JSI-UV canopy - Ultraviolet and cyclonic filters, and supply air JSI-UV hoods Product Description Lights and filters

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1 JSI-UV canopy - Ultraviolet and cyclonic filters, and supply air Product Description The Jeven JSI-UV canopy has been designed for kitchens where a comfortable, productive and healthy indoor climate is required. JSI-UV is equipped with exhaust, supply and direction air. Unique draftless supply air diffusion and effective grease extraction provide a comfortable and pleasant working environment. UV supply air hoods are suitable for professional kitchens where effective grease extraction is needed. In addition to JCE cyclone filters, the JLI-UV hood also has a UV-filter unit for removing grease and impurities from the exhaust air. In island models the supply air units can be located on all sides of the canopy. Supply air patterns are easy to adjust and the supply air unit's front panel can be removed and washed in a dishwasher, just like the JCE cyclone filters and the mesh filter. The hood is equipped with airflow damper plates and measurement taps on both the exhaust and supply air. Lights and filters The JSI-UV hood comes with ultraviolet (UV) filters, JCE cyclonic filters, a stainless steel net filter, a pressure guard switch and lights. The UV filter unit includes a UV frame with UV-tubes, as well as a UV control unit and panel. Material The supply air hood's base material is stainless steel (AISI 0). Wall materials can be either stainless steel or laminated glass. Accessories Covering boards from the hood's top edge to the false ceiling. Product Code UV-Supply Air Hood JSI-R-UV 000x00x0 - x0 - x m/s - 0. m/s Wall material R=Stainless steel S=Glass UV=UV-filter unit Length Width Height Number and size of the supply air spigots Number and size of the exhaust air spigots Supply air flow, m/s Exhaust air flow, m/s Phone: 0 9 0

2 Functioning principle of the JSI-UV canopy. Supply air is distributed through supply air units.. Kitchen staff can adjust the air pattern with the individual nozzles.. Heat and impurities rise into the hood.. Direction air prevents air leakages and directs heat and impurities towards the grease filters.. The effective -phase UV filter extracts grease and dirt from the exhaust air.. Clean air leaves the filter. Functioning principle of the UV filter unit PHASE. Grease laden air enters the filter.. Grease particles are extracted as the air spins in a cyclone (>µm particles). Grease drains down to the bottom of the filter unit. PHASE. When air flows through the wire mesh filter, the temperature goes down and a smooth air stream is created. Some of the remaining smaller particles are separated. Phone: PHASE. Ultraviolet light and ozone are generated by UVfluorescent tubes placed in the reaction chamber. When the air stream meets UV light and ozone, the remaining grease and odour decompose and break down. Only carbon dioxide, water and a small amount of dust remain.. Clean air is released into the exhaust ducts.

3 Parts of the JSI-UV canopy Outer casing. Supply air connection and air volume control. Light fixture. Light cable (approx m). UV filter unit. Direction air unit with measurement tap for the supply air flow. Exhaust air connection and the air volume control. Personal supply air nozzles 9. Fascia of the supply air unit (detachable) 0.Ceilling console.hanging bracket.pressure sensor.pressure measuring hosepipe.uv control centre.uv touch screen.control panel s cable.wire from the UV unit to the control centre..main power cable (must be equipped with a safety fuse) 9.Wire from the pressure sensor to the UV-control centre. Phone: 0 9 0

4 Parts of the UV filter unit UV+mesh filter chamber Exhaust air connection and airflow damper Stainless steel frame with UV-lamps Cyclone filters Measurement tap for exhaust airflow Table for calculation of the airflow rate Mesh filter Cleaning door Phone: 0 9 0

5 Dimensions ØD K B E A height F E width A A-A 0 JSI-UV wall hood C (module) M length length G JSI-UV island type hood The canopy's length, width, and C and E dimensions can be freely chosen at 00 mm intervals, taking into account the following limitations: - Minimum module size: 00mm x 00mm - Maximum module size: 000mm x 00mm - Standard heights: 0mm and 0mm. Ø 00 B Height F ØD G Emin Kmin mm mm mm mm mm mm mm M mm E width C ØD K E B (module) Custom solutions are available from the Jeven Design Service Department and will be designed to suit individual requirements. length The Design Service Department can be contacted on and design@jeven.co.uk UV filter unit Ø Phone: 0 9 0

6 Recommended supply airflow rates Recommended supply airflow rates per supply air unit. The recommended supply air for the hood is 0-90 % of the hood's exhaust airflow, which is based on the convection airflow of the kitchen devices below the canopy. Hood height Supply air unit width (B) Hood heigth mm mm mm m/s m/s m/s m/s mm 0 0 Supply air unit width (B) 00 mm 0-0 m/h 0-0 m/h mm 0-0 m/h 0-0 m/h The hood is preset at the factory to be ready to use with a project-specific airflow for a pressure drop of - Pa. Pressure loss, Sound data and Throw length / Supply air unit Spigot Ø 0 mm Unit width 00 mm Hood height 0 mm Damper / closed Spigot Ø 00 mm Unit width mm Hood height 0 mm. Damper / closed Damper open LpA =db - 0, 0 0 L0, (m), LpA =0dB 0 LpA =db 0 LpA =0dB [m /s] m/h L0, (m) 0, 0,, ± ± LpA =db LpA =0dB 0 LpA =db 0 LpA =0dB [m /s] m/h L0, (m), ± Damper open Damper / closed 0 LpA =0dB LpA =db 0 LpA =0dB [m/s] m/h 0, 0, LpA =db - 0 ± Damper open ± Spigot Ø 0 mm Unit width mm Hood height 0 mm. Spigot Ø 0 mm Unit width 00 mm Hood height 0 mm. Damper / closed LpA =db LpA =0dB 0 LpA =db 0 LpA =0dB [m /s] m/h 0, Damper open , 0, , L0, (m) ± The sound power level (Lw) in each octave band is computed by adding the corresponding factor to the sound pressure level (LpA), as in Lw = LpA + Phone: 0 9 0

7 Exhaust flow rates Exhaust air flows are calculated according to the DW/ standard, based on the type, size and power source of the kitchen equipment located under the canopy. Coefficient Kitchen equipm. C Size Power source Exhaust mm x mm gas/electric m/s Objectives of kitchen ventilation Total. m/s The Jeven free design service team can help you with these calculations. Simply a drawing of the kitchen and the list of cooking equipment to design@jeven.co.uk and we will calculate all the necessary airflows and also prepare a drawing of the canopies for you for free.. Cooking vapours and heat should be removed with the help of efficient local exhaust in such a way that contaminants do not pass though the staff s breathing zone.. Temperature, velocity and cooling effect of the supply air should be comfortable.. In cases where staff are subjected to high heat radiation, they should be able to adjust the supply air (local cooling). Grease extractors should be fire-proof and, as with supply air units, should be easy to maintain.. Air flow rates should be easily adjustable. Recommended exhaust air flows / UV-unit Pressure loss and Sound data Number of cyclones 0 00 Our design service team makes a tailored solution for your kitchen, taking into account the cooking equipment and all the available information about the kitchen. We also provide CAD drawings of the new canopies, so you have a complete solution. Contact the Jeven design team today: design@jeven.co.uk Pressure loss The Jeven free design service helps you calculate the necessary airflows for your kitchens and can also provide drawings. This saves you lots of time. Airflow rate Number of m/s m/h cyclones db(a) = db(a) =0 Power of the UV-lamps x9w=w x9w=w x9w=w x9w=w x9w=w m/s m/h Sound power level, Lw The sound power level (Lw) for each octave band is calculated by adding the corresponding factor () to the sound pressure level (LpA), as in Lw = LpA + The number of cyclones depends on the air outflow. The nominal airflow per cyclone is about 0.0 m/s (0 m/h). With that airflow, the pressure difference across the cyclone is 0-0 Pa. The factory always delivers an appropriate number of cyclones so that the pressure drop in every cyclone is in that range (unless otherwise agreed). units of 9W UV lamps are always included. The UV filter unit's exterior dimensions are always the same. factor ± Phone: 0 9 0

8 Ultraviolet light The UV filter unit works on a photo oxidation basis, and generates ozone with the help of ultraviolet lamps. As a joint effect of ozone and ultraviolet light, grease produced during cooking is turned into oxygen, carbon dioxide, water and a polymerised (dust-like) grease. Odour molecules are oxidised into water and carbon dioxide. In the UV filter unit, ultraviolet light breaks down the protein chains in the grease molecules, so it is easy for ozone to react with these now smaller molecules. UV-lamps x9w in the UV-frame. Full realisation of the process requires at least two seconds of ozone time, so the exhaust ductwork must be sufficiently long. Extra ozone created during the process turns back into oxygen. It is dangerous to look at blue ultraviolet light without safety glasses. Never look directly at the light source for more than three seconds without safety glasses. UV filter units are always delivered with a pressure sensor, which ensures that the exhaust fan is running when ozone is created. This prevents ozone from leaking into the kitchen if for any reason the exhaust fan stops. Deliveries always include a UV touch screen, which is used to turn the unit on and off Instructions Installation instructions with switch diagrams as well as maintenance and usage instructions are always delivered to the workplace in the main delivery. The UV frame and its lamps are easy to install and maintain. Phone: 0 9 0

9 Light fixture 0 B ) Light fixture, as standard, IP T B= mm, ( xw, xw, xw ) B= mm, ( xw, xw, xw ) T B= 0 mm, ( xw, xw, x9w ) B= 0 mm, ( xw, xw, x9w ) ) ca. m cable, type EKK x. By default, every hood module comes with a light fixture. The light fixture has a cable, which should be connected to a junction box with a cable lock. The junction box is not included. We reserve the right to make changes to products without prior notice Phone: