27
Revision Date: 02/07/2020
Revision: C
Pre-Assembled Rhino - Installation Manual
PVC Pipe Selection (Supply / Return)
Selecting the correct sized PVC pressure pipe for your solar array is essential to ensuring the solar system runs
efficiently. Selecting a pipe that is too small will result in the water flow being restricted to the solar panels and
unnecessarily increase pump power consumption. A good rule of thumb is
4 litres per minute per square
metre of Solar Panel
. To select the correct sized pipe, use the following table as a guide:
Flow Rate - Recommended Pipe Diameter (AS 1477 Class 9)
Litres Per Minute
Pipe Diameter (mm)
Less than 170
40
170 to 300
50
300 to 600
65
Flow rates should be between 1.8 to 4.8 litres per minute per square metre of installed panels however Boss
recommends
4 litres per minute per square metre
of installed panels to provide the best pool heating
efficiency
.
Once the required Flow Rate has been calculated, select an appropriate pump size (based on pump
manufacturers FLOW RATE @ HEAD HEIGHT specifications) This will ensure that the pump will correctly
specified with enough Kw/HP power to adequately supply the solar system with adequate water to provide the
recommended flow rate (4 l/min/m2) necessary for the total system being installed.
The generally accepted rates for a typical 30m2 solar installation are shown in the table below:
House Type
Separate Circuit
Simultaneous
Single Story
¾ hp with TufFilta®
½ hp - TufFilta® optional
Double Story
1 hp with TufFilta®
½ or ¾ hp -TufFilta® optional