... tank and workstation. It’s a closed loop solar system. This system is suitable for areas with questionable water quality and all ... water when it works, working pressure 0.6MP.2. Completely automatic operation, the whole system controlled by the workstation.3. Collector separated ... the days without sunshine hot water can also be used.8. Capacity:100L,150L,200L,250L,300L,400L,500L.