Tyco TY2235 Operation

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Series LFII Dry-Type Residential Sprinklers
Recessed Pendent
4.9 K-Factor
General
Description
The TYCO RAPID RESPONSE Series LFII
Dry-Type Residential Recessed Pendent
Sprinklers are decorative, fast response,
frangible bulb sprinklers designed for
use in residential occupancies such as
homes, apartments, dormitories, and
hotels. 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.
• sprinklers are used on systems that are
seasonally drained to avoid freezing;
for example, vacation 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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The Series LFII Dry-Type Residential Re-
cessed Pendent 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.
The Series LFII Dry-Type Residential
Recessed Pendent 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.
The Series LFII Dry-Type Residential
Recessed Pendent Sprinklers provide
flexibility in adjusting sprinklers to the
fixed pipe drops. The Recessed Es-
cutcheon 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.
NOTICE
The Series LFII Dry-Type Residential
Recessed Pendent Sprinklers (TY2235)
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.
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
Recessed Pendent Sprinklers must
only be installed in fittings that meet
the requirements of the Design Criteria
section.
December 2010
Model/Sprinkler
Identification
Number (SIN)
TY2235: Recessed Pendent 4.9K
TFP460