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4.2
Flushing and filling the solar circuit
The valves and fittings required to flush and fill the station are integrated in the transfer station.
Make sure not to wash dirt particles into the heat exchanger and the expansion tank. Therefore,
only use flush and fill stations with fine filters. The solar circuit is flushed against the flow
direction. Therefore, make sure that the pump of the solar circuit can not be switched on.
Ball valve with integrated check valve
(Normal flow direction in the figure: downwards)
0°
Check valve is operating,
flow only in flow direction.
14
45°
Check valve is not operating,
flow in both directions.
996091425-mub-en – V04
4 Commissioning [specialist]
90°
Ball valve closed,
no flow.
2016/05
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