Below we have answered frequently asked questions from our customers. If you do not find your answers here please contact your closest wholesaler or ESBE Sales company in your country.

Is the VZC/VZD approved for Solarsystems?

As long as for example the water temperature, system pressure, pressure drop are within the products specifications the product will work in a solar system. To avoid over temperature we recommend to install the VZC/VZD on the low temperature side of the solar system.

Can the actuator be changed on VZC/VZD diverting valves?

Yes the actuator can be changed, there are spareparts available. Please see the spare parts documentation available in the folder "Download area" on the product page.

Is the VZC/VZD closing by spring return?

No, it works by a 2-Point SPST (Single Pole Single Throw) signal.