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Thread: New filter installation help

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    Join Date
    Jun 2014
    Location
    Texas City, Texas
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    2

    New filter installation help

    New to the forum and in need of advice. I'm replacing a Pentair FNSP-48 DE filter with a Pentair TR100HD sand filer. The inlet and out on the filters are reversed. The multi port valve has the same mounting specs and fits perfect. I am reusing the valve. Would it be better to run in the backwash position and backwash in the run position? Or make the valve outlet the new inlet and vise versa since I have to cut and reposition due to the size difference?

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    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Murrieta, CA
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    2,360

    Re: New filter installation help

    Why are you swapping to sand? Sorry I can't help and not trying to waste your time, but DE filters are considered a premium filter material. Grids can be replaced with a significant savings over replacing the whole filter.
    Murrieta, CA. 15K (Est) pool/spa. Hayward Tristar SP3220EE 2.70HP pump, Hayward Swimclear Cartridge filter C4025 425sqft (PA106), Pentair Mastertemp 400 heater. TF-100/Speedstir

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    Join Date
    Jun 2014
    Location
    Texas City, Texas
    Posts
    2

    Re: New filter installation help

    The bottom half has a crack that I have been nursing along for a year and is getting worse. The grids needs replacing, got tired of messing with the DE and I wanted to try something new.

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    Mod Squad jblizzle's Avatar
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    May 2010
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    Tucson, AZ
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    38,521

    Re: New filter installation help

    I did not think you could swap the valves between the DE and sand filters ... even if you did come up with a conversion of the settings.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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