Aerovent IM-632NF Manual

©2023 Twin City Fan Companies, Ltd.
• Fan sizes 14 to 42 are shipped fully assembled, unless otherwise specified.
• A minimum of two people are required for assembly. Before starting, review these instructions.
• The following tools are required:
- Powered screwdriver (preferred) or drill
- 3/8, 7/16, 1/2, 9/16 wrenches and sockets
- 5/16" nut driver bit for powered screwdriver
- Awl, for hole alignment
Fan Size/Qty
14 16 18 21 24 30 36 42 48 54 60
Panel End Assy, Male 1 1 1 1 1 1 1 1 1 1 1
Panel End Assy, Female 1 1 1 1 1 1 1 1 1 1 1
Hood Panel 2 2 2 2 3 5 5 6 7 7 8
Hood Side Rail Assy 2 2 2 2 2 2 2 2 2 2 2
Hood Gusset 0 0 0 0 0 4 4 4 4 4 4
Hood Clip 0 0 0 0 0 0 0 0 0 16 18
Hood Mount Bar 2 2 2 2 2 2 2 2 2 2 2
Bird Screen Assy, Fixed 2 2 2 2 2 2 2 2 2 2 2
Bird Screen Assy, Removable 2 2 2 2 2 2 2 2 2 2 2
HDWRKIT-LH01 Hardware Kit #1 - Hood
Qty Item
12 Cap Screw, Serrated Flange Hex, 3/8-16 x .75
20 Hex Nut, Serrated Flange, 3/8-16
4 Cap Screw, Serrated Flange Hex, 3/8-16 x 1.25
72 Screws, #12
HDWRKIT-LH06 Hardware Kit #6 - Mesh Bird Screen (Size 24 to 60)
Qty Item
10 Cap Screw, Serrated Flange Hex, 5/16-18 x .75
6 Nut Clip, 5/16
4 Hex Nut, Serrated Flange, 5/16-18
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Inspect for missing or damaged parts
General Installation, Operation and Maintenance Instructions For Aerovent Products
IM-632NF
February 2023
Hooded Roof Ventilators
(Non-Filtered)

2 Aerovent Installation and Maintenance Manual: IM-632NF
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Step 1 – Install Hood Mount Bars
Fasteners (Kit #1):
Cap Screw, Serrated Flange, 3/8-16 x 0.75
Hex Nut, Serrated Flange, 3/8-16
A. Assemble Hood Mount Bars on both sides of the fan
housing, using cap screws and nuts.
B. Assemble four Hood Gussets using cap screws and nuts.
The bottom holes on the gussets attach to the curb stop
fasteners, which are already installed on the fan housing.
One at a time, remove the screws and attach the gussets.
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Step 2 – Install Fixed Screens
Fasteners (Kit #6):
Cap Screw, Serrated Flange, 5/16-18 x 0.75
Hex Nut, Serrated Flange, 5/16-18
Nut Clips, 5/16-18
A. Install nut clips onto Fan Housing Side Panel flanges as
shown.
B. Install two Fixed Screen Assemblies using cap screws and
nuts. Do not fully tighten these fasteners. They will be
fully tightened in the next step.
Step 3 – Install Removable Screens
A. Install two Removable Screen Assemblies. After
positioning the assemblies, rotate the locking tabs in
place and tighten.
B. Fully tighten the Fixed Screen Assembly fasteners from
the previous step.
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Detail of locking tabs
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Aerovent Installation and Maintenance Manual: IM-632NF 3
Step 4 – Install Hood Side Rails
Fasteners (Kit #1):
Cap Screw, Serrated Flange, 3/8-16 x 1.25
Hex Nut, Serrated Flange, 3/8-16
A. Install two Hood Side Rail Assemblies to the Hood
Mount Bars using cap screws and nuts. Do not fully
tighten fasteners. They will be tightened in Step 7.
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Step 5 – Install End Panel
Assy (Male)
Fasteners (Kit #1):
Screws, #12
A. Install the End Panel Assembly (male type) using #12
screws.
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Step 6 – Install Hood Panels
Fasteners (Kit #1):
Screws, #12
A. Install the Hood Panels using #12 screws.
B. On sizes 54 and 60, hood clips must be installed
at each interlocking rib while installing the panels.
Position the Hood Panel in place and reach
underneath to slide the clip into place.
For Sizes 54 and 60,
install hood clips at each rib.
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End View of Panel

Step 7 – Attach End Panel Assy
(Female)
Fasteners (Kit #1):
Screws, #12
A. Attach End Panel Assembly (female type), using #12
screws.
B. Fully tighten the Hood Mount Bar/Side Rail fasteners
from Step 4.
Step 8 – Install Screen Clips
(Size 54 and 60)
Fasteners (Kit #1):
Screws, #12
A. For fan sizes 54 and 60, add screen clips to underside of
hood using #12 screws.
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Step 9 – Check All Fasteners
A. Check that all fasteners are fully tightened.
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