Gira KNX Heating Actuator Basic, 6-gang

The heating actuator is used for the activation of electrothermal actuators (ETA) for heating or cooling systems. It possesses 6 electronic outputs, each of which can silently activate up to 4 (AC 230 V) or 2 (AC 24 V) actuators. Both deenergised closed and deenergised opened actuators can be connected. The heating actuator receives 1-bit command value telegrams, transmitted, for example, by KNX room temperature controllers. The actuator controls its valve outputs in switching form according to the input command value. The heating actuator allows switching activation of the circulation pump of the heating or cooling circuit via a 1-bit KNX telegram. When using pump control, the pump is only switched on by the actuator when at least one command value of the outputs exceeds a preset limiting value with hysteresis. The pump is switched off when the limiting value is reached or undershot again. This saves electrical energy, as the pump is only activated by sufficiently large, and thus effective, command values.