KWI 20/KWI/xxxx/0306/EN - Allied Metalsalliedmetals.com/cms/data/product/pdf/117-pdf-5155.pdf · 1 Outer casing in stainless steel AISI 304 2 Exhaust air ... 2 Exhaust air connection

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KWI - Capture Jet Canopy with Water Wash

KWI Capture Jet Canopy with Water Wash

The KWI kitchen ventilation canopy is a water-wash

canopy for the exhaust of contaminated air released

by the cooking process and removal of the excess

heat emitted by the cooking appliances.

The highly efficient KWI canopy uses Halton Capture

Jet™ technology, which allows the canopy to operate

with up to 30% lower exhaust airflow rates than

traditional hoods do.

The KWI kitchen canopy automatically washes down

the grease filters without the need for removal of the

filters from the canopy. The washing cycle is fully

automatic and programmable for use in different

operating conditions. The washing process can be

manually overridden, when required.

• Automatic periodic cleaning of the exhaust plenum

and KSA grease filters

• Minimal maintenance requirements, reducing the

work load for personnel cleaning the filters

• High level of hygiene facilitated

• Prevention of the build-up of grease deposits, which

pose a serious fire hazard

• Halton Capture Jet™ technology, reducing

the required exhaust airflow rate and improving the

capture and containment efficiencies of the canopy,

while reducing energy use

• Individually adjustable personal supply air

nozzles located within the front supply plenum, to

compensate for the effects of the radiant heat

emitted by the cooking equipment

• High-efficiency grease filtration using *UL - and

**NSF-classified Halton KSA multi-cyclone filters -

removal of up to 95% of particles with a size of 8

microns or above

• Supplied as standard with lighting, balancing

dampers for both supply and exhaust air and T.A.B.™

testing and balancing taps, which allow accurate and

effective balancing of airflows, and efficient

commissioning

• Stainless steel (AISI 304), welded construction

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Construction

The KWI canopy comprises a Capture Jet™ air supply

module, a light fitting, adjustment dampers, airflow

measurement taps and KSA grease filters.

The exposed parts of the canopy are manufactured

from polished stainless steel (AISI 304) and the

unexposed parts from galvanised steel.

The joints on the lower edge of the canopy are fully

welded.

A collection tray or a drain tap is fitted into the grease

drain channel in order to enable removal of the grease

and dirt extracted by the KSA multi-cyclone filters.

The Capture Jet™ supply plenum is thermally

insulated through the use of non-fibre-releasing

material to prevent water from condensing on the

inner face above the cooking equipment.

DIMENSIONS

KWI mm

Length �000....�000

Width �000....�700

�000....�400 for Island model -Two sections

Height 555

QUICK DATA

CODE DESCRIPTION1 Outer casing in stainless steel AISI 304 2 Exhaust air connection and damper plate 3 Supply air connection and damper plate 4 Installation hatch 5 Light fixture 6 Capture air nozzles7 KSA grease filters8 Drain connection9 Thermal insulation10 Adjustment wires for capture air11 Washing module12 Personal supply air nozzle13 Hanging brackets 14 Spray nozzles16 Keyboard and screen as operator panel17 Fan switch18 Emergency switch19 Fire switch – option

Recommended Exhaust air volumes Recommended Capture Jets air volumes

L l/s m�/h H=555 mm

�0 l/s / meter length or 7� m�/h / meter length LpA < 45 dB(A)

�500 ��5...447 846...�6�0

�000 ��0...580 ��6...�088

�500 4�0...770 �5��...�77�

�000 460...860 �656...�096

Exhaust air volumes indicated above are for a recommended pressure loss of KSA filter between �5…��0 Pa

* UL= Underwriters Laboratories (UL is an independent organization founded by the insurance industry in the U.S.A, giving approvals to safety tested products). ** NSF= National Sanitation Foundation (promoting hygiene and sanitation in the U.S.A)

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CODE DESCRIPTION1 Outer casing in stainless steel AISI 304 2 Exhaust air connection and damper plate 3 Supply air connection and damper plate 4 Installation hatch 5 Light fixture 6 Capture air nozzles7 KSA grease filters8 Drain connection9 Thermal insulation10 Adjustment wires for capture air11 Washing module12 Personal supply air nozzle13 Hanging brackets 14 Spray nozzles16 Keyboard and screen as operator panel17 Fan switch18 Emergency switch19 Fire switch – option Function

The kitchen canopy above the cooking appliances

contains the rising warm air and contaminants (1).

The capture air jets (2) direct the contaminated air

toward the KSA grease filters (3), where grease

particles and other impurities are separated from the

exhaust air using the cyclone separation principle.

The water and detergent mixture (4) is sprayed onto

the filters during the washing cycle in order to remove

the contaminants.

The waste from the washing cycle is drained from the

canopy via the drain tap connection (5).

The detergent and water are mixed before application

within a separate wall-mounted control cabinet (6).

Individual supply air nozzles (7) are adjustable. They

can be used to increase air velocities in the work area

near the cooking equipment in order to compensate

for the effects of radiant heat emitted by the cooking

equipment.

Accessories

• General exhaust (GE)

• Cover boards - for canopies below ceiling level

• Infill panels

• KSA grease filter height options for different airflow

ranges

• Blind filter in stainless steel

• Integrated light fitting - IP 65 (high ambient

temperatures)

• Surface mounted light - IP 65 (max. ambient

temperature: 35 °C)

• Non-standard spigots: choice of size and position

• Canopy cut-outs to fit around columns

• Exhaust/supply top panel in stainless steel

• Capture Jet™ fan

• Personal supply air nozzles

• Booster pump when water pressure < 4 bars

• Shut off damper - actuator - fusible link

• Control cabinet - manual version

Heat spilling Capture &containment

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DIMENSIONS (mm)

KWI - � - Wall model

L �000......�000

B �000......�700

H 555

D� �60

D� ��5

G ��0

C �80

Note: The dimensions above are for modular sections only; larger canopies are assembled using a combination of separate modules, which makes transportation and site handling easier.

Light

A ��5

P �90

F �90

E �90 (B < ��00), 490 (B>��00)

I 680 (L<�400, �x�8w), ��85 (L >�400, �x�6w)

LOCATION OF CONNECTIONS (mm)

For typical sizes

Exhaust Supply

�x��5 �x��5 �x�60

L M K J J

�500 �75 750 L/� 750

�000 500 �000 L/� �000

�500 500 �500 L/� ��50

�000 500 �000 L/� �500

Mounting bracket 150 mm high

Position of Drain connection

555 mm

L/B ��00 ��00 �500 �700

�500 9� 97 �06 ��

�000 ��5 �� 7 ��

�500 ��6 �4� �48 �54

�000 �57 �64 �70 �76

WEIGHTS (KG)

4 5


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DIMENSIONS (mm)

KWI - � - Island model - Two sections

L �000......�000

B �000......�400

H 555/400

D� �60

D� ��5

G ��0

C �80

Note: The dimensions above are for modular sections only; larger canopies are assembled using a combination of separate modules, which makes transportation and site handling easier.

Light

A ��5

P �90

F �90

E �90 (B < ��00), 490 (B>��00)

I 680 (L<�400, �x�8w), ��85 (L>�400, �x�6w)

Mounting bracket 150 mm high

Position of Drain connection

LOCATION OF CONNECTIONS (mm)

For typical sizes

Exhaust Supply

�x(�x��5)

�x(�x��5)

�x(�x�60)

L M K J K

�500 �75 750 L/� 750

�000 500 �000 L/� �000

�500 500 �500 L/� �500

�000 500 �000 L/� �000

555 mm

L/B ��00 �600 �000 �400

�500 �8� �94 ��

�000 ��0 �4� �54 �66

�500 �7� �84 �96 �08

�000 ��4 ��8 �40 �5�

WEIGHTS (KG)

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Dimensions (mm)

CONTROL CABINET – Automatic version

Plumbing: Hot water inlet �8 mm / outlet �� mm Drain connection �”

Plumbing: Hot water inlet �8 mm / outlet �� mm Drain connection �”

Engineering data

Hot water requirement

Temperature: 55°C min – 75°C max

Flow pressure: 3 bar min – 6 bar max

Average water consumption: 35 l/m/day (4bar)

Average detergent consumption: 0.3 l/wash

Typical wash cycle is 2 to 4 minutes for light-duty equipment and 4 to 6 minutes for heavy-duty equipment.

Wash system

Pumps Detergent pump

Booster pump (option, when water pressure is<4bars)

Back flow preventer

CONTROL CABINET – Manual version (optional)

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NPressure drop and sound data, exhaust

H= 555, HF= ��0 (Std KSA filter)

∆pm1 = Pressure loss of filters measured from

measuring tap, minimum exhaust pressure

loss when the damper plate is open

∆pm2 = Maximum exhaust pressure loss when the

damper plate is nearly closed.

Recommended pressure loss of filter ∆pm1 35-120 Pa

KWI-�000

KWI-�500 - KWI-�000

KWI-�500

Example: KWI/� - �000 - HF (standard filter; 500x��0x50) Qv = �00 l/s with � blind filter, ∆ptot = 56 Pa

no blind filters

no blind filters

no blind filters

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∆pm2

∆pm2∆pm2

Pressure drop and sound data, capture air

H=555 - No personal Nozzles within the front

supply plenum

∆pm1 = Measured pressure difference, PA

∆pm2 = Maximum supply pressure loss when the


TP = Damper plate

0 = No personal nozzles within front supply plenum

KWI-�000

KWI-�500 KWI-�000

KWI-�500

Example: KWI/� - �000 - NP (Canopy ordered, without personal nozzles) Qv = 40 l/s ∆ptot = ��4 Pa LpA = �7 dB(A)

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NPressure drop and sound data, capture air

KWI/WP, H=555 - Personal Nozzles located within

the front supply plenum

∆pm1 = Measured pressure difference, PA

∆pm2 = Maximum supply pressure loss when the


0 = Personal nozzles closed1 = Personal nozzles open

KWI-�000

KWI-�500 KWI-�000

KWI-�500

Example: KWI/� - �000 - WP (Canopy ordered, with personal nozzles) Qv = 40 l/s - Personal nozzles closed (0) ∆ptot = 80 Pa LpA = �� dB(A)

∆pm2 ∆pm2

∆pm2∆pm2

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Suggested specifications

GeneralThe water-wash kitchen canopies shall be constructed from stainless steel AISI 304.The kitchen canopies shall be supplied complete with outer casing / main body, supply air plenum, pressure measurement taps, supply and exhaust air spigot connections with adjustment damper, installation hatch, fluorescent light fitting, capture air jet and personal supply air nozzles, grease filters, perimeter drain channel, adjustment wires for supply air and assembly, automatic washing module and separate control cabinet.

Outer casing / main bodyOuter casing panels shall be constructed of stainless steel sheet AISI 304 with a brushed satin finish. Each joint shall be spot-welded, riveted or machine-stitched. The canopy shall be provided with a full-perimeter condensate channel and crush-folded sloping edges, which are to be properly deburred.The joint of the lower edge shall be fully welded. Washing moduleGrease filters shall have an automatic washing cycle utilising warm water and detergent via nozzles. The mixing of the detergent occurs within a separate control cabinet. The wastewater shall be removed from the canopy by a direct drain connection.The casing of the control cabinet shall be constructed of stainless steel sheet AISI 304.The control cabinet shall conform to the EMC standard. Supply plenumThe supply air plenum shall be insulated with an M0 sealed glass wool slab of density 95 kg/m3 and shall be provided with access through removal of the main casing’s stainless steel front panels.The plenum top panels (supply and exhaust) shall be constructed of galvanised steel.

Personal supply air nozzlesThe supply air nozzles shall be constructed from ABS plastic and shall be adjustable to provide directional airflow.

Capture Jet™ systemThe canopy shall be designed with capture air jet technology to reduce the exhaust airflow rate required and increase the capture and containment efficiencies of the canopy, while reducing energy use. Pressure measurement tapsThe pressure measurement taps shall be located on the inside of the canopy for supply air and exhaust air measurement. Grease filtersThe grease filters shall be constructed of stainless steel AISI 304 and shall be NSF and UL classified.The grease filters shall be supplied in modular size 500 x 330 x 50 mm (500 x 500 x 50 mm) and shall be removable via two folding handles.The grease filters shall have a honeycomb design in order to allow high grease filtration efficiency due to the vortex flow within the honeycomb.

Spigot connectionsThe spigot connections for supply and exhaust air shall be constructed from galvanised steel and shall be supplied with a gasket and adjustment damper also manufactured from galvanised steel.The exhaust damper shall be adjustable. The supply air damper shall be adjustable via stranded wire cables with a high tensile strength. Fluorescent light fittingEach canopy shall be delivered with a fluorescent light fitting providing an average illuminance of approximately 500 lux at the work surfaces of the cooking appliances.The light fitting shall be suitable for a single-phase 230-VAC power supply and shall be manufactured to be of protection class IP 65.The ballast and capacitor shall be located within the light fitting housing. The light fittings shall be hinged to allow access to the canopy roof.A core electric cable (3x1 mm²) connecting the light fitting to the junction box shall be provided. Access hatchEach canopy shall be provided with an access hatch made of stainless steel AISI 304 with a plain milled finish, surrounded by a tempered glass light diffuser.The heat tolerance of the glass shall be -40 to +300 °C.The hatch shall be hinged and held in position with screws.

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KWI-L-W

L = Length 1000,+50,..,3000

W = Width 1000,+50,..,1700

Specifics and accessories

EC = Number of exhaust connections 1 1 pcs 2 2 pcs

Code example

KWI-1000-1000, EC=1,CD=D

Sub products

KB Cover board KI Infill panel KT Canopy top list

Documents

KWI 20/KWI/xxxx/0306/EN - Allied Metalsalliedmetals.com/cms/data/product/pdf/117-pdf-5155.pdf · 1 Outer casing in stainless steel AISI 304 2 Exhaust air ... 2 Exhaust air connection