CENTRAL ELO LH User manual

5-97ELO LH
Technical
Data
Product
Description
The Central Model ELO LH Extra Large
Orifice Recessed Pendent and Pendent
Automatic Glass Bulb Sprinklers are
specifically designed for Extended Cover-
age/Light Hazard as defined by NFPA 13.
They are Listed as Quick Response, up to
18'x18' spacing, and as Standard Re-
sponse, above 18'x18' spacing. The ELO
LH is Listed for smooth flat horizontal
ceilings as are all Extended Coverage
Light Hazard Sprinklers.
The ELO LH provides the maximum in
design flexibility as it has a minimum
separation of only 11'-0" and is Listed for
flows and pressures associated with
16'x16', 18'x18' and 20'x20' spacing.
They are intended for use with hydrauli-
cally designed systems using the flows
and pressures as shown in this literature.
For the purpose of determining the correct
flow and pressure to use in the hydraulic
calculations, all spacing is rounded up to
the next higher category. For example,
17'-6"x15'-0" spacing would be calculated
at the Listed 18'x18' flow and pressure.
The advantage of the ELO LH is the
ability to cover large areas, up to 400
square feet, with pressures that compare
to 1⁄2" standard sprinklers spaced at their
maximum of 225 square feet. For ex-
ample, the ELO LH can cover 20'x20'
spacing or 400 square feet with less
pressure than is required with 1⁄2" sprin-
klers at 225 square feet. (12.3 vs. 16.1)
The Model ELO LH Sprinkler incorpo-
rates a specially designed deflector that
provides a much greater area of coverage
than standard commercial sprinklers.
The two (2) piece recessed escutcheon
assembly provides for 3⁄4" of field adjust-
ment.
Quick Response
Extended
Coverage Light
Hazard Recessed
Pendent and
Pendent
Sprinkler
Quick Response
Extended Coverage Light Hazard
Extra Large Orifice
Recessed Pendent and Pendent
Glass Bulb Automatic Sprinkler
ELO LH
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
No. 3-3.5
Model: ELO LH
Style: Recessed Pendent, Pendent
Escutcheon: Model ELO (2-piece)
Recessed
Escutcheon Part #'s:
850 - Brush Brass 853 -White
851 - Bright Chrome 848 - Off-White
852 - Bright Brass 849 - Black
Note: In the recessed position, only the
Model ELO (2-piece) Recessed Escutch-
eon may be used. Substitution of other
“recessed” escutcheons may impair the
operating sensitivity and distribution
pattern.
Wrench
Pendent: Part #1073
ELO/ELO/ESFR Combination
Recessed Pendent: Part #1092
ELO Offset
Orifice Size: 0.64" (16.3 mm) (ELO)
K-Factor: 11.4 (163.02)
Thread Size:3⁄4" N.P.T. (19.1 mm)
Temperature Rating:
155°F/68°C
200°F/93°C(Available as Standard Response Only)
250°F/121°C(Available as Standard Response Only)
Approvals: U.L., cUL
Maximum Working Pressure: 175 psi
Factory Hydro Test: 100% at 500 psi
Standard Finishes:
Sprinkler: brass or chrome plated
Decorative Finishes: white or black
painted
Escutcheon: brass, chrome plated,
white or black painted
Length: 2 3⁄4" (70 cm)
Width: 11⁄2" (3.80 cm)
Weight: 4.2 oz. (120 grams)
OBSOLETE

Installation Diagrams
ELO LH Extended Coverage Light Hazard Recessed Pendent
Note: Central's Model 65 or 401 escutcheon may be used. When using Central's Model 65
escutcheon, the face of the R.C. is to protrude 1/8" ±1/16" beyond the finished ceiling line.
Installation Diagrams
ELO LH Extended Coverage Light Hazard Pendent
Face of
Reducing
Coupling
Finished
Ceiling LIne
1" x 3/4" Reducing
Coupling
Model ELO (2-piece)
Recessed Escutcheon
3 1/4" Diameter
2 1/4" Dia. Min.
2 3/4" Dia. Max.
3/8" Min.
3/4" Nominal
1 1/8" Max.
2 3/4"
1 1/2" Dia.
OBSOLETE

Care &
Maintenance
Sprinklers must be handled care-
fully. They must not be transported
or stored where ambient temperature
may exceed 100°F/38°C. 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 must 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 addi-
tional regulations and requirements
for maintenance, testing, and inspec-
tion that must be obeyed.
It is advisable to have sprinkler
systems inspected regularly by a
qualified inspection 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 temperature rating as
replacements.
Because the discharge pattern is
critical to protection of life and
property, nothing should be hung or
attached to the sprinkler unit that
would disrupt the pattern. Such
obstructions must be removed. In the
event that construction has altered
the original configuration, the system
must be investigated and the protec-
tion level maintained.
Installation
The Model ELO LH incorporates
the latest in heat-responsive glass
bulb technology. The operating
mechanism consists of a 3 mm liquid-
filled frangible capsule that is only 2.0
cm in length.
Operation: The glass bulb capsule
operating mechanism contains a
heat-sensitive liquid that expands
upon application of heat. At the rated
temperature, the frangible capsule
ruptures, thereby releasing the orifice
seal. The sprinkler then discharges
water in a pre-designed spray pattern
to control the fire.
All Central Model ELO LH Re-
cessed Pendent and Pendent Auto-
matic Sprinklers must be installed
according to the current NFPA 13
Standard and these installation
instructions. 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
Caution: Minimum spacing between pendent and recessed
pendent sprinklers is 11'-0".
Maximum Minimum Design Minimum Design
Spacing Between Location From Flow per Sprinkler Pressure per Sprinkler
Sprinklers Any Wall (gpm) (psi)
*16 x 16 feet (256 sq. ft.) 8 feet 30.2 gpm 7 psi
*18 x 18 feet (324 sq. ft.) 9 feet 33.0 gpm 8.4 psi
**20 x 20 feet (400 sq. ft.) 10 feet 40.0 gpm 12.3 psi
Design Requirements — Light Hazard Extended Coverage Applications
Density .1 GPM/ft2- NFPA 13 All Editions
Temperature Rating 155°F/68°C,200°F/93°C,250°F/121°C Temperatures
Design
Data
sized to ensure the minimum required
flow rate at the sprinkler. Check for
the proper model, style, orifice size,
and temperature rating prior to
installation. Install sprinklers 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.
Installation Sequence
Step 1. For Pendent and Recessed
Pendent sprinklers, the face of the
sprinkler fitting should be installed a
nominal 3⁄4" (±3⁄8") behind the ceiling
line. Adjustments are made via the
push-on escutcheon.
Step 2. Use only a non-hardening
pipe joint compound or Teflon* tape.
Apply only to the male threads.
Step 3. Hand tighten the sprinkler
into the fitting. Use a Central
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.
*Teflon is a trademark of the DuPont Corp.
* Listed as Quick Response.
** Listed as Standard Response Only.
≠ Recessed Pendent Sprinkler is Listed as Standard Response Only.
OBSOLETE

©1997 Central Sprinkler Company
Printed in U.S.A. ELO LH.1DC
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 through-
out 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 (215) 362-
0700 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
Do not attempt to replace sprinklers
without first removing the fire protec-
tion system from service. Be certain
to secure permission from all authori-
ties having jurisdiction, and notify all
personnel who may be affected
during system shutdown. A fire
watch during maintenance periods is
a wise precaution.
To remove the system from service
mode, first refer to the system
operating guide and valve instruction.
Drain 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 immedi-
ately. 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 replacement require-
ments and regulations.
Guarantee: Central Sprinkler Com-
pany 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.
Central Sprinkler Company
451 North Cannon Avenue, Lansdale, PA 19446
PHONE [phone]
FAX [phone]
OBSOLETE