprinklers may be installed in accor-
dance with NFPA 13 standard sprinkler
position and area/density flow calcu-
lation requirements for light, ordinary,
or extra hazard occupancies with a
minimum residual (flowing) pressure of
7 psi (0,5 bar) in wet or dry pipe sprin-
kler systems, or they may be installed
in accordance with NFPA 13 standard
sprinkler position and area/density
flow calculation requirements for high
piled storage occupancies (solid piled,
palletized, rack storage, bin box, and
shelf storage including but not limited
to Class I-IV and Group A plastics) with
a minimum residual (flowing) pressure
of 7 psi (0,5 bar) for wet or dry pipe
systems.
The following two examples are typical
of the types of arrangements permit-
ted by NFPA 13. For all combinations
of lesser and greater building heights,
lesser and greater storage heights,
storage arrangements, commodity
classifications, and lesser or greater
required design densities, refer to
NFPA 13 for specifics.
Example 1:
NFPA 13 provides ceiling
only protection (that is, no in-rack
sprinklers) criteria using open frame
(that is, no solid shelves) single, double,
multiple-row, or portable rack storage
(without the need for in-rack sprinkler
protection) of cartoned unexpanded
Group A or B plastics, or, cartoned
expanded Group A or B plastics, with:
• a storage height of up to 20 ft
(6,1 m);
• a maximum ceiling height of 27 ft
(8,2 m);
• a minimum deflector to top of stor-
age clearance of 18 in. (457 mm);
• a minimum design density of 0.60
gpm/ft
2
(24,4 mm/min);
• a minimum residual (flowing) pres-
sure of 7 psi (0,5 bar);
• a minimum design area of 2000 ft
2
(186 m
2
) for wet systems or 2600 ft
2
(242 m
2
) for dry pipe systems
Example 2:
NFPA 13 provides ceiling
only protection (that is, no in-rack
sprinklers) criteria using open frame
(that is, no solid shelves) single, double,
multiple-row, or portable rack storage
(without the need for in-rack sprinkler
protection) of cartoned unexpanded
Group A or B plastics, or, cartoned
expanded Group A or B plastics, with:
• a storage height of up to 25 ft
(7,6 m);
• a maximum ceiling height of 30 ft
(9,1 m);
• a minimum deflector to top of stor-
age clearance of 18 in. (457 mm);
• a minimum design density of
0.80 gpm/ft
2
(32,6 mm/min);
• a minimum residual (flowing)
pressure of 7 psi (0,5 bar);
• a minimum design area of 2000 ft
2
(186 m
2
) for wet systems or 4500 ft
2
(418 m
2
) for dry pipe systems
FM Approval Requirements
The TYCO 16.8 K-factor, Model K17-231
(TY7151) Upright Sprinklers may be
installed in accordance with the appli-
cable control mode density/area guide-
lines provided by Factory Mutual. (FM
guidelines may differ from UL and C-UL
Listing criteria.)
Item
Description
Sprinkler Identification Number (SIN)
TY7151
TY7251
TY7151 is a redesignation for C7151, G1888, and S8040
TY7251 is a redesignation for C7251, G1889, and S8041
K-factor, (gpm/psi) (lpm/bar)
16.8 gpm/psi
½
(241,9 lpm/bar
½
)
Temperature Rating ºF (ºC)
1
155°F (68°C)
1
200°F (93°C)
286°F (141°C)
Thread Size
3/4 in. NPT
Sprinkler Orientation
Upright and Pendent
Maximum Working Pressure, psi (bar)
175 psi (12,1 bar)
Note:
1. Refer to Table C for laboratory listings and approvals.
*
*
*
UPRIGHT
PENDENT
CROSS SECTION
1
2
3
4
5
6
-
2
Button
Compression
Screw
Bulb
Sealing Assembly
-
6
-
4
5 -
3 -
Frame
1 -
Deflector
2-3/8"
(60,3 mm)
WRENCH
FLAT
Temperature rating is
indicated on deflector.
1/2"
(12,7 mm)
NOMINAL
MAKE-IN
3/4"
NPT
FIGURE 1
MODEL K17-231 UPRIGHT (TY7151) AND PENDENT (TY7251) SPRINKLERS
TABLE A
MODEL K17-231 UPRIGHT AND PENDENT SPRINKLER
TECHNICAL DATA
