Tyco RAPID RESPONSE LFII Series General Description Manual

Title RAPID RESPONSE Series LFII Residential Sprin-
klers 6.9 K-factor, Pendent/Recessed Pendent/Con-
cealed, NFPA 13 Optimized Wet Pipe Systems
General
Description
The TYCO RAPID RESPONSE Series
LFII Residential Pendent, Recessed
Pendent, and Concealed Pendent
Sprinklers (TY4234) are decorative,
fast response, frangible bulb sprin-
klers designed for use in residential
occupancies such as homes, apart-
ments, dormitories, and hotels. When
enhanced flow characteristics for resi-
dential portions of any occupancy per
NFPA 13 is the major consideration, the
Series LFII (TY4234) should be the first
choice.
When higher flow demands are
required 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 mostly
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 sprin-
kler systems for one- and two-family
dwellings and mobile homes per NFPA
13D, and wet pipe residential sprinkler
systems for residential occupancies up
to and including four stories in height
per NFPA 13R.
The recessed version of the sprinkler
is intended for use in areas with fin-
ished ceilings. It employs a two-piece
Style 30 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 mounting
surface position. The adjustment pro-
vided by the Recessed Escutcheon
or Concealed Cover Plate provides a
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 8
measure of flexibility with regard to
which the length of fixed pipe drops to
the sprinklers must be cut.
The concealed version utilizes a cover
plate assembly that conceals the sprin-
kler 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 Residential Pendent,
Recessed Pendent, and Concealed
Pendent Sprinklers have been designed
with heat sensitivity and water distri-
bution characteristics 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 Concealed
Pendent Sprinklers (TY4234) 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 Protec-
tive Cap. When ceiling installation is
complete, the Protective Cap must be
removed and the Cover Plate Assembly
installed. The Protective Cap must be
removed to ensure proper performance
of the sprinklers.
NOTICE
The Series LFII (TY4234) Residential
Pendent, Recessed Pendent, and
Concealed Pendent
described herein must be installed
and maintained in compliance with
this document and with the applica-
ble standards of the National Fire Pro-
tection Association, in addition to the
standards of any authorities having
jurisdiction. Failure to do so may impair
the performance of these devices.
JANUARY 2016
Worldwide
Contacts
Sprinkler s
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.
www.tyco-fire.com
TFP408