Expansion vessel: no, Automatic venting: no, Fill and drain tap: yes, Pressure gauge: yes, Check valve: no, Safety valve: no, Thermometer: no, Circulation pump: no, Compact collector VWZ KK 8 - heat source for brine/water heat pumps - ground collector system with little space requirement and simple and quick installation - can be combined with the heat pump types VWF 57/4, VWF 58/5 - not suitable for: high/dry heating screed Compact collector VWZ KK 8 - heat source for brine/water heat pumps - ground collector system with little space requirement and simple and quick installation - can be combined with the heat pump types VWF 57/4, VWF 58/5 - not suitable for: high/dry heating screed
