UFH pipe lay down in EPS
Pipe 16x2 some Italian. Every circuit has no more than 60m. I have 8 circuit with similar lenth (they are between 54m to 60m. I decide to be no more than 60m. It is possible to be up to 120m with less circuits. Depends of the water pump. I installed alpha 2 25-80, which is strong one. The liquid will be up to -10°C. The heat pump is Mitsubishi Ecodan. On top of the EPS and the pipes (under the laminate flooring) will have metal sheets to prevent "zebra" heating. The distance detween the pipes is 150mm (15cm).