I need help understanding infinity/vanishing edge surge tank level controllers and welcome anyone's recommendation (brand/model) on which digital sensors/controller(s) to use.
We're upgrading our new pool design to an infinity edge design with a gutter type trough that gravity drains to a underground surge tank. My PB and I are using an engineering consultant to determine all the required trough, drain pipe, surge tank, and pumping sizes and flow rates.
Question 1: I'm shopping to find a dual sensor control system referred to by Scott Cohen in his 2011 Aqua Magazine article that "allows two set points, both low and high in the tank. A sensor at minimum operating level activates the autofiller (when evaporation lowers pool water); the other sensor at the maximum operating level turns on the edge circulation pump to (when surge tank levels get too high)."
My expectation is to run the edge only 'as needed' several times a day to refresh the tank water and to allow the autofill to adjust for evaporation. Otherwise, the edge would just be a 'wet edge' visually - there's no real vantage point on the waterfall side. As bathers get into the pool I assume the high set point sensor will turn on the edge circulation pump to balance the water in the pool. After bathers leave the pool, the high point sensor would stop the edge circulation.
Question 2: how does this system compensate for rainwater gain? The preliminary schematic from the engineers show a overflow tube at the top of the tank that takes overflow to our run-off area. If the high point sensor reads rainwater gain the same way it senses surge, won't it just turn on the pump during rainstorms and remain on until evaporation reduces water in the system? Perhaps there's a clever capacity calculation between the high set point on/off levels and the overflow inlet height!?!?
New to TFP.... but have gain much insight reading others' posts. Thanks for your help.
We're upgrading our new pool design to an infinity edge design with a gutter type trough that gravity drains to a underground surge tank. My PB and I are using an engineering consultant to determine all the required trough, drain pipe, surge tank, and pumping sizes and flow rates.
Question 1: I'm shopping to find a dual sensor control system referred to by Scott Cohen in his 2011 Aqua Magazine article that "allows two set points, both low and high in the tank. A sensor at minimum operating level activates the autofiller (when evaporation lowers pool water); the other sensor at the maximum operating level turns on the edge circulation pump to (when surge tank levels get too high)."
My expectation is to run the edge only 'as needed' several times a day to refresh the tank water and to allow the autofill to adjust for evaporation. Otherwise, the edge would just be a 'wet edge' visually - there's no real vantage point on the waterfall side. As bathers get into the pool I assume the high set point sensor will turn on the edge circulation pump to balance the water in the pool. After bathers leave the pool, the high point sensor would stop the edge circulation.
Question 2: how does this system compensate for rainwater gain? The preliminary schematic from the engineers show a overflow tube at the top of the tank that takes overflow to our run-off area. If the high point sensor reads rainwater gain the same way it senses surge, won't it just turn on the pump during rainstorms and remain on until evaporation reduces water in the system? Perhaps there's a clever capacity calculation between the high set point on/off levels and the overflow inlet height!?!?
New to TFP.... but have gain much insight reading others' posts. Thanks for your help.
