17
Open Web Steel Joist Mount(s)
Used to mount directly under a single OWSJ. There are different mounting configurations for installing the
fan, depending on the installation location. You may directly mount the fan to the bottom of the OWSJ with
kit HVLS-MOUNT-OWSJ-DM. You may install between the joists on the top or bottom of the OWSJ. If
installing between joists, refer to “Installing Fan Between OWSJ” on page 18. All hardware must be
minimum grade 8.
Direct Beam Mount
Used to mount the fan directly under an OWSJ. The beam must be 3” to 10” wide and 1/4” to 1” thick. Use
I-beam spacers when the beam thickness is greater than 5/8” up to 1” thick.
The direct mount uses two I-Beam clamps with the pivot extension assembly.
• Insert 1/2”-13 x 6” bolts with 1/2” washers through the I-Beam clamp.
• Place pivot extension assembly through bolts and secure with 1/2”-13 nylock nut and 1/2” washers.
• Torque hardware to 75 Ft-lbs/101 Nm.
To install extension assembly, refer to “Installing Pivot Mount Assembly” on page 25.
Figure 13 - OWSJ Direct Beam Mount Details
1/2”-13 x 2.5”
Bolt
1/2” Washer
I-Beam
Clamp
1/2” Washer
1/2”-13 Nylock Nut
Hardware Torque
1/2” Hardware
75 Ft-lbs/101 Nm
NOTE: All hardware must
be minimum Grade 8.
Safety Cable
Safety Cable
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