Viking M Installation page 3

September 16, 2005
Dimension:
1. Determine dis-
tance from face
of tee to base of
Outside
sprinkler.
diameter:
2. Round up to the
1-5/16"
next higher ½"
(33,4 mm)
(12,7 mm) in-
[same as
crement
1" (25 mm)
tween 3" (76,2
Schedule
mm ) a n d 4 7 "
40 pipe].
(1 194 mm).
1-5/8"
(48,3 mm)
Figure 2
Plain Barrel Dry Pendent Sprinkler
threaded tee fittings that meet the dimen-
sional requirements of ANSI B16.4 (Class
125), even at branch line ends. The
threaded end of the dry sprinkler is de-
signed to allow the seal to penetrate and ex-
tend into the fitting to a predetermined depth.
This prevents condensation from accumu-
lating and freezing over the sprinkler seal.
1. DO NOT install the dry pendent sprin-
kler into a threaded elbow, coupling,
or any other fitting that could interfere
with thread penetration. Such instal-
lation would damage the brass seal.
2. DO NOT install the dry pendent sprin-
kler into a coupling or fitting that will
allow condensation to accumulate
above the seal, when located in an
area subject to freezing.
3. NEVER try to modify the dry pendent
sprinkler. The sprinklers are manu-
factured for a specific "A" dimension
and cannot be modified.
D. The sprinkler must be installed after the
piping is in place to prevent mechanical
damage. Before installation, be sure to
have the appropriate model and style,
with the correct "A" dimension, orifice
size, temperature rating, and response
characteristics. Keep sprinklers with
protective caps or bulb shields con-
tained within the caps or shields during
installation and testing, and any time
the sprinkler is shipped or handled.
1. Apply a small amount of pipe-joint
compound or tape to the male
threads only, taking care not to al-
low a build-up of compound over the
brass inlet and seal.
2. Install the sprinkler on the piping us-
ing the special dry sprinkler wrench
only, while taking care not to dam-
age the sprinkler. DO NOT use a
pipe wrench on the barrel of the dry
pendent sprinkler. NOTE: Sprin-
TECHNICAL DATA
For "A"
Minimum ceiling hole size:
2-1/8" (54 mm) diameter.
Maximum ceiling hole size:
2-1/2" (63,5 mm) diameter.
be-
5/16" (7,9 mm)
5/16" (7,9 mm)
Minimum: 1" (25,4 mm)
Maximum: 1-5/8" (41,2 mm)
Figure 3:
Adjustable Recessed Dry Pendent Sprinkler with up to 5/8" (15,8 mm) of Adjustment
klers with protective caps or bulb
shields must be contained within the
caps or shields before applying
pipe-joint compound or tape.
3. Escutcheons for adjustable standard
and adjustable recessed dry pen-
dent sprinklers can be installed after
the sprinkler has been installed onto
the piping. Escutcheons slip on
from below the ceiling.
E. After installation, the entire sprinkler
system must be tested. The test must
be conducted to comply with the Instal-
lation Standards.
Make certain the unit has been properly
tightened. If a thread leak should occur,
normally the unit must be removed, new
pipe-joint compound or tape applied, and
then reinstalled. This is due to the fact
that when the joint seal leaks, the sealing
compound is washed out of the joint.
F. Remove plastic protective sprinkler
caps or bulb shields AFTER the ceiling
finish work is completed where the
sprinkler is installed and there no lon-
ger is a potential for mechanical dam-
age to the glass bulbs. To remove the
bulb shields, simply pull the ends of the
shields apart where they are snapped to-
gether. To remove caps, turn the caps
slightly and pull them off the sprinklers.
SPRINKLER
SHIELDS MUST BE REMOVED FROM
SPRINKLERS BEFORE PLACING THE
SYSTEM IN SERVICE!
G. Wet pipe systems supplying dry pen-
dent sprinklers must be provided with
adequate heat. Refer to appropriate in-
stallation standards.
7. MAINTENANCE
NOTICE: The owner is responsible for
maintaining the fire-protection system and
devices in proper operating condition. For
Adjustment:
3-1/16"
(77,8 mm)
CAPS OR BULB
Sprinkler 101 c
STANDARD RESPONSE
DRY PENDENT SPRINKLERS
For "A" Dimension:
1. Determine the distance from
face of tee to finished ceil-
ing.
2. Round to nearest ¼" (6,35
mm) between 3-1/4" and
47-1/2" (82,5 mm and 1 207
mm).
NOTE: The sprinkler will be re-
cessed approximately 5/16"
(7,9 mm) above the finished
ceiling with 5/8" (15,8 mm) of
vertical adjustment avail-
able.
Finished Ceiling
minimum maintenance and inspection re-
quirements, refer to the National Fire Pro-
tection Association standard that de-
scribes care and maintenance of sprinkler
systems. In addition, the Authority Having
Jurisdiction may have additional mainte-
nance, testing, and inspection require-
ments that must be followed.
A. The sprinklers must be inspected on a reg-
ular basis for signs of corrosion, mechani-
cal damage, obstructions, paint, etc. The
frequency of the inspections may vary
due to corrosive atmospheres, water sup-
plies, and activity around the device.
B. Sprinklers that have been field painted,
caulked, or mechanically damaged must
be replaced immediately. Sprinklers
showing signs of corrosion shall be tested
and/or replaced immediately as required.
Installation standards require sprinklers to
be tested and, if necessary, replaced after
a specified term of service. Refer to the in-
stallation standards (e.g., NFPA 25) and
the AHJ for the specified period of time af-
ter which testing and/or replacement is re-
quired. Never attempt to repair or reas-
semble a dry pendent sprinkler. Sprin-
klers that have operated cannot be reas-
sembled or re-used, but must be re-
placed. When replacing sprinklers, use
only new sprinklers.
C. The sprinkler discharge pattern is criti-
cal for proper fire protection. Nothing
should be hung from, attached to, or
otherwise obstruct the discharge pat-
tern. All obstructions must be immedi-
ately removed or, if necessary, addi-
tional sprinklers installed.
D. When replacing existing sprinklers, the
system must be removed from service.
Refer to the appropriate system de-
scription and/or valve instructions.
Prior to removing the system from ser-
vice, notify all AHJs. Consideration