Tyco Fire Product CENTRAL K17-231 User manual

1
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
K17-231
No. 3-5.0
3-98
The Central Model K17-231TM Auto-
matic Sprinkler has been tested and
listed for storage occupancies. Full-scale
fire testing of high challenge fires in
storage occupancies using low required
operating pressures was conducted and
was successful.
The fire tests results show pressures as
low as 7 psi (0.5 bar) can be used with the
Central K17-231TM. This results in very
low pressure requirements that can save
cost by reducing branch line sizes,
increasing the spacing, eliminating
booster pumps, and upgrading existing
densities.
The Model K17-231TM is used with the
area density curves of NFPA 231and
231C. It is essentially a Standard Spray
Sprinkler with a 17.5 (252.4 metric) K-
Factor. The larger K-Factor allows the
pressure to be reduced when compared
to ELO, LO, or standard orifice sprin-
klers. This reduction in pressure results
in cost savings on the overall system.
The K17-231
TM
differs from the ULTRA
TM
K-17
TM
by its brass deflector, the markings
on the deflector, and the K-Factor.
Product
Description
K17-231 SA
Technical
Data
Model: K17-231TM
Style: Upright, Pendent
Orifice Size: .775 (19.7 mm)
K-Factor: 17.5 (252.4 metric)
Thread: 3⁄4" (20 mm) N.P.T.
Temp. Rating
Glass Bulb
155°F/68°C - Red (FM only)
200°F/93°C - Green
286°F/141°C - Blue
Approvals: UL, cUL, FM *
*Upright Only
Maximum Working Pressure:
175 psi (12.1 bar)
Factory Hydro Test: 100% at 500 psi (34.5 bar)
Standard Finish: brass
Patent: Pending
Standard
Spray
Automatic
Sprinkler
TM
Design
Data
The Model K17-231TM Sprinkler is Listed
for standard sprinkler placement as specified
in NFPA 13, 231, 231C, and 231D.
The K17-231
TM
is not Listed for use as
a “large drop” sprinkler nor as an
“ESFR” sprinkler.
The following parameters must be
incorporated into the design of automatic
sprinkler systems utilizing Model K17-231TM
Sprinklers for NFPA applications:
1. Minimum sprinkler spacing is 6 feet
(1.8 m) .
2. Maximum coverage area is 100 sq. ft.
(9.3 m
2
)
3. Automatic sprinkler systems must
be hydraulically calculated.
4. To use the Specific Application
Listing, the design must follow the
Specific Application Guidelines on
page 2.
Specific Application
25'-0"
(7.6 m) Building with
20'-0"
(6.1 m) Storage
No In-rack Sprinkler Required
Standard U.L. FM*
NFPA 13 Yes Yes
NFPA 231 Yes Yes
NFPA 231C Yes Yes
NFPA 231D Yes Yes
Approval Guide
*Upright Only
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Temperature Rating: 200°F/93°C.
Hydraulic Design Criteria: End head flow to be
determined based on the spacing of the sprinkler,
per NFPA spacing criteria for standard spray
sprinklers (see section 4-2.2.1), multiplied by the
density of .6 gpm per sq. ft. (24.4 lpm/m
2
) . This flow is
then used in the formula: pressure = (flow/K-factor)2
to determine the minimum end head pressure. At
least 7 psi
(0.5 bar) must be used, even if the
calculated pressure is less.
Design Area: For wet systems 2000 square feet
(186 m
2
) and for dry systems use the
30% increase for a total of 2600
square feet (241.8 m
2
) .
Spacing: NFPA criteria for standard spray
sprinklers. Maximum spacing is 100
square feet (9.3 m
2
) . Minimum spacing is
6' (1.8 m) apart unless separated by
baffles.
Obstructions: NFPA criteria for standard spray
sprinklers.
Type of Storage: Single, double, multiple-row and
portable rack storage and solid
piled or palletizied storage.
Commodity: Class I-IV, encapsulated or non-
encapsulated. Group A and B
plastics - cartoned, expanded or
unexpanded as well as exposed,
unexpanded.
Maximum Storage Height: 20' (6.1 m)
Clearance: 36" (914.4 mm) minimum from deflector
to top of storage.
Max. Ceiling Height in Area of Storage: 25' (7.6 m)
Construction Type: All types - deflector distances
per NFPA 13.
System Type: Wet or dry
Sprinkler Data: K-Factor 17.5 (252.4 metric)
Orifice .775 (19.7 mm)
Thread Size 3⁄4" (20 mm)
K17-231TM Specific Application Guidelines
NOTE: The K17-231TM is a standard spray sprinkler for use with the area/density curves of the NFPA standards
and a specific application sprinkler for reduced area. The following guidelines are only for reduced area
applications. These guidelines do not apply if you are not using the K17-231TM for reduced area specific
application. For standard applications, see the K17-231TM data sheet.
Note: For projects requiring Factory Mutual Guidelines, consult the Factory Mutual Loss Prevention Data Sheets. Some of their
requirements are different.
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Installation
All Central Model K17-231TM sprinklers
must be installed according to current
NFPA Standards. Deviations from these
requirements and standards or any
alteration to the sprinkler itself will void
any warranty made by Central Sprinkler
Company. In addition, installation must
also meet local government provisions,
codes, and standards as applicable.
The system piping must be properly
sized to insure the minimum required flow
rate at the sprinkler. Check for the proper
model, style, orifice size, and temperature
rating prior to installation. Install sprin-
klers after the piping is in place to avoid
mechanical damage; replace any
damaged units.
Wet pipe systems must be protected
from freezing.
Upon completion of the installation, the
system must be tested per recognized
standards.
In the event of a thread leak, remove
the unit, apply new pipe joint compound
or tape, and reinstall.
Figure 1
K17-231TM Upright Sprinkler Figure 2 K17-231TM Pendent Sprinkler
Installation Sequence
Step 1. The unit must be installed in the
upright or pendent position.
Step 2. Use only a non-hardening pipe
joint compound or Teflon* tape. Apply
only to the male threads.
*Teflon is a trademark of the DuPont Corp.
Step 3. Hand tighten the sprinkler into
the fitting. Use a wrench to tighten the
unit into the fitting. A leak-tight joint
requires only 7 to 14 ft.-lbs. (9.5 to 19.0
Nm) of torque; a tangential force of 14 to
28 lbs. (62.3 to 124.5 N) delivered through
a 6" (150 mm) handle will deliver adequate
torque. Torque levels over 21 ft.-lbs. (28.6
Nm) may distort the orifice seal, resulting
in leakage.
The sprinkler shall, per NFPA, be
oriented so the frame arms are parallel
with the branch line pipe.
2 11/32"
(59.5 mm)
2 3/8"
(60.3 mm)
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K17-231TMSA.4
©1998 Central Sprinkler Company
Printed in U.S.A.
Sprinklers must be handled carefully.
They should not be transported or stored
where ambient temperature may exceed
100oF/38oC. For best results, store them
in a dry, cool location in the original
shipping package.
Do not install sprinklers that have been
dropped or visibly damaged, such as a
crack in a glass bulb or a loss of liquid
from the bulb. Sprinklers should never be
painted, coated, plated, or altered in any
other way from manufactured condition or
they may not function properly. Any
sprinklers altered in such manner must be
replaced.
The owner is responsible for the proper
operating condition of all fire protection
devices and accessories. The NFPA
Standard 25 entitled, “Inspection Testing
and Maintenance of Water-Based Fire
Protection Systems” , contains guidelines
and minimum maintenance requirements.
Furthermore, the local Authority Having
Jurisdiction may have additional regula-
tions and requirements for maintenance,
testing, and inspection that must be
obeyed.
It is advisable to have sprinkler systems
inspected regularly by a qualified inspec-
tion service. Length of time between
such inspections can vary due to accessi-
bility, ambient atmosphere, water supply,
and site activity.
Do not attempt to reassemble or
otherwise reuse a sprinkler that has
operated. Replace any sprinkler exhibit-
ing corrosion or damage; always use new
sprinklers of the same type and tempera-
ture rating as replacements.
Care &
Maintenance
Do not attempt to replace sprinklers
without first removing the fire protection
system from service. Be certain to secure
permission from all Authorities Having
Jurisdiction , and notify all personnel who
may be affected during system shutdown.
A fire watch during maintenance periods is
a recommended precaution.
To remove the system from service
mode, first refer to the system operating
guide and valve instruction. Drain the water
and relieve pressure in the pipes. Remove
the existing unit and install the replacement,
using only the special sprinkler wrench. Be
certain to match model, style, orifice, and
temperature rating.
A fire protection system that has been
shut off after an activation should be
returned to service immediately. Inspect
the entire system for damage and replace
or repair as necessary. Sprinklers that did
not operate but were subjected to corro-
sive elements of combustion or excessive
temperatures should be inspected, and
replaced if need be. The Authority Having
Jurisdiction will detail minimum replace-
ment requirements and regulations.
Guarantee: Central Sprinkler Company
will repair and/or replace any products
found to be defective in material or
workmanship within a period of one year
from the date of shipment. Please refer to
the current Price List for further details of
the warranty.
Ordering Information: When placing an
order, indicate the full product name.
Please specify the quantity, model, style,
orifice size, temperature rating, and type
of finish or coating.
Availability and Service: Central
sprinklers, valves, accessories, and other
products are available throughout the
U.S. and Canada, and internationally,
through a network of Central Sprinkler
distribution centers. You may write
directly to Central Sprinkler Company, or
call [phone] for the distributor
nearest you.
Patents: Patents are pending.
Conversion Table:
1 inch = 25.400 mm
1 foot = 0.3048 m
1 pound = 0.4536 kg
1 foot pound = 1.36 Nm
1 psi = 6.895 kpa
= 0.0689 bar
= 0.0703 kg/cm2
1 U.S. gallon = 3.785 dm3
= 3.785 liters
Conversions are approximate.
Ordering
Information
Central Sprinkler Company
451 North Cannon Avenue, Lansdale, PA 19446
PHONE [phone]
FAX [phone]
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