A.O. Smith 0308801 Benutzerhandbuch Seite 20

Filling the solar circuit
0°
non return valve is operating,
flow only in flow direction.
45°
non return valve is not operating,
flow in both directions.
90°
Ball valve closed,
no flow.
20
1. Put the flush and fill station into operation.
2. Flush the solar system for at least 15
minutes.
Open the flow restrictor [6] below the pump
(vertical position) several times for some
seconds in order to eliminate also the air in
the pump section.
3. Close the drain valve [7] with the filling pump
running and increase the system pressure to
approx. 5 bars. The system pressure can be
read on the manometer.
6. Close the fill valve [5] and switch off the pump
of the flush and fill station.
7. Check the manometer to see whether the
system pressure reduces and eliminate leaks
where necessary.
8. Reduce the pressure on the drain valve [7] to
the system-specific pressure.
9. Connect the expansion tank to the solar
circuit and set the operating pressure of
the solar system by means of the flush and
fill station (see instructions regarding the
expansion tank).
10. Close the fill and drain valves [5|7] and open
the flow restrictor [6].
11. Put the check valve in the return into
operating position by turning the ball valve to
position 0º.