Alternative #1 - Metal Joist/Stud Installation (Fm Only For Ab1 And Ab2) - Victaulic VicFlex I-VICFLEX Field Installation Handbook

ALTERNATIVE #1 – METAL JOIST/STUD
INSTALLATION (FM ONLY FOR AB1 AND AB2)
1. Install the flexible hose into the sprinkler piping and the sprinkler reducing nipple onto
the flexible hose by following the applicable instructions in the "Connection to Sprinkler
Piping" and "Connecting the Sprinkler Reducing Nipple to the Flexible Hose" sections.
1¼-inch/32-mm Long #10 Self-Drilling
3. Measure the distance between the metal joists/studs.
3a. Cut the square bar to the length needed to fit between the two metal joists/studs.
This length shall be measured from the outside of the end bracket assembly to the point
on the square bar that will butt against the other metal joist/stud.
4. Place the end bracket assembly, removed in step 2, onto the end of the square bar so
that the square bar is flush with the outside of the end bracket assembly. Reinstall the
wing screw loosely into the top of the end bracket assembly.
5. Install the modified Style AB1 or AB2 Bracket between the metal joists/studs by using
four, 1 1/4-inch/32-mm long #10 self-drilling sheet metal screws in the locations noted in
the graphic shown above. NOTE: Install the top two sheet metal screws first.
6. Tighten the wing screw on top of the end bracket assembly to a torque of 36 inch-lbs/
4 N•m (approximately 1/2 to 3/4 of a turn past hand-tight).
7. Complete the installation by following the applicable instructions in the "Sprinkler
Reducing Nipple Installation" and "Sprinkler Installation" sections.
STYLE AB1, AB2, AND AB10 BRACKETS
INSTALLATION INSTRUCTIONS REV_A
Sheet Metal Screws (4 Total)
2. Loosen and remove the wing screw
of the Style AB1 or AB2 end bracket
assembly.
Wing
Screw
I-VICFLEX_31