The Flamco Xstream Vent-Clean is an effective combination of both air and dirt separator. From an installation perspective, it is always preferable to install a separate air and dirt separator. In installations where it is difficult to install both a Flamco XStream Vent and Clean, the Flamco XStream Vent-Clean is the ideal solution. The Flamco Xstream Vent-Clean haxs a unique ECO/ MAX mode. In the ECO mode a part of the system water (partial flow) is led through the Flamco XStream. In the MAX mode all the system water is led through the Flamco XStream. Up to 15% less energy consumption of the heating system.* Up to 6% more efficiency of the heating system.* The unit is 360 degree rotatable for ease of installation. No account needs to be taken of the flow direction of the installation. This prevents installation errors. Insulation is an integral part of the design of the Flamco XStream. This reduces heat losses to a minimum. The intergrated service indicator indicates when the system was last flushed/vented in the MAX mode.