Tyco RAPID RESPONSE LFII Series Manual

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Series LFII Dry-Type Residential Sprinklers,
Horizontal Sidewall and Recessed Horizontal Sidewall
4.4 Nominal K-Factor
General
Description
The TYCO RAPID RESPONSE Series LFII
Dry-Type Residential Horizontal Sidewall
Sprinklers (TY2335) are decorative,
fast response, frangible bulb sprinklers
designed for use in residential occu-
pancies such as homes, apartments,
dormitories, and hotels. When aesthetics
and optimized flow characteristics are
the major consideration, the Series LFII
Sprinklers (TY2335) should be the first
choice. These sprinklers may be used in
wet pipe, dry pipe, or preaction systems.
Residential sprinklers listed for dry pipe or
preaction systems must undergo special
testing at Underwriters Laboratories,
Inc., including a 15-second delay while
passing all UL1626 test criteria. The
sprinklers described in this data sheet
have undergone this special UL testing
and are therefore listed for the types of
residential designs cited below.
Dry-Type Sprinklers are typically used
where:
• sprinklers are required on dry pipe
systems that are exposed to freezing
temperatures; for example, sprin-
kler drops from unheated portions of
buildings.
• sprinklers and/or a portion of the con-
necting piping are exposed to freezing
temperatures; for example, sprinkler
drops from wet systems into unheat-
ed areas.
IMPORTANT
Always refer to Technical Data
Sheet TFP700 for the "INSTALLER
WARNING" that provides cautions
with respect to handling and in-
stallation of sprinkler systems and
components. 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.
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• sprinklers are used on systems that are
seasonally drained to avoid freezing;
for example, vacation areas.
The Series LFII Dry-Type Residential Hori-
zontal Sidewall Sprinklers are intended
for use in Residential Sprinkler systems
for one- and two-family dwellings and
mobile homes per NFPA 13D; residential
sprinkler systems for residential occu-
pancies up to and including four stories
in height per NFPA 13R; or, sprinkler
systems for the residential portions of
any occupancy per NFPA 13.
These sprinklers have a 4.4 (63,4) K-factor
that provides the required residential flow
rates at reduced pressures, supporting
smaller pipe sizes and water supply
requirements.
The recessed version is intended for use
in areas with finished walls. 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 adjust-
ment from the flush mounting surface
position. The design of this escutcheon
provides a level of flexibility in adjusting
sprinklers to fixed pipe drops.
The Series LFII Dry-Type Residential
Horizontal Sidewall Sprinklers are de-
signed with heat sensitivity and water
characteristics proven to help in control-
ling residential fires and improving the
chance for occupants to escape or be
evacuated.
NOTICE
The Series LFII Dry-Type Residential
Horizontal Sidewall Sprinklers (TY2335)
described herein must be installed and
maintained in compliance with this docu-
ment, as well as with the applica ble
standards of the National Fire Protection
Association, in addition to the standards
of any authorities hav ing jurisdiction.
Failure to do so may impair the perfor-
mance of these de vices.
JUNE 2010
Owners are responsible for maintain ing
their fire protection system and de vices in
proper operating condition. The install-
ing contractor or sprinkler manufacturer
should be contacted with any questions.
The Series LFII Dry-Type Residential
Horizontal Sidewall Sprinklers must
only be installed in fittings that meet
the requirements of the Design Criteria
section.
Model/Sprinkler
Identification
Number (SIN)
TY2335
TFP461