Operation
The fusible link assembly is comprised
of two link halves that are joined to-
gether by a thin layer of solder. When
the rated temperature is reached, the
solder melts and the two link halves
separate activating the sprinkler and
flowing water.
Design
Criteria
UL AND C-UL LISTING CRITERIA
The Model ESFR-1 (SIN TY6226)
Sprinklers are UL and C-UL Listed as
“Early Suppression Fast Response
Sprinklers” for installation per NFPA 13
or other applicable NFPA standards up
to a maximum ceiling height of 40 ft.
(12,2 m).
FM APPROVAL CRITERIA
The Model ESFR-1 (SIN TY6226)
Sprinklers are FM Approved as “Early
Suppression Fast Response Sprin-
klers” for installation per the applicable
FM Loss Prevention Data Sheets up to
a
maximum ceiling height of 45 ft.
(13,7 m).
Installation
The Model ESFR-1 Pendent Sprin-
klers are to be installed in accordance
with the following instructions:
NOTE
Damage to the fusible Link Assembly
during installation can be avoided by
handling the sprinkler by the frame
arms only (i.e., do not apply pressure
to the fusible Link Assembly), and by
using
the
appropriate
sprinkler
wrench. Damaged sprinklers must be
replaced.
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). Higher
levels of torque may distort the sprin-
kler inlet with consequent leakage or
impairment of the sprinkler.
Step 1.
The ESFR-1 Sprinkler must be
installed in the pendent position.
Step 2.
With pipe thread sealant ap-
plied, hand tighten the sprinkler into
the sprinkler fitting. Do not apply pres-
sure to the Link Assembly, and handle
the ESFR-1 Sprinkler by the Frame
arms only.
Step 3.
Wrench tighten the ESFR-1
Sprinkler using only the W-Type 2
Sprinkler Wrench (Ref. Figure 2) and
by fully engaging (seating) the wrench
on the sprinkler wrench flats.
Step 4.
After installation, inspect the
Link Assembly of each ESFR-1 Sprin-
kler for damage. In particular, verify
that the Link Assembly and Hook are
positioned as illustrated in Figure 1,
and that the Link Assembly has not
Page 2 of 4
TFP318
1-Frame
2-Deflector
3-Compression Screw
4-Hook
5-Strut
6-Link Assembly
7-Button
8-Gasketed Spring Plate
9-Ejection Spring
FIGURE 1, MODEL ESFR-1 EARLY SUPPRESSION FAST RESPONSE PENDENT SPRINKLER
* Registered Trademark of DuPont
OBSOLETE
