Tyco Rapid Response LFII, TY2524 Series Manual
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RAPID RESPONSE Series LFII Residential Sprinklers
4.9 K-factor Flat-Plate Concealed Pendent
Wet Pipe and Dry Pipe Systems
General
Description
The TYCO RAPID RESPONSE Series
LFII Residential Flat-Plate Concealed
Pendent Sprinklers (TY2524) are decorative, fast response, fusible solder sprinklers designed for use in residential occupancies such as homes, apartments,
dormitories, and hotels.
The Cover Plate/Retainer Assembly conceals the sprinkler operating components above the ceiling. The at pro le
of the Cover Plate provides the optimum
aesthetically appealing sprinkler design.
Additionally, the concealed design of the
Series LFII Residential Flat-Plate Concealed Pendent Sprinklers provides 1/2
inch (12,8 mm) vertical adjustment. This
adjustment provides a measure of exibility when cutting xed sprinkler drops.
The Series LFII Residential Flat-Plate
Concealed Pendent Sprinklers are intended for use in the following systems:
• wet and dry pipe residential sprinkler systems for one- and two-family dwellings and mobile homes per
NFPA 13D
• wet and dry pipe residential sprinkler systems for residential occupancies up to and including four stories in height per NFPA 13R
• wet and dry pipe sprinkler systems
for the residential portions of any
occupancy per NFPA 13.
The Series LFII Residential Sprinklers
have been designed with heat sensitivity and water distribution characteristics
proven to help in the control of residen-
IMPORTANT
Always refer to Technical Data
Sheet TFP700 for the “INSTALLER
WARNING” that provides cautions
with respect to handling and installation of sprinkler systems and components. Improper handling and installation can permanently damage
a sprinkler system or its components
and cause the sprinkler to fail to
operate in a fi re situation or cause it
to operate prematurely.
tial res and to improve the chance for
occupants to escape or be evacuated.
The Series LFII Residential Flat-Plate
Concealed Pendent Sprinklers are
shipped with a Disposable Protective
Cap. The Protective Cap protects the
sprinkler during ceiling installation or
nish. After ceiling installation is complete, the Protective Cap is removed
and the Cover Plate/Retainer Assembly is installed. Removing the Protective Cap is required for proper sprinkler
performance.
Dry Pipe System Application
The Series LFII Residential Flat-Plate
Concealed Pendent Sprinkler offers a
laboratory approved option for designing dry pipe residential sprinkler systems, whereas, most residential sprinklers are laboratory approved for wet
systems only.
Through extensive testing and as referenced in U.S. Patent 7,712,543, it has
been determined that the number of design sprinklers (hydraulic design area)
for the Series LFII Residential Flat-Plate
Concealed Sprinklers (TY2524) need not
be increased over the number of design
sprinklers (hydraulic design area) speci ed for wet pipe sprinkler systems, as
is customary for density/area sprinkler
systems designed per NFPA 13, 13D,
or 13R.
Consequently, the Series LFII Residential Flat-Plate Concealed Sprinklers
(TY2524) offer the features of non-water lled pipe in addition to not having to
increase the number of design sprinklers
(hydraulic design area) for systems designed to NFPA 13, 13D, or 13R. Nonwater lled pipe will permit options for
areas sensitive to freezing.
NOTICE
The Series LFII Residential Flat-Plate
Concealed Pendent Sprinklers (TY2524)
described herein must be installed and
maintained in compliance with this document and the applicable standards of
the National Fire Protection Association,
in addition to the standards of any authorities having jurisdiction. Failure to
do so may impair the performance of
these devices.
The owner is responsible for maintaining their fi re protection system and devices in proper operating condition. The
installing contractor or sprinkler manufacturer should be contacted with any
questions.
Sprinkler
Identifi cation
Number (SIN)
TY2524
Page 1 of 6 APRIL 2012 TFP443
TFP443
Page 2 of 6
BODY
(1/2" NPT)
CAP
SADDLE
SUPPORT
CUP WITH
ROLL FORMED
THREADS
GUIDE
PIN
GUIDE PIN
HOUSING
DEFLECTOR
THREAD INTO
SUPPORT CUP
UNTIL MOUNTING
SURFACE IS
FLUSH WITH
CEILING
SPRINKLER/SUPPORT CUP
ASSEMBLY
SEALING
ASSEMBLY
SPRINKLER
WRENCHING
AREA
COMPRESSION
SCREW
LEVER
SOLDER LINK
ELEMENT
DEFLECTOR
(OPERATED
POSITION)
RETAINER
WITH THREAD
DIMPLES
EJECTION
SPRING
WRENCH
RECESS
PUSH WRENCH
IN TO ENSURE
ENGAGEMENT
WITH SPRINKLER
WRENCHING AREA
FIGURE 2
W-TYPE 18
— SPRINKLER WRENCH —
SOLDER
TAB
COVER PLATE/RETAINER
ASSEMBLY
COVER
PLATE
FIGURE 1
RAPID RESPONSE SERIES LFII RESIDENTIAL FLAT-PLATE CONCEALED
PENDENT SPRINKLER (TY2524)
— ASSEMBLY —
SPRINKLER-
SUPPORT CUP
ASSEMBLY
DISPOSABLE
1/2"
NPT
COVER-
RETAINER
2-1/2" DIA.
(63,5 mm)
SPRINKLER-
SUPPORT CUP
ASSEMBLYASSEMBLY
3-3/16" DIA.
(81,0 mm)
1/2" (12,7 mm)
THREADED
ADJUSTMENT
1/8" GAP
(3,2 mm)
3/16"
(4,8 mm)
FACE OF
SPRINKLER
FITTING
1-7/8"±1/8"
(47,6 mm
±3,2 mm)
MOUNTING
SURFACE
TIP OPERATED POSITION
PROTECTIVE CAP
FIGURE 3
PROTECTIVE CAP AND ACTIVATED DEFLECTOR
— INSTALLATION DIMENSIONS —
OPERATED
SPRINKLER
COVER
PLATE
RETAINER
7/8" (22,2 mm)
1-1/8" (28,6 mm)
DEFLECTOR IN
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