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Disconnect the internal EMC lter when installing the drive on an IT system (an ungrounded power
system or a high-resistance-grounded [over 30ohms] power system), otherwise the system will be
connected to ground potential through the EMC lter capacitors. This may cause danger or damage
the drive.
Disconnect the internal EMC lter when installing the drive on a corner-grounded TN system,
otherwise the drive will be damaged.
Caution
EMC
VAR
EMC
VAR
21SysAqua
12.1. SYSAQUA 45 - 55 - 65 - 75 - 90 - 105 - 125
Maximum cross-section of the power supply
cables:
² 45-55-65-75 35mm²
² 90-105-125 70mm²
copper cable only
To ensure proper contact, t the end pieces
adapted to the cross-section of the connecting
cable.
The supply cables of the units must be routed
up to the section switch through the grommets
present at the base of the electrical unit.
12.2. OPTIONS ALL SEASONS AND VARIABLE FLOW PUMP
If you have an IT (ungrounded) system or corner-grounded
TN system, disconnect the internal EMC lter by removing the
EMC screw.
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