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Solar Pool Heating System -- Installation & User Manual
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Page 45
24.2
Configuration 2: Integrated Independent System
Notes:
For pool with only 1 return port, the filter pump must be set on a timer to run outside of solar hours to
exclude the possibility of the two pumps running together. A and B are the recommended temperature sensor
installation zones for the controller
Advantages:
Disadvantages:
* More energy efficient as a small solar pump runs
independent of the large main filter pump
* Can be retrofitted to older pools depending on access
to underground suction line
*
Pumps can’t run simultaneously for pools wi
th only 1
return port.
* Suction tees above or only just below the water line
will require regular maintenance of non-return valves
24.3
Notes on Teeing into the Suction Line for Configuration 2
Filter pump must be set on a timer to run outside of solar hours to exclude the possibility
of the two pumps running together.
If the pool has more than one return port and the filter pump and solar pump run together,
the installer must check the combined flow does not exceed suction inlet flow rate limits.
checked.
Filter pump must be set on a timer to run outside of solar hours to exclude the possibility
of the two pumps running together.
Note: the tee into the suction line must be performed far below the waterline (> 1m).
Why?
When the filter pump starts it will create negative pressure in the suction line which
will drop the water line in the solar suction line - if the water line drops below the tee point
air will be drawn de-priming the main filter pump.
