Roof Solar Pool Heating With Variable Speed Pump

The beauty of a variable seed pump with solar pool heating is that we can control the pump speed and consequently the flow rate using automated controls and balance your energy savings and pool heating performance.

Roof solar pool heating with variable speed pump.

The only difference is that solar pool heaters will only work at full capacity when it s hot out otherwise its efficiency will significantly diminish when it s overcast. Solar pool heaters work great with variable speed pumps because an optimal flow rate for the best performance can be selected. The smartpool s601p sunheater solar panel uses a direct flow system of water through your pre installed water pump to make the water flow through the solar collectors to heat the water up to 6 10 f more than its regular temperature value. There are 10 solar thermal panels on roof of pool enclosure with a circulator and closed glycol loop to a heat exchanger for pool and a 110 gal solar electric domestic tank.

I use a pentair intelliflo which idles along at about 150w for 10hrs day. Indoor 16 x 32 17 5k gal pool with 1 hp single speed pump sand filter and auto brominator. When the roof temperature is adequate and solar heating is required this pump speeds up to about 800w and a valve opens to divert the water through the solar system. Have you considered a variable speed drive pump.

If the variable speed pump is running at 1400rpm the water flow rate will be around170 litres per minute if your fx250 solar booster pump is then triggered by the solar controller when the roof is hot it will need 250 litres per minute flow rate hence why it is called an fx250 meaning that the water available falls 80 litres short of what the solar pump needs which then means that it will cavitate with lots of air in the plumbing not good for the long term health of the. The combination of solar pool heating and variable speed pumps works best with an automation system that can tell the pump when to change speed for solar heating. A single speed pump is typically fine to use with solar pool heating but if you want maximum pool heating a variable speed pump can both save you a tremendous amount of money and provide the proper flow rate. We can set your pump for a long run time at a slow speed and ramp up the speed when solar pool heating is needed.

Smartpool offers a remarkable option to the market. Here s the setup i ve had for 20 years.