SR882 operation manual
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flushing and filling unit.
Close the ball valve (2) in the centre of the flushing and filling unit.
Open the filling ball valve (1) and drain ball valve (3).
Flush the solar thermal system using the flushing and filling station for at least
15minutes to remove all air from the system.
During the flushing, bleed the solar thermal system several times at the airstopp until
the discharged solar fluid is free of air bubbles.
Close the drain ball valve(3) of flushing and filling unit, and continues run the pump and
increase the system pressure to approx.5 bar, system pressure can be read from the
manometer.
Close the filling ball valve (1) of the flushing and filling unit, and then close the filling
pump.
Check the manometer to see whether the system pressure reduces and eliminate leaks
where necessary.
Reconnect the expansion vessel to the solar thermal system.
3.2 Flow check
The flow counter is used for measurement and display of flow rate 1-20L/M, in order to
guarantee the flawless function of the measuring device the system must be flushed and
free from foreign substances.
3.3 Airstopp
After pump station is filled and commissioning, airstopp will automatically release air for
system, and it is possible to release air manually.
Factory default status of Airstopp is releasing air automatically.
Flow rate adjust
Scale of flow rate
Mechanical flow rate
counter 2-8L/min
Digital flow rate counter
0.1 -20L/min
