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Installation - Wilo Yonos MAXO Einbau- Und Betriebsanleitung

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6.5

Installation

Perform assembly so that the pump shaft is horizontal and voltage-free!
Make sure that the pump is installed in a permissible installation position and with the correct flow direction:
Follow the direction of flow symbol on the pump housing! (Fig. II)
Installation of pump only in permissible installation position! (See chapter "Permissible installation posi-
tions")
6.5.1
Install threaded pipe union pump
WARNING
Risk of burns from hot surfaces!
The piping can get hot and cause burns when touched.
• Allow the heating system to cool down before commencing any work.
• Wear protective gloves.
Installation steps
1.
Install suitable threaded pipe unions.
2.
Close the shut-off valves in front of and behind the pump (Fig. III).
3.
Insert the pump into the pipe together with the supplied flat gaskets.
4.
Screw together the pump with the union nuts. In doing so, hold it exclusively against the flat faces on the
pump housing (Fig. IV).
5.
Open the shut-off valves in front of and behind the pump (Fig. V).
6.
Check impermeability.
6.5.2
Flange-end pump installation
WARNING
Risk of burns from hot surfaces!
The piping can get hot and cause burns when touched.
• Allow the heating system to cool down before commencing any work.
• Wear protective gloves.
WARNING
Risk of injury and scalding due to improper installation!
The flange connection can be damaged and develop leaks if the pump is not installed cor-
rectly. Risk of scalding due to escaping hot fluid!
Never interconnect two combination flanges!
Pumps with combination flanges are not permitted for operating pressures PN 16!
The use of securing elements (e.g. spring lock washers) can result in leakages at the flange connection. They
are therefore not permissible. Use the washers supplied (scope of delivery) between screw heads/nut heads
and the combination flange!
Installation and operating instructions • Wilo-Yonos MAXO/-D/-Z • Ed.01/2022-08
en
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Yonos maxo-dYonos maxo-z

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