Helios AIR1 XC 500 L Notice De Montage Et D'entretien page 73

Installation and Operating Instructions
Compact Ventilation Units AIR1 XC
2. Loosen the marked grommet and insert the cables (see Fig. 14).
3. Connect the controller cable to the marked terminals in the terminal box (Fig. 15) according to the wiring diagram.
4. Connect the other end of the HMI cable to the display (see wiring diagram).
AIR1 BE-ECO
2�3�3 Modbus/Bacnet
AIR1 XC units have a rs485 connection and Ethernet connection. The rs485 connection is used for the internal com-
munication of the pressure sensors. The Ethernet connection can be used for the communication with building control
systems.
– ModBus TCP
– Bacnet IP
2�3�4 Connection of optional air quality sensors
The following air quality sensors can be connected for sensor-controlled operation:
AIR1/KWL-VOC 1-10V
AIR1/KWL-CO2 0-10V
AIR1/KWL-FTF 0-10V
AIR1-CO2 K
Connection of air quality sensors:
The power supply (24 V DC) must be connected according to the wiring diagram (see wiring diagram).
The signal cables are connected according to the wiring diagram via the analogue inputs AI2, AI3 and AI4.
Connection information:
• If a room temperature sensor is connected to analogue input AI2, only analogue inputs AI3 and AI4 are available for
air quality sensors.
• Up to 3 different or same types of sensors can be connected to a ventilation unit with 3 free analogue inputs. The
highest ventilation requirement has priority.
• If more than 3 sensors are connected, the signal converter AIR1-SK with 6 analogue inputs and one analogue out-
put is available. Only the same type of sensor can be connected to a signal converter.
• If multiple sensors are connected, the current carrying capacity of the internal power supply unit must be taken into
account.
Fig� 14
Fig� 15
AIR1 BE-TOUCH
Ref. no. 20250
Ref. no. 20251
Ref. no. 20252
Ref. no. 07124
10
EN
Fig� 16