RAPID RESPONSE Series LFII Residential
4.9 K-factor Concealed Pendent Sprinkler
Flat Plate, Wet Pipe System
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.
Scan the QR code or enter the URL
in a web browser to access the most
up-to-date electronic version of this
document. Data rates may apply.
docs.jci.com/tycofire/
rapid-response-4_9k
General
Description
The TYCO RAPID RESPONSE Series
LFII Residential 4.9K Concealed
Pendent Sprinklers (TY2534) are dec-
orative, glass bulb sprinklers, avail-
able in both ordinary 155°F (68°C) and
intermediate 200°F (93°C) tempera-
ture rated configurations. They are
designed for use in residential occu-
pancies such as homes, apartments,
dormitories, and hotels.
Page 1 of 6
The cover plate assembly conceals
the sprinkler operating components
above the ceiling. The flat profile of the
cover plate provides the optimum aes-
thetically appealing sprinkler design.
In addition, the concealed design of
the Series LFII Residential Concealed
Pendent Sprinklers provides 3/4" (19,1
mm) vertical adjustment. This adjust-
ment provides a measure of flexibility
when cutting fixed sprinkler drops.
The Series LFII Residential Concealed
Pendent Sprinklers are intended for use
in the following scenarios:
• Wet pipe residential sprinkler sys-
tems for one and two family dwell-
ings and mobile homes per NFPA
13D
• Wet pipe residential sprinkler sys-
tems for residential occupancies up
to and including four stories in height
per NFPA 13R
• Wet pipe sprinkler systems for the
residential portions of any occu-
pancy per NFPA 13
The Series LFII Residential 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 Con-
cealed Pendent Sprinklers (TY2534)
are shipped with a Disposable Protec-
tive Cap. The Protective Cap is tem-
porarily removed for installation, and
then it can be replaced to help protect
the sprinkler while the ceiling is being
installed or finished. The tip of the Pro-
tective Cap can also be used to mark
the center of the ceiling hole into the
plaster board, ceiling tiles, and so on,
by gently pushing the ceiling product
against the Protective Cap. When the
ceiling installation is complete the Pro-
tective Cap is removed and the Cover
Plate Assembly is installed.
NOVEMBER 2021
Worldwide
www.tyco-fire.com
Contacts
NOTICE
The Series LFII Residential Concealed
Pendent Sprinklers (TY2534) described
herein must be installed and main-
tained in compliance with this docu-
ment and with 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 main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
Sprinkler
Identification
Number (SIN)
TY2534
TFP446
Need help?
Do you have a question about the RAPID RESPONSE LFII Series and is the answer not in the manual?
Questions and answers