Ongoing Owner Build Pool: Advice Needed

Well your questions do not reflect what the manual is saying to do. Like this…

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It seems that you are looking for ways to deviate from recommended and accepted practices. Even the so called pros mess it up when they begin freelancing.

Example…



Manufacturers recommend to loop the spa. Are you asking if some folks don’t follow what is in the manual? Why?

Also manuals often gloss over key steps that they assume a professional plumber always knows.

Your postings reference your gut instead of the manuals you are looking to follow.
@ajw22, I'm sorry, but all I'm trying to do is understand what is recommended vs what I'm assuming or have read here or there. I'm asking all of this so I know what the right thing to do is and then I intend to do just that. Whether I do it myself or pay someone else, I would still want as much information as possible, because as an owner builder, I feel like all the responsibility is on me.
 
I suggest you reference the blower installation instructions as the air/water interface is critical for proper jet operation.

Below is from the Jandy Blower Installation Manual…

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So I ran some numbers using the ParaJets, 25' pool to pump, no filter, no heater, nothing but jets and pipe/fittings.

IntelliFlo3 - 6 Jets, 107 GPM, 69' of head
IntelliFloXF - 6 Jets, 114 GPM, 79' of head
WhisperFloXF 5HP - 8 Jets, 145 GPM, 75' of head

If you want more jets that this, I would recommend having two separate plumbing loops for the spa jets and a dedicated pump for each.

Also, for the plumbing, for each loop, 3" to/from the spa, split each half of the jets on 2.5" and feed the jets directly off the 2.5" line. No loop required.
 
This is the way my spa is setup with one pump for filter and heater and another dedicated to the jets…

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