1-heating circuit and domestic water control. To control underfloor or radiator heating (heating schedule with external sensor + maintaining the temperature of the water returning to the boiler). Internet readiness
2-heating circuit and 1-DHW control. To regulate underfloor and radiator heating (heating schedule with external sensor + maintaining the temperature of the water returning to the boiler). Internet ready
3-heating circuit and 1-DHW control. To regulate underfloor and radiator heating (heating schedule with external sensor + maintaining the temperature of the water returning to the boiler). Internet readiness.
Switches the storage tank charge pump on when the upper setpoint temperature of the tank has dropped and the pump off when the lower setpoint temperature has risen (tank heated up).