6
SOLAR ARRAY
The solar array is the power source for your pump and should be installed as close to the pump as
possible. Always ensure the panels are free from dirt and debris and free from shading throughout
the day, even partial shading or dirt can reduce or stop your water output.
Please see the Waterboy Array Frame Manual for assembly instructions.
Seasonal Adjustment
- At latitudes outside of the Tropics, there can be a marked difference in
pump output on a seasonal basis partially due to the changes in the sun’s elevation in the sky in
relation to the solar array. For systems in the southern hemisphere, the solar array should be installed
facing north and in the northern hemisphere they should face south. If the solar array is to be installed
in a fixed position and never adjusted (such as on a shed roof) it is most effective throughout the year
to have it facing towards the equator and placed at an angle from the horizontal, equal to the latitude
of the installation.
Having a seasonal adjustment allows the user to change the angle of the array and can produce a
greater output from the pumping system. By having the array at a steeper angle during the winter
(when the sun is lower on the horizon) more of the sun’s rays will strike the surface of the array and
provide more power to the pump. In the summer months the angle of the array can be reduced to
take advantage of the sun’s higher position in the sky. This adjustment improves total output
whether the solar array is a fixed or a single axis tracking type.
Wiring the Array
When connecting the panels together you need to be aware of the configuration required.
*** ATTENTION! - Always be aware that solar panels are a live power source and can kill ***
Series – in this configuration the leads are connected together positive to negative in a chain (similar
to batteries in a torch), this produces a voltage equal to the sum total of all the panels but the current
remains the same as an individual panel.
Parallel – in this configuration the leads are connected positive to positive and negative to negative,
this produces a current equal to the sum total of all the panels but the voltage remains the same as
an individual panel.
This is vital to know, as the flow of water from the pump is directly related to the voltage supplied,
the higher the voltage supplied the faster the pump turns and the more water flows. Also, the more
current available to the pump the higher and further the pump can deliver water.
See configuration diagrams
(pages 12 & 13)
WARNING! - be careful not to exceed the voltage limit of the controller or the power limits of the
motor.
(pg. 11)
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