8
RELATIVE OR ABSOLUTE TEMPERATURE SETTING
Control
Relative setting
Absolute setting
Main ventilation group
Always relative
to temperature in
the house
n.a.
Ventilation groups
Always relative
to temperature in
the house
n.a.
Heating 1..2
If the setting is between -9.9°C and
+9.9°C, the setting is relative to the
house temperature
If a value equal to or higher than
10.0ºC is set, this will be an absolute
temperature setting.
Cooling
If the setting is between -9.9°C and
+9.9°C, the setting is relative to the
house temperature.
If a value equal to or higher than
10.0ºC is set, this will be an absolute
temperature setting.
Temperature 1 and 2
You can indicate to your installer whether you want temperature control 1
and/or temperature control 2 to use relative or absolute temperature
settings.
Relative
: The temperature control works with a differential temperature compared to the preset house
temperature. The temperature control is based on the preset house temperature. E.g. if you set a
differential temperature of 5.0ºC and the preset house temperature is 20.0ºC, the temperature
control will work as follows: 20.0ºC+5.0ºC = 25.0ºC. If you now change the house temperature to
18.0ºC, the temperature control will change the temperature as follows: 18.0ºC+5.0ºC = 23.0ºC.
Absolute
: The temperature control works with absolute temperature settings. E.g. if you set the temperature
to 5.0ºC, the output control operation will also be based on 5.0ºC. The temperature control works
independently of the preset house temperature.
VENTILATION GROUPS
The number of menu options in the “Ventilation groups” menu varies, depending on the type and the number of
ventilation groups. Please note that the text displayed for the ventilation groups can differ from the text shown
in this manual (the text can be changed by the installer, except the texts for the main ventilation group).
Current ventilation capacity
The total calculated ventilation capacity and the ventilation capacity per animal are expressed here in m
3
/h.
Main ventilation
This is the group which controls the “main ventilation” in the house. Compensations can cause the calculated
value to differ from the value setting.
Temperature setting
The temperature on the basis of which the main ventilation group controls; this setting is relative to the house
temperature. The calculated temperature on the basis of which the ventilation group controls is shown behind
the temperature setting.
Bandwidth
The bandwidth determines the 'sensitivity' of the fan. A short bandwidth will cause the fan to react to a rise in
temperature very quickly. This is not good for the climate in the house, since it will result in too many
ventilation variations. That is why a bandwidth of 4 to 7 °C, depending on the outside temperature, is to be
advised (also see 'Automatic bandwidth compensation' on page 17).
Minimum and maximum ventilation
If compensation depending on the fill ratio has been installed, the minimum and/or maximum ventilation will be
adjusted to the number of animals in the house. In addition, the minimum and maximum ventilation can be
affected by the RH, CO
2
, meteo night reduction and outside temperature.
