2.8.2
Ducts at Dishwashing Machines
Ducts at dishwashing machines shall consist of two vertical ducts, one at
each end of the dishwasher. Exposed, seamless, ducts shall be constructed
of not less than 1.3 mm (18 gauge) 18 gauge stainless steel and shall be
sized to accommodate the machine exhaust vent. The intake of each duct
shall be at the top edge of the dishwasher and the ducts shall extend to
150 mm 6 inches above the finished ceiling for final connection. The duct
shall be trimmed at the ceiling with a 1.6 mm (16 gauge) 16 gauge stainless
steel angle flange with corners welded. The exhaust outlet shall be
connected to the exhaust system.
2.8.3
Condensate Exhaust Hoods
Hoods, exposed ducts, and enclosures over dishwashing machines and the
rinse compartment of pot washing sinks shall be constructed of 1.6 mm (16
gauge) 16 gauge stainless steel with seams welded, ground, and polished.
2.8.3.1
Condensate Gutter
Hood shall be fabricated so as to form a condensate gutter 75 mm 3 inches
wide by 25 mm 1 inch high at the perimeter and shall be provided with a
condensate drain terminating at a floor sink location.
2.8.3.2
Duct Openings
Duct openings with collars shall be of quantity/size as indicated, with a
stainless steel louvered grille at the openings. Penetrations of the
dishwashing machine duct risers through the hood body shall be trimmed and
sealed.
2.8.3.3
Ceiling Recessed Exhaust Hood at Dishwashing Machines
Hood over dishwashing machines shall be constructed of 1.6 mm (16 gauge) 16
gauge stainless steel with all seams welded, ground, and polished. Both
long sides shall slope up to an 450 mm 18 inch interior height from 150 mm
6 inches above bottom edge. Body shall have a 50 mm 2 inch wide perimeter
flanged turned-up 19 mm 3/4 inch at 90 degrees (increase to 250 mm 10 inch
width at supply air diffusers). Make up air diffusers shall be at vertical
[interior] [exterior] length of hood. Duct openings with collars shall be
of quantity/size as indicated, with a stainless steel louvered grille at
the openings. Penetrations of the dishwashing machine duct risers through
the hood body shall be trimmed and sealed.
2.9
PREFABRICATED WALK-IN REFRIGERATORS
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NOTE: Designer will indicate, on the drawings, the
location and heights of the refrigerator coil and
the condensate drain lines. Coils and drain lines
are to be located so as not to restrict the full
utilization of the food storage racks. Drawings and
specifications will indicate that the condensate
drain lines are to be insulated. Locate on the
drawings the funnel floor drain for the condensate
drain. Floor drains and drain lines must not
protrude onto the walking surface or produce a
tripping hazard.
SECTION 11400A
Page 32
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