Duke DS User Manual
SUGGESTED SPECIFICATIONS FOR VENTILATOR MODEL DS
Exhaust Ventilator to be SOUTHERN ENGINEERING SYSTEMS by Duke Mfg Co., model
DS, Type I, UL Listed, and in compliance with NFPA Bulletin 96. Ventilator shall be an island style,
high velocity, low volume, wash type and have a nominal 95% grease extraction efficiency certified by
an independent testing laboratory.
Canopy, constructed of 18-gauge stainless steel (where exposed) with bottom perimeter edges
gutterless. Weld extraction chamber, plenum, and external seams and joints to form a liquid tight
construction. Polish stainless steel to a #3 finish.
Exhaust plenum Extraction Chamber to be dual slot, same material as canopy, full length of section
at the center. Furnish water wash manifold consisting of a series of brass spray nozzles installed within
chamber. Manifold to be positioned within plenum area out of air-stream to minimize nozzle clogging.
Bottom of exhaust plenum to be formed into a pitched trough to allow laminar flow, during wash cycle,
to drain pipe connection.
Water Wash System to serve the dual purpose of daily cleaning and fire control. The wash cycle shall
be initiated when the stop/wash button on the control cabinet (required with each hood system) is
depressed. Internal cleaning will be achieved by means of 110˚ - 160˚F water mixed automatically with
injected detergent. In the event the fire control system is activated, the system shall supply a continuous
fire quenching spray. Fire quenching spray shall continue to operate until the reset button is pushed.
Pressing the start button will restart the fan system.
Install hinged, motorized Fire Dampers full length at both air inlets of ventilator. Dampers open when
ventilator is in normal operation, acting as an extracting baffle, and closes when ventilator is turned off
to allow thorough cleansing of extraction chamber interior. Damper automatically closes, sealing
interior of ventilator from fire when thermostat senses 325˚F.
Furnish Duct Collar, fully welded, complete with fire detection thermostat, in top of canopy within
exhaust plenum area. Duct collar size based on an average 1800 F.P.M. air velocity.
Integral Make-Up Air shall NOT be furnished. Bottom edge of canopy flanged inward forming
channel type edge fitted with 18-gauge stainless steel stationary panels. Extend panels to finished ceiling
(9’0” max.) on all exposed sides forming box type construction.
Furnish UL listed, NSF listed, vapor proof incandescent Light Fixtures installed on 3’ to 4’ centers.
Fixtures to be completely inter-wired to a junction box and left ready for final connection to power
source. Field connections, light switch and bulbs by applicable trades.
Furnish Rod Hanger Brackets at front and center to suspend canopy from ceiling.
Canopy shall be UL Listed and NSF approved. Equipment built in an ISO 9001:2000 approved
manufacturing facility.
2305 N. Broadway
St. Louis, MO 63012
Ph 314-231-1130
Fax314-231-5074
www.dukemfg.com
BY
"Your Solutions Partner"
6/07
Exhaust Requirements
CFM ________________ SP (“w.g.) _____________
Duct Collar ________ “x ______________”
Fire Protection Lighting Fixture (UL listed)
Submit cooking equipment plan showing make Recessed fluorescent
(
and model on equipment.) Globe incandescent (100W)
Recessed incandescent (150W)
Ansul Wet #R-102 Light switch
Other ___________________________________ NOTE: Incandescent lights are ocated
Internal Piping Only on approx. 4’ centers. Fluorescent
Complete System fixtures are 3’ (50W) and 4’ (64W )
By Others
NOTE: Fuel shut-off devices by others (unless specified
Optional Accessories
otherwise). Enclosure paneling
(Finished ceiling higher than 9’0”)
Continuous Cold Water Mist
Design Option
VC-1C S/S Control Cabinet with push button controls
VC-1M S/S Control Cabinet with programmable Mode Commander Microprocessor
Shipping Wt. 150 lbs./Linear Ft.
COMMENTS/NOTES:____________________________________________________________________
'- "
3/8" DIA. G.I. ROD HANGERS
FURN. BY OTHERS
STATIONARY S.S. PANELING
INCANDESCENT LIGHTS
(FLUORESCENT LIGHTS (OPTIONAL)
BULBS NOT INCL.
2'-6"
6'-6" A.F.F.
2 1/4"
VENTILATOR DRAIN
"
6"
2'-0"
4"
'- "
(72" MIN. STD.)
FIELD JOINT
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