Insulation Of The Pump In Heating Systems - Wilo Stratos PARA Série Notice De Montage Et De Mise En Service

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• When the pump needs to be transported, it may be carried only by the motor/
pump housing.
Never by the control module or pre-assembled cable!
• Installation within a building:
Install the pump in a dry, well-ventilated room. Ambient temperatures below -20 °C are
not permitted.
• Installation outside a building (outdoor installation):
• Install the pump in a chamber (e.g. light well, ring chamber) with a cover or in a cabinet/
housing as weather protection.
• To ensure the waste heat is dissipated properly the motor and the electronics must be
ventilated at all times.
• Avoid exposure of the pump to direct sunlight.
• The Stratos PARA/-Z 1-8, 1-11, 1-12 pump requires protection to ensure the conden-
sate drain grooves remain free from dirt (Fig. 3).
• Protect the pump against rain.
• The minimum ambient temperature should not fall below the freezing point of the fluid
nor should it be lower than -20 °C.
• The fluid and ambient temperature should not exceed or fall below the permissible
values (see chapter 5.2).
• Carry out all welding and soldering work prior to the installation of the pump.
CAUTION! Risk of material damage!
Contamination from the pipe system can destroy the pump during operation. Before
installing the pump, flush the pipe system.
• It is recommended to install shut-off devices in front of and behind the pump.
• When installing in the feed of open systems, the safety supply must branch off upstream of
the pump (DIN EN 12828).
• 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 the pump is installed in a permissible installation position and with the cor-
rect flow direction (compare with Fig. 2a/2b). The flow direction symbol on the pump
housing indicates the direction of flow.

7.1.1 Insulation of the pump in heating systems

Thermal insulation shells (optional accessories) are only permissible in heating applica-
tions with fluid temperatures starting from +20 °C, since these thermal insulation shells
are not diffusion-proof when enclosing the pump housing. Install a thermal insulation
shell before commissioning the pump:
• fit the two half-shells of the thermal insulation and push them together so that the
guide pins engage in the opposing drilled holes.
WARNING! Risk of burns!
Depending on the pump or system operating conditions (fluid temperature), the entire
pump can get very hot.
When retrofitting the insulation during normal operation there is a risk of burns.
38 WILO SE 12/2017