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Typical Installations
For units supplied or used with a Variable Frequency
Drive (VFD), reference the VFD documentation for
installation requirements, start-up settings, parameter
adjustments and trouble shooting. VFDs provided
by Greenheck are factory programmed for basic
motor parameters, incoming voltage parameters and
maximum operating speed (Hz).
Follow NEC and local codes for VFD wiring and
installation. If the wire length between the VFD and
the controlled motor exceeds 100 ft (30.5 m), DV/DT
filters or VFD cabling may be required. Calculations
and proper application of DV/DT filters and VFD
cabling is by others; failing to do so may result in
premature motor failure.
The example shown below is installed using standard
mounting brackets. Before beginning installation,
reference the airflow direction as indicated by the
direction decal attached to the fan.
Decals
Airflow
This is the label
for a model
GJX.
Mounting Angles
provided by others
Mounting Bracket on fan
provided by Greenheck
Silencer
3/4 Length
Full
Mounting Pattern
Unit
A
B
Size
inches (mm)
14.80
10.28
0.47
31
(376)
(261)
(12)
14.80
12.28
0.47
36
(376)
(312)
12)
17.80
14.29
0.47
41
(452)
(363)
(12)
®
4
GJX GreenJet
NOTE
Wheel
Rotation
Mounting Bracket on fan
provided by Greenheck
Silencer
Fan
This was drawn by hand. Did not have a CAD drawing to convert. Needed an
IOM quickly for units that had been built and shipped. Modeled after Kyle
Brownell's hand sketch.
3/4 Length
Full
Ø
Ø
B
A
Fan Mounting
The fan should be mounted either rigidly or through the
use of vibration isolators. If vibration isolators are used,
consideration should be given to ensure the safety
of the installation. One method of ensuring safety is
through the use of a drop rod that would 'catch' the fan
if the isolator were to fail during normal operation or due
to the excessive heat of a fire.
Silencer Installation
The fan and silencers are shipped disassembled in
order to prevent freight damage. A total of sixteen bolts
are provided for installing the silencers on the fan (eight
bolts per silencer). Ensure that the silencer is centered
on the fan housing before tightening the bolts.
Electrical Installation
Particular attention should be given when connecting
power to the unit. The power cable should be installed to
meet local requirements for high temperature operation.
The power cable should be capable of meeting, as a
minimum, the time and temperature applications which
the fan is capable of.
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