Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
Product
Description
Quick Response Extended Coverage
Automatic Sprinkler
Central’s Model ELOC Sprinkler, the ELO
Optima™ Adjustable Concealed, is an
extra large orifice, quick response,
extended coverage, adjustable concealed
sprinkler. It provides significant advan-
tages in light hazard occupancies includ-
ing very low start pressures (only 5.2 psi
required at 16' x 16' spacing), almost 1" of
adjustment in a thread on cover plate and
a quick response listing up to 18' x 18'
spacing.
The Model ELOC covers 400 sq. ft. using
less pressure than a standard
1
⁄
2
" sprinkler
would use at 225 sq. ft. The Model ELOC
is the sprinkler of choice for any light
hazard ceiling application, especially
applications requiring the additional
aesthetics of a concealed sprinkler. This
combination of features allows the ELO
Optima™ Concealed Sprinkler to provide
the most cost effective method of installing
concealed sprinklers in a light hazard
occupancy.
By adding the option of the clean room
seal, the ELOC can be used in areas
where dust or air flow cannot be allowed
between the room and the area above the
ceiling. This option is used extensively in
“clean room” applications where the
integrity of the ceiling is critical. The clean
room seal is U.L. Listed for 16'x16' and
18'x18' spacings for standard response
only. It is NOT Listed for 20'x20'.
See
clean room seal data sheet for details.
Inherent in the design, is the capability to
compensate for ceiling heights which vary
with respect to the sprinkler system piping.
This significant feature allows the ELO
Optima™ Concealed to seat flush with
ceilings that can fluctuate over
3
⁄
4
" in
height. It’s 3
1
⁄
4
" diameter cover plate
presents an unobstructed and aestheti-
cally pleasing appearance. The thin cover
plate projects a mere
3
⁄
16
" below the ceiling.
Also, the ELO Optima™ Concealed comes
with a protective cap that protects it from
damage and paint with a special cone
shaped point that allows the ceiling to be
marked for exact hole location.
The ELO Optima™ Concealed Sprinkler
employs Central’s exclusive link activating
mechanism. The sprinkler is brass with it’s
cover plate available in brass, chrome
plated or white painted with special finishes
available.
Operation: The sprinkler absorbs heat
through it’s ceiling cover plate which is
soldered to the adjustable retainer ring with
a fusible alloy. At the rated temperature,
the alloy fuses, resulting in the plate
dropping away from the sprinkler. At this
point, the deflector drops down below the
ceiling surface, bringing about the link’s
exposure to the fire’s heat. The heat fuses
the link’s thermal element resulting in a
rapid expulsion of both the activating
mechanism, as well as the sealing cap.
Water can now flow in a pattern engineered
to meet the extended coverage require-
ments.
ELO Optima
™
Concealed
I M
A
O
P
T
.64 Orifice
Adjustable
Concealed
Light Hazard
Sprinkler
ELOC
No. 2-7.6
Temperature Ratings: See chart on
page 3
Maximum Working Pressure: 175 psi
Factory Hydro Test: 100% at 500 psi
Standard Finishes:
Sprinkler: brass
Cover Plate: brass, chrome plated or
white painted with
special painted finishes
available.
Length: 2
3
⁄
8
" to 3
1
⁄
4
"
(6 cm to 8.3 cm)
Cover Plate: 3
1
⁄
4
" diameter
(8.3 cm)
Ceiling Opening: 2
1
⁄
2
" diameter
(6.4 cm)
Weight: 8.8 oz.
(249 grams)
complete
assembly with cover plate
Patented with additional patents
pending.
Technical
Data
Model: ELOC
Style: Concealed
(adjustable)
Options: *Clean Room Seal
(Part #10908100)
* Clean Room Seal is U.L. Listed for ELOC as standard
response only. Please reference Clean Room Seal
data sheet for more information.
Wrench: Optima™ Concealed
(Part #1265)
Orifice Size: .64"
(16.3 mm)
(ELO)
K-Factor: 11.4
(163.02)
Thread Size:
3
⁄
4
" N.P.T.
(19.1 mm)
Approvals: U.L., cUL, M.E.A. 7-95-E
2-96
OBSOLETE
