Room controller R44 is a versatile room controller for the temperature of individual rooms and for control applications in variable air volume (VAV). The RS-485 connection allows you to connect the controller to all systems that support Modbus RTU protocol. The bus unit is galvanically insulated from the controller's other electronics. The controller supports 0 ... 10 V regulating actuators and / or thermal actuators and 0 ... 10 V regulated dampers. It is possible to directly control the fan convector fan speed with a 0… 10 V output if the fan convector has an EC motor. A 0… 10 V output has been reserved for variable air volume control. The temperature is detected with an internal or external NTC10 sensor (the terminals are included). The controller has operating modes for night and day. The operating modes are controlled by means of an external card switch, PIR presence detector, over Modbus and from the menu. You can temporarily activate the day mode for a specific time by pressing the "man in the house" button. The temporary time can be 1… 480 min. After the delay, the controller returns to night mode if day mode is not simultaneously activated over Modbus.
