Ferdinand Schad KGSteigstraße 25-27

D-78600 KolbingenTelephone +49 (0) 74 63 - 980 - 0

Fax +49 (0) 74 63 - 980 - 200info@schako.dewww.schako.de

Ventilation grilleLK

Contents

Construction subject to change. No return possible!

Ventilation grille LK

01/12 - 2 05.10.2018Version:

Description ........................................................................................................................................3Construction .............................................................................................................................................................................. 3Model ......................................................................................................................................................................................... 3Accessories ................................................................................................................................................................................ 3Fastening ................................................................................................................................................................................... 3

Models and dimensions .........................................................................................................................3Dimensions ................................................................................................................................................................................ 3Dimensions of accessories ........................................................................................................................................................ 4Fastening methods ..................................................................................................................................................................... 4

Technical data ....................................................................................................................................5Pressure loss and noise level ..................................................................................................................................................... 5Maximum end velocity of jet ...................................................................................................................................................... 7Jet path ...................................................................................................................................................................................... 8Critical jet path ........................................................................................................................................................................... 8Maximum penetration ................................................................................................................................................................ 9Induction and temperature ratios ............................................................................................................................................. 10Minimum distances ................................................................................................................................................................. 10Correction factor (for scattered air jet) ..................................................................................................................................... 11

Legend ........................................................................................................................................... 11Order code LK ................................................................................................................................... 12Specification texts .............................................................................................................................. 12

Ventilation grille LK

01/12 - 3

Construction subject to change. No return possible!

05.10.2018Version:

DescriptionVentilation grille type LK-1Supply and return air grille with front frame and circumferentialfoam seal. With front side individually adjustable, horizontal airdeflection blades.

Construction

Model

Accessories

Fastening

Models and dimensionsDimensionsLK-1

With intermediate rail for lengths from 525 (see page 4)

All models based on the basic type LK 1LK-2

LK-3

Available sizes

All combined lengths and heights available!

Grilles- Plastic (Hostalit Z), colour grey

Blades- Plastic (Hostalit Z), colour grey

LK-1 - horizontal air deflection bladesLK-2 - Horizontal air deflection blades with vertical indi-

vidually adjustable air bladesLK-3 - Horizontal air deflection blades with vertical indi-

vidually adjustable ladle blades

Installation frame (-ER1)- Electrolytically galvanised sheet steel

Installation frame with wall anchors (-ER2)- Electrolytically galvanised sheet steel

Screw mounting (-SM)- Standard, screws must be provided on site, concealed

mounting not possible

L L1 L2 H H1 H2 H3325 354 309 75 109 60 64425 454 409 125 159 110 114525 554 509 225 259 210 214625 654 609 325 359 310 314825 854 809

1025 1054 10091225 1254 1209

Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051pitch 3.9 (on-site)

Ventilation grille LK

01/12 - 4

Construction subject to change. No return possible!

05.10.2018Version:

Dimensions of accessoriesInstallation frame without wall anchors (-ER1)Installation frame with wall anchors (-ER2)

Wall anchors available at an extra charge only.

Fastening methodsScrew mounting (-SM)L=325-425

L=525-825

L=1025-1225

Length L ≤ 825 mm = 4 wall anchorsLength L ≥ 1025 mm = 6 wall anchors

Wall anchors

Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on-site)

Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on-site)

Intermediate rail

Intermediate rail

Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on-site)

Ventilation grille LK

01/12 - 5

Construction subject to change. No return possible!

05.10.2018Version:

Technical dataPressure loss and noise levelFront side velocitySupply air

Return air

Ventilation grille LK

01/12 - 6

Construction subject to change. No return possible!

05.10.2018Version:

Supply air Return air

Supply and return airFace area (m2)

Correction factorSupply air

Return air

H L325 425 525 625 825 1025 1225

75 0,019 0,025 0,03 0,036 0,047 0,058 0,069125 0,032 0,042 0,053 0,063 0,084 0,105 0,126225 0,062 0,082 0,103 0,123 0,164 0,205 0,246325 0,092 0,122 0,153 0,183 0,244 0,305 0,366

Astirn (m2)

Astirn (m2) 0,012 0,025 0,05 0,1 0,16 0,2 0,4 KF (-) -9 -6 -3 0 +2 +3 +6

Astirn (m2) 0,01 0,02 0,04 0,08 0,16 0,32 0,4 KF (-) -9 -6 -3 0 +3 +6 +7

LWA = LWA1 + KF

Ventilation grille LK

01/12 - 7

Construction subject to change. No return possible!

05.10.2018Version:

Maximum end velocity of jetSupply air without coanda effect

Supply air with coanda effect

Ventilation grille LK

01/12 - 8

Construction subject to change. No return possible!

05.10.2018Version:

Jet pathSupply air without coanda effect

Critical jet pathSupply air with coanda effect

Heating

Cooling

Jet detachment

Ventilation grille LK

01/12 - 9

Construction subject to change. No return possible!

05.10.2018Version:

Maximum penetrationIn heating mode

Ventilation grille LK

01/12 - 10

Construction subject to change. No return possible!

05.10.2018Version:

Induction and temperature ratiosSupply air without coanda effect

Supply air with coanda effect

Minimum distancesSupply air without coanda effect

Supply air with coanda effect

If the selected minimum distance "D" isless than (x ×0.2), the grille is referred toas a grille band.

Ventilation grille LK

01/12 - 11

Construction subject to change. No return possible!

05.10.2018Version:

Correction factor (for scattered air jet)

Legend

Blade position 44° 84°End velocity of jet vmax (m/s) × 0.65 vmax (m/s) × 0.5Critical throw xkr × 0.77 × 0.6TV = ΔTx / ΔT0 × 0.65 × 0.5Induction ratio i × 1.3 i × 2Jet drop - Jet rise y × 1.3 y × 2Grille distance z(m)> x × 0.20 x × 0.25

VZU (m³/h) [l/s] = Supply air volumeVAB (m³/h) [l/s] = Return air volumeVX (m³/h) [l/s] = total air jet volume at point xvmax (m/s) = Maximum end velocity of jetvK (m/s) = Duct velocityvstirn (m/s) = Intake velocity, blower stream velocity,

outflow velocity, relative to Astirn

Astirn (m²) = Face areax (m) = horizontal throwy (m) = vertical throwxkr (m) = Critical throwρ (kg/m³) = DensityΔpt (Pa) = Pressure lossLWA [dB(A)] = A-weighted sound power level

[LWA = LWA1 + KF]LWA1 [dB(A)] = A-weighted sound power level, relative to

Astirn, = 0.08 m² KF (-) = Correction factorΔTO (K) = Temperature difference between supply

air temperature and room temperature(ΔTO = tZU - tR )

ΔTOH (K) = Temperature difference between air sup-ply and room temperature in heatingmode(ΔTOH = tZUH - tRH )

ΔTX (K) = Temperature difference at point xtzu (°C) = Supply air temperaturetR (°C) = Room temperaturei (-) = Induction ratio (i = VX / VZU)TV (-) = Temperature ratio (TV = ΔTX / ΔTO )z (m) = Minimum clearance between two grilles x

(m) x 0.2RH (mm) = Room heightRB (mm) = Room widthL (mm) = LengthB (mm) = WidthH (mm) = Height

Ventilation grille LK

01/12 - 12

Construction subject to change. No return possible!

05.10.2018Version:

Order code LK

All fields must be filled when ordering

SampleLK-1-0625-125-SM-ER0

Ventilation grille type LK | horizontal, individually adjustable air deflection blades on the front side | grille length 625 mm | grille height 125 mm | with screw mounting | without installation frame

ORDER DETAILS01 - Type

02 – Blades

03 - Length

Specification textsSupply and return air grille type LK-1 made of plastic (HostalitZ), colour grey. With individually adjustable, horizontal air de-flection blades on the front side and visible screw mounting (-SM).Product: SCHAKO type LK-1

Accessories:

04 - Height

05 - Mounting

06 - Installation frame

01 02 03 04 05 06

Type Blades Length Height Mounting Installation frameExample

LK -1 -0625 -125 -SM -ER0

LK = Ventilation grille type LK

1 = horizontal, individually adjustable air deflection blades on the front side

2 = same as LK-1, additionally with vertical, individually adjustable air deflection blades

3 = same as LK-1, additionally with vertical, individually adjustable ladle blades

0325 = Grille length 325 mm0425 = Grille length 425 mm0525 = Grille length 525 mm0625 = Grille length 625 mm0825 = Grille length 825 mm1025 = Grille length 1025 mm1225 = Grille length 1225 mm

- Type LK-2, additionally with vertical, individually adjustable air deflection blades. Product: SCHAKO type LK-2

- Type LK-3, additionally with vertical, individually adjustable plastic ladle blades. Product: SCHAKO type LK-3

- Mounting frame (-ER1), comprising electrolytically galva-nised sheet steel.

- Installation frame with wall anchors (-ER2) made of electro-lytically galvanised sheet steel

075 = Grille height 75 mm125 = Grille height 125 mm225 = Grille height 225 mm

SM = with screw mounting (standard, concealed mounting not possible)

ER0 = without installation frameER1 = with installation frameER2 = With mounting frame with wall anchors