11
Minimum and maximum ventilation
The minimum and maximum flap opening can be set here.
Current temperature
This line shows the current average temperature on the basis of which the ventilation group is controlling.
Calculated flap opening
Control on the basis of temperature:
The flap opening requirement is calculated on the basis of the
temperature measured, the bandwidth, the minimum and maximum flap opening.
Control on the basis of ventilation:
The flap opening requirement is calculated on the basis of the current
main ventilation, the minimum and maximum flap opening.
Control on the basis of pressure difference:
If the ventilation group controls on the basis of the preset
pressure difference and pressure control has been switched on (see page 14), the control will try to keep the
pressure difference in the house as constant as possible.
Characteristics:
The pressure setting is automatically adjusted to the outside temperature.
Any temperature differences in the house are considered when determining the flap positions.
The pressure control will be instantaneously switched-off if a ventilation alarm occurs at the
main ventilation control.
If a pressure alarm occurs the pressure control will be delayed switch-off (delay time = 5x
pressure integration time).
Current flap opening
The current flap opening of the ventilation group is shown in this line.
Flap control on the basis of ventilation
Minimum flap
opening
The flap will never close further than the
"Minimum flap opening" percentage
setting.
Maximum
flap opening
The flap will never open further than the
"Maximum flap opening" percentage
setting.
Main ventilation [%]
20
40
100
80
60
0
F
la
p
o
pe
n
in
g
[%
]
Maximum
Minimum
Minimum
Maximum
Minimum at
ventilation
The flap will stay at the preset minimum if the main ventilation is less than this percentage. If
this percentage is exceeded, the flap will open further.
Maximum at
ventilation
The flap will be opened at its preset maximum if the main ventilation is more than this
percentage.
Cascade control
The total ventilation of the group is determined by
the temperature and/or pressure control. The inlet
flap positions are determined on the basis of this
value. Inlet flap 1 is driven first and inlet flap 2
remain closed. Finally both inlet flaps are driven.
Example with 2 air inlet flaps
: Inlet flap 1 is
driven open first (up to max. 100%, inlet valve 2
remains closed). If inlet flap 2 has to be added, inlet
flap 1 is driven down and both flaps are driven to the
same position.
