Installing Duct Collars; Exhaust Duct Collars - Accurex XBEW Installation, Operation And Maintenance Manual

Back and Front Clearance Reduction Options
One inch (2.54 cm) layer of insulation in 3 in. (7.62 cm)
back stand-off meets zero inch requirements for
clearance to combustible surfaces as outlined under
the clearance reduction methods.
Three inches (7.62 cm) uninsulated back stand-off
meets NFPA 96 requirements for clearance to limited
combustible surfaces.
One inch (2.54 cm) layer of insulation factory-installed
on the front of the hood (optional) meets zero inch
requirements for clearance to combustible surfaces.
End Clearance Reduction Options
One inch (2.54 cm) layer of insulation factory-installed
on the end of the hood (optional) meets zero inch
requirements for clearance to combustible surfaces
under the clearance reduction methods.
Three inches (7.62 cm) uninsulated airspace installed on
end of hood (optional). Meets NFPA 96 requirements for
clearance to limited combustible surfaces.
8 Kitchen Hoods • Type I and Type II

Installing Duct Collars

Exhaust Duct Collars

1. The exhaust duct connection needs to be located
within 48 in. (121.92 cm) from the center of the hood
length to the center of the duct connection and
within shaded area as shown.
Hanger Bracket
Top View of the Hood
Exhaust Plenum
Hanger Bracket
Exhaust Plenum
Supply Plenum
Supply Plenum
8 in.
Hood Length
8 in.
Hood Length
Back View of the Hood
8 in.
Hood Top
1 in.
8 in.
12 in.
Hood Top
1 in.
Exhaust Plenum
12 in.
2. The exhaust duct connection is to be a continuous
liquid-tight weld. Utilizing the 1" (rectangular collars) or
1/2" (round collars) flange, weld with a non-ferrous filler
wire, such as silicon bronze or stainless steel filler wire.
Protect all stainless steel areas from weld splatter.
Duct cut out area
Duct cut out area
Front of hood
8 in.
Front of hood
8 in.
8 in.
Exhaust Plenum
Duct cut out area
Duct cut out area
3 in.
16 in.
3 in.
16 in.
Hood
Width
Hood
16 in.
Width
16 in.
3 in.
3 in.
8 in.