Insulation Of The Pump In Cooling/Air-Conditioning Systems; Electrical Connection - Wilo Yonos ECO BMS Notice De Montage Et De Mise En Service

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7.1.2 Insulation of the pump in cooling/air-conditioning systems

The thermal insulation shells (Fig. 1, item 8) included in the scope of delivery may only be
used in heating applications at fluid temperatures of +20°C or higher, since these thermal
insulation shells do not enclose the pump housing in a diffusion-proof manner.
The pumps of the Wilo-Yonos ECO BMS series are suitable for use in air-conditioning,
cooling, geothermal energy and other similar systems with fluid temperatures down to
-10°C. Condensate can form on parts that come into contact with the fluid, such as pipes
and pump housings.
• A diffusion-proof insulation must be provided on-site for application in systems such as
these.
• Condensate cannot form on the inside of Yonos ECO BMS pumps due to the special design
of the motor.
• To protect against corrosion, the pump housing is provided with a cataphoretic coating.
7.2

Electrical connection

DANGER! Risk of fatal injury!
Improper electrical connections can lead to fatal electric shocks.
• Only allow the electrical connection to be made by an electrician approved by the local
power supply company and in accordance with the local regulations in force.
• Before working on the pump, all poles of the power supply must be disconnected.
Work on the pump may only be started after 5 minutes have elapsed due to the dan -
gerous residual contact voltage.
• Check whether all connections (including potential-free contacts) are voltage-free.
• If the control module/cable is damaged, do not operate the pump.
• If setting and operating elements are improperly removed from the control module,
there is a danger of electric shock if interior electrical components are touched.
CAUTION! Risk of property damage!
An incorrect electrical connection can cause damage to property.
• If the wrong voltage is applied, the motor can be damaged!
• When conducting insulation tests with a high voltage generator, the pump must be
completely disconnected from the mains in the system's switchbox.
• The current type and voltage of the mains connection must correspond to the details on
the rating plate.
• Connect to 230 V low-voltage networks. When connecting to IT networks (Isolé Terre
electrical system), always make sure that the voltage between the live wires (L1-L2, L2-
L3, L3-L1) does not exceed 230 V. In case of error (ground fault), the voltage between the
live wire and PE must not exceed 230 V.
• The mains cable (Fig. 1, item 6) and the control cable (Fig. 1, item 7) used for the Yonos
ECO BMS pump is permanently connected to the control module.
DANGER! Danger of electric shock!
If the cable has been separated from the pump as a result of force, there is a risk of
personal injury by electric shock.
The connection cable is not removable!
CAUTION! Risk of property damage!
Modifications to the connection cable can cause damage to property.
The cable can only be connected at the factory.
Subsequent installation is not possible.
30 WILO SE 05/2021