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Thread: Question on Pentair Intellifo 011018 Piping Specification

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    Question on Pentair Intellifo 011018 Piping Specification

    Question on Pentair Intellifo 011018 Piping Specification

    Question: In the Pentair Intellifo 011018 owner’s manual, under the “Piping installation” section, it says “Do not install 90° elbows directly into pump inlet or outlet.” This instruction is a bit ambiguous / not clear enough. I have 12 full inches of straight run into the inlet (suction) side of the pump, which is the critical side for priming purposes. However, on the outlet side (vertical), I intend to use a 2” threaded male adaptor with a slip fit for interfacing my glue-style PVC into. My existing plumbing configuration requires the use of a 90 degree fitting directly onto the threaded male adaptor, so

    [img]Does anyone know how critical it to follow the instruction in the Pentair manual? They don’t specify how long the straight run of pipe needs to be before the use of elbows, valves, etc.

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Question on Pentair Intellifo 011018 Piping Specificatio

    Welcome to TFP!!!

    I think it is much more critical on the suction side than it is on the pressure side. That said, I do not know how big of a deal it would be to put the 90 right above the pump ... I would guess it would not matter.

    Althoug personally, I would want enough straight pipe above the pump to fit a union in. So any water leak is easier to fix and the pump is easier to remove for service.
    Jason, TFP Moderator
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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Question on Pentair Intellifo 011018 Piping Specificatio

    Neither is critical, though both will affect the ease of priming the pump. Generally, all you will need to do is lower the maximum pump speed used when priming and you will be alright, though occasionally, when the pump is well above the pool water line, it can affect the ability to prime.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    In the Industry

    Join Date
    Jul 2010
    Ashford, CT

    Re: Question on Pentair Intellifo 011018 Piping Specificatio

    I have two plumbed with 90's above the outlet and all work fine.

    Also see you have a Sta-Rite filter and those have good flow when clean.
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    Re: Question on Pentair Intellifo 011018 Piping Specificatio

    Thanks for all responses folks! It sounds like I should be fine with the 90 degree elbow on the outlet side of the pump.
    Also bought a Suntouch controller.... we'll see how this all goes!

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