INSTALLATION
NOTE
Do not install any bulb type sprinkler
if the bulb is cracked or there is a loss
of liquid from the bulb. With the
sprinkler held horizontal, a small air
bubble should be present. The diame-
ter of the air bubble is approximately
1/16 inch (1,6 mm) for the
155°F/68°C to 3/32 inch (2,4 mm) for
the 286°F/141°C rating.
The Model F892 Sprinklers must be
installed in accordance with the follow-
ing instructions.
1. With pipe thread sealant applied to
the pipe threads, hand tighten the
F892 Sprinkler into the sprinkler fit-
ting.
2. Using the W-Type 8 Sprinkler
Wrench (Ref. Fig. B) applied to the
sprinkler Wrench Flats (Ref. Fig. A),
tighten the F892 Sprinkler into the
sprinkler fitting.
NOTE
A leak tight 3/4 inch NPT sprin-
kler 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 sprinkler inlet
with consequent leakage or im-
pairment of the sprinkler.
CARE AND MAINTENANCE
Model F892 Sprinklers must be main-
tained and serviced in accordance
with the following instructions:
NOTES
Before closing a fire protection system
control valve for maintenance work
on the fire protection system which it
controls, permission to shut down the
affected fire protection system must be
obtained from the proper authorities
and all personnel who may be affected
by this action must be notified.
Sprinklers which are found to be leak-
ing or exhibiting visible signs of corro-
sion must be replaced.
Automatic sprinklers must never be
shipped or stored where their tempera-
tures will exceed 100°F/38°C and they
must never be painted, plated, coated
or otherwise altered after leaving the
factory. Modified sprinklers must be
replaced. Sprinklers that have been
exposed to corrosive products of com-
bustion, but have not operated, should
be replaced if they cannot be com-
pletely cleaned by wiping the sprinkler
with a cloth or by brushing it with a soft
bristle brush.
Care must be exercised to avoid dam-
age to the sprinklers — before, during,
and after installation. Sprinklers dam-
aged by dropping, striking, wrench
twist/slippage, or the like, must be re-
placed. Also, replace any sprinkler that
has a cracked bulb or that has lost
liquid from its bulb (ref. Installation
Section Note).
The owner is responsible for the in-
spection, testing, and maintenance of
their fire protection system and de-
vices in compliance with this docu-
ment, as well as with the applicable
standards of the National Fire Protec-
tion Association (e.g., NFPA 25), in
addition to the standards of any other
authorities having jurisdiction. The in-
stalling contractor or sprinkler manu-
facturer should be contacted relative
to any questions.
It is recommended that automatic
sprinkler
systems
be
inspected,
tested, and maintained by a qualified
Inspection Service.
P S N 5 1 — X X X — X — X X X
155°F/68°C
155
TEMPERATURE
RATING
888
1
SPRINKLER
FINISH
TABLE B
PRODUCT SYMBOL NUMBER SELECTION
16.8 K-FACTOR MODEL F892 PENDENT AND UPRIGHT SPRINKLERS
WITH 3/4 INCH NPT CONNECTIONS
SR UPRIGHT
286
200°F/93°C
200
286°F/141°C
NATURAL BRASS
TYPE
SR PENDENT
889
FIGURE B
W-TYPE 8 SPRINKLER
WRENCH
OBSOLETE
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