Connect; Personnel Requisition; Requirements; Connection Options - Wilo Yonos MAXO Installation And Operating Instructions Manual

6

Connect

6.1

Personnel requisition

The electrical connection may only be performed by a
qualified electrician.
6.2

Requirements

ATTENTION
Wrong connection of the pump leads to damage to the
electronics.
◾ Observe voltage rating on the rating plate.
◾ Maximum back-up fuse: 10 A, inactive or circuit breaker
with C characteristic
◾ Never connect to an uninterruptible power supply or
IT-networks.
During external connection of the pump deactivate a
◾
pulse of the voltage (for example phase angle control).
◾ Switching the pump via triacs/solid-state relays must be
examined on a case-by-case basis.
◾ During deactivation with on-site power relay:
Rated current ≥ 10 A, rated voltage 250 V AC
◾ Note switching frequency:
– Switching on/off mains voltage ≤ 100/24 h
– ≤ 20/h at a switching frequency of 1 min between
switching on/off via mains voltage
◾ Secure pump with a residual-current device (type A or B).
◾ Leakage current I ≤ 3.5 mA
eff
◾ The electrical connection must be made via a fixed
connecting 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).
To protect against leakage and for strain relief to the
◾
threaded cable connection use a connection pipe with
sufficient outer diameter.
◾ Use a heat-resistant connecting cable where fluid tem-
peratures exceed 90 °C.
◾ Lay the connection pipe in such a way that it touches
neither the pipes nor the pump.
6.3

Connection options

Fig. 14: Connection options
The pump can be connected to networks with the fol-
lowing voltage ratings:
◾ 1~ 230 V
◾ 3~ 400 V with neutral conductor
◾ 3~ 400 V without neutral conductor (upstream power
transformer)
◾ 3~ 230 V
6.4

Double pumps

Only operate as main and standby pump with automatic
fault-actuated switchover:
◾ Individually connect and secure both motors.
◾ Provide separate switchgear.
◾ Make the identical settings.
6.5

Collective fault signal (SSM)

The contact of the collective fault signal (potential-free
normally closed contact) can be connected to a build-
ing automation system. Internal contact is closed in the
following cases:
◾ The pump has zero current.
◾ There is no fault.
◾ The control module has failed.
DANGER
Danger to life through voltage transmission, if mains and
SSM pipe are led together through a 5-wire cable.
◾ Do not connect SSM pipe to protective low voltage.
◾ Use 5 x 1.5 mm² cable.
Connection
◾ minimum 12 V DC, 10 mA
◾ maximum 250 V AC, 1 A
During connection of the SSM pipe to the network po-
tential:
◾ SSM phase = live wire L1
6.6 Connect
DANGER
During connection of the pump risk of death from electric
shock!
◾ Disconnect power supply before starting work.
◾ Only allow qualified electricians to carry out electrical
connection.
Fig. 15: Preparing the connection
1. Disconnect power supply.
Connect
EN
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