Ventilation grille
LK
Ferdinand Schad KG
Steigstraße 25-27
D-78600 Kolbingen
Phone +49 (0) 74 63 - 980 - 0
Fax +49 (0) 74 63 - 980 - 200
[email protected]
www.schako.de
Ventilation grille LK
Contents
Description ........................................................................................................................................ 3
Construction .............................................................................................................................................................................. 3
Model ......................................................................................................................................................................................... 3
Accessories ................................................................................................................................................................................ 3
Fastening ................................................................................................................................................................................... 3
Models and dimensions ......................................................................................................................... 3
Dimensions ................................................................................................................................................................................ 3
Dimensions of accessories ........................................................................................................................................................ 4
Fastening methods ..................................................................................................................................................................... 4
Technical data .................................................................................................................................... 5
Pressure loss and noise level ..................................................................................................................................................... 5
Maximum end velocity of jet ...................................................................................................................................................... 7
Jet path ...................................................................................................................................................................................... 8
Critical jet path ........................................................................................................................................................................... 8
Maximum penetration ................................................................................................................................................................ 9
Induction and temperature ratios ............................................................................................................................................. 10
Minimum distances ................................................................................................................................................................. 10
Correction factor (for scattered air jet) ..................................................................................................................................... 11
Legend ........................................................................................................................................... 11
Order details .................................................................................................................................... 11
Specification texts .............................................................................................................................. 11
01/12 - 2
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Description
Models and dimensions
Ventilation grille type LK 1
Supply and return air grille with front frame and continuous
foam seal. With front side individually adjustable, horizontal air
deflection blades.
Dimensions
LK 1
Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on-site)
Construction
Grille
- Plastic (Hostalit Z), colour grey
Blades
- Plastic (Hostalit Z), colour grey
Model
LK 1
LK 2
LK 3
- Horizontal air deflection blades
- Horizontal air deflection blades with vertical individually adjustable air blades
- Horizontal air deflection blades with vertical individually adjustable ladle blades
Accessories
With intermediate rail for lengths from 525 (see page 4)
All models based on the basic type LK 1
LK 2
Mounting frame (-E1)
- Electrolytically galvanized sheet steel
Fastening
Screw mounting (-SM)
- Standard, screws must be provided on-site
Concealed mounting (-VM)
- Not possible!
LK 3
Available sizes
L
L1
L2
H
H1
325
354
309
75
109
425
454
409
125
159
525
554
509
225
259
625
654
609
325
359
825
854
809
1025
1054
1009
1225
1254
1209
All lengths and heights can be combined!
01/12 - 3
Construction subject to change.
H2
60
110
210
310
H3
64
114
214
314
Version: 20.10.2010
No return possible!
Ventilation grille LK
Dimensions of accessories
Mounting frame (-E1)
Wall anchors
Length L  825 mm = 4 wall anchors
Length L  1025 mm = 6 wall anchors
Wall anchors available at an extra charge only.
Fastening methods
Screw mounting (SM)
L=325-425
Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on-site)
L=525-825
Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on-site)
Intermediate rail
L=1025-1225
Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on-site)
Intermediate rail
01/12 - 4
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Technical data
Pressure loss and noise level
Front side velocity
Supply air
Return air
01/12 - 5
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Supply air
Return air
Supply and return air
Face area (m2)
H
75
125
225
325
325
0,019
0,032
0,062
0,092
425
0,025
0,042
0,082
0,122
525
0,03
0,053
0,103
0,153
L
625
0,036
0,063
0,123
0,183
825
0,047
0,084
0,164
0,244
1025
0,058
0,105
0,205
0,305
1225
0,069
0,126
0,246
0,366
Aface (m2)
Correction factor
Supply air
Aface (m2) 0,012 0,025 0,05
KF
(-)
-9
-6
-3
0,1
0
0,16
+2
0,2
+3
0,4
+6
0,08
0
0,16
+3
0,32
+6
0,4
+7
Return air
Aface (m2)
KF
(-)
0,01
-9
0,02
-6
0,04
-3
LWA = LWA1 + KF
01/12 - 6
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Maximum end velocity of jet
Supply air without coanda effect
Supply air with coanda effect
01/12 - 7
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Jet path
Supply air without coanda effect
Heating
Cooling
Critical jet path
Jet detachment
Supply air with coanda effect
01/12 - 8
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Maximum penetration
in heating mode
01/12 - 9
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Induction and temperature ratios
Supply air without coanda effect
Supply air with coanda effect
Minimum distances
Supply air without coanda effect
Supply air with coanda effect
If the selected minimum distance "D" is
less than (x 0,2), the grille is referred to
as a continuous grille.
01/12 - 10
Construction subject to change.
Version: 20.10.2010
No return possible!
Ventilation grille LK
Correction factor (for scattered air jet)
Blade position
End velocity of jet
TV = Tx / T0
Induction ratio
Jet drop - Jet rise
Grille distance z(m)>
44°
vmax (m/s) × 0.65
× 0.65
i × 1.3
y × 1.3
x × 0.20
84°
vmax (m/s) × 0.5
× 0.5
i×2
y×2
x × 0.25
Legend
Order details
VZU
VAB
VX
vmax
vK
vface
(m³/h) [l/s]
(m³/h) [l/s]
(m³/h) [l/s]
(m/s)
(m/s)
(m/s)
=
=
=
=
=
=
Aface
x
y
xkr

pt
LWA
(m²)
(m)
(m)
(m)
(kg/m³)
(Pa)
[dB(A)]
=
=
=
=
=
=
=
LWA1 [dB(A)]
=
KF
TO
=
=
(-)
(K)
TOH (K)
=
TX
tZU
tR
i
TV
z
=
=
=
=
=
=
RH
RB
L
B
H
(K)
(°C)
(°C)
(-)
(-)
(m)
(mm)
(mm)
(mm)
(mm)
(mm)
=
=
=
=
=
Supply air volume
Return air volume
total air jet volume at point x
Maximum end velocity of jet
Duct velocity
Intake velocity, blower stream velocity,
outflow velocity, relative to Aface
Face area
Horizontal jet path
Vertical jet path
Critical jet path
Density
Pressure loss
A-weighted sound power level
(LWA = LWA1 + KF)
A-weighted sound power level, relative to
Aface, = 0.08 m²
Correction factor
Temperature difference between supply
air temperature and room temperature
(TO = tsupply- tR)
Temperature difference between supply
air temperature and room temperature in
heating mode
(TOH = tZUH - tRH)
Temperature difference at point x
Supply air temperature
Room temperature
Induction ratio (i = VX / VZU)
Temperature ratio (TV = TX / TO)
Minimum clearance between two grilles x
(m) x 0.2
Room height
Room width
Length
Width
Height
Lüftungsgitter -LK
horizontal
air deflection
blades
-1
horizontal
air deflection blades
with vertical individually
adjustable curved
blades
-3
Accessories:
Mounting frame
-E1
Order example:
LK1
Unless stated otherwise, the thick-frame model will be delivered!
Specification texts
Supply and return air grille type LK 1 made of plastic (Hostalit
Z), colour grey. With front side individually adjustable air deflection blades and visible screw mounting (SM).
Product: SCHAKO type LK 1
- Type LK 2, additionally with vertical, individually adjustable
air deflection blades.
- Type LK 3, additionally with vertical, individually adjustable
plastic ladle blades.
Accessories:
- Mounting frame (-E1), consisting of electrolytically galvanized sheet steel.
01/12 - 11
Construction subject to change.
horizontal
air deflection blades
with vertical individually
adjustable
air deflection blades
-2
Version: 20.10.2010
No return possible!