Variant menu: System Definition > Solar Loop with Air Collectors > Air Ducts

11. Go to the System Definition > Solar Loop with Air Collectors > Air Ducts dialog.
12. In the Main Air Ducts and Insulation sections, enter the Diameter, Length as well as the Thickness and Insulation Thermal Conductivity Coefficient of the inlet and outlet air ducts. In detail:

• External wall -> Collector = Air duct from the external wall to the collector input
• Collector -> External wall = Air duct from collector output to external wall
• Air intake through building = Fresh air duct passing through the building to the collector. A rare but efficient setup.

13. In the Main Air Ducts for DHW Connection and Insulation for DHW Connection sections, enter the Diameter, Length as well as the Thickness and Insulation Thermal Conductivity Coefficient of the inlet and outlet air ducts for DHW heating. In detail:

• External wall -> HX = Air duct from the building external wall to HX
• HX -> Collector = Air duct from HX output to the building external wall

(HX: Heat exchanger)