VENCO VCFI Installation, Operation And Maintenance Manual Download Page 18

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Steel Truss Mounting Kit

IMPORTANT:

Structural Engineer of Record (SEOR)

must perform thorough evaluation of mounting structure
and determine final mounting requirements before fan
is installed. Manufacturer is not liable for any problems
that arise as the result of insufficient structure, including
(but not limited to) vibration, noise, or safety hazards.
Product warranty will be voided at manufacturer’s
discretion if structure is deemed insufficient.
Installations must comply with the following
requirements at a minimum, but SEOR may require
more stringent specifications at their discretion:



Do not install HVLS fans on a single steel truss.

Structural steel angles must be used to span a
minimum of 2 trusses.



Steel trusses must have a minimum chord width of

5 inches.



Structural steel angle span lengths must not

exceed 8 feet. For span lengths up to 8 feet, a
minimum of 2 structural steel angles are required.



Size of structural steel angles must be specified by

a structural engineer. Angles must be a minimum
of 4 x 4 x 1/4 inch thick. Larger angles may be
required for span lengths up to 8 feet. Angles shall
be sufficiently stiff to avoid harmonic resonance
excitation during fan operation (120 RPM;
+/- 20%).

Required Loose Components (Included):
  •  Square Washer Plate (4)
Required Components from Bag # 915429:
  •  1/2 in. – 13 x 1-1/2 in. Grade 8 Hex Bolt (4)
  •  1/2 in. – 13 Grade 8 Nylon Locknut (8)
  •  1/2 in. Washer (16)
Hardware/Tools Needed (Not Included):
  •  Structural Steel Angles (2)
  •  1/2 in. – 13 Grade 8 Hex Bolt (4),

length determined

by truss and steel angle material thickness

  •  Torque Wrench
  •  3/4 in. Socket and Wrench
  •  3/4 in. Wrench
  •  Drill and 9/16 in. Drill Bit

1. Size structural steel angles (by others) to fit within

steel trusses/bar joists. Size of steel angle to be
determined by structural engineer.

2. Mount structural steel angles to steel trusses/bar

joists using (4) grade 8, 1/2 in. – 13 bolts (by others
to accommodate varying material thickness), and
supplied (8) 1/2 in. washers, (4) square washer
plates, and (4) 1/2 in. – 13 nylon locknuts. Note
that the hardware should be installed through the
gap in the bottom chord of the steel trusses/bar
joists (reference drawing on to the right). Torque
hardware to 80 ft∙lbf (108.5 N∙m).

STEEL TRUSS / BAR JOIST

STRUCTURAL STEEL ANGLES
(BY OTHERS)

1/2 in. - 13 GRADE 8 HEX BOLT
(BY OTHERS)

1/2 in. - 13 GRADE 8 NYLON LOCKNUT

SQUARE WASHER PLATE

1/2 in. WASHER

STRUCTURAL STEEL ANGLES
(BY OTHERS)

STEEL TRUSS / BAR JOIST

1/2 in. - 13 GRADE 8 HEX BOLT
(BY OTHERS)

STEEL TRUSS / BAR JOIST

SQUARE WASHER PLATE

1/2 in. WASHER

1/2 in. - 13 GRADE 8 NYLON LOCKNUT

TORQUE TO 80 FT∙LBF

(108.5 N∙m)

STEEL TRUSS / BAR JOIST

STRUCTURAL STEEL ANGLES
(BY OTHERS)

1/2 in. - 13 GRADE 8 HEX BOLT
(BY OTHERS)

1/2 in. - 13 GRADE 8 NYLON LOCKNUT

SQUARE WASHER PLATE

1/2 in. WASHER

STRUCTURAL STEEL ANGLES
(BY OTHERS)

STEEL TRUSS / BAR JOIST

1/2 in. - 13 GRADE 8 HEX BOLT
(BY OTHERS)

STEEL TRUSS / BAR JOIST

SQUARE WASHER PLATE

1/2 in. WASHER

1/2 in. - 13 GRADE 8 NYLON LOCKNUT

3. Locate desired fan hanging location. Using the

universal mounting plate as a template, mark and
drill (4) 9/16 in. holes in structural steel angles.

4. Bolt universal mounting plate into place using

supplied (4) 1/2 in. – 13 x 1-1/2 in. grade 8 hex
bolts, (8) 1/2 in. washers and (4) 1/2 in. – 13 grade
8 nylon locknuts. Torque to 80 ft∙lbf
(108.5 N∙m).

STRUCTURAL STEEL ANGLES
(BY OTHERS)

1/2 in. - 13 X 1-1/2 in. GRADE 8 HEX BOLT

UNIVERSAL MOUNTING PLATE

DOWNTUBE & MOUNT ASSEMBLY

1/2 in. WASHER

1/2 in. - 13 GRADE 8 NYLON LOCKNUT

TORQUE TO 80 FT∙LBF

(108.5 N∙m)

5. Turn to page 22 to continue with Motor/Hub to

Downtube Installation.

Refer

ence