CENTRAL ELO-231 User manual

ELO-231SA
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
ELO-231
Specific Application
.6 Density/2,000 sq. ft.
No. 2-9.2
• Flexibility for spec-occupancies by allowing
palletized or rack storage of Class I through
IV commodities and Group A plastics up to
20' (see application chart on page 2). This
provides owners and tenants great
flexibility in allowable storage arrange-
ments, heights and commodities.
The low end head pressures of the 11.4
K-factor, combined with the increase of
pressure available by reduced area, results in
the ability to:
• Reduce Pipe Size
• Increase Spacing
• Eliminate Booster Pumps
• Upgrade Existing Densities
ELO-231
.64 Orifice
Automatic
Sprinkler
I
M A
O P T
1-97
The Central Model ELO-231 Automatic
Sprinkler is an Extra Large Orifice Sprinkler
that has been proven for storage occupancies
by full-scale fire testing at Factory Mutual and
designed to control high challenge fires in
storage occupancies with relatively low
required operating pressures. The
ELO-231 x 1⁄2" is now available in a glass bulb
design, as well as the traditional center strut
design. It is available in the standard 3⁄4"
thread in upright and pendent, and for retrofit
use a 1⁄2" thread is available for upright only.
Through additional full-scale fire tests at
Factory Mutual, the ELO-231 has been U.L.
Listed and Factory Mutual Approved to
reduce the required remote area for Class I
through IV commodities and Group A Plastics
(see table) to 2,000 sq. ft. This represents up
to a 50% decrease in area when using
Central's ELO-231 sprinkler. Never has a 5⁄8"
orifice standard spray sprinkler received such
recognition for its performance in full-scale fire
testing.
The decrease in remote area, results in a
dramatic reduction of the required water flow
demand. This, combined with the low
operating pressure requirements, results in:
• The ability to store higher when compared
to 1⁄2" and 17⁄32" standard spray sprinklers at
the same flow demand. This is because
standard spray sprinklers require higher
water flow demands to protect the same
height of storage.
• More water pressure is made available by
reducing the overall water demand of the
system. For example, a .6/4000 sq. ft.
demand of NFPA 231C would normally
require a minimum of 2,400 GPM. The
ELO-231 reduces this area to a .6/2,000 sq.
ft. demand or 1,200 GPM. The available
water pressure is higher at 1,200 GPM than
at 2,400 GPM. Therefore, there is higher
available pressure for use in hydraulic
calculations.
Model: ELO-231 or ELO-231 x 1⁄2"
Style: Upright or Pendent (pendent
not available in
1
⁄ 2 " thread)
Orifice Size: 0.64" (16.3 mm) (E.L.O.)
K-Factor: 11.4 (163.02) Nominal
Thread: 3⁄4" (19.1 mm) or 1⁄2" (12.7 mm) N.P.T.
Temperature and Color:
Glass Bulb Center Strut
155°F/68°C - Red 165°F/74°C - Uncolored
200°F/93°C - Green 212°F/100°C - White
286°F/141°C - Blue 286°F/141°C - Blue
Approvals: U.L., U.L.C, F.M.,
*MEA (127-93-E) (See chart on
page 3 for specific temperatures
and finishes.)
* MEA Approved for 165 ° F & 286 ° F center strut
upright only.
Minimum Operating Pressure:
*10 PSI (68.95 kpa)
Maximum Working Pressure:
175 psi (12.07 bar)
Factory Hydro Test: 100% at 500 psi (34.48 bar)
Standard Finish: brass, chrome
Corrosion Resistant Coatings: See Page 3.
Length: 33⁄16" (8.1 cm)
Width: 13⁄4" (4.5 cm)
Weight: 4.8 oz. (136 grams)
Head Guard: G-2 (U.L. Listed for Upright only
& F.M. Approved for Upright &
Pendent)
Technical
Data
* NFPA 231, 231C and 231D applications require 10
psi; 7 psi can be used for NFPA 13 applications.
Product
Description
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2
NOTE: The ELO-231 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 ELO-231 for reduced area specific application. For standard applications, see the ELO-231
data sheet not this specific application data sheet.
For projects requiring Factory Mutual Guidelines, consult the Factory Mutual Loss Prevention Data Sheets. Some of their
requirements are different.
Temperature Rating: 165°F, 212°F, and 286°F.
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. This flow is then
used in the formula: pressure = (flow/K-factor)2to determine
the minimum end head pressure. At least 10 psi must be
used, even if the calculated pressure is less.
Design Area: For wet systems 2000 square feet and for dry
systems use the 30% increase for a total of
2600 square feet.
Spacing: NFPA criteria for standard spray sprinklers.
Maximum spacing is 100 square feet. Minimum
spacing is 6' 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'
Clearance: 36" minimum from deflector to top of storage.
Max. Ceiling Height in Area of Storage: 25'
Construction Type: All types - deflector distances per NFPA 13.
System Type: Wet or dry
Sprinkler Data: K-Factor 11.4
Orifice 0.64"
Thread Size 3⁄4" or 1⁄2" (upright only)
Always consult the appropriate Factory Mutual data sheets if Factory Mutual Guidelines Apply.
Figure 1
ELO-231 S. A. Upright Sprinkler
3 3/16"
ELO .64
1 3/4" Diameter
ELO-231 Specific Application Guidelines
Figure 2
ELO-231 S. A. Pendent Sprinkler
ELO .64
3 3/16"
1 1/4" Diameter
Design
Data
The Model ELO-231 Extra Large Orifice
Sprinkler is Listed for standard sprinkler
placement and standard flow and
pressure requirements as specified in
NFPA 13, 231, 231C and 231D.
The ELO-231 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 ELO-231
Sprinklers for NFPA applications:
1. Minimum sprinkler spacing is 6
feet.
2. Maximum coverage area is 100
sq. ft.
3. Automatic sprinkler systems must
be hydraulically calculated using
the area/density curves of NFPA
Standards.
4. Minimum sprinkler discharge
pressure is 10 psi (36 gpm) for
NFPA 231, 231C and 231D
applications and 7 psi for NFPA
13 applications.
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3 3/16"
ELO .64
1 3/4"
Figure 3
ELO-231 S.A. GB Upright Sprinkler Figure 4
ELO-231 S.A. GB Pendent Sprinkler
ELO .64
3 3/16"
1 1/4"
5. 1⁄2" thread must only be used on
retrofit applications.
Factory Mutual's Loss Prevention
Data Sheets contain the requirements
for designs that differ from NFPA.
Product
Description
The Model ELO-231 x 1⁄2" Sprinkler
incorporates the “center-strut” actuating
assembly or a glass bulb heat responsive
element.
Center Strut Operation: A fusible alloy
is sealed into a bronze center strut by a
stainless steel ball. When the alloy melts
at its rated temperature, the ball is forced
upward into the center strut, releasing the
two ejectors and operating the sprinkler.
Unlike most other sprinkler designs, the
alloy is not exposed to atmospheric
conditions that could affect its proper
functioning. It is also less susceptible to
mechanical damage since there are no
protruding elements, extending beyond
the sprinkler frame.
Glass Bulb Operation: The Model ELO-
231 now incorporates the latest in heat
responsive glass bulb technology. The
operating mechanism consists of a liquid-
filled 5mm diameter frangible capsule that
is only 2.0 cm in length. The glass bulb
capsule operating mechanism contains a
heat sensitive liquid that expands upon
application of heat. At the rated tempera-
ture, the frangible capsule ruptures
thereby releasing the orifice seal, thus
operating the sprinkler.
Installation
All Central Model ELO-231 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.
Finish Wax Over
Brass Chrome White Wax Lead Lead
ELO-231 (strut) x x x x x
SSU
165°, 212°, 286°
ELO-231 (strut) xx
SSU
165°, 212°, 286°
ELO-231 (GB) x x ‡x *x x *x
SSU & SSP
155°, 200°, 286°
FM Approvals
‡ Upright only.
* Available upon special request.
UL & ULC Listings Finish Wax Over
Brass Chrome White Wax Lead Lead
ELO-231 (strut) x x x x x
SSU & SSP
165°, 212°, 286°
ELO-231 (GB) xxx
SSU & SSP
155°, 200°, 286°
Note: White, wax, lead and wax-over-lead are UL Listed as corrosion resistant.
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ELO-231SA.3
©1997 Central Sprinkler Company
Printed in U.S.A.
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 accessibility,
ambient atmosphere, water supply, and
site activity.
Do not attempt to reassemble or
otherwise reuse a sprinkler that has
operated. Replace any sprinkler exhibiting
corrosion or damage; always use new
sprinklers of the same type and tempera-
ture rating as replacements.
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. Sprin-
klers that did not operate but were
subjected to corrosive elements of
combustion or excessive temperatures
should be inspected, and replaced if
need be. The Authority Having Jurisdic-
tion will detail minimum replacement
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.
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.
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 Central ELO Sprinkler
Wrench, to tighten the unit into the fitting.
A leak-tight joint requires only 7 to 14 ft.-
lbs. of torque; a tangential force of 14 to
28 lbs. delivered through a 6" handle will
deliver adequate torque. Torque levels
over 21 ft.-lbs. 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.
Central Sprinkler Company
451 N. Cannon Avenue, Lansdale, PA 19446
Phone [phone]
FAX [phone]
Ordering Information: When placing an
order, indicate the full product name.
Please specify the quantity, model, style,
orifice size, temperature rating, type of
finish or coating, and sprinkler wrench.
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.
OPTIMA™ is a registered trademark of
Central Sprinkler Company.
Ordering
Information
Care &
Maintenance
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. Sprinklers
should never be painted, coated, plated,
or altered in any other way from manufac-
tured condition or they may not function
properly. Any sprinklers altered in such
manner must be replaced.
ELO/ESLO/ESFR Combination
Wrench (Part #1073)
OBSOLETE