Reliable KFR-CCS User manual

Features
• cULus Listed for areas of coverage up to 256 square feet
• Fast response 212°F (100°C) fusible link operating element
Product Description
The Reliable Model KFR-CCS Combustible Concealed
Space Sprinkler is an upright, special sprinkler designed to
provide protection of specic light hazard combustible and
noncombustible concealed spaces requiring sprinkler protection.
The Model KFR-CCS Sprinkler utilizes a fast response solder-
link fusible element that has demonstrated response times in
laboratory tests which are ve to ten times faster than standard
response sprinklers. This feature enables the sprinkler to apply
water to a re much faster than standard response sprinklers of
the same temperature rating.
Application
The Model KFR-CCS sprinkler is specically listed for the
protection of horizontal combustible concealed spaces up to 36”
deep as described in NFPA 13 and as detailed in this bulletin.
In addition, the Model KFR-CCS sprinkler is specically listed for
the protection of horizontal combustible concealed spaces with
wood truss and bar joist construction up to and including 60”
(900 mm) deep.
Installation
Model KFR-CCS Sprinklers are to be installed in the upright
position with their frames arms parallel to the pipe. When
installing the Model KFR-CCS sprinkler use only the Reliable
Model W2 installation wrench. Usage of any other type of
installation wrench may damage the sprinkler and will void
the manufacturer’s warranty. Damaged sprinklers must be
immediately replaced. A leak tight ½” NPT (R1/2) sprinkler joint
can be obtained with an installation torque of approximately 8 -18
ft-lbs (10.8 – 24.4 N.m) after application of an appropriate thread
sealant. Do not tighten sprinklers over these recommended limits.
Doing so may cause leakage and/or premature operation.
www.reliablesprinkler.com
K-factor 5.6 (80); SIN RA4454
cULus Listed
Model KFR-CCS
Combustible Concealed Space Sprinkler
Bulletin 044 December 2022
Maintenance
Reliable Model KFR-CCS series sprinklers should be inspected
and the sprinkler system maintained in accordance with NFPA
25, as well as the requirements of any Authorities Having
Jurisdiction. Prior to installation, sprinklers should remain in the
original cartons and packaging until used. This will minimize the
potential for damage to sprinklers that could cause improper
operation or non-operation.
Do not clean sprinklers with soap and water, ammonia liquid or
any other cleaning fluids. Remove dust by gentle vacuuming
without touching the sprinkler.
Replace any sprinkler which has been painted (other than factory
applied). A stock of spare sprinklers should be maintained to
allow quick replacement of damaged or operated sprinklers.
Failure to properly maintain sprinklers may result in inadvertent
operation or non-operation during a re event.
Guarantee
For Reliable Automatic Sprinkler Co., Inc. guarantee, terms, and
conditions, visit www.reliablesprinkler.com.
Ordering Information
Specify: Model KFR-CCS Sprinkler
W2 Wrench
Model W2 Wrench

Model KFR-CCS Components and Installation Dimensions Figure 1
Technical Specications
Style: Upright
Threads: 1/2” NPT or ISO7-1R1/2
Nominal K-Factor: 5.6 (80 metric)
Max. Working Pressure: 175 psi (12 bar)
Material Specications
Thermal Sensor: Nickel Alloy
Sprinkler Frame: Brass Alloy
Button: Copper Alloy
Sealing Assembly: Nickel Alloy with PTFE
Load Screw: Bronze Alloy
Deflector: Bronze Alloy
Finish
Standard Brass
Temperature Ratings
212°F (100°C)
Sensitivity
Fast Response
Sprinkler Wrench
Model W2
Approvals
cULus Listed
Model KFR-CCS Combustible Concealed Space Upright Sprinkler SIN RA4454
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2 1/4"
(57 mm)
1-5/8"
(42 mm)
COMPONENTS DIMENSIONS
Deflector
Frame
Threads Wrench Flats
Cap & Seal
Fusible Link
Compression
Screw
044FIG01
Model KFR-CCS General Application Criteria
Minimum Distance (Spacing) Between Sprinklers: 6 ft (1.83 m)
Note: The minimum distance does not apply to any additional sprinklers that are required for protection of CPVC piping that is
offset over an obstruction.
Maximum Distance (Spacing) Between Sprinklers: (Refer to Figures 2 through 7)
Maximum Coverage Area Per Sprinkler: (Refer to Figures 2 through 7)
Deflector Distance: (Refer to Figures 2 through 7)
Minimum Distance Away From Face of Wood Truss or Top Chord of Bar Joist: 4-1/2 in. (114 mm)
Obstruction Rules:
1. Sprinklers may not be installed such that the deflector is above the bottom of the top chord of trusses or joists.
2. Gusset plates, truss members, or bar joist members (other than top chords) shall not be considered obstructions provided a min-
imum 4-1/2 in. (114 mm) lateral distance from the edge of the member to the centerline of the sprinkler (required by the specic
application listing) is maintained.
3. Where the Model KFR-CCS sprinkler is spaced over 225 ft2(20.9 m2), apply the obstruction rules found in NFPA 13 for extended
coverage sprinklers, except as noted in #2 above.
4. Where the Model KFR-CCS sprinkler is spaced 225 ft2(20.9 m2) or less, apply the obstruction rules found in NFPA 13 for standard
spray sprinklers, except as noted in #2 above.

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The Model KFR-CCS Sprinkler is specically listed to provide protection of combustible concealed spaces where (a) the construction
method consists of wood trusses or bar joists with top chord depth not exceeding 4 in. (100 mm), (b) the maximum depth of the space is
60 in. (1.5 m) as measured from bottom of deck to top of ceiling, and (c) the slope of the upper deck does not exceed 2 in 12.
The Model KFR-CCS Sprinkler is specically listed to provide protection of combustible concealed spaces where (a) the construction
method consists of wood trusses or bar joists with top chord depth exceeding 4 in. (100 mm), (b) the maximum depth of the space is 60
in. (1.5 m) as measured from bottom of deck to top of ceiling, and (c) the slope of the upper deck does not exceed 2 in 12.
The Model KFR-CCS Sprinkler is specically listed to provide protection of combustible concealed spaces where (a) the construction
method consists of solid or composite wood joists, (b) the depth of the space does not exceed 36 in. (900 mm) as measured from the
bottom of the upper joist to top of the bottom joist (or ceiling if joists are not present), and (c) the slope of the upper deck does not
exceed 2 in 12.
Unless modied by this technical data sheet, all guidelines provided by the CPVC pipe and tting manufacturer must be followed.
When using CPVC pipe and ttings, horizontal runs of pipe must be a maximum of 6 in. (150 mm) above the ceiling or noncombustible
ceiling insulation, or 1/3 the depth of concealed space (as measured from the top surface of the ceiling to the bottom of the deck above),
whichever is smaller.
Where the members at the bottom of the concealed space are greater than 6 in. (150 mm) tall, installing CPVC piping directly on top of
those members shall be permitted.
When using 1 in. (DN25) or larger pipe, a hanger must be located at the truss nearest a sprig for purposes of restraint. If using 3/4 in.
(DN19) piping, all sprigs over 12 in. (300 mm) must be laterally braced using methods described in the NFPA standards.
Where CPVC pipe must be offset up and over an obstruction, the CPVC pipe must be kept within 6 in. of the obstruction and additional
Model KFR-CCS Sprinklers are to be installed to protect the CPVC material.
A minimum lateral distance of 18 in. (460 mm) must be maintained between the CPVC pipe and heat pumps, fan motors, and heat
lamps.
CPVC piping can be used to supply the Model KFR-CCS Sprinklers as well as sprinklers installed below the ceiling.
Where provided or required, draft curtains shall be at least 1/3 the depth of the concealed space or 8 in. (200 mm), whichever is greater,
and shall be constructed using minimum 1/4 in. plywood or other material that will not allow heat to escape through or pass above the
draft curtain. Full height walls are acceptable substitutes for draft curtains.
System Types: Wet (CPVC or Steel Pipe); Dry or Preaction (Steel Pipe only)
Design Method: Density/Area per NFPA 13, except as modied herein
Hazard Classication: Light Hazard
Minimum Density: 0.10 gpm/ft2 (4.1 Lpm/m2)
Minimum Operating Pressure: 7 psi (0.48 bar)
Design Area: (Reference Figures 2 through 7)
Application Criteria for Unobstructed Wood Truss Construction
Application Criteria for Obstructed Wood Truss Construction
Application Criteria for Solid or Composite Wood Joist Construction
Special Requirements When Using CPVC Materials
Draft Curtain Requirements
General Hydraulic Design Requirements

UPPER
DECK
4-1/2 in. (114 mm) MINIMUM FROM
CENTERLINE OF SPRINKLER TO
FACE OF TOP CHORD OF WOOD
TRUSS OR BAR JOIST
OBSTRUCTION
CEILING
6 in. (150 mm)
MAXIMUM
WHEN OFFSETTING CPVC PIPE OVER AN
OBSTRUCTION, A CCS SPRINKLER MUST BE
INSTALLED DIRECTLY ON THE PIPE OVER THE
OBSTRUCTION. MAINTAIN 18 in. (460 mm)
CLEARANCE TO HEAT PUMPS, FAN MOTORS,
HEAT LAMPS, OR OTHER HEAT SOURCES.
SEE NOTE 2
INSTALLATION NOTES:
1. DISTANCE EVALUATED AS PART OF THE cULus LISTING: 12 in. TO 60 in. (300 mm TO 1500 mm). NFPA 13 PERMITS INSTALLATION OF THE
SPRINKLER WHERE THIS DISTANCE IS LESS THAN 12 in. (300 mm).
2. DEFLECTOR TO BE NO MORE THAN 2 in. (50 mm) MAXIMUM BELOW BOTTOM OF TOP CHORD. IN NO CASE SHALL DEFLECTOR BE
ABOVE THE BOTTOM OF THE TOP CHORD.
3. INSTALL SPRINKLER WITH FRAME ARMS PARALLEL TO PIPE.
PIPE SHALL BE LOCATED A MAXIMUM OF 6 in. (150 mm) ABOVE
THE TOP OF THE CEILING (OR INSULATION), OR A MAXIMUM OF
ONE-THIRD (1/3) THE DEPTH OF THE CONCEALED SPACE ABOVE
THE TOP OF THE CEILING, WHICHEVER IS SMALLER.
SEE NOTE 1
HYDRAULIC DESIGN AREA REQUIREMENTS
A. WET SYSTEM: WHERE DRAFT CURTAINS (OR FULL HEIGHT WALLS) ARE PROVIDED AT MAXIMUM AREAS OF 1000 ft
2
(93 m
2
) OR LESS,
CALCULATE ALL SPRINKLERS WITHIN THE COMPARTMENTED AREA.
B. WET SYSTEM: WHERE DRAFT CURTAINS (OR FULL HEIGHT WALLS) ARE NOT PROVIDED, OR PROVIDED AT AREAS EXCEEDING 1000 ft
2
(93
m
2
), CALCULATE AN AREA OF 1000 ft
2
(93 m
2
) OR SIX SPRINKLERS, WHICHEVER CREATES THE GREATER DEMAND.
C. ADDITIONAL SPRINKLERS THAT ARE REQUIRED FOR PROTECTION OF CPVC PIPING THAT IS OFFSET OVER AN OBSTRUCTION DO NOT
NEED TO BE INCLUDED IN THE DESIGN AREA.
NOTE 3
SPRINKLER SPACING AND COVERAGE AREA
A. 16 ft (4.9 m) MAXIMUM BETWEEN SPRINKLERS
B. 6 ft (1.8 m) MINIMUM BETWEEN SPRINKLERS (DOES NOT APPLY TO SPRINKLERS ADDED TO PROTECT CPVC PIPING OFFSET OVER AN
OBSTRUCTION)
C. 256 ft
2
(23.8 m
2
) MAXIMUM COVERAGE AREA PER SPRINKLER
6 in. (150 mm)
MAXIMUM
TOP CHORD DEPTH 4 in.
(100 mm) OR LESS
Figure 2
Unobstructed Wood Truss or Bar Joist, CPVC Pipe
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Draft Curtains: Optional

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UPPER
DECK
CEILING
TOP CHORD DEPTH 4 in.
(100 mm) OR LESS
SEE NOTE 1
LOCATION OF STEEL PIPE
IN CONCEALED SPACE IS
NOT RESTRICTED
SEE NOTE 2
INSTALLATION NOTES:
1. DISTANCE EVALUATED AS PART OF THE cULus LISTING: 12 in. TO 60 in. (300 mm TO 900 mm). NFPA 13 PERMITS INSTALLATION OF
THE SPRINKLER WHERE THIS DISTANCE IS LESS THAN 12 in. (300 mm).
2. DEFLECTOR TO BE NO MORE THAN 2 in. (50 mm) MAXIMUM BELOW BOTTOM OF TOP CHORD. IN NO CASE SHALL DEFLECTOR BE
ABOVE THE BOTTOM OF THE TOP CHORD.
3. INSTALL SPRINKLER WITH FRAME ARMS PARALLEL TO PIPE.
HYDRAULIC DESIGN AREA REQUIREMENTS
1. WET OR DRY SYSTEM: WHERE DRAFT CURTAINS (OR FULL HEIGHT WALLS) ARE PROVIDED AT MAXIMUM AREAS OF 1000 ft
2
(93 m
2
)
OR LESS, CALCULATE ALL SPRINKLERS WITHIN THE COMPARTMENTED AREA.
2. WET SYSTEM: WHERE DRAFT CURTAINS OR FULL HEIGHT WALLS ARE NOT PROVIDED, OR PROVIDED AT AREAS EXCEEDING 1000 ft
2
(93 m
2
), CALCULATE AN AREA OF 1000 ft
2
(93 m
2
) OR SIX SPRINKLERS, WHICHEVER CREATES THE GREATER DEMAND.
3. DRY SYSTEM: WHERE DRAFT CURTAINS OR FULL HEIGHT WALLS ARE NOT PROVIDED, OR PROVIDED AT AREAS EXCEEDING 1000 ft
2
(93 M
2
), CALCULATE AN AREA OF 1000 ft
2
(93 m
2
) OR NINE SPRINKLERS, WHICHEVER CREATES THE GREATER DEMAND.
4-1/2 in. (114 mm) MINIMUM FROM
CENTERLINE OF SPRINKLER TO
FACE OF TOP CHORD OF WOOD
TRUSS OR BAR JOIST
NOTE 3
SPRINKLER SPACING AND COVERAGE AREA
A. 16 ft (4.9 m) MAXIMUM BETWEEN SPRINKLERS
B. 6 ft (1.8 m) MINIMUM BETWEEN SPRINKLERS
C. 256 ft
2
(23.8 m
2
) MAXIMUM COVERAGE AREA PER SPRINKLER
Figure 3
Unobstructed Wood Truss or Bar Joist, Steel Pipe
Draft Curtains: Optional

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CEILING
FULL DEPTH BLOCKING OF SAME MATERIAL AS JOIST
(OR OTHER NONCOMBUSTIBLE MATERIAL).
MAXIMUM 32 ft (9.75 m) BETWEEN ROWS OF BLOCKING. UPPER
DECK
SEE NOTE 1
AND 1A
SEE NOTE 2
6 in. (150 mm) OR
1/3 DEPTH OF SPACE
(WHICHEVER IS GREATER)
MINIMUM 1/4 in. PLYWOOD
DRAFT CURTAIN AT MAXIMUM
31 ft (9.45 m) SPACING
LOCATION OF STEEL PIPE
IN CONCEALED SPACE IS
NOT RESTRICTED
4-1/2 in. (114 mm) MINIMUM FROM
CENTERLINE OF SPRINKLER TO
FACE OF WOOD TRUSS OR
TOP CHORD OF BAR JOIST
INSTALLATION NOTES:
1. DISTANCE EVALUATED AS PART OF THE cULus LISTING: 12 in. TO 60 in. (300 mm TO 1500 mm). NFPA 13 PERMITS INSTALLATION OF THE
SPRINKLER WHERE THIS DISTANCE IS LESS THAN 12 in. (300 mm).
1A. WHERE CEILING IS NOT SUPPORTED BY JOISTS (EXAMPLE: SUSPENDED A.C.T.) MEASUREMENT POINT IS TOP OF CEILING.
2. DEFLECTOR DISTANCE BELOW BOTTOM OF JOIST TO 1-1/2 in. TO 4 in. (38 mm TO 100 mm) BELOW BOTTOM OF TOP CHORD. IN NO
CASE SHALL DEFLECTOR BE ABOVE THE BOTTOM OF THE TOP CHORD.
3. INSTALL SPRINKLER WITH FRAME ARMS PARALLEL TO PIPE.
HYDRAULIC DESIGN AREA REQUIREMENTS
1. WET OR DRY SYSTEM: BLOCKING AND DRAFT CURTAINS (OR FULL HEIGHT WALLS) MUST BE PROVIDED AT 1000 ft2(93 m2) MAXIMUM AREAS.
CALCULATE ALL SPRINKLERS WITHIN THE COMPARTMENTED AREA.
NOTE 3
SPRINKLER SPACING AND COVERAGE AREA
A. 14 ft (4.3 m) MAXIMUM BETWEEN SPRINKLERS
B. 6 ft (1.8 m) MINIMUM BETWEEN SPRINKLERS
C. 196 ft2(18.2 m2) MAXIMUM COVERAGE AREA PER SPRINKLER
Figure 4
Obstructed Wood Truss or Bar Joist, Steel Pipe
Draft Curtain and Blocking: Required at 1000 Ft2(93 m2)

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6 in. [150 mm]
MAXIMUM
OBSTRUCTION
CEILING
NONCOMBUSTIBLE INSULATION, SECURED ABOVE
SPRINKLERS WITH WIRE NETTING OR EQUIVALENT
UPPER
DECK
SEE NOTE 2
PIPE SHALL BE LOCATED A MAXIMUM OF 6 in. (150 mm)
ABOVE THE TOP OF THE CEILING (OR INSULATION), OR
A MAXIMUM OF ONE-THIRD (1/3) THE DEPTH OF THE
CONCEALED SPACE ABOVE THE TOP OF THE CEILING,
WHICHEVER IS SMALLER.
SEE NOTE 1
WHEN OFFSETTING CPVC PIPE OVER
OBSTRUCTION, A CCS SPRINKLER MUST BE
INSTALLED DIRECTLY ON THE PIPE OVER THE
OBSTRUCTION.
INSTALLATION NOTES:
1. DISTANCE EVALUATED AS PART OF THE cULus LISTING: 12 in. TO 36 in. (300 mm TO 900 mm). NFPA 13 PERMITS INSTALLATION OF
THE SPRINKLER WHERE THIS DISTANCE IS LESS THAN 12 in. (300 mm).
2. DEFLECTOR DISTANCE BELOW BOTTOM OF JOIST TO 1-1/2 in. TO 4 in. (38 mm TO 100 mm) BELOW BOTTOM OF TOP CHORD. IN NO
CASE SHALL DEFLECTOR BE ABOVE THE BOTTOM OF THE SOLID OR COMPOSITE WOOD JOIST.
3. INSTALL SPRINKLER WITH FRAME ARMS PARALLEL TO PIPE.
NOTE 3
HYDRAULIC DESIGN AREA REQUIREMENTS
1. WET SYSTEM: DRAFT CURTAINS (OR FULL HEIGHT WALLS) MUST BE PROVIDED AT 1000 ft
2
(93 m
2
) MAXIMUM AREAS. CALCULATE
ALL SPRINKLERS WITHIN THE COMPARTMENTED AREA.
2. ADDITIONAL SPRINKLERS THAT ARE REQUIRED FOR PROTECTION OF CPVC PIPING THAT IS OFFSET OVER AN OBSTRUCTION DO
NOT NEED TO BE INCLUDED IN THE DESIGN AREA.
SPRINKLER SPACING AND COVERAGE AREA
A. 16 ft (4.9 m) MAXIMUM BETWEEN SPRINKLERS
B. 6 ft (1.8 m) MINIMUM BETWEEN SPRINKLERS
C. 256 ft
2
(23.4 m
2
) MAXIMUM COVERAGE AREA PER SPRINKLER
Figure 5
Solid Wood or Composite Wood Joist Filled with Non-Combustible Insulation, CPVC Pipe
Draft Curtains: Required at 1000 Ft2(93 m2)

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CEILING
FULL DEPTH BLOCKING OF SAME MATERIAL AS JOIST
(OR NONCOMBUSTIBLE MATERIAL). MAXIMUM 32 ft (9.75 m)
BETWEEN ROWS OF BLOCKING.
UPPER
DECK
SEE NOTE 1
AND 1A
SEE NOTE 2
6 in. (150 mm) OR
1/3 DEPTH OF SPACE
(WHICHEVER IS GREATER)
MINIMUM 1/4 in. PLYWOOD
DRAFT CURTAIN AT MAXIMUM
31 ft (9.45 m) SPACING
LOCATION OF STEEL PIPE
IN CONCEALED SPACE IS
NOT RESTRICTED
NOTE 3
INSTALLATION NOTES:
1. DISTANCE EVALUATED AS PART OF THE cULus LISTING: 12 in. TO 36 in. (300 mm TO 900 mm). NFPA 13 PERMITS INSTALLATION OF THE
SPRINKLER WHERE THIS DISTANCE IS LESS THAN 12 in. (300 mm).
1A. WHERE CEILING IS NOT SUPPORTED BY JOISTS (EXAMPLE: SUSPENDED A.C.T.) MEASUREMENT POINT IS TOP OF CEILING.
2. DEFLECTOR DISTANCE BELOW BOTTOM OF JOIST TO 1-1/2 in. TO 4 in. (38 mm TO 100 mm) BELOW BOTTOM OF TOP CHORD. IN NO
CASE SHALL DEFLECTOR BE ABOVE THE BOTTOM OF THE SOLID OR COMPOSITE WOOD JOIST.
3. INSTALL SPRINKLER WITH FRAME ARMS PARALLEL TO PIPE.
HYDRAULIC DESIGN AREA REQUIREMENTS
1. WET OR DRY SYSTEM: BLOCKING AND DRAFT CURTAINS (OR FULL HEIGHT WALLS) MUST BE PROVIDED AT 1000 ft
2
(93 m
2
)
MAXIMUM AREAS. CALCULATE ALL SPRINKLERS WITHIN THE COMPARTMENTED AREA.
SPRINKLER SPACING AND COVERAGE AREA
A. 14 ft (4.3 m) MAXIMUM BETWEEN SPRINKLERS
B. 6 ft (1.8 m) MINIMUM BETWEEN SPRINKLERS
C. 196 ft
2
(18.2 m
2
) MAXIMUM COVERAGE AREA PER SPRINKLER
12 in. (300 mm)
MAX JOIST
DEPTH
Figure 6
Solid Wood Joist (Non-Filled), Steel Pipe
Draft Curtain and Blocking: Required at 1000 Ft2(93 m2)

P/N 9999970449
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CEILING
UPPER
DECK
SEE NOTE 1
AND 1A
SEE NOTE 2
LOCATION OF STEEL PIPE IN
CONCEALED SPACE IS NOT
RESTRICTED
NONCOMBUSTIBLE INSULATION, SECURED ABOVE
SPRINKLERS WITH WIRE NETTING OR EQUIVALENT
NOTE 3
INSTALLATION NOTES:
1. DISTANCE EVALUATED AS PART OF THE cULus LISTING: 12 in. TO 36 in. (300 mm TO 900 mm). NFPA 13 PERMITS INSTALLATION OF THE
SPRINKLER WHERE THIS DISTANCE IS LESS THAN 12 in. (300 mm).
1A. WHERE CEILING IS NOT SUPPORTED BY JOISTS (EXAMPLE: SUSPENDED A.C.T.) MEASUREMENT POINT IS TOP OF CEILING.
2. DEFLECTOR DISTANCE BELOW BOTTOM OF JOIST TO 1-1/2 in. TO 4 in. (38 mm TO 100 mm) BELOW BOTTOM OF TOP CHORD. IN NO
CASE SHALL DEFLECTOR BE ABOVE THE BOTTOM OF THE SOLID OR COMPOSITE WOOD JOIST.
3. INSTALL SPRINKLER WITH FRAME ARMS PARALLEL TO PIPE.
HYDRAULIC DESIGN AREA REQUIREMENTS
1. WET OR DRY SYSTEM: BLOCKING AND DRAFT CURTAINS (OR FULL HEIGHT WALLS) ARE NOT REQUIRED. CALCULATE A MINIMUM
HYDRAULIC DESIGN AREA OF 1000 ft2(93 m2).
SPRINKLER SPACING AND COVERAGE AREA
A. 16 ft (4.9 m) MAXIMUM BETWEEN SPRINKLERS
B. 6 ft (1.8 m) MINIMUM BETWEEN SPRINKLERS
C. 256 ft2(23.4 m2) MAXIMUM COVERAGE AREA PER SPRINKLER
Figure 7
Solid Wood or Composite Wood Joist (Filled), Steel Pipe
Draft Curtain and Blocking: Not Required