DBR
VARIZON® Displacement unit with adjustable spread pattern
DBR
Quick facts
►► Adjustable spread pattern and affected area
Quick guide
A I R  F L O W - S O U N D  L E V E L
►► Suitable for all types of rooms where there are
high demands on design and finish
DBR
Size
25 dB(A)
30 dB(A)
35 dB(A)
►► Measurement outlet
200
110
135
155
►► Cleanable
250
155
180
215
►► Concealed fixing
315
175
215
250
l/s
►► Available in alternative colours
1
DBR
Technical description
Design
The DBR is a rectangular, curve-shaped displacement unit
for wall installation. The body consists of two parts: the
displacement unit and the connecting part. The displacement unit consists of a rear section with a bottom
plate and an air diffusion plate which is equipped with
a number of adjustable discs. The connecting part has a
rear section with a top plate, an opening for the connecting duct and an inspection hatch. There is a perforated
front panel on the exterior of the body which is attached
to the rear section with screws. These are concealed
behind a removable aluminium profiles. The measurement
outlet is placed behind the removable aluminium profile.
Materials and surface treatment
The displacement unit is manufactured in galvanized sheet
steel and aluminium profiles. It is coated with our pure
white standard paint, RAL 9003/NCS S 0500-N. The unit is
also available in other standard colours: Dusty grey 7037,
white aluminium RAL 9006, jet black RAL 9005, grey
aluminium RAL 9007 and white RAL 9010.
Special versions
In addition to the standard sizes, these displacement units
are available in special dimensions, with reinforced front
panels, connecting ducts etc. Please contact your nearest
sales representative for further information.
Planning
It is possible to modify the affected area by adjusting the
VARIZON® discs behind the perforated front panel. This
does not affect the air flow, pressure drop or sound level.
This flexibility simplifies any future changes in the furnishing of the room etc.
Commissioning
The measurement outlet is positioned on the side of the displacement unit behind the aluminium profile. The k-factor
of the unit is marked on side of the measurement outlet.
The k-factor can also be found at www.swegon.com in the
relevant k-factor guide. It is recommended that a measurement and commissioning damper is used to regulate the air
flow. It should be placed at least 3-4 duct diameters before
the inlet of the connection duct. See Figure 2.
Maintenance
The displacement unit can be cleaned when necessary
using luke warm water with added detergent. The duct
system is accessed by removing the front panel and the
inspection cover. See Figure 2.
Environment
The Declaration of construction materials is available at
www.swegon.com.
Installation
The displacement unit and connecting part are  fixed to
the wall either through the rear section or using angle
brackets. The extension plate is firstly mounted in place
over the connecting section, then the front cover is fastened over the displacement unit. See Figure 1.
2
Swegon reserves the right to alter specifications.
20140107
www.swegon.com
DBR
Figure 2. Commissioning. Maintenance.
Table 1.
Size
A
200
2350
250
2325
315
2292
DBR
Figure 1. Installation.
Swegon reserves the right to alter specifications.
20140107
www.swegon.com
3
DBR
Sizing
• Sound level dB(A) applies to rooms of 10 m2 equivalent
absorption area.
• Recommended maximum under temperature 6 K.
• For calculating the width of the affected area, air
velocities in the zone of occupation or sound levels
in rooms with other dimensions, please refer to our
calculation programme ProAir web, which is available
at www.swegon.com.
Sound data
DBR
Sound attenuation DL (dB)
Table DL
Sound power level L w (dB)
Table KOK
Size
DBR
Size
Mid-frequency (octave band) Hz
63
125
250
500
1000 2000 4000 8000
Mid-frequency (octave band) Hz
DBR
63
125
250
500
15
12
6
2
1000 2000 4000 8000
2
3
5
4
200
2
6
2
2
0
-5
-15
-21
200
250
6
3
5
3
0
-8
-19
-20
250
14
10
5
2
2
3
4
5
315
4
4
3
2
0
-6
-17
-23
315
13
9
4
1
0
1
2
2
Tol. ±
2
2
2
2
2
2
2
2
Tol. ±
2
2
2
2
2
2
2
2
4
Swegon reserves the right to alter specifications.
20140107
www.swegon.com
DBR
Engineering graphs – DBR
Air flow – Pressure drop – Sound level – Affected area
• The affected area refers to the distance to the isovel
limit of 0.2 m/s at Dt 3°. Dt in this case signifies the difference between the room air temperature measured
at 1.2 m above the floor and the supply air temperature, it is not the difference between the exhaust air
and the supply air temperatures.
• The graphs are not to be used for commissioning.
• The dB(C) value is normally 6-9 dB higher than the
dB(A) value.
• ∇ = min. airflow to obtain sufficient commissioning
pressure.
DBR 250
DBR 200
100
Figure 3. Affected area.
pt Pa
100
40 dB(A)
50
40
35
30
30
20
40 dB(A)
50
40
35
30
pt Pa
30
20
25
25
20
10
20
10
5
4
5
4
3
3
2
50
100
200
300
200
400
300
300
2
3
4
4
5
400
300
500
400 l/s 500
m3/h
1000
a0,2 m
5
1
b0,2 m
3
200
DBR
a0,2 m
2
100
1000 m3/h
500
1
2
400 l/s 500
10
2
3
4
5
b0,2 m
2
∆ t -3°
3
4
5
10
∆ t -3°
DBR 315
100
pt Pa
40 dB(A)
50
40
35
30
30
20
25
20
10
5
4
3
2
100
300
400
200
300
500
400 l/s 500
m3/h
1000
a0,2 m
1
2
3
4
5
b0,2 m
2
3
4
5
Swegon reserves the right to alter specifications.
10
∆ t -3°
20140107
www.swegon.com
5
DBR
Order key
Dimensions and weight
DBR
Size
Product
A
B
C
ØD
E
F
Weight, kg
Curve-shaped displacement unit
200
900 2500 200
199  150 1000
75,0
Version:
250
900 2500 200
249
175
1000
75,0
SIze: 200, 250, 315
315
900 2500 200
314
208 1200
75,0
DBR
e
-aaa
Specification example
SD XX
Swegons VARIZON® curve-shaped displacement unit of
type DBR, with the following functions:
•
•
•
•
•
Adjustable spread pattern and affected area
Measurement outlet
Concealed fixing
Cleanable
Powder coated in white paint, RAL 9003/NCS S 0500-N
Size:
DBRe aaa
xx items
Figure 4. DBR.
6
Swegon reserves the right to alter specifications.
20140107
www.swegon.com