Tyco Fire Product CENTRAL A-1 Instruction Manual

Model A-1
Adjustable Dry Pendent
Flush, Recessed, Extended & Concealed
Automatic Sprinkler
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
Product
Description
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
2 1 ⁄ " (63.5 mm) of field adjustment. This
2
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.
UL & ULC — Brass, Chrome, *White, *Black
Flush & Extended
135°F/57°C
2
165°F/74°C
1, 2, 3
212°F/100°C
1, 2, 3
286°F/141°C
1
U.L. Corrosion Resistant Coatings: 1 = Wax, 2 = Lead, 3 = Wax-Over-Lead
* White & Black NOT ULC Listed.
Flush & Extended
135°F/57°C
165°F/74°C
212°F/100°C
286°F/141°C
*
Recessed FM Approved for Light Hazard Only.
A-1 Adjustable Dry Pendent
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.
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:
K-Factor: See K-Factor Table on page 2
Thread Size: Tube: 1" (25 mm) N.P.T.

Approvals:

Maximum Working Pressure: 175 psi
Factory Hydro Test: 100% at 500 psi
Standard Finishes:
Sprinkler: brass, chrome, white, black
Escutcheon: brass, chrome plated and
Approvals
Recessed
135°F/57°C 162°F/72°C with 135°F/57C plate
2
165°F/74°C 212°F/100°C with 165°F/74°C plate
1, 2, 3
212°F/100°C
1, 2, 3
286°F/141°C
FM & MEA — Brass, Chrome
*Recessed
135°F/57°C
165°F/74°C
212°F/100°C
Technical
Data
1 ⁄ " (15 mm)
2
U.L., U.L.C., F.M.,
MEA 375-75-SA
(See approval
charts for specific Listings)
(12.1 bar)
(34.5 bar)
white painted with
additional special finishes
available upon request for
concealed plate.
Concealed
1-98
"
1
⁄
Orifice
(15 mm)
2
Adjustable
Dry Pendent
Automatic
Sprinkler
No. 5-3.0