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4 Commissioning [specialist]
16
996091425-mub-en – V04
2016/05
1.
Disconnect the expansion tank from the solar
installation. This avoids that dirt particles still
present in the pipes are washed into the
expansion tank.
2.
Put the check valve out of operation by
turning the ball valve [a] into position 45°
(see page 14).
3.
The return ball valve [b] must be closed.
4.
Connect the flush and fill station:
- pressure hose to the fill valve [h]
- flush hose to the drain valve [d].
5.
Open the fill and drain valves [h|d] and put
the flush and fill station into operation.
6.
Slowly open and close the return ball valve [b]
during flushing, in order to vent the pump
section.
7.
Flush the solar circuit until the solar fluid
exits without bubbles.
8.
Close the drain valve [d] while the filling pump
is running and increase the system pressure
to about 5 bars.
The system pressure is displayed on
the pressure gauge [e].
9.
Close the fill valve [h] and switch off
the pump of the flush and fill station.
10.
Check the pressure gauge to see if the
system pressure decreases and eliminate
leaks where necessary.
Observe the pressure
(max. 6 bars)!