Tyco rapid response LFII Series User manual

General
Description
The Tyco®Rapid Response™ Series
LFII (TY2596) Residential Concealed
Pendent Sprinklers are decorative, fast
response, fusible solder sprinklers de-
signed for use in residential occupan-
cies such as homes, apartments, dor-
mitories, and hotels.
The cover plate assembly conceals the
sprinkler operating components above
the ceiling. The flat profile of the cover
plate provides the optimum aestheti-
cally appealing sprinkler design. In
addition, the concealed design of the
Series LFII (TY2596) provides 1/2 inch
(12,7 mm) vertical adjustment. This ad-
justment provides a measure of flexi-
bility with regard to which the length of
fixed pipe drops to the sprinklers must
be cut.
The Series LFII are to be used in wet
pipe residential sprinkler systems for
one-and two-family dwellings and mo-
bile homes per NFPA 13D; wet pipe
residential sprinkler systems for resi-
dential occupancies up to and includ-
ing four stories in height per NFPA
13R; or, wet pipe sprinkler systems for
the residential portions of any occu-
pancy per NFPA 13.
The Series LFII (TY2596) has a 4.2
(60,5) K-factor that provides the re-
quired residential flow rates at reduced
pressures, enabling smaller pipe sizes
and water supply requirements.
The Series LFII (TY2596) has been de-
signed with heat sensitivity and water
distribution characteristics proven to
help in the control of residential fires
and to improve the chance for occu-
pants to escape or be evacuated.
The Series LFII (TY2596) Residen-
tial Concealed Pendent Sprinklers are
shipped with a Disposable Protective
Cap. The Protective Cap is temporar-
ily removed for installation, and then
it can be replaced to help protect the
sprinkler while the ceiling is being in-
stalled or finished. The tip of the Pro-
tective Cap can also be used to mark
the center of the ceiling hole into plas-
ter board, ceiling tiles, etc. by gently
pushing the ceiling product against
the Protective Cap. When the ceiling
installation is complete the Protective
Cap is removed and the Cover Plate
Assembly installed.
NOTICE
The Series LFII (TY2596) Residential
Concealed Pendent Sprinklers de-
scribed herein must be installed and
maintained in compliance with this
document and with the applicable
standards of the National Fire Pro-
tection Association, in addition to the
standards of any authorities having ju-
risdiction. 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/Model
Identification
Number
SIN TY2596
Series LFII Residential
Concealed Pendent Sprinklers, Flat Plate
4.2 K-factor
Technical Services: Tel: [phone] / Fax: [phone]
Page 1 of 6 MAY, 2008 TFP440
IMPORTANT
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 in-
stallation 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.

Technical
Data
Approvals:
UL and C-UL Listed. NYC Approved
under MEA 44-03-E.
The Series LFII Concealed Pendent
Sprinklers are only listed and approved
with the Series LFII Concealed Cover
Plates having a factory applied finish.
Maximum Working Pressure:
175 psi (12,1 bar)
Discharge Coefficient:
K=4.2 GPM/psi1/2 (60,5 LPM/bar1/2)
Temperature Rating:
160°F/71°C Sprinkler with
139°F/59°C Cover Plate
Vertical Adjustment:
1/2 inch (12,7 mm)
Finishes:
Refer to Ordering Procedure section.
Physical Characteristics:
Body..................... Brass
Cap..................... Bronze
Saddle ................... Brass
Sealing Assembly. . . . . . . . . . . . . . . .
. . . . . . . . .Beryllium Nickel w/ Teflon†
Soldered Link Halves . . . . . . . . Nickel
Lever.................... Bronze
Compression Screw. . . . . . . . . Brass
Deflector.................Copper
Guide Pin Housing . . . . . . . . . Bronze
Guide Pins . . . . . . . . . Stainless Steel
Support Cup . . . . . . . . . . . . . . . Steel
Cover Plate . . . . . . . . . . . . . . Copper
Retainer .................. Brass
Cover Plate Ejection Spring . . . . . . . .
. . . . . . . . . . . . . . . . . . Stainless Steel
†DuPont Registered Trademark
Operation
When exposed to heat from a fire, the
Cover Plate, which is normally sol-
dered to the Support Cup at three
points, falls away to expose the Sprin-
kler Assembly. At this point the De-
flector supported by the Arms drops
down to its operated position. The fus-
ible link of the Sprinkler Assembly is
comprised of two link halves that are
soldered together with a thin layer of
solder. When the rated temperature is
reached, the solder melts and the two
link halves separate allowing the sprin-
kler to activate and flow water.
Design Criteria
The TycoTyco®Rapid Response™ Series
LFII (TY2596) Residential Concealed
Pendent Sprinklers are UL and C-UL
Listed for installation in accordance
with the following criteria.
Note: When conditions exist that are
outside the scope of the provided cri-
teria, refer to the Residential Sprinkler
Design Guide TFP490 for the manu-
facturer's recommendations that may
be acceptable to the Authority Having
Jurisdiction.
System Type. Only wet pipe systems
may be utilized.
Hydraulic Design. The minimum re-
quired sprinkler flow rate for systems
designed to NFPA 13D or NFPA 13R
are given in Table A as a function of
temperature rating and the maximum
allowable coverage areas. The sprin-
kler flow rate is the minimum required
discharge from each of the total num-
ber of “design sprinklers” as specified
in NFPA 13D or NFPA 13R.
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 flow rates given in Table A for
NFPA 13D and 13R as a function of
temperature rating and the maximum
allowable coverage area.
• A minimum discharge of 0.1 gpm/
sq. ft. over the “design area” com-
prised of the four most hydraulically
demanding sprinklers for the actual
coverage areas being protected by
the four sprinklers.
Obstruction To Water Distribution.
Locations of sprinklers are to be in ac-
cordance with the obstruction rules of
NFPA 13 for residential sprinklers.
(a) For coverage area dimensions less than or between those indicated, it is necessary to use the minimum required flow for the next
highest coverage area for which hydraulic design criteria are stated.
(b) Requirement is based on minimum flow in GPM (LPM) from each sprinkler. The associated residual pressures are calculated using
the nominal K-factor. Refer to Hydraulic Design Criteria Section for details.
TABLE A
NFPA 13D AND NFPA 13R WET PIPE HYDRAULIC DESIGN CRITERIA
FOR THE SERIES LFII (TY2596) RESIDENTIAL CONCEALED PENDENT SPRINKLER
Maximum
Coverage
Area(a)
Ft. x Ft.
(m x m)
Maximum
Spacing
Ft. (m)
Minimum Flow(b) and
Residual Pressure
For Horizontal Ceiling
(Max. 2 Inch Rise
for 12 Inch Run)
Minimum Flow(b) and
Residual Pressure
For Sloped Ceiling
(Greater Than 2 Inch
Rise Up To
Max. 4 Inch Rise
for 12 Inch Run)
Minimum Flow(b) and
Residual Pressure
For Sloped Ceiling
(Greater Than 4 Inch
Rise Up To
Max. 8 Inch Rise
for 12 Inch Run)
160°F/71°C
Sprinkler
160°F/71°C
Sprinkler
160°F/71°C
Sprinkler
12 x 12
(3,7 x 3,7)
12
(3,7)
13 GPM (49,2 LPM)
9.6 psi (0,66 bar)
18 GPM (68,1 LPM)
18.4 psi (1,27 bar)
18 GPM (68,1 LPM)
18.4 psi (1,27 bar)
14 x 14
(4,3 x 4,3)
14
(4,3)
14 GPM (53,0 LPM)
11.1 psi (0,77 bar)
18 GPM (68,1 LPM)
18.4 psi (1,27 bar)
18 GPM (68,1 LPM)
18.4 psi (1,27 bar)
16 x 16
(4,9 x 4,9)
16
(4,9)
16 GPM (60,6 LPM)
14.5 psi (1,00 bar)
18 GPM (68,1 LPM)
18.4 psi (1,27 bar)
18 GPM (68,1 LPM)
18.4 psi (1,27 bar)
18 x 18
(5,5 x 5,5)
18
(5,5)
20 GPM (75,7 LPM)
22.7 psi (1,57 bar)
20 GPM (75,7 LPM)
22.7 psi (1,57 bar) N/A
20 x 20
(6,1 x 6,1)
20
(6,1)
24 GPM (90,8 LPM)
32.7 psi (2,25 bar)
26 GPM (98,4 LPM)
38.3 psi (2,64 bar) N/A
Page 2 of 6 TFP440

Operational Sensitivity. The sprin-
klers are to be installed relative to the
ceiling mounting surface as shown in
Figure 3.
Sprinkler Spacing. The minimum
spacing between sprinklers is 8 feet
(2,4 m). The maximum spacing be-
tween sprinklers cannot exceed the
length of the coverage area (Ref. Table
A) being hydraulically calculated (e.g.,
maximum 12 feet for a 12 ft. x 12 ft.
coverage area, or 20 feet for a 20 ft. x
20 ft. coverage area).
The Series LFII must not be used in
applications where the air pressure
above the ceiling is greater than
that below. Down drafts through
the Support Cup could delay sprin-
kler operation in a fire situation.
FIGURE 3
SERIES LFII (TY2596) RESIDENTIAL CONCEALED PENDENT SPRINKLER
INSTALLATION DIMENSIONS / PROTECTIVE CAP / ACTIVATED DEFLECTOR
FIGURE 2
W-TYPE 18
SPRINKLER WRENCH
FIGURE 1
SERIES LFII (TY2596) RESIDENTIAL
CONCEALED PENDENT SPRINKLER
SPRINKLER/SUPPORT CUP
COVER PLATE/RETAINER
ASSEMBLY
ASSEMBLY PLATE
COVER
EJECTION
SPRING
DIMPLES
WITH THREAD
RETAINER
ASSEMBLY
SEALING
COMPRESSION
SCREW
POSITION)
(OPERATED
DEFLECTOR
FLUSH WITH
SURFACE IS
SUPPORT CUP
UNTIL MOUNTING
THREAD INTO
SOLDER
TAB
CEILING
DEFLECTOR
CAP
(1/2" NPT)
BODY
AREA
WRENCHING
SPRINKLER
SADDLE
ROLL FORMED
THREADS
CUP WITH
SUPPORT
ELEMENT
SOLDER LINK
LEVER
GUIDE
PIN
HOUSING
GUIDE PIN
RECESS
WRENCH
WITH SPRINKLER
ENGAGEMENT
IN TO ENSURE
WRENCHING AREA
PUSH WRENCH
(81,0 mm)
3-3/16" DIA.
1/2"
NPT
(63,5 mm)
2-1/2" DIA.
MOUNTING
SURFACE
(4,8 mm)
3/16"
1/8" GAP
(3,2 mm)
FITTING
SPRINKLER
FACE OF
1/2" (12,7 mm)
1" (25,4 mm)
TIP OPERATED POSITION
DEFLECTOR IN
1/2" (12,7 mm)
ADJUSTMENT
THREADED
SPRINKLER-
SUPPORT CUP
ASSEMBLY
OPERATED
SPRINKLER
1-15/16"±1/4"
±6,4 mm)
(49,2 mm
SPRINKLER-
SUPPORT CUP
ASSEMBLYASSEMBLY
COVER-
RETAINER
COVER
PLATE
RETAINER
DISPOSABLE
PROTECTIVE CAP
TFP440 Page 3 of 6

Installation
The Series LFII (TY2596) must be
installed in accordance with the
following instructions:
NOTICE
Damage to the fusible Link Assembly
during installation can be avoided by
handling the sprinkler by the support
cup only (i.e., do not apply pressure to
the fusible link Assembly).
A 1/2 inch NPT sprinkler joint should
be obtained with a minimum to max-
imum torque of 7 to 14 ft.lbs. (9,5 to
19,0 Nm). Higher levels of torque may
distort the sprinkler inlet with conse-
quent leakage or impairment of the
sprinkler.
Do not attempt to compensate for in-
sufficient adjustment in the Cover
Plate/Retainer Assembly by under-or
over-tightening the Sprinkler. Read-
just the position of the sprinkler fitting
to suit.
Step 1. The sprinkler must only be
installed in the pendent position and
with the centerline of the sprinkler
perpendicular to the mounting
surface.
Step 2. Remove the Protective Cap.
Step 3. With pipe thread sealant
applied to the pipe threads, and using
the W-Type 18 Wrench shown in Figure
2, install and tighten the Sprinkler/
Support Cup Assembly into the fitting.
The W-Type 18 Wrench will accept a
1/2 inch ratchet drive.
Step 4. Replace the Protective Cap
by pushing it upwards until it bottoms
out against the Support Cup. The
Protective Cap helps prevent damage
to the Deflector and Guide Pins during
ceiling installation and/or during
application of the finish coating of the
ceiling. It may also be used to locate
the center of the clearance hole by
gently pushing the ceiling material
against the center point of the Cap.
NOTICE
As long as the protective Cap remains
in place, the system is considered to
be “Out Of Service”.
Step 5. After the ceiling has been
completed with the 2-1/2 inch (63 mm)
diameter clearance hole and in prep-
aration for installing the Cover Plate
Assembly, remove and discard the
Protective Cap, and verify that the De-
flector moves up and down freely.
If the Sprinkler has been damaged and
the Deflector does not move up and
down freely, replace the entire Sprin-
kler assembly. Do not attempt to mod-
ify or repair a damaged sprinkler.
Step 6. Screw on the Cover Plate As-
sembly until its flange comes in con-
tact with the ceiling.
Do not continue to screw on the Cover
Plate Assembly such that it lifts a ceil-
ing panel out of its normal position.
If the Cover Plate Assembly cannot
be engaged with the Mounting Cup
or the Cover Plate Assembly cannot
be engaged sufficiently to contact the
ceiling, the Sprinkler Fitting must be
repositioned.
Care and
Maintenance
The TycoTyco®Rapid Response™ Series
LFII (TY2596) must be maintained
and serviced in accordance with the
following instructions:
NOTICE
Absence of a Cover Plate may delay the
sprinkler operation in a fire situation.
When properly installed, there is a
nominal 1/8 inch (3,2 mm) air gap be-
tween the lip of the Cover Plate and
the ceiling, as shown in Figure 3. This
air gap is necessary for proper oper-
ation of the sprinkler by allowing heat
flow from a fire to pass below and
above the Cover Plate to help assure
appropriate release of the Cover Plate
in a fire situation. If the ceiling is to be
repainted after the installation of the
Sprinkler, care must be exercised to
ensure that the new paint does NOT
seal off any of the air gap.
Factory painted Cover Plates MUST
NOT be repainted. They should be re-
placed, if necessary, by factory paint-
ed units. Non-factory applied paint
may adversely delay or prevent sprin-
kler operation in the event of a fire.
Do not pull the Cover Plate relative to
the Enclosure. Separation may result.
Before closing a fire protection system
main control valve for maintenance
work on the fire protection system
which it controls, permission to shut
down the affected fire protection sys-
tem must be obtained from the prop-
er authorities and all personnel who
may be affected by this action must be
notified.
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. Modi-
fied or over heated sprinklers must be
replaced.
Care must be exercised to avoid dam-
age -before, during, and after installa-
tion. Sprinklers damaged by dropping,
striking, wrench twist/slippage, or the
like, must be replaced.
The owner is responsible for the in-
spection, testing, and maintenance of
their fire 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.
NOTICE
The owner must assure that the sprin-
klers are not used for hanging of any
objects and that the sprinklers are only
cleaned by means of gently dusting
with a feather duster; otherwise, non-
operation in the event of a fire or inad-
vertent operation may result.
Automatic sprinkler systems should be
inspected, tested, and maintained by a
qualified Inspection Service in accor-
dance with local requirements and/or
national codes.
Page 4 of 6 TFP440

Limited
Warranty
Products manufactured by Tyco Fire
& Building Products (TFBP) are war-
ranted solely to the original Buyer for
ten (10) years against defects in mate-
rial and workmanship when paid for
and properly installed and maintained
under normal use and service. This
warranty will expire ten (10) years from
date of shipment by TFBP. No warran-
ty is given for products or components
manufactured by companies not af-
filiated by ownership with TFBP or for
products and components which have
been subject to misuse, improper in-
stallation, corrosion, or which have not
been installed, maintained, modified or
repaired in accordance with applicable
Standards of the National Fire Protec-
tion Association, and/or the standards
of any other Authorities Having Juris-
diction. Materials found by TFBP to be
defective shall be either repaired or re-
placed, at TFBP’s sole option. TFBP
neither assumes, nor authorizes any
person to assume for it, any other ob-
ligation in connection with the sale of
products or parts of products. TFBP
shall not be responsible for sprinkler
system design errors or inaccurate or
incomplete information supplied by
Buyer or Buyer’s representatives.
In no event shall TFBP be liable, in
contract, tort, strict liability or under
any other legal theory, for incidental,
indirect, special or consequential dam-
ages, including but not limited to labor
charges, regardless of whether TFBP
was informed about the possibility of
such damages, and in no event shall
TFBP’s liability exceed an amount
equal to the sales price.
The foregoing warranty is made in lieu
of any and all other warranties, ex-
press or implied, including warranties
of merchantability and fitness for a
particular purpose.
This limited warranty sets forth the ex-
clusive remedy for claims based on
failure of or defect in products, materi-
als or components, whether the claim
is made in contract, tort, strict liability
or any other legal theory.
This warranty will apply to the full ex-
tent permitted by law. The invalidity,
in whole or part, of any portion of this
warranty will not affect the remainder.
Ordering
Procedure
When placing an order, indicate the
full product name. Contact your local
distributor for availability.
Sprinkler Assembly:
Series LFII (TY2596), K=4.2, Resi-
dential Concealed Pendent Sprin-
kler without Cover Plate Assembly,
P/N 51-122-1-160.
Cover Plate Assembly:
Cover Plate Assembly having a (spec-
ify) finish for the Series LFII (TY2596),
K=4.2, Residential Concealed Pendent
Sprinkler, P/N (specify).
Chrome . . . . . . . . . . . . . . . . . . . . P/N 56-122-9-135
Signal White (a)
(RAL 9003). . . . . . . . . . . . . . . . P/N 56-122-4-135
Pure White (b)
(RAL 9010). . . . . . . . . . . . . . . . P/N 56-122-3-135
Custom . . . . . . . . . . . . . . . . . . . P/N 56-122-X-135
(a) Previously known as Bright White.
(b) Eastern Hemisphere sales only.
Sprinkler Wrench:
Specify: W-Type 18 Sprinkler Wrench,
P/N 56-000-1-265.
TFP440 Page 5 of 6

Page 6 of 6 TFP440
© 2008 TYCO FIRE & BUILDING PRODUCTS , 451 North Cannon Avenue, Lansdale, Pennsylvania 19446