Wilo -Stratos MAXO Notice De Montage Et De Mise En Service page 47

NOTICE
Nationally applicable guidelines, standards and regu-
lations as well as the requirements of local energy
supply companies must be observed!
CAUTION
Material damage caused by improper electrical connec-
tion!
Wrong connection of the pump leads to damage to the electron-
ics.
Applying incorrect voltage to SELV lines will result in incorrect
voltage in all pumps and on-site building automation devices,
which are connected to the SELV line, and can damage them!
▪ Observe the current type and voltage on the rating plate.
▪ Minimum back-up fuse: 16 A, slow-blow or circuit breaker with
C characteristic.
▪ In the case of twin-head pumps, individually connect and secure
both motors.
▪ Connect to 230 V low-voltage networks. When connecting to IT
networks (Isolé Terre electrical system), always make sure that the
voltage between the live wires (L1-L2, L2-L3, L3-L1 ➜ Fig. 14C)
does not exceed 230 V. In case of error (ground fault), the voltage
between the live wire and PE must not exceed 230 V.
▪ When switching the pump on or off using an external control
device, deactivate any mains voltage pulse (e.g. burst-fired con-
trol)!
Installation and operating instructions Wilo-Stratos MAXO/-D/-Z
All manuals and user guides at all-guides.com
▪ Switching the pump via triacs/solid-state relays must be examined
▪ Make sure that the SELV lines have a maximum voltage of 24 V!
▪ During deactivation with on-site power relay: rated current ≥ 10 A,
▪ Irrespective of the rated current of the pump, inrush peak currents
▪ Observe the switching frequency:
▪ It is advisable to protect the pump with a residual-current device
▪ Consider the leakage current per pump I
▪ The electrical connection must be made via a fixed connecting
▪ To protect against leakage and for strain relief to the threaded
▪ Use a heat-resistant connecting cable where fluid temperatures
▪ Lay the connecting cable in such a way that it does not make con-
on a case-by-case basis.
rated voltage 250 V AC
of up 10 A may occur when the power supply is activated!
– Switch-on/off procedures via mains voltage ≤ 100/24 h
– Switch-on/off procedures via Ext. Off, 0 – 10 V, or via bus com-
munication ≤ 20/h (≤ 480/24 h)
(type A or B in accordance with EN 60335).
cable equipped with a connector device or an all-pole switch with a
contact opening width of at least 3 mm (VDE 0700/Part 1).
cable connection use a connection pipe with sufficient outer dia-
meter ➜ Fig. 16. The cables near the screwed connection are to be
bent to form a drainage loop, to drain any accumulated drips.
exceed 90 °C.
tact with the pipes or the pump.
Cable requirements
Terminals are intended for rigid and flexible conductors without
ferrules.
en
≤ 3.5 mA.
eff
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