Clear separation between domestic water and storage tank water
The ROTEX Sanicube is a combination of hot water storage tank and a water heater system. The actual heat is not stored in the domestic water but in the clearly separate storage water. The domestic water content is relatively low at 19 to 80 l, depending on the storage tank type. The total storage tank capacity is 300 to 500 l, however. The heat volume which can be stored and extracted is correspondingly large.
Heat storage tank and flow heater
The storage tank water is filled once during commissioning and is only used for heat storage. It is neither replaced nor consumed. The storage tank itself consists entirely of plastic, the inner and outer wall is made of impact resistant polypropylene (PP), the space in between is insulated with heat-conserving foam. This produces excellent heat insulation values and keeps surface losses to a minimum. The heating of the storage tank water and the charging of the storage tank can be carried out in various ways:
- With heating water (oil, gas, solid fuel boiler, heat pump or utility-supplied heat) via a stainless steel heat exchanger.
- With solar energy, direct heating of the storage tank water via the ROTEX Solaris System.
- With an electric heating element (optionally 2 or 2-6 kW).
The hot water (domestic water) is heated in a pipe register heat exchanger made of stainless steel, which is immersed in the storage tank water.