Connect - Wilo Yonos MAXO Installation And Operating Instructions Manual

Connect

EN
Screw diameter
Strength class
Tightening torque
Screw length
Never interconnect 2 combination flanges.
5.6 Insulate
Only utilise thermal insulation shell in heating applica-
tions with fluid temperature > 20 °C.
During cold and air-conditioning applications use
standard, diffusion-proof insulation materials. Empty
condensation drain
5.7 Following installation
◾ Check impermeability of the pipe/flange connection.
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.
20
DN 65 DN 80 DN 100
M16
≥ 4.6
95 Nm
≥ 65 mm ≥ 70 mm
➜ Fig. .
11
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.
Fig. .
15