From https://www.swimmingpoolsteve.com/pages/efficient-design.html this video talks about the maximum distance you can place the pump, filter and heater from the swimming pool. Of course, closer to the pool is better since this will minimize efficiency losses for the filtration system, but in a design situation where you are forced to remotely locate the equipment, how far can it be?
10' to 30' from the pool = ideal and most common
30' to 50' from the pool = appreciable efficiency losses
50' to 100' from the pool = pipe size and pump size design changes required
100'+ requires custom design of the system to account for transmission losses
The height of the pump relative to the pool water will be an important consideration here also. At the same level or flooded intake, where the pump sits below the water level of the pool are more efficient designs and will assist with dealing with long pipe run transmission losses. Pumps in general can operate up to 8' or 10' above the water level in the pool, but this puts additional strain on the pump which when combined with long pipe runs may be too much for the pump to overcome the resistance to flow. If you have a long pipe run you do not also want a high lift to the pump if you can avoid it. A long pipe run to a submerged pool house / bunker would be preferable in this regard.
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