Tyco LFII Series Quick Start Manual

RAPID RESPONSE Series LFII Residential Sprinklers
5.8 K-factor Pendent and Recessed Pendent
Wet Pipe Systems
General
Description
The TYCO RAPID RESPONSE Series
LFII Residential Pendent and Recessed
Pendent Sprinklers (TY3934) are dec-
orative, fast response, frangible bulb
sprinklers designed for use in residen-
tial occupancies such as homes, apart-
ments, dormitories, and hotels. When
aesthetics and optimized flow charac-
teristics are the major consideration,
the Series LFII Residential Sprinklers
(TY3934) should be the first choice.
The Series LFII Residential Sprinklers
are intended for use in the following
scenarios:
• wet pipe residential sprinkler sys-
tems for one- and two-family dwell-
ings and mobile homes per NFPA
13D
• wet pipe residential sprinkler sys-
tems for residential occupancies up
to and including four stories in height
per NFPA 13R
• wet pipe sprinkler systems for the
residential portions of any occu-
pancy per NFPA 13
The recessed version of the Series
LFII Residential Sprinklers is intended
for use in areas with finished ceil-
ings. 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
Escutcheon reduces the accuracy to
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 components
and cause the sprinkler to fail to
operate in a fire situation or cause it
to operate prematurely.
Page 1 of 4
which the pipe drops to the sprinklers
must be cut.
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.
NOTICE
The Series LFII Residential Pendent and
Recessed Pendent Sprinklers (TY3934)
described herein must be installed and
maintained in compliance with this doc-
ument and the applicable standards of
the National Fire Protection Associa-
tion, 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 product manufacturer with any
questions.
Sprinkler
Identification
Number (SIN)
TY3934
Technical
Data
Approvals
UL and C-UL Listed
Certified to all requirements of
NSF/ANSI 61
MAY 2015
Worldwide
www.tyco-fire.com
Contacts
Discharge Coefficient
K = 5.8 gpm/psi 1/2 (83,5 lpm/bar
Temperature Rating
155°F (68°C) or 175°F (79°C)
Finishes
Natural Brass
Pure or Signal White
Jet Black
Chrome Plated
Physical Characteristics
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
Button . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bronze
Sealing Assembly . . Beryllium Nickel w/TEFLON
Bulb (3 mm) . . . . . . . . . . . . . . . . . . . . . . . . Glass
Compression Screw . . . . . . . . . . . . . . . . . .Brass
Deflector . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
1/2 )
TFP401