HE – CL Series is a close loop solar water heater. This series is used where the water quality is having more impurities – like places where there is hard water. These systems provide mains pressure pre – heating via highly effective Copper Coil heat exchanger located within the tank. The way in which the mains pressure solar collector heats water is the same as the non pressure solar reflector. Rather than using the water in the tank directly as the non pressure types does, here the system uses a 45-60 CopperCoil heat exchanger inside the tank which provides more than 1.2 m2 of each transfer area. When the cold water flows through the coil it absorbs heat from the hot water inside the solar collector tank. The solar collector tank is therefore a thermal store. The heated water is then collected in a separate tank which is circulated again to complete the cycle.

The main advantage of this system is that the mains water is not introduced in to the tank so corrosion and scale build up is almost totally eliminated.

The tanks are designed for low and medium pressure applications using gravity feed tank or pressure reduction valve.