6.5 - Field-installed control wiring
IMPORTANT:
Connecting the interface circuits on-site creates certain safety risks;
any modification to the electrical box must ensure the equipment
remains compliant with local regulations. In particular, precautions
must be taken to prevent accidental electrical contact between the
circuits supplied by different sources:
-
The choice of routing and/or insulation characteristics of the
conductors ensures double electrical insulation.
-
The conductors should be fixed together inside the electrical
box to prevent contact between the end of the conductor and
a live part in case of accidental disconnection.
See the control manual and the certified electric wiring diagram
supplied with the unit for the field control wiring of the following
devices:
-
Device automatic operation control
-
Setpoint 1/Setpoint 2 switching
-
Heating/cooling selection
-
Demand limits
-
Operating fault display
-
Locking switch (safety chain)
-
Customer pump switch control (on/off)
-
Setpoint adjustable by 4-20 mA signal
-
Power limitation adjustable by 4-20 mA signal
-
Second
power limitation level
-
End of storage cycle signal
-
User fault display
-
Time schedule override
-
Partial heat recovery activation control
-
Power indication on analogue output (0-10V)
-
Unit shut down general fault reporting
-
Minor alert reporting
-
Partial heat recovery pump On/Off control
-
Free cooling drycooler management
6.6 - Electric power reserve for the user
Control circuit power reserve:
After all possible options have been connected, the CT
transformer ensures the availability of 1 A of power for the control
cabling on-site on 24 V, 50 Hz.
With the electrical plug option, this current transformer provides
a 230V, 50 Hz circuit to power laptop battery chargers only,
maximum current of 0.8 A at 230 V.
Important: Only connect class I and II equipment to this
power socket.
6.7 - Power connection/disconnect switch
The power supply for the unit is connected at a single point
upstream of the unit’s disconnect switch.
6 - ELECTRICAL CONNECTION
AQUACIAT
POWER
ILD
EN-26
