Tyco RAPID RESPONSE LFII Series Manual

Technical Services 800-381-9312 | +1-401-781-8220
Series LFII Residential Sprinklers
4.9 K-Factor Pendent and Recessed Pendent
Wet Pipe and Dry Pipe Systems
General
Description
The TYCO RAPID RESPONSE Series
LFII Residential Pendent and Recessed
Pendent Sprinklers (TY2234) are deco-
rative, 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
should be the first choice.
The Series LFII Residential Sprinklers
are intended for use in the following
scenarios:
• wet and dry pipe residential sprinkler
systems for one- and two-family
dwellings and mobile homes per
NFPA 13D
• wet and dry pipe residential 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
Historically residential
based on their Listing, have been
limited to wet pipe sprinkler systems
to assure speed of water delivery for a
given prescribed design area (number
of design sprinklers).
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
components. 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 8
www.tyco-fire.com
The Listing for the Series LFII
Residential Pendent and Recessed
Pendent
the laboratory approved option of
designing dry pipe residential sprinkler
systems.
Through extensive testing, it has been
determined that the number of design
sprinklers (hydraulic design area) for
the Series LFII Residential Pendent and
Recessed Pendent Sprinklers (TY2234)
need not be increased over the number
of design sprinklers (hydraulic design
area) as specified for wet pipe sprinkler
systems, as is accustomed for density/
area sprinkler systems designed per
NFPA 13.
Consequently,
Residential Sprinklers 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. Non-water filled pipe
will permit options for areas sensitive
to freezing.
These Sprinklers have a 4.9 (70,6)
K-Factor that provides the required
residential flow rates at reduced
pressures, enabling smaller pipe sizes
and water supply requirements.
sprinklers,
The recessed version of the Series
LFII Residential Sprinklers is intended
for use in areas with finished ceilings.
It employs a two-piece Style 20
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
total adjustment from the flush ceiling
position. The adjustment provided by
the Recessed Escutcheon reduces the
accuracy to which the pipe nipples to
the sprinklers must be cut.
The Series LFII Residential Pendent
and Recessed Pendent Sprinklers have
been designed with heat sensitivity
and water distribution characteristics
proven to help in the control of residen-
tial fires and to improve the chance for
occupants to escape or be evacuated.
AUGUST 2011
Sprinklers now offers
the Series LFII
NOTICE
The Series LFII Residential Pendent
and Recessed Pendent Sprinklers
(TY2234) 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.
Owners are responsible for main-
taining their fire protection system and
devices in proper operating condition.
The installing contractor or sprinkler
manufacturer should be contacted with
any questions.
TFP400