The EAHC21 is an automatic control system for up to two heat recovery units (standard).
It is designed to be used in conjunction with exodraft chimney fans and heat exchangers. The heart of the EAHC21 system is a WAGO PLC control with various digital and analogue I/O modules connected to terminal blocks for easy interface. A 7” touch screen allows for monitoring and configuration of the system.
The EAHC21 control monitors and maintains specific pressures and temperatures by controlling the speed of a chimney fan and by regulating the water temperature in the hydraulic system. It also monitors the pressure loss in the heat exchanger as well as other critical values in the heat exchanger system. The different pressures in the system are measured by XTP 150 sensors and the temperatures by PT1000 sensors. If the pressure and temperature setpoints of the system reach critical levels, a warning will be shown on the display and an alarm relay will be activated.
The touch-enabled display gives the user the option to monitor the values of both the flue and hydraulic systems. The latest warnings and trend curves are visible for both systems. With a flow meter installed, the user can continuously monitor the production (kW) of the system.
|Height x width x depth||700 x 500 x 250 mm||700 x 500 x 250 mm||700 x 500 x 250 mm|
|Weight||30 kg||30 kg||30 kg|
|Density Class/ material||IP54 / Steel||IP54 / Steel||IP54 / Steel|
|Voltage||1×230 V AC +10%, 50 Hz||1×230 V AC +10%, 50 Hz||3×400 V AC +10%, 50 Hz|
|Temperature||0 to 55°C||0 to 55°C||0 to 55°C|
|HMI||7″ Resistive Touch LCD 800×480||7″ Resistive Touch LCD 800×480||7″ Resistive Touch LCD 800×480|
|Digital 24-230 V AC/DC||2|
|XTP-sensor 0-10V Analog||4|
|Flowsensor 0-20 mA / 0.3-15 m3/h||2|
|PT100/PT1000 Ambient temperature||8|
|Digital potential-free||6 – 250V/8A||6 – 250V/8A||6 – 250V/8A|
|Digital 230V output||4 – 230V/6A total||4 – 230V/6A total||4 – 230V/6A total|
|For general purposes potential-free||2 – 250V/8A||2 – 250V/8A||2 – 250V/8A|
|Chimney fan output||2 x 70-230V / 4A||2 x 70-230V / 4A + 1 x
3x230V / 1.5kW
|2 x 3x400V / 1.5kW|
|Dimensions (w x h x d)||75 x 92 x 49 mm|
|Operating Temperature||0 to 70 °C|
|Monitoring Interval||0 to +150 Pa (0 to 250 Pa)|
|Max. distance between control unit and XTP sensor||100 m|
|Communication Possibilities||BACnet, MODBUS/IP, KNX, MODBUS, PROFIBUS|
Contact us – and together we’ll find a solution that is just right for you, whether it is a mechanical chimney draught – or industrial heat recovery.Contact us