However, depending on the selected system type, not all options are available.
For example, if a system type has been selected that allows for a cooling system (Cooling system – tab has been activated), cooling/ventilation mechanism can only be set to Air conditioning.
For those systems the Cooling system tab has not been activated, you can select between Mechanical and Natural ventilation.
Select the Air supply mechanism from the drop-down list. Note: This option is only available for Cooling/Vent. mechanisms other than Natural ventilation.
Heat recovery
Indicate the type of heat recovery used in the system (if any). Is the Heat recovery seasonal efficiency is known, it can be specified here. A default value is used otherwise.