4 Commissioning [specialist]
2020/10
997655810x-mub-en – V08
15
4.3
Flushing and filling
1.
Open the fill and drain valves [7.3|9.2].
2.
Put the flush and fill station into operation and
flush the installation until clear solar fluid exits.
Vent the solar installation several times at the
vent plug of the Airstop [4.2] until the solar
fluid exits without bubbles (see page 13).
3.
Slowly open the return ball valve [7.1] to vent
the pump section (see page 12).
4.
Switch off the pump of the flush and fill station
and close the drain valve [9.2].
5.
Connect the flush hose to the drain valve of
the second storage tank circuit [3.2].
6.
Open the fill and drain valves [7.3|3.2].
7.
Put the flush and fill station into operation and
flush the installation until clear solar fluid exits.
Vent the solar installation several times at the
vent plug of the Airstop [4.2] until the solar
fluid exits without bubbles (see page 13).
8.
Slowly open the return ball valve [1.2] to vent
the pump section (see page 12).
Consider the pressure relief valve
(6 bars)!
9.
Close the drain valve [3.2] while the filling
pump is running and increase the system
pressure to about 5 bars. The system
pressure is displayed on the pressure gauge.
10.
Check the pressure gauge to see whether the
system pressure reduces and eliminate leaks
where necessary.
11.
Reduce the pressure at the drain valve [3.2] to
the operating pressure.
4.2
