2 Product description
10
99473903xNA – V02
2011/11
2.3
Overflow valve [Specialist]
In systems with a distribution manifold the pump of the boiler charging set exerts a pressure on the entire installation.
When the overflow valve in the thermo controller is open, the pressure can be reduced via the valve. Undesired
circulation, which could lead to overcharging of the domestic water tank, can thus be prevented.
Overflow valve open
close
Overflow valve closed
open
