Recently I had a contractor install an ecostar 3400vsp. It replaced a whisperflo 2hp pump. I am convinced the pump is undersized or underpowered or perhaps it was not a good idea to swap in a vsp for the 2hp pump.
Here is the setup.
House is on a hill so backyard is sloped
Pebbletech pool that is a rectangle, 15.5 by 35 feet, the last 6 feet is a 6 inch Baja reef. It is only 3 feet deep at the shallow and goes to 5 feet deep. My best guess estimate is about 13500 gallons in the pool. Spa is 7x7, 3 deep and a sitting platform all around. My guess is it is 1000 gallons.
Attached is a pic before I had the pool resurfaced, pool currently full and operational. Way in the upper right side of the pic, you can see a short wall, it houses the pool pump equipment. It sits approx. 12 feet above the water line of the pool.
After the install, contractor asked me to play with it and see if I could optimize flow and reduce pump rate etc.
I am convinced the water flow is way low, so I called him out. He decided to place pressure gauges to determine head pressure etc.
We wrote all these values down...
at prime, pressure reading at pump was 22 and in the filter tank 16
at 2700 rpms pump pressure 18 filter 10
at 2000 rpms pump pressure 12 filter 5
we called Hayward to try to guess flow rates....they told us it is impossible and you have to just play with the pump and see how it goes.
How can I estimate the flow in this setup ? Any help is appreciated.