Connect
en
Installation and operating instructions Wilo-Yonos MAXO-Z
11
5.7.3
Insulating
Drinking water applications with fluid temperature
> 20 °C
Fig. 13:
Insulate, free up condensation drain
1.
Mount thermal insulation shell (accessories) onto pump
housing.
Cold water applications
1.
Use standard, diffusion-proof insulation materials. Empty
condensation drain.
6
Connect
6.1
Personnel requisition
▪ Electrical work must be carried out by an authorised
electrician (in accordance with EN 50110-1).
6.2
Requirements
CAUTION
Incorrect connection
Wrong connection of the pump leads to damage to
the electronics.
▪ Observe voltage rating on the rating plate.
▪ Maximum back-up fuse: 10 A, slow-blow 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
eff
≤ 3.5 mA
▪ 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.
▪ 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
