95
CO
2
parameter settings
Sensor with Cala KNX display
• Version: 13.03.2017 • Technical changes and errors excepted.
Ventilation control
Depending on the control mode, one and/or two setting sections for the ventilation
stages are displayed.
For two-stage ventilation, the setpoint value difference between the two stages must
be defined, i.e. the setpoint value which, when exceeded, triggers the switch to the 2nd
level.
Determine the deviation from the setpoint value at which the maximum variable value
is reached, i.e. the point at which maximum output is used.
The reset time shows how quickly the controller responds to deviations from the set-
point value. In case of a short reset time, the control responds with a fast increase of
the control variable. In case of a long reset time, the control responds somewhat less
urgently and needs longer until the necessary control variable for the setpoint value
deviation is reached.
You should set the time appropriate to the ventilation system at this point (follow the
manufacturer's instructions).
Now specify what should be sent when the control is blocked.
On release, the control variable follows the rule again.
Type of threshold value change
Absolute value • Increase/decrease
Increment in ppm
(upon increase/decrease change)
1 • 2 • 5 • ... • 20 • ... • 100 • 200
Target value difference between 1st and
2nd level in ppm
(for level 2 only)
100...2000; 400
Maximum control variable is reached
at setpoint value/actual difference of
(in ppm)
100...2000
Reset time in minutes
1...255; 30
When blocked, the control variable shall
• not send anything
• send a value
Value in %
(
if a value is sent)
0...100
Summary of Contents for Cala KNX AQS/TH
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Page 6: ...4 Clarification of signs...