November 2022
6022221B - Direct Drive HVLS Fan UM
27
Installation
INSTALL THE VFD BOX
Verify the voltage and phase before mounting the
box. Ensure the voltage from the building source
wiring matches the voltage listed on the VFD box.
The VFD box must be installed outside and
a safe distance from the blade diameter for
service purposes.
The maximum length of the cable between
the VFD box and the motor is 150 linear feet.
Do not run motor cables in the same conduit
as input voltage.
Do not run motor cables in the same conduit
as other motor cables.
If you mount multiple VFD panels in the same
location, tie the grounds in series.
1. Mount the VFD box outside the fan blade
arc.
Orient the box so that the front panel is
accessible and visible with the connectors
on top of the panel.
2. Route the fan S.O. cable from the fan to the
VFD box and check to make sure the cable
is supported throughout its routing.
3. Ensure the cable is supported throughout its
routing.
4. Route the supply power from the building
source to the VFD box.
5. Wire the VFD box in accordance with the
Electrical Schematics on page 33.
Figure 12
Safety cable
Motor frame
Space cable
clamps 6" apart
Cable clamps
Installing the VFD Enclosure
to view the video
Figure 13
TOC
