Scope Of Delivery; Description And Function; Description Of The Pump - Wilo Stratos ECO Notice De Montage Et De Mise En Service

4.2 Fluids:
• Heating water according to VDI 2035,
• Water and water/glycol mixtures in mixing ratio up to 1:1.
If glycol is added, the delivery data of the pump must be
corrected according to the higher viscosity, depending on the
percentage mixing ratio.
• Wilo's approval must be obtained for use of other media.

4.3 Scope of delivery

• Circulation pump, complete
• Installation and operating instructions

5 Description and function

5.1 Description of the pump

Pump (Fig. 1)
The circulation pump is equipped with a wet-running motor.
The Stratos ECO-Z (-BMS) circulation pump is specially
designed for the operating conditions in drinking water/
process water circulation system. Because of the choice of
materials and design, it is corrosion-resistant to all the
constituents in the drinking water.
The pump housing is clad with an insulating shell (not ST) for
heat insulation.
An electronic control module (item 1) is located on the motor
housing, which controls the differential pressure of the pump
to an adjustable value between 1 and 3 m or 1 and 5 m.
Therefore, the pump adapts continuously to a changing out-
put demand of the installation, as occurs with the use of
thermostatic valves in particular.
The Stratos ECO-L 25/1-5 pump is a ventilation pump. It is
equipped with a ventilation housing, on which a commercially
available rapid ventilation valve can be mounted. After undo-
Installation and operating instructions Wilo-Stratos ECO
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