J&D MAnufacturing MEGA STORM II User manual

IS251-17E J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com Page 1/6
Please read over all instructions carefully before you begin.
If you have any questions please call your local dealer, or
contact J&D Manufacturing at 1-800-998-2398.
INSTALLATION
PARTS LEGEND
MEGA STORM II WITH CONE
72” FIBERGLASS EXHAUST FAN
WARRANTY
J&D Manufacturing warrants all products are free from defects in materials and
workmanship under normal use for the period of one year from date of purchase.
Our warranty does not cover normal or regular wear and tear. J&D Manufacturing
can repair or replace at our option, any product or part of the product that is found
to be defective. Our warranty applies to materials only, and does not include return
freight, delivery, loss or damage to personal property, cost of removal or
installation, any incidental or consequential damages or labor. This warranty does
not apply to products which are misused, abused, altered, improperly installed or
subject to negligence. All warranties must be approved through our warranty
department. The original purchaser must present a copy of the invoice for the
defective product. One year is our standard warranty unless specified on our
literature or in the installation instructions or user manuals.
RECOMMENDED TOOLS FOR INSTALLATION AND ASSEMBLY
(NOT PROVIDED)
Measuring
Tape
Safety Glasses
1/2" Socket
Socket Wrench
Drill and
3/16”& 5/16”
Drill Bits
Rivet Gun Phillips Head
Screwdriver
INSTALLATION HARDWARE IS NOT PROVIDED
Guard Housing
Shutter
(14)
Shutter Clips
(3)
Shutter Springs
(for aluminum shutter
models only)
Cone
INCLUDED ASSEMBLY HARDWARE - TO SCALE
(8)
Flat Washer
5/16”
(14)
S. Steel Rivet
3/16” x 1/2”
(14)
Backup Washer
3/16”ID x 1/2"OD
(8)
Phillips Truss Bolt
5/16”-18 x 1”
(16)
Nylock Flange Nut
5/16”-18
(8)
Carriage Bolt
5/16”-18 x 1-1/4”

Fan
Flange
Shutter
Clip
Rivet
Washer
Rivet
Washer
Fan
Flange
Shutter
Clip
1a 1b
IS251-17E J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com Page 2/6
Construct structurally sound 77”
square rough opening.
Correct orientation of fan. Drainage
holes down. NOTE: Drainage holes
MUST be free from obstruction.
77”
77”
ROUGH
OPENING
(Inside Dimensions)
Using the 14 pre-drilled holes in the housing flange attach all (14) shutter
clips with a rivet gun using (14) 3/16” rivets and (14) 3/16” backup
washers. Review the illustrations below for placement and assembly.
Measure and mark the exterior of the venturi 2” from edge of opening as
shown in illustration. These will be your guides for properly installing the
cone in Step 6.
edge of venturi
2”
1
2
4”
4”
From the inside of your structure, insert fan into the finished opening.
Interior
of structure
Exterior
of structure
Airflow
Airflow
Airflow
Airflow
3
On the mounting flange measure and mark 4” from each of the 14
pre-drilled mounting holes used for attaching the shutter clips as shown.
4
View from inlet side of fan
Drainage Holes

IS251-17E J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com Page 3/6
Using the 6 pre-drilled holes in the cone and a 5/16” drill bit, drill matching
holes in venturi and secure with (8) 5/16” phillips truss bolts, (8) 5/16” flat
washers, and (8) 5/16” nylock flange nuts. Insert bolt from the interior of
the cone and secure with washer and nut on exterior.
Using marks made in Step 4 as your guide secure housing to structure
using hardware suitable for your structure (not included) and washers
compatible with your hardware (not included).
DO NOT secure through the sidewalls of the housing
DO NOT distort the housing
Venturi must not be distorted and prop must be able to rotate freely
and not come in contact with the housing
5
7
Slide cone onto venturi so that venturi and cone overlap by 2”. Use marks
made in Step 2 as your guide.
6
Place guard onto cone flange. Using the guard mounting feet as guides
and 5/16” drill bit, drill holes through cone flange. Secure the guard to
the cone using (8) 5/16” carriage bolts and (8) 5/16” nylock flange nuts.
Review the Assembly Side View illustration for proper installation. Do not
tighten until all have been assembled.
Nylock Flange Nut
Cone Flange
Guard Mounting Foot
Carriage Bolt
Assembly
Top View
8
Venturi must not
be distorted and
prop must be
able to rotate
freely and not
come in contact
with the housing

IS251-17E J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com Page 4/6
Connecting power to the unit.
• Install manual disconnect switch inside building adjacent
to fan.
• Route wire to motor with drip loop and secure. Drip loop
will drain accumulated moisture away from the motor.
• Configure internal wires to match supply voltage and
wire according to motor nameplate. Test to verify correct
rotation.
• Shut off manual disconnect for remainder of
install. Only permit power to unit when shutter
and guard is fully installed to prevent injury.
9
DISCONNECT POWER
BEFORE INSTALLING OR SERVICING.
ALL ELECTRICAL WORK SHOULD BE COMPLETED BY
QUALIFIED PERSONNEL AND MEET NATIONAL (NEC),
REGIONAL AND LOCAL ELECTRIC CODES.
! !
Swivel top and side shutter clips open. Set bottom shutter flange between
housing flange and bottom shutter clips. Secure shutter by swiveling top
and side shutter clips over shutter flange.
10
Measure 4” from each tie bar and mark shutter frame lip as shown.
Using a 3/16” drill bit, drill a hole in the shutter lip at each location.
11
4”
Fan Housing
Shutter
Frame
Shutter Frame Lip
Side Cutaway View
If the fan has a poly shutter your installation is done,
proceed to end to review the Maintenance Instructions.

IS251-17E J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com Page 5/6
Identify shutter bracket on 3rd shutter louvre from the bottom. Attach
shutter spring hook through hole in the bottom of the shutter louvre
bracket as shown below. Repeat until all 3 shutter springs are installed.
13
At each location drilled in Step 11 attach loop end of spring to shutter
frame lip as shown below.
12
Fan Housing
Shutter
Frame
Shutter Frame Lip
Side Cutaway View
Shutter Spring
3
2
1

IS251-17E J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com Page 6/6
MAINTENANCE INSTRUCTIONS
Failure to follow maintenance instructions will void warranty.
drainage
holes
• To prevent serious injury or death, disconnect power
before cleaning or maintaining fan or fan motor.
• Service and repair of fan and motor should only be
completed by a qualified technician.
• Lubrication
—
›If fan motor has grease fittings adhere to the
lubrication schedule and quantity as stated on
yellow motor label.
—
›If fan motor does not have grease fittings it is
sealed and does not require additional lubrication.
• Every 4 months or as required, remove dust and debris from:
° shutter louvers
° fan blades
° motor
° fan housing
° guards
• If using a pressure or power washer to clean unit avoid:
° motor seals
° bearing seals
° belt tensioner
• Housing drainage holes, as shown in illustration, need to
be kept free from debris to allow water from cleaning or
weather to drain.

IS252-16F J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com Page 1/1
WARNING!!
Venturi
Bottom
Cleat
DO NOT
remove
2x4’s from
either side
To unpack
slide fan
this way
This fan is top heavy, failure
to unpack properly can result
in bodily injury and/or damage
to the fan.
To safely unpack fan follow the below steps.
1) Remove the bottom cleat that is securing the
bottom of the fan (as indicated in the photo).
2) Using a minimum of 3 people (one on either
side and one supporting the venturi) to slide
fan out of packing frame
DO NOT remove any of the 2x4’s
from either side of the fan.