Setting The Solar System - AOSmith MVI 103 Notice D'installation Et D'utilisation

4.2 Setting the solar
system
4.2.1
MVI pompstation / MVI pump station / station de pompage MVI
Flow setting
After putting the solar system in operation, the flow rate needs to be adjusted to the desired
speed. The flow rate can be adjusted at the flow meter (B), with the pump running. The
pump in this installation always runs at 100%.
1. With the aid of the indicator (1), mark the reference flow rate at which the valve has to
be set. Based on the number of collectors, the flow must be reduced to the
predetermined rate, as stated in the table in appendix 9.3.
2. Use the ring (2) to open the obturator that shuts off the flow of medium in the flow meter
(3) under normal operating conditions.
3. Keeping the obturator open, apply a wrench (12 mm) on the control stem of the valve (4)
to adjust the flow rate. It is indicated by a metal ball (5) that runs inside a transparent
guide (6) marked by a graduated scale in l/min.
4. After completing the balancing, release the ring of the flow meter obturator that, thanks
to an internal spring, will automatically go back into the closed position.
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