Insulation Of The Pump In Heating Systems - Wilo Yonos ECO BMS Notice De Montage Et De Mise En Service

• The minimum ambient temperature should not fall below the freezing point of the fluid
nor should it be lower than -10 °C.
• The fluid and ambient temperature should not exceed or fall below the permissible val -
ues (see chapter 5.2).
CAUTION! Risk of property damage!
Provide adequate ventilation/heating in situations where the permitted ambient tem -
perature is exceeded or fallen short of.
• Carry out all welding and soldering work prior to the installation of the pump.
CAUTION! Risk of property damage!
Contamination from the pipe system can destroy the pump during operation. Before
installing the pump, flush the pipe system.
• Provide shut-off devices upstream and downstream of the pump.
• When installing in the feed of open systems, the safety supply must branch off upstream of
the pump (DIN EN 12828).
• Remove the two half shells of the thermal insulation (Fig. 1, item 8) before installing the
pump.
• 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 is possible to install the pump with the correct flow direction (cf. Fig. 2a/
2b). The flow direction symbol on the pump housing indicates the direction of flow.
• Make sure that it is possible to install the pump in the permitted installation position
(cf. Fig. 2a/2b). If required, turn the motor including control module, see Chapter 9.1.
• 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 property damage!
Do not hold the pump by the motor/control module when tightening the screwed con -
nections. Apply the wrench surfaces to the suction/pressure port instead.
• Check the threaded pipe unions for leaks.

7.1.1 Insulation of the pump in heating systems

Before commissioning, position the two half shells of the thermal insulation (Fig. 1,
item 8) and press them together.
WARNING! Risk of burns!
Depending on the pump or system operating conditions (fluid temperature), the entire
pump can become very hot.
When retrofitting the insulation during normal operation there is a risk of burns.
Installation and operating instructions Wilo-Yonos ECO BMS
English
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