DEFLECTOR
SPRINKLER
FRAME
EJECTOR
SPRING
ACTUATING
ROD
CAP
SEAL DISK
WRENCH
FLAT
1/2" or 3/4" NPT
1"
(25,4 mm)
2-9/16"
(65,1 mm)
WRENCH
FLAT
1/2" or 3/4" NPT
1-5/16"
(33,3 mm)
2-9/16"
(65,1 mm)
Figure 2 - Model A, Pendent Sprinkler
Figure 1 - Model A, Upright Sprinkler
Figure 3 - Cross Section
Model A, Upright Sprinkler
Figure 4 - Combination Sprinkler Wrench (Part #1106)
Design
Criteria
The Model A Upright & Pendent
Sprinklers are Standard Response,
Standard Coverage, Spray Sprinklers
intended for fire protection systems
designed in accordance with the standard
installation rules recognized by the
applicable Listing or Approval agency.
The 2.8, 4.2, 5.6 & 8.0 K-Factor, Model A
Sprinklers (Ref. Table 1-4) are UL, ULC
Listed and NYC Approved for use in
accordance with current NFPA standards.
The 2.8, 5.6 & 8.0 K-Factor, Model A
Sprinklers (Ref. Table 1-4) are FM
Approved for use in accordance with the
FM Loss Prevention Data Sheets.
The Model A Sprinklers can be used with
any metalic flush or extended escutcheon,
provided the maximum ceiling to top of
sprinkler deflector dimension specified in
NFPA 13 is maintained. For recessed
applications, see Data Sheet 1-2.0
The Model A Upright & Pendent
Sprinklers
must be installed in accor-
dance with the following instructions.
NOTES
A leak tight 1/2 inch NPT sprinkler joint
should be obtained with a torque of 7 to
14 ft.lbs. (9,5 to 19,0 Nm). A maximum
of 21 ft.lbs. (28,5 Nm) of torque is to be
used to install 1/2 inch NPT sprinklers.
Installation
(K=2.8,4.2 & 8.0) & 1-3.0 (K=5.6) for
details.
NOTE
Inquiries concerning the appropriateness
of wax or lead coated sprinklers for a
given corrosive environment should be
submitted to the attention of the Technical
Services Department. Wax or lead coated
sprinklers are not suitable ro use in open
sprinkler applications.
A leak tight 3/4 inch NPT sprinkler joint
should be obtained with a torque of 10
to 20 ft.lbs. (13,4 to 26,8 Nm). A
maximum of 30 ft.lbs. (40,7 Nm) of
torque is to be used to install 3/4 inch
NPT sprinklers. Higher levels of torque
may distort the sprinkler inlet with
consequent leakage or impairment of
the sprinkler.
Step 1. Upright sprinklers must be
installed only in the upright position and
pendent sprinklers must be installed
only in the pendent position. The
deflector is to be parallel to the ceiling,
roof, or mounting surface, as applicable.
Step 2. With pipe thread sealant applied
to the pipe threads, hand tighten the
sprinkler into the sprinkler fitting.
Step 3. Tighten the sprinkler into the
sprinkler fitting using only the Combina-
tion Wrench (Ref. Figure 4), except that
an 8 or 10 inch adjustable Crescent
wrench is to be used for wax coated
(Continued on page 4)
OBSOLETE
