Hamworthy Trigon ST1 Installation, Commissioning, Operation & Service Instructions page 18

4 Commissioning [installer]
Consider the pressure relief valve (6 bars)!
0DNO0201
3. To vent the pump stroke, slowly open the
return ball valve [1.2] (0°, see page 12).
4. Close the drain valve [3.2] with the filling
pump running and increase the system
pressure to max. 5 bars. The system
pressure can be read on the pressure
gauge. Close the fill valve [1.4] and switch
off the pump of the flush and fill station.
5. Check the pressure gauge to see whether
the system pressure reduces and eliminate
leaks where necessary.
6. Reduce the pressure at the drain
valve [3.2] to the operating pressure.
7. Connect the expansion vessel to the solar
circuit and set the operating pressure of the
solar system by means of the flush and fill
station (for the required operating pressure,
see instructions of the expansion vessel).
8. Close the fill and drain valves [1.4|3.2].
9. Turn the check valve in the return ball
valve [1.2] to operating position
(0°, see page 12).
Installation-Operation ST1 Solar Pump Station 15