Tyco LFII Series Quick Start Manual
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RAPID RESPONSE Series LFII Residential
4.9 K-factor Pendent Sprinkler
Wet Pipe and Dry Pipe Systems
www.tyco-fire.com
General
Description
TYCO RAPID RESPONSE Series
LFII Residential 4.9K Pendent and
Recessed Pendent Sprinklers (TY2234)
are decorative, fast response, frangible bulb sprinklers designed for use
in residential occupancies such as
homes, apartments, dormitories, and
hotels. When aesthetics and optimized
flow characteristics are the major consideration, the Series LFII Residential
Sprinklers (TY2234) should be the first
choice.
The Series LFII Residential Sprinklers
are intended for use in the following
scenarios:
• wet and dry pipe residential sprinkler systems for one- and two-family dwellings and mobile homes per
NFPA 13 D
• 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 recessed version of the Series
LFII Residential Sprinklers is intended
for use in areas with finished ceilings.
It employs a two-piece Style 20
Recessed Escutcheon. The Recessed
Escutcheon provides 1/4 inch
(6,4 mm) of recessed adjustment or up
to 1/2 inch (12,7 mm) of total adjustment
from the flush ceiling position. The
adjustment provided by the Recessed
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 fire situation or cause it
to operate prematurely.
Escutcheon reduces the accuracy to
which the pipe drops to the sprinklers
must be cut.
The Series LFII Residential Sprinklers
have been designed with heat sensitivity and water distribution characteristics proven to help in the control
of residential fires and to improve the
chance for occupants to escape or be
evacuated.
Dry Pipe System Application
The Series LFII Residential Pendent
and Recessed Pendent Sprinklers
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, it has been
determined that the number of design
sprinklers (hydraulic design area) for
the Series LFII Residential Pendent and
Recessed Pendent Sprinklers (TY2234)
need not be increased over the number
of design sprinklers (hydraulic design
area) as specified for wet pipe sprinkler
systems, as is accustomed for density/
area sprinkler systems designed per
NFPA 13 .
Consequently, the Series LFII Residential Sprinklers offer the features
of non-water filled 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.
NOTICE
The Series LFII Residential Pendent
and Recessed Pendent Sprinklers
(TY2234) described herein must be
installed and maintained in compliance
with this document and the applicable
standards of the National Fire Protection Association (NFPA), 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 fire protection system
and devices in proper operating condition. Contact the installing contractor or product manufacturer with any
questions.
Sprinkler
Identification
Number (SIN)
TY2234
Technical
Data
Approvals
UL Listed (for use with wet pipe and dry
pipe systems)
C-UL Listed (for use only with wet pipe
systems)
Certified to all requirements of
NSF/ANSI 61
(Refer to the Design Criteria section for
details on these approvals.)
Maximum Working Pressure
175 psi (12,1 bar)
Discharge Coefficient
K=4.9 gpm/psi
Temperature Rating
155°F (68°C) or 175°F (79°C)
Finishes
Natural Brass, Pure White, Signal White, or
Chrome Plated
Physical Characteristics
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brass
Button . . . . . . . . . . . . . . . . . . . . . . . . . . . Copper
Sealing Assembly ..Beryllium Nickel w/TEFLON
Bulb (3 mm) . . . . . . . . . . . . . . . . . . . . . . . . Glass
Compression Screw . . . . . . . . . . . . . . . . .Bronze
Deflector . . . . . . . . . . . . . . . . . . . . . . . . . .Bronze
1/2
(70,6 lpm/bar
1/2
)
Page 1 of 6 JANUARY 2016 TFP400
TFP400
ESCUTCHEON
2
6
*
4
5
3
Components:
1
7/16" (11,1 mm)
ESCUTCHEON
CROSS SECTION PENDENT RECESSED PENDENT
Page 2 of 6
-
Frame
-
Button
-
Sealing Assembly
-
Bulb
-
Compression
Screw
-
Deector
Temperature
rating is
indicated on
Deector.
*
1
2
3
4
5
6
*
RAPID RESPONSE SERIES LFII RESIDENTIAL
4.9K PENDENT AND RECESSED PENDENT SPRINKLERS (T Y2234)
Operation
The glass bulb contains a fluid that
expands when exposed to heat. When
the rated temperature is reached, the
fluid expands sufficiently to shatter the
glass bulb, allowing the sprinkler to
activate and flow water.
Design
Criteria
The TYCO RAPID RESPONSE Series
LFII Residential 4.9K Pendent and
Recessed Pendent Sprinklers are UL
and C-UL Listed for installation in
accordance with this section.
Residential Sprinkler
Design Guide
When conditions exist that are outside
the scope of the provided criteria, refer
to the Residential Sprinkler Design
Guide TFP490 for the manufacturer’s recommendations that may be
acceptable to the local authority having
jurisdiction.
System Ty p e s
Per the UL Listing, wet pipe and dry
pipe systems may be utilized. Per the
C-UL Listing, only wet pipe systems
may be utilized.
Refer to Technical Data Sheet TFP485
for the use of residential sprinklers in
residential dry pipe systems.
Ceiling Types
Smooth flat horizontal, or beamed, or
sloped, in accordance with the 2013
Edition of NFPA 13D, 13R, or 13, as
applicable.
Hydraulic Design
(NFPA 13D and 13R)
For systems designed to NFPA 13D
or NFPA 13R, the minimum re quired
sprinkler flow rates are given in
NOMINAL
MAKE-IN
1/2"
NPT
PLATE SEATING
SURFACE
2-1/4"
(57,2 mm)
1-5/8"
(41,3 mm)
FIGURE 1
Tables A and B as a function of temperature rating and the maximum
allowable coverage areas. The
sprinkler flow rate is the minimum
required discharge from each of the
total number of “design sprinklers” as
specified in NFPA 13D or NFPA 13R.
The number of “design sprinklers”
specified in NFPA 13D and 13R for wet
pipe systems is to be applied when
designing dry pipe systems.
Hydraulic Design
(NFPA 13)
For systems designed to NFPA 13, the
number of design sprinklers is to be
the four most hydraulically demanding
sprinklers. The minimum required discharge from each of the four sprinklers
is to be the greater of the following:
•
The ow rates given in Table A or
B as a function of temperature
rating and the maximum allowable
coverage area.
•
A minimum discharge of 0.1 gpm/ft2
over the “design area” comprised
of the four most hydraulically
demanding sprinklers for actual
coverage areas protected by the
four sprinklers.
The number of design sprinklers specified in NFPA 13 for wet pipe systems is
to be applied when designing dry pipe
systems.
Dry Pipe System Water Delivery
When using the Series LFII Residential
Sprinklers (TY2234) in dry pipe sprinkler systems, the time for water delivery must not exceed 15 seconds for the
most remote operating sprinkler.
Obstruction to
Water Distribution
Sprinklers are to be located in accordance with the obstruction rules of
NFPA 13D, 13R, and 13 as applicable
for residential sprinklers as well as with
2-7/8" DIA.
(73,0 mm)
WRENCH
FLATS
STYLE 20
RECESSED
the obstruction criteria described within
the Technical Data Sheet TFP490.
Operational Sensitivity
Sprinklers are to be installed with a
deflector-to-ceiling distance of 1-1/4 to
4 inches.
Sprinkler Spacing
The minimum spacing between sprinklers is 8 feet (2,4 m). The maximum
spacing between sprinklers cannot
exceed the length of the coverage area
(Table A or B) being hydraulically calculated (e.g., maximum 12 feet for a
12 ft. x 12 ft. coverage area, or 20 feet
for a 20 ft. x 20 ft. coverage area).
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