AOSmith MVI 103 Notice D'installation Et D'utilisation page 62

62
MVI pompstation / MVI pump station / station de pompage MVI
9. The system is now filled with glycol. Stop adding glycol and shut down the filling pump.
Open the valve (C) on the right side of the high capacity solar pump and close the drain
valve (I).
10. Check on the roof if the fluid level inside the drain back is okay. Do this by removing the
plug from the upper connection on the backside of the drain back. The system is filled
correct when the fluid is just running out, over the edge of this connection.
11. If there is no fluid coming out of this connection, fill the remaining portion of the system
with the filling pump through the filling point (E) as described in steps 7 to 9.
12. When the fluid level reaches the upper connection of the drain back, the system is
completely filled and the drain back can be closed.
13. Bleed the solar pump as described in the manual of the pump.
14. Open the valve at the pre-charged expansion vessel (F). For instructions about pre-
charging the expansion vessel, see 4.2.4.
15. Finally, check if the system reaches the predetermined pressure which is measured at
the pressure gauge (J). The required pressure is given in the table in appendix 9.3.
Note:
If this pressure is not reached, contact your supplier or A.O. Smith for
further assistance.
16. Close the filling point (E).
17. Provide power to the high capacity solar pump by powering up the Resol control or the
SHM control.
18. Let the system run for several minutes (overrule this with the control) and check if air
bulbs can be heard in the piping. If so, redo steps 10 to 17. If not, the filling of the
system is finished.
19. Disconnect the filling pump and check the fittings and seals on leaks. The system is now
ready to use.