瑞典瑞晶室内控制器AQUA24TF.pdfVIP

AQUA24TF Temperature controller, 3-point AQUA24TF is a controller in the AQUALINE series intended for controlling HVAC systems. The controller is primarily intended for control of supply air temperature or room temperature control. * One three point floating control output, 24 V AC * Night set-back * Active frost protection and shutdown function * For wall mounting * For heating applications * Internal or external setpoint Function The AQUA24TF controls three-point (floating control) Night set-back actuators with a pulse-pause signal where the ratio Fixed 3K on potential-free closing from an external between on-time and off-time is proportional to the switch. temperature offset. Small offset will give short on-time Frost protection function pulses and longer off-time. Larger offset will give longer The frost protection sensor must be located in a suitable on-time and shorter off-time. A 20K offset will give position, either as an immersion sensor in the heater or as continuous on-time. The total pulse-period is constant 4 seconds. a strap-on sensor on the return line. If the temperature at the frost protection sensor falls below 10°C, the frost External sensor or setpoint protection controller will start forcing the water-valve open. The controller has an input for connectin