Corrigo ventilation 3.4 manu

Manual Corrigo Ventilation, revision R Chapter 5 Functional description 39
In- and outputs
AI
Outdoor temperature sensor or Intake temperature
AI
Room sensor or Extract air sensor
DO
Free cooling operation
5.1.7 Cooling recovery
If the cooling recovery has been configured, there is a cooling requirement and the extract air
temperature is a settable amount lower than the outdoor temperature, cooling recovery can be
activated. When cooling recovery is activated the heat exchanger signal will be reversed to give
increasing recovery on increasing cooling demand. The function also activates the heating function
“Free heating”: if heating is required and the outdoor temperature is higher than the extract air
temperature, outdoor air will primarily be used.
Output signals
Controller signal
0%
100%
Exchanger
Cooling
In- and outputs
AI
Outdoor temperature sensor
AI
Extract air sensor
5.1.8 Enthalpy control
Calculating the enthalpy means to calculate the energy content of the air, taking into consideration
both the temperature and the air humidity. The value is given in energy per kilogram air (kJ/kg). If
enthalpy control is configured, the enthalpy is calculated both indoors and outdoors. If the enthalpy
is higher outdoors than indoors, the recirculation damper will be overridden to increase the
recirculation. The function is not active when using free cooling, in this case outdoor air is used for
cooling the room instead. For the enthalpy calculation to be made, four sensors are required:
In- and outputs
AI
Outdoor temperature sensor
AI
Outdoor humidity sensor
AI
Room/Extract air temperature sensor
AI
Room humidity sensor