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T_2-2_6_EN_1(1-10)_VD
T 2.2/6/EN/1
Swirl Diffuser
Ty p e V D
adjustable, for installation heights
3.80 m
TROX GmbH
Telephone +49 / 28 45 / 2 02-0
Telefax
+49 / 28 45 / 2 02-2 65
Heinrich-Trox-Platz
e-mail trox@trox.de
D-47504 Neukirchen-Vluyn
www.troxtechnik.com
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Contents · Description
Description 2
Construction · Dimensions 3
Materials 3
Installation · Weight 4
Nomenclature 5
Te chnical Data 5
Acoustic Data 6
Quick Selection 7
Aerodynamic Data for Heating 7
Aerodynamic Data VD 425 and 600 8
Aerodynamic Data VD 775 and 1050 9
Order Details 10
Construction VD
Construction VD-S
Description
Due to changing thermal loads in a space, air entering the
space can either be cooling, isothermal or heating.
The type VD swirl diffusers can provide an optimum ventilation
of the occupied zone with excellent comfort characteristics.
This is achieved by varying the adjustable air pattern control
blades between horizontal, angled and vertical discharge as
the operation changes between cooling and heating modes.
Due to the large volume flow range, they can be used for both,
industrial and comfort conditioning applications.
These diffusers can be used in spaces with large floor to ceiling
heights (e.g. industrial workshops, airports, theatres and banks),
however, they can also be used for lower mounting heights
below ≥ 3.8 m (e.g. conference rooms).
In all cases they are particularly appropriate when the supply air
temperature differential varies between -10K to +15K.
Construction VD-K
2
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Construction · Dimensions · Materials
Construction
Depending on installation, all type VD diffusers can be supplied with
top or side entry plenum boxes. The aluminium face plate is
mounted on the plenum with visible screw fixings through the
border. The face plate with control actuator and linkage comes as
an integral assembly which is easily demountable from below.
The air control blades can be adjusted either manually by using an
electric actuator. For use in sports halls, a protection grid can be
supplied as an optional extra.
Materials
Diffuser face made of extruded aluminium sections. Standard
finish is natural anodised, E6-C-0.
Plenum box, actuator mounting and collar made of galvanised
sheet steel.
The protection grid is made of formed steel rod. Surface is
powder coated pure white (RAL 9010).
Other colours are optional for all visible surfaces.
Dimensions in mm
Size
B
ØD
G1
G2
H1
H2
J
K1
K2
M
P
425
425
248
31
46
500
500
335
449
404
833
325
600
600
313
33
48
550
550
353
624
604
1003
500
775
775
448
45
60
550
750
498
799
754
1171
675
1050
1050
498
45
60
600
800
523
1074
1054
1451
950
VD-V-… with top entry spigot
VD-H-… with side entry spigot
ØD
G2
Suspension
points
Suspension
points
P
Plenum box
Diffuser face
P
Primary air spigot
Cable clamp
(only for constructions E1 to E3)
Protection grid
Collar
* For variants with plenum box only
VD-V-K-… and VD-H-K-… with collar *
~200
B
B
VD-V-S-… and VD-H-S-… with protection grid *
K2
3
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Installation · Weight
Installation
Swirl diffusers type VD can be installed flush with ceiling as
well as freely suspended, due to their versatile characteristics.
Weight in kg
Construction
425
600
Size
775
1050
With a flush installation in open raster ceilings, the same
flow conditions result as with a freely suspended situation.
VD-0
4
7
9
17
VD-0-E1...-E3
6
9
12
23
VD-V
11
19
29
51
A continuous adjustment of the direction of air flow can be made
using an electrical actuator; see diffuser arrangement, figure 1.
VD-H
11
19
34
57
Collar -K
3
6
7
8
TROX-TDC can be used for the temperature-independent
actuation of the heating or cooling mode.
Protection grid-S
3
6
7
8
Figure 1
Figure 3
Installation of the face 300 mm below a continuous closed
ceiling is required to obtain a fully angled discharge.
Flush installation in continuous closed
ceiling provides two fixed directions of
discharge – horizontal and vertical.
Figure 2
Figure 4
Freely suspended: e.g. suited for industrial use
Freely suspended e.g. for use in comfort conditioning
with surrounding collar to provide horizontal discharge.
4
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Nomenclature · Technical Data
Nomenclature
A
L
t Z
ƒ H1
ƒ L
t L
75 mm
A
X
·
in l/s or in m 3 /h: Supply air volume per diffuser
A
in m: Spacing between two diffusers
H 1
in m: Distance between diffuser face and occupied zone
ƒ H1
in m/s: Time average air velocity between two diffusers at distance H 1 from diffuser face
L
in m: Distance from diffuser centre to wall + H 1
ƒ L
in m/s: Time average air velocity at wall
L max
in m: Max. penetration of supply air when heating
t Z
in K: Te mperature difference between supply air and room air
t L
in K: Temperature difference between core and room at distance L = A/2 + H 1 or L to the wall
A eff
in m 2 :Efective free area
p t
in Pa: Total pressure drop
L WA
in dB(A): A-weighted sound power level
L WNC
: NC rating of sound power level
L WNR
:L WNR = L WNC +1
Effective free area
A eff in m 2
Size
Horizontal
Vertical
Discharge
Discharge
425
0,0307
0,0781
600
0,0685
0,1819
775
0,1242
0,3405
1050
0,2247
0,6358
5
‡
t L
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