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Britannia Kitchen Ventilation Recirculation Units Request Britannia Kitchen Ventilation Recirculation Units information
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Category: Technical information associated with Britannia Kitchen Ventilation Recirculation Units

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Britannia Kitchen Ventilation Ltd
Kitchen Ventilation - Recirculation Units

Material of Construction

Britannia’s canopies are manufactured from type 304 Austenitic stainless steel. All visible surfaces are fine grain satin polished and welding is of high penetration, reground and polished to match the original finish.

Stainless steel provides an extremely durable finish, which matches other items of catering equipment, the material has excellent resistance to fire, unlike aluminium. Joints in the canopies are formed by means of an internal standing seam joint with stainless steel nuts and bolts which are then covered by a full height cover strip sealed to the canopy valance with food grade sealant. All canopies include a full perimeter integrally formed condensation channel with double angled lower edge for strength and aesthetics. The condensation channel is complete with stainless steel drain plugs and neoprene gaskets. Britannia stainless steel canopies can also be powder coated to provide a coloured finish to suit particular architectural requirements.

Kitchen Canopy Sizing

As a general rule canopies should be mounted so that the underside of the canopy is 2000mm above finished floor level. When sizing canopies it is most important that the plan size is large enough to cover the cooking equipment with adequate overhang.

Overhangs to allow are generally:

At the end of equipment range 300mm
At the front face of equipment 300mm minimum

Grease Filter Panel Performance

Grease Filter Panel Performance

Britstream stainless steel baffle grease filter panels provide a constant pressure drop of 110 Pa at the duct connection spigot in addition to providing a positive flame barrier. The panels are available in three sizes.

Panel Size Volume at 100 Pa

500 x 250 x 50mm 0.14 m³/s
500 x 400 x 50mm 0.22 m³/s
500 x 500 x 50mm 0.285 m³/s

Kitchen air recirculation unit

Canopy Lighting

Britlux recessed fluorescent light fittings are designed for use in the hot greasy atmosphere of kitchen canopies.

Lights are prewired to a junction box and are complete with toughened glass diffuser, which is removable for access to the tubes, and sealed with closed cell neoprene tape.

Units are available in lengths of 740mm (1090 lumens per tube) and 1640mm (4550 lumens per tube).

Calculations

Maintenance Factor = 0.7

Utilisation Factor = 0.25 Average through life lamp, calculated after 2000 hours.

The self contained kitchen ventilation system, with intelligent controls package, ideal for use where ductwork cannot be installed, or when its not possible to discharge the extract to atmosphere.

Principal of Operation:

Contaminated air from the cooking application is drawn through Superstream high efficiency baffle type grease filter panels located within the main canopy unit. The air is then drawn through the extract plenum into the top of the integral services tower.

The extracted air is then passed through six stages of additional filtration in the services tower to remove grease, smoke and odour.

This cleaned air is then reintroduced into the canopy via an integral supply air plenum which distributes the air through the front face diffuser and personal spot coolers back into the kitchen.

The standard system is supplied with an on/off switch with speed control facility. You can provide greater control of your refresh unit by selecting the optional controls package. The controls package is designed to provide audible and visible warnings when the internal filters require maintenance or replacement.

Important Notes:

Due to requirements of Gas Regulations, Refresh Units can only be used over electrically powered cooking equipment.

Refresh does not include equipment to reduce the extracted air temperature; therefore consideration should be given to provide cooling within the kitchen.

Kitchen canopy technical information

 

Kitchen Canopy Sizing

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Britannia Kitchen Ventilation Ltd
Unit 10 Highdown Road
Sydenham Industrial Estate
Leamington Spa
Warwickshire
CV31 1XT

Tel: 01926 463540
Fax: 01926 463541

Kitchen extraction technical data

Commercial kitchen extract system
 

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