Tyco Rapidresponse LFII Series User manual

vided by the Recessed Escutcheon re-
duces the accuracy to which the pipe
nipples to the sprinklers must be cut.
The Series LFII (TY4334) has been de-
signed with heat sensitivity and water
distribution characteristics proven to
help in the control of residential res
and to improve the chance for occu-
pants to escape or be evacuated.
NOTICE
The Series LFII (TY4334) Residen-
tial Horizontal Sidewall Sprinklers de-
scribed herein must be installed and
maintained in compliance with this
document, as well as with the appli-
cable standards of the National Fire
Protection Association, in addition to
the standards of any other 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 de-
vices in proper operating condition.
The installing contractor or sprinkler
manufacturer should be contacted
with any questions.
Sprinkler
Identification
Number (SIN)
TY4334
Technical
Data
Approvals:
UL and C-UL Listed
NSF Certied to NSF/ANSI 61
FM Approved
For details on approvals, refer to the
Design Criteria section.
Maximum Working Pressure:
175 psi (12,1 bar)
Discharge Coefficient:
K = 5.8 GPM/psi1/2 (83,5 LPM/bar1/2)
General
Description
The TYCO RAPID RESPONSE Series
LFII (TY4334) Residential Horizontal
Sidewall Sprinklers are decorative, fast
response, frangible bulb sprinklers de-
signed for use in residential occupan-
cies such as homes, apartments, dor-
mitories, and hotels. When enhanced
ow characteristics for residential
portions of any occupancy per NFPA
13 is the major consideration, the Se-
ries LFII (TY4334) should be the rst
choice.
When higher ow demands are re-
quired for residential sprinklers used
in an NFPA 13 design, the large 5.8
K-factor of the Series LFII (TY4334) is
an attractive choice. Although mostly
intended where residential sprinklers
are to be used in an NFPA 13 design,
the Series LFII (TY4334) can also be
used in wet pipe residential sprinkler
systems for one- and two-family dwell-
ings and mobile homes per NFPA 13D,
and wet pipe residential sprinkler sys-
tems for residential occupancies up to
and including four stories in height per
NFPA 13R.
The recessed version of the Series LFII
(TY4334) is intended for use in areas
with nished walls. 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 to-
tal adjustment from the ush mounting
surface position. The adjustment pro-
Temperature Rating:
155°F (68°C) or 175°F (79°C)
Finishes:
Signal White
Chrome Plated
Natural Brass
Physical Characteristics:
Frame .................... Brass
Button................... Bronze
Sealing Assembly.........Beryllium
Nickel w/TEFLON
Bulb .............3 mm dia. Glass
Compression Screw. . . . . . . . Bronze
Deector.................. Brass
Ejection Spring . . . . . . Stainless Steel
IMPORTANT
Always refer to Technical Data
Sheet TFP700 for the “INSTALLER
WARNING” that provides cautions
with respect to handling and
installation 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 6 APRIL 2013 TFP417
RAPID RESPONSE Series LFII Residential Sprinklers
5.8 K-factor Horizontal Sidewall, NFPA 13 Optimized
Wet Pipe Systems

Sealing
-
3
5
4
*
6
Compression
of Deector.
is indicated on top
Temperature rating
Bulb
Deector
-
-
-
*
1
Components:
2
Button
Frame
-
-
TOP
WRENCH
STYLE 20
RECESSED
ESCUTCHEON
FLATS
2-7/8" DIA.
RECESSED
(73,0 mm)
5
NOMINAL
PLATE SEATING
SURFACE
ESCUTCHEON
1/2" NPT
MAKE-IN
CENTERLINE
OF WATERWAY
7/16" (11,1 mm)
(57,2 mm)
(41,3 mm)
DEFLECTOR
BOSS
(9,5 mm)
3/8"
END-OF-
2-1/4"
1-5/8"
DEFLECTOR
TOP-OF-
FLATS
WRENCH
Ejection Spring
7
-
43
7
6*
1
2
Assembly
Screw
FIGURE 1
RAPID RESPONSE SERIES LFII RESIDENTIAL HORIZONTAL SIDEWALL
AND RECESSED HORIZONTAL SIDEWALL SPRINKLERS (TY4334)
1-3/8" (34,9 mm)
1-1/8" (28,6 mm)
MOUNTING
PLATE
TY4334
MOUNTING
SURFACE
CLOSURE
(73,0 mm)
1/2" (12,7 mm)
(57,2 mm)
2-1/4" DIA.
1/4" (6,4 mm)
1/8"
(3,2 mm)
(11,1±3,2 mm)
SPRINKLER
FITTING
FACE OF
7/16±1/8"
2-7/8" DIA.
BOSS
END-OF-
DEFLECTOR
TOP-OF-
DEFLECTOR
3/8"
(9,5 mm)
FIGURE 2
STYLE 20 RECESSED ESCUTCHEON
FOR USE WITH THE RAPID RESPONSE SERIES LFII
RESIDENTIAL HORIZONTAL SIDEWALL SPRINKLER (TY4334)
WRENCH RECESS
(END "A" USED
FOR TY4334)
FIGURE 3
W-TYPE 6 SPRINKLER WRENCH
RECESS
WRENCH
WITH SPRINKLER
ENGAGEMENT
IN TO ENSURE
WRENCHING AREA
PUSH WRENCH
FIGURE 4
W-TYPE 7 RECESSED
SPRINKLER WRENCH
TFP417
Page 2 of 6

Operation
The glass bulb contains a uid which
expands when exposed to heat. When
the rated temperature is reached, the
uid expands sufciently to shatter the
glass bulb, allowing the sprinkler to ac-
tivate and water to ow.
Design Criteria
UL AND C-UL LISTING CRITERIA
The TYCO RAPID RESPONSE Series
LFII (TY4334) Residential Horizontal
Sidewall Sprinklers are UL and C-UL
Listed for installation in accordance
with this section.
Residential Sprinkler Design Guide
When conditions exist that are outside
the scope of the provided criteria, re-
fer to the Residential Sprinkler Design
Guide TFP490 for the manufacturer’s
recommendations that may be ac-
ceptable to the local authority having
jurisdiction.
System Type
Only wet pipe systems may be utilized.
Ceiling Types
Smooth at horizontal, or beamed, or
sloped, in accordance with the 2013
Edition of NFPA 13D, 13R, or 13 as
applicable.
Hydraulic Design
(NFPA 13D and 13R)
For systems designed to NFPA 13D
or NFPA 13R, the minimum required
sprinkler ow rate are given in Table A
as a function of temperature rating and
the maximum allowable coverage ar-
eas. The sprinkler ow rate is the mini-
mum required discharge from each of
the total number of “design sprinklers”
as specied in NFPA 13D or NFPA 13R.
Hydraulic Design
(NFPA 13)
For systems designed to NFPA 13, the
number of design sprinklers is to be
the four most hydraulically demanding
sprinklers. The minimum required dis-
charge from each of the four sprinklers
is to be the greater of the following:
• The ow rates given in Table A as a
function of temperature rating and
the maximum allowable coverage
area.
• A minimum discharge of 0.1 gpm/ft2
over the “design area” comprised of
the four most hydraulically demand-
ing sprinklers for the actual coverage
areas being protected by the four
sprinklers.
Example No. 1: A corridor being pro-
tected is 8 ft. wide; consequently, an
actual coverage area of 8 ft. x 20 ft.
is being contemplated. Based on us-
ing the LFII (TY4334) Residential Hor-
izontal Sidewall Sprinklers, the ow
rate provided in Table A for a 16 ft x
20 ft. coverage area is 29 GPM. How-
ever based on minimum discharge of
0.1 gp m/ f t2the ow rate would be 16
GPM. In this case a minimum ow rate
of 29 GPM for this design sprinkler
must be utilized.
Example No. 2: The room being pro-
tected is 16 x 16 ft.. Based on using
the LFII (TY4334) Residential Hori-
zontal Sidewall Sprinklers, the ow
rate provided in Table A for a 16 ft. x
16 ft. coverage area is 21 GPM. How-
ever based on minimum discharge of
0.1 gp m/ f t2the ow rate would be 26
GPM. In this case a minimum ow rate
of 26 GPM for this design sprinkler
must be utilized.
Obstruction To Water Distribution
Sprinklers are to be located in accor-
dance with the obstruction rules of
NFPA 13D, 13R, and 13 as applicable
for residential sprinklers as well as
with the obstruction criteria described
within the TYCO Technical Data Sheet
TFP490.
Operational Sensitivity
The sprinklers are to be installed with
an end-of-deector-boss to wall dis-
tance of 1-1/4 to 6 inches.
In addition the top-of-deector-to-
ceiling distance is to be within the
range (Ref. Table A) being hydraulically
calculated.
Sprinkler Spacing
The minimum spacing between sprin-
klers is 8 feet (2,4 m). The maximum
spacing between sprinklers cannot ex-
ceed the width of the coverage area
(Ref. Table A) being hydraulically cal-
culated (e.g., maximum 12 feet for a
12 ft. x 12 ft. coverage area, or 16 feet
for a 16 ft. x 20 ft. coverage area).
FM APPROVAL CRITERIA
The Series LFII (TY4334) Residen-
tial Horizontal Sidewall Sprinklers are
FM Approved for installation in accor-
dance with the applicable Factory Mu-
tual Loss Prevention Data Sheet FM
2-5. Criteria provided by FM may dif-
fer for UL and/or NFPA, therefore the
designer should review and become
familiar with Factory Mutual require-
ments before proceeding with design.
The following information pertaining to
System Type, Hydraulic Design, and
Sprinkler spacing are provided for ref-
erence and are not intended to provide
complete installation criteria as pro-
vided in the applicable Factory Mutual
Loss Prevention Data Sheet.
Residential Sprinkler Design Guide
When conditions exist that are outside
the scope of the provided criteria, re-
fer to the Residential Sprinkler Design
Guide TFP490 for the manufacturer’s
recommendations that may be ac-
ceptable to the local authority having
jurisdiction.
System Type
Only wet pipe systems may be utilized.
Hydraulic Design
The number of design sprinklers is
to be the four most hydraulically de-
manding sprinklers. The minimum re-
quired discharge from each of the four
sprinklers is to be greater than the
following:
• The ow rates given in Table B as a
function of the maximum allowable
coverage area.
• A minimum discharge of 0.1 gpm/ft2
over the “design area” comprised of
the four most hydraulically demand-
ing sprinklers for the actual coverage
areas being protected by the four
sprinklers.
Example No. 1: A corridor being pro-
tected is 10 ft. wide; LFII Sidewall
Sprinklers are being installed at 16 ft.
apart along the corridor. Consequent-
ly, an actual coverage area of 10 ft. x
16 ft. is being contemplated. Based
on using the LFII (TY4334) Residential
Horizontal Sidewall Sprinklers, the ow
rate provided in Table B for a 16 ft x
20 ft. coverage area is 32 GPM. How-
ever based on minimum discharge of
0.1 g pm/ f t2the ow rate would be 16
GPM. In this case a minimum ow rate
of 24 GPM for this design sprinkler
must be utilized.
Example No. 2: The room being pro-
tected is 16 x 16 ft.. Based on using the
LFII (TY4334) Residential Horizontal
Sidewall Sprinklers, the ow rate pro-
vided in Table B for a 16 ft x 16 ft. cov-
erage area is 24 GPM. However based
on minimum discharge of 0.1 gpm/ft2
the ow rate would be 26 GPM. In this
case a minimum ow rate of 26 GPM
for this design sprinkler must be uti-
lized (in no case shall the design pres-
sure be less than 7 psi).
Sprinkler Spacing.
The minimum spacing between sprin-
klers is 8 feet (2,4 m). The maximum
spacing between sprinklers cannot ex-
ceed the width of the coverage area
(Ref. Table B) being hydraulically cal-
culated (e.g., maximum 12 feet for a
12 ft. x 12 ft. coverage area, or 16 feet
for a 16 ft. x 20 ft. coverage area).
TFP417
Page 3 of 6

TABLE A
WET PIPE SYSTEM
UL AND C-UL LISTED
SERIES LFII RESIDENTIAL HORIZONTAL SIDEWALL
AND RECESSED HORIZONTAL SIDEWALL SPRINKLERS (TY4334)
NFPA 13D, 13R, AND 13 HYDRAULIC DESIGN CRITERIA
Max. Coverage
Area (a)
Width x Length (d)
Ft. x Ft.
(m x m)
Max.
Spacing
Ft.
(m)
WET PIPE SYSTEM
Minimum Flow and Residual Pressure(b, c)
Ordinary Temp. Rating
155°F (68°C)
Intermediate Temp. Rating
175°F (79°C) Deflector
to Ceiling
Installation
Type
Minimum
Spacing
Ft.
(m)
Flow
GPM
(L/min)
Pressure
PSI
(bar)
Flow
GPM
(L/min)
Pressure
PSI
(bar)
12 x 12
(3,7 x 3,7)
12
(3,7)
19
(71,9)
10.7
(0,74)
19
(71,9)
10.7
(0,74)
4 to
6 inches
Recessed
using Style 20
Escutcheon or
non-recessed
per NFPA 13D,
13R, or 13
8
(2,4)
14 x 14
(4,3 x 4,3)
14
(4,3)
21
(79,5)
13.1
(0,90)
21
(79,5)
13.1
(0,90)
16 x 14
(4,9 x 4,3)
16
(4,9)
21
(79,5)
13.1
(0,90)
21
(79,5)
13.1
(0,90)
16 x 16
(4,9 x 4,9)
16
(4,9)
21
(79,5))
13.1
(0,90)
21
(79,5))
13.1
(0,90)
16 x 18
(4,9 x 5,5)
16
(4,9)
23
(87,1)
15.7
(1,08)
23
(87,1)
15.7
(1,08)
16 x 20
(4,9 x 6,1)
16
(4,9)
29
(109,8)
25.0
(1,72)
29
(109,8)
25.0
(1,72)
18 x 18
(5,5 x 5,5)
18
(5,5)
29
(109,8)
25.0
(1,72)
29
(109,8)
25.0
(1,72)
16 x 22
(4,9 x 6,7)
16
(4,9)
38
(143,8)
42.9
(2,96)
38
(143,8)
42.9
(2,96)
Non-recessed
per NFPA 13D,
13R, or 13
12 x 12
(3,7 x 3,7)
12
(3,7)
19
(71,9)
10.7
(0,74)
19
(71,9)
10.7
(0,74)
6 to
12 inches
Recessed
using Style 20
Escutcheon or
non-recessed
per NFPA 13D,
13R, or 13
14 x 14
(4,3 x 4,3)
14
(4,3)
23
(87,1)
15.7
(1,08)
23
(87,1)
15.7
(1,08)
16 x 14
(4,9 x 4,3)
16
(4,9)
23
(87,1)
15.7
(1,08)
23
(87,1)
15.7
(1,08)
16 x 16
(4,9 x 4,9)
16
(4,9)
23
(87,1)
15.7
(1,08)
23
(87,1)
15.7
(1,08)
16 x 18
(4,9 x 5,5)
16
(4,9)
24
(90,8)
17.1
(1,18)
24
(90,8)
17.1
(1,18)
16 x 20
(4,9 x 6,1)
16
(4,9)
30
(113,6)
26.8.
(1,85)
30
(113,6)
26.8.
(1,85)
18 x 18
(5,5 x 5,5)
18
(5,5)
30
(113,6)
26.8.
(1,85)
30
(113,6)
26.8.
(1,85)
16 x 22
(4,9 x 6,7)
16
(4,9)
40
(151,4)
47.6
(3,28)
40
(151,4)
47.6
(3,28)
Non-recessed
per NFPA 13D,
13R, or 13
(a) For coverage area dimensions less than or between those indicated, use the minimum required ow for the next highest coverage area for which
hydraulic design criteria are stated.
(b) Requirement is based on minimum ow in GPM (LPM) from each sprinkler. The associated residual pressures are calculated using the nominal K-
factor. Refer to Hydrualic Design under the Design Criteria section.
(c) For NFPA 13 residential applications, the greater of 0.1 gpm/ft2over the design area or the ow in accordance with the criteria in this table must be
used.
(d) The Width x Length dimension refers to the Width (backwall where the sprinkler is located) times the Length (horizontal throw of sprinkler).
TFP417
Page 4 of 6

TABLE B
WET PIPE SYSTEM
FM APPROVED
SERIES LFII RESIDENTIAL HORIZONTAL SIDEWALL
AND RECESSED HORIZONTAL SIDEWALL SPRINKLERS (TY4334)
HYDRAULIC DESIGN CRITERIA
Max. Coverage
Area (a)
Width x Length (d)
Ft. x Ft.
(m x m)
Max.
Spacing
Ft.
(m)
WET PIPE SYSTEM
Minimum Flow and Residual Pressure(b, c)
Intermediate Temp. Rating
175°F (79°C) Deflector
to Ceiling Installation Type
Minimum
Spacing
Ft.
(m)
Flow (b)
GPM
(L/min)
Pressure (b)
PSI
(bar)
12 x 12
(3,7 x 3,7)
12
(3,7)
22
(83,3)
14.4
(0,99)
4 to
12 inches
Recessed
using Style 20
Escutcheon or
non-recessed
8
(2,4)
14 x 14
(4,3 x 4,3)
14
(4,3)
22
(83,3)
14.4
(0,99)
16 x 16
(4,9 x 4,9)
16
(4,9)
24
(90,8)
17.1
(1,18)
16 x 18
(4,9 x 5,5)
16
(4,9)
28
(106,0)
23.3
(1,61)
16 x 20
(4,9 x 6,1)
16
(4,9)
32
(121,0)
30.4
(2,10)
18 x 18
(5,5 x 5,5)
18
(5,5)
33
(125,0)
32.4
(2,23)
(a) For coverage area dimensions less than or between those indicated, use the minimum required ow for the next
highest coverage area for which hydraulic design criteria are stated.
(b) Requirement is based on minimum ow in GPM (LPM) from each sprinkler. The associated residual pressures
are calculated using the nominal K-factor. Refer to Hydrualic Design under the Design Criteria section.
(c) For FM residential applications, the greater of 0.1 gpm/ft2over the design area (i.e., SxL) or the ow in accor-
dance with the criteria in this table must be used.
(d) The Width x Length dimension refers to the Width (backwall where the sprinkler is located) times the Length
(horizontal throw of sprinkler).
Installation
The TYCO RAPID RESPONSE
Series LFII (TY4334) Residential Hori-
zontal and Recessed Horizontal Side-
wall Sprinklers must be installed in ac-
cordance with this section.
General Instructions
Do not install any bulb type sprinkler if
the bulb is cracked or there is a loss
of liquid from the bulb. With the sprin-
kler held horizontally, a small air bub-
ble should be present. The diameter
of the air bubble is approximately 1/16
inch (1,6 mm).
A leak-tight 1/2 inch NPT sprinkler joint
should be obtained with a minimum to
maximum torque of 7 to 14 ft.-lbs. (9,5
to 19,0 Nm). Higher levels of torque
may distort the sprinkler inlet with con-
sequent leakage or impairment of the
sprinkler.
Do not attempt to compensate for in-
sufcient adjustment in an Escutcheon
Plate by under- or over-tightening the
Sprinkler. Readjust the position of the
sprinkler tting to suit.
Series LFII Residential Horizontal
Sidewall Sprinklers
The Series LFII Horizontal Sidewall
Sprinklers must be installed in accor-
dance with the following instructions.
Step 1. Horizontal sidewall sprinklers
are to be installed in the horizontal po-
sition with their centerline of waterway
perpendicular to the back wall and
parallel to the ceiling. The word “TOP”
on the Deector is to face towards the
ceiling with the front edge of the De-
ector parallel to the ceiling.
Step 2. With pipe thread sealant ap-
plied to the pipe threads, hand tighten
the sprinkler into the sprinkler tting.
Step 3. Tighten the sprinkler into the
sprinkler tting using only the W-Type
6 Sprinkler Wrench (Ref. Figure 3).
With reference to Figure 1, the W-Type
6 Sprinkler Wrench is to be applied to
the wrench ats.
Series LFII Residential Recessed
Horizontal Sidewall Sprinklers
The Series LFII Recessed Horizontal
Sidewall Sprinklers must be installed
in accordance with the following
instructions.
Step A. Recessed horizontal sidewall
sprinklers are to be installed in the hor-
izontal position with their centerline of
waterway perpendicular to the back
wall and parallel to the ceiling. The
word “TOP” on the Deector is to face
towards the ceiling.
Step B. After installing the Style 20
Mounting Plate over the sprinkler
threads and with pipe thread seal-
ant applied to the pipe threads, hand
tighten the sprinkler into the sprinkler
tting.
Step C. Tighten the sprinkler into
the sprinkler tting using only the W-
Type 7 Recessed Sprinkler Wrench
(Ref. Figure 4). With reference to
Figure 1, the W-Type 7 Recessed
Sprinkler Wrench is to be applied to
the sprinkler wrench ats.
Step D. After the wall has been in-
stalled or the nish coat has been ap-
plied, slide on the Style 20 Closure
over the Series LFII Sprinkler and push
the Closure over the Mounting Plate
until its ange comes in contact with
the wall.
TFP417
Page 5 of 6

Care and
Maintenance
The TYCO RAPID RESPONSE
Series LFII (TY4334) Residential Hori-
zontal and Recessed Horizontal Side-
wall Sprinklers must be maintained
and serviced in accordance with this
section.
Before closing a re protection system
main control valve for maintenance
work on the re protection system
which it controls, permission to shut
down the affected re protection sys-
tem must be obtained from the prop-
er authorities and all personnel who
may be affected by this action must be
notied.
Absence of an Escutcheon Plate may
delay the sprinkler operation in a re
situation.
The owner must assure that the sprin-
klers are not used for hanging any ob-
jects and that the sprinklers are only
cleaned by means of gently dusting
with a feather duster; otherwise, non-
operation in the event of a re or inad-
vertent operation may result.
Sprinklers which are found to be leak-
ing or exhibiting visible signs of corro-
sion must be replaced.
Automatic sprinklers must never be
painted, plated, coated, or otherwise
altered after leaving the factory. Mod-
ied sprinklers must be replaced to
corrosive products of combustion, but
have not operated, should be replaced
if they can not be completely cleaned
by wiping the sprinkler with a cloth or
by brushing it with a soft bristle brush.
Care must be exercised to avoid dam-
age to the sprinklers- before, during,
and after installation. Sprinklers dam-
aged by dropping, striking, wrench
twist/slippage, or the like, must be re-
placed. Also, replace any sprinkler that
has a cracked bulb or that has lost
liquid from its bulb. (Ref. Installation
Section).
The owner is responsible for the in-
spection, testing, and maintenance of
their re protection system and devic-
es in compliance with this document,
as well as with the applicable stan-
dards of the National Fire Protection
Association (e.g., NFPA 25), in addition
to the standards of any other authori-
ties having jurisdiction. The installing
contractor or sprinkler manufacturer
should be contacted relative to any
questions.
Automatic sprinkler systems are rec-
ommended to be inspected, tested,
and maintained by a qualied Inspec-
tion Service in accordance with local
requirements and/or national code.
Ordering
Procedure
When placing an order, indicate the full
product name. Contact your local dis-
tributor for availability.
Sprinkler Assembly
Specify: Series LFII (TY4334), K=5.8,
Residential Horizontal Sidewall Sprin-
kler, (specify) temperature rating,
(specify) nish, P/N (specify).
155°F (68°C)
Natural Brass ............. P/N 51-534-1-155
Signal White (RAL9003)..... P/N 51-534-4-155
Chrome Plated ............ P/N 51-534-9-155
175°F (79°C)
Natural Brass ............. P/N 51-534-1-175
Signal White (RAL9003)..... P/N 51-534-4-175
Chrome Plated ............ P/N 51-534-9-175
Recessed Escutcheon
Specify: Style 20 Recessed Escutcheon
with (specify*) nish, P/N (specify*).
*Refer to Technical Data Sheet TFP770.
Sprinkler Wrench
Specify: W-Type 6 Sprinkler Wrench,
P/N 56-000-6-387.
Specify: W-Type 7 Sprinkler Wrench,
P/N 56-850-4-001.
TFP417
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