JSKI

The Jeven JSKI condensation hood has been designed for kitchens where a comfortable, productive and healthy indoor climate is required.
The JSKI canopy offers draught-free and drip-free ventilation with first class working conditions and thermal comfort.
JSKI is equipped with exhaust and supply air with damper plates and measurement taps. Supply air is introduced into the kitchen by supply air columns.
JSKI has special condensation baffles. Supply air columns ensure that the distribution of supply air is controlled and flexible.
Modularity makes it easy to vary both the number and positioning of the supply air columns.
The actual supply air pattern can be manually adjusted when working near to the canopy.
Supply air columns and condensation baffles are easy to wash in a dishwasher.

  • Functioning principle of JSKI canopies
  • Product code
  • Technical information
  • Installation
  • Product selection

Functioning principle


  1. Supply air is introduced through supply air columns,
  2. which allows an adjustment of the air pattern.
  3. Heat and steam rise into the hood.
  4. Condensated water & grease are removed by the baffles.
  5. Clean air is extracted.

jski functioning

Parts


  1. Outer casing
  2. Supply air connection and damper unit
  3. Light fixture
  4. Cable
  5. Condensation baffles, measurement tap for exhaust air
  6. Measurement tap for the supply air (behind the condensation baffles)
  7. Exhaust air connection and damper plate
  8. Personal supply air nozzle
  9. Supply air unit (detachable)
  10. Ceiling console
  11. Hanging bracket

JSKI_tuoterakenne

Product code


jski product code img

All Jeven condensation hoods come equipped with lights and condensation baffles.

The basic material is stainless steel (AISI 304).

Covering boards to enclose the area between the top of the hood and the ceiling.

Exhaust air

The recommended exhaust flow rate is max. 250 l/s per 315 mm spigot, duct velocity 3.2 m/s. The hoods are equipped with a suitable type of condensation baffles (pressure level 30-50 Pa).
The recommended exhaust flow is 100 to 200 l/s per hood meter.

Recommended exhaust flow/ spigot
Spigot size ø Exhaust flow
mm l/s m³/h
200 -90 -320
250 90-175 320-630
315 175-250 630-900
400 250-420 900-1510
500 420-700 1510-2520

Pressure loss and sound data

condensation img1

 

Sound Power level, Lw

Sound power level Lw in each octave band is computed by adding the corresponding factor, Kok to the sound power level LpA. Lw=LpA+Kok.

Factor, Kok

 Hz  125  250  500  1000  2000  4000
 Kok  6  5  4  -2  -8  -15
 tol.  ±3  ±3  ±2  ±2  ±3  ±4

condensation img2

Sound Power level, Lw

Sound power level Lw in each octave band is computed by adding the corresponding factor, Kok to the sound power level LpA. Lw=LpA+Kok.

Factor, Kok

 Hz  125  250  500  1000  2000  4000
 Kok  6  5  4  -2  -8  -15
 tol.  ±3  ±3  ±2  ±2  ±3  ±4

Supply air

The canopies are supplied from the factory with suitable air flow rates for a pressure level of 25-35 Pa.

Hood height Supply air unit width, B
mm 200 mm 500 mm
330 50-90 l/s
540 40-70 l/s 100-150 l/s

Pressure loss, Sound data and Throw length / Supply air unit

Spigot ø200 mm. Unit width 500 mm. Hood height 330 mm.

img1

 

Hz 125 250 500 1000 2000 4000
Kok -2 7 4 -5 -19 -26
tol. ±6 ±4 ±2 ±2 ±3 ±5


Spigot ø160 mm. Unit width 200 mm. Hood height 540 mm.

img2

 

Hz 125 250 500 1000 2000 4000
Kok -2 1 2 1 -7 -16
tol. ±3 ±3 ±2 ±2 ±3 ±4


Spigot ø250 mm. Unit width 500 mm. Hood height 540 mm.

img3

Hz 125 250 500 1000 2000 4000
Kok 6 8 4 -5 -10 -18
tol. ±3 ±3 ±2 ±2 ±3 ±4

 

The sound power level (Lw) in each octave band is computed by adding the corresponding factor Kok to the sound pressure level (LpA), as in Lw= LpA+Kok

Distribution of supply air

Jeven supply air columns deliver a controlled and flexible distribution of the supply air. It is possible to wash the supply air columns in a dishwasher and the inside of the supply air chambers is easy to clean. These columns allow an individual adjustment of air patterns and airflows, which means better indoor climate for the kitchen staff

Tuloilmanjako

  1. Unidirectional throw pattern
  2. Displacement throw pattern
  3. Bidirectional throw pattern

Supply air unit, damper open

Sound attenuation, dB
Hood height Spigot 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz
330 mm ø200 17 10 10 11 18 24
540 mm ø160 24 8 5 12 17 24
540 mm ø250 16 9 7 11 16 23

Installation

The hood shall be installed by hanging bars (f.ex. M8). These bars are not included in the delivery. Holes for the hanging bars should be drilled to the ceiling of the kitchen by using the shown fixture points.
Recommended height position of the hood is 2100-2200 mm.

Install plastic protective corner profiles on the lower end.

install img


K-coefficient exhaust air


Kondenssilevy_malli

Condensation baffle type

k jski img


 Condensation baffle type  Hood length  1,0m  1,1m  1,2m  1,3m  1,4m  1,5m  1,6m  1,7m  1,8m  1,9m  2,0m
 1/1   K1 m³/h  105  115  126  136  147  157  168  178  189  199  210
 K2 l/s  29,1  32,0  34,9  37,8  40,7  43,7  46,6  49,5  52,4  55,3  58,2
                         
 2/1   K1 m³/h  130  143  156  168  181  194  207  220  233  246  259
 K2 l/s  63,0  39,6  43,2  46,8  50,4  54,0  57,6  61,2  64,8  68,4  72,0
                         
 2/2   K1 m³/h  155  170  186  201  217  232  248  263  279  294  310
 K2 l/s  43,0  47,3  51,6  55,9  60,2  64,5  68,8  73,1  77,4  81,7  86,0
Q=Kx√Pm       Pm=(Q/K)²Pa 

 

Condensation baffle type Hood length  2,1m  2,2m 2,3m   2,4m  2,5m  2,6m  2,7m  2,8m  2,9m  3,0m
1/1 K1 m³/h 220 230 241 251 262 272 283 293 304 314
K2 l/s 61,1 64,0 66,9 69,8 72,8 75,7 78,6 81,5 84,4 87,3
                       
2/1 K1 m³/h 272 285 298 311 324 337 350 363 376 389
K2 l/s 75,6 79,2 82,8 86,4 90,0 93,6 97,2 101 104 108
                       
2/2 K1 m³/h 325 341 356 372 387 402 418 433 449 464
K2 l/s 90,3 94,6 98,9 103 108 112 116 120 125 129
Q=Kx√Pm           Pm=(Q/K)²Pa

K-coefficient supply air


 Width,mm  200  200  500  500
 Height, mm  290  500  290  500
 K1(m³/h)  45,0  77,0  96,0  192
 K2(l/s)  12,5  21,4  26,7  53,3
 Q=Kx√Pm       Pm=(Q/K)²Pa    

Cleaning

Condensation baffles are detached by lifting them up slightly. Condensation baffles can be washed in the dishwasher, after which they are replaced.

Wall surfaces are cleaned in connection with the kitchen normal cleaning or if necessary separately. Cleaning is carried out with detergent for stainless steel surfaces.

jski irr img

Dimensions of JSKI Condensation hoods


Hoods length, C and P dimensions can be chosen freely.

Standard dimensions

  • Height = 330
    • Module length
      • 1000, 1500, 2000, 2500, 3000
    • Width
      • 1100, 1200, 1300, 1400, 1500

  • Height=540
    • Module length
      • 1000, 1500, 2000, 2500, 3000
    • Width
      • 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800
B (mm) Height (mm) F (mm) øD (mm) G (mm) E min (mm) K min (mm) M (mm)
200 540 500 160 100 400 350 65
500 330 290 200 125 700 500 110
500 540 500 250 150 800 550 110

Wall hood

img wall jski

Island type hood

jski island img


Positioning of the hood


The size of the canopy is determined by the size of the kitchen equipment. The overhang depends on the type of equipment and the distance between the hood and the equipment. For this type of equipment, the overhang should be at least 300 mm. The typical distance between the hood side and the floor is 2100-2200 mm.

If the equipment has any doors that open upwards, make sure there is enough distance to the canopy.

jski img positioning

Calculation of air flows

Design Service