Spare part for the constant temperature control unit.
Flow rate indicator:
With the flow rate indicator, the admixture quantity of the boiler water can be set to the maximum required flow rate of 1-12 L/min.
Backflow preventer:
The "non-return valve" prevents backflow into the pump and thus ensures optimal Filling/flushing of the system even with difficult hydraulic conditions (e.g. fixed value control set and heating circuit not on the same floor). It can be mounted between a fixed value control set and the flow of the manifold (observe the direction of flow). Check page 138 to find out more.
