Any Boilers out there that allow flow temperature to be altered depending upon which zone is calling for heat?

Ideally I would like ufh to run at 35

....but with current flow rate set at 75, the boiler aims for 75 and gets there way too fast! and overheats as the 35 mixing valve blocks most of the heat, the boiler does not like that as it over heats too much and so trips (lock out), so, I should have a buffer tank to absorb the high heat output, and the ufh can draw on it slowly, but, I don;t want one! no space for it)

Rads at 55

and hot water cylinder at 65 / 70

Possible?

I am thinking each zone would run at its most efficient with the temperatures set for each zones specific requirement, no?

thanks for any thoughts
🙂

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