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January 20, 2006
Viking technical data may be found on
The Viking Corporation's Web site at
http://www.vikingcorp.com.
The web site may include a more recent
edition of this technical data page.
6. GUARANTEES
For details of warranty, refer to Viking's
current list price schedule or contact The
Viking Corporation directly.
7. DESIGN & INSTALLATION
(Also refer to the chart on page 121 b.)
WARNING: Viking sprinklers are manu-
factured and tested to meet rigid require-
ments of the approving agency. The
sprinklers are designed to be installed
in accordance with recognized instal-
lation standards. System design must
be based on ESFR design guidelines
described in the latest edition of Viking
technical data, applicable FM Global
Loss Prevention Data Sheets, the latest
NFPA Standards, the Authorities Having
Jurisdiction, and also with the provi-
sions of governmental codes, ordinanc-
es, and standards whenever applicable.
Deviation from the standards or any
alteration to the sprinkler after it leaves
the factory including, but not limited to:
painting, plating, coating or modification,
may render the sprinkler inoperative and
would automatically nullify the approval
and any guarantee made by The Viking
Corporation.
A. Sprinklers must be handled with care.
They must be stored in a cool, dry
place in their original shipping con-
tainer. Never install sprinklers that
have been dropped or damaged in
any way or exposed to temperatures
in excess of the maximum ambient
temperature allowed. Such sprinklers
should be destroyed immediately.
NOTE: Wet-pipe systems must be
provided with adequate heat.
B. Viking recommends installing one
style of sprinklers (either pendent
or upright) throughout ESFR sys-
tems. However, provided the fusi-
ble elements are installed within
the distance below the ceiling al-
TECHNICAL DATA
lowed by the installation stand-
ards, and when acceptable to the
Authority
Having
Jurisdiction,
Viking considers the practice of
mixing upright and pendent ESFR
sprinklers to be acceptable.
C. Sprinklers must be installed after
the piping is in place at the ceil-
ing to prevent mechanical damage.
NOTE: No sprig is required for
sprinkler pipe sizes up to and in-
cluding 3" (76,2 mm) nominal I.D.
Before installing, be sure to have the
appropriate sprinkler model and style,
with the correct orifice size, tempera-
ture rating, and response character-
istics.
D. With the sprinkler contained in the
protective plastic cap, apply a small
amount of pipe-joint compound or
tape to the male threads only, while
taking care not to allow a build-up of
compound in the sprinkler orifice.
E.
Use
ONLY
sprinkler
05118CW/B (shown in Figure 1) for
installing ESFR Sprinkler VK520!
With the sprinkler contained in the
protective cap, install the sprinkler
onto the piping by applying sprinkler
wrench 05118CW/B to the sprinkler
wrench flats only, while taking care
not to damage the sprinkler operat-
ing parts.
•
DO NOT use any other wrench, as
this could damage the unit.
•
DO NOT use the sprinkler deflec-
tor or operating element to start or
thread the sprinkler into a fitting.
•
DO NOT exceed 50 ft. lbs. of torque
(hand tight, plus approximately two
full turns with the wrench) to install
these sprinklers. Higher levels of
torque may distort the sprinkler
inlet with consequent leakage or
impairment of the sprinkler.
F. After installation, the entire sprin-
kler system must be tested. The
test must be conducted to com-
ply with the Installation Standards.
Make sure the sprinkler has been prop-
erly tightened. If a thread leak occurs,
normally the unit must be removed,
new pipe-joint compound or tape ap-
ESFR UPRIGHT SPRINKLER
SIN VK520 (K = 14.0)
plied, and then reinstalled. This is due
to the fact that when the joint seal
is damaged, the sealing compound
or tape is washed out of the joint.
Immediately
aged units, using sprinkler wrench
05118CW/B only.
G. After installation and testing and
repairing of all leaks, remove the
protective caps from the sprin-
klers. Do NOT use any type of tool
to remove the cap. Remove the cap
by hand: turn it slightly and pull it
off the sprinkler. When removing
caps, use care to prevent dislodg-
ing or damaging sprinkler ejector
spring and fusible element. THE
CAPS MUST BE REMOVED FROM
SPRINKLERS BEFORE PLACING
THE SYSTEM IN SERVICE!
8. MAINTENANCE
NOTICE: The owner is responsible
for maintaining the fire protection sys-
wrench
tem and devices in proper operating
condition. For minimum maintenance
and inspection requirements, refer to
this document and the NFPA standard
that describes care and maintenance
of sprinkler systems. In addition, the
Authorities Having Jurisdiction may
have additional maintenance, testing,
and inspection requirements that must
be followed.
A. Sprinklers must be inspected on a
regular basis for corrosion, mechanical
damage, obstructions, paint, etc. The
frequency of inspections may vary due
to corrosive atmosphere, water sup-
plies, and activity around the device.
B. Sprinklers that have been painted
or mechanically damaged must be
replaced
immediately.
showing signs of corrosion shall be
tested and/or replaced immediately
as required. Refer to the Installation
Standards (e.g., NFPA 25) and the
Authorities Having Jurisdiction for the
specified period of time after which
testing and/or replacement is re-
quired. Sprinklers that have operated
cannot be reassembled or reused,
but must be replaced. When replacing
Sprinkler 121 c
replace
any
dam-
Sprinklers
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