4 Commissioning [specialist]
2020/09
9976x0210x-mub-en – V01
11
4.1
Preparations before flushing
The solar circuit is flushed in the direction
of flow.
1.
Disconnect the expansion tank from
the solar system. Please observe the
instructions of the expansion tank
manufacturer on this topic!
2.
Close the return ball valve [1.2] (90°,
see page 10
3.
The ball valve [3.1] at the flow meter must
be open.
4.
Connect the fill station to the solar station:
- Pressure hose to the fill valve [1.4]
- Flush hose to the drain valve [3.2].
4.2
Flushing and filling
1.
Open the fill and drain valves [1.4|3.2].
2.
Put the flush and fill station into operation
and flush the installation until the solar fluid
exits without bubbles.
3.
During flushing, vent the solar installation
several times via the vent valves possibly
present.