Explanation control functions
Time modulating ON/OFF control
This type of control can be selected if the cooling capacity is large and the cooling system is suitable for
modulating control.
Cooling is continually on, if the temperature of the cooling control is higher than Setpoint + hysteresis.
Cooling is continually off, if the temperature is equal to or lower than the Setpoint.
Cooling is modulating on, if the temperature is in the Hysteresis. The control computer calculates the modulation
time based on the Repeat time.
Example: Time modulating cooling control
Inside Hysteresis the control computer controls the cooling for a part of the Repeat time. The control
computer calculates this on/off time as follows:
Setpoint: 27.0°C
Measured house temperature: 28.5°C
Hysteresis: 3.0°C
Repeat time: 100 sec.
The cooling relay will repeatedly be on for 50 seconds and off for 50 seconds.
The humidity control can only activate if a humidity setpoint has been set. Enter to which relay the humidity
control has been assigned. Also enter the type of relay control: ON/OFF or MODULATING.
See also Settings humidity.
The control computer has two types of humidity control:
1. ON/OFF control
Humidifying activates as soon as humidity in the house drops
below Setpoint humidity – hysteresis.
Humidity deactivates when the measured house humidity is equal
to or higher than Setpoint humidity.
A Repeat time can be used to avoid unnecessary
activation/deactivation of the humidity. When the humidity
activates, it will remain on for at least the Repeat time. When the
humidity deactivates, it will remain off for a minimum of this time.
2. Time modulating ON/OFF control
The humidity is continually on, when the measured house humidity is lower than Setpoint – hysteresis.
The humidity is continually off, when the house humidity is equal to or higher than Setpoint.
Humidity is Modulating on, if the humidity is in the Hysteresis. The control computer calculates the
modulation time based on the Repeat time.
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General