STIEBEL ELTRON SE FLOWSTAR PUMP STATION - Manual (Page 8)

17 West St., W. Hatfi eld, MA 01088
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Simply the Best
INSTALLATION INSTRUCTIONS
SE FLOWSTAR PUMP STATION - 221337
Ball valve with integrated check valve g 4.2 Preparation for fl ushing
1. Conduct an air pressure test of the system before
fl ushing and fi lling. This will ensure that all gaskets,
soldering joints, or threaded connections are properly
sealed. The pressure, and length of this test is at the
discretion of the installer, but it is highly recommended by
Stiebel Eltron that this step is completed.
2. Disconnect the expansion tank from the solar thermal
system. This is typically done via a ball valve piped between
the expansion tank and the pump station.
3. Ensure the check valve in the pump station is in its 0
position.
4. Connect a hose from a domestic water connection to
connection A, as shown in the image below.
5. Connect the fl ushing hose to connection B, as shown
below.
6. Ensure that the fl ushing hose is positioned to empty into
a drain or sink.
4.3 Flushing the system
1. Open the fi ll and drain valves.