Tyco Fire Product CENTRAL ELO-231 GB User manual

protection system prior to installation of a
suspended ceiling. They also permit
removal of suspended ceiling panels
without having to first shut down the fire
protection system and remove the
sprinklers.
Operation: When the ELO Dry Pendent
Sprinkler is in service, water is prevented
from entering the assembly by the Plunger
Assembly, a Plug & O-ring in the Inlet
(Spool) of the Sprinkler. The glass Bulb
contains a fluid which expands when
exposed to heat. When the rated
temperature is reached, the fluid expands
sufficiently to shatter the glass Bulb, and
the Bulb Seat is released. The GuideTube
drops, allowing the Plug & O-ring to
withdraw from the Inlet, which then allows
the sprinkler to activate and flow water.
WARNING
The ELO Dry Pendent Sprinklers
described herein must be installed and
maintained in compliance with this
document, as well as with the applicable
standards of the National Fire Protection
Association, in addition to the standards of
any other authorities having jurisdiction.
Failure to do so may impair the integrity of
these devices.
The owner is responsible for maintaining
their fire protection system and devices in
proper operating condition. The installing
contractor or sprinkler manufacturer
should be contacted relative to any
questions.
The ELO Dry Pendent Sprinklers must
only be installed in fittings that meet the
requirements of the Design Criteria
section.
Tyco Fire Products --- www.centralsprinkler.com
451 North Cannon Avenue, Lansdale, Pennsylvania 19446 --- USA
Customer Service/Sales: Tel: [phone] / Fax: [phone]
Technical Services: Tel: [phone] / Fax: [phone]
Model ELO-231 GB &
ELO GB QR Dry Pendent
No. 5-11.0
General
Description
The Central Model ELO-231GB, 11.2
K-factor Standard Response and Model
ELO GB QR, 11.2 K-factor Quick
Response, Standard Coverage Dry
Pendent Sprinklers are decorative glass
bulb automatic sprinklers designed for use
where pendent sprinklers are required
on dry pipe systems that are exposed
to freezing temperatures (e.g. sprinkler
drops from unheated portions of
buildings), or
where sprinklers and/or a portion of the
connecting piping may be exposed to
freezing temperatures (e.g. sprinkler
drops from wet systems into freezers),
or
where pendent sprinklers are used on
systems that are seasonably drained to
avoid freezing (e.g. vacation resort
areas).
The ELO Dry Pendent Sprinklers are
available in a wide range of operating
temperatures and order lengths. The
Model ELO-231 GB Dry Pendent
Sprinklers have a standard response
thermal sensitivity, while the Model ELO
GB QR Dry Pendent Sprinklers have a
fast response thermal sensitivity. The ELO
Dry Pendent Sprinklers are intended for
use in fire sprinkler systems designed in
accordance with the standard installation
rules recognized by the applicable Listing
or Approval agency (e.g., UL Listing is
based on NFPA 13 requirements). They
produce a hemispherical water discharge
pattern below the deflector.
The Recessed, Flush, and Extended
Escutcheons for the ELO Dry Pendent
Sprinklers are separable two-piece
designs which allow installation of the
sprinklers and pressure testing of the fire
CENTRAL ELO Dry Pendent 3-01
ELO-231 GB &
ELO GB QR
Dry Pendent
Standard Spray
Sprinklers
I
M A
O P T
11.2 K-factor - Standard Coverage
Flush, Recessed or Extended Dry Pendent Glass Bulb Automatic Sprinkler
OBSOLETE

The 155°F/68°C, 200°F/93°C or 286°F/
141°C, Model ELO-231 GB Dry
Pendent Sprinklers are UL and ULC
Listed & NYC Approved (MEA 120-97-
E) for use in light, ordinary, and extra
hazard as well storage occupancies, in
accordance with current NFPA stan-
dards. These sprinklers are listed as
Area/Density Sprinklers with a minimum
residual (flowing) pressure of 7 psi (0,5
bar) for non-storage occupancies and 10
psi (0,7 bar) for storage occupancies.
The 155°F/68°C, 200°F/93°C or 286°F/
141°C, Model ELO GB QR Dry Pendent
Sprinklers are UL and ULC Listed &
NYC Approved (MEA 120-97-E) for use
in light & ordinary hazard occupancies,
in accordance with current NFPA
standards. These sprinklers are listed
as Area/Density Sprinklers with a
minimum residual (flowing) pressure of 7
psi (0,5 bar) for non-storage occupancies.
The ELO Dry Pendent Sprinklers are to
be installed in the 1 inch NPT outlet of a
malleable iron threaded tee fitting per
Design
Criteria
1" NPT
2-3/4"
(69,9 mm)
"A" Dimension
(order length)
FINISHED
CEILING
LINE
FACE OF
FITTING
ELEVATION VIEW
WRENCH
FLAT
9/16" (14,3 mm)
MAKE-IN
Recessed -- 1-13/16" (46,0 mm) Ref.
Flush -- 2-7/16"
(61,9 mm) Ref.
WRENCH
RECESS PLUG
Figure 2 - ELO Dry Pendent Sprinkler, Flush & Recessed
Figure 1 - ELO Dry Pendent Sprinkler, Extended
Figure 3 - W-Type 8 (1068) Sprinkler Wrench
1" NPT
2-3/4"
(69,9 mm)
If "A" Dimension is < 3-1/4" (82,6 mm) ,
Dimension is 3-3/4" 3/4"
(95,3 mm 19,1 mm)
If "A" Dimension is > 3-1/4" (82,6 mm) ,
Dimension is 4-1/2" 1-1/2"
(114,3 mm 38,1 mm)
±
"A" Dimension
(order length)
FINISHED
CEILING
LINE
FACE OF
FITTING
ELEVATION VIEW
±
WRENCH
FLAT ±
±
9/16" (14,3 mm)
MAKE-IN
Sprinkler Identification Number
SIN C5255 - ELO-231 GB
SIN C5235 - ELO GB QR
Approvals
UL and ULC Listed. NYC Approved.
(The approvals apply only to the service
conditions indicated in the Design
Criteria Section)
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connection
1 inch NPT
Discharge Coefficient
K = 11.2 GPM/psi1/2 (161,3 LPM/bar1/2)
Temperature Ratings
155o F/68oC, 200oF/93oC, 286°F/141°C
Finishes
Sprinkler: White Polyester, Chrome
Plated, or Natural Brass
Physical Characteristics
The Model ELO Dry Pendent Sprinklers
utilize a dezincification resistant (DZR)
bronze frame and a 3 mm (quick re-
sponse) or 5 mm (standard response)
bulb. The Plug and Spool are brass, and
the O-ring is silicone rubber. The Main
Tube is carbon steel. The Frame is
bronze, the Deflector is brass, and the
Compression Screw is bronze. The
Guide Tube and Bulb Seat are brass.
The two pieces of the three available
Escutcheons are low carbon steel.
Technical
Data
OBSOLETE

PLUNGER
ASSEMBLY
SPRINKLER
FRAME
COMPRESSION
SCREW
DEFLECTOR
GUIDE
TUBE
MAIN
TUBE
BULB
SEAT
GLASS BULB
OPERATING
ELEMENT
SPOOL
SUPPORT CUP
EXTENDED
SKIRT
ELO DP
RECESSED
ESCUTCHEON
VENT HOLE
Ordering Length for Dry Pendent Heads
Flush — The “A” dimension is measured from the face of the tee to the finished ceiling. This is only approximately flush.
Order to the nearest 1/4" (6,4 mm). Minimum “A” dimension is 2" (50,8 mm).
Recessed — The “A” dimension is measured from the face of the tee to the finished ceiling. Minimum “A” dimension is
2-1⁄4" (57,2 mm). Adjustment is ±3⁄8" (9,5 mm).
Extended — The “A” dimension is measured from the face of the tee to the finished ceiling.
If this dimension is less than or equal to 3-1⁄4" (82,6 mm), total adjustment is 1-1⁄2" (38,1 mm) (from the mid point of the
adjustment range ±3⁄4" (19,1 mm)). Order to the nearest 1⁄4" (6,4 mm). Minimum “A” dimension is 0".
If this dimension is greater than 3-1⁄4" (82,6 mm), the total adjustment is 3" (76,2 mm) (from the mid point of the adjustment
range ±1-1⁄2" (38,1 mm)). Order to the nearest 1⁄4" (6,4 mm). Minimum “A” dimension is 3-1⁄4" (82,6 mm).
The ELO Dry Pendent Sprinkers must be
installed in accordance with the following
instructions:
NOTES
The ELO GB Dry Pendent Sprinkers must
only be installed in fittings that meet the
requirements of the Design Criteria
section.
Refer to the Design Criteria section for
other important requirements regarding
piping design and sealing of the clearance
space around the Main Tube.
Do not install any bulb type sprinkler if the
bulb is cracked or there is a loss of liquid
from the bulb. With the sprinkler held
horizontally, a small air bubble should be
present. The diameter of the air bubble is
approximately 1/16 inch (1,6 mm) for the
155
° F/68 ° C to 3/32 inch (2,4 mm) for the
286
° F/141 ° C rating.
A leak tight 1 inch NPT sprinkler joint
should be obtained with a torque of 20 to
30 ft.lbs. (26,8 to 40,2 Nm). Higher levels
Installation
ANSI B16.3 or cast iron threaded tee
fitting per ANSI B16.4 with the end
sprinkler fitting on a branch line to be
plugged as shown in Figure 3. Only use
maximum 2-1/2 inch size reducing tee's
for dry pipe sprinkler systems.
NOTES
Do not install the ELO Dry Pendent
Sprinklers into any other type fitting
without first consulting the Technical
Services Department. Failure to use the
appropriate fitting may result in: failure
of the sprinkler to properly operate due
to formation of ice over the inlet Plug or
binding of the inlet Plug; or, insufficient
engagement of the inlet pipe threads
with consequent leakage.
In the case of a dry pipe sprinkler
system subject to freezing, the use of a
fitting of other than the types specified
may result in failure of the sprinkler to
properly operate due to the formation of
ice over the Inlet.
Branch, cross, and feed main piping
connected to Dry Sprinklers and subject
to freezing temperatures must be
pitched for drainage in accordance with
the minimum requirements of the
National Fire Protection Association for
dry pipe sprinkler systems.
When Dry Sprinklers are to be used in
wet pipe sprinkler systems protecting
areas subject to freezing temperatures
(e.g., sprinkler drops into freezers),
consideration must be given to the
appropriate length of the sprinkler that
will prevent freezing of the water in the
connecting pipes due to conduction.
When Dry Sprinklers penetrate a ceiling
into an area subject to freezing, the
clearance space around the Main Tube
must be completely sealed in order to
prevent the leakage of moist air into the
freezing area which might result in the
formation of condensate around the
Frame, Deflector, Bulb Seat, or Bulb.
Failure to prevent the formation of
condensate could result in the build-up
of ice around the releasing components
and, consequently, either an inadvertent
operation of the sprinkler or impaired
operation due to reduced thermal
sensitivity.
Figure 3 - Cross Section, ELO Dry Pendent
of torque may distort the 1 inch NPT
sprinkler inlet with consequent leakage or
impairment of the sprinkler.
Do not attempt to compensate for
insufficient adjustment in an Escutcheon
Plate by under- or over-tightening the
Sprinkler. Readjust the position of the
sprinkler fitting to suit.
Step 1. The sprinkler must be installed
only in the pendent position and with the
deflector parallel to the mounting surface.
Step 2. With pipe thread sealant applied
to the pipe threads, hand tighten the
sprinkler into the sprinkler fitting.
Step 3. Wrench tighten the sprinkler by
wrenching on the Main Tube with a pipe
wrench whenever the casing is readily
accessible. Otherwise, use a W-Type 8
Sprinkler Wrench (Ref. Figure 3). The
wrench recess of the W-Type 8 is to be
applied to the sprinkler wrench flats (Ref.
Figure 1 & 2).
Step 4. After a suspended ceiling has
been installed or the finish coat has been
applied to a fixed ceiling (as applicable),
slide on the outer piece of the Escutcheon
until it comes in contact with the ceiling.
Do not lift the ceiling panel out of its
normal position.
OBSOLETE

Printed in U.S.A. 3-01
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. Refer to price list for complete
listing of Part Numbers.
Order dry pendents by “A” dimension to
the nearest 1⁄4" (6,4 mm).
Teflon is a trademark of the DuPont Corp.
Ordering
Information
Flow Control
Tyco Fire

Products
The ELO Dry Pendent Sprinklers must be
maintained and serviced in accordance
with the following instructions.
NOTES
Absence of the outer piece of an
escutcheon, which is used to cover a
clearance hole, may delay the time to
sprinkler operation in a fire situation.
Before closing a fire protection system
main control valve for maintenance work
on the fire protection system which it
controls, permission to shut down the
affected fire protection systems must be
obtained from the proper authorities and
all personnel who may be affected by this
action must be notified.
It is recommended that the piping
connected to Dry Sprinklers be periodi-
cally checked to assure that proper pitch
and drainage is in accordance with the
minimum requirements of the National
Fire Protection Association if the piping is
subject to freezing temperatures.
A Vent Hole is provided in the Bulb Seat
(Ref. Figure 3) to indicate if the Dry
Sprinkler is remaining dry. Evidence of
leakage from the Vent Hole is an
indication that there may be weepage
past the O-ring seal and, therefore, it is an
indication that the sprinkler needs to be
removed for determining the cause of
leakage (e.g. an improper installation or
an ice plug). The fire protection system
control valve must be closed and the
system drained before removing the
sprinkler.
Sprinklers which are found to be leaking
or exibiting visible signs of corrosion must
be replaced.
Automatic sprinklers must never be
shipped or stored where their tempera-
tures will exceed 100°F/38°C and they
must never be painted, plated, coated or
otherwise altered after leaving the factory.
Modified sprinklers must be replaced.
Sprinklers that have been exposed to
corrosive products of combustion, but
have not operated, should be replaced if
they cannot be completely cleaned by
wiping the sprinkler with a cloth or by
brushing it with a soft bristle brush.
Care must be exercised to avoid damage
- before, during, and after installation.
Sprinklers damaged by dropping, striking,
wrench twist/slippage, or the like, must be
replaced. Also, replace any sprinkler that
has a cracked bulb or that has lost liquid
from its bulb (ref. Installation Section).
The owner is responsible for the inspec-
tion, testing, and maintenance of their fire
protection system and devices in
compliance with this document, as well as
Care &
Maintenance
with the applicable standards of the
National Fire Protection Association (e.g.,
NFPA 25), in addition to the standards of
any other authorities having jurisdiction.
The installing contractor or sprinkler
manufacturer should be contacted relative
to any questions.
It is recommended that automatic sprinkler
systems be inspected, tested, and
maintained by a qualified Inspection
Service.
Products manufactured by Tyco Fire
Products are warranted solely to the
original Buyer for ten (10) years against
defects in material and workmanship
when paid for and properly installed and
maintained under normal use and service.
This warranty will expire ten (10) years
from date of shipment by Tyco Fire
Products. No warranty is given for
products or components manufactured by
companies not affiliated by ownership with
Tyco Fire Products or for products and
components which have been subject to
misuse, improper installation, corrosion, or
which have not been installed, maintained,
modified or repaired in accordance with
applicable Standards of the National Fire
Protection Association, and/or the
standards of any other Authorities Having
Jurisdiction. Materials found by Tyco Fire
Products to be defective shall be either
repaired or replaced, at Tyco Fire
Products' sole option. Tyco Fire Products
neither assumes, nor authorizes any
person to assume for it, any other
obligation in connection with the sale of
products or parts of products. Tyco Fire
Products shall not be responsible for
sprinkler system design errors or inaccu-
rate or incomplete information supplied by
Buyer or Buyer's representatives.
IN NO EVENT SHALL TYCO FIRE
PRODUCTS BE LIABLE, IN CON-
TRACT, TORT, STRICT LIABILITY OR
UNDER ANY OTHER LEGAL THEORY,
FOR INCIDENTAL, INDIRECT, SPECIAL
OR CONSEQUENTIAL DAMAGES,
INCLUDING BUT NOT LIMITED TO
LABOR CHARGES, REGARDLESS OF
WHETHER TYCO FIRE PRODUCTS
WAS INFORMED ABOUT THE POSSI-
BILITY OF SUCH DAMAGES, AND IN
NO EVENT SHALL TYCO FIRE PROD-
UCTS' LIABILITY EXCEED AN AMOUNT
EQUAL TO THE SALES PRICE.
THE FOREGOING WARRANTY IS
MADE IN LIEU OF ANY AND ALL
OTHER WARRANTIES EXPRESS OR
IMPLIED, INCLUDING WARRANTIES
OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.
Limited
Warranty
OBSOLETE