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Thread: Need Help for setting up Fleck 2900S and Noise solution.

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  1. #1
    DIY Junior Member car2carl's Avatar
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    Default Need Help for setting up Fleck 2900S and Noise solution.

    I bought a water softener Fleck 2900 2" Commercial Water Softener, 80,000 Grains with 3200NXt timer and 2" Meter and was just installed in my house by my contractor as part of the contract. It come with 13" x 54" tank and 18"x40" brine tank.
    The reason I choose this system was the supply water to my house is 2" pipe so my contractor asked me to purchase the same size system with supply pipe size from the city. ( I don't know this was the correct advice )
    Now I have many problem to operate this system correctly .
    Since the system come with 2" meter and the meter can't count accurately as we just open 1 or 2 faucets the meter won't count down. found out the meter accuracy is +/- 3gpm. I need to fully open 4 faucets for the meter to show the meter working.
    And I will forget to use the meter to set up my system just realize the system I choose was wrong.
    Now I have to setup base on estimate water usage per day for about 450 gallon and 11Gpg hardness from city and insignificant iron.
    I have been reading through this forum and others and many of Gary Slusser's post. and I might know to set my system regeneration day base on the capacity and SFR .
    the problem is I don't know how to setup the regeneration cycle time correctly.
    Back wash time was set 10 minutes
    Brine and slow rinse 1 hour
    Rapid rinse 8 minutes
    Brine refill 3 minutes
    And this system is so noisy during the regeneration about 2 am and when it change the cycle it create hammering to my plumbing system I believe.
    I try to cut the cycle time and safe salt if necessary and but don't have clue the correct cycle time base of my city water condition which is generally good/fair as drinking water.
    thanking you in advance if someone in this forum can help.
    Auggy

  2. #2
    Water systems designer, R&D ditttohead's Avatar
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    There may be a cheap and easy solution. Your plumber was correct for code reasons to ask for the same pipe size. UPC does not allow for a reduction in pipe size due to potential flow velocity issues. The internal manifold is only 1-1/2" on that system, but since the pipe is inside of the tank, the potential for pipe vibration, excessive noise, etc, is not an issue. Water velocity can exceed 8 FPS inside of the system with no problem. All that being said, I need a picture of your system to determine the correct way to modify the system for better meter accuracy. There are dozens of meters companies use on the 2900, some are repairable in the field for better low flow accuracy. As to the drain noise, that system should have a 4 to 5 GPM DLFC button depending on water temperature. Can you confirm or check the water flow to the drain? Also, be sure to run the drain pipe in 3/4" PVC, this will reduce the velocity, and usually the sound. Lets see a picture of the unit, with details on the meter so we can help you out.

  3. #3
    DIY Junior Member car2carl's Avatar
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    Dittohead
    I really appreciate for your reply
    I have meter from fleck 2" plastic meter paddle with electronic sensor
    I had 3/4" PVC drain line and was taken out yesterday as I saw your post that suggest to reduce some L (90 degree) and plan to change to 1" using long elbow from Conduit PVC Pipe in order avoid sharp turn.
    and the hammering from cycle change I have installed water hammer arrestor 1" about and the location is about 6ft before the system it seems doesn't work and I tried to change with expansion tank what do you think ?
    and just found out that that there is marker writing from my supplier at DFLC fitting 5.0 and 2.0 from BFLC .
    attached is the picture of my system
    Name:  2900Fleck.jpg
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    thank you again

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    Water systems designer, R&D ditttohead's Avatar
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    Unfortunately, that meter does not accept any modifications that I am aware of for making it accurate at lower flow rates. The brass version of that meter has an internal sleeve available that makes its low flow accuracy much better. The company that sold it should have considered a slightly different design to accomodate code and your actual needs. You could use the Clack 2" Stainless meter, but that only gets you down to 1.5 GPM for accuracy. Your only other option now is to use a smaller meter. If it were me, I would use the Fleck 1-1/2" inline turbine meter (used on the 2850SXT and 9500SXT). It uses the same turbine as the 7000, and while its specs may not look very good on paper, in the field it is highly accurate at low flows. Technically you may not be to code, but in all reality, it will work fine. It can flow 40 GPM easily. 61560 plus the correct adapters, available with threaded of sweat connectors. You will also need the correct meter cable. Name:  meter.jpg
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    As to the water hammer, I am at a loss assuming your plumbing is correct, the flow rate of 5 GPM to the drain should not cause a significant hammer, but... what is your water pressure?

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    DIY Junior Member car2carl's Avatar
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    Dittohead

    The water hammer is not caused by the drain but by the supply line 2" when it is changing cycle, I believe for bypass during regeneration. So 2 different issue and the noise during backwash and rapid rinse (both is the loudest), I have change drain line to 1" and is still not help.
    I think the noise come from the Valve,
    About the meter I gave up so I need help to set up the regeneration cycle time and I assumed my system is overkill for residential, can you give your opinion?
    my supply line pressure is 75psi as I have PRV installed.
    Thank you

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    Water systems designer, R&D ditttohead's Avatar
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    According to your numbers, every 8 days should be fine. You can set the "Regeneration day override" to 8 in the nxt, leave the meter settings etc functioning, just change the override to 8 and you should be fine. Double check your pressure, especially at night in Los Angeles, pressures exceeding 200 PSI is common. PRV or not, check the pressure in the middle of the night to be sure.

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