Start Up; Setting The Pump Power - Wilo Stratos Notice De Montage Et De Mise En Service

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8 Start up

8.1 System filling - Venting
• Proper fill and pressurize the system with liquid.
CAUTION! Possible damage of the pump
Never operate the pump dry.
The system must be filled before starting the pump. Ensure that all isolation
valves are open.
• The pump is normally vented automatically after a short operational period.
WARNING! Risk of burning
Depending on the operating condition of the pump and/or installation (fluid
temperature) the entire pump can become very hot.
Avoid touching the pump owing to the risk of burning.
The temperature at the heat sink can be up to 158°F (+70°C) within the
permissible operating conditions.

8.2 Setting the pump power

The unit is set to a specific operating point (point of maximum load, calculated
maximum heating requirements). When starting up for the first time, the pump
capacity (delivery head) is to be set in accordance with the system operating
point. The factory presetting does not correspond to the pumping capacity
required for the system. It is calculated on the basis of the performance curve of
the selected pump (from the catalogue/data sheet). See also figs. 6 to 8.
28 Subject to technical alterations! WILO AG 05/2007