General
Description
The Series LFII (TY2596) Residential
Concealed Pendent Sprinklers are
decorative, fast response, fusible sol-
der sprinklers designed for use in resi-
dential occupancies such as homes,
apartments, dormitories, and hotels.
The cover plate assembly conceals
the sprinkler operating components
above the ceiling. The flat profile of the
cover plate provides the optimum aes-
thetically appealing sprinkler design.
In addition, the concealed design of
the Series LFII (TY2596) provides 1/2
inch (12,7 mm) vertical adjustment.
This adjustment reduces the accuracy
to which the fixed pipe drops to the
sprinklers must be cut to help assure
a perfect fit installation.
The Series LFII are to be used in wet
pipe residential sprinkler systems for
one- and two-family dwellings and mo-
bile homes per NFPA 13D; wet pipe
residential sprinkler systems for resi-
dential occupancies up to and includ-
ing four stories in height per NFPA
13R; or, wet pipe sprinkler systems for
the residential portions of any occu-
pancy per NFPA 13.
The Series LFII (TY2596) has a 4.2
(60,5) K-factor that provides the re-
quired residential flow ratesat reduced
pressures, enabling smaller pipe sizes
and water supply requirements.
The Series LFII (TY2596) has been
designed with heat sensitivity and
water distribution characteristics
proven to help in the control of residen-
tial fires and to improve the chance for
occupants to escape or be evacuated.
The Series LFII (TY2596) Residential
Concealed Pendent Sprinklers are
shipped with a Disposable Protective
Cap. The Protective Cap is temporarily
removed for installation, and then it
can be replaced to help protect the
sprinkler while the ceiling is being in-
stalled or finished. The tip of the Pro-
tective Cap can also be used to mark
the center of the ceiling hole into plas-
ter board, ceiling tiles, etc. by gently
pushing the ceiling product against the
Protective Cap. When the ceiling in-
stallation is complete the Protective
Cap is removed and the Cover Plate
Assembly installed.
WARNINGS
The Series LFII (TY2596) Residential
Concealed Pendent 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. Failure to do so may
impair the performance of these de-
vices.
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/Model
Identification
Number
SIN TY2596
Technical
Data
Approvals:
UL and C-UL Listed. NYC Approved
under MEA 44-03-E.
Maximum Working Pressure:
175 psi (12,1 bar)
Discharge Coefficient:
K=4.2GPM/psi
1/2
(60,5 LPM/bar
1/2
)
Temperature Rating:
160°F/71°C Sprinkler with
135°F/57°C Cover Plate
Vertical Adjustment:
1/2 inch (12,7 mm)
Finishes:
Cover Plate:
Flat White, Bright White, Chrome, or
Custom
Physical Characteristics:
Body ..............Brass
Cap . . . . . . . . . . . . . . Bronze
Saddle .............Brass
SealingAssembly..........
. . . . . Beryllium Nickel w/ Teflon†
Soldered Link Halves . . . . . Nickel
Lever . . . . . . . . . . . . . Bronze
Compression Screw . . . . . . Brass
Deflector........... Copper
Page 1 of 4 TFP440
JANUARY, 2006
Series LFII Residential
Concealed Pendent Sprinklers, Flat Plate
4.2 K-factor
Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500
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.
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