Air supply nozzles VS4 - Smay

Air supply nozzles VS4
Description
VS4 nozzles are designed for supplying
heated or cooled air when high distribution
and low noise levels are required.
The nozzles allow the air stream to be
directed manually or mechanically within an
angle of 30° from the axis of symmetry
(manually – in any direction, by actuator –
horizontally or vertically).
Material and finish
Nozzles: aluminum profiles
Finish: anodized in the color
of aluminum
or painted
in any RAL color.
Dimensions
Order
Product code: VS4 / a / b / c
Type
Diameter ÆD
Duct connector
Control
Examples of installation:
Rectangular duct:
Circular duct:
Standard ExE ÆD c min. ÆA f
size
80 200 200 158 40
100 240 250 198 40
125 290 300 248 40
160 365 380 313 40
220 450 500 398 65
Note:
When ordering please specify ÆD c
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Air supply nozzles VS4
Standard dimensions
The following versions of VS4 air supply nozzles are available to meet the customer’s needs:
Connector type
- For rectangular duct E
- For circular duct D
Air stream control
- Manual R
- Mechanical (by actuator):
- NM24 actuator B4
- NM230 actuator B5
- NM 24-SR actuator B6
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Standard ÆD ÆB ÆC e L1 L 2 L 3 Æg n A eff [m 2 ]
size
80 80 175 196.5 7 43 96 139 6.5 3 0.004778
100 100 215 236.5 7 51 115 166 6.5 3 0.007543
125 125 265 286.5 7 52 142 194 6.5 3 0.011882
160 160 340 361.5 9 75 180 255 6.5 4 0.019607
220 220 425 446.5 9 95 219 314 6.5 4 0.037325

Air supply nozzles – technical data VS4
General
Symbols:
V L [m/s] mean airflow velocity at distance L
V t [m 3 /h] total airflow velocity
V eff [m/s] effective outflow velocity
A eff [m 2 ] effective nozzle surface area
Dp [Pa] total pressure loss
L [m] air stream range
L W [dB (A) ] sound intensity level
Chart I
Effect of velocity V eff on pressure loss Dp
Chart II
Effect of total airflow on pressure loss Dp and sound intensity levels.
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Air supply nozzles – technical data VS4
Chart III
An effect of total airflow V t and velocity V L on air stream range.
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