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 and Filter Stop
Plates on both sides of the fan housing,
using cap screws and nuts.
B. Assemble four Hood Gussets using cap
screws and nuts. The lower fasteners 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.
Channel
Stiener
Angle
Filter
Long
Assembly
Rail
Stiener
Angle
Short
Rail
Assembly
Filter
Channel
Long
Rail
Assembly
Step 2 – Install Filter Channels and
Stiffeners
Fasteners (Kit #7):
Cap Screw, Serrated Flange, 5/16-18 x 0.75
Hex Nut, Serrated Flange, 5/16-18
A. Assemble two Filter Channels to Hood Mount
Bars using cap screws and nuts.
B. Assemble two Stiffener Angles to the Filter
Channels using cap screws and nuts.
Step 3 – Install Filter Rail
Assemblies
Fasteners (Kit #7):
Cap Screw, Serrated Flange, 5/16-18 x 0.75
Hex Nut, Serrated Flange, 5/16-18
Nut Clip, 5/16-18
Short
Rail
Assembly
A. Install nut clips onto the fan Housing Side
Panel flanges as shown.
B. Assemble two Long Rail Assemblies using
cap screws and nuts.
C. Assemble two Short Rail Assemblies using
cap screws and nuts.
Nut Clips
2 Twin City IM-4860FSTwin City IM-4860FS 3
Hood
Side Rail
Assembly
3/8-16 x 1.25
Cap Screws
and Hex Nuts
End Panel Assembly
Male Type
Hood
Side Rail
Assembly
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.
Step 5 – Install End Assy (Male)
Fasteners (Kit #1):
Screws, #12
A. Assemble End Panel Assembly (male type)
using two #12 screws.
Important - This
flange must
be male
Hood Panels
End View of Panel
End View of Panel
Male Flange
(Narrow)
Female Flange
(Wide)
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.
#12
Hood
Panels
Screws
Hood Clip
Hood Side
Rail Assy
End Panel Assembly
TM
®
Female Type
Step 7 – Install End Assembly
(Female)
Fasteners (Kit #1):
Screws, #12
A. Assemble End Panel Assembly (female type)
using four #12 screws. On sizes 54 and 60,
install hood clips at flange joints.
B. Fully tighten the Hood Mount Bar/Side Rail
fasteners from Step 4.
This flange must
be female
Step 8 – Install Filters
A. Remove both Filter Retainers from End
Panels. Retain hardware.
B. Install Filters as shown.
C. Reinstall both Filter Retainers.
Filter
Retainers
Filter Configurations
Fan Size 21
A
A
BB
AA
Fan SizeP/NSizeQuantityP/NSizeQuantity
21
FILTER2A-LH2123.81 x 9.754FILTER2B-LH2129.19 x 8.882
24
FILTER2A-LH2419.88 x 13.506FILTER2B-LH2416.00 x 13.384
30
FILTER2A-LH3020.88 x 15.508FILTER2B-LH3020.00 x 21.064
36
FILTER2A-LH3620.81 x 20.508FILTER2B-LH3623.00 x 18.254
42
FILTER2A-LH4223.81 x 17.008FILTER2B-LH4226.00 x 21.384
48
FILTER2A-LH4821.44 x 23.5010FILTER2B-LH48 29.00 x 24.384
54
FILTER2A-LH5423.88 x 26.5010FILTER2B-LH54 32.13 x 13.698
60
FILTER2A-LH6026.25 x 29.5010FILTER2B-LH60 35.00 x 15.008
Filter AFilter B
Fan Size 24 to 48
(Check table for quantities)
AAAA
A
B
B
A
AAAA
B
B
Fan Size 54 to 60
AAAA
A
B
B
B
B
AAAAA
BB
BB
.5MW09/09
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