What are these two controllers for?

Hello, can someone please tell me what the yellow-marked controls in the photo mean and explain their function? My heating system is a Buderus Logamax Komakt WS170 with control unit RC310. I have the following setting for my underfloor heating: temperature for heating 20°C, setback +5°C. The max flow temperature is set to 35°C and the return temperature to 30°C. The heating program is from Monday to Sunday from 6:00 to 18:00 with setback. Boiler data: pump overrun time 2 minutes, control type: room temperature controlled, setback type: reduced, frost protection: outside temperature. In the photo, marked in yellow, there is a Danfoss valve set to position 3 and at Zul R in connection with a pipe on the left which I cannot decipher, labeled Zul V V or similar. My question is, is this setting okay or should the valve be opened further, e.g., to position 8? The contact thermostat from Oreg is set to 40°C; is this setting okay or should it be turned to 60°C? I would be very grateful to receive an explanation.

Okay.. The Danfoss valve is a thermal bypass. The orange guy 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 that? Was it previously set to 8??? The little orange guy monitors my supply temperature 35°C. Is the setting on the Oreg at 40°C okay, or does it need to be set to 50°C or 60°C?

Oh man.

"Thermal bypass for installation in the top device of the respective riser to ensure the supply lines remain warm for summer operation. Also recommended for pipe lengths of 3 m or more between the apartment station and supply riser.
Temperature: adjustable, 10 - 80 °C"

I don't know how anyone can be so clumsy. One minute on the search engine of your choice.

Thank you for your prompt response. Can the Danfoss valve (thermal bypass) remain in position 3 like this? I’m just asking because I want to save heating energy. The little orange guy therefore monitors my flow temperature set to 35°C; is this setting okay on the

Thermischer

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

The answer to your question is: Yes!