Humongous Fan 51512 User manual

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
1
Humongous Fan
Installation Guide
Do not discard these instructions, save for further use
51512, Oct. 2014

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
2
Table of Contents
1. Safety Precautions 3
2. Parts List 4
3. Mounting Scenarios 5
4. Electrical Installation 8
5. Blade Installation 10
6. Operating Instructions 11
7. Periodic Maintenance 12
8. Troubleshooting 12
9. Warranty 13

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
3
SAFETY PRECAUTIONS
READ, FOLLOW AND SAVE THESE INSTRUCTIONS!
1. Only use this fan in a manner intended by the manufacturer
namely as a vertical, ceiling mounted, air moving device. Any
attempt to use this fan for any other purpose without expressed,
written permission from The Humongous Fan Company will
invalidate the warranty.
2. Before servicing or cleaning the fan, all sources of electrical
power must be disconnected. The user should take means to
ensure that the device is not accidentally energized while being
serviced, such as attaching a lockout tag (not included) to the
power supply.
3. If a safety device is removed prior to servicing the fan, it must
be properly reinstalled before re-energizing the fan.
4. Do not replace any parts to this fan with anything other than
authentic Humongous Fan parts. This includes both
mechanical and electrical components.
5. All electrical wiring must conform to the National Electric Code
and all local codes. Code compliance is ultimately the
responsibility of the installer.
6. The fan must be installed in a manner such that there is no
chance for the fan blades to strike a person or object while in
operation.
7. The fan and any supplemental devices must be installed by
qualified personnel. The Humongous Fan Company will not be
responsible for personal injuries or damage to property or
equipment caused by improper installation.

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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8. The supplemental mounting kit must be installed in a manner
as laid out in this manual. All safety devices and bracing cables
must be used.
9. Integrity of the structure to which the fan is mounted is the sole
responsibility of the installer. Consult a structural engineer if
there is any question relating to the integrity of the structure.
PARTS LIST
BEFORE ATTEMPTING TO INSTALL YOUR HUMONGOUS FAN,
PLEASE VERIFY THAT YOU HAVE THE FOLLOWING:
1. Motor/Hub Assembly
2. Blade Mounting Hardware Kit, containing:
a. 16 ea., 1/4-20 X 1” UNC Grade 5 Bolts
b. 16 ea., 1/4”Split Lock Washers.
3. Safety Cable Kit, containing:
a. 1 ea., 10 Ft. (3.1m) of 1/8” Galvanized Steel Cable
b. 4 ea., 1/8” Cable Clamps
4. 1 ea., Fan Controller
5. 8 ea., Fan Blades
If you are lacking any of the above items, please call us at 216-663-8830.

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
5
MOUNTING SCENARIOS
The Humongous Fan is designed to be mounted to either a series of
braces spanning two joists or, directly to an I-beam. The mounting
must be sufficiently secure to absorb up to 250 ft-lbs (340 N-M) of
torque, plus an appropriate safety factor. All bolts must be torqued
to the following values:
Table 1
Joist Mounting Scenario
In general, mounting a Humongous Fan between joists is easier than
clamping to a beam, especially if the joists are close together.
Additionally, this type of mounting offers additional flexibility for fitting
the fan between lights and avoiding the flickering caused by fan
blades passing below a lighting fixture.
Since the motor/hub assembly is the heaviest part of the fan
(weighing as much as 75 lbs/33KG), it will take two people to mount.
Product
Torque [Ft.Lb]
Torque [N.m]
1/8” Wire Rope Clamps
4.5
6
1/4-20 UNC Grade 5 Bolts
8.5
12
3/8-16 UNC Grade 8 Bolts
44
60
1/2-13 UNC Grade 8 Bolts
106
143
The above values are based upon using clean, zinc
plated, and non-lubricated fasteners.

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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Below is a typical installation mounting across joists.
Figure 1
As the span between joists is increased, heavier material must be
used. The chart below indicates the minimum material cross sections
for various spans. Please note the acceptable materials listed require
the use of two sections spaced on 14” centers to create the mounting
braces. A single angle, or section, should never be used as a beam.

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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Table 2
Joist Spans and Suggested Support Materials
Span
Acceptable Materials
6' or less
2 1/2" x2 1/2"x1/4" Angle Iron
PowerStrut PS 210 or Equivalent
8' or less
3"x3"x1/4" Angle Iron
10' or less
3 1/2x3 1/2x1/4" Angle Iron
PowerStrut PS 200-2T3 or Equivalent
12' or less
3"x3"x1/4" Square Tube, 4”x4”x1/4” Angle Iron
Above 12'
Consult Structural Engineer
Support materials, including hardware to mount to support materials,
are not normally provided with the fan. Use only Grade 8 fasteners
for mounting the fan and support materials. Use of PowerStrut (or
equivalent) products is generally encouraged as it can speed
installation time and limit the weight of steel to be installed overhead.
The safety cable must be routed between the legs of the gearmotor
base and over the support material as shown. The safety cables
must be secured with the four cable clamps provided.Make sure the
cable clamps are installed per the instructions on their packaging.
Once the fan hub is installed, the user must install the breather valve
on the gearbox as shown in Figure 2. Once the breather valve is
installed, you may not move the fan without replacing the plug.

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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Figure 2
Once the fan motor/hub assembly is installed, electrical installation
can proceed. Do not attempt to install fan blades until the electrical
installation is complete and the system is tested.
ELECTRICAL INSTALLATION
For electrical installation, please refer to the manual provided with the
control cabinet.
For the motor, please refer to the following connection diagrams. For
Low Voltage Connection see Motor Junction Box Figure below.
Remove this plug. Replace with
the breather element.

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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For the High Voltage Connection, see Motor Junction Box Figure
below:

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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BLADE INSTALLATION
Once the electrical installation is completed and tested, the blades
can be installed. The blades have a solid spar which is tapped to
accept two ¼-20 bolts. The spars have a sliding fit into the spar tubes
and may require some light lubrication to assemble. Do not hammer
the blade into the spar tube as you could damage the blade or the
gearmotor bearings. Gentle twisting should be sufficient to position
the blades properly.
Figure 8 - Blade Installation
The blades must be installed such that the aluminum blade
extensions are below the bottom of the fan hub as shown. Once the
blades are positioned properly, they are to be secured with the ¼-20
bolts and lock washers provided. The ¼-20 bolts must be torqued to

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
11
the values in Table 1. The blades have tapped holes to accept the
bolts.
Once the blades are installed, the fan should be checked for
interference with nearby objects by rotating it slowly by hand. The
fan should then be run at the lowest speed possible (generally around
10 Hertz) for a few minutes. The fan should be rotating in a counter-
clockwise direction when viewed from below. If the fan is rotating in
the wrong direction, refer to the control manual for instructions on
how to reverse. First, lock out the electrical connection. Reverse two
motor leads to change the direction of the fan. The fan speed should
then be increased to 60 HZ at 5 Hz intervals, running a minute or two
at each speed. At each interval, the fan should be checked for
interference and excessive vibration or rocking. If the fan rocks
significantly at any speed, additional bracing may be required. Call
the factory for assistance.
FAN OPERATION
While in operation, there are a few issues to consider:
1. Avoid blocking air flow to areas where people will benefit from
it. This may involve moving obstructions or changing the
orientation of obstructions to take maximum advantage of the
airflow provided.
2. Try to avoid installing the fan below lights, if possible. The
blades passing below the lights may cause a flickering which
some people find annoying.
3. In winter, maximum benefits are usually obtained by running
the fan at about half speed. In summer it is usually
advantageous to run the fan at the highest speed which will not
inconvenience occupants by blowing around papers, etc…

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
12
PERIODIC MAINTENANCE
WARNING: Before attempting any maintenance, deenergize the fan
and lock out the power to ensure that no one energizes the fan while
maintenance is being performed.
Annual Maintenance:
1. Inspect blades for damage. Any noticeably bent blades must
be replaced before reenergizing the fan. It is normal for the
blades to droop slightly while installed (similar to an airplane
wing). However, if one blade droops significantly more than the
others, corrective action is required. Inspect for other damage,
including glue failure of wing extensions. If you have any
questions, contact the factory for assistance.
2. Check the torque of all mounting fasteners. Do not loosen and
re-torque the fasteners. Instead, check the torque in the
tightening direction only with a calibrated torque wrench.
3. Check the gear motor for oil leaks. If there are no noticeable
leaks, no further action is required as the motor is lubricated for
life.
4. Check the controller and motor electrical power leads for
tightness. This activity should be completed by a qualified
electrician.
TROUBLESHOOTING
1. Fan wobbles noticeably while in use. This may be caused
by a variety of problems, such as installing the fan in an open-
sided structure, such as a barn, or installing the fan indoors
near another air supply. In this case, it may be necessary to
restrain the fan externally. Please call the factory for
assistance
2. Fan rotates in the wrong direction. The fan should rotate in
a counterclockwise direction when viewed from below. If this is

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
13
not the case, it will be necessary to switch two motor power
leads in the controller. Refer to the electrical installation
manual for instructions.
3. Fan won’t start. Ensure that the disconnect (if provided) is in
the ON position or that power is supplied to the variable
frequency drive if a controller is not provided. If that does not
solve the problem, have a qualified electrician troubleshoot the
circuit.
4. Excessive audible noise. Some noise is normal as with any
fan. If you think the noise is excessive, please contact your
Humongous fan representative or the factory for assistance.
5. If fan hums or runs very slowly at more than 20 Hz, check
motor voltage connection.
6. Other problems such as excessive electrical noise are
addressed in the Electrical Installation Manual provided
with the drive/controller.
WARRANTY
The following warranty shall apply to the various components of the
Humongous Fan:
Blades, Fan Hubs, Fan Base,
Beam Mounting Kit …………………………….5 Years (Parts Only)
Gear Motor………………………………………3 Years (Parts Only)
Controller and VFD……………………………..3 years (Parts Only)
Labor……………………………………………..1 Year
The warranty period shall commence 14 days after date of shipment
unless the customer can prove that the fan was installed at a later
date. In those cases, the customer must inform the Humongous Fan
Company in writing of the delay in warranty commencement prior to
fan installation.

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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For the first year of the warranty period, the Humongous Fan
Company will reimburse the customer reasonable expenses for an
outside contractor to complete any necessary repairs for the fan to
operate as designed.
The Humongous Fan Company warranty is limited to repair and
replacement of failed components during the warranty period. The
Humongous Fan Company will not pay liquidated damages for loss of
production or productivity potentially associated with a Humongous
Fan under warranty.
The Humongous Fan Company does not warrant that the fan will
supply a certain amount of air since airflow is highly dependent on
building and mounting geometry and the presence of obstacles at
floor level.
Exclusions:
The following actions and conditions will cause the warranty to
become void:
1. Failure to install the fan properly, including, but not limited to:
a. Failure to follow the appropriate national and local
building and electrical codes.
b. Failure to follow the procedures in this installation manual.
c. Substitution of non-approved mounting hardware. Any
deviation in mounting must be approved in writing the
Humongous Fan Company.
2. Any modification of the fan whatsoever, including mechanical
and electrical components. Any changing of software settings
associated with the power electronics provided by the
Humongous Fan company.
3. Incorrect voltage supply.
4. Any misuse or abuse, including the introduction of foreign
objects

23103 Miles Road [phone]
Cleveland, OH 44128 www.humongousfan.com
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5. Acts of God or other accidents.
6. Running the fan at greater than 60 Hz.
7. Failure to perform maintenance as directed in this manual and
any other documentation provided by the Humongous Fan
Company
8. Any consequential damages sustained as a result of a failure to
follow these warranty exclusions.
The Humongous Fan Company reserves the sole right to determine
whether or not a component has failed as a result of a warrantable
design, manufacturing, or material defect or as a result of a warranty
exclusion. The Humongous Fan Company will determine the
appropriateness of all remedies and repairs.
In the case of some purchased components, particularly electrical
components, the manufacturer of the component may determine the
cause of failure. In those cases, the Humongous Fan Company will
defer to the expertise of the component supplier. If the component
manufacturer determines that there was no manufacturing defect or
improper system design by Humongous Fan, the Humongous Fan
Company will take the same position.
This is the only warranty associated with Humongous Fan Company
products. This warranty supersedes any other warranty or statement
by any person
Warranty Service
For prompt and courteous warranty service please call the
Humongous Fan Company at 216-663-8830. We will fax or email
over the necessary forms.