SIRI
Measurement and control damper
QUICK FACTS
○○ Type-approved method of measurement
○○ Short installation length
○○ Can be cleaned
○○ Low flow-generated noise level
○○ High measurement accuracy
○○ Ductwork leakage class C, EN 1751
SIRI
Technical Description
Design
The control function itself is built into a surface-mounted
collar and offers uniform and centric throttling when the
damper blades are actuated towards the centre. The result
will be a laminar and uniform air stream pattern with a
low noise level. Thanks to its compact design, the SIRI is
simple to integrate into the ductwork. Casing leakage is
according to ductwork leakage class C (EN 1751).
Figure 1. Installation.
Materials and finish
The damper structure and the control discs are made of
galvanized sheet steel, and the other components are
made of plastic. The connection spigots are fitted with
rubber seal rings.
≥ 2D
Function
≥ 1D
The SIRI is designed for regulating the airflow in circular
ventilation ducts. The control disks form an almost ideal
measurement flange that enables simple and reliable
airflow measurement. SIRI is ideally suited for installation
in ducts that require regular cleaning, because it can be
opened completely (up to and including size 630 mm).
≥ 2D
≥ 2D
Installation
The SIRI damper should be installed at a suitable distance
from obstruction sources. The SIRI damper must not be
strained by the weight from connecting ducts. This is
especially the case if it is connected to a vertical run of
ducts. In undisturbed measurement an accuracy of ±5% is
achieved. With installation options according to figure 2, an
accuracy of ±10% is achieved.
≥ 2D
≥ 2D
Commissioning
Maximum measurement deviation is ±10%, even when
the damper i positioned near a T-piece, transition piece
or duct bend. See figure 2, regarding straight duct length
demands. The pressure differential can be read and the
airflow can be determined from K-factors (COP) or commissioning diagrams by using the fixed measuring points.
A label containing k-factor table and commissioning diagrams is attached to one of the measuring points at delivery. When commissioning, set desired throttling using a
screwdriver or ring spanner. See table Ring spanner sizes.
Figure 2. Planning.
Ring spanner sizes
Maintenance
The damper is maintenance-free. Whenever needed, clean
the damper by vacuum-cleaning with a brush nozzle.
When cleaning a duct, first note what position the damper
is set to before opening fully. Restore the setting of the
damper after cleaning.
Environment
Declaration of Construction Materials is available from
www.swegon.com.
2
Swegon reserves the right to alter specifications.
20120911
SIRI – Size
Ring spanner size
80-160
8 mm
250-315
10 mm
400-630
15 mm
800
22 mm
SIRI
Sizing
Sound data – SIRI
Table Kok
Sound Power Level
The diagrams for the various sizes show the total generated
sound power (Lwtot dB), as a function of the airflow and pressure drop across the damper. By correcting LWtot with the correction factors from Table Kok, the sound power level for each
octave band (LW = LWtot + Kok)can be obtained.
Size
Mid-frequency (Octave band) Hz
SIRI
80
63
125
250
500
1000
2000
4000
8000
-4
-5
-6
-14
-21
-27
-31
-33
100
-4
-4
-6
-14
-21
-27
-31
-33
125
-4
-4
-7
-15
-22
-27
-32
-35
160
-4
-4
-9
-16
-23
-27
-34
-36
200
-3
-5
-10
-17
-23
-28
-35
-36
250
-2
-5
-11
-17
-22
-28
-35
-35
315
-2
-6
-13
-18
-22
-28
-34
-35
400
-2
-7
-13
-19
-21
-27
-33
-34
500
-2
-7
-13
-18
-22
-27
-31
-33
630
-1
-7
-12
-16
-22
-26
-29
-32
800
-1
-7
-13
-17
-23
-27
-30
-33
Tol. ±
6
5
3
2
2
2
2
4
Engineering graphs - SIRI
Airflow - Pressure drop - Sound level
• The diagrams are not to be used for commissioning.
500
400
50
200
2
4
40
100
50
40
30
30
20
20
10
10
1
2
5
3
4
5
10
10
20
30
20
40
50
30
40
50
100
200
l/s
2
100
3
4
5
10
3
m /h
10
20
30
20
40
30
50
40
100
50
100
200
300
l/s
200
400 500 m3/h
200
300
55
200
1
45
50
40
40
2
50
45
100
3
55
100
50
5
LWtot60 dB
1
LWtot60 dB
4
ps Pa
2
3
4
5
6
ps Pa
6
SIRI 160
SIRI 125
7
4
40
30
50
40
20
30
20
10
10
5
5
45
1
45
50
40
500
400
55
50
200
40
100
LWtot60 dB
300
1
55
300
6
2
4
5
ps Pa
LWtot60 dB
500
400
3
SIRI 100
ps Pa
3
SIRI 80
5
4
3
4
5
10
20
30
40
20
50
30
100
40
50
200
100
300
400 500
200 l/s 300
3
10
m3/h
30
20120911
40
20
50
30
100
40
50
200
100
300
400 500
200
300
1000
400 500 l/s
m3/h
Swegon reserves the right to alter specifications.
3
SIRI
2
3
4
5
100
1
45
45
40
40
50
40
30
30
20
20
10
10
5
4
5
4
3
10
20
50
30
40
50
100
100
200
300
200
400 500
300
400 500
l/s
3
20
1000
2000 m3/h
1000
30
40
100
50
100
200
300
200
400 500
1000
2000
1000
l/s
2000
3000 40005000 m3/h
1
55
100
55
50
50
50
40
40
1
50
40
45
30
30
40
20
20
3
LWtot 60 dB
100
45
9
ps Pa
11
2
3
5
7
200
LWtot60 dB
2
200
9
11
ps Pa
5
SIRI 400
SIRI 315
13
40
10
10
5
4
5
4
3
3
30
40
100
50
100
200
300
200
300
400 500
400 500
1000
1000
2000
l/s
2
20
2000
3
3000 40005000 m /h
30
40
100
SIRI 500
50
100
200
300
200
400 500
300
400 500
1000
2000
1000
l/s
2000
3
3000 40005000 m /h
3
2
5
9
ps Pa
11
2
200
1
5
9
11
14
3
SIRI 630
ps Pa
14
20
200
400 500
55
50
50
50
40
300
LWtot 60 dB
200
55
100
ps Pa
7
300
LWtot60 dB
200
9
1
2
4
6
8
3
SIRI 250
ps Pa
5
SIRI 200
L Wtot 60 dB
100
LWtot60 dB
55
55
50
40
50
10
5
4
5
4
3
3
100
200
300
200
300
400 500
400 500
1000
1000
2000
2000
3000 4000l/s5000
3
2
1
5
9
11
14
ps Pa
LWtot60 dB
55
100
50
45
50
40
40
30
20
10
5
4
3
2
200
300
1000
4
400 500
2000
1000
3000 4000 5000
2000
3000 40005000
10000
20000
10000
l/s
20000
30000 40000 50000 m 3/h
Swegon reserves the right to alter specifications.
2
100
400 500
10000 m3/h
3000 40005000
SIRI 800
200
40
20
10
2
50
45
30
40
20
50
50
40
45
30
1
100
20120911
200
300
1000
400 500
2000
1000
3000 40005000
2000
3000 40005000
10000
l/s
20000 m3/h
10000
SIRI
Dimensions and weight Ordering key
Product
SIRI
Size
Dimensions (mm)
Weight (Kg)
Ød
ØD
L
A
B
80
78
145
115
30
35
0,5
100
98
165
120
30
35
0,6
125
123
188
130
40
35
0,8
160
158
230
140
40
35
1,1
SIRI
a
-aaa
Version:
Size:
80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800
Specification text
200
198
285
140
40
45
1,5
250
248
285
180
55
45
2,2
315
313
410
180
55
50
3,0
400
398
525
220
60
65
5,0
500
498
655
220
60
80
8,5
630
628
815
220
65
95
12,1
800
798
1020
280
85
107
24,5
75
Commissioning damper
Swegon's type SIRI circular measurement and commissioning damper with the following functions:
• Type-approved method of measurement
• Fixed measurement tappings
• Lockable damper knob with damper blade position
indicator
• Non-fouling design
B
Size
SIRI a -aaa
xx items
Ød
A
A
ØD
L
Figure 3. SIRI
20120911
Swegon reserves the right to alter specifications.
5