Question about booster pump plumbing

jgrover · Postby **jgrover** » Wed 16 Jun, 2010 14:56

Most documentation I've read says to plumb the booster pump on the pool return side AFTER the pool/spa diverter valve and AFTER the heater. That is, in fact, how mine is plumbed, which means that when I run in "Spa Spillover" mode (AquaLogic controller) where I am drawing from pool drains but all return flow is going to the spa (waterfall...and right now useful as I have a pressure-side leak in my pool return lines), I cannot run the cleaner / booster pump without valving back to pool side return.

I'm wondering why?

Why not plumb the intake for the booster pump in before the heater, before the diverter to pool or spa return? It seems like plumbing in there would ensure that the booster would never be starved so long as the main pool pump was running, no matter how the pool/spa valves were set. It would also allow me to operate in spa spillover mode yet run the cleaner (at least until I can locate and fix the leak in the pool return line).

Any reason this would be a problem?

Thanks!

Postby **Pool Clown** » Thu 17 Jun, 2010 20:03

When the filter pump is running, water is running thru the cleaner pump, even when the cleaner pump is off. If you plumbed it like you want, every time you switched it to spa mode, your spa would begin to slowly empty out.

jgrover · Postby **jgrover** » Fri 18 Jun, 2010 11:26

Ah! That makes sense. I hadn't thought of that. Thanks!

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