Tyco Fire Product Gem F960, Инструкция по эксплуатации

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lowing formula:
where the nominal discharge
coeffcient “K” equals 5.5 (79,2); and,
“p” equals the residual pressure in psi
(bar). Listing standards permit the ac-
tual value of “K” to vary from 5.3 to 5.8
(76,4 to 83,6); however, for hydraulic
calculations a K-factor of 5.5 (79,2) is
to be applied.
Figure C illustrates the F960 assembly.
The Plug and Inlet are brass per ASTM
B16 (C36000), and the O-ring is sili-
cone rubber. The Casing is galvanized
carbon steel per SAE 1008 Class M.
The Frame is bronze per ASTM B62
(C83600), the Deflector is brass per
ASTM B36 (C22000), the Compres-
sion Screw is bronze per ASTM B140
(C31400).The Water Tube is brass per
ASTM B135 (C33000). The Bulb Seat,
Spring, and Yoke are all Type 302 stain-
less steel. The Guide Tube sub-assem-
bly is constructed of Type 302 stainless
steel and brass per ASTM B16
(C31600).
The two pieces of the Standard, Deep
Ceiling, and Recessed Escutcheons
are low carbon steel. The inner piece
of each type escutcheon is perma-
nently secured to the F960 assembly.
SYSTEM DESIGN
The F960 Dry Sprinklers are to be
installed in the 1 inch NPT outlet of a
malleable iron threaded tee fitting per
ANSI B16.3 or cast iron threaded tee
fitting per ANSI B16.4 with the end
sprinkler fitting on a branch line to be
plugged as shown in Figure A; or, in-
stalled in the side outlet of a Gruvlok®
Figure 7105 Sock-It™ x 1 inch NPT
side outlet fitting manufactured by
Grinnell Corporation. Only use maxi-
mum 2-1/2 inch size reducing tee’s for
dry pipe sprinkler systems.
NOTES
Do not install the F960 into any other
type fitting without first consulting
the Technical Data Department. Fail-
ure to use the appropriate fitting may
result in: failure of the sprinkler to
properly operate due to formation of
ice over the inlet Plug or binding of the
inlet Plug; or, insufficient engagement
of the inlet pipe threads with conse-
quent leakage.
In the case of a dry pipe sprinkler
system subject to freezing, the use of a
fitting of other than the types specified
may result in failure of the sprinkler
to properly operate due to the forma-
tion of ice over the F960 Inlet.
Branch, cross, and feedmain piping
connected to F960 Dry Sprinklers and
subject to freezing temperatures must
be pitched for drainage in accordance
with the minimum requirements of the
National Fire Protection Association
for dry pipe sprinkler systems.
When F960 Dry Sprinklers are to be
used in wet pipe sprinkler systems pro-
tecting areas subject to freezing tem-
peratures (e.g., sprinkler drops into
freezers or sprinkler sprigs into attics),
consideration must be given to the ap-
propriate length of the sprinkler that
will prevent freezing of the water in the
connecting pipes, due to conduction.
When the temperature surrounding
the wet pipe sprinkler system is main-
tained at a minimum temperature of
40°F/4°C, the following are the mini-
mum recommended lengths between
the face of the F960 sprinkler fitting
and the outside surface of the pro-
tected area (i.e., length exposed to
minimum ambient of 40°F/4°C):
•
12 inches (300 mm) when the tem-
perature within the protected area is
-20°F/-29°C;
•
18 inches (450 mm) when the tem-
perature within the protected area is
-40°F/-40°C; and,
•
24 inches (600 mm) when the tem-
perature within the protected area is
-60°F/-51°C.
For protected area temperatures be-
tween those given above, the minimum
recommended length from the face of
the fitting to the outside of the pro-
tected area may be determined by in-
terpolating between the indicated val-
ues.
NOTE
When the F960 Pendent, Deep Ceiling
Pendent, or Recessed Pendent Sprin-
klers penetrate a ceiling into an area
subject to freezing, the clearance space
around the Sprinkler Casing must be
completely sealed, in order to prevent
the leakage of moist air into the freez-
ing area which might result in the
formation of condensate around the
Frame, Deflector, Bulb Seat, or Bulb.
Failure to prevent the formation of
condensate could result in the build-
up of ice around the releasing compo-
nents and, consequently, either an in-
advertant operation of the sprinkler
or, impaired operation due to reduced
thermal sensitivity.
Q K p =
† DuPont Registered Trademark
FIGURE D
PENDENT, DEEP CEILING PENDENT, AND RECESSED PENDENT CEILING DETAILS
PENDENT
(With Two-piece
Standard Escutcheon)
RECESSED PENDENT
(With Two-piece
Recessed Escutcheon)
DEEP CEILING PENDENT
(With Two-piece
Deep Ceiling Escutcheon)
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OBSOLETE