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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. 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.
			In conjunction with the unpressurised ROTEX Solaris solar system, free energy from the sun is used highly effectively:    - for water heating    - for heating support    - with low heat losses    - minimum maintenance costs    - for perfect water hygiene    - and practically limitless hot water comfort