AOSmith MVI 103 Notice D'installation Et D'utilisation page 61

MVI pompstation / MVI pump station / station de pompage MVI
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.
4.1.2 Drain back system
C
1. Disconnect the power supply. The pump may not run during filling.
2. All the connections on the roof (collectors as well as drain back) must stay closed.
3. Isolate the expansion vessel (F) by closing the valve.
4. Close the valve (C) on the right side of the pump.
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.
H
G
A
J
I
E
B
C
F
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