Victaulic VicFlex AB12, Field Installation Handbook

Page: 121 / 204

I-VICFLEX_121
STYLE VS1 DRY SPRINKLER INSTALLATION FOR
FIRE PROTECTION SERVICE REV_A
FOR WET SYSTEMS ONLY:
•
DO NOT
install Style VS1 Dry Sprinklers into any threaded elbow, thread-by-thread
coupling, or fitting that interferes with thread penetration. The inlet of the Style VS1
Dry Sprinkler
SHALL NOT
bottom out in the fitting. Use a sample fitting to confirm
proper engagement.
• To ensure unobstructed flow during operation, the Style VS1 Dry Sprinkler shall be
installed into a fitting that will prevent water and debris from accumulating at the
dry sprinkler’s inlet.
• Verify that the exposed minimum barrel length in the heated space is measured
and maintained in accordance with the table below.
In a heated space, if a portion of the Style VS1 Dry Sprinkler extends
into an unheated space, it shall be installed with a continuous downward
slope along the entire length from the inside wall to the outlet end of the
dry sprinkler. No localized low points shall be present along the length of
the sprinkler in the unheated space. Refer to the drawing above.
STYLE VB1 BRACKET INSTALLATION FOR WOOD
OR METAL JOISTS/STUDS
WARNING
• DO NOT attempt to adjust or remove a Style VS1 Dry Sprinkler while the sprin-
kler system is pressurized.
Failure to follow this instruction could result in death or serious personal injury and
property damage.
1. Cut a hole in the finished ceiling or wall. Refer to the table below for hole sizes.
Minimum and Maximum Hole Sizes
Sprinkler Style
Hole Sizes – inches/millimeters
Minimum Maximum
VS1 Recessed
2 2 3/8
51 60
VS1 Concealed
2 5/8 2 3/4
67 70
VS1 Sleeve/Skirt
1 3/4 2 1/2
44 64
Engage Wrench
Only On Swivel
Hex Nut
2. Apply a non-hardening pipe-joint
compound or two to three wraps of
PTFE thread sealant tape to the male
threads of the Style VS1 Dry Sprinkler’s
inlet, in accordance with the pipe joint
compound or tape manufacturer’s
instructions.
2a.
Using a 2-inch wrench, tighten
the swivel hex nut at the Style VS1 Dry
Sprinkler’s inlet to a torque of
30 ft-lbs/41 N•m (approximately 1/2 to 3/4
of a turn past hand-tight).