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Tyco Fire Product CENTRAL A-1 User manual

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Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
1⁄2" (15 mm) Orifice
Adjustable
Dry Pendent
Automatic
Sprinkler
A-1 Adjustable Dry Pendent
No. 5-3.0
Model A-1
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.
The Model A-1 Adjustable Dry Pendent
Sprinklers are designed for use in special
applications such as freezing environ-
ments or in conditions where sediment or
foreign materials might accumulate in
ordinary drop pipes.
Unlike standard nonadjustable dry
pendent sprinklers, the Model A-1
incorporates a special elbow that permits
21⁄2" (63.5 mm) of field adjustment. This
exclusive and unique feature allows
flexibility which was never before
available. It ensures a perfect ceiling fit
for the sprinkler upon initial installation.
Should the ceiling sag, a simple readjust-
ment can once again obtain a perfect
ceiling fit.
The Model A-1 Adjustable Dry Pendent
Sprinklers offer considerable aesthetic
appeal. They are available concealed or
recessed.
The escutcheon assembly is com-
prised of an upper escutcheon support
piece permanently attached to the
sprinkler frame and a ceiling escutcheon
plate that slips over the installed sprin-
kler. The Model A-1 is Listed by U.L.,
F.M. and U.L.C. for use as a standard
sprinkler that qualifies for installation in
accordance with current NFPA Standards.
Product
Description
FM & MEA — Brass, Chrome
Flush & Extended *Recessed
135°F/57°C 135°F/57°C
165°F/74°C 165°F/74°C
212°F/100°C 212°F/100°C
286°F/141°C
*
Recessed FM Approved for Light Hazard Only.
Technical
Data
Model: A-1
Style: Flush, Recessed, Extended or
Concealed
Wrench: For adjustment of sprinkler only.
See installation sequence steps 2 and 4
on page 3. Combination (Part #1106) for
recessed or Universal (Part #1122) for
concealed.
Orifice Size: 1⁄2" (15 mm)
K-Factor: See K-Factor Table on page 2
Thread Size: Tube: 1" (25 mm) N.P.T.
Approvals: U.L., U.L.C., F.M.,
MEA 375-75-SA
(Seeapproval
chartsforspecificListings)
Maximum Working Pressure: 175 psi
(12.1 bar)
Factory Hydro Test: 100% at 500 psi
(34.5 bar)
Standard Finishes:
Sprinkler: brass, chrome, white, black
Escutcheon: brass, chrome plated and
white painted with
additional special finishes
available upon request for
concealed plate.
Adjustable Dry Pendent
Flush, Recessed, Extended & Concealed
Automatic Sprinkler
1-98
Approvals
UL & ULC — Brass, Chrome, *White, *Black
Flush & Extended Recessed Concealed
135°F/57°C
2
135°F/57°C
2
162°F/72°C with 135°F/57C plate
165°F/74°C
1, 2, 3
165°F/74°C
1, 2, 3
212°F/100°C with 165°F/74°C plate
212°F/100°C
1, 2, 3
212°F/100°C
1, 2, 3
286°F/141°C
1
286°F/141°C
U.L. Corrosion Resistant Coatings: 1 = Wax, 2 = Lead, 3 = Wax-Over-Lead
* White & Black NOT ULC Listed.
OBSOLETE
2
Figure 1 Model A-1
Adjustable Dry Pendent
Flush, Recessed
Figure 2 Model A-1
Adjustable Dry Pendent
Extended
Figure 3 Model A-1
Adjustable Dry Pendent
Concealed
Center Line of
Sprinkler Branch Line
Finished Ceiling
LIne
1" (25 mm)
NPT
“C”
Dimension
(order length)
Center Line of
Sprinkler Branch
Line
1 1/2" (38.1 mm)
Min.
2" (50.8 mm)
Max.
2 9/16"
(65.1 mm)
Ceiling
Escutcheon
Plate
Main Tube
1" (25.4 mm), 1 1/4" (31.8 mm),
1 1/2" (38.1 mm)
Threaded Line Fitting = 3" (76.2 mm)
2" (50.8 mm) Threaded Line Fitting =
3 1/8" (79.4 mm)
Order “C”
Dim. K-Factor
*5" (127.0 mm) 5.35
61⁄4" (158.8 mm) 5.32
71⁄2" (190.5 mm) 5.29
83⁄4" (222.3 mm) 5.26
10" (254.0 mm) 5.23
111⁄4" (285.8 mm) 5.20
121⁄2" (317.5 mm) 5.17
133⁄4" (349.3 mm) 5.14
15" (381.0 mm) 5.11
161⁄4" (412.8 mm) 5.08
171⁄2" (444.5 mm) 5.05
183⁄4" (476.3 mm) 5.02
20" (508.0 mm) 4.99
* Available in flush only.
Recessed
K-Factor Table
Order “C”
Dim. K-Factor
211⁄4" (539.8 mm) 4.96
221⁄2" (571.5 mm) 4.93
233⁄4" (603.3 mm) 4.90
25" (635.0 mm) 4.87
261⁄4" (666.8 mm) 4.84
271⁄2" (698.5 mm) 4.81
283⁄4" (730.3 mm) 4.78
30" (762.0 mm) 4.75
311⁄4" (793.8 mm) 4.72
321⁄2" (825.5 mm) 4.69
333⁄4" (857.3 mm) 4.66
35" (889.0 mm) 4.63
Order “C”
Dim. K-Factor
20" (508.0 mm) 4.88
211⁄4" (539.8 mm) 4.85
221⁄2" (571.5 mm) 4.82
233⁄4" (603.3 mm) 4.79
25" (635.0 mm) 4.76
261⁄4" (666.8 mm) 4.73
271⁄2" (698.5 mm) 4.70
283⁄4" (730.3 mm) 4.67
30" (762.0 mm) 4.64
311⁄4" (793.8 mm) 4.61
321⁄2" (825.5 mm) 4.58
333⁄4" (857.3 mm) 4.55
35" (889.0 mm) 4.52
Extended
K-Factor Table
Order “C”
Dim. K-Factor
33⁄4" (95.3 mm) 5.27
5" (127.0 mm) 5.24
61⁄4" (158.8 mm) 5.21
71⁄2" (190.5 mm) 5.18
83⁄4" (222.3 mm) 5.15
10" (254.0 mm) 5.12
111⁄4" (285.8 mm) 5.09
121⁄2" (317.5 mm) 5.06
133⁄4" (349.3 mm) 5.03
15" (381.0 mm) 5.00
161⁄4" (412.8 mm) 4.97
171⁄2" (444.5 mm) 7.94
183⁄4" (476.3 mm) 4.91
Caution: This unit must only be installed with
the special cast iron fitting supplied, as this is a
listed assembly. Installation into any other
fitting will void the listing.
Notes:
A-1 Adjustable Dry Pendent Ordering Length
1. Order by “C” Dimensions shown in the tables above. Round
actual “C” dimension up or down to the closest “C” dimension
shown in the chart. Field adjustment is ±1 1/2" (38.1 mm) from
the “C” dimension shown in the chart. The “C” dimension is
measured from the center line of the branch line to the face of
the finished ceiling.
2. Maximum Listed length is 36" (914.4 mm).
A-1 Adjustable Dry Pendent Design Guidelines
After determining the order length, use the K-factor associated with
the length in the hydraulic calculations at the tee in the branchline.
Concealed
K-Factor Table
Order “C”
Dim. K-Factor
221⁄2" (571.5 mm) 4.93
233⁄4" (603.3 mm) 4.90
25" (635.0 mm) 4.87
261⁄4" (666.8 mm) 4.84
271⁄2" (698.5 mm) 4.81
283⁄4" (730.3 mm) 4.78
30" (762.0 mm) 4.75
311⁄4" (793.8 mm) 4.72
321⁄2" (825.5 mm) 4.69
333⁄4" (857.3 mm) 4.66
35" (889.0 mm) 4.63
Order “C”
Dim. K-Factor
71⁄2" (190.5 mm) 5.29
83⁄4" (222.3 mm) 5.26
10" (254.0 mm) 5.23
111⁄4" (285.8 mm) 5.20
121⁄2" (317.5 mm) 5.17
133⁄4" (349.3 mm) 5.14
15" (381.0 mm) 5.11
161⁄4" (412.8 mm) 5.08
171⁄2" (444.5 mm) 5.05
183⁄4" (476.3 mm) 5.02
20" (508.0 mm) 4.99
211⁄4" (539.8 mm) 4.96
Center Line of
Sprinkler Branch Line
Finished Ceiling
LIne
“C”
Dimension
(order length)
Center Line of
Sprinkler Branch
Line
3 3/4" (95.3 mm) Min.
4 5/8 (117.5 mm) Max.
Main Tube
1" (25.4 mm), 1 1/4" (31.8 mm),
1 1/2" (38.1 mm)
Threaded Line Fitting = 3" (76.2 mm)
2" (50.8 mm) Threaded Line Fitting =
3 1/8" (79.4 mm)
1" (25 mm)
NPT
2 9/16"
(65.1 mm)
Center Line of
Sprinkler Branch Line
Finished
Ceiling LIne
Main Tube
Center Line of
Sprinkler Branch
Line
Ceiling Cover Plate
3 5/8" (92.1 mm) Diameter
“C”
Dimension
(order length)
3/16"
(4.8 mm)
1" (25.4 mm), 1 1/4" (31.8 mm),
1 1/2" (38.1 mm)
Threaded Line Fitting = 3" (76.2 mm)
2" (50.8 mm) Threaded Line Fitting =
3 1/8" (79.4 mm)
2 9/16"
(65.1 mm)
1" (25 mm)
NPT
OBSOLETE
3
Design Requirements—Standard Applications
The Model A-1 Flush, Recessed, Extended and Concealed Adjustable Dry
Pendent Sprinklers are intended for standard area coverages and standard flow
and pressure requirements as specified in current NFPA Standards.
Installation
Technical
Data
obtained by applying the sprinkler
head wrench and turning either
clockwise or counterclockwise. Note
that no locking is required when the
sprinkler is in its desired position.
Step 5. To install the recessed
escutcheon plate, align it with and
push it over the sprinkler body and
into the upper support piece until the
outer edge of the escutcheon meets
the mounting surface. The recessed
escutcheon tool may be used to
install the escutcheon plate easily
from the floor.
To install the concealed ceiling
cover plate, align the dimples of the
support ring assembly with the slots
of the upper support shell assembly.
Push upward and twist to the right.
Do not over- or under-tighten the
sprinkler to compensate for inaccu-
rate escutcheon plate adjustment.
Caution: Special care must be taken
when installing with a CPVC system.
Sprinklers must be installed after the
manufacturer's recommended setting
time for the primer and cement to
ensure that neither accumulate within
the sprinkler.
Special care must be taken when
installing with a copper system.
Sprinklers must be installed only after
the inside of the sprinkler drop and
associated fittings have been wire
brushed to remove any flux. Residual
flux can cause corrosion and in
extreme cases can impair proper
sprinkler operation.
Combination Wrench Part #1106
Universal Wrench Part #1122
not attached to the sprinkler assem-
bly in the factory as this fitting must
be made into the sprinkler line fitting
first. Warning: Do not over-tighten
special cast iron fitting into the
branch line fitting or breakage will
result. The sprinkler assembly is
attached to the special cast iron fitting
by screwing the threaded connector
tightly. This is done by using a pipe
wrench on the threaded connector.
Never wrench on the sprinkler head
itself for tightening the threaded
connector into the special cast iron
fitting. The Model 1106 (recessed) or
the Model 1122 (concealed) sprinkler
wrench may be used on the sprinkler
for adjustment purposes only (see
Step #4).
Step 3. 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 4. Adjustment in length is
All Model A-1 Adjustable Dry
Pendent Automatic Sprinklers must
be installed according to current
NFPA 13 Standards.
Deviations from these require-
ments 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.
Dry pendent sprinklers are
designed to prevent water from
accumulating in drops to sprinklers.
To accomplish this, they have a fitting
that protrudes into the branch line
that allows the plug to sit above the
water line, if there is any residual
water, and operate without the
potential of freezing.
For standard applications the
system piping may be hydraulically
calculated or pipe-scheduled. 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. The unit must be installed in
a pendent position.
Step 2. The special cast iron fitting is
OBSOLETE
©1997 Central Sprinkler Company
Printed in U.S.A. A1 Adj. Dry.3
Ordering Information: When
placing an order, indicate the full
product name. Please specify the
quantity, model, style, orifice size,
temperature rating, sprinkler finish,
and escutcheon finish, and required
“C” Dimension.
See page 2 for “C” Dimension
information.
For special painted concealed
plate finishes, the customer must
supply a quick-drying paint, a
lacquer-base is preferred, to insure
proper color duplication.
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.
Ordering
Information
obstructions must be removed. In the
event that construction has altered
the original configuration, additional
sprinklers should be installed to
maintain the protection level.
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 recommended precaution.
To remove the system from service,
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
recommended 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 repaired and returned to
service immediately. Inspect the
entire system for damage and replace
or repair as necessary. Sprinklers
that did not operate but were sub-
jected to corrosive elements of
combustion or excessive tempera-
tures should be inspected, and
replaced if need be. The
Authority
Having Jurisdiction
will detail mini-
mum 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.
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 should 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 a 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 orifice, style, 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
Central Sprinkler Company
451 North Cannon Avenue, Lansdale, PA 19446
Phone: 215-362-0700
FAX: 215-362-5385
OBSOLETE