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Form No. F_012213 Rev 14.1
the Viking Corporation, 210 N industrial Park Drive, Hastings Mi 49058
telephone: 269-945-9501 technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
4. iNStaLLatiON
Viking Flexible Sprinkler Connection Assemblies are manufactured and tested to meet the latest rigid requirements of the approv-
ing agencies. They are designed and tested to be installed in accordance with the Approved and Listed installation instructions
as provided with the product and the recognized installation standards. Deviations from these standards or any alterations to the
support system or sprinkler after leaving the factory including, but not limited to painting, plating, coating or modification may render
the sprinkler inoperative or the support system non-compliant, automatically nullifying the approvals and any guarantee made by
The Viking Corporation.
Flexi�le Sprinkler Connection with Bracket System assem�ly: (See figures 1 - 4)
Viking Flexible Sprinkler Connections are offered pre-assembled from the factory with the center bracket and inside/outside brack-
ets attached to the square bar. SKiP tO StEP tWO, unless the standard factory assembled product is not provided.
Step 1- Slide the square bar into the center bracket assembly. Attach the two inside brackets to the square bar with two M6 x 25mm wing bolt.
Tighten the wing bolts to 30 in-lbs. (1/4 turn past hand tight). Loosely attach the two outside brackets to the inside brackets with two M6 x 25
mm wing bolts.
Step 2- Install the bracket assembly onto the main tee bars of the ceiling so that the main tee is between the inside bracket and
the outside bracket. Install the outlet extension nipple into the center bracket assembly. Locate the bracket assembly to the desired
position of the sprinkler. Tighten the wing bolt of the center bracket to 75 in. lbs. (1/2 turn past hand tight). Tighten the wing bolts
of the side brackets to 30 in-lbs. (3/4 turn past hand tight).
Step 3- Install the 1" inlet nipple into the sprinkler branch line pipe. Connect the flexible hose to the inlet nipple with a torque of
75 in-lbs. (1/2 turn past hand tight). Connect the flexible hose to the outlet extension nipple with a large smooth bend having a
minimum radius of 12" in (305 mm). Tighten the flexible hose to the outlet extension nipple with 75 in-lbs (1/2 turn past hand tight).
Multiple bends are permissible when done in accordance with Table 2.
Step 4- Attach the sprinkler to the outlet extension nipple. Use a wrench on the extension nipple and the proper sprinkler wrench
on the sprinkler when tightening.
Step 5- Installation is complete. See Figure 2 for acceptable bends.
The use of certain types of sprinklers may be limited due to occupancy and hazard. Refer to the Authority Having Jurisdiction prior
to installation.
Keep sprinklers with protective shields or caps contained within the shields or caps during installation and testing, and
any time the sprinkler is shipped or handled.
remove plastic protective sprinkler caps or �ul� shields aFtEr the ceiling finish work is completed where the sprin-
kler is installed and there no longer is a potential for mechanical damage to the sprinkler operating elements. To
remove the bulb shields, simply pull the ends of the shields apart where they are snapped together. To remove caps from
frame style sprinklers, turn the caps slightly and pull them off the sprinklers. SPriNKLEr CaPS Or BULB SHiELDS MUSt BE
rEMOVED FrOM SPriNKLErS BEFOrE PLaCiNG tHE SYStEM iN SErViCE! Retain a protective cap or shield in the
spare sprinkler cabinet.
For concealed style sprinklers, the cover plate assembly can now be installed onto the sprinkler.
a. Remove the cover from the protective box, taking care not to damage the cover plate assembly.
b. From below the ceiling, gently place the base of the cover assembly over the sprinkler protruding through the ceiling opening.
c. Push the cover plate assembly onto the sprinkler until the unfinished brass flange of the cover plate base touches the ceiling.
d. Available cover plate adjustment is ½" (12.7 mm) +/- 1/4" (6.4 mm).
For frame style sprinklers with the Model E-1 or E-2 Escutcheon, or with the Model F-1 Escutcheon, press on or thread on the outer
escutcheon cup until the flanges touch the surface of the ceiling.
a. With the E-1 or E-2 Escutcheon, the maximum recess is ½" (12.7 mm). The face of the escutcheon adapter may extend up
to 11/32" (8.7 mm) beyond the edge of the escutcheon cup, resulting in 27/32" (21.4 mm) total adjustment range.
If it is necessary to remove the entire sprinkler unit, the system must be taken out of service. See section 6. INSPECTIONS, TESTS
AND MAINTENANCE and follow all warnings and instructions.
5. OPEratiON
Refer to the sprinkler technical data page for the sprinkler model used with the Flexible Sprinkler Connection Assembly.
tECHNiCaL Data
MODEL FSC-28B
BraiDED FLEXiBLE
SPriNKLEr CONNECtiON
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