Lumina 17
Explanation control functions
5
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Extra fans: with rising ventilation the control computer will only activate the fans when the next position has
been reached. With falling ventilation the control computer will only deactivate the fans when the lower position
has been reached.
Example: Taking ventilation positions from the combi-table
The required ventilation level on a certain day is 21%.
The control computer uses the settings at position M3:
•
Controllable fans and the extra controllable fans: 25% activated.
•
Contr./Extra fans: deactivated.
•
One Exhaust relay fan activated.
•
Air inlets: 21% open.
•
Tunnel inlets: Do not use.
Example: Settings between two positions
The required ventilation level is 28%. This percentage is between positions M3 and M4. The control
computer uses the following settings:
•
Controllable fans and the extra controllable fans: 62% activated.
•
Contr./Extra fans: deactivated.
•
One Exhaust relay fan activated.
•
Air inlets: 28% open (midway between M3 and M4).
•
Tunnel inlets: Do not use.
2.1.4
Modulating controlled controllable ventilation
Modulating control can be used to control the ventilation level in percentages of a cycle time. The control computer
activates/deactivates the fans according to a fixed pattern. This supplies fresh air in short repeated periods.
Modulating fans are shown in the combi-table by the letter M.
Example: Modulating ventilation
The required ventilation position of the fans: 21%
The control computer will control the fans on for 50% of the set cycle time. The ventilation is off for 50% of
the time.