Tyco Fire Product RAPID RESPONSE LFII Series Instruction Manual

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 dec-
orative, fast response, fusible solder
sprinklers designed for use in residen-
tial occupancies such as homes, apart-
ments, dormitories, and hotels.
The Cover Plate/Retainer Assem-
bly conceals the sprinkler operating
components above the ceiling. The
flat profile of the Cover Plate provides
the optimum aesthetically appealing
sprinkler design. Additionally, the con-
cealed design of the Series LFII Resi-
dential Flat-Plate Concealed Pendent
Sprinklers provides 1/2 inch (12,7 mm)
vertical adjustment. This adjustment
provides a measure of flexibility when
cutting fixed sprinkler drops.
The Series LFII Residential Flat-
Plate Concealed Pendent Sprinklers
are intended for use in the following
systems:
• wet and dry pipe
sprinkler systems for one- and two-
family dwellings and mobile homes
per NFPA 13D
• wet and dry pipe
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
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
Installation 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.
Page 1 of 6
The Series LFII Residential Sprinklers
have been designed with heat sensi-
tivity and water distribution charac-
teristics proven to help in the control
of residential fires 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
finish. After ceiling installation is com-
plete, the Protective Cap is removed
and the Cover Plate/Retainer Assem-
bly is installed. Removing the Protec-
tive 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 sprin-
kler systems, whereas, most residen-
tial sprinklers are laboratory approved
for wet systems only.
Through extensive testing, it has been
determined that the number of design
residential
sprinklers (hydraulic design area) for
the Series LFII Residential Flat-Plate
Concealed Sprinklers (TY2524) need
not be increased over the number of
residential
design sprinklers (hydraulic design
area) specified for wet pipe sprinkler
systems, as is customary for density/
area sprinkler systems designed per
NFPA 13, 13D, or 13R.
Consequently, the Series LFII Resi-
dential Flat-Plate Concealed Sprin-
klers (TY2524) 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.
JANUARY 2016
Worldwide
www.tyco-fire.com
Contacts
NOTICE
The Series LFII Residential Flat-
Plate Concealed Pendent Sprinklers
(TY2524) described herein must be
installed and maintained in compli-
ance with this document and the appli-
cable 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 main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or sprinkler manufacturer with any
questions.
Sprinkler
Identification
Number (SIN)
TY2524
TFP443