9
Adjust the air flow rates at the remote control in line
with engineering parameters and demand. For this,
note the following:
■
Select the design air flow rate from the engineering
parameters for ventilation stage 2 (
,
"Air Airflow
2"
, standard ventilation).
■
Set air flow rates for ventilation stages 1 to 3 in
ascending order, i.e. lower for ventilation stage 1
than for ventilation stage 2, etc.
Note
If non-incremental settings are chosen for the air flow
rates, settings may be corrected automatically at the
end of the complete setting process.
■
We recommend setting the air flow rates so that suc-
cessive ventilation stages are at least 10 m
3
/h apart.
"Vitovent 300-W" operating instructions
Notes
■
The actual air flow rates that the mechanical ventila-
tion system can achieve are dependent on the pres-
sure drop resulting from the ductwork and the filters
(filter class).
■
The speed of both fans is automatically adapted to
maintain the selected air flow rate irrespective of the
level of filter contamination.
■
In order to balance out pressure differences between
the supply air and extract air side the air flow rate
can be adjusted for one side relative to the other
(see page 25).
Metal ductwork (flat): presetting the supply/extract air vents
You will need the following engineering details:
■
Pressure drop for the individual sections
■
Air flow rates for the individual sections
Using these details, the required aperture width for the
supply air and extract air vents can be obtained from
the relevant diagrams.
Metal supply air valve for ceiling installation (DN 100, DN 125)
Note
■
By removing deflector
B
the air discharge angle can
be increased from 180° to 360° (e.g. when installing
the valve in the centre of a room).
■
By repositioning deflector
B
the direction of the sup-
ply air can be adjusted, e.g. for installation near a
wall.
a
b
c
B
A
Fig. 1
A
Width of annular gap
B
Deflector
Commissioning, inspection, maintenance
Setting the air flow rates
(cont.)
5793 605 GB
