The power of the sun without any diversions
ROTEX Solaris is based on a storage tank concept which is fundamentally different from conventional systems. The storage tank water is supplied directly and without heat exchanger to the solar panels, heated and then stratified into the storage tank. The heat is not stored in the domestic water, as is more often than not the case, but in the separate unpressurised storage tank water. This ensures that the efficiency of the solar panels and the overall use of the system is again considerably increased. Since the system is unpressurised, components which would otherwise be required are not necessary, such as the expansion tank, pressure relief valve, pressure gauge and heat exchanger. Not only does this reduce the cost of the initial investment, it also increases operational safety.
The Solaris Just-in-Time principle
The Solaris collectors are only filled when sufficient heat is being provided by the sun and when the storage system is capable of receiving this.
In this case, both pumps in the control and pump unit (RPS 3) switch on briefly and fill the collectors with storage tank water.
After filling, which takes less than a minute, one of the pumps switches off and the water circulation is maintained by the remaining pump.