RIS accessory - Additional storage tank resistances
The RIS accessory consists of adequately sized integrative resistances applied in the storage tank and an antifreeze resistance.
The control logic, implemented by Rhoss, involves the activation of the resistances by means of an outdoor air temperature value and according to the
hot water set-point set in two STEPS described below in the table.
resistances continue to work until the set hot water set-point is reached or if the defrost function is activated (to guarantee environmental comfort).
Note: the user is responsible for the supply to the electric resistances, by means of electrical wiring in the Electrical panel (IP55) outside the resistances.