Installation Of A Threaded Pipe Union Pump; Installation Of A Flange-End Pump - Wilo Yonos MAXO-D Installation And Operating Instructions Manual

• Protection of the pump against rain. Dripping water from above is permitted provided
that the electrical connection has been established in accordance with the installation
and operating instructions and properly sealed.
CAUTION! Risk of damage to property!
Ensure sufficient ventilation/heating if the ambient temperature exceeds/falls below
the permitted limit values.
The electronic module can switch off due to excess temperatures.
Never cover the electronic module with any objects. Maintain an adequate distance of
at least 10 cm clear around the electronic module.
• Carry out all welding and soldering work prior to the installation of the pump.
CAUTION! Risk of damage to property!
Contamination from the pipe system can destroy the pump during operation. Before
installing the pump, flush the pipe system.
• Provide check valves upstream and downstream of the pump.
• Attach piping to the floor, ceiling or wall using appropriate fittings so that the pump does
not bear the weight of the piping.
• When installing in the feed of open systems, the safety supply must branch off upstream of
the pump (DIN EN 12828).
• Install the pump at an easily accessible point so that it can be easily checked or replaced at
a later time.
• Precautions during installation:
• Perform assembly so that the pump shaft is horizontal and not under strain (see the
installation positions shown in fig. 2a/2b).
• Make sure that it the pump is installed in a permissible installation position and with the
correct flow direction (compare with fig. 2a/2b). The direction-of-flow symbol on the
pump housing (fig. 1a; item 2.1) indicates the direction of flow. If required, turn the motor
including control module, see section 9.1.
CAUTION! Risk of damage to property!
If the module is in a position that is not permitted, there is a risk of water drips enter-
ing the module. The module is not allowed to be positioned with the cable connection
pointing upwards!

7.1.1 Installation of a threaded pipe union pump

• Install appropriate threaded pipe unions before installing the pump.
• Use the supplied flat gaskets between the suction/pressure ports and threaded pipe
unions when installing the pump.
• Screw union nuts onto the threads of the suction/pressure ports and tighten them using
an open-end wrench or pipe wrench.
CAUTION! Risk of damage to property!
Do not counter the pump on the motor/module when tightening the screwed connec-
tions. Apply the wrench surfaces to the suction/pressure port instead (fig. 3a).
• Check the threaded pipe unions for leaks.

7.1.2 Installation of a flange-end pump

Installation of pumps with combination flange PN6/10 (flange-end pumps DN 32 up to
and including DN 65) and flange-end pumps DN 80/DN 100.
Installation and operating instructions Wilo-Yonos MAXO/-D
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