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4.1
Flushing and filling the solar circuit
The fill and drain valves necessary to flush and fill the installation are integrated in the solar
station. Make sure not to wash dirt particles that may be present in the solar installation into the
expansion tank. Disconnect the expansion tank from the solar circuit during flushing and filling,
if necessary, and only use flush and fill stations with fine filters.
Ball valve with integrated check valve
(Normal flow direction in the figure: downwards)
0°
Check valve is operating,
flow only in flow direction.
12
45°
Check valve is not operating,
flow in both directions.
997xx3xx-mub-en – V01
4 Commissioning [specialist]
90°
Ball valve closed,
no flow.
2020/08
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