Screw is bronze. The Water Tube is
brass, and the Bulb Seat, Spring,
and Yoke are stainless steel. The
Guide Tube sub-assembly is con-
structed of stainless steel and brass.
The two pieces of the three available
Escutcheons are low carbon steel.
Design
Criteria
The Model S170 Dry Sprinklers are
to be installed in the 1 inch NPT out-
let 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 1. Only use maximum
2-1/2 inch size reducing tee’s for dry
pipe sprinkler systems.
NOTES
Do not install the Model S170 into
any other type fitting without first con-
sulting the Technical Services De-
partment. Failure to use the appropri-
ate 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, insuffi-
cient engagement of the inlet pipe
threads with consequent 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 formation of ice over the Inlet.
Branch, cross, and feedmain piping
connected to Dry Sprinklers and sub-
ject to freezing temperatures must
be pitched for drainage in accord-
ance with the minimum requirements
of the National Fire Protection Asso-
ciation for dry pipe sprinkler systems.
When Dry Sprinklers are to be used
in wet pipe sprinkler systems protect-
ing areas subject to freezing tem-
peratures (e.g., sprinkler drops into
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. When the tem-
perature surrounding the wet pipe
sprinkler system is maintained at a
minimum temperature of 40°F/4°C,
the following are the minimum recom-
mended lengths between the face of
the sprinkler fitting and the outside
surface of the protected 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
•
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 mini-
mum recommended length from the
face of the fitting to the outside of
the protected area may be deter-
mined by interpolating between the
indicated values.
NOTE
When Dry Sprinklers penetrate a ceil-
ing into an area subject to freezing,
the clearance space around the
Sprinkler Casing must be completely
sealed in order to prevent the leak-
age of moist air into the freezing
area which might result in the forma-
tion 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 com-
ponents and, consequently, either
an inadvertent operation of the sprin-
kler or impaired operation due to re-
duced thermal sensitivity.
SPRINKLER FINISH
Temperature
Rating
Bulb
Color Code
Natural
Brass
Chrome
Plated
135°F/57°C
155°F/68°C
175°F/79°C
Red
Yellow
Orange
w/ Standard Escutcheon
“A” Order Length:
2-1/2 to 48 inches
(63,5 to 1219,2 mm)
w/ Recessed Escutcheon
“A” Order Length:
3-1/2 to 48 inches
(88,9 to 1219,2 mm)
1, 2, 3
Notes:
1. Listed by Underwriters Laboratories, Inc.
2. Listed by Underwriters’ Laboratories of Canada.
3. Approved by Factory Mutual Research Corporation. (FM limits Quick Response Sprinklers to wet pipe systems.)
*
Available in Standard Response Only.
N/A - Not Available.
Table A
Model S170 Standard and Quick Response Dry Pendent Sprinkler
Laboratory Listings and Approvals
Natural
Brass
Chrome
Plated
1, 2, 3
1, 2, 3
200°F/93°C
286°F/141°C
Green
Blue
w/ Deep Ceiling Escutcheon
“A” Order Length:
1/2 to 46 inches
(12,7 to 1168,4 mm)
Natural
Brass
Chrome
Plated
1, 2, 3
N/A
360°F/182°C*
Mauve
N/A
Polyester
(All
Colors)
Polyester
(All
Colors)
Polyester
(All
Colors)
1, 2
1, 2
1, 2
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2, 3
1, 2
1, 2
1, 2, 3
1, 2, 3
1, 2
OBSOLETE
