ETA Return Temperature Riser Valve/Shunt Pump

In order to prevent condensation forming in the boilers heat exchanger it is nessessary to ensure that the temperature of water returning to the boiler from the heating system is approx. 60°C.

To achieve this ETA use a return temperature riser valve with electronic valve adjustment and a suitably sized buffer shunt pump.

None of the PE or PU boilers require an external shunt pump like this, however, all boilers in the PE-K, SH and HACK range must have a return riser valve fitted