1/2 to 12-1/2 inches (114,3 to 317,5 mm) below the ceil-
ing (Ref. Figure 2).
Only the Institutional Escutcheons shown in Figure 3 can
be utilized with the Model PH-5.
NOTES
The Sprinkler Body must not extend beyond the Institu-
tional Escutcheon (Ref. Figure 5). Otherwise the tamper
resistant design of the Model PH-5 will be compromised.
Consequently, #1752 Spacers, which are associated
with other Star institutional sprinklers, cannot to be
utilized.
Integrity of the tamper resistant design of the Institutional
Escutcheon is dependent on the piping installation de-
sign. When installed properly, the Institutional Escutch-
eon is held fast to the mounting surface by the tightening
of the sprinkler assembly into the sprinkler fitting. In order
to accomplish a proper installation, the sprinkler fitting
must be properly located with respect to distance from
the face of the sprinkler fitting to the face of the mounting
surface (Ref. Figure 3); the sprinkler fitting being rigidly
secured and held immobile; and, the centerline of the
sprinkler fitting being perpendicular to the mounting sur-
face to assure that the escutcheon sits squarely against
the mounting surface around the entire perimeter of the
Institutional Escutcheon. Figure 2 illustrates a typical in-
stallation that can be utilized to help adjust the location
of the sprinkler fitting; to help assure immobility of the
sprinkler fitting; and, to help maintain perpendicularity of
the sprinkler fitting to the mounting surface.
STAR SPRINKLER
Page 2
1-5.3.10
FIGURE 1
5.6 K-FACTOR, MODEL PH-5 STANDARD RESPONSE
INSTITUTIONAL HORIZONTAL SIDEWALL SPRINKLER
(71.4 mm)
2.81"
7/16" (11.1 mm)
NOMINAL MAKE-IN
(80.8 mm)
3.18"
SPRINKLER
FACE OF
NPT
FITTING
1/2"
NOTCH (2)
OF SPRINKLER
WATERWAY
CENTERLINE
IN OPERATED
DEFLECTOR
POSITION
(12.7 mm)
1/2"
INSTALL SPRINKLER
SPRINKLER
WRENCHING
TOP AS SHOWN
HAT ORIENTED AT
WITH DEFLECTOR
FIGURE 2
TYPICAL INSTALLATION WITH #1780 RETAINING FLANGE AND #1781 CENTERING GROMMET
REDUCING COUPLING
1" x 1/2" M.I. CLASS 150
5/8" (15.9 mm)
w/ GROOVED
1" STEEL PIPE
WALL THICKNESS
RESULTS IN DEFLECTOR-
4" (101.6 mm) TO 12" (304.8 mm)
TO-CEILING DISTANCE OF
4-1/2" (114.3 mm) TO
12-1/2" (317.5 mm)
*
w/ ESCUTCHEON
MODEL PH-5
WATERWAY
OF SPRINKLER
CENTERLINE
FINISHED
CEILING
*
w/ SET SCREWS
RETAINING
FLANGE
GROMMET
#1781 CENTERING
#1780
2" SCH. 40
(LENGTH TO SUIT
STEEL PIPE SLEEVE
WALL THICKNESS)
OR 2" (50 mm) I.D.
CORED HOLE
END
OBSOLETE