RAPID RESPONSE Series LFII Residential Sprinklers
3.0 K-factor Pendent
Wet Pipe Systems
Page 1 of 4
DECEMBER 2018
TFP402
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
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.
Worldwide
Contacts
www.tyco-fire.com
The owner is responsible for maintain-
ing their fire protection system and
devices in proper operating condition.
The installing contractor or sprinkler
manufacturer should be contacted with
any questions.
Sprinkler
Identification
Number (SIN)
TY1234
General
Description
The TYCO RAPID RESPONSE Series
LFII Residential Pendent Sprinklers
(TY1234) 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 key consider-
ations, the Series LFII (TY1234) should
be the first choice.
The 3.0 K-factor of the Series LFII Res-
idential Pendent Sprinkler has been
designed to optimize flows (that is, to
avoid over discharging) specifically
for small coverage areas up to 14 ft x
14 ft (4,3 m x 4,3 m). The required resi-
dential flow rates can then be delivered
with the use of smaller pipe sizes and
reduced water supply requirements.
The Series LFII Residential Sprinklers
are intended for use in the following
scenarios:
• wet pipe residential sprinkler
systems for one-and two-family
dwellings and mobile homes per
NFPA 13D
• wet pipe residential sprinkler
systems for residential occupan-
cies up to and including four stories
in height per NFPA 13R
• wet pipe sprinkler systems for
the residential portions of any
occupancy per NFPA 13
The recessed version of the Series
LFII Residential Pendent Sprinkler is
intended for use in areas with finished
ceilings. It employs a two-piece Style
20 Recessed Escutcheon.
The Recessed Escutcheon provides
1/4 in. (6,4 mm) of recessed adjust-
ment or up to 1/2 in. (12,7 mm) of total
adjustment from the flush ceiling posi-
tion. The adjustment provided by the
Recessed Escutcheon reduces the
accuracy to which the pipe drops to
the sprinklers must be cut.
The Series LFII Residential Pendent
Sprinkler has been designed with heat
sensitivity and water distribution char-
acteristics proven to help in the control
of residential fires and to improve the
chance for occupants to escape or be
evacuated.
Corrosion-resistant coatings, where
applicable, are utilized to extend the life
of copper alloy sprinklers beyond that
which would otherwise be obtained
when exposed to corrosive atmo-
spheres. Although corrosion-resistant
coated sprinklers have passed the
standard corrosion tests of the appli-
cable Approval agencies, the testing is
not representative of all possible cor-
rosive atmospheres. Consequently,
it is recommended that the end user
be consulted with respect to the suit-
ability of these coatings for any given
corrosive environment. The effects of
ambient temperature, concentration of
chemicals, and gas/chemical velocity
should be considered, as a minimum,
along with the corrosive nature of the
chemical to which the sprinklers will be
exposed.
NOTICE
The Series LFII Residential Pendent
Sprinklers (TY1234) described herein
must be installed and maintained in
compliance with this document and
with the applicable standards of the
NATIONAL FIRE PROTECTION ASSO-
CIATION (NFPA), in addition to the
standards of any authorities having
jurisdiction. Failure to do so may impair
the performance of these devices.
