Trox Technik Auranor DSO User manual

LØV-R
• Broad adjustment range
• Easy commissioning
GB0410
01.22
DSO
Extract air terminal device
TROX Auranor Norge AS
Auranorvegen 6
NO-2770 Jaren
Telephone [phone]
E-mail: [e-mail]
www.trox.no

2
DSO
ORDER CODE, DSO
DIMENSIONS AND WEIGHT, DSO
Dim. D A weight [kg]
100 134 74 0,3
125 160 85 0,4
160 191 89 0,5
200 241 107 0,7
Table 2
Fig. 2
QUICK SELECTION
DSO Cone position - s [m³/h]
Dim. [mm] 30 dB(A) 35 dB(A) 40 (dB)
100 [phone]
125 [phone]
160 [phone]
200 [phone]
Table 1: The table shows air ow rates at given sound power levels.
Dim. d D2Weight [kg]
100 99 125 0,10
125 124 150 0,12
160 159 185 0,18
200 199 225 0,24
Table 3
Fig. 1
DIMENSIONS AND WEIGHT, DKT
APPLICATION
DSO is an extract air terminal device for ceiling or wall mounting.
DESIGN
DSO features an adjustable centre cone for air ow rate commissioning.
Supplied with mounting frame, DKT, for circular duct.
MATERIALS AND SURFACE COATING
DSO is made of steel, and comes in a RAL 9003 - gloss 30 nish. Other
colours are available on request. DKT is tted with a rubber gasket on
the connection collar. Cone position
DSO - 160 / DKT
Product DKT = Mounting frame
Dimension Ø 100 Ø200
Example:
DSO-160 / DKT
Explanation:
DSO dimension Ø160, with DKT mounting frame.

DSO
3
ACOUSTIC DATA
The diagrams provide a summary of the A-weighted sound power level
from diuser, LWA. Correction factors in table 5 are used to calculate
emitted sound power level at the respective frequencies, LW= LWA +
KO. A room with absorption equivalent to 10m² Sabine will have a
sound pressure level which is 4dB below the sound power level emitted.
Example:
Oce premises require an indoor air extraction of 25 l/s, and for this
purpose a DSO Ø100 extract air terminal device is used.
Room attenuation is 6dB, and the centre cone is to be choked to 80 Pa
total pressure loss.
We aim to nd:
a) Emitted sound power level from the valve at 250 Hz, at chosen
working point.
b) A-weighted sound pressure level in the room with the centre cone
in +10 position.
c) A-weighted sound pressure level in the room with centre cone
choked.
Solution:
DSO Ø100, required air ow rate 25 l/s. According to diagram 1 the
emitted sound power will read LWA = 29dB(A) for position +10 mm,
with a total pressure loss of 50Pa.
a) Table 1 shows that the correction factor for open damper at
250 Hz is -2dB. LWat 250 Hz is thus:
LWA + KO =29 + (-2) = 27dB
b) A room attenuation equivalent to 6dB provides a sound pressure
level in the room of: 27 – 6 = 21dB(A)
c) With 30 Pa chocking we reach 80 Pa, and the diagram shows
an increase in LWA of 5dB.The sound pressure level is thus:
21 + 5 = 26dB(A)
CALCULATION DIAGRAMS
Diagram1, DSO Ø100 Diagram 2, DSO Ø125

DSO
Table 4
DSO KO [dB]
Dim. 63 125 250 500 1k 2k 4k 8k
100 -1 -4 -2 0 -2 -5 -9 -23
125 -2 -5 -4 -2 -5 -2 -8 -24
160 0 -2 -1 -2 -1 -8 -12 -25
200 -2 -3 -4 -4 -1 -5 -9 -26
Static sound attenuation incl. end reection for DSO
Table 5
Correction factor [KO], DSO
4
Diagram 3, DSO Ø160 Diagram 4, DSO Ø200
DSO Attenuation [dB]
Dim. 63 125 250 500 1k 2k 4k 8k
100 23 18 14 12 12 14 5 6
125 21 17 12 11 12 11 7 6
160 19 14 12 11 11 14 5 7
200 15 13 11 11 13 12 7 7

DSO
Fig. 3: Installation
COMMISSIONING
The air ow rate is adjusted by turning the centre cone. It is xed in
place by tightening the lock nut at the rear of the centre bolt. Valve
commissioning is carried out by measuring the pressure dierence at
the back of the centre cone, and calculating the air ow rate according
to correction factor for valve dimension and centre cone position. Cor-
rection factors are provided on a label attached to the valve and
can also be found in our commissioning guide available at our website:
www.trox.no.
MAINTENANCE
The valve can be cleaned by using a damp cloth.When cleaning the
duct network, the valve must be removed in order to gain access to
the ducting.
ENVIRONMENT
Enquiries regarding product declaration can be directed to our sales
team, or information can be found at www.trox.no.
INSTALLATION
Separate mounting frame (DKT) is attached to the duct by using
blind rivets or self-drilling screws. The valve is then screwed into the
mounting frame. Installation principle is shown in g. 3.
The company reserves the right to make amendments
without prior notice.
Head Oce:
TROX Auranor Norge AS, Auranorvegen 6, NO-2770 Jaren
Telephone: [phone] www.trox.no