AOSmith MVI 103 Notice D'installation Et D'utilisation page 60

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MVI pompstation / MVI pump station / station de pompage MVI
5. Open the drain valve (I) and connect this opening to an open and clean container,
suited for high temperatures and glycol mixture.
6. Connect the filling pump to the filling point present on the security group (E).
7. Open the valve on the security group (E) and add glycol from the container through this
point. Add glycol to the container when the fluid level becomes too low to continue the
filling procedure.
Note:
Prevent air from entering the system through the filling point.
8. Keep adding glycol through this opening until there are no more air bulbs visible coming
out of the drain valve (I) for over 5 minutes.
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 collectors is okay. Do this by opening the
air elimination valve on the highest point of the collector field. 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 is running out of the air elimination valve of the collector, the system is
completely filled and the air elimination valve 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, add some more fluid through the filling point (E) to reach the predetermined
pressure which is measured at the pressure gauge (J). For non drain back systems, this
pressure depends on the static height of the system. See appendix 9.4.