Heating/cooling system presetter

A heating/cooling system pre-setting arrangement (1) is provided, the pre-setting arrangement (1) comprising a housing (2) and presetting means (11, 12) defining a maximum flow through the valve arrangement (1) at a given pressure, wherein the presetting means comprise a presetting element (11) actuatable by means of a setting ring (6), wherein the setting ring (6) comprises a first geometry (7) and the housing (2) comprises a second geometry (8), the first geometry (7) and the second geometry (8) preventing rotation of the setting ring (6) when they are in engagement.

Actuation of such a presetting arrangement (1) should be comfortable.

To this end holding means (14, 15) are provided holding the setting ring (6) in a position in which the first geometry (7) is out of engagement of the second geometry (8).