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li ndab | ceiling diff users - v isible
Visible diffuser
LCF
Dimensions
H
Ød1
A
1
2
ØA
3
B
4
5
Description
LCF is a diffuser with circular unperforated face plate for
free hanging installations.
LCF is suitable for horizontal supply of cooled air and handles high airflows as well as low airflows with high undertemperature without the risk of drafts.
LCF includes a unique linear cone damper which makes it
possible to regulate in the full airflow range (0-100%) and
allows to balance with a high pressure drop over the unit
with low sound level (up to 200 Pa).
6
Ød1
mm
ØA
mm
A
mm
H
mm
B
mm
Weight
kg
125
460
80
241
250
7,00
160
540
97
275
300
10,0
7
8
Construction
9
Furthermore the construction of the damper gives an accurate and reliable measurement.
LCF has a readable K-value scale and has the possibility to
be preadjusted before the final balancing.
10
• Suitable in full airflow range with high under
temperature
• Unique linear cone damper
• Up to 200 Pa with low sound level
• Accurate and reliable measurement of flow
11
12
Maintenance
The face plate can be detached and the damper removed to
enable cleaning of the internal parts or the duct. The visible
parts of the diffuser can be wiped with a damp cloth.
13
14
15
Materials and finish
Material:
Standard finish:
Standard colour:
Order code
Product
Type
Size
Functional use
LCF
bbb
S
Galvanised steel
Powder-coated
White, RAL 9010, gloss 30 or
white 9003, gloss 30.
The diffuser is available in other colours. Please contact
Lindab’s sales department for further information.
We reserve the right to make changes without prior notice
2015-04-10
16
17
18
1
lindab | ceil ing di ffusers - vi sible
Visible diffuser
LCF
Technical data
1
2
3
4
Capacity
Volume flow qv [l/s] and [m3/h], total pressure Δpt [Pa], throw
l0.2 [m] and sound power level LWA [dB(A)] can be seen in
the diagrams.
Frequency-related sound effect level
The sound effect level in the frequency band is defined as
LWA + Kok Kok values are given in charts beneath the diagrams on the following pages
6
7
The throw is specified at a terminal velocity of 0.2 m/s.
l0.2 [m]
10
LCF
125 160
7
6
5
4
3
Quick selection
5
Throw l0.2
2
Supply air
l0.2 [m]
Δpt ≥ 50 Pa
Δpt ≥ 50 Pa
30 dB(A)
35 dB(A)
duct
1
15
Ød1
l/s
m3/h
l/s
m3/h
125
55
198
71
256
160
76
274
99
356
20
60
30
80
100
40
50
150
60
200
80
100
300
150
500
200
700
300
1000
qV [l/s]
qV [m3/h]
Sound attenuation
Sound attenuation of the diffusers ΔL from duct to room,
including end reflection, see table below
8
Centre frequency Hz
9
10
Size
63
125
250
500
1K
2K
4K
125
16
9
12
8
10
11
16
21
160
13
9
11
6
9
8
15
20
Balancing
Balancing data is contained in a separate brochure.
11
12
13
14
15
16
17
18
2
We reserve the right to make changes without prior notice
2015-04-10
8K
li ndab | ceiling diff users - v isible
Visible diffuser
LCF
Technical data
1
Δpt [Pa]
LCF-125
250
200
2
50
150
45
100
40
3
70
35
50
30
30
25
20
4
20
15
LWA dB(A)
10
5
q [l/s]
10
15
20
30
40
50
60 70
100
150
V
q [m3/h]
40
50
60 70
100
150
200
300
400
500
Hz
63
125
250
500
1K
2K
4K
8K
Kok
7
7
-3
-6
-4
-8
-15
-17
V
6
7
Δpt [Pa]
LCF-160
250
200
150
8
50
100
45
40
70
9
35
50
30
30
25
20
10
20
15
LWA dB(A)
10
10
15
40
50
20
30
100
40
50
150
60
200
80
100
300
150
400 500
200
60
80
700
Hz
63
125
250
500
1K
2K
4K
8K
Kok
10
9
-3
-6
-4
-10
-16
-14
qV [l/s]
qV [m3/h]
11
12
13
14
15
16
17
18
We reserve the right to make changes without prior notice
2015-04-10
3