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The model R-NDI is an exhaust only island
hood rated for all types of cooking equipment. Hood shall have
size, shape and performance specified on drawings.
Construction shall be
type 430 stainless steel with a #3 or #4 polish where
exposed. Individual component construction shall be determined by
manufacturer and UL. Construction shall be dependent on the structural
application to minimize distortion and other defects. All seams,
joints and penetrations of the hood enclosure to its lower
outermost perimeter that directs and captures grease-laden vapor
and exhaust gases shall have a liquid-tight continuous external
weld in accordance with NFPA 96. Hood shall be wall type with a
minimum of four connections for hanger rods. Connectors shall
have 9/16" holes pre-punched in 1 ½" x 1 ½"
angle iron at the factory to allow for hanger rod connection by
others.
Ventilator shall be furnished with UL
classified stainless steel baffle filters, supplied in size and quantity as
required by ventilator. The filters shall extend the full length
of the hood and the filler panels shall not be more than 6"
in width.
The hood manufacturer shall supply
complete computer generated submittal drawings including hood
sections view(s) and hood plan view(s). These drawings must be
available to the engineer, architect and owner for their use in
construction, operation and maintenance.
Exhaust duct collar to be 4" high
with 1" flange. Duct sizes, CFM and static pressure
requirements shall be as shown on drawings. Static pressure
requirements shall be precise and accurate; air velocity and
volume information shall be accurate within 1-ft increments along
the length of the ventilator.
UL incandescent light fixtures and
globes shall be installed and pre-wired to a junction box. The
light fixtures shall be installed with a maximum of
4’0" spacing on center and allow up to a 100 watt
standard light bulb.
The hood shall have:
- A double wall insulated front to eliminate
condensation and increase rigidity. The insulation shall have a flexural
modulus of 475 EI, meet UL 181 requirements and be in accordance with
NFPA 90A and 90B.
- An integral baffle to direct grease laden
vapors toward the exhaust filter bank.
- The grease drain system shall be
an enclosed integral part of the hood back and have slope
with an exposed, removable ½ pint grease cup to
facilitate cleaning.
The hood shall be ETL Listed as
"Exhaust Hood Without Exhaust Damper", ETL Sanitation Listed and
built in accordance with NFPA 96.
The hood shall be listed for 400°F
cooking surfaces at 346 CFM/ft, 600°F cooking surfaces at 422 CFM/ft,
and 700°F cooking surfaces at 475 CFM/ft. The hood shall be ETL Listed
as "Exhaust Hood Without Exhaust Damper". A built-in
wiring chase shall be provided for outlets and electrical
controls on the hood face and shall not penetrate the capture
area or require an external chaseway.
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