Twin City Hooded Tubeaxial Roof Fans (Filtered Supply) - IM-4850FS - Manual (Page 2)

2 Twin City IM-4850FS Twin City IM-4850FS 3
Step 1 – Install Hood Mount Bars,
Gussets and Filter Stops
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, both sides, using cap screws and
nuts.
B. Assemble four Hood Gussets to Hood Mount
Bars and fan housing using cap screws and
nuts.
Hood Gusset
Hood Gusset
Hood
Gusset
Hood Gusset
Hood
Mount Bar
Hood Mount Bar
Filter Stop Plate
Filter Stop Plate
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
A. Assemble two Long Rail Assemblies using
cap screws and nuts.
B. Assemble two Short Rail Assemblies using
cap screws and nuts.
Filter Channel
Filter Channel
Stiffener Angle
Stiffener
Angle
5/16"
Cap Screws
Long
Rail Assy
Long Rail Assy
Short Rail
Assy
Short Rail
Assy
5/16"
Cap Screw
5/16" Nut
End Panel
Assy,
Male Type
Male Flange
(Narrow)
Female Flange
(Wide)
End View of Panel
IMPORTANT - This flange must
be male. Refer to the detail below.
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.
Hood
Side
Rail
Assy
3/8"
Cap Screw
and Nut
Hood
Side
Rail
Assy
Step 5 – Install End Assy (Male)
Fasteners (Kit #1):
Screws, #12
A. Assemble End Panel Assembly (male type)
using two #12 screws.
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 install-
ing the panels. Position the Hood Panel in
place and reach underneath to slide the clip
into place.
Hood Panels
End View of Panel
For Sizes 54 and 60,
install hood clips at each rib.
#12
Screws
Hood Side
Rail Assy
Hood
Panels
Hood Clip