ᐅ What are these two controls for?

Hello, could someone please explain the meaning and function of the yellow-marked valves in the photo? My heating system is a Buderus Logamax Kompakt WS170 with an RC310 control unit. I have the following settings for my underfloor heating: heating temperature 20°C (68°F), setback +5°C (9°F). The maximum flow temperature is set to 35°C (95°F) and the return temperature to 30°C (86°F). The heating schedule is Monday to Sunday from 6:00 AM to 6:00 PM with setback. Boiler data: pump overrun time 2 minutes, control type: room temperature controlled, setback type: reduced, frost protection: outdoor temperature. In the photo, a Danfoss valve is highlighted in yellow, set to position 3, and next to the supply return line, connected to a pipe on the left, which I cannot read clearly—it looks like Zul V V or similar. My question is: Is this setting correct, or should the valve be opened further, for example to position 8? The Oreg contact thermostat is set to 40°C (104°F). Is this setting okay, or should it be adjusted to 60°C (140°F)? I would really appreciate an explanation.

Okay..
The Danfoss valve is a thermal bypass.

The orange component is an over-temperature sensor that monitors the supply temperature of the underfloor heating.

Thank you for your prompt response. Can the Danfoss valve (thermal bypass) remain in position 3 like this? It was previously set to 8???

The little orange guy monitors my flow temperature of 35°C (95°F). Is the setting on the Oreg at 40°C (104°F) okay, or should it be set to 50°C (122°F) or 60°C (140°F)?

Oh man.

"Thermal bypass for installation in the topmost unit of the respective riser to ensure the warm holding of supply lines during summer operation. Also recommended for pipe lengths of 3 m (10 feet) or more between the apartment station and the supply riser.
Temperature: adjustable, 10 - 80°C (50 - 176°F)"

I don’t understand how someone can be this clumsy. One minute with your favorite search engine.

Thank you for your prompt reply. Can the Danfoss valve (thermal bypass) remain in position 3? I’m asking because I want to save heating energy. The small orange device monitors my supply temperature, set to 35°C (95°F). Is this setting okay according to the

PhiIipp schrieb:

Thermal

I have a radiator in the bathroom. The valve is set to two. Can I turn it to four?

The answer to your question is: Yes!