Viking VK250 Instruction manual

1. PRODUCT NAME
Viking Standard Response Ordinary
Hazard Dry Horizontal Sidewall Sprin-
klers VK250, VK252, and VK254
•Adjustable Recessed
•Adjustable Standard
•Plain Barrel
Available since 2005.
2. MANUFACTURER
The Viking Corporation
210 N. Industrial Park Road
Hastings, Michigan 49058, USA
Telephone: [phone]
[phone]
Fax: [phone]
e-mail: [email protected]
3. PRODUCT DESCRIPTION
The Viking Standard Response Ordi-
nary Hazard Dry Horizontal Sidewall
Sprinklers are thermosensitive glass-
bulb spray sprinklers, suitable for use in
areas subject to freezing. They are de-
signed for dry systems and preaction
systems where it is necessary to prevent
water or condensation from entering the
supply nipple before the sprinkler oper-
ates. They may also be installed in
spaces subject to freezing and supplied
from a wet system in an adjacent heated
area. Large orifice dry sprinklers allow
greater flows at lower pressures than
standard orifice dry sprinklers.
The sprinkler is of the Model M design
with a 5 mm glass bulb and horizontal
sidewall deflector. The Viking Standard
Response Ordinary Hazard Dry Hori-
zontal Sidewall Sprinkler is available in
several finishes and temperature ratings
to meet design requirements.
The assembly features a sealed brass
inlet and a durable, threaded steel barrel
with an electrodeposited epoxy base
coating. The seal at the threaded end of
the assembly is held in place by force
transmitted from the compression
screw, through the glass bulb and inter-
nal parts, onto a special sealing spring.
During fire conditions, the heat-sensitive
liquid in the glass bulb expands, causing
the glass to shatter, releasing the inter-
nal parts to open the waterway. Water
flowing through the sprinkler orifice
strikes the sprinkler deflector, forming a
uniform spray pattern to extinguish or
control the fire.
The Viking Standard Response Ordi-
nary Hazard Dry Horizontal Sidewall
Sprinkler may be installed with the barrel
exposed (refer to Figure 4 on page 102
k), or with one of two escutcheon styles:
•For recessed installations, a recessed
style escutcheon with up to 5/8" (15,8
mm) adjustment (see Figure 1 on page
102 I), is available.
•For standard installations, the sprin-
kler is available with an adjustable,
surface-mounted escutcheon, fin-
ished to allow up to 2" (50,8 mm) of ad-
justment (see Figures 2 and 3 on page
102 j).
Both escutcheon styles slide over the
sprinkler deflector, allowing installation
of the escutcheon after the wall finish is
applied.
Viking dry horizontal sidewall sprinklers
are available in ¼" (6,35 mm) incre-
ments for the recessed style, and in ½"
(12,7 mm) increments for the adjustable
standard escutcheon style, and the plain
barrel style, installed with no escutch-
eon.
These sprinklers may be ordered in min-
imum lengths from 1-1/2" (38,1 mm) for
the adjustable standard style, 3" (76,2
mm) for the plain barrel style, and 3-1/4"
(82,5 mm) for the adjustable recessed
style. They have listings and approvals
with a maximum length of 45-1/2" (1 156
mm) for the adjustable standard style*,
47" (1 194 mm) for the plain barrel style*,
and 47-1/2" (1 207 mm) for the adjust-
able recessed style*.
* Lengths exceeding the standard length are avail-
able, with no approvals, on a “made-to-order” ba-
sis:
•Recessed Dry HSW up to 65-1/2” (1 664 mm).
• Adjustable Standard Dry HSW up to 63-1/2” (1
613 mm).
• Plain Barrel Dry HSW up to 65” (1 651 mm).
Contact the manufacturer for more information.
4. TECHNICAL DATA
LISTINGS
Refer to the Approval Chart on page 102 I.
Glass-bulb fluid temperature rated to
-65 °F (-55 °C).
Rated to 175 psi (1 207 kPa) water work-
ing pressure.
Thread Size: 1" NPT or 25 mm BSP
Minimum Operating Pressure: 7 psi
(48,3 kPa)
Nominal K-Factor: 8.0 U.S. (11,5 met-
ric**) for lengths up to 20". For
lengths exceeding 20", refer to Fig-
ure 5 on page 102 k.
**Metric K-Factor shown is for use when pressure is
measured in kPa. When pressure is measured in
BAR, multiply the metric K-Factor shown by 10.0.
Factory tested pneumatically at 100 psi
(685 kPa).
SPRINKLER MATERIALS
Frame: Brass Castings UNS-C84400
Deflector: Brass UNS-C51000
Bulb: Glass, nominal 5 mm diameter
Belleville Spring Sealing Assembly:
Nickel Alloy, coated on both sides
with Teflon Tape
Spring Base: Brass UNS-C31400 or
UNS-C31600
Screw: Brass UNS-C36000
Pip Cap: Brass UNS-C36000
Pip Cap Adapter: Brass UNS-C36000
Orifice: Copper UNS-C21000
Gasket: Buna-N
Tube: ERW Hydraulic Steel Tube
Sprinkler 102 h
September 16, 2005
TECHNICAL DATA
STANDARD RESPONSE
ORDINARY HAZARD
DRY HORIZONTAL SIDEWALL
SPRINKLERS (VK250, VK252, VK254)
Form No. F_010105
Note: Units of measure in parentheses may be approximations.
Adjustable
Standard
Plain
Barrel
Adjustable
Recessed
Sprinkler Temperature
Classification
Nominal Sprinkler Temperature
Rating (Fusing Point)
Maximum Ambient
Ceiling Temp.1
Bulb
Color2
Ordinary 155 °F (68 °C) 100 °F (38 °C) Red
Intermediate 175 °F (79 °C) 150 °F (65 °C) Yellow
Intermediate 200 °F (93 °C) 150 °F (65 °C) Green
High 286 °F (141 °C) 225 °F (107 °C) Blue
1Based on NFPA-13. Other limits may apply, depending on fire loading, sprinkler location,
and other requirements of the Authority Having Jurisdiction. Refer to specific installation
standards.
2Frames of decorative sprinklers are not color coded. The temperature rating is stamped on
the deflector.
Table 1
Replaces page 102 h-l, dated Sept. 8, 2005 (corrected to
remove FM Approval and revised the K-Factor graph).
OBSOLETE

Inlet: Brass UNS-C31600
Support (Internal): Brass UNS-C36000
Barrel: Steel Pipe UNS-G10260, Elec-
trodeposited Epoxy Base finish
Sleeve: (for Adjustable Standard style
only): Brass UNS-C26000 or
UNS-C26800
ESCUTCHEON MATERIALS
1. Adjustable Standard Dry Escutcheon:
Brass UNS-C26000 or UNS-C26800
2. Recessed Dry Escutcheon: Cold
Rolled Steel UNS-G10080
ACCESSORIES
Standard Dry Sprinkler Wrench: Part
No. 07297W/B
Recessed Dry Sprinkler Wrench: Part
No. 07565W/B***
***Requires a separate ½" ratchet (not available
from Viking).
Replacement Escutcheons:
1. Adjustable Standard Dry Escutcheon:
Base Part No. 08086F
2. Recessed Dry Escutcheon: Base Part
No. 05459A
AVAILABLE FINISHES
•Recessed: Chrome-Enloy®(patents
pending) or White Polyester
•Standard Adjustable: Chrome-Enloy®
or White Polyester sprinkler with a
Chrome-Enloy®Sleeve and Escutch-
eon
•Plain Barrel: Chrome-Enloy®or Brass
(sprinkler only)
5. ORDERING INFORMATION
For proper shipment, specify model, fin-
ish, temperature rating, escutcheon
type, and length (“A” Dimension. Dry
horizontal sidewall sprinklers are or-
dered in specific lengths noted as the “A”
dimension (see Figures 1 through 4).
Sprinkler 102 i
TECHNICAL DATA
Figure 1: Adjustable Recessed Ordinary Hazard Dry Horizontal Sidewall Sprinkler VK254
Minimum wall opening size:
2-1/8" (54 mm) diameter.
Maximum wall opening size:
2-1/2" (63,5 mm) diameter.
5/16" (7,9 mm) Outward Adjustment
5/16" (7,9 mm) Inward Adjustment
1-7/8" (47,6 mm) Minimum
2-1/2" (63,5 mm) Maximum
Available
Adjustment
3-1/16"
(77,8 mm)
5/8" (16 mm)
4" (102 mm) Minimum
12" (305 mm) Maximum
Ceiling
Wall
For "A" Dimension:
1. Determine the distance from face of tee to face
of finished wall.
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 recessed approximately
5/16" (7,9 mm) with 5/8" (15,8 mm) horizontal
adjustment
available.
Approval Chart
Standard Response Ordinary Hazard Dry
Horizontal Sidewall Sprinklers
Thread Size Sprinkler Description
Nominal K-factor4
Order Length Increment3Listings2
NPT BSP Sprinkler Style Sprinkler
Base Part No.1SIN Inches mm cULus5FM NYC
1" – Adjustable Standard 13172 VK252 8.0 U.S. (11,5 metric)
for lengths up to 20".
For lengths exceeding
20", refer to Figure 5
on page 102 k.
½" 12,7 A1 – –
– 25 mm 13178 VK252 ½" 12,7 A1 – –
1" – Adjustable Recessed 13174 VK254 ¼" 6,35 B2 – –
– 25 mm 13180 VK254 ¼" 6,35 B2 – –
1" – Plain Barrel 13173 VK250 ½" 12,7 A3 – –
– 25 mm 13179 VK250 ½" 12,7 A3 – –
Approved Temperature Ratings
A - 155 °F (68 °C), 175 °F (79°C), 200 °F (93 °C), and 286 °F
(141 °C)
B - 155 °F (68 °C), 175 °F (79°C), and 200 °F (93 °C)
Available Approved Finishes and "A" Dimensions
1 - Chrome-Enloy®or White Polyester sprinkler with a Chrome-Enloy®Sleeve
and Escutcheon with "A" dimensions 1-1/2" to 45-1/2" (38,1 mm to 1 156 mm)
2 - Chrome-Enloy®or White with "A" dimensions 3-1/4" to 47-1/2" (82,5 mm to
1 207 mm)
3 - Chrome-Enloy®or Brass with "A" dimensions 3" to 47" (76,2 mm to 1 194
mm)
Footnotes
1Base part number is shown. For complete part number, refer to Viking's current price schedule.
2This table shows the listings and approvals available at the time of printing. Other approvals may be in process. Check with the manufacturer for
any additional approvals.
3Minimum length (A Dimension) is 1-1/2" (38,1 mm) for the adjustable standard style, 3" (76,2 mm) for the plain barrel style, and 3-1/4" (82,5
mm) for the adjustable recessed style. Maximum standard (approved) length is 45-1/2" (1 156 mm) for the adjustable standard style, 47" (1 194
mm) for the plain barrel style, and 47-1/2" (1 207 mm) for the adjustable recessed style.
4Metric K-Factors shown are for use when pressure is measured in kPa. When pressure is measured in BAR, multiply the metric K-Factor shown
by 10.0.
5Listed by Underwriters Laboratories Inc. for use in the U.S. and Canada.
NOTE: Viking Standard Response Ordinary Hazard Dry HSW Sprinklers must be positioned between 4" and 12" (102 mm and 305 mm) below
smooth, flat, horizontal ceilings, and not less than 4" (102 mm) from walls other than the wall in which they are installed. Keep the leading edge
of the deflector and the centerline axis of the sprinkler frame oriented parallel with the ceiling. Refer to the appropriate Installation Guide.
Temperature KEY
Finish
A1X Escutcheon (if applicable)
STANDARD RESPONSE
ORDINARY HAZARD
DRY HORIZONTAL SIDEWALL
SPRINKLERS (VK250, VK252, VK254)
September 16, 2005
OBSOLETE

The “A” dimension is the distance from
the face of the fitting (tee) to the finished
surface of the wall in which it is to be in-
stalled. The dry horizontal sidewall
sprinkler must be ordered and manufac-
tured specifically for one of three styles
of installation: with the adjustable re-
cessed escutcheon (see Figure 1), with
the adjustable standard escutcheon
(see Figures 2 and 3), or with the plain
barrel (see Figure 4). For limits of adjust-
ment for the recessed escutcheon, see
Figure 1. Details and limits of adjust-
ment for the standard escutcheon style,
with 2" (50,8 mm) of adjustment, are
shown in Figure 2.
6. INSTALLATION
WARNING: Viking sprinklers are manu-
factured and tested to meet the rigid re-
quirements of approving agencies. The
sprinklers are designed to be installed in
accordance with recognized installation
standards. Deviation from the standards
or any alteration to the sprinkler after it
leaves the factory including, but not lim-
ited to: painting, plating, coating, or
modification, may render the sprinkler
inoperative and will automatically nullify
the approval and any guarantee made
by The Viking Corporation.
A. Viking sprinklers are to be in-
stalled in accordance with the lat-
est edition of Viking technical
data, the latest standards of the
National Fire Protection Associa-
tion, FM Global, Loss Prevention
Council, Assemblee Pleniere, VdS
or other similar organizations, and
also with the provisions of gov-
ernmental codes, ordinances, and
standards, whenever applicable.
The use of dry horizontal sidewall
sprinklers may be limited due to
occupancy and hazard. Refer to
the Authority Having Jurisdiction
prior to installation.
B. Sprinklers must be handled with care.
They must be stored in a cool, dry
place in their original container.
Never install sprinklers that have
been dropped, damaged in any way,
or exposed to temperatures in ex-
cess of the maximum ambient tem-
perature allowed (refer to Table 1).
Such sprinklers should be destroyed.
Never install any glass-bulb sprinkler
if the bulb is cracked or if there is a
loss of liquid from the bulb. If a glass
bulb lacks the appropriate amount of
fluid, it should be set aside and re-
Sprinkler 102 j
TECHNICAL DATA
For “A” Dimension:
1. Determine the distance from face of the tee to
the finished face of the wall.
2. Round to nearest ½" (12,7 mm) between
1-1/2" and 45-1/2 (38,1 mm and 1 156 mm).
NOTE: The deflector will extend approximately
4-1/4" (108 mm) from wall with 2" [+/- 1" (25,4
mm)] of horizontal
adjustment available.
3-1/16"
(77,8 mm)
13/16"
(20,6 mm)
Minimum wall opening
diameter: 1-3/4" (44,45 mm).
Maximum wall opening
diameter: 2-1/4" (57 mm).
NOTE:
To locate deflector
at minimum distance
from wall, with no
adjustment available,
order the standard
dry horizontal side-
wall sprinkler 1" (25,4
mm) shorter than
the “A” dimension.
Slot
STEP 1: Align slot in escutch-
eon with the horizontal sur-
face of deflector as shown.
STEP 2: Push rounded end
of slot against the near
edge of deflector. Push far
side of escutcheon past the
deflector, toward the sleeve.
STEP 3: Pull escutch-
eon away from the near
edge of deflector. Move
near side of escutcheon
over the deflector.
STEP 4: Push and ro-
tate the escutcheon
onto the sleeve.
STEP 5: To minimize
visibility of the slot in the
escutcheon, position the
slot at top of sprinkler
sleeve.
Figure 3: Adjustable Standard Escutcheon Installation
Sleeve
Deflector Push and rotate Slot
Figure 2
Adjustable Standard Ordinary Hazard Dry Horizontal Sidewall Sprinkler VK252
Finished Wall
Finished Ceiling
4" (102 mm) Minimum
12" (305 mm) Maximum 3-1/4"
(82,6 mm)
Deflector at Minimum
Distance from Wall
Deflector at Maximum
Distance from Wall
5-1/4"
(133,4 mm)
NOTE:
To locate deflector
at maximum distance
from wall, with no
adjustment available,
order the standard
dry horizontal side-
wall sprinkler 1"
(25,4 mm) longer
than “A” dimension.
Sleeve diameter:
1-1/2" (38,1 mm).
Sleeve finish
matches the finish
of the escutcheon.
5/8"
(16 mm)
STANDARD RESPONSE
ORDINARY HAZARD
DRY HORIZONTAL SIDEWALL
SPRINKLERS (VK250, VK252, VK254)
September 16, 2005
OBSOLETE

turned to Viking (or an authorized Vi-
king distributor) for analysis as soon
as possible. If the sprinkler is not re-
turned to Viking, it should be immedi-
ately destroyed.
C. Viking Standard Response Dry Hori-
zontal Sidewall Sprinklers are not in-
tended for use in corrosive environ-
ments. Use only sprinklers listed for
corrosive environments when sub-
ject to corrosive atmospheres.
WARNING: Viking dry sprinklers are
to be installed in the 1" outlet or run of
malleable or ductile iron threaded tee
fittings that meet the dimensional re-
quirements of ANSI B16.3 (Class
150), or cast iron threaded tee fittings
that meet the dimensional require-
ments of ANSI B16.4 (Class 125),
even at branch line ends. The
threaded end of the dry sprinkler is
designed to allow the seal to pene-
trate and extend into the fitting to a
predetermined depth. This prevents
condensation from accumulating and
freezing over the sprinkler seal.
1. DO NOT install the dry sidewall
sprinkler into a threaded elbow,
coupling, or any other fitting that
could interfere with thread pene-
tration. Such installation will dam-
age the brass seal.
2. DO NOT install the dry sidewall
sprinkler into a coupling or fitting
that will allow condensation to ac-
cumulate above the seal, when lo-
cated in an area subject to freez-
ing.
3. NEVER try to modify the dry hori-
zontal sidewall sprinkler. The
sprinklers are manufactured for
specific “A” dimensions and can-
not be modified.
D. The sprinkler must be installed after
the piping is in place to prevent me-
chanical damage. Keep sprinklers
with protective caps or bulb shields
contained within the caps or shields
during installation and testing, and
any time the sprinkler is shipped or
handled.
1. Before installing the sprinkler,
make certain the “A” dimension is
correct and the sprinkler is the ap-
propriate model and style, orifice
size, and temperature rating.
2. 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. NOTE:
Sprinklers with protective caps or
bulb shields must be contained
within the caps or shields before
applying pipe-joint compound or
tape.
3. Install the dry sidewall sprinkler on
the piping using the special dry
sprinkler wrench only, while tak-
ing care not to damage the sprin-
kler. DO NOT use a pipe wrench
on the barrel of the dry sidewall
sprinkler. A pipe wrench may
damage the barrel finish.
4. To install the escutcheon for the
adjustable standard style dry hori-
zontal sidewall sprinkler, refer to
Figure 3.
E. After installation, the entire sprinkler
system must be tested. The test must
be conducted to comply with the in-
stallation standards.
Make sure the sprinkler has been
properly tightened. If a thread leak
occurs, normally the sprinkler must
be removed, new pipe-joint com-
pound or tape applied, and then rein-
stalled. This is due to the fact that
when the joint seal is damaged, the
sealing compound or tape is washed
out of the joint.
F. Remove plastic protective sprin-
kler caps and bulb shields AFTER
the wall finish work is completed
where the sprinkler is installed
Sprinkler 102 k
TECHNICAL DATA
For "A" Dimension:
1. Determine the distance from the face of tee to
the base of sprinkler.
2. Round to next higher ½" (12,7 mm) increment
between 3" and 47" (76,2 mm and 1 194 mm).
Outside diameter: 1-5/16"
(33,4 mm). [Same as 1"
(25 mm) Schedule 40 pipe].
2-1/4"
(57,2 mm)
4" (102 mm) Minimum
12" (305 mm) Maximum
Do not exceed 6" (152 mm).
Do not recess wrench boss.
5/8" (16 mm)
Figure 4: Plain Barrel Ordinary Hazard Dry Horizontal Sidewall Sprinkler VK250
Ceiling
Wall
September 16, 2005
Metric K-Factors are for use when pressure is measured in kPa.
When pressure is measured in BAR, multiply the metric K-Factor shown by 10.0.
Figure 5: K-Factor/Length Graph for Large Orifice Dry Horizontal Sidewall
Sprinklers for lengths from 20" to 48" (508 mm to 1 219 mm).
Note: For lengths up to 20" (508 mm), the nominal
K-Factor is 8.0 U.S. (11,5 metric).
U.S. K Factor
Metric K-Factor
Lengths exceeding the standard length are available, with no approvals,
on a “made-to-order” basis. Contact the manufacturer.
STANDARD RESPONSE
ORDINARY HAZARD
DRY HORIZONTAL SIDEWALL
SPRINKLERS (VK250, VK252, VK254)
OBSOLETE

and there no longer is a potential
for mechanical damage to the
glass bulbs. To remove the bulb
shields, simply pull the ends of the
shields apart where they are
snapped together. To remove caps,
turn the caps slightly and pull them off
the sprinklers. SPRINKLER CAPS
AND BULB SHIELDS MUST BE
REMOVED FROM SPRINKLERS
BEFORE PLACING THE SYSTEM
IN SERVICE!
G. Wet pipe systems supplying dry hori-
zontal sidewall sprinklers must be
provided with adequate heat. Refer
to appropriate installation standards.
7. MAINTENANCE
NOTICE: The owner is responsible for
maintaining the fire-protection system
and devices in proper operating condi-
tion. For minimum maintenance and in-
spection requirements, refer to the ap-
propriate NFPA standard that describes
care and maintenance of sprinkler sys-
tems. In addition, the Authority Having
Jurisdiction may have additional mainte-
nance, testing, and inspection require-
ments that must be followed.
A. Sprinklers must be inspected on a
regular basis for signs of corrosion,
mechanical damage, obstructions,
paint, etc. The frequency of inspec-
tions may vary due to corrosive atmo-
spheres, water supplies, and activity
around the device.
B. Sprinklers that have been field
painted, caulked, or mechanically
damaged must be replaced immedi-
ately. Sprinklers showing signs of
corrosion shall be tested and/or re-
placed immediately as required. In-
stallation standards require sprin-
klers to be tested and, if necessary,
replaced after a specified term of ser-
vice. Refer to the installation stan-
dards (e.g., NFPA 25) and the Au-
thority Having Jurisdiction for the
specified period of time after which
testing and/or replacement is re-
quired. Never attempt to repair or re-
assemble a dry sprinkler. Sprinklers
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 crit-
ical for proper fire protection. Nothing
should be hung from, attached to, or
otherwise obstruct the discharge pat-
tern. All obstructions must be imme-
diately removed or, if necessary, ad-
ditional sprinklers installed.
D. When replacing existing sprinklers,
the system must be removed from
service. Refer to the appropriate sys-
tem description and/or valve instruc-
tions. Prior to removing the system
from service, notify all Authorities
Having Jurisdiction. Consideration
should be given to employment of a
fire patrol in the effected area.
1. Remove the system from service,
drain all water, and relieve all
pressure on the piping.
2. Using the special dry sprinkler
wrench, remove the old sprinkler
and install the new unit. Care
must be taken to ensure that the
replacement sprinkler is the
proper model and style, with the
appropriate “A” dimension, orifice
size, and temperature rating. Fol-
low instructions in section 6. IN-
STALLATION.
3. Place the system back in service
and secure all valves. Check for
and repair all leaks.
E. Sprinkler systems that have been
subjected to fire must be returned to
service as soon as possible. The en-
tire system must be inspected for
damage, and repaired or replaced as
necessary. Sprinklers that have
been exposed to corrosive products
of combustion or high ambient tem-
peratures, but have not operated,
should be replaced. Refer to the Au-
thority Having Jurisdiction for mini-
mum replacement requirements.
Sprinkler 102 l
September 16, 2005
TECHNICAL DATA
STANDARD RESPONSE
ORDINARY HAZARD
DRY HORIZONTAL SIDEWALL
SPRINKLERS (VK250, VK252, VK254)
OBSOLETE

Form No. F_010105
THIS PAGE
INTENTIONALLY
LEFT BLANK
Replaces page 102 h-l, dated Sept. 16, 2005 (corrected
to remove FM Approval and revised the K-Factor graph).
OBSOLETE