STIEBEL ELTRON SE FLOWSTAR PUMP STATION - Manual (Page 9)

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INSTALLATION INSTRUCTIONS
SE FLOWSTAR PUMP STATION - 221337
2. Open the domestic water connection to allow water to
begin fl ushing through the system.
3. Leave the water running through the system and into
the drain for a full 5 minutes after the fl ushing hose has
begun purging water.
4. Close the fi ll and drain valves, as well as the domestic
water connection.
5. Use the solar controller to manually circulate the fl uid.
The process for doing this will depend on the controller you
are using. Circulate the fl uid for 30 minutes.
4.4 Filling the system
1. Stop the manual operation of the pump and turn the
pump to off on the controller.
2. Open the check valve in the pump station to its 45
position.
3. Close the ball valve in the fl ow meter.
4. Connect the charging pump hose to connection A, as
shown above.
5. Make sure the fl ushing hose is still connected to the
drain connection B.
6. Insert the fi lling hose (on the back end of the charging
pump) into the solar fl uid.
7. Start the charging pump.
8. Open the fi ll valve.
9. Open the drain valve.
10. Observe the discharge of the fl ushing hose and make
note of the color change of the fl uid to the propylene glycol
mixture.
11. Close the drain valve.
12. Insert the fl ushing hose into the same bucket of
propylene glycol mixture as the charging hose.
13. Open the ball valve that is isolating the expansion tank.
14. Open the drain valve to continue the circulation of solar
fl uid through the system. This confi guration will allow any
air in the system to be discharged via the bucket. Circulate
the fl uid in this manner for 15 minutes.
15. Close the drain valve again. The system will now begin
building pressure. Observe the pressure on the pump
station gauge until it reaches the intended cold system
pressure.
16. Close the fi ll valve and turn off the charging pump.
17. Open the ball valve in the fl ow meter.
18. Set the check valve to the 0 operating position.
19. Manually run the pump via the pump station to ensure
that the system is working propery.
20. Air may have accumulated at the solar collectors. It is
important to bleed off any air from them to ensure that they
are performing uniformly.
4.5 Setting the solar system
Observe the specifi cations of the manufacturer of the
collectors for the correct adjustment of the fl ow rate. For
Stiebel Eltron SOL 27 Premium collectors, the recommended
fl ow rate is 0.75 gpm/collector.
Part: # of Collectors in Array:
1 2 3 4
Flow Rate (gpm):
SOL 27 Premium collector 0.75 1.5 2.25 3.0
1. Set the desired max. fl ow rate voa the rotation speed
of the solar pump. The controller will set the speed
accordingly.