Tyco LFII Series Quick Start Manual

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Series LFII Residential, NFPA 13 Optimized
Pendent, Recessed, and Concealed Sprinklers
6.9 K-factor, 3/4" NPT
General
Description
The Tyco ® Rapid Response
LFII (TY4234) Residential Pendent, Re-
cessed Pendent, and Concealed Pen-
dent Sprinklers are decorative, fast
response, frangible bulb sprinklers de-
signed for use in residential occupan-
cies such as homes, apartments, dor-
mitories, and hotels. When enhanced
flow characteristics for residential por-
tions of any occupancy per NFPA 13 is
the major consideration, the Series LFII
(TY4234) should be the first choice.
When higher flow demands are re-
quired for residential sprinklers used
in an NFPA 13 design, the large 6.9 K-
factor of the Series LFII (TY4234) is an
attractive choice. Although primarily
intended where residential sprinklers
are to be used in an NFPA 13 design,
the Series LFII (TY4234) can also be
used in wet pipe residential sprinkler
systems for one-and two-family dwell-
ings and mobile homes per NFPA 13D,
and wet pipe residential sprinkler sys-
tems for residential occupancies up to
and including four stories in height per
NFPA 13R.
The recessed version of the Series LFII
(TY4234) is intended for use in areas
with finished ceilings. It employs a two-
piece Style 30 Recessed Escutcheon.
The Recessed Escutcheon provides
1/4 inch (6,4 mm) of recessed adjust-
ment or up to 1/2 inch (12,7 mm) of 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 in-
stallation 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.
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tal adjustment from the flush mount-
ing surface position. The adjustment
provided by the Recessed Escutcheon
or Concealed Cover Plate provides
a measure of flexibility with regard to
™ Series
which the length of fixed pipe drops to
the sprinklers must be cut.
The concealed version utilizes a cov-
er plate assembly that conceals the
sprinkler operating components above
the ceiling. The separable two-piece
design of the Cover Plate and Support
Cup Assemblies allows installation of
the sprinklers and pressure testing of
the fire protection system prior to the
installation of the ceiling or application
of a finish coating.
Also, the separable "push-on and
thread-off" two-piece design of the
concealed version provides for 1/2
inch (12,7 mm ) of vertical adjustment.
The Series LFII (TY4234) Residential
Concealed Pendent Sprinklers are
shipped with a Disposable Protective
Cap. The Protective Cap is temporar-
ily removed for installation, and it must
be replaced to protect the sprinkler
while the ceiling is being installed or
finished. The tip of the Protective Cap
can also be used to mark the center
of the ceiling hole into plaster board,
ceiling tiles, etc. by gently pushing the
ceiling product against the Protective
Cap. When ceiling installation is com-
plete, the Protective Cap must be re-
moved and the Cover Plate Assem-
bly installed. The Protective Cap must
be removed to ensure proper perfor-
mance of the sprinklers.
The Series LFII (TY4234) has been de-
signed with heat sensitivity and water
distribution characteristics proven to
help in the control of residential fires
and to improve the chance for occu-
pants to escape or be evacuated.
NOTIce
The Series LFII (TY4234) Residential
Pendent, Recessed Pendent, and
Concealed Pendent Sprinklers de-
scribed herein must be installed and
maintained in compliance with this
document and with the applicable
MAY, 2008 TFP408