ᐅ Calculating the Pump Head for a Circulation Pump in Underfloor Heating Systems for Beginners

Hello,
I recently switched my heating system to underfloor heating. In the process, I also replaced the roughly 10-year-old Vaillant circulation pump with a Wilo Stratos Pico 1-6. The Vaillant was already too old for me.
Now I would like to know how to properly set the head pressure. Since I am not a professional, a step-by-step guide would definitely help me.

It is a two-story single-family house with about 110m² (1,184 sq ft) of living space. The heating system is located in the basement. I am aware that the Stratos Pico 1-4 would probably have been sufficient in my case. However, I got the 1-6 version a bit cheaper due to a wrong order.

Please keep in mind that I am a complete beginner when it comes to heating systems.

Thanks in advance

Hello,

Wolverine schrieb:
...I recently converted my heating system to underfloor heating. In this process, I also replaced the approximately 10-year-old Vaillant circulation pump with a Wilo Stratos Pico 1-6. The Vaillant pump was already too old for me.
Now I would like to know how to optimally set the head pressure...

Without an existing pipe network calculation and underfloor heating design, this is somewhat difficult.
Usually, the only option is trial and error with varying degrees of success, since underfloor heating is a rather slow-reacting system. Adjustments should ideally be made during the cold season. Assuming a properly designed underfloor heating system, the system temperature difference (ΔT) should be about 5 to 7°C (9 to 13°F). Adjust the pump head pressure until this range is approximately reached, then wait a long time for the effects (room temperatures) to become noticeable.
Additionally, the installation manual for the pump provides useful guidance. Only the installer or planner can provide specific advice regarding the system itself.

Best regards.