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
