UNIPRODO UNI WS 5000PLUS Bedienungsanleitung Seite 31

The valve is mounted next to the unit. Connect the water supply line to connection
No. 5 and then run the line from connection No. 6 to the "IN" connection on the
unit (No. 4 in the photo above).
CAUTION! Install the gaskets on the valve.
3. Connecting drain hose [7] and overflow hose [8]:
After connecting, secure the hoses with a hose clamp.
CAUTION!
a) The drain point or any part of the hose must not be above the connection point
to the unit.