Kitchen Hoods • Type I and Type II
8
Hanger Bracket
Exhaust Plenum
Duct cut out area
Duct cut out area
Hood Top
Supply Plenum
Hood Length
Hood
Width
Front of hood
Exhaust Plenum
8 in.
8 in.
8 in.
3 in.
3 in.
16 in.
16 in.
8 in.
1 in.
12 in.
Back View of the Hood
Hanger Bracket
Exhaust Plenum
Duct cut out area
Duct cut out area
Hood Top
Supply Plenum
Hood Length
Hood
Width
Front of hood
Exhaust Plenum
8 in.
8 in.
8 in.
3 in.
3 in.
16 in.
16 in.
8 in.
1 in.
12 in.
Top View of the Hood
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.
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.
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.
CLEARANCE REDUCTION METHODS HAVE BEEN EVALUATED AND TESTED AND ARE LISTED BY UL
(UNDERWRITERS LABORATORIES). THE METHOD OF TEST WAS DERIVED FROM THE UL710 TEST
STANDARD.
THE HOOD MAY BE INSTALLED WITH 0" CLEARANCE TO COMBUSTIBLE MATERIALS PER UL IF CONSTRUCTED
IN THE FOLLOWING WAY:
- 1 INCH THICK LAYER OF INSULATION OF TYPE OWENS CORNING TYPE 475, JOHNS MANVILLE TYPE 475,
IIG MINERAL WOOL TYPE 1200 FLEXIBLE BATT, TYPE KNAUF TYPE EI 475
- INSULATION MUST BE HELD SECURELY IN PLACE. PINS THAT ARE WELDED OR SECURED WITH AN
ADHESIVE MAY BE USED.
- A BACK SPLASH PANEL MUST BE ATTACHED TO THE WALL (INSULATED OR UN-INSULATED).
TO COMPLY WITH THE UL LISTING, THE COOKING APPLIANCE MUST BE AS FOLLOWS:
- MAX SURFACE TEMP IS 700 DEGREES FAHRENHEIT.
- LOCATED AT LEAST 3" FROM REAR WALL
- LOCATED AT LEAST 40" BELOW BOTTOM FRONT EDGE OF HOOD.
THE HOOD MAY BE INSTALLED WITH 3" CLEARANCE TO LIMITED COMBUSTIBLE MATERIALS PER NFPA96 IF
CONSTRUCTED IN ONE OF THE FOLLOWING METHODS:
- 3" REAR UN-INSULATED STANDOFF
- 3" TOP ENCLOSURE PANEL SYSTEM
- 3" END UN-INSULATED STANDOFF
3" UN-INSULATED BACK STANDOFF.
MEETS NFPA96 REQUIREMENTS FOR
CLEARANCE TO LIMITED COMBUSTIBLE
SURFACES
TOP CLEARANCE REDUCTION OPTIONS
CLEARANCE REDUCTION METHODS
END CLEARANCE REDUCTION OPTIONS
CLEARANCE REDUCTION METHODS:
