DESIGN CRITERIA
The 5.6 K-Factor, Model F960/Q-48
QR-EC Dry Horizontal Sidewall Sprin-
klers must only be installed in accord-
ance with the criteria given in Table A.
The F960/Q-48 Dry Horizontal Side-
wall 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.
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 binding of the inlet Plug or
insufficient engagement of the inlet
pipe threads with consequent leakage.
Branch, cross, and feedmain piping
that is connected to dry horizontal
sidewall 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.
The outer piece of the Escutcheon
Plate cannot be used to hold the
F960/Q-48 Sprinkler in position. Pipe
support must be provided in accord-
ance with the minimum requirements
of the National Fire Protection Asso-
ciation with respect to armovers and
wall mounted sidewall sprinklers.
When dry horizontal sidewall sprin-
klers are to be used on wet pipe sprin-
kler systems protecting areas subject
to freezing temperatures (e.g., coolers
or freezers), consideration must be
given to the appropriate length of the
sprinkler that will prevent freezing of
the water in the connecting pipes, due
to conduction. The following are the
minimum recommended lengths be-
tween the face of the F960/Q-48 sprin-
kler fitting and the outside surface of
the protected area, when the tempera-
ture surrounding the wet pipe sprinkler
system is maintained at a minimum
temperature of 40°F:
•
6 inches when the temperature
within the protected area is 0°F;
•
12 inches when the temperature
within the protected area is -20°F;
•
18 inches when the temperature
within the protected area is -40°F;
and,
•
24 inches when the temperature
within the protected area is -60°F.
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 individual val-
ues.
NOTE
When the F960/Q-48 Sprinklers
penetrate a wall 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.
INSTALLATION
NOTES
The Model F960/Q-48 QR-EC Dry
Horizontal Sidewall Sprinkler must
only be installed in fittings that meet
the requirements of the Warning and
Design Criteria sections.
Refer to the Design Criteria section for
other important requirements regard-
ing piping design and sealing of the
space around the Sprinkler Casing.
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 for the 135°F/57°C and
155°F/68°C temperature ratings.
The sprinkler fitting should be located
so that the face-of-fitting to mounting
surface distance is within plus or mi-
nus 1/4 inch of the sprinkler order
length. The remaining escutcheon
plate adjustment can then be used to
compensate for the possible manufac-
turing variations in the take-out of the
fittings, as well as in the make-in of the
sprinklers (as per mitted by ANSI
B1.20.1).
The F960/Q-48 must be installed with
a deflector to ceiling distance of 4 to 12
inches. To meet this requirement, the
centerline of the sprinkler waterway
(Ref. Fig, A) must be between 4-7/16
and 12-7/16 inches below the ceiling.
The Model F960/Q-48 must be in-
stalled with the centerline of the water-
way horizontal and perpendicular to
the back wall surface. The word “TOP”
on the deflector must face upwards
toward the ceiling.
-3-
FIGURE D
ESCUTCHEON OUTER PIECE
INSTALLATION PROCEDURE
FIGURE C
LEVELING OF
SPRINKLER FITTING
AND DEFLECTOR
FIGURE B
W-TYPE 7 SPRINKLER WRENCH
OBSOLETE
Содержание Gem F960/Q-48
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