Johnson Controls tyco RAPID RESPONSE LFII Series Manual

RAPID RESPONSE Series LFII Residential Sprinklers
4.9 K-factor Recessed Pendent, Dry Type
Wet Pipe and Dry Pipe Systems
General
Description
The TYCO RAPID RESPONSE Series
LFII Dry Type Residential Recessed
Pendent Sprinklers (TY2235) are dry
type, decorative, fast response, fran-
gible bulb sprinklers designed for use
in residential occupancies such as
homes, apartments, dormitories, and
hotels.
The Series LFII Dry Type Residential
Recessed Pendent Sprinklers (TY2235)
are typically used for the following
situations:
• where sprinklers are required on dry
pipe systems that are exposed to
freezing temperatures; for example,
sprinkler drops from unheated
portions of buildings
• where sprinklers and/or a portion of
the connecting piping are exposed
to freezing temperatures;
example, sprinkler drops from wet
systems into unheated areas
• where sprinklers are used on
systems that are seasonally drained
to avoid freezing; for example,
vacation areas
The Series LFII Dry Type Residen-
tial Recessed Pendent Sprinklers are
intended for use in residential sprinkler
systems for one- and two-family dwell-
ings and mobile homes per NFPA 13D;
residential sprinkler systems for resi-
dential occupancies up to and includ-
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
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 6
ing four stories in height per NFPA
13R; or, sprinkler systems for the resi-
dential portions of any occupancy per
NFPA 13.
The Series LFII Dry Type Residential
Recessed Pendent Sprinklers provide
flexibility in adjusting sprinklers to
the fixed pipe drops. The Recessed
Escutcheon provides 1/4 in. (6,4 mm)
of recessed adjustment or up to 1/2 in.
(12,7 mm) of total adjustment from the
flush mounting surface position.
The Series LFII Dry Type Residen-
tial Recessed Pendent Sprinklers are
designed with heat sensitivity and
water characteristics proven to help in
controlling residential fires and improv-
ing the chance for occupants to escape
or be evacuated.
Corrosion-resistant coatings, where
applicable, are utilized to extend the life
of copper alloy sprinklers beyond that
which would otherwise be obtained
when exposed to corrosive atmo-
for
spheres. Although corrosion-resistant
coated sprinklers have passed the
standard corrosion tests of the appli-
cable Approval agencies, the testing is
not representative of all possible cor-
rosive atmospheres. Consequently,
it is recommended that the end user
be consulted with respect to the suit-
ability of these coatings for any given
corrosive environment. The effects of
ambient temperature, concentration of
chemicals, and gas/chemical velocity
should be considered, as a minimum,
along with the corrosive nature of the
chemical to which the sprinklers will be
exposed.
Dry Pipe System Application
The Series LFII Residential Pendent
and Recessed Pendent Sprinklers
offers a laboratory approved option
for designing dry pipe residential sprin-
kler systems, whereas, most residential
sprinklers are laboratory approved for
wet systems only.
Through extensive testing, it has been
determined that the number of design
sprinklers (hydraulic design area) for
the Series LFII Residential Recessed
Pendent Sprinklers (TY2235) need
not be increased over the number of
design sprinklers (hydraulic design
DECEMBER 2018
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area) as specified for wet pipe sprinkler
systems, as is accustomed for density/
area sprinkler systems designed per
NFPA 13.
Consequently, the Series LFII Resi-
dential 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.
NOTICE
The Series LFII Dry Type Residential
Recessed Pendent Sprinklers (TY2235)
described herein must be installed and
maintained in compliance with this doc-
ument and the applicable standards
of the NATIONAL FIRE PROTECTION
ASSOCIATION (NFPA), in addition to
the standards of any authorities having
jurisdiction. Failure to do so may impair
the performance of these devices.
The owner is responsible for maintain-
ing their fire protection system and
devices in proper operating condi-
tion. Contact the installing contrac-
tor or product manufacturer with any
questions.
TFP460