Installation Tip - Viking VK426 Technical Data Manual

Institutional sprinklers k5.6

Table of Contents

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4. INSTALLATION

Refer to appropriate NFPA, FM Global, and/or any other applicable installation standards.

NOTICES

• Sprinklers must be handled with care. They must be stored in a cool, dry place in their original shipping container. Never

install sprinklers that have been dropped, damaged in any way, or exposed to temperatures in excess of maximum

ambient temperature allowed. Such sprinklers should be destroyed immediately.

• Viking Institutional Sprinklers are not intended for use in corrosive environments. Use only sprinklers listed for

corrosive environments when subject to corrosive atmospheres.

• Use care when locating sprinklers near fixtures that can generate heat. Do not install sprinklers where they will be

exposed to temperatures that exceed the maximum recommended ambient temperature for the temperature rating used.

• Adequate heat must be provided when the Institutional Sprinklers are installed on wet-pipe systems.

• The sprinklers must be installed after the piping is in place to prevent mechanical damage. Before installing, be sure

to have the appropriate sprinkler model and style, with the correct orifice size, temperature rating, and response

characteristics.

WARNING

Viking sprinklers are manufactured and tested to meet the rigid requirements of the approving agency. 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 limited to: painting, plating, coating, or modifica-

tion, may render the sprinkler inoperative and will automatically nullify the approval and any guarantee made by The

Viking Corporation. Flush sprinklers are decorative sprinklers and may be considered special purpose. As such, some

Authorities may limit the use depending on the occupancy classification. Refer to the Authority Having Jurisdiction prior

to installation.

General Information:

The tamper-resistant design of the Viking Institutional Sprinklers is dependant upon proper installation as outlined in this document

as well as proper piping design and installation. Proper installation ensures that the sprinkler assembly will be held in place by the

force of the escutcheon pressing outward on the sprinkler body.

Pay close attention to the instructions below when installing these sprinklers.

Proper installation requires the following:

•

The fitting in which the sprinkler is to be installed must be properly located according to the dimensions indicated below.

•

The sprinkler fitting and drop nipple should be secured in place by installing the retaining flange as shown in the procedure below.

•

The centerline of the fitting in which the sprinkler is to be installed must be perpendicular to the surface of the finished surface.

•

Remove the sprinkler cap before placing the system into service.

•

After installation, the entire system must be tested in accordance with recognized installation standards. The test is applied after

sprinkler installation to ensure that no damage has occurred to the sprinkler during shipping and installation, and to make sure

the unit has been properly tightened. If a thread leak occurs, 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 or tape is washed

out of the joint

Tools and recommended supplies:

•

PTFE Tape

•

Institutional Sprinkler Wrench Part Number 22847M/B (requires a 1/2" socket wrench which is not available from Viking)

•

1/2" Ratchet wrench and (optional) extenstion

•

1/8" hex wrench (used for retaining flange hex screw; not available from Viking)

•

Level

•

Pliers