SEP 2019
GFS-104
PAGE 2 of 3
INSTALLATION
Step 1.
Install pendent sprinklers in the pendent
position, with the centerline of the sprinkler
perpendicular to the mounting surface.
Step 2.
Remove the Protective Cap.
Step 3.
With pipe-thread sealant applied to the pipe
threads, and using the Concealed Sprinkler
Wrench P/N 325391 or P/N 325401 (FIGURE
2), install and tighten the Sprinkler/Concealed
Cup Assembly into the fitting.
Step 4.
Replace the Protective Cap by pushing it
upwards until it bottoms out against the Sup-
port Cup. The Protective Cap helps prevent
damage to the Deflector and Drop Pins during
ceiling installation and/or during application of
the finish coating of the ceiling.
NOTICE:
The system is considered Out of Service when
the protective caps are in place.
Step 5.
After the ceiling has been completed with the
2-1/2” (63.2mm) diameter hole, remove and
discard the Protective Cap and verify that the
Deflector has not been damaged. If the sprin
-
kler has been damaged , replace the entire
sprinkler assembly. Do not attempt to modify
or repair.
Step 6.
Thread on the Cover Plate Assembly until its
flange contacts the ceiling. Never attempt to
screw on the Cover Plate Assembly such that
it lifts a ceiling panel out of its normal posi-
tion. If the Cover Plate Assembly cannot be
engaged with the Mounting Cup or the Cover
Plate Assembly cannot be engaged sufficient
-
ly to contact the ceiling, the Sprinkler Fitting
must be repositioned.
NOTICE
Do not install any bulb-type sprinkler if the bulb is cracked or
there is loss of liquid from the bulb. Sprinklers should be tightened
enough to obtain a leak-tight joint when water pressure is applied
and/or hydrostatic test is performed. Sprinklers should not be
overtightened as this can result in distortion and subsequent leak-
age. It is recommended not to exceed 14 ft.-lb. (19.0 Nm) torque
for 1/2 inch NPT sprinkler threads; 20 ft.-lb. (26.8 Nm) to 3/4 inch
NPT threads.
FIGURE 1: 1/2” ADJUSTMENT DOMED PLATE
CONCEALED PENDENT
INSTALLATION DIMENSIONS
FIGURE 2: CONCEALED WRENCH
½” NPT P/N 325391
¾” NPT P/N 325401
SIN
GL2845
GL4245
GL5645
GL8145
K-FACTOR
2.8 (40 metric)
4.2 (60 metric)
5.6 (80 metric)
8.0 (115 metric)
NPT
1/2” (15mm)
1/2” (15mm)
1/2” (15mm)
3/4” (20mm)
COVER PLATE
135°F (57°C)
155°F (68°C)
135°F (57°C)
155°F (68°C)
135°F (57°C)
155°F (68°C)
155°F (68°C)
SPRINKLER
TEMPERATURE
135°F (57°C)
155°F (68°C)
155°F (68°C)
200°F (93°C)
135°F (57°C)
155°F (68°C)
155°F (68°C)
200°F (93°C)
135°F (57°C)
155°F (68°C)
155°F (68°C)
175°F (79°C)
200°F (93°C)
155°F (68°C)
175°F (79°C)
200°F (93°C)
TABLE A: cULus LISTING
