UserManual AIAS201910

10/24 | User Manual AIAS | 201910
Installation
It is recommended to use shielded cables for communication between main controller, room units and damper
actuators. These cables must be separated from power supply cables for equipments like motors to prevent
interferences. As much distance as possible should exist between communication and power supply cables, especially
if they are installed parallel to each another. Maximum length for communication cable is 1000 meters. If necessary,
24 V power supply can be in the same cable as communication. Cable section and distances change depending on
number of room units and actuators. For 24 V AC it is recommended to use a safety transformer. For transformer size
(VA), it is necessary to add all power values from main controllers (12 VA each), damper actuators (5 VA each), room
units (2,5 VA each) and CO2 sensors (3 VA each for Systemair transmitters, other brands to be conrmed). Based
in total VA power for 24 V AC power supply, recommended cable section and maximum length can be determined
according with type of cable used. For 24 V DC it is recommended to use a rectied AC power supply with a lter
capacitor. For transformer size (W), it is necessary to add all power values from main controllers (6 W each), damper
actuators (3 W each), room units (1,5 W each) and CO2 sensors (3 W each for Systemair transmitters, other brands to
be conrmed). Based in total W power for 24 V DC power supply, recommended cable section and maximum length
can be determined according to the type of cable used.
Wiring/Connection
For a well dened, clearly arranged and easily maintainable wiring and connection of the AIAS system and
supporting components it is recommended to use standard electrical connection boxes and switchboards with
precisely described terminal bars completed by a skilled electrician.
Due to a partially free customable hardware conguration it is recommended to use Connection/Allocation sheets.
See below the previews. The original A3-format sheets can be printed from separate PDF le. They cover the basic
hardware arrangements of central control- and RIO modules, room controls. They can be manually edited, adapted
and lled with information about addressing, virtual and physical allocation of measurement and control points and
operational variables.
Important Wiring and Connection Details for Easy Setup and Operation of the System:
1. The AIAS Combox must be connected to the general earthing system of the site by the terminal 3.
2. The 24V power supply common potential (G0) connected to the AIAS Combox terminal 2 must be correctly
connected to all the system elements like room controllers and VAV dampers by G0 common potential terminals.
The power supply phase potential (G) connected to the terminal 1 on the AIAS Combox must be correctly
connected to all the system elements like room controllers, VAV dampers etc. by the G poer supply phase
terminals.
3. The Exoline communication must be connected correctly to all communicating devices: The line A to A-terminals
and the line B to B-terminals without crossing them.
4. The Modbus communication must be connected correctly to all communicating devices: The line A to A-terminals
and the line B to B-terminals and line N to N-terminals without crossing them.
5. If only one AIAS-Combox is used for the zone optimization, so there is no slave unit sending analog setpoint
values for fans to this combox, the terminals 31 and 32 must be connected to the terminal 30.
6. If no remote ON/OFF signal for AIAS-Combox is connected, then the terminals 71 and 4 shall be connected
together.